update build tag

Co-authored-by: emrysechobygo <emrysechobygo@hotmail.com>

.gitignore

@@ -5,6 +5,9 @@ cryptor/*.txt
 fileutil/*.txt
 fileutil/*.zip
 fileutil/*.link
+fileutil/tempdir
 fileutil/unzip/*
 slice/testdata/*
-cryptor/*.pem
+cryptor/*.pem
+docs/node_modules
+docs/.vitepress

README.md

@@ -4,7 +4,7 @@
 <br/>
 
 ![Go version](https://img.shields.io/badge/go-v1.16-9cf)
-[![Release](https://img.shields.io/badge/release-1.3.6-green.svg)](https://github.com/duke-git/lancet/releases)
+[![Release](https://img.shields.io/badge/release-1.4.6-green.svg)](https://github.com/duke-git/lancet/releases)
 [![GoDoc](https://godoc.org/github.com//duke-git/lancet?status.svg)](https://pkg.go.dev/github.com/duke-git/lancet)
 [![Go Report Card](https://goreportcard.com/badge/github.com/duke-git/lancet)](https://goreportcard.com/report/github.com/duke-git/lancet)
 [![test](https://github.com/duke-git/lancet/actions/workflows/codecov.yml/badge.svg?branch=main&event=push)](https://github.com/duke-git/lancet/actions/workflows/codecov.yml)
@@ -24,7 +24,7 @@ English | [简体中文](./README_zh-CN.md)
 ## Feature
 
 -   👏 Comprehensive, efficient and reusable.
--   💪 200+ go util functions, support string, slice, datetime, net, crypt...
+-   💪 400+ go util functions, support string, slice, datetime, net, crypt...
 -   💅 Only depend on the go standard library.
 -   🌍 Unit test for every exported function.
 
@@ -63,7 +63,22 @@ func main() {
 
 ## API Documentation
 
-### 1. Convertor package contains some functions for data convertion.
+### 1. Compare package provides a lightweight comparison function on any type.
+
+```go
+import "github.com/duke-git/lancet/compare"
+```
+
+#### Function list:
+
+-   [Equal](https://github.com/duke-git/lancet/blob/v1/docs/compare.md#Equal)
+-   [EqualValue](https://github.com/duke-git/lancet/blob/v1/docs/compare.md#EqualValue)
+-   [LessThan](https://github.com/duke-git/lancet/blob/v1/docs/compare.md#LessThan)
+-   [GreaterThan](https://github.com/duke-git/lancet/blob/v1/docs/compare.md#GreaterThan)
+-   [LessOrEqual](https://github.com/duke-git/lancet/blob/v1/docs/compare.md#LessOrEqual)
+-   [GreaterOrEqual](https://github.com/duke-git/lancet/blob/v1/docs/compare.md#GreaterOrEqual)
+
+### 2. Convertor package contains some functions for data convertion.
 
 ```go
 import "github.com/duke-git/lancet/convertor"
@@ -81,11 +96,21 @@ import "github.com/duke-git/lancet/convertor"
 -   [ToJson](https://github.com/duke-git/lancet/blob/v1/docs/convertor.md#ToJson)
 -   [ToString](https://github.com/duke-git/lancet/blob/v1/docs/convertor.md#ToString)
 -   [StructToMap](https://github.com/duke-git/lancet/blob/v1/docs/convertor.md#StructToMap)
+-   [MapToStruct](https://github.com/duke-git/lancet/blob/v1/docs/convertor.md#MapToStruct)
 -   [EncodeByte](https://github.com/duke-git/lancet/blob/v1/docs/convertor.md#EncodeByte)
 -   [DecodeByte](https://github.com/duke-git/lancet/blob/v1/docs/convertor.md#DecodeByte)
 -   [DeepClone](https://github.com/duke-git/lancet/blob/v1/docs/convertor.md#DeepClone)
+-   [CopyProperties](https://github.com/duke-git/lancet/blob/v1/docs/convertor.md#CopyProperties)
+-   [ToInterface](https://github.com/duke-git/lancet/blob/v1/docs/convertor.md#ToInterface)
+-   [Utf8ToGbk](https://github.com/duke-git/lancet/blob/v1/docs/convertor.md#Utf8ToGbk)
+-   [GbkToUtf8](https://github.com/duke-git/lancet/blob/v1/docs/convertor.md#GbkToUtf8)
+-   [ToStdBase64](https://github.com/duke-git/lancet/blob/v1/docs/convertor.md#ToStdBase64)
+-   [ToUrlBase64](https://github.com/duke-git/lancet/blob/v1/docs/convertor.md#ToUrlBase64)
+-   [ToRawStdBase64](https://github.com/duke-git/lancet/blob/v1/docs/convertor.md#ToRawStdBase64)
+-   [ToRawUrlBase64](https://github.com/duke-git/lancet/blob/v1/docs/convertor.md#ToRawUrlBase64)
+-   [ToBigInt](https://github.com/duke-git/lancet/blob/v1/docs/convertor.md#ToBigInt)
 
-### 2. Cryptor package is for data encryption and decryption.
+### 3. Cryptor package is for data encryption and decryption.
 
 ```go
 import "github.com/duke-git/lancet/cryptor"
@@ -114,19 +139,31 @@ import "github.com/duke-git/lancet/cryptor"
 -   [DesOfbEncrypt](https://github.com/duke-git/lancet/blob/v1/docs/cryptor.md#DesOfbEncrypt)
 -   [DesOfbDecrypt](https://github.com/duke-git/lancet/blob/v1/docs/cryptor.md#DesOfbDecrypt)
 -   [HmacMd5](https://github.com/duke-git/lancet/blob/v1/docs/cryptor.md#HmacMd5)
+-   [HmacMd5WithBase64](https://github.com/duke-git/lancet/blob/v1/docs/cryptor.md#HmacMd5WithBase64)
 -   [HmacSha1](https://github.com/duke-git/lancet/blob/v1/docs/cryptor.md#HmacSha1)
+-   [HmacSha1WithBase64](https://github.com/duke-git/lancet/blob/v1/docs/cryptor.md#HmacSha1WithBase64)
 -   [HmacSha256](https://github.com/duke-git/lancet/blob/v1/docs/cryptor.md#HmacSha256)
+-   [HmacSha256WithBase64](https://github.com/duke-git/lancet/blob/v1/docs/cryptor.md#HmacSha256WithBase64)
 -   [HmacSha512](https://github.com/duke-git/lancet/blob/v1/docs/cryptor.md#HmacSha512)
+-   [HmacSha512WithBase64](https://github.com/duke-git/lancet/blob/v1/docs/cryptor.md#HmacSha512WithBase64)
 -   [Md5String](https://github.com/duke-git/lancet/blob/v1/docs/cryptor.md#Md5String)
+-   [Md5StringWithBase64](https://github.com/duke-git/lancet/blob/v1/docs/cryptor.md#Md5StringWithBase64)
+-   [Md5Byte](https://github.com/duke-git/lancet/blob/v1/docs/cryptor.md#Md5Byte)
+-   [Md5ByteWithBase64](https://github.com/duke-git/lancet/blob/v1/docs/cryptor.md#Md5ByteWithBase64)
 -   [Md5File](https://github.com/duke-git/lancet/blob/v1/docs/cryptor.md#Md5File)
 -   [Sha1](https://github.com/duke-git/lancet/blob/v1/docs/cryptor.md#Sha1)
+-   [Sha1WithBase64](https://github.com/duke-git/lancet/blob/v1/docs/cryptor.md#Sha1WithBase64)
 -   [Sha256](https://github.com/duke-git/lancet/blob/v1/docs/cryptor.md#Sha256)
+-   [Sha256WithBase64](https://github.com/duke-git/lancet/blob/v1/docs/cryptor.md#Sha256WithBase64)
 -   [Sha512](https://github.com/duke-git/lancet/blob/v1/docs/cryptor.md#Sha512)
+-   [Sha512WithBase64](https://github.com/duke-git/lancet/blob/v1/docs/cryptor.md#Sha512WithBase64)
 -   [GenerateRsaKey](https://github.com/duke-git/lancet/blob/v1/docs/cryptor.md#GenerateRsaKey)
 -   [RsaEncrypt](https://github.com/duke-git/lancet/blob/v1/docs/cryptor.md#RsaEncrypt)
 -   [RsaDecrypt](https://github.com/duke-git/lancet/blob/v1/docs/cryptor.md#RsaDecrypt)
-
-### 3. Datetime package supports date and time format and compare.
+-   [GenerateRsaKeyPair](https://github.com/duke-git/lancet/blob/v1/docs/cryptor.md#GenerateRsaKeyPair)
+-   [RsaEncryptOAEP](https://github.com/duke-git/lancet/blob/v1/docs/cryptor.md#RsaEncryptOAEP)
+-   [RsaDecryptOAEP](https://github.com/duke-git/lancet/blob/v1/docs/cryptor.md#RsaDecryptOAEP)
+### 4. Datetime package supports date and time format and compare.
 
 ```go
 import "github.com/duke-git/lancet/datetime"
@@ -137,6 +174,7 @@ import "github.com/duke-git/lancet/datetime"
 -   [AddDay](https://github.com/duke-git/lancet/blob/v1/docs/datetime.md#AddDay)
 -   [AddHour](https://github.com/duke-git/lancet/blob/v1/docs/datetime.md#AddHour)
 -   [AddMinute](https://github.com/duke-git/lancet/blob/v1/docs/datetime.md#AddMinute)
+-   [AddYear](https://github.com/duke-git/lancet/blob/v1/docs/datetime.md#AddYear)
 -   [BeginOfMinute](https://github.com/duke-git/lancet/blob/v1/docs/datetime.md#BeginOfMinute)
 -   [BeginOfHour](https://github.com/duke-git/lancet/blob/v1/docs/datetime.md#BeginOfHour)
 -   [BeginOfDay](https://github.com/duke-git/lancet/blob/v1/docs/datetime.md#BeginOfDay)
@@ -164,8 +202,20 @@ import "github.com/duke-git/lancet/datetime"
 -   [ToFormat](https://github.com/duke-git/lancet/blob/v1/docs/datetime.md#ToFormat)
 -   [ToFormatForTpl](https://github.com/duke-git/lancet/blob/v1/docs/datetime.md#ToFormatForTpl)
 -   [ToIso8601](https://github.com/duke-git/lancet/blob/v1/docs/datetime.md#ToIso8601)
+-   [IsLeapYear](https://github.com/duke-git/lancet/blob/v1/docs/datetime.md#IsLeapYear)
+-   [BetweenSeconds](https://github.com/duke-git/lancet/blob/v1/docs/datetime.md#BetweenSeconds)
+-   [DayOfYear](https://github.com/duke-git/lancet/blob/v1/docs/datetime.md#DayOfYear)
+-   [IsWeekend](https://github.com/duke-git/lancet/blob/v1/docs/datetime.md#IsWeekend)
+-   [NowDateOrTime](https://github.com/duke-git/lancet/blob/v1/docs/datetime.md#NowDateOrTime)
+-   [Timestamp](https://github.com/duke-git/lancet/blob/v1/docs/datetime.md#Timestamp)
+-   [TimestampMilli](https://github.com/duke-git/lancet/blob/v1/docs/datetime.md#TimestampMilli)
+-   [TimestampMicro](https://github.com/duke-git/lancet/blob/v1/docs/datetime.md#TimestampMicro)
+-   [TimestampNano](https://github.com/duke-git/lancet/blob/v1/docs/datetime.md#TimestampNano)
+-   [TrackFuncTime](https://github.com/duke-git/lancet/blob/v1/docs/datetime.md#TrackFuncTime)
+-   [DaysBetween](https://github.com/duke-git/lancet/blob/v1/docs/datetime.md#DaysBetween)
+-   [GenerateDatetimesBetween](https://github.com/duke-git/lancet/blob/v1/docs/datetime.md#GenerateDatetimesBetween)
 
-### 4. Fileutil package implements some basic functions for file operations.
+### 5. Fileutil package implements some basic functions for file operations.
 
 ```go
 import "github.com/duke-git/lancet/fileutil"
@@ -187,9 +237,21 @@ import "github.com/duke-git/lancet/fileutil"
 -   [ReadFileToString](https://github.com/duke-git/lancet/blob/v1/docs/fileutil.md#ReadFileToString)
 -   [ReadFileByLine](https://github.com/duke-git/lancet/blob/v1/docs/fileutil.md#ReadFileByLine)
 -   [Zip](https://github.com/duke-git/lancet/blob/v1/docs/fileutil.md#Zip)
+-   [ZipAppendEntry](https://github.com/duke-git/lancet/blob/v1/docs/fileutil.md#ZipAppendEntry)
 -   [UnZip](https://github.com/duke-git/lancet/blob/v1/docs/fileutil.md#UnZip)
+-   [CurrentPath](https://github.com/duke-git/lancet/blob/v1/docs/fileutil.md#CurrentPath)
+-   [IsZipFile](https://github.com/duke-git/lancet/blob/v1/docs/fileutil.md#IsZipFile)
+-   [FileSize](https://github.com/duke-git/lancet/blob/v1/docs/fileutil.md#FileSize)
+-   [MTime](https://github.com/duke-git/lancet/blob/v1/docs/fileutil.md#MTime)
+-   [Sha](https://github.com/duke-git/lancet/blob/v1/docs/fileutil.md#Sha)
+-   [ReadCsvFile](https://github.com/duke-git/lancet/blob/v1/docs/fileutil.md#ReadCsvFile)
+-   [WriteCsvFile](https://github.com/duke-git/lancet/blob/v1/docs/fileutil.md#WriteCsvFile)
+-   [WriteMapsToCsv](https://github.com/duke-git/lancet/blob/v1/docs/fileutil.md#WriteMapsToCsv)
+-   [WriteStringToFile](https://github.com/duke-git/lancet/blob/v1/docs/fileutil.md#WriteStringToFile)
+-   [WriteBytesToFile](https://github.com/duke-git/lancet/blob/v1/docs/fileutil.md#WriteBytesToFile)
+-   [ReadFile](https://github.com/duke-git/lancet/blob/v1/docs/fileutil.md#ReadFile)
 
-### 5. Formatter contains some functions for data formatting.
+### 6. Formatter contains some functions for data formatting.
 
 ```go
 import "github.com/duke-git/lancet/formatter"
@@ -198,8 +260,14 @@ import "github.com/duke-git/lancet/formatter"
 #### Function list:
 
 -   [Comma](https://github.com/duke-git/lancet/blob/v1/docs/formatter.md#Comma)
+-   [Pretty](https://github.com/duke-git/lancet/blob/v1/docs/formatter.md#Pretty)
+-   [PrettyToWriter](https://github.com/duke-git/lancet/blob/v1/docs/formatter.md#PrettyToWriter)
+-   [DecimalBytes](https://github.com/duke-git/lancet/blob/v1/docs/formatter.md#DecimalBytes)
+-   [BinaryBytes](https://github.com/duke-git/lancet/blob/v1/docs/formatter.md#BinaryBytes)
+-   [ParseDecimalBytes](https://github.com/duke-git/lancet/blob/v1/docs/formatter.md#ParseDecimalBytes)
+-   [ParseBinaryBytes](https://github.com/duke-git/lancet/blob/v1/docs/formatter.md#ParseBinaryBytes)
 
-### Function package can control the flow of function execution and support part of functional programming
+### 7. Function package can control the flow of function execution and support part of functional programming
 
 ```go
 import "github.com/duke-git/lancet/function"
@@ -212,10 +280,14 @@ import "github.com/duke-git/lancet/function"
 -   [Curry](https://github.com/duke-git/lancet/blob/v1/docs/function.md#Curry)
 -   [Compose](https://github.com/duke-git/lancet/blob/v1/docs/function.md#Compose)
 -   [Debounced](https://github.com/duke-git/lancet/blob/v1/docs/function.md#Debounced)
+-   [Debounce](https://github.com/duke-git/lancet/blob/v1/docs/function.md#Debounce)
+-   [Throttle](https://github.com/duke-git/lancet/blob/v1/docs/function.md#Throttle)
 -   [Delay](https://github.com/duke-git/lancet/blob/v1/docs/function.md#Delay)
+-   [Pipeline](https://github.com/duke-git/lancet/blob/v1/docs/function.md#Pipeline)
+-   [Schedule](https://github.com/duke-git/lancet/blob/v1/docs/function.md#Schedule)
 -   [Watcher](https://github.com/duke-git/lancet/blob/v1/docs/function.md#Watcher)
 
-### 6. Mathutil package implements some functions for math calculation.
+### 8. Mathutil package implements some functions for math calculation.
 
 ```go
 import "github.com/duke-git/lancet/mathutil"
@@ -230,8 +302,21 @@ import "github.com/duke-git/lancet/mathutil"
 -   [RoundToFloat](https://github.com/duke-git/lancet/blob/v1/docs/mathutil.md#RoundToFloat)
 -   [RoundToString](https://github.com/duke-git/lancet/blob/v1/docs/mathutil.md#RoundToString)
 -   [TruncRound](https://github.com/duke-git/lancet/blob/v1/docs/mathutil.md#TruncRound)
+-   [CeilToFloat](https://github.com/duke-git/lancet/blob/v1/docs/mathutil.md#CeilToFloat)
+-   [CeilToString](https://github.com/duke-git/lancet/blob/v1/docs/mathutil.md#CeilToString)
+-   [FloorToFloat](https://github.com/duke-git/lancet/blob/v1/docs/mathutil.md#FloorToFloat)
+-   [FloorToString](https://github.com/duke-git/lancet/blob/v1/docs/mathutil.md#FloorToString)
+-   [AngleToRadian](https://github.com/duke-git/lancet/blob/v1/docs/mathutil.md#AngleToRadian)
+-   [RadianToAngle](https://github.com/duke-git/lancet/blob/v1/docs/mathutil.md#RadianToAngle)
+-   [PointDistance](https://github.com/duke-git/lancet/blob/v1/docs/mathutil.md#PointDistance)
+-   [IsPrime](https://github.com/duke-git/lancet/blob/v1/docs/mathutil.md#IsPrime)
+-   [GCD](https://github.com/duke-git/lancet/blob/v1/docs/mathutil.md#GCD)
+-   [LCM](https://github.com/duke-git/lancet/blob/v1/docs/mathutil.md#LCM)
+-   [Cos](https://github.com/duke-git/lancet/blob/v1/docs/mathutil.md#Cos)
+-   [Sin](https://github.com/duke-git/lancet/blob/v1/docs/mathutil.md#Sin)
+-   [Log](https://github.com/duke-git/lancet/blob/v1/docs/mathutil.md#Log)
 
-### 7. Netutil package contains functions to get net information and send http request.
+### 9. Netutil package contains functions to get net information and send http request.
 
 ```go
 import "github.com/duke-git/lancet/netutil"
@@ -254,8 +339,12 @@ import "github.com/duke-git/lancet/netutil"
 -   [HttpPut](https://github.com/duke-git/lancet/blob/v1/docs/netutil.md#HttpPut)
 -   [HttpPatch](https://github.com/duke-git/lancet/blob/v1/docs/netutil.md#HttpPatch)
 -   [ParseHttpResponse](https://github.com/duke-git/lancet/blob/v1/docs/netutil.md#ParseHttpResponse)
+-   [UploadFile](https://github.com/duke-git/lancet/blob/v1/docs/netutil.md#UploadFile)
+-   [DownloadFile](https://github.com/duke-git/lancet/blob/v1/docs/netutil.md#DownloadFile)
+-   [IsPingConnected](https://github.com/duke-git/lancet/blob/v1/docs/netutil.md#IsPingConnected)
+-   [IsTelnetConnected](https://github.com/duke-git/lancet/blob/v1/docs/netutil.md#IsTelnetConnected)
 
-### 8. Random package implements some basic functions to generate random int and string.
+### 10. Random package implements some basic functions to generate random int and string.
 
 ```go
 import "github.com/duke-git/lancet/random"
@@ -263,16 +352,23 @@ import "github.com/duke-git/lancet/random"
 
 #### Function list:
 
+-   [RandBool](https://github.com/duke-git/lancet/blob/v1/docs/random.md#RandBool)
+-   [RandBoolSlice](https://github.com/duke-git/lancet/blob/v1/docs/random.md#RandBoolSlice)
 -   [RandBytes](https://github.com/duke-git/lancet/blob/v1/docs/random.md#RandBytes)
 -   [RandInt](https://github.com/duke-git/lancet/blob/v1/docs/random.md#RandInt)
+-   [RandIntSlice](https://github.com/duke-git/lancet/blob/v1/docs/random.md#RandIntSlice)
 -   [RandString](https://github.com/duke-git/lancet/blob/v1/docs/random.md#RandString)
+-   [RandStringSlice](https://github.com/duke-git/lancet/blob/v1/docs/random.md#RandStringSlice)
+-   [RandFloat](https://github.com/duke-git/lancet/blob/v1/docs/random.md#RandFloat)
+-   [RandFloats](https://github.com/duke-git/lancet/blob/v1/docs/random.md#RandFloats)
 -   [RandUpper](https://github.com/duke-git/lancet/blob/v1/docs/random.md#RandUpper)
 -   [RandLower](https://github.com/duke-git/lancet/blob/v1/docs/random.md#RandLower)
 -   [RandNumeral](https://github.com/duke-git/lancet/blob/v1/docs/random.md#RandNumeral)
 -   [RandNumeralOrLetter](https://github.com/duke-git/lancet/blob/v1/docs/random.md#RandNumeralOrLetter)
 -   [UUIdV4](https://github.com/duke-git/lancet/blob/v1/docs/random.md#UUIdV4)
+-   [RandUniqueIntSlice](https://github.com/duke-git/lancet/blob/v1/docs/random.md#RandUniqueIntSlice)
 
-### 9. Retry package is for executing a function repeatedly until it was successful or canceled by the context.
+### 11. Retry package is for executing a function repeatedly until it was successful or canceled by the context.
 
 ```go
 import "github.com/duke-git/lancet/retry"
@@ -286,7 +382,7 @@ import "github.com/duke-git/lancet/retry"
 -   [RetryDuration](https://github.com/duke-git/lancet/blob/v1/docs/retry.md#RetryDuration)
 -   [RetryTimes](https://github.com/duke-git/lancet/blob/v1/docs/retry.md#RetryTimes)
 
-### 10. Slice contains some functions to manipulate slice.
+### 12. Slice contains some functions to manipulate slice.
 
 ```go
 import "github.com/duke-git/lancet/slice"
@@ -334,8 +430,9 @@ import "github.com/duke-git/lancet/slice"
 -   [Union](https://github.com/duke-git/lancet/blob/v1/docs/slice.md#Union)
 -   [UpdateByIndex](https://github.com/duke-git/lancet/blob/v1/docs/slice.md#UpdateByIndex)
 -   [Without](https://github.com/duke-git/lancet/blob/v1/docs/slice.md#Without)
+-   [Join](https://github.com/duke-git/lancet/blob/v1/docs/slice.md#Join)
 
-### 11. Strutil package contains some functions to manipulate string.
+### 13. Strutil package contains some functions to manipulate string.
 
 ```go
 import "github.com/duke-git/lancet/strutil"
@@ -349,11 +446,14 @@ import "github.com/duke-git/lancet/strutil"
 -   [BeforeLast](https://github.com/duke-git/lancet/blob/v1/docs/strutil.md#BeforeLast)
 -   [CamelCase](https://github.com/duke-git/lancet/blob/v1/docs/strutil.md#CamelCase)
 -   [Capitalize](https://github.com/duke-git/lancet/blob/v1/docs/strutil.md#Capitalize)
+-   [ContainsAll](https://github.com/duke-git/lancet/blob/v1/docs/strutil.md#ContainsAll)
+-   [ContainsAny](https://github.com/duke-git/lancet/blob/v1/docs/strutil.md#ContainsAny)
 -   [IsString](https://github.com/duke-git/lancet/blob/v1/docs/strutil.md#IsString)
 -   [KebabCase](https://github.com/duke-git/lancet/blob/v1/docs/strutil.md#KebabCase)
 -   [UpperKebabCase](https://github.com/duke-git/lancet/blob/v1/docs/strutil.md#UpperKebabCase)
 -   [LowerFirst](https://github.com/duke-git/lancet/blob/v1/docs/strutil.md#LowerFirst)
 -   [UpperFirst](https://github.com/duke-git/lancet/blob/v1/docs/strutil.md#UpperFirst)
+-   [Pad](https://github.com/duke-git/lancet/blob/v1/docs/strutil.md#Pad)
 -   [PadEnd](https://github.com/duke-git/lancet/blob/v1/docs/strutil.md#PadEnd)
 -   [PadStart](https://github.com/duke-git/lancet/blob/v1/docs/strutil.md#PadStart)
 -   [Reverse](https://github.com/duke-git/lancet/blob/v1/docs/strutil.md#Reverse)
@@ -362,8 +462,32 @@ import "github.com/duke-git/lancet/strutil"
 -   [SplitEx](https://github.com/duke-git/lancet/blob/v1/docs/strutil.md#SplitEx)
 -   [Wrap](https://github.com/duke-git/lancet/blob/v1/docs/strutil.md#Wrap)
 -   [Unwrap](https://github.com/duke-git/lancet/blob/v1/docs/strutil.md#Unwrap)
+-   [SplitWords](https://github.com/duke-git/lancet/blob/v1/docs/strutil.md#SplitWords)
+-   [WordCount](https://github.com/duke-git/lancet/blob/v1/docs/strutil.md#WordCount)
+-   [RemoveNonPrintable](https://github.com/duke-git/lancet/blob/v1/docs/strutil.md#RemoveNonPrintable)
+-   [StringToBytes](https://github.com/duke-git/lancet/blob/v1/docs/strutil.md#StringToBytes)
+-   [BytesToString](https://github.com/duke-git/lancet/blob/v1/docs/strutil.md#BytesToString)
+-   [IsBlank](https://github.com/duke-git/lancet/blob/v1/docs/strutil.md#IsBlank)
+-   [HasPrefixAny](https://github.com/duke-git/lancet/blob/v1/docs/strutil.md#HasPrefixAny)
+-   [HasSuffixAny](https://github.com/duke-git/lancet/blob/v1/docs/strutil.md#HasSuffixAny)
+-   [IndexOffset](https://github.com/duke-git/lancet/blob/v1/docs/strutil.md#IndexOffset)
+-   [ReplaceWithMap](https://github.com/duke-git/lancet/blob/v1/docs/strutil.md#ReplaceWithMap)
+-   [Trim](https://github.com/duke-git/lancet/blob/v1/docs/strutil.md#Trim)
+-   [SplitAndTrim](https://github.com/duke-git/lancet/blob/v1/docs/strutil.md#SplitAndTrim)
+-   [HideString](https://github.com/duke-git/lancet/blob/v1/docs/strutil.md#HideString)
+-   [RemoveWhiteSpace](https://github.com/duke-git/lancet/blob/v1/docs/strutil.md#RemoveWhiteSpace)
+-   [SubInBetween](https://github.com/duke-git/lancet/blob/v1/docs/strutil.md#SubInBetween)
+-   [HammingDistance](https://github.com/duke-git/lancet/blob/v1/docs/strutil.md#HammingDistance)
+-   [Concat](https://github.com/duke-git/lancet/blob/v1/docs/strutil.md#Concat)
+-   [Ellipsis](https://github.com/duke-git/lancet/blob/v1/docs/strutil.md#Ellipsis)
+-   [Shuffle](https://github.com/duke-git/lancet/blob/v1/docs/strutil.md#Shuffle)
+-   [Rotate](https://github.com/duke-git/lancet/blob/v1/docs/strutil.md#Rotate)
+-   [TemplateReplace](https://github.com/duke-git/lancet/blob/v1/docs/strutil.md#TemplateReplace)
+-   [RegexMatchAllGroups](https://github.com/duke-git/lancet/blob/v1/docs/strutil.md#RegexMatchAllGroups)
+-   [Cut](https://github.com/duke-git/lancet/blob/v1/docs/strutil.md#Cut)
 
-### 12. System package contain some functions about os, runtime, shell command.
+
+### 14. System package contain some functions about os, runtime, shell command.
 
 ```go
 import "github.com/duke-git/lancet/system"
@@ -381,7 +505,7 @@ import "github.com/duke-git/lancet/system"
 -   [ExecCommand](https://github.com/duke-git/lancet/blob/v1/docs/system.md#ExecCommand)
 -   [GetOsBits](https://github.com/duke-git/lancet/blob/v1/docs/system.md#GetOsBits)
 
-### 13. Validator package contains some functions for data validation.
+### 15. Validator package contains some functions for data validation.
 
 ```go
 import "github.com/duke-git/lancet/validator"
@@ -404,11 +528,14 @@ import "github.com/duke-git/lancet/validator"
 -   [IsDns](https://github.com/duke-git/lancet/blob/v1/docs/validator.md#IsDns)
 -   [IsEmail](https://github.com/duke-git/lancet/blob/v1/docs/validator.md#IsEmail)
 -   [IsEmptyString](https://github.com/duke-git/lancet/blob/v1/docs/validator.md#IsEmptyString)
+-   [IsInt](https://github.com/duke-git/lancet/blob/v1/docs/validator.md#IsInt)
+-   [IsFloat](https://github.com/duke-git/lancet/blob/v1/docs/validator.md#IsFloat)
+-   [IsNumber](https://github.com/duke-git/lancet/blob/v1/docs/validator.md#IsNumber)
+-   [IsIntStr](https://github.com/duke-git/lancet/blob/v1/docs/validator.md#IsIntStr)
 -   [IsFloatStr](https://github.com/duke-git/lancet/blob/v1/docs/validator.md#IsFloatStr)
 -   [IsNumberStr](https://github.com/duke-git/lancet/blob/v1/docs/validator.md#IsNumberStr)
 -   [IsJSON](https://github.com/duke-git/lancet/blob/v1/docs/validator.md#IsJSON)
 -   [IsRegexMatch](https://github.com/duke-git/lancet/blob/v1/docs/validator.md#IsRegexMatch)
--   [IsIntStr](https://github.com/duke-git/lancet/blob/v1/docs/validator.md#IsIntStr)
 -   [IsIp](https://github.com/duke-git/lancet/blob/v1/docs/validator.md#IsIp)
 -   [IsIpV4](https://github.com/duke-git/lancet/blob/v1/docs/validator.md#IsIpV4)
 -   [IsIpV6](https://github.com/duke-git/lancet/blob/v1/docs/validator.md#IsIpV6)
@@ -417,6 +544,18 @@ import "github.com/duke-git/lancet/validator"
 -   [IsWeakPassword](https://github.com/duke-git/lancet/blob/v1/docs/validator.md#IsWeakPassword)
 -   [IsZeroValue](https://github.com/duke-git/lancet/blob/v1/docs/validator.md#IsZeroValue)
 -   [IsGBK](https://github.com/duke-git/lancet/blob/v1/docs/validator.md#IsGBK)
+-   [IsASCII](https://github.com/duke-git/lancet/blob/v1/docs/validator.md#IsASCII)
+-   [IsPrintable](https://github.com/duke-git/lancet/blob/v1/docs/validator.md#IsPrintable)
+-   [IsBin](https://github.com/duke-git/lancet/blob/v1/docs/validator.md#IsBin)
+-   [IsHex](https://github.com/duke-git/lancet/blob/v1/docs/validator.md#IsHex)
+-   [IsBase64URL](https://github.com/duke-git/lancet/blob/v1/docs/validator.md#IsBase64URL)
+-   [IsJWT](https://github.com/duke-git/lancet/blob/v1/docs/validator.md#IsJWT)
+-   [IsVisa](https://github.com/duke-git/lancet/blob/v1/docs/validator.md#IsVisa)
+-   [IsMasterCard](https://github.com/duke-git/lancet/blob/v1/docs/validator.md#IsMasterCard)
+-   [IsAmericanExpress](https://github.com/duke-git/lancet/blob/v1/docs/validator.md#IsAmericanExpress)
+-   [IsUnionPay](https://github.com/duke-git/lancet/blob/v1/docs/validator.md#IsUnionPay)
+-   [IsChinaUnionPay](https://github.com/duke-git/lancet/blob/v1/docs/validator.md#IsChinaUnionPay)
+
 
 ## How to Contribute
 

README_zh-CN.md

@@ -4,7 +4,7 @@
 <br/>
 
 ![Go version](https://img.shields.io/badge/go-v1.16-9cf)
-[![Release](https://img.shields.io/badge/release-1.3.6-green.svg)](https://github.com/duke-git/lancet/releases)
+[![Release](https://img.shields.io/badge/release-1.4.6-green.svg)](https://github.com/duke-git/lancet/releases)
 [![GoDoc](https://godoc.org/github.com//duke-git/lancet?status.svg)](https://pkg.go.dev/github.com/duke-git/lancet)
 [![Go Report Card](https://goreportcard.com/badge/github.com/duke-git/lancet)](https://goreportcard.com/report/github.com/duke-git/lancet)
 [![test](https://github.com/duke-git/lancet/actions/workflows/codecov.yml/badge.svg?branch=main&event=push)](https://github.com/duke-git/lancet/actions/workflows/codecov.yml)
@@ -23,7 +23,7 @@
 ## 特性
 
 -   👏 全面、高效、可复用
--   💪 200+常用 go 工具函数，支持 string、slice、datetime、net、crypt...
+-   💪 400+常用 go 工具函数，支持 string、slice、datetime、net、crypt...
 -   💅 只依赖 go 标准库
 -   🌍 所有导出函数单元测试覆盖率 100%
 
@@ -62,7 +62,22 @@ func main() {
 
 ## API 文档
 
-### 1. convertor 转换器包支持一些常见的数据类型转换。
+
+### 1. compare包提供几个轻量级的类型比较函数。
+```go
+import "github.com/duke-git/lancet/compare"
+```
+
+#### Function list:
+
+-   [Equal](https://github.com/duke-git/lancet/blob/v1/docs/compare_zh-CN.md#Equal)
+-   [EqualValue](https://github.com/duke-git/lancet/blob/v1/docs/compare_zh-CN.md#EqualValue)
+-   [LessThan](https://github.com/duke-git/lancet/blob/v1/docs/compare_zh-CN.md#LessThan)
+-   [GreaterThan](https://github.com/duke-git/lancet/blob/v1/docs/compare_zh-CN.md#GreaterThan)
+-   [LessOrEqual](https://github.com/duke-git/lancet/blob/v1/docs/compare_zh-CN.md#LessOrEqual)
+-   [GreaterOrEqual](https://github.com/duke-git/lancet/blob/v1/docs/compare_zh-CN.md#GreaterOrEqual)
+
+### 2. convertor转换器包支持一些常见的数据类型转换。
 
 ```go
 import "github.com/duke-git/lancet/convertor"
@@ -80,12 +95,22 @@ import "github.com/duke-git/lancet/convertor"
 -   [ToJson](https://github.com/duke-git/lancet/blob/v1/docs/convertor_zh-CN.md#ToJson)
 -   [ToString](https://github.com/duke-git/lancet/blob/v1/docs/convertor_zh-CN.md#ToString)
 -   [StructToMap](https://github.com/duke-git/lancet/blob/v1/docs/convertor_zh-CN.md#StructToMap)
+-   [MapToStruct](https://github.com/duke-git/lancet/blob/v1/docs/convertor_zh-CN.md#MapToStruct)
 -   [EncodeByte](https://github.com/duke-git/lancet/blob/v1/docs/convertor_zh-CN.md#EncodeByte)
 -   [DecodeByte](https://github.com/duke-git/lancet/blob/v1/docs/convertor_zh-CN.md#DecodeByte)
 -   [DeepClone](https://github.com/duke-git/lancet/blob/v1/docs/convertor_zh-CN.md#DeepClone)
+-   [CopyProperties](https://github.com/duke-git/lancet/blob/v1/docs/convertor_zh-CN.md#CopyProperties)
+-   [ToInterface](https://github.com/duke-git/lancet/blob/v1/docs/convertor_zh-CN.md#ToInterface)
+-   [Utf8ToGbk](https://github.com/duke-git/lancet/blob/v1/docs/convertor_zh-CN.md#Utf8ToGbk)
+-   [GbkToUtf8](https://github.com/duke-git/lancet/blob/v1/docs/convertor_zh-CN.md#GbkToUtf8)
+-   [ToStdBase64](https://github.com/duke-git/lancet/blob/v1/docs/convertor_zh-CN.md#ToStdBase64)
+-   [ToUrlBase64](https://github.com/duke-git/lancet/blob/v1/docs/convertor_zh-CN.md#ToUrlBase64)
+-   [ToRawStdBase64](https://github.com/duke-git/lancet/blob/v1/docs/convertor_zh-CN.md#ToRawStdBase64)
+-   [ToRawUrlBase64](https://github.com/duke-git/lancet/blob/v1/docs/convertor_zh-CN.md#ToRawUrlBase64)
+-   [ToBigInt](https://github.com/duke-git/lancet/blob/v1/docs/convertor_zh-CN.md#ToBigInt)
 
 
-### 2. cryptor 加密包支持数据加密和解密，获取 md5，hash 值。支持 base64, md5, hmac, aes, des, rsa。
+### 3. cryptor 加密包支持数据加密和解密，获取 md5，hash 值。支持 base64, md5, hmac, aes, des, rsa。
 
 ```go
 import "github.com/duke-git/lancet/cryptor"
@@ -114,19 +139,34 @@ import "github.com/duke-git/lancet/cryptor"
 -   [DesOfbEncrypt](https://github.com/duke-git/lancet/blob/v1/docs/cryptor_zh-CN.md#DesOfbEncrypt)
 -   [DesOfbDecrypt](https://github.com/duke-git/lancet/blob/v1/docs/cryptor_zh-CN.md#DesOfbDecrypt)
 -   [HmacMd5](https://github.com/duke-git/lancet/blob/v1/docs/cryptor_zh-CN.md#HmacMd5)
+-   [HmacMd5WithBase64](https://github.com/duke-git/lancet/blob/v1/docs/cryptor_zh-CN.md#HmacMd5WithBase64)
+md#HmacSha256WithBase64)
 -   [HmacSha1](https://github.com/duke-git/lancet/blob/v1/docs/cryptor_zh-CN.md#HmacSha1)
--   [HmacSha256](https://github.com/duke-git/lancet/blob/v1/docs/cryptor_zh-CN.md#HmacSha256)
+-   [HmacSha1WithBase64](https://github.com/duke-git/lancet/blob/v1/docs/cryptor_zh-CN.md#HmacSha1WithBase64)
+-   [HmacSha256](https://github.com/duke-git/lancet/blob/v1/docs/cryptor.md#HmacSha256)
+-   [HmacSha256WithBase64](https://github.com/duke-git/lancet/blob/v1/docs/cryptor_zh-CN.md#HmacSha256WithBase64)
 -   [HmacSha512](https://github.com/duke-git/lancet/blob/v1/docs/cryptor_zh-CN.md#HmacSha512)
+-   [HmacSha512WithBase64](https://github.com/duke-git/lancet/blob/v1/docs/cryptor_zh-CN.md#HmacSha512WithBase64)
 -   [Md5String](https://github.com/duke-git/lancet/blob/v1/docs/cryptor_zh-CN.md#Md5String)
+-   [Md5StringWithBase64](https://github.com/duke-git/lancet/blob/v1/docs/cryptor_zh-CN.md#Md5StringWithBase64)
+-   [Md5Byte](https://github.com/duke-git/lancet/blob/v1/docs/cryptor_zh-CN.md#Md5Byte)
+-   [Md5ByteWithBase64](https://github.com/duke-git/lancet/blob/v1/docs/cryptor_zh-CN.md#Md5ByteWithBase64)
 -   [Md5File](https://github.com/duke-git/lancet/blob/v1/docs/cryptor_zh-CN.md#Md5File)
 -   [Sha1](https://github.com/duke-git/lancet/blob/v1/docs/cryptor_zh-CN.md#Sha1)
+-   [Sha1WithBase64](https://github.com/duke-git/lancet/blob/v1/docs/cryptor_zh-CN.md#Sha1WithBase64)
 -   [Sha256](https://github.com/duke-git/lancet/blob/v1/docs/cryptor_zh-CN.md#Sha256)
+-   [Sha256WithBase64](https://github.com/duke-git/lancet/blob/v1/docs/cryptor_zh-CN.md#Sha256WithBase64)
 -   [Sha512](https://github.com/duke-git/lancet/blob/v1/docs/cryptor_zh-CN.md#Sha512)
+-   [Sha512WithBase64](https://github.com/duke-git/lancet/blob/v1/docs/cryptor_zh-CN.md#Sha512WithBase64)
 -   [GenerateRsaKey](https://github.com/duke-git/lancet/blob/v1/docs/cryptor_zh-CN.md#GenerateRsaKey)
 -   [RsaEncrypt](https://github.com/duke-git/lancet/blob/v1/docs/cryptor_zh-CN.md#RsaEncrypt)
 -   [RsaDecrypt](https://github.com/duke-git/lancet/blob/v1/docs/cryptor_zh-CN.md#RsaDecrypt)
+-   [GenerateRsaKeyPair](https://github.com/duke-git/lancet/blob/v1/docs/cryptor_zh-CN.md#GenerateRsaKeyPair)
+-   [RsaEncryptOAEP](https://github.com/duke-git/lancet/blob/v1/docs/cryptor_zh-CN.md#RsaEncryptOAEP)
+-   [RsaDecryptOAEP](https://github.com/duke-git/lancet/blob/v1/docs/cryptor_zh-CN.md#RsaDecryptOAEP)
 
-### 3. datetime 日期时间处理包，格式化日期，比较日期。
+
+### 4. datetime 日期时间处理包，格式化日期，比较日期。
 
 ```go
 import "github.com/duke-git/lancet/datetime"
@@ -137,6 +177,7 @@ import "github.com/duke-git/lancet/datetime"
 -   [AddDay](https://github.com/duke-git/lancet/blob/v1/docs/datetime_zh-CN.md#AddDay)
 -   [AddHour](https://github.com/duke-git/lancet/blob/v1/docs/datetime_zh-CN.md#AddHour)
 -   [AddMinute](https://github.com/duke-git/lancet/blob/v1/docs/datetime_zh-CN.md#AddMinute)
+-   [AddYear](https://github.com/duke-git/lancet/blob/v1/docs/datetime_zh-CN.md#AddYear)
 -   [BeginOfMinute](https://github.com/duke-git/lancet/blob/v1/docs/datetime.md#BeginOfMinute)
 -   [BeginOfHour](https://github.com/duke-git/lancet/blob/v1/docs/datetime.md#BeginOfHour)
 -   [BeginOfDay](https://github.com/duke-git/lancet/blob/v1/docs/datetime.md#BeginOfDay)
@@ -164,8 +205,20 @@ import "github.com/duke-git/lancet/datetime"
 -   [ToFormat](https://github.com/duke-git/lancet/blob/v1/docs/datetime_zh-CN.md#ToFormat)
 -   [ToFormatForTpl](https://github.com/duke-git/lancet/blob/v1/docs/datetime_zh-CN.md#ToFormatForTpl)
 -   [ToIso8601](https://github.com/duke-git/lancet/blob/v1/docs/datetime_zh-CN.md#ToIso8601)
+-   [IsLeapYear](https://github.com/duke-git/lancet/blob/v1/docs/datetime_zh-CN.md#IsLeapYear)
+-   [BetweenSeconds](https://github.com/duke-git/lancet/blob/v1/docs/datetime_zh-CN.md#BetweenSeconds)
+-   [DayOfYear](https://github.com/duke-git/lancet/blob/v1/docs/datetime_zh-CN.md#DayOfYear)
+-   [IsWeekend](https://github.com/duke-git/lancet/blob/v1/docs/datetime_zh-CN.md#IsWeekend)
+-   [NowDateOrTime](https://github.com/duke-git/lancet/blob/v1/docs/datetime_zh-CN.md#NowDateOrTime)
+-   [Timestamp](https://github.com/duke-git/lancet/blob/v1/docs/datetime_zh-CN.md#Timestamp)
+-   [TimestampMilli](https://github.com/duke-git/lancet/blob/v1/docs/datetime_zh-CN.md#TimestampMilli)
+-   [TimestampMicro](https://github.com/duke-git/lancet/blob/v1/docs/datetime_zh-CN.md#TimestampMicro)
+-   [TimestampNano](https://github.com/duke-git/lancet/blob/v1/docs/datetime_zh-CN.md#TimestampNano)
+-   [TrackFuncTime](https://github.com/duke-git/lancet/blob/v1/docs/datetime_zh-CN.md#TrackFuncTime)
+-   [DaysBetween](https://github.com/duke-git/lancet/blob/v1/docs/datetime_zh-CN.md#DaysBetween)
+-   [GenerateDatetimesBetween](https://github.com/duke-git/lancet/blob/v1/docs/datetime_zh-CN.md#GenerateDatetimesBetween)
 
-### 4. fileutil 包支持文件基本操作。
+### 5. fileutil 包支持文件基本操作。
 
 ```go
 import "github.com/duke-git/lancet/fileutil"
@@ -187,9 +240,21 @@ import "github.com/duke-git/lancet/fileutil"
 -   [ReadFileToString](https://github.com/duke-git/lancet/blob/v1/docs/fileutil_zh-CN.md#ReadFileToString)
 -   [ReadFileByLine](https://github.com/duke-git/lancet/blob/v1/docs/fileutil_zh-CN.md#ReadFileByLine)
 -   [Zip](https://github.com/duke-git/lancet/blob/v1/docs/fileutil_zh-CN.md#Zip)
+-   [ZipAppendEntry](https://github.com/duke-git/lancet/blob/v1/docs/fileutil_zh-CN.md#ZipAppendEntry)
 -   [UnZip](https://github.com/duke-git/lancet/blob/v1/docs/fileutil_zh-CN.md#UnZip)
+-   [CurrentPath](https://github.com/duke-git/lancet/blob/v1/docs/fileutil_zh-CN.md#CurrentPath)
+-   [IsZipFile](https://github.com/duke-git/lancet/blob/v1/docs/fileutil_zh-CN.md#IsZipFile)
+-   [FileSize](https://github.com/duke-git/lancet/blob/v1/docs/fileutil_zh-CN.md#FileSize)
+-   [MTime](https://github.com/duke-git/lancet/blob/v1/docs/fileutil_zh-CN.md#MTime)
+-   [Sha](https://github.com/duke-git/lancet/blob/v1/docs/fileutil_zh-CN.md#Sha)
+-   [ReadCsvFile](https://github.com/duke-git/lancet/blob/v1/docs/fileutil_zh-CN.md#ReadCsvFile)
+-   [WriteCsvFile](https://github.com/duke-git/lancet/blob/v1/docs/fileutil_zh-CN.md#WriteCsvFile)
+-   [WriteMapsToCsv](https://github.com/duke-git/lancet/blob/v1/docs/fileutil_zh-CN.md#WriteMapsToCsv)
+-   [WriteStringToFile](https://github.com/duke-git/lancet/blob/v1/docs/fileutil_zh-CN.md#WriteStringToFile)
+-   [WriteBytesToFile](https://github.com/duke-git/lancet/blob/v1/docs/fileutil_zh-CN.md#WriteBytesToFile)
+-   [ReadFile](https://github.com/duke-git/lancet/blob/v1/docs/fileutil_zh-CN.md#ReadFile)
 
-### 5. formatter 格式化器包含一些数据格式化处理方法。
+### 6. formatter 格式化器包含一些数据格式化处理方法。
 
 ```go
 import "github.com/duke-git/lancet/formatter"
@@ -198,8 +263,14 @@ import "github.com/duke-git/lancet/formatter"
 #### 函数列表:
 
 -   [Comma](https://github.com/duke-git/lancet/blob/v1/docs/formatter_zh-CN.md#Comma)
+-   [Pretty](https://github.com/duke-git/lancet/blob/v1/docs/formatter_zh-CN.md#Pretty)
+-   [PrettyToWriter](https://github.com/duke-git/lancet/blob/v1/docs/formatter_zh-CN.md#PrettyToWriter)
+-   [DecimalBytes](https://github.com/duke-git/lancet/blob/v1/docs/formatter_zh-CN.md#DecimalBytes)
+-   [BinaryBytes](https://github.com/duke-git/lancet/blob/v1/docs/formatter_zh-CN.md#BinaryBytes)
+-   [ParseDecimalBytes](https://github.com/duke-git/lancet/blob/v1/docs/formatter_zh-CN.md#ParseDecimalBytes)
+-   [ParseBinaryBytes](https://github.com/duke-git/lancet/blob/v1/docs/formatter_zh-CN.md#ParseBinaryBytes)
 
-### function 函数包控制函数执行流程，包含部分函数式编程。
+### 7. function 函数包控制函数执行流程，包含部分函数式编程。
 
 ```go
 import "github.com/duke-git/lancet/function"
@@ -212,10 +283,14 @@ import "github.com/duke-git/lancet/function"
 -   [Curry](https://github.com/duke-git/lancet/blob/v1/docs/function_zh-CN.md#Curry)
 -   [Compose](https://github.com/duke-git/lancet/blob/v1/docs/function_zh-CN.md#Compose)
 -   [Debounced](https://github.com/duke-git/lancet/blob/v1/docs/function_zh-CN.md#Debounced)
+-   [Debounce](https://github.com/duke-git/lancet/blob/v1/docs/function_zh-CN.md#Debounce)
+-   [Throttle](https://github.com/duke-git/lancet/blob/v1/docs/function_zh-CN.md#Throttle)
 -   [Delay](https://github.com/duke-git/lancet/blob/v1/docs/function_zh-CN.md#Delay)
+-   [Pipeline](https://github.com/duke-git/lancet/blob/v1/docs/function_zh-CN.md#Pipeline)
+-   [Schedule](https://github.com/duke-git/lancet/blob/v1/docs/function_zh-CN.md#Schedule)
 -   [Watcher](https://github.com/duke-git/lancet/blob/v1/docs/function_zh-CN.md#Watcher)
 
-### 6. mathutil 包实现了一些数学计算的函数。
+### 8. mathutil 包实现了一些数学计算的函数。
 
 ```go
 import "github.com/duke-git/lancet/mathutil"
@@ -230,8 +305,20 @@ import "github.com/duke-git/lancet/mathutil"
 -   [RoundToFloat](https://github.com/duke-git/lancet/blob/v1/docs/mathutil_zh-CN.md#RoundToFloat)
 -   [RoundToString](https://github.com/duke-git/lancet/blob/v1/docs/mathutil_zh-CN.md#RoundToString)
 -   [TruncRound](https://github.com/duke-git/lancet/blob/v1/docs/mathutil_zh-CN.md#TruncRound)
-
-### 7. netutil 网络包支持获取 ip 地址，发送 http 请求。
+-   [CeilToFloat](https://github.com/duke-git/lancet/blob/v1/docs/mathutil_zh-CN.md#CeilToFloat)
+-   [CeilToString](https://github.com/duke-git/lancet/blob/v1/docs/mathutil_zh-CN.md#CeilToString)
+-   [FloorToFloat](https://github.com/duke-git/lancet/blob/v1/docs/mathutil_zh-CN.md#FloorToFloat)
+-   [FloorToString](https://github.com/duke-git/lancet/blob/v1/docs/mathutil_zh-CN.md#FloorToString)
+-   [AngleToRadian](https://github.com/duke-git/lancet/blob/v1/docs/mathutil_zh-CN.md#AngleToRadian)
+-   [RadianToAngle](https://github.com/duke-git/lancet/blob/v1/docs/mathutil_zh-CN.md#RadianToAngle)
+-   [PointDistance](https://github.com/duke-git/lancet/blob/v1/docs/mathutil_zh-CN.md#PointDistance)
+-   [IsPrime](https://github.com/duke-git/lancet/blob/v1/docs/mathutil_zh-CN.md#IsPrime)
+-   [GCD](https://github.com/duke-git/lancet/blob/v1/docs/mathutil_zh-CN.md#GCD)
+-   [LCM](https://github.com/duke-git/lancet/blob/v1/docs/mathutil_zh-CN.md#LCM)
+-   [Cos](https://github.com/duke-git/lancet/blob/v1/docs/mathutil_zh-CN.md#Cos)
+-   [Sin](https://github.com/duke-git/lancet/blob/v1/docs/mathutil_zh-CN.md#Sin)
+-   [Log](https://github.com/duke-git/lancet/blob/v1/docs/mathutil_zh-CN.md#Log)
+### 9. netutil 网络包支持获取 ip 地址，发送 http 请求。
 
 ```go
 import "github.com/duke-git/lancet/netutil"
@@ -254,8 +341,12 @@ import "github.com/duke-git/lancet/netutil"
 -   [HttpPut](https://github.com/duke-git/lancet/blob/v1/docs/netutil_zh-CN.md#HttpPut)
 -   [HttpPatch](https://github.com/duke-git/lancet/blob/v1/docs/netutil_zh-CN.md#HttpPatch)
 -   [ParseHttpResponse](https://github.com/duke-git/lancet/blob/v1/docs/netutil_zh-CN.md#ParseHttpResponse)
+-   [UploadFile](https://github.com/duke-git/lancet/blob/v1/docs/netutil_zh-CN.md#UploadFile)
+-   [DownloadFile](https://github.com/duke-git/lancet/blob/v1/docs/netutil_zh-CN.md#DownloadFile)
+-   [IsPingConnected](https://github.com/duke-git/lancet/blob/v1/docs/netutil_zh-CN.md#IsPingConnected)
+-   [IsTelnetConnected](https://github.com/duke-git/lancet/blob/v1/docs/netutil_zh-CN.md#IsTelnetConnected)
 
-### 8. random 随机数生成器包，可以生成随机[]bytes, int, string。
+### 10. random 随机数生成器包，可以生成随机[]bytes, int, string。
 
 ```go
 import "github.com/duke-git/lancet/random"
@@ -263,16 +354,23 @@ import "github.com/duke-git/lancet/random"
 
 #### 函数列表:
 
+-   [RandBool](https://github.com/duke-git/lancet/blob/v1/docs/random_zh-CN.md#RandBool)
+-   [RandBoolSlice](https://github.com/duke-git/lancet/blob/v1/docs/random_zh-CN.md#RandBoolSlice)
 -   [RandBytes](https://github.com/duke-git/lancet/blob/v1/docs/random_zh-CN.md#RandBytes)
 -   [RandInt](https://github.com/duke-git/lancet/blob/v1/docs/random_zh-CN.md#RandInt)
+-   [RandIntSlice](https://github.com/duke-git/lancet/blob/v1/docs/random_zh-CN.md#RandIntSlice)
 -   [RandString](https://github.com/duke-git/lancet/blob/v1/docs/random_zh-CN.md#RandString)
+-   [RandStringSlice](https://github.com/duke-git/lancet/blob/v1/docs/random_zh-CN.md#RandStringSlice)
+-   [RandFloat](https://github.com/duke-git/lancet/blob/v1/docs/random_zh-CN.md#RandFloat)
+-   [RandFloats](https://github.com/duke-git/lancet/blob/v1/docs/random_zh-CN.md#RandFloats)
 -   [RandUpper](https://github.com/duke-git/lancet/blob/v1/docs/random_zh-CN.md#RandUpper)
 -   [RandLower](https://github.com/duke-git/lancet/blob/v1/docs/random_zh-CN.md#RandLower)
 -   [RandNumeral](https://github.com/duke-git/lancet/blob/v1/docs/random_zh-CN.md#RandNumeral)
 -   [RandNumeralOrLetter](https://github.com/duke-git/lancet/blob/v1/docs/random_zh-CN.md#RandNumeralOrLetter)
 -   [UUIdV4](https://github.com/duke-git/lancet/blob/v1/docs/random.md#UUIdV4)
+-   [RandUniqueIntSlice](https://github.com/duke-git/lancet/blob/v1/docs/random.md#RandUniqueIntSlice)
 
-### 9. retry 重试执行函数直到函数运行成功或被 context cancel。
+### 11. retry 重试执行函数直到函数运行成功或被 context cancel。
 
 ```go
 import "github.com/duke-git/lancet/retry"
@@ -286,7 +384,7 @@ import "github.com/duke-git/lancet/retry"
 -   [RetryDuration](https://github.com/duke-git/lancet/blob/v1/docs/retry_zh-CN.md#RetryDuration)
 -   [RetryTimes](https://github.com/duke-git/lancet/blob/v1/docs/retry_zh-CN.md#RetryTimes)
 
-### 10. slice 包包含操作切片的方法集合。
+### 12. slice 包包含操作切片的方法集合。
 
 ```go
 import "github.com/duke-git/lancet/slice"
@@ -334,8 +432,9 @@ import "github.com/duke-git/lancet/slice"
 -   [Union](https://github.com/duke-git/lancet/blob/v1/docs/slice_zh-CN.md#Union)
 -   [UpdateByIndex](https://github.com/duke-git/lancet/blob/v1/docs/slice_zh-CN.md#UpdateByIndex)
 -   [Without](https://github.com/duke-git/lancet/blob/v1/docs/slice_zh-CN.md#Without)
+-   [Join](https://github.com/duke-git/lancet/blob/v1/docs/slice_zh-CN.md#Join)
 
-### 12. strutil 包含处理字符串的相关函数。
+### 13. strutil 包含处理字符串的相关函数。
 
 ```go
 import "github.com/duke-git/lancet/strutil"
@@ -349,11 +448,14 @@ import "github.com/duke-git/lancet/strutil"
 -   [BeforeLast](https://github.com/duke-git/lancet/blob/v1/docs/strutil_zh-CN.md#BeforeLast)
 -   [CamelCase](https://github.com/duke-git/lancet/blob/v1/docs/strutil_zh-CN.md#CamelCase)
 -   [Capitalize](https://github.com/duke-git/lancet/blob/v1/docs/strutil_zh-CN.md#Capitalize)
+-   [ContainsAll](https://github.com/duke-git/lancet/blob/v1/docs/strutil_zh-CN.md#ContainsAll)
+-   [ContainsAny](https://github.com/duke-git/lancet/blob/v1/docs/strutil_zh-CN.md#ContainsAny)
 -   [IsString](https://github.com/duke-git/lancet/blob/v1/docs/strutil_zh-CN.md#IsString)
 -   [KebabCase](https://github.com/duke-git/lancet/blob/v1/docs/strutil_zh-CN.md#KebabCase)
 -   [UpperKebabCase](https://github.com/duke-git/lancet/blob/v1/docs/strutil_zh-CN.md#UpperKebabCase)
 -   [LowerFirst](https://github.com/duke-git/lancet/blob/v1/docs/strutil_zh-CN.md#LowerFirst)
 -   [UpperFirst](https://github.com/duke-git/lancet/blob/v1/docs/strutil_zh-CN.md#UpperFirst)
+-   [Pad](https://github.com/duke-git/lancet/blob/v1/docs/strutil_zh-CN.md#Pad)
 -   [PadEnd](https://github.com/duke-git/lancet/blob/v1/docs/strutil_zh-CN.md#PadEnd)
 -   [PadStart](https://github.com/duke-git/lancet/blob/v1/docs/strutil_zh-CN.md#PadStart)
 -   [Reverse](https://github.com/duke-git/lancet/blob/v1/docs/strutil_zh-CN.md#Reverse)
@@ -362,8 +464,31 @@ import "github.com/duke-git/lancet/strutil"
 -   [SplitEx](https://github.com/duke-git/lancet/blob/v1/docs/strutil_zh-CN.md#SplitEx)
 -   [Wrap](https://github.com/duke-git/lancet/blob/v1/docs/strutil_zh-CN.md#Wrap)
 -   [Unwrap](https://github.com/duke-git/lancet/blob/v1/docs/strutil_zh-CN.md#Unwrap)
+-   [SplitWords](https://github.com/duke-git/lancet/blob/v1/docs/strutil_zh-CN.md#SplitWords)
+-   [WordCount](https://github.com/duke-git/lancet/blob/v1/docs/strutil_zh-CN.md#WordCount)
+-   [RemoveNonPrintable](https://github.com/duke-git/lancet/blob/v1/docs/strutil_zh-CN.md#RemoveNonPrintable)
+-   [StringToBytes](https://github.com/duke-git/lancet/blob/v1/docs/strutil_zh-CN.md#StringToBytes)
+-   [BytesToString](https://github.com/duke-git/lancet/blob/v1/docs/strutil_zh-CN.md#BytesToString)
+-   [IsBlank](https://github.com/duke-git/lancet/blob/v1/docs/strutil_zh-CN.md#IsBlank)
+-   [HasPrefixAny](https://github.com/duke-git/lancet/blob/v1/docs/strutil_zh-CN.md#HasPrefixAny)
+-   [HasSuffixAny](https://github.com/duke-git/lancet/blob/v1/docs/strutil_zh-CN.md#HasSuffixAny)
+-   [IndexOffset](https://github.com/duke-git/lancet/blob/v1/docs/strutil_zh-CN.md#IndexOffset)
+-   [ReplaceWithMap](https://github.com/duke-git/lancet/blob/v1/docs/strutil_zh-CN.md#ReplaceWithMap)
+-   [Trim](https://github.com/duke-git/lancet/blob/v1/docs/strutil_zh-CN.md#Trim)
+-   [SplitAndTrim](https://github.com/duke-git/lancet/blob/v1/docs/strutil_zh-CN.md#SplitAndTrim)
+-   [HideString](https://github.com/duke-git/lancet/blob/v1/docs/strutil_zh-CN.md#HideString)
+-   [RemoveWhiteSpace](https://github.com/duke-git/lancet/blob/v1/docs/strutil_zh-CN.md#RemoveWhiteSpace)
+-   [SubInBetween](https://github.com/duke-git/lancet/blob/v1/docs/strutil_zh-CN.md#SubInBetween)
+-   [HammingDistance](https://github.com/duke-git/lancet/blob/v1/docs/strutil_zh-CN.md#HammingDistance)
+-   [Concat](https://github.com/duke-git/lancet/blob/v1/docs/strutil_zh-CN.md#Concat)
+-   [Ellipsis](https://github.com/duke-git/lancet/blob/v1/docs/strutil_zh-CN.md#Ellipsis)
+-   [Shuffle](https://github.com/duke-git/lancet/blob/v1/docs/strutil_zh-CN.md#Shuffle)
+-   [Rotate](https://github.com/duke-git/lancet/blob/v1/docs/strutil_zh-CN.md#Rotate)
+-   [TemplateReplace](https://github.com/duke-git/lancet/blob/v1/docs/strutil_zh-CN.md#TemplateReplace)
+-   [RegexMatchAllGroups](https://github.com/duke-git/lancet/blob/v1/docs/strutil_zh-CN.md#RegexMatchAllGroups)
+-   [Cut](https://github.com/duke-git/lancet/blob/v1/docs/strutil_zh-CN.md#Cut)
 
-### 13. system 包含 os, runtime, shell command 相关函数。
+### 14. system 包含 os, runtime, shell command 相关函数。
 
 ```go
 import "github.com/duke-git/lancet/system"
@@ -381,7 +506,7 @@ import "github.com/duke-git/lancet/system"
 -   [ExecCommand](https://github.com/duke-git/lancet/blob/v1/docs/system_zh-CN.md#ExecCommand)
 -   [GetOsBits](https://github.com/duke-git/lancet/blob/v1/docs/system_zh-CN.md#GetOsBits)
 
-### 14. validator 验证器包，包含常用字符串格式验证函数。
+### 15. validator 验证器包，包含常用字符串格式验证函数。
 
 ```go
 import "github.com/duke-git/lancet/validator"
@@ -404,11 +529,14 @@ import "github.com/duke-git/lancet/validator"
 -   [IsDns](https://github.com/duke-git/lancet/blob/v1/docs/validator_zh-CN.md#IsDns)
 -   [IsEmail](https://github.com/duke-git/lancet/blob/v1/docs/validator_zh-CN.md#IsEmail)
 -   [IsEmptyString](https://github.com/duke-git/lancet/blob/v1/docs/validator_zh-CN.md#IsEmptyString)
+-   [IsInt](https://github.com/duke-git/lancet/blob/v1/docs/validator_zh-CN.md#IsInt)
+-   [IsFloat](https://github.com/duke-git/lancet/blob/v1/docs/validator_zh-CN.md#IsFloat)
+-   [IsNumber](https://github.com/duke-git/lancet/blob/v1/docs/validator_zh-CN.md#IsNumber)
+-   [IsIntStr](https://github.com/duke-git/lancet/blob/v1/docs/validator_zh-CN.md#IsIntStr)
 -   [IsFloatStr](https://github.com/duke-git/lancet/blob/v1/docs/validator_zh-CN.md#IsFloatStr)
 -   [IsNumberStr](https://github.com/duke-git/lancet/blob/v1/docs/validator_zh-CN.md#IsNumberStr)
 -   [IsJSON](https://github.com/duke-git/lancet/blob/v1/docs/validator_zh-CN.md#IsJSON)
 -   [IsRegexMatch](https://github.com/duke-git/lancet/blob/v1/docs/validator_zh-CN.md#IsRegexMatch)
--   [IsIntStr](https://github.com/duke-git/lancet/blob/v1/docs/validator_zh-CN.md#IsIntStr)
 -   [IsIp](https://github.com/duke-git/lancet/blob/v1/docs/validator_zh-CN.md#IsIp)
 -   [IsIpV4](https://github.com/duke-git/lancet/blob/v1/docs/validator_zh-CN.md#IsIpV4)
 -   [IsIpV6](https://github.com/duke-git/lancet/blob/v1/docs/validator_zh-CN.md#IsIpV6)
@@ -417,6 +545,17 @@ import "github.com/duke-git/lancet/validator"
 -   [IsWeakPassword](https://github.com/duke-git/lancet/blob/v1/docs/validator_zh-CN.md#IsWeakPassword)
 -   [IsZeroValue](https://github.com/duke-git/lancet/blob/v1/docs/validator_zh-CN.md#IsZeroValue)
 -   [IsGBK](https://github.com/duke-git/lancet/blob/v1/docs/validator_zh-CN.md#IsGBK)
+-   [IsASCII](https://github.com/duke-git/lancet/blob/v1/docs/validator_zh-CN.md#IsASCII)
+-   [IsPrintable](https://github.com/duke-git/lancet/blob/v1/docs/validator_zh-CN.md#IsPrintable)
+-   [IsBin](https://github.com/duke-git/lancet/blob/v1/docs/validator_zh-CN.md#IsBin)
+-   [IsHex](https://github.com/duke-git/lancet/blob/v1/docs/validator_zh-CN.md#IsHex)
+-   [IsBase64URL](https://github.com/duke-git/lancet/blob/v1/docs/validator_zh-CN.md#IsBase64URL)
+-   [IsJWT](https://github.com/duke-git/lancet/blob/v1/docs/validator_zh-CN.md#IsJWT)
+-   [IsVisa](https://github.com/duke-git/lancet/blob/v1/docs/validator_zh-CN.md#IsVisa)
+-   [IsMasterCard](https://github.com/duke-git/lancet/blob/v1/docs/validator_zh-CN.md#IsMasterCard)
+-   [IsAmericanExpress](https://github.com/duke-git/lancet/blob/v1/docs/validator_zh-CN.md#IsAmericanExpress)
+-   [IsUnionPay](https://github.com/duke-git/lancet/blob/v1/docs/validator_zh-CN.md#IsUnionPay)
+-   [IsChinaUnionPay](https://github.com/duke-git/lancet/blob/v1/docs/validator_zh-CN.md#IsChinaUnionPay)
 
 ## 如何贡献代码
 

compare/compare.go

@@ -0,0 +1,58 @@
+// Copyright 2023 dudaodong@gmail.com. All rights resulterved.
+// Use of this source code is governed by MIT license
+
+// Package compare provides a lightweight comparison function on interface{} type.
+// reference: https://github.com/stretchr/testify
+package compare
+
+import (
+	"reflect"
+	"time"
+
+	"github.com/duke-git/lancet/convertor"
+)
+
+// operator type
+const (
+	equal          = "eq"
+	lessThan       = "lt"
+	greaterThan    = "gt"
+	lessOrEqual    = "le"
+	greaterOrEqual = "ge"
+)
+
+var (
+	timeType  = reflect.TypeOf(time.Time{})
+	bytesType = reflect.TypeOf([]byte{})
+)
+
+// Equal checks if two values are equal or not. (check both type and value)
+func Equal(left, right interface{}) bool {
+	return compareValue(equal, left, right)
+}
+
+// EqualValue checks if two values are equal or not. (check value only)
+func EqualValue(left, right interface{}) bool {
+	ls, rs := convertor.ToString(left), convertor.ToString(right)
+	return ls == rs
+}
+
+// LessThan checks if value `left` less than value `right`.
+func LessThan(left, right interface{}) bool {
+	return compareValue(lessThan, left, right)
+}
+
+// GreaterThan checks if value `left` greater than value `right`.
+func GreaterThan(left, right interface{}) bool {
+	return compareValue(greaterThan, left, right)
+}
+
+// LessOrEqual checks if value `left` less than or equal to value `right`.
+func LessOrEqual(left, right interface{}) bool {
+	return compareValue(lessOrEqual, left, right)
+}
+
+// GreaterOrEqual checks if value `left` greater than or equal to value `right`.
+func GreaterOrEqual(left, right interface{}) bool {
+	return compareValue(greaterOrEqual, left, right)
+}

compare/compare_example_test.go

@@ -0,0 +1,170 @@
+package compare
+
+import (
+	"fmt"
+	"time"
+)
+
+func ExampleEqual() {
+	result1 := Equal(1, 1)
+	result2 := Equal("1", "1")
+	result3 := Equal([]int{1, 2, 3}, []int{1, 2, 3})
+	result4 := Equal(map[int]string{1: "a", 2: "b"}, map[int]string{1: "a", 2: "b"})
+
+	result5 := Equal(1, "1")
+	result6 := Equal(1, int64(1))
+	result7 := Equal([]int{1, 2}, []int{1, 2, 3})
+
+	fmt.Println(result1)
+	fmt.Println(result2)
+	fmt.Println(result3)
+	fmt.Println(result4)
+	fmt.Println(result5)
+	fmt.Println(result6)
+	fmt.Println(result7)
+
+	// Output:
+	// true
+	// true
+	// true
+	// true
+	// false
+	// false
+	// false
+}
+
+func ExampleEqualValue() {
+	result1 := EqualValue(1, 1)
+	result2 := EqualValue(int(1), int64(1))
+	result3 := EqualValue(1, "1")
+	result4 := EqualValue(1, "2")
+
+	fmt.Println(result1)
+	fmt.Println(result2)
+	fmt.Println(result3)
+	fmt.Println(result4)
+
+	// Output:
+	// true
+	// true
+	// true
+	// false
+}
+
+func ExampleLessThan() {
+	result1 := LessThan(1, 2)
+	result2 := LessThan(1.1, 2.2)
+	result3 := LessThan("a", "b")
+
+	time1 := time.Now()
+	time2 := time1.Add(time.Second)
+	result4 := LessThan(time1, time2)
+
+	result5 := LessThan(2, 1)
+	result6 := LessThan(1, int64(2))
+
+	fmt.Println(result1)
+	fmt.Println(result2)
+	fmt.Println(result3)
+	fmt.Println(result4)
+	fmt.Println(result5)
+	fmt.Println(result6)
+
+	// Output:
+	// true
+	// true
+	// true
+	// true
+	// false
+	// false
+}
+
+func ExampleGreaterThan() {
+	result1 := GreaterThan(2, 1)
+	result2 := GreaterThan(2.2, 1.1)
+	result3 := GreaterThan("b", "a")
+
+	time1 := time.Now()
+	time2 := time1.Add(time.Second)
+	result4 := GreaterThan(time2, time1)
+
+	result5 := GreaterThan(1, 2)
+	result6 := GreaterThan(int64(2), 1)
+	result7 := GreaterThan("b", "c")
+
+	fmt.Println(result1)
+	fmt.Println(result2)
+	fmt.Println(result3)
+	fmt.Println(result4)
+	fmt.Println(result5)
+	fmt.Println(result6)
+	fmt.Println(result7)
+
+	// Output:
+	// true
+	// true
+	// true
+	// true
+	// false
+	// false
+	// false
+}
+
+func ExampleLessOrEqual() {
+	result1 := LessOrEqual(1, 1)
+	result2 := LessOrEqual(1.1, 2.2)
+	result3 := LessOrEqual("a", "b")
+
+	time1 := time.Now()
+	time2 := time1.Add(time.Second)
+	result4 := LessOrEqual(time1, time2)
+
+	result5 := LessOrEqual(2, 1)
+	result6 := LessOrEqual(1, int64(2))
+
+	fmt.Println(result1)
+	fmt.Println(result2)
+	fmt.Println(result3)
+	fmt.Println(result4)
+	fmt.Println(result5)
+	fmt.Println(result6)
+
+	// Output:
+	// true
+	// true
+	// true
+	// true
+	// false
+	// false
+}
+
+func ExampleGreaterOrEqual() {
+	result1 := GreaterOrEqual(1, 1)
+	result2 := GreaterOrEqual(2.2, 1.1)
+	result3 := GreaterOrEqual("b", "b")
+
+	time1 := time.Now()
+	time2 := time1.Add(time.Second)
+	result4 := GreaterOrEqual(time2, time1)
+
+	result5 := GreaterOrEqual(1, 2)
+	result6 := GreaterOrEqual(int64(2), 1)
+	result7 := GreaterOrEqual("b", "c")
+
+	fmt.Println(result1)
+	fmt.Println(result2)
+	fmt.Println(result3)
+	fmt.Println(result4)
+	fmt.Println(result5)
+	fmt.Println(result6)
+	fmt.Println(result7)
+
+	// Output:
+	// true
+	// true
+	// true
+	// true
+	// false
+	// false
+	// false
+}

compare/compare_internal.go

@@ -0,0 +1,297 @@
+package compare
+
+import (
+	"bytes"
+	"encoding/json"
+	"math/big"
+	"reflect"
+	"time"
+
+	"github.com/duke-git/lancet/convertor"
+)
+
+func compareValue(operator string, left, right interface{}) bool {
+	leftType, rightType := reflect.TypeOf(left), reflect.TypeOf(right)
+
+	if leftType.Kind() != rightType.Kind() {
+		return false
+	}
+
+	switch leftType.Kind() {
+	case reflect.Int, reflect.Int8, reflect.Int16, reflect.Int32, reflect.Int64,
+		reflect.Uint, reflect.Uint8, reflect.Uint16, reflect.Uint32, reflect.Uint64,
+		reflect.Float32, reflect.Float64, reflect.Bool, reflect.String:
+		return compareBasicValue(operator, left, right)
+
+	case reflect.Struct, reflect.Slice, reflect.Map:
+		return compareRefValue(operator, left, right, leftType.Kind())
+	}
+
+	return false
+}
+
+func compareRefValue(operator string, leftObj, rightObj interface{}, kind reflect.Kind) bool {
+	leftVal, rightVal := reflect.ValueOf(leftObj), reflect.ValueOf(rightObj)
+
+	switch kind {
+	case reflect.Struct:
+
+		// compare time
+		// fix: issue #275
+		if canConvert(leftObj, timeType) {
+			timeObj1, ok := leftObj.(time.Time)
+			if !ok {
+				timeObj1 = leftVal.Convert(timeType).Interface().(time.Time)
+			}
+
+			timeObj2, ok := rightObj.(time.Time)
+			if !ok {
+				timeObj2 = rightVal.Convert(timeType).Interface().(time.Time)
+			}
+
+			return compareBasicValue(operator, timeObj1.UnixNano(), timeObj2.UnixNano())
+		}
+
+		// for other struct type, only process equal operator
+		switch operator {
+		case equal:
+			return objectsAreEqualValues(leftObj, rightObj)
+		}
+
+	case reflect.Slice:
+		// compare []byte
+		if canConvert(leftObj, bytesType) {
+			bytesObj1, ok := leftObj.([]byte)
+			if !ok {
+				bytesObj1 = leftVal.Convert(bytesType).Interface().([]byte)
+			}
+			bytesObj2, ok := rightObj.([]byte)
+			if !ok {
+				bytesObj2 = rightVal.Convert(bytesType).Interface().([]byte)
+			}
+
+			switch operator {
+			case equal:
+				if bytes.Compare(bytesObj1, bytesObj2) == 0 {
+					return true
+				}
+			case lessThan:
+				if bytes.Compare(bytesObj1, bytesObj2) == -1 {
+					return true
+				}
+			case greaterThan:
+				if bytes.Compare(bytesObj1, bytesObj2) == 1 {
+					return true
+				}
+			case lessOrEqual:
+				if bytes.Compare(bytesObj1, bytesObj2) <= 0 {
+					return true
+				}
+			case greaterOrEqual:
+				if bytes.Compare(bytesObj1, bytesObj2) >= 0 {
+					return true
+				}
+			}
+
+		}
+
+		// for other type slice, only process equal operator
+		switch operator {
+		case equal:
+			return reflect.DeepEqual(leftObj, rightObj)
+		}
+
+	case reflect.Map:
+		// only process equal operator
+		switch operator {
+		case equal:
+			return reflect.DeepEqual(leftObj, rightObj)
+		}
+	}
+
+	return false
+}
+
+func objectsAreEqualValues(expected, actual interface{}) bool {
+	if objectsAreEqual(expected, actual) {
+		return true
+	}
+
+	actualType := reflect.TypeOf(actual)
+	if actualType == nil {
+		return false
+	}
+	expectedValue := reflect.ValueOf(expected)
+	if expectedValue.IsValid() && expectedValue.Type().ConvertibleTo(actualType) {
+		// Attempt comparison after type conversion
+		return reflect.DeepEqual(expectedValue.Convert(actualType).Interface(), actual)
+	}
+
+	return false
+}
+
+func objectsAreEqual(expected, actual interface{}) bool {
+	if expected == nil || actual == nil {
+		return expected == actual
+	}
+
+	exp, ok := expected.([]byte)
+	if !ok {
+		return reflect.DeepEqual(expected, actual)
+	}
+
+	act, ok := actual.([]byte)
+	if !ok {
+		return false
+	}
+	if exp == nil || act == nil {
+		return exp == nil && act == nil
+	}
+	return bytes.Equal(exp, act)
+}
+
+// compareBasic compare basic value: integer, float, string, bool
+func compareBasicValue(operator string, leftValue, rightValue interface{}) bool {
+	if leftValue == nil && rightValue == nil && operator == equal {
+		return true
+	}
+
+	switch leftVal := leftValue.(type) {
+	case int, uint, int8, uint8, int16, uint16, int32, uint32, int64, uint64:
+		left, err := convertor.ToBigInt(leftValue)
+		if err != nil {
+			return false
+		}
+
+		right, err := convertor.ToBigInt(rightValue)
+		if err != nil {
+			return false
+		}
+
+		return compareBigInt(operator, left, right)
+
+	case float32, float64:
+		left, err := convertor.ToFloat(leftValue)
+		if err != nil {
+			return false
+		}
+		right, err := convertor.ToFloat(rightValue)
+		if err != nil {
+			return false
+		}
+
+		return compareFloats(operator, left, right)
+
+	case string:
+		left := leftVal
+		switch right := rightValue.(type) {
+		case string:
+			return compareStrings(operator, left, right)
+		}
+
+	case bool:
+		left := leftVal
+		switch right := rightValue.(type) {
+		case bool:
+			return compareBools(operator, left, right)
+		}
+
+	case json.Number:
+		if left, err := leftVal.Float64(); err == nil {
+			switch rightVal := rightValue.(type) {
+			case json.Number:
+				if right, err := rightVal.Float64(); err == nil {
+					return compareFloats(operator, left, right)
+				}
+			case float32, float64:
+				right, err := convertor.ToFloat(rightValue)
+				if err != nil {
+					return false
+				}
+				return compareFloats(operator, left, right)
+
+			case int, uint, int8, uint8, int16, uint16, int32, uint32, int64, uint64:
+				right, err := convertor.ToBigInt(rightValue)
+				if err != nil {
+					return false
+				}
+				left, err := convertor.ToBigInt(left)
+				return compareBigInt(operator, left, right)
+			}
+		}
+	}
+
+	return false
+}
+
+// compareBigInt compares two big.Int values based on the operator
+func compareBigInt(operator string, left, right *big.Int) bool {
+	switch operator {
+	case equal:
+		return left.Cmp(right) == 0
+	case lessThan:
+		return left.Cmp(right) < 0
+	case greaterThan:
+		return left.Cmp(right) > 0
+	case lessOrEqual:
+		return left.Cmp(right) <= 0
+	case greaterOrEqual:
+		return left.Cmp(right) >= 0
+	}
+	return false
+}
+
+// compareFloats compares two float64 values based on the operator
+func compareFloats(operator string, left, right float64) bool {
+	switch operator {
+	case equal:
+		return left == right
+	case lessThan:
+		return left < right
+	case greaterThan:
+		return left > right
+	case lessOrEqual:
+		return left <= right
+	case greaterOrEqual:
+		return left >= right
+	}
+	return false
+}
+
+// compareStrings compares two string values based on the operator
+func compareStrings(operator string, left, right string) bool {
+	switch operator {
+	case equal:
+		return left == right
+	case lessThan:
+		return left < right
+	case greaterThan:
+		return left > right
+	case lessOrEqual:
+		return left <= right
+	case greaterOrEqual:
+		return left >= right
+	}
+	return false
+}
+
+// compareBools compares two boolean values based on the operator
+func compareBools(operator string, left, right bool) bool {
+	switch operator {
+	case equal:
+		return left == right
+	}
+	return false
+}
+
+// canConvert checks if the value can be converted to the target type
+func canConvert(value interface{}, targetType reflect.Type) bool {
+	v := reflect.ValueOf(value)
+
+	defer func() {
+		if r := recover(); r != nil {
+		}
+	}()
+	v.Convert(targetType)
+	return true
+}

compare/compare_test.go

@@ -0,0 +1,145 @@
+package compare
+
+import (
+	"encoding/json"
+	"testing"
+	"time"
+
+	"github.com/duke-git/lancet/internal"
+)
+
+func TestEqual(t *testing.T) {
+	assert := internal.NewAssert(t, "TestEqual")
+
+	assert.Equal(true, Equal(1, 1))
+	assert.Equal(true, Equal(int64(1), int64(1)))
+	assert.Equal(true, Equal("a", "a"))
+	assert.Equal(true, Equal(true, true))
+	assert.Equal(true, Equal([]int{1, 2, 3}, []int{1, 2, 3}))
+	assert.Equal(true, Equal(map[int]string{1: "a", 2: "b"}, map[int]string{1: "a", 2: "b"}))
+
+	assert.Equal(false, Equal(1, 2))
+	assert.Equal(false, Equal(1, int64(1)))
+	assert.Equal(false, Equal("a", "b"))
+	assert.Equal(false, Equal(true, false))
+	assert.Equal(false, Equal([]int{1, 2}, []int{1, 2, 3}))
+	assert.Equal(false, Equal(map[int]string{1: "a", 2: "b"}, map[int]string{1: "a"}))
+
+	time1 := time.Now()
+	time2 := time1.Add(time.Second)
+	time3 := time1.Add(time.Second)
+
+	assert.Equal(false, Equal(time1, time2))
+	assert.Equal(true, Equal(time2, time3))
+
+	st1 := struct {
+		A string
+		B string
+	}{
+		A: "a",
+		B: "b",
+	}
+
+	st2 := struct {
+		A string
+		B string
+	}{
+		A: "a",
+		B: "b",
+	}
+
+	st3 := struct {
+		A string
+		B string
+	}{
+		A: "a1",
+		B: "b",
+	}
+
+	assert.Equal(true, Equal(st1, st2))
+	assert.Equal(false, Equal(st1, st3))
+}
+
+func TestEqualValue(t *testing.T) {
+	assert := internal.NewAssert(t, "TestEqualValue")
+
+	assert.Equal(true, EqualValue(1, 1))
+	assert.Equal(true, EqualValue(int(1), int64(1)))
+	assert.Equal(true, EqualValue(1, "1"))
+
+	assert.Equal(false, EqualValue(1, "2"))
+}
+
+func TestLessThan(t *testing.T) {
+	t.Parallel()
+	assert := internal.NewAssert(t, "TestLessThan")
+
+	tests := []struct {
+		left  interface{}
+		right interface{}
+		want  bool
+	}{
+		{1, 2, true},
+		{1.1, 2.2, true},
+		{"a", "b", true},
+		{time.Now(), time.Now().Add(time.Second), true},
+		{[]byte("hello1"), []byte("hello2"), true},
+		{json.Number("123"), json.Number("124"), true},
+		{645680099112988673, 645680099112988675, true},
+		{1, 1, false},
+		{1, int64(1), false},
+	}
+
+	for _, tt := range tests {
+		assert.Equal(tt.want, LessThan(tt.left, tt.right))
+	}
+}
+
+func TestGreaterThan(t *testing.T) {
+	assert := internal.NewAssert(t, "TestGreaterThan")
+
+	assert.Equal(true, GreaterThan(2, 1))
+	assert.Equal(true, GreaterThan(2.2, 1.1))
+	assert.Equal(true, GreaterThan("b", "a"))
+
+	time1 := time.Now()
+	time2 := time1.Add(time.Second)
+	assert.Equal(true, GreaterThan(time2, time1))
+
+	assert.Equal(false, GreaterThan(1, 2))
+	assert.Equal(false, GreaterThan(int64(2), 1))
+	assert.Equal(false, GreaterThan("b", "c"))
+}
+
+func TestLessOrEqual(t *testing.T) {
+	assert := internal.NewAssert(t, "TestLessOrEqual")
+
+	assert.Equal(true, LessOrEqual(1, 2))
+	assert.Equal(true, LessOrEqual(1, 1))
+	assert.Equal(true, LessOrEqual(1.1, 2.2))
+	assert.Equal(true, LessOrEqual("a", "b"))
+
+	time1 := time.Now()
+	time2 := time1.Add(time.Second)
+	assert.Equal(true, LessOrEqual(time1, time2))
+
+	assert.Equal(false, LessOrEqual(2, 1))
+	assert.Equal(false, LessOrEqual(1, int64(2)))
+}
+
+func TestGreaterOrEqual(t *testing.T) {
+	assert := internal.NewAssert(t, "TestGreaterThan")
+
+	assert.Equal(true, GreaterOrEqual(2, 1))
+	assert.Equal(true, GreaterOrEqual(1, 1))
+	assert.Equal(true, GreaterOrEqual(2.2, 1.1))
+	assert.Equal(true, GreaterOrEqual("b", "b"))
+
+	time1 := time.Now()
+	time2 := time1.Add(time.Second)
+	assert.Equal(true, GreaterOrEqual(time2, time1))
+
+	assert.Equal(false, GreaterOrEqual(1, 2))
+	assert.Equal(false, GreaterOrEqual(int64(2), 1))
+	assert.Equal(false, GreaterOrEqual("b", "c"))
+}

convertor/convertor.go

@@ -6,15 +6,22 @@ package convertor
 
 import (
 	"bytes"
+	"encoding/base64"
 	"encoding/binary"
 	"encoding/gob"
 	"encoding/json"
+	"errors"
 	"fmt"
+	"io"
 	"math"
+	"math/big"
 	"reflect"
 	"regexp"
 	"strconv"
 	"strings"
+
+	"golang.org/x/text/encoding/simplifiedchinese"
+	"golang.org/x/text/transform"
 )
 
 // ToBool convert string to a boolean
@@ -77,33 +84,45 @@ func ToChar(s string) []string {
 
 // ToString convert value to string
 func ToString(value interface{}) string {
-	res := ""
 	if value == nil {
-		return res
+		return ""
 	}
 
-	v := reflect.ValueOf(value)
-
-	switch value.(type) {
-	case float32, float64:
-		res = strconv.FormatFloat(v.Float(), 'f', -1, 64)
-		return res
-	case int, int8, int16, int32, int64:
-		res = strconv.FormatInt(v.Int(), 10)
-		return res
-	case uint, uint8, uint16, uint32, uint64:
-		res = strconv.FormatUint(v.Uint(), 10)
-		return res
+	switch val := value.(type) {
+	case float32:
+		return strconv.FormatFloat(float64(val), 'f', -1, 32)
+	case float64:
+		return strconv.FormatFloat(val, 'f', -1, 64)
+	case int:
+		return strconv.FormatInt(int64(val), 10)
+	case int8:
+		return strconv.FormatInt(int64(val), 10)
+	case int16:
+		return strconv.FormatInt(int64(val), 10)
+	case int32:
+		return strconv.FormatInt(int64(val), 10)
+	case int64:
+		return strconv.FormatInt(val, 10)
+	case uint:
+		return strconv.FormatUint(uint64(val), 10)
+	case uint8:
+		return strconv.FormatUint(uint64(val), 10)
+	case uint16:
+		return strconv.FormatUint(uint64(val), 10)
+	case uint32:
+		return strconv.FormatUint(uint64(val), 10)
+	case uint64:
+		return strconv.FormatUint(val, 10)
 	case string:
-		res = v.String()
-		return res
+		return val
 	case []byte:
-		res = string(v.Bytes())
-		return res
+		return string(val)
 	default:
-		newValue, _ := json.Marshal(value)
-		res = string(newValue)
-		return res
+		b, err := json.Marshal(val)
+		if err != nil {
+			return ""
+		}
+		return string(b)
 	}
 }
 
@@ -179,6 +198,7 @@ func StructToMap(value interface{}) (map[string]interface{}, error) {
 
 	if t.Kind() == reflect.Ptr {
 		t = t.Elem()
+		v = v.Elem()
 	}
 	if t.Kind() != reflect.Struct {
 		return nil, fmt.Errorf("data type %T not support, shuld be struct or pointer to struct", value)
@@ -276,3 +296,201 @@ func DeepClone(src interface{}) interface{} {
 
 	return result.Interface()
 }
+
+// CopyProperties copies each field from the source into the destination. It recursively copies struct pointers and interfaces that contain struct pointers.
+// use json.Marshal/Unmarshal, so json tag should be set for fields of dst and src struct.
+func CopyProperties(dst, src interface{}) error {
+	dstType, srcType := reflect.TypeOf(dst), reflect.TypeOf(src)
+
+	if dstType.Kind() != reflect.Ptr || dstType.Elem().Kind() != reflect.Struct {
+		return errors.New("CopyProperties: parameter dst should be struct pointer")
+	}
+
+	if srcType.Kind() == reflect.Ptr {
+		srcType = srcType.Elem()
+	}
+	if srcType.Kind() != reflect.Struct {
+		return errors.New("CopyProperties: parameter src should be a struct or struct pointer")
+	}
+
+	bytes, err := json.Marshal(src)
+	if err != nil {
+		return fmt.Errorf("CopyProperties: unable to marshal src: %s", err)
+	}
+	err = json.Unmarshal(bytes, dst)
+	if err != nil {
+		return fmt.Errorf("CopyProperties: unable to unmarshal into dst: %s", err)
+	}
+
+	return nil
+}
+
+// ToInterface converts reflect value to its interface type.
+func ToInterface(v reflect.Value) (value interface{}, ok bool) {
+	if v.IsValid() && v.CanInterface() {
+		return v.Interface(), true
+	}
+	switch v.Kind() {
+	case reflect.Bool:
+		return v.Bool(), true
+	case reflect.Int, reflect.Int8, reflect.Int16, reflect.Int32, reflect.Int64:
+		return v.Int(), true
+	case reflect.Uint, reflect.Uint8, reflect.Uint16, reflect.Uint32, reflect.Uint64, reflect.Uintptr:
+		return v.Uint(), true
+	case reflect.Float32, reflect.Float64:
+		return v.Float(), true
+	case reflect.Complex64, reflect.Complex128:
+		return v.Complex(), true
+	case reflect.String:
+		return v.String(), true
+	case reflect.Ptr:
+		return ToInterface(v.Elem())
+	case reflect.Interface:
+		return ToInterface(v.Elem())
+	default:
+		return nil, false
+	}
+}
+
+// Utf8ToGbk convert utf8 encoding data to GBK encoding data.
+func Utf8ToGbk(bs []byte) ([]byte, error) {
+	r := transform.NewReader(bytes.NewReader(bs), simplifiedchinese.GBK.NewEncoder())
+	b, err := io.ReadAll(r)
+	return b, err
+}
+
+// GbkToUtf8 convert GBK encoding data to utf8 encoding data.
+func GbkToUtf8(bs []byte) ([]byte, error) {
+	r := transform.NewReader(bytes.NewReader(bs), simplifiedchinese.GBK.NewDecoder())
+	b, err := io.ReadAll(r)
+	return b, err
+}
+
+// MapToStruct converts map to struct
+func MapToStruct(m map[string]interface{}, structObj interface{}) error {
+	for k, v := range m {
+		err := setStructField(structObj, k, v)
+		if err != nil {
+			return err
+		}
+	}
+
+	return nil
+}
+
+// ToStdBase64 convert data to standard base64 encoding.
+func ToStdBase64(value interface{}) string {
+	if value == nil || (reflect.ValueOf(value).Kind() == reflect.Ptr && reflect.ValueOf(value).IsNil()) {
+		return ""
+	}
+	switch value.(type) {
+	case []byte:
+		return base64.StdEncoding.EncodeToString(value.([]byte))
+	case string:
+		return base64.StdEncoding.EncodeToString([]byte(value.(string)))
+	case error:
+		return base64.StdEncoding.EncodeToString([]byte(value.(error).Error()))
+	default:
+		marshal, err := json.Marshal(value)
+		if err != nil {
+			return ""
+		}
+		return base64.StdEncoding.EncodeToString(marshal)
+	}
+}
+
+// ToUrlBase64 convert data to URL base64 encoding.
+func ToUrlBase64(value interface{}) string {
+	if value == nil || (reflect.ValueOf(value).Kind() == reflect.Ptr && reflect.ValueOf(value).IsNil()) {
+		return ""
+	}
+	switch value.(type) {
+	case []byte:
+		return base64.URLEncoding.EncodeToString(value.([]byte))
+	case string:
+		return base64.URLEncoding.EncodeToString([]byte(value.(string)))
+	case error:
+		return base64.URLEncoding.EncodeToString([]byte(value.(error).Error()))
+	default:
+		marshal, err := json.Marshal(value)
+		if err != nil {
+			return ""
+		}
+		return base64.URLEncoding.EncodeToString(marshal)
+	}
+}
+
+// ToRawStdBase64 convert data to raw standard base64 encoding.
+func ToRawStdBase64(value interface{}) string {
+	if value == nil || (reflect.ValueOf(value).Kind() == reflect.Ptr && reflect.ValueOf(value).IsNil()) {
+		return ""
+	}
+	switch value.(type) {
+	case []byte:
+		return base64.RawStdEncoding.EncodeToString(value.([]byte))
+	case string:
+		return base64.RawStdEncoding.EncodeToString([]byte(value.(string)))
+	case error:
+		return base64.RawStdEncoding.EncodeToString([]byte(value.(error).Error()))
+	default:
+		marshal, err := json.Marshal(value)
+		if err != nil {
+			return ""
+		}
+		return base64.RawStdEncoding.EncodeToString(marshal)
+	}
+}
+
+// ToRawUrlBase64 convert data to raw URL base64 encoding.
+func ToRawUrlBase64(value interface{}) string {
+	if value == nil || (reflect.ValueOf(value).Kind() == reflect.Ptr && reflect.ValueOf(value).IsNil()) {
+		return ""
+	}
+	switch value.(type) {
+	case []byte:
+		return base64.RawURLEncoding.EncodeToString(value.([]byte))
+	case string:
+		return base64.RawURLEncoding.EncodeToString([]byte(value.(string)))
+	case error:
+		return base64.RawURLEncoding.EncodeToString([]byte(value.(error).Error()))
+	default:
+		marshal, err := json.Marshal(value)
+		if err != nil {
+			return ""
+		}
+		return base64.RawURLEncoding.EncodeToString(marshal)
+	}
+}
+
+// ToBigInt converts an integer of any supported type (int, int64, uint64, etc.) to *big.Int
+// Play: todo
+func ToBigInt(v interface{}) (*big.Int, error) {
+	result := new(big.Int)
+
+	switch v := (v).(type) {
+	case int:
+		result.SetInt64(int64(v))
+	case int8:
+		result.SetInt64(int64(v))
+	case int16:
+		result.SetInt64(int64(v))
+	case int32:
+		result.SetInt64(int64(v))
+	case int64:
+		result.SetInt64(v)
+	case uint:
+		result.SetUint64(uint64(v))
+	case uint8:
+		result.SetUint64(uint64(v))
+	case uint16:
+		result.SetUint64(uint64(v))
+	case uint32:
+		result.SetUint64(uint64(v))
+	case uint64:
+		result.SetUint64(v)
+	default:
+		return nil, fmt.Errorf("unsupported type: %T", v)
+	}
+
+	return result, nil
+}

convertor/convertor_internal.go

@@ -4,7 +4,10 @@
 // Package convertor implements some functions to convert data.
 package convertor
 
-import "reflect"
+import (
+	"fmt"
+	"reflect"
+)
 
 type cloner struct {
 	ptrs map[reflect.Type]map[uintptr]reflect.Value
@@ -214,3 +217,82 @@ func (c *cloner) cloneStruct(v reflect.Value) reflect.Value {
 
 	return clonedStruct
 }
+
+func setStructField(structObj interface{}, fieldName string, fieldValue interface{}) error {
+	structVal := reflect.ValueOf(structObj).Elem()
+
+	fName := getFieldNameByJsonTag(structObj, fieldName)
+	if fName == "" {
+		return fmt.Errorf("Struct field json tag don't match map key : %s in obj", fieldName)
+	}
+
+	fieldVal := structVal.FieldByName(fName)
+
+	if !fieldVal.IsValid() {
+		return fmt.Errorf("No such field: %s in obj", fieldName)
+	}
+
+	if !fieldVal.CanSet() {
+		return fmt.Errorf("Cannot set %s field value", fieldName)
+	}
+
+	val := reflect.ValueOf(fieldValue)
+
+	if fieldVal.Type() != val.Type() {
+
+		// fix: issue #275
+		if canConvert(fieldValue, fieldVal.Type()) {
+			fieldVal.Set(val.Convert(fieldVal.Type()))
+			return nil
+		}
+
+		if m, ok := fieldValue.(map[string]interface{}); ok {
+
+			if fieldVal.Kind() == reflect.Struct {
+				return MapToStruct(m, fieldVal.Addr().Interface())
+			}
+
+			if fieldVal.Kind() == reflect.Ptr && fieldVal.Type().Elem().Kind() == reflect.Struct {
+				if fieldVal.IsNil() {
+					fieldVal.Set(reflect.New(fieldVal.Type().Elem()))
+				}
+
+				return MapToStruct(m, fieldVal.Interface())
+			}
+
+		}
+
+		return fmt.Errorf("Map value type don't match struct field type")
+	}
+
+	fieldVal.Set(val)
+
+	return nil
+}
+
+func getFieldNameByJsonTag(structObj interface{}, jsonTag string) string {
+	s := reflect.TypeOf(structObj).Elem()
+
+	for i := 0; i < s.NumField(); i++ {
+		field := s.Field(i)
+		tag := field.Tag
+		name := tag.Get("json")
+
+		if name == jsonTag {
+			return field.Name
+		}
+	}
+
+	return ""
+}
+
+func canConvert(value interface{}, targetType reflect.Type) bool {
+	v := reflect.ValueOf(value)
+
+	defer func() {
+		if r := recover(); r != nil {
+		}
+	}()
+	v.Convert(targetType)
+	return true
+}

convertor/convertor_test.go

@@ -1,11 +1,18 @@
 package convertor
 
 import (
+	"encoding/base64"
+	"errors"
 	"fmt"
+	"io"
+	"math/big"
 	"reflect"
 	"testing"
+	"unicode/utf8"
+	"unsafe"
 
 	"github.com/duke-git/lancet/internal"
+	"github.com/duke-git/lancet/validator"
 )
 
 func TestToChar(t *testing.T) {
@@ -119,7 +126,7 @@ func TestToString(t *testing.T) {
 		"", "",
 		"0", "1", "-1",
 		"123", "123", "123", "123", "123", "123", "123",
-		"12.3", "12.300000190734863",
+		"12.3", "12.3",
 		"true", "false",
 		"[1,2,3]", "{\"a\":1,\"b\":2,\"c\":3}", "{\"Name\":\"TestStruct\"}", "hello"}
 
@@ -150,13 +157,17 @@ func TestStructToMap(t *testing.T) {
 		Name string `json:"name"`
 		age  int
 	}
-	p := People{
+	p := &People{
 		"test",
 		100,
 	}
 	pm, _ := StructToMap(p)
-	var expected = map[string]interface{}{"name": "test"}
+	data, _ := StructToMap(p)
+	var expected = map[string]interface{}{
+		"name": "test",
+	}
 	assert.Equal(expected, pm)
+	assert.Equal(expected, data)
 }
 
 func TestColorHexToRGB(t *testing.T) {
@@ -258,3 +269,499 @@ func TestDeepClone(t *testing.T) {
 		}
 	}
 }
+
+func TestCopyProperties(t *testing.T) {
+	assert := internal.NewAssert(t, "TestCopyProperties")
+
+	type Disk struct {
+		Name    string  `json:"name"`
+		Total   string  `json:"total"`
+		Used    string  `json:"used"`
+		Percent float64 `json:"percent"`
+	}
+
+	type DiskVO struct {
+		Name    string  `json:"name"`
+		Total   string  `json:"total"`
+		Used    string  `json:"used"`
+		Percent float64 `json:"percent"`
+	}
+
+	type Indicator struct {
+		Id      string    `json:"id"`
+		Ip      string    `json:"ip"`
+		UpTime  string    `json:"upTime"`
+		LoadAvg string    `json:"loadAvg"`
+		Cpu     int       `json:"cpu"`
+		Disk    []Disk    `json:"disk"`
+		Stop    chan bool `json:"-"`
+	}
+
+	type IndicatorVO struct {
+		Id      string   `json:"id"`
+		Ip      string   `json:"ip"`
+		UpTime  string   `json:"upTime"`
+		LoadAvg string   `json:"loadAvg"`
+		Cpu     int64    `json:"cpu"`
+		Disk    []DiskVO `json:"disk"`
+	}
+
+	indicator := &Indicator{Id: "001", Ip: "127.0.0.1", Cpu: 1, Disk: []Disk{
+		{Name: "disk-001", Total: "100", Used: "1", Percent: 10},
+		{Name: "disk-002", Total: "200", Used: "1", Percent: 20},
+		{Name: "disk-003", Total: "300", Used: "1", Percent: 30},
+	}}
+
+	indicatorVO := IndicatorVO{}
+
+	err := CopyProperties(&indicatorVO, indicator)
+
+	assert.IsNil(err)
+	assert.Equal("001", indicatorVO.Id)
+	assert.Equal("127.0.0.1", indicatorVO.Ip)
+	assert.Equal(3, len(indicatorVO.Disk))
+}
+
+func TestToInterface(t *testing.T) {
+	assert := internal.NewAssert(t, "TestToInterface")
+
+	cases := []reflect.Value{
+		reflect.ValueOf("abc"),
+		reflect.ValueOf(int(0)), reflect.ValueOf(int8(1)), reflect.ValueOf(int16(-1)), reflect.ValueOf(int32(123)), reflect.ValueOf(int64(123)),
+		reflect.ValueOf(uint(123)), reflect.ValueOf(uint8(123)), reflect.ValueOf(uint16(123)), reflect.ValueOf(uint32(123)), reflect.ValueOf(uint64(123)),
+		reflect.ValueOf(float64(12.3)), reflect.ValueOf(float32(12.3)),
+		reflect.ValueOf(true), reflect.ValueOf(false),
+	}
+
+	expected := []interface{}{
+		"abc",
+		0, int8(1), int16(-1), int32(123), int64(123),
+		uint(123), uint8(123), uint16(123), uint32(123), uint64(123),
+		float64(12.3), float32(12.3),
+		true, false,
+	}
+
+	for i := 0; i < len(cases); i++ {
+		actual, _ := ToInterface(cases[i])
+		assert.Equal(expected[i], actual)
+	}
+
+	nilVal, ok := ToInterface(reflect.ValueOf(nil))
+	assert.EqualValues(nil, nilVal)
+	assert.Equal(false, ok)
+}
+
+func TestUtf8ToGbk(t *testing.T) {
+	assert := internal.NewAssert(t, "TestUtf8ToGbk")
+
+	utf8Data := []byte("hello")
+	gbkData, err := Utf8ToGbk(utf8Data)
+
+	assert.Equal(true, utf8.Valid(utf8Data))
+	assert.Equal(true, validator.IsGBK(gbkData))
+	assert.IsNil(err)
+}
+
+func TestGbkToUtf8(t *testing.T) {
+	assert := internal.NewAssert(t, "TestGbkToUtf8")
+
+	gbkData, err := Utf8ToGbk([]byte("hello"))
+	utf8Data, err := GbkToUtf8(gbkData)
+
+	assert.IsNil(err)
+	assert.Equal(true, utf8.Valid(utf8Data))
+	assert.Equal("hello", string(utf8Data))
+}
+
+func TestMapToStruct(t *testing.T) {
+	t.Parallel()
+
+	assert := internal.NewAssert(t, "TestMapToStruct")
+
+	type Address struct {
+		Street string `json:"street"`
+		Number int    `json:"number"`
+	}
+
+	type Person struct {
+		Name  string   `json:"name"`
+		Age   int      `json:"age"`
+		Phone string   `json:"phone"`
+		Addr  *Address `json:"address"`
+	}
+
+	m := map[string]interface{}{
+		"name":  "Nothin",
+		"age":   28,
+		"phone": "123456789",
+		"address": map[string]interface{}{
+			"street": "test",
+			"number": 1,
+		},
+	}
+
+	var p Person
+	err := MapToStruct(m, &p)
+	assert.IsNil(err)
+	assert.Equal(m["name"], p.Name)
+	assert.Equal(m["age"], p.Age)
+	assert.Equal(m["phone"], p.Phone)
+	assert.Equal("test", p.Addr.Street)
+	assert.Equal(1, p.Addr.Number)
+}
+
+func TestToStdBase64(t *testing.T) {
+	t.Parallel()
+	assert := internal.NewAssert(t, "TestToStdBase64")
+
+	r1 := ToStdBase64("abc")
+	d1, _ := base64.StdEncoding.DecodeString(r1)
+	assert.Equal("abc", string(d1))
+
+	r2 := ToStdBase64([]byte("abc"))
+	d2, _ := base64.StdEncoding.DecodeString(r2)
+	assert.Equal("abc", string(d2))
+
+	r3 := ToStdBase64(123)
+	d3, _ := base64.StdEncoding.DecodeString(r3)
+	assert.Equal("123", string(d3))
+
+	r4 := ToStdBase64(11.11)
+	d4, _ := base64.StdEncoding.DecodeString(r4)
+	assert.Equal("11.11", string(d4))
+
+	r5 := ToStdBase64(map[string]interface{}{"name": "duke", "quantity": 1})
+	d5, _ := base64.StdEncoding.DecodeString(r5)
+	assert.Equal("{\"name\":\"duke\",\"quantity\":1}", string(d5))
+
+	r6 := ToStdBase64([]int64{7, 5, 9, 4, 23})
+	d6, _ := base64.StdEncoding.DecodeString(r6)
+	assert.Equal("[7,5,9,4,23]", string(d6))
+
+	r7 := ToStdBase64([]string{"7", "5", "9", "4", "23"})
+	d7, _ := base64.StdEncoding.DecodeString(r7)
+	assert.Equal("[\"7\",\"5\",\"9\",\"4\",\"23\"]", string(d7))
+
+	r8 := ToStdBase64(nil)
+	d8, _ := base64.StdEncoding.DecodeString(r8)
+	assert.Equal("", string(d8))
+
+	ch := make(chan int, 3)
+	ch <- 1
+	ch <- 2
+	r9 := ToStdBase64(ch)
+	d9, _ := base64.StdEncoding.DecodeString(r9)
+	assert.Equal("", string(d9))
+
+	r10 := ToStdBase64(io.EOF)
+	d10, _ := base64.StdEncoding.DecodeString(r10)
+	assert.Equal("EOF", string(d10))
+
+	r11 := ToStdBase64(errors.New("test"))
+	d11, _ := base64.StdEncoding.DecodeString(r11)
+	assert.Equal("test", string(d11))
+
+	typedNil := (*int)(nil)
+	r12 := ToStdBase64(typedNil)
+	d12, _ := base64.StdEncoding.DecodeString(r12)
+	assert.Equal("", string(d12))
+
+	type nilInterface interface {
+	}
+	var nI nilInterface = nil
+	d13, _ := base64.StdEncoding.DecodeString(ToStdBase64(nI))
+	assert.Equal("", string(d13))
+
+	var p unsafe.Pointer
+	d14, _ := base64.StdEncoding.DecodeString(ToStdBase64(p))
+	assert.Equal("", string(d14))
+}
+
+func TestToUrlBase64(t *testing.T) {
+	t.Parallel()
+	assert := internal.NewAssert(t, "TestToUrlBase64")
+
+	r1 := ToUrlBase64("abc")
+	d1, _ := base64.URLEncoding.DecodeString(r1)
+	assert.Equal("abc", string(d1))
+
+	r2 := ToUrlBase64([]byte("abc"))
+	d2, _ := base64.URLEncoding.DecodeString(r2)
+	assert.Equal("abc", string(d2))
+
+	r3 := ToUrlBase64(123)
+	d3, _ := base64.URLEncoding.DecodeString(r3)
+	assert.Equal("123", string(d3))
+
+	r4 := ToUrlBase64(11.11)
+	d4, _ := base64.URLEncoding.DecodeString(r4)
+	assert.Equal("11.11", string(d4))
+
+	r5 := ToUrlBase64(map[string]interface{}{"name": "duke", "quantity": 1})
+	d5, _ := base64.URLEncoding.DecodeString(r5)
+	assert.Equal("{\"name\":\"duke\",\"quantity\":1}", string(d5))
+
+	r6 := ToUrlBase64([]int64{7, 5, 9, 4, 23})
+	d6, _ := base64.URLEncoding.DecodeString(r6)
+	assert.Equal("[7,5,9,4,23]", string(d6))
+
+	r7 := ToUrlBase64([]string{"7", "5", "9", "4", "23"})
+	d7, _ := base64.URLEncoding.DecodeString(r7)
+	assert.Equal("[\"7\",\"5\",\"9\",\"4\",\"23\"]", string(d7))
+
+	r8 := ToUrlBase64(nil)
+	d8, _ := base64.URLEncoding.DecodeString(r8)
+	assert.Equal("", string(d8))
+
+	ch := make(chan int, 3)
+	ch <- 1
+	ch <- 2
+	r9 := ToUrlBase64(ch)
+	d9, _ := base64.URLEncoding.DecodeString(r9)
+	assert.Equal("", string(d9))
+
+	r10 := ToUrlBase64(io.EOF)
+	d10, _ := base64.URLEncoding.DecodeString(r10)
+	assert.Equal("EOF", string(d10))
+
+	r11 := ToUrlBase64(errors.New("test"))
+	d11, _ := base64.URLEncoding.DecodeString(r11)
+	assert.Equal("test", string(d11))
+
+	typedNil := (*int)(nil)
+	r12 := ToUrlBase64(typedNil)
+	d12, _ := base64.URLEncoding.DecodeString(r12)
+	assert.Equal("", string(d12))
+
+	type nilInterface interface {
+	}
+	var nI nilInterface = nil
+	d13, _ := base64.URLEncoding.DecodeString(ToUrlBase64(nI))
+	assert.Equal("", string(d13))
+
+	var p unsafe.Pointer
+	d14, _ := base64.URLEncoding.DecodeString(ToUrlBase64(p))
+	assert.Equal("", string(d14))
+
+	r15 := ToUrlBase64("4+3/4?=")
+	d15, _ := base64.URLEncoding.DecodeString(r15)
+	assert.Equal("4+3/4?=", string(d15))
+}
+
+func TestToRawStdBase64(t *testing.T) {
+	t.Parallel()
+	assert := internal.NewAssert(t, "TestToRawStdBase64")
+
+	r1 := ToRawStdBase64("abc")
+	d1, _ := base64.RawStdEncoding.DecodeString(r1)
+	assert.Equal("abc", string(d1))
+
+	r2 := ToRawStdBase64([]byte("abc"))
+	d2, _ := base64.RawStdEncoding.DecodeString(r2)
+	assert.Equal("abc", string(d2))
+
+	r3 := ToRawStdBase64(123)
+	d3, _ := base64.RawStdEncoding.DecodeString(r3)
+	assert.Equal("123", string(d3))
+
+	r4 := ToRawStdBase64(11.11)
+	d4, _ := base64.RawStdEncoding.DecodeString(r4)
+	assert.Equal("11.11", string(d4))
+
+	r5 := ToRawStdBase64(map[string]interface{}{"name": "duke", "quantity": 1})
+	d5, _ := base64.RawStdEncoding.DecodeString(r5)
+	assert.Equal("{\"name\":\"duke\",\"quantity\":1}", string(d5))
+
+	r6 := ToRawStdBase64([]int64{7, 5, 9, 4, 23})
+	d6, _ := base64.RawStdEncoding.DecodeString(r6)
+	assert.Equal("[7,5,9,4,23]", string(d6))
+
+	r7 := ToRawStdBase64([]string{"7", "5", "9", "4", "23"})
+	d7, _ := base64.RawStdEncoding.DecodeString(r7)
+	assert.Equal("[\"7\",\"5\",\"9\",\"4\",\"23\"]", string(d7))
+
+	r8 := ToRawStdBase64(nil)
+	d8, _ := base64.RawStdEncoding.DecodeString(r8)
+	assert.Equal("", string(d8))
+
+	ch := make(chan int, 3)
+	ch <- 1
+	ch <- 2
+	r9 := ToRawStdBase64(ch)
+	d9, _ := base64.RawStdEncoding.DecodeString(r9)
+	assert.Equal("", string(d9))
+
+	r10 := ToRawStdBase64(io.EOF)
+	d10, _ := base64.RawStdEncoding.DecodeString(r10)
+	assert.Equal("EOF", string(d10))
+
+	r11 := ToRawStdBase64(errors.New("test"))
+	d11, _ := base64.RawStdEncoding.DecodeString(r11)
+	assert.Equal("test", string(d11))
+
+	typedNil := (*int)(nil)
+	r12 := ToRawStdBase64(typedNil)
+	d12, _ := base64.RawStdEncoding.DecodeString(r12)
+	assert.Equal("", string(d12))
+
+	type nilInterface interface {
+	}
+	var nI nilInterface = nil
+	d13, _ := base64.RawStdEncoding.DecodeString(ToRawStdBase64(nI))
+	assert.Equal("", string(d13))
+
+	var p unsafe.Pointer
+	d14, _ := base64.RawStdEncoding.DecodeString(ToRawStdBase64(p))
+	assert.Equal("", string(d14))
+}
+
+func TestToRawUrlBase64(t *testing.T) {
+	t.Parallel()
+	assert := internal.NewAssert(t, "TestToRawUrlBase64")
+
+	r1 := ToRawUrlBase64("abc")
+	d1, _ := base64.RawURLEncoding.DecodeString(r1)
+	assert.Equal("abc", string(d1))
+
+	r2 := ToRawUrlBase64([]byte("abc"))
+	d2, _ := base64.RawURLEncoding.DecodeString(r2)
+	assert.Equal("abc", string(d2))
+
+	r3 := ToRawUrlBase64(123)
+	d3, _ := base64.RawURLEncoding.DecodeString(r3)
+	assert.Equal("123", string(d3))
+
+	r4 := ToRawUrlBase64(11.11)
+	d4, _ := base64.RawURLEncoding.DecodeString(r4)
+	assert.Equal("11.11", string(d4))
+
+	r5 := ToRawUrlBase64(map[string]interface{}{"name": "duke", "quantity": 1})
+	d5, _ := base64.RawURLEncoding.DecodeString(r5)
+	assert.Equal("{\"name\":\"duke\",\"quantity\":1}", string(d5))
+
+	r6 := ToRawUrlBase64([]int64{7, 5, 9, 4, 23})
+	d6, _ := base64.RawURLEncoding.DecodeString(r6)
+	assert.Equal("[7,5,9,4,23]", string(d6))
+
+	r7 := ToRawUrlBase64([]string{"7", "5", "9", "4", "23"})
+	d7, _ := base64.RawURLEncoding.DecodeString(r7)
+	assert.Equal("[\"7\",\"5\",\"9\",\"4\",\"23\"]", string(d7))
+
+	r8 := ToRawUrlBase64(nil)
+	d8, _ := base64.RawURLEncoding.DecodeString(r8)
+	assert.Equal("", string(d8))
+
+	ch := make(chan int, 3)
+	ch <- 1
+	ch <- 2
+	r9 := ToRawUrlBase64(ch)
+	d9, _ := base64.RawURLEncoding.DecodeString(r9)
+	assert.Equal("", string(d9))
+
+	r10 := ToRawUrlBase64(io.EOF)
+	d10, _ := base64.RawURLEncoding.DecodeString(r10)
+	assert.Equal("EOF", string(d10))
+
+	r11 := ToRawUrlBase64(errors.New("test"))
+	d11, _ := base64.RawURLEncoding.DecodeString(r11)
+	assert.Equal("test", string(d11))
+
+	typedNil := (*int)(nil)
+	r12 := ToRawUrlBase64(typedNil)
+	d12, _ := base64.RawURLEncoding.DecodeString(r12)
+	assert.Equal("", string(d12))
+
+	type nilInterface interface {
+	}
+	var nI nilInterface = nil
+	d13, _ := base64.RawURLEncoding.DecodeString(ToRawUrlBase64(nI))
+	assert.Equal("", string(d13))
+
+	var p unsafe.Pointer
+	d14, _ := base64.RawURLEncoding.DecodeString(ToRawUrlBase64(p))
+	assert.Equal("", string(d14))
+
+	r15 := ToRawUrlBase64("4+3/4?=")
+	d15, _ := base64.RawURLEncoding.DecodeString(r15)
+	assert.Equal("4+3/4?=", string(d15))
+}
+
+func TestToBigInt(t *testing.T) {
+	t.Parallel()
+	assert := internal.NewAssert(t, "TestToBigInt")
+
+	tests := []struct {
+		name   string
+		input  interface{}
+		want   *big.Int
+		hasErr bool
+	}{
+		{
+			name:  "int",
+			input: 42,
+			want:  big.NewInt(42),
+		},
+		{
+			name:  "int8",
+			input: int8(127),
+			want:  big.NewInt(127),
+		},
+		{
+			name:  "int16",
+			input: int16(32000),
+			want:  big.NewInt(32000),
+		},
+		{
+			name:  "int32",
+			input: int32(123456),
+			want:  big.NewInt(123456),
+		},
+		{
+			name:  "int64",
+			input: int64(987654321),
+			want:  big.NewInt(987654321),
+		},
+		{
+			name:  "uint",
+			input: uint(987654321),
+			want:  big.NewInt(987654321),
+		},
+		{
+			name:  "uint8",
+			input: uint8(255),
+			want:  big.NewInt(255),
+		},
+		{
+			name:  "uint16",
+			input: uint16(65535),
+			want:  big.NewInt(65535),
+		},
+		{
+			name:  "uint32",
+			input: uint32(4294967295),
+			want:  big.NewInt(4294967295),
+		},
+		{
+			name:  "uint64",
+			input: uint64(18446744073709551615),
+			want:  new(big.Int).SetUint64(18446744073709551615),
+		},
+		{
+			name:   "unsupported type",
+			input:  3.14, // Unsupported type
+			hasErr: true,
+		},
+	}
+
+	for _, tt := range tests {
+		t.Run(tt.name, func(t *testing.T) {
+			got, err := ToBigInt(tt.input)
+			if (err != nil) != tt.hasErr {
+				t.Errorf("ToBigInt() error = %v, hasErr %v", err, tt.hasErr)
+				return
+			}
+
+			assert.Equal(tt.want, got)
+		})
+	}
+}

cryptor/aes.go

@@ -1,188 +0,0 @@
-// Copyright 2021 dudaodong@gmail.com. All rights reserved.
-// Use of this source code is governed by MIT license
-
-// Package cryptor implements some util functions to encrypt and decrypt.
-// Note:
-// 1. for aes crypt function, the `key` param length should be 16, 24 or 32. if not, will panic.
-package cryptor
-
-import (
-	"bytes"
-	"crypto/aes"
-	"crypto/cipher"
-	"crypto/rand"
-	"io"
-)
-
-// AesEcbEncrypt encrypt data with key use AES ECB algorithm
-// len(key) should be 16, 24 or 32
-func AesEcbEncrypt(data, key []byte) []byte {
-	size := len(key)
-	if size != 16 && size != 24 && size != 32 {
-		panic("key length shoud be 16 or 24 or 32")
-	}
-
-	cipher, _ := aes.NewCipher(generateAesKey(key, size))
-	length := (len(data) + aes.BlockSize) / aes.BlockSize
-
-	plain := make([]byte, length*aes.BlockSize)
-
-	copy(plain, data)
-
-	pad := byte(len(plain) - len(data))
-	for i := len(data); i < len(plain); i++ {
-		plain[i] = pad
-	}
-
-	encrypted := make([]byte, len(plain))
-	for bs, be := 0, cipher.BlockSize(); bs <= len(data); bs, be = bs+cipher.BlockSize(), be+cipher.BlockSize() {
-		cipher.Encrypt(encrypted[bs:be], plain[bs:be])
-	}
-
-	return encrypted
-}
-
-// AesEcbDecrypt decrypt data with key use AES ECB algorithm
-// len(key) should be 16, 24 or 32
-func AesEcbDecrypt(encrypted, key []byte) []byte {
-	size := len(key)
-	if size != 16 && size != 24 && size != 32 {
-		panic("key length shoud be 16 or 24 or 32")
-	}
-
-	cipher, _ := aes.NewCipher(generateAesKey(key, size))
-	decrypted := make([]byte, len(encrypted))
-
-	for bs, be := 0, cipher.BlockSize(); bs < len(encrypted); bs, be = bs+cipher.BlockSize(), be+cipher.BlockSize() {
-		cipher.Decrypt(decrypted[bs:be], encrypted[bs:be])
-	}
-
-	trim := 0
-	if len(decrypted) > 0 {
-		trim = len(decrypted) - int(decrypted[len(decrypted)-1])
-	}
-
-	return decrypted[:trim]
-}
-
-// AesCbcEncrypt encrypt data with key use AES CBC algorithm
-// len(key) should be 16, 24 or 32
-func AesCbcEncrypt(data, key []byte) []byte {
-	block, _ := aes.NewCipher(key)
-	data = pkcs7Padding(data, block.BlockSize())
-
-	encrypted := make([]byte, aes.BlockSize+len(data))
-	iv := encrypted[:aes.BlockSize]
-	if _, err := io.ReadFull(rand.Reader, iv); err != nil {
-		panic(err)
-	}
-
-	mode := cipher.NewCBCEncrypter(block, iv)
-	mode.CryptBlocks(encrypted[aes.BlockSize:], data)
-
-	return encrypted
-}
-
-// AesCbcDecrypt decrypt data with key use AES CBC algorithm
-// len(key) should be 16, 24 or 32
-func AesCbcDecrypt(encrypted, key []byte) []byte {
-	block, _ := aes.NewCipher(key)
-
-	iv := encrypted[:aes.BlockSize]
-	encrypted = encrypted[aes.BlockSize:]
-
-	mode := cipher.NewCBCDecrypter(block, iv)
-	mode.CryptBlocks(encrypted, encrypted)
-
-	decrypted := pkcs7UnPadding(encrypted)
-	return decrypted
-}
-
-// AesCtrCrypt encrypt data with key use AES CTR algorithm
-// len(key) should be 16, 24 or 32
-func AesCtrCrypt(data, key []byte) []byte {
-	block, _ := aes.NewCipher(key)
-
-	iv := bytes.Repeat([]byte("1"), block.BlockSize())
-	stream := cipher.NewCTR(block, iv)
-
-	dst := make([]byte, len(data))
-	stream.XORKeyStream(dst, data)
-
-	return dst
-}
-
-// AesCfbEncrypt encrypt data with key use AES CFB algorithm
-// len(key) should be 16, 24 or 32
-func AesCfbEncrypt(data, key []byte) []byte {
-	block, err := aes.NewCipher(key)
-	if err != nil {
-		panic(err)
-	}
-
-	encrypted := make([]byte, aes.BlockSize+len(data))
-	iv := encrypted[:aes.BlockSize]
-	if _, err := io.ReadFull(rand.Reader, iv); err != nil {
-		panic(err)
-	}
-
-	stream := cipher.NewCFBEncrypter(block, iv)
-	stream.XORKeyStream(encrypted[aes.BlockSize:], data)
-	return encrypted
-}
-
-// AesCfbDecrypt decrypt data with key use AES CFB algorithm
-// len(encrypted) should be great than 16, len(key) should be 16, 24 or 32
-func AesCfbDecrypt(encrypted, key []byte) []byte {
-	block, _ := aes.NewCipher(key)
-	if len(encrypted) < aes.BlockSize {
-		panic("encrypted data is too short")
-	}
-	iv := encrypted[:aes.BlockSize]
-	encrypted = encrypted[aes.BlockSize:]
-
-	stream := cipher.NewCFBDecrypter(block, iv)
-	stream.XORKeyStream(encrypted, encrypted)
-	return encrypted
-}
-
-// AesOfbEncrypt encrypt data with key use AES OFB algorithm
-// len(key) should be 16, 24 or 32
-func AesOfbEncrypt(data, key []byte) []byte {
-	block, err := aes.NewCipher(key)
-	if err != nil {
-		panic(err)
-	}
-	data = pkcs7Padding(data, aes.BlockSize)
-	encrypted := make([]byte, aes.BlockSize+len(data))
-	iv := encrypted[:aes.BlockSize]
-	if _, err := io.ReadFull(rand.Reader, iv); err != nil {
-		panic(err)
-	}
-
-	stream := cipher.NewOFB(block, iv)
-	stream.XORKeyStream(encrypted[aes.BlockSize:], data)
-	return encrypted
-}
-
-// AesOfbDecrypt decrypt data with key use AES OFB algorithm
-// len(key) should be 16, 24 or 32
-func AesOfbDecrypt(data, key []byte) []byte {
-	block, err := aes.NewCipher(key)
-	if err != nil {
-		panic(err)
-	}
-
-	iv := data[:aes.BlockSize]
-	data = data[aes.BlockSize:]
-	if len(data)%aes.BlockSize != 0 {
-		return nil
-	}
-
-	decrypted := make([]byte, len(data))
-	mode := cipher.NewOFB(block, iv)
-	mode.XORKeyStream(decrypted, data)
-
-	decrypted = pkcs7UnPadding(decrypted)
-	return decrypted
-}

cryptor/aes_test.go

@@ -1,62 +0,0 @@
-package cryptor
-
-import (
-	"testing"
-
-	"github.com/duke-git/lancet/internal"
-)
-
-func TestAesEcbEncrypt(t *testing.T) {
-	data := "hello world"
-	key := "abcdefghijklmnop"
-
-	aesEcbEncrypt := AesEcbEncrypt([]byte(data), []byte(key))
-	aesEcbDecrypt := AesEcbDecrypt(aesEcbEncrypt, []byte(key))
-
-	assert := internal.NewAssert(t, "TestAesEcbEncrypt")
-	assert.Equal(data, string(aesEcbDecrypt))
-}
-
-func TestAesCbcEncrypt(t *testing.T) {
-	data := "hello world"
-	key := "abcdefghijklmnop"
-
-	aesCbcEncrypt := AesCbcEncrypt([]byte(data), []byte(key))
-	aesCbcDecrypt := AesCbcDecrypt(aesCbcEncrypt, []byte(key))
-
-	assert := internal.NewAssert(t, "TestAesCbcEncrypt")
-	assert.Equal(data, string(aesCbcDecrypt))
-}
-
-func TestAesCtrCrypt(t *testing.T) {
-	data := "hello world"
-	key := "abcdefghijklmnop"
-
-	aesCtrCrypt := AesCtrCrypt([]byte(data), []byte(key))
-	aesCtrDeCrypt := AesCtrCrypt(aesCtrCrypt, []byte(key))
-
-	assert := internal.NewAssert(t, "TestAesCtrCrypt")
-	assert.Equal(data, string(aesCtrDeCrypt))
-}
-
-func TestAesCfbEncrypt(t *testing.T) {
-	data := "hello world"
-	key := "abcdefghijklmnop"
-
-	aesCfbEncrypt := AesCfbEncrypt([]byte(data), []byte(key))
-	aesCfbDecrypt := AesCfbDecrypt(aesCfbEncrypt, []byte(key))
-
-	assert := internal.NewAssert(t, "TestAesCfbEncrypt")
-	assert.Equal(data, string(aesCfbDecrypt))
-}
-
-func TestAesOfbEncrypt(t *testing.T) {
-	data := "hello world"
-	key := "abcdefghijklmnop"
-
-	aesOfbEncrypt := AesOfbEncrypt([]byte(data), []byte(key))
-	aesOfbDecrypt := AesOfbDecrypt(aesOfbEncrypt, []byte(key))
-
-	assert := internal.NewAssert(t, "TestAesOfbEncrypt")
-	assert.Equal(data, string(aesOfbDecrypt))
-}

cryptor/basic.go

@@ -37,6 +37,27 @@ func Md5String(s string) string {
 	return hex.EncodeToString(h.Sum(nil))
 }
 
+// Md5StringWithBase64 return the md5 value of string with base64.
+func Md5StringWithBase64(s string) string {
+	h := md5.New()
+	h.Write([]byte(s))
+	return base64.StdEncoding.EncodeToString(h.Sum(nil))
+}
+
+// Md5Byte return the md5 string of byte slice.
+func Md5Byte(data []byte) string {
+	h := md5.New()
+	h.Write(data)
+	return hex.EncodeToString(h.Sum(nil))
+}
+
+// Md5ByteWithBase64 return the md5 string of byte slice with base64.
+func Md5ByteWithBase64(data []byte) string {
+	h := md5.New()
+	h.Write(data)
+	return base64.StdEncoding.EncodeToString(h.Sum(nil))
+}
+
 // Md5File return the md5 value of file
 func Md5File(filename string) (string, error) {
 	if fileInfo, err := os.Stat(filename); err != nil {
@@ -76,6 +97,13 @@ func HmacMd5(data, key string) string {
 	return hex.EncodeToString(h.Sum([]byte("")))
 }
 
+// HmacMd5WithBase64 return the hmac hash of string use md5 with base64.
+func HmacMd5WithBase64(data, key string) string {
+	h := hmac.New(md5.New, []byte(key))
+	h.Write([]byte(data))
+	return base64.StdEncoding.EncodeToString(h.Sum([]byte("")))
+}
+
 // HmacSha1 return the hmac hash of string use sha1
 func HmacSha1(data, key string) string {
 	h := hmac.New(sha1.New, []byte(key))
@@ -83,6 +111,13 @@ func HmacSha1(data, key string) string {
 	return hex.EncodeToString(h.Sum([]byte("")))
 }
 
+// HmacSha1WithBase64 return the hmac hash of string use sha1 with base64.
+func HmacSha1WithBase64(str, key string) string {
+	h := hmac.New(sha1.New, []byte(key))
+	h.Write([]byte(str))
+	return base64.StdEncoding.EncodeToString(h.Sum([]byte("")))
+}
+
 // HmacSha256 return the hmac hash of string use sha256
 func HmacSha256(data, key string) string {
 	h := hmac.New(sha256.New, []byte(key))
@@ -90,6 +125,13 @@ func HmacSha256(data, key string) string {
 	return hex.EncodeToString(h.Sum([]byte("")))
 }
 
+// HmacSha256WithBase64 return the hmac hash of string use sha256 with base64.
+func HmacSha256WithBase64(str, key string) string {
+	h := hmac.New(sha256.New, []byte(key))
+	h.Write([]byte(str))
+	return base64.StdEncoding.EncodeToString(h.Sum([]byte("")))
+}
+
 // HmacSha512 return the hmac hash of string use sha512
 func HmacSha512(data, key string) string {
 	h := hmac.New(sha512.New, []byte(key))
@@ -97,6 +139,13 @@ func HmacSha512(data, key string) string {
 	return hex.EncodeToString(h.Sum([]byte("")))
 }
 
+// HmacSha512WithBase64 return the hmac hash of string use sha512 with base64.
+func HmacSha512WithBase64(str, key string) string {
+	h := hmac.New(sha512.New, []byte(key))
+	h.Write([]byte(str))
+	return base64.StdEncoding.EncodeToString(h.Sum([]byte("")))
+}
+
 // Sha1 return the sha1 value (SHA-1 hash algorithm) of string
 func Sha1(data string) string {
 	sha1 := sha1.New()
@@ -104,6 +153,13 @@ func Sha1(data string) string {
 	return hex.EncodeToString(sha1.Sum([]byte("")))
 }
 
+// Sha1WithBase64 return the sha1 value (SHA-1 hash algorithm) of base64 string.
+func Sha1WithBase64(str string) string {
+	sha1 := sha1.New()
+	sha1.Write([]byte(str))
+	return base64.StdEncoding.EncodeToString(sha1.Sum([]byte("")))
+}
+
 // Sha256 return the sha256 value (SHA256 hash algorithm) of string
 func Sha256(data string) string {
 	sha256 := sha256.New()
@@ -111,9 +167,23 @@ func Sha256(data string) string {
 	return hex.EncodeToString(sha256.Sum([]byte("")))
 }
 
+// Sha256WithBase64 return the sha256 value (SHA256 hash algorithm) of base64 string.
+func Sha256WithBase64(str string) string {
+	sha256 := sha256.New()
+	sha256.Write([]byte(str))
+	return base64.StdEncoding.EncodeToString(sha256.Sum([]byte("")))
+}
+
 // Sha512 return the sha512 value (SHA512 hash algorithm) of string
 func Sha512(data string) string {
 	sha512 := sha512.New()
 	sha512.Write([]byte(data))
 	return hex.EncodeToString(sha512.Sum([]byte("")))
 }
+
+// Sha512WithBase64 return the sha512 value (SHA512 hash algorithm) of base64 string.
+func Sha512WithBase64(str string) string {
+	sha512 := sha512.New()
+	sha512.Write([]byte(str))
+	return base64.StdEncoding.EncodeToString(sha512.Sum([]byte("")))
+}

cryptor/basic_test.go

@@ -21,6 +21,22 @@ func TestMd5String(t *testing.T) {
 	assert.Equal("5d41402abc4b2a76b9719d911017c592", Md5String("hello"))
 }
 
+func TestMd5StringWithBase64(t *testing.T) {
+	assert := internal.NewAssert(t, "TestMd5StringWithBase64")
+	assert.Equal("XUFAKrxLKna5cZ2REBfFkg==", Md5StringWithBase64("hello"))
+}
+
+func TestMd5Byte(t *testing.T) {
+	assert := internal.NewAssert(t, "TestMd5Byte")
+	data := []byte{'a'}
+	assert.Equal("0cc175b9c0f1b6a831c399e269772661", Md5Byte(data))
+}
+
+func TestMd5ByteWithBase64(t *testing.T) {
+	assert := internal.NewAssert(t, "TestMd5ByteWithBase64")
+	assert.Equal("XUFAKrxLKna5cZ2REBfFkg==", Md5ByteWithBase64([]byte("hello")))
+}
+
 func TestMd5File(t *testing.T) {
 	fileMd5, err := Md5File("./basic.go")
 	assert := internal.NewAssert(t, "TestMd5File")
@@ -33,6 +49,11 @@ func TestHmacMd5(t *testing.T) {
 	assert.Equal("5f4c9faaff0a1ad3007d9ddc06abe36d", HmacMd5("hello world", "12345"))
 }
 
+func TestHmacMd5WithBase64(t *testing.T) {
+	assert := internal.NewAssert(t, "TestHmacMd5WithBase64")
+	assert.Equal("6DQwbquJLYclJdSRinpjmg==", HmacMd5WithBase64("hello", "12345"))
+}
+
 func TestHmacSha1(t *testing.T) {
 	s := "hello world"
 	key := "12345"
@@ -43,6 +64,16 @@ func TestHmacSha1(t *testing.T) {
 	assert.Equal(expected, hmacSha1)
 }
 
+func TestHmacSha1WithBase64(t *testing.T) {
+	s := "hello"
+	key := "12345"
+	hmacSha1 := HmacSha1WithBase64(s, key)
+	expected := "XGqdsMzLkuNu0DI/0Jt/k23prOA="
+
+	assert := internal.NewAssert(t, "TestHmacSha1")
+	assert.Equal(expected, hmacSha1)
+}
+
 func TestHmacSha256(t *testing.T) {
 	s := "hello world"
 	key := "12345"
@@ -53,6 +84,16 @@ func TestHmacSha256(t *testing.T) {
 	assert.Equal(expected, hmacSha256)
 }
 
+func TestHmacSha256WithBase64(t *testing.T) {
+	str := "hello"
+	key := "12345"
+	hms := HmacSha256WithBase64(str, key)
+	expected := "MVu5PE6YmGK6Ccti4F1zpfN2yzbw14btqwwyDQWf3nU="
+
+	assert := internal.NewAssert(t, "TestHmacSha256WithBase64")
+	assert.Equal(expected, hms)
+}
+
 func TestHmacSha512(t *testing.T) {
 	s := "hello world"
 	key := "12345"
@@ -63,6 +104,16 @@ func TestHmacSha512(t *testing.T) {
 	assert.Equal(expected, hmacSha512)
 }
 
+func TestHmacSha512WithBase64(t *testing.T) {
+	str := "hello"
+	key := "12345"
+	hms := HmacSha512WithBase64(str, key)
+	expected := "3Y8SkKndI9NU4lJtmi6c6M///dN8syCADRxsE9Lvw2Mog3ahlsVFja9T+OGqa0Wm2FYwPVwKIGS/+XhYYdSM/A=="
+
+	assert := internal.NewAssert(t, "TestHmacSha512WithBase64")
+	assert.Equal(expected, hms)
+}
+
 func TestSha1(t *testing.T) {
 	s := "hello world"
 	sha1 := Sha1(s)
@@ -72,6 +123,14 @@ func TestSha1(t *testing.T) {
 	assert.Equal(expected, sha1)
 }
 
+func TestSha1WithBase64(t *testing.T) {
+	str := Sha1WithBase64("hello")
+	expected := "qvTGHdzF6KLavt4PO0gs2a6pQ00="
+
+	assert := internal.NewAssert(t, "TestSha1WithBase64")
+	assert.Equal(expected, str)
+}
+
 func TestSha256(t *testing.T) {
 	s := "hello world"
 	sha256 := Sha256(s)
@@ -81,6 +140,14 @@ func TestSha256(t *testing.T) {
 	assert.Equal(expected, sha256)
 }
 
+func TestSha256WithBase64(t *testing.T) {
+	str := Sha256WithBase64("hello")
+	expected := "LPJNul+wow4m6DsqxbninhsWHlwfp0JecwQzYpOLmCQ="
+
+	assert := internal.NewAssert(t, "TestSha256WithBase64")
+	assert.Equal(expected, str)
+}
+
 func TestSha512(t *testing.T) {
 	s := "hello world"
 	sha512 := Sha512(s)
@@ -89,3 +156,11 @@ func TestSha512(t *testing.T) {
 	assert := internal.NewAssert(t, "TestSha512")
 	assert.Equal(expected, sha512)
 }
+
+func TestSha512WithBase64(t *testing.T) {
+	str := Sha512WithBase64("hello")
+	expected := "m3HSJL1i83hdltRq0+o9czGb+8KJDKra4t/3JRlnPKcjI8PZm6XBHXx6zG4UuMXaDEZjR1wuXDre9G9zvN7AQw=="
+
+	assert := internal.NewAssert(t, "TestSha512WithBase64")
+	assert.Equal(expected, str)
+}

cryptor/crypto.go

@@ -0,0 +1,490 @@
+// Copyright 2021 dudaodong@gmail.com. All rights reserved.
+// Use of this source code is governed by MIT license
+
+// Package cryptor implements some util functions to encrypt and decrypt.
+// Note:
+// 1. for aes crypt function, the `key` param length should be 16, 24 or 32. if not, will panic.
+package cryptor
+
+import (
+	"bytes"
+	"crypto/aes"
+	"crypto/cipher"
+	"crypto/des"
+	"crypto/rand"
+	"crypto/rsa"
+	"crypto/sha256"
+	"crypto/x509"
+	"encoding/pem"
+	"io"
+	"os"
+)
+
+// AesEcbEncrypt encrypt data with key use AES ECB algorithm
+// len(key) should be 16, 24 or 32
+func AesEcbEncrypt(data, key []byte) []byte {
+	size := len(key)
+	if size != 16 && size != 24 && size != 32 {
+		panic("key length shoud be 16 or 24 or 32")
+	}
+
+	cipher, _ := aes.NewCipher(generateAesKey(key, size))
+	length := (len(data) + aes.BlockSize) / aes.BlockSize
+
+	plain := make([]byte, length*aes.BlockSize)
+
+	copy(plain, data)
+
+	pad := byte(len(plain) - len(data))
+	for i := len(data); i < len(plain); i++ {
+		plain[i] = pad
+	}
+
+	encrypted := make([]byte, len(plain))
+	for bs, be := 0, cipher.BlockSize(); bs <= len(data); bs, be = bs+cipher.BlockSize(), be+cipher.BlockSize() {
+		cipher.Encrypt(encrypted[bs:be], plain[bs:be])
+	}
+
+	return encrypted
+}
+
+// AesEcbDecrypt decrypt data with key use AES ECB algorithm
+// len(key) should be 16, 24 or 32
+func AesEcbDecrypt(encrypted, key []byte) []byte {
+	size := len(key)
+	if size != 16 && size != 24 && size != 32 {
+		panic("key length shoud be 16 or 24 or 32")
+	}
+
+	cipher, _ := aes.NewCipher(generateAesKey(key, size))
+	decrypted := make([]byte, len(encrypted))
+
+	for bs, be := 0, cipher.BlockSize(); bs < len(encrypted); bs, be = bs+cipher.BlockSize(), be+cipher.BlockSize() {
+		cipher.Decrypt(decrypted[bs:be], encrypted[bs:be])
+	}
+
+	trim := 0
+	if len(decrypted) > 0 {
+		trim = len(decrypted) - int(decrypted[len(decrypted)-1])
+	}
+
+	return decrypted[:trim]
+}
+
+// AesCbcEncrypt encrypt data with key use AES CBC algorithm
+// len(key) should be 16, 24 or 32
+func AesCbcEncrypt(data, key []byte) []byte {
+	block, _ := aes.NewCipher(key)
+	data = pkcs7Padding(data, block.BlockSize())
+
+	encrypted := make([]byte, aes.BlockSize+len(data))
+	iv := encrypted[:aes.BlockSize]
+	if _, err := io.ReadFull(rand.Reader, iv); err != nil {
+		panic(err)
+	}
+
+	mode := cipher.NewCBCEncrypter(block, iv)
+	mode.CryptBlocks(encrypted[aes.BlockSize:], data)
+
+	return encrypted
+}
+
+// AesCbcDecrypt decrypt data with key use AES CBC algorithm
+// len(key) should be 16, 24 or 32
+func AesCbcDecrypt(encrypted, key []byte) []byte {
+	block, _ := aes.NewCipher(key)
+
+	iv := encrypted[:aes.BlockSize]
+	encrypted = encrypted[aes.BlockSize:]
+
+	mode := cipher.NewCBCDecrypter(block, iv)
+	mode.CryptBlocks(encrypted, encrypted)
+
+	decrypted := pkcs7UnPadding(encrypted)
+	return decrypted
+}
+
+// AesCtrCrypt encrypt data with key use AES CTR algorithm
+// len(key) should be 16, 24 or 32
+func AesCtrCrypt(data, key []byte) []byte {
+	block, _ := aes.NewCipher(key)
+
+	iv := bytes.Repeat([]byte("1"), block.BlockSize())
+	stream := cipher.NewCTR(block, iv)
+
+	dst := make([]byte, len(data))
+	stream.XORKeyStream(dst, data)
+
+	return dst
+}
+
+// AesCfbEncrypt encrypt data with key use AES CFB algorithm
+// len(key) should be 16, 24 or 32
+func AesCfbEncrypt(data, key []byte) []byte {
+	block, err := aes.NewCipher(key)
+	if err != nil {
+		panic(err)
+	}
+
+	encrypted := make([]byte, aes.BlockSize+len(data))
+	iv := encrypted[:aes.BlockSize]
+	if _, err := io.ReadFull(rand.Reader, iv); err != nil {
+		panic(err)
+	}
+
+	stream := cipher.NewCFBEncrypter(block, iv)
+	stream.XORKeyStream(encrypted[aes.BlockSize:], data)
+	return encrypted
+}
+
+// AesCfbDecrypt decrypt data with key use AES CFB algorithm
+// len(encrypted) should be great than 16, len(key) should be 16, 24 or 32
+func AesCfbDecrypt(encrypted, key []byte) []byte {
+	block, _ := aes.NewCipher(key)
+	if len(encrypted) < aes.BlockSize {
+		panic("encrypted data is too short")
+	}
+	iv := encrypted[:aes.BlockSize]
+	encrypted = encrypted[aes.BlockSize:]
+
+	stream := cipher.NewCFBDecrypter(block, iv)
+	stream.XORKeyStream(encrypted, encrypted)
+	return encrypted
+}
+
+// AesOfbEncrypt encrypt data with key use AES OFB algorithm
+// len(key) should be 16, 24 or 32
+func AesOfbEncrypt(data, key []byte) []byte {
+	block, err := aes.NewCipher(key)
+	if err != nil {
+		panic(err)
+	}
+	data = pkcs7Padding(data, aes.BlockSize)
+	encrypted := make([]byte, aes.BlockSize+len(data))
+	iv := encrypted[:aes.BlockSize]
+	if _, err := io.ReadFull(rand.Reader, iv); err != nil {
+		panic(err)
+	}
+
+	stream := cipher.NewOFB(block, iv)
+	stream.XORKeyStream(encrypted[aes.BlockSize:], data)
+	return encrypted
+}
+
+// AesOfbDecrypt decrypt data with key use AES OFB algorithm
+// len(key) should be 16, 24 or 32
+func AesOfbDecrypt(data, key []byte) []byte {
+	block, err := aes.NewCipher(key)
+	if err != nil {
+		panic(err)
+	}
+
+	iv := data[:aes.BlockSize]
+	data = data[aes.BlockSize:]
+	if len(data)%aes.BlockSize != 0 {
+		return nil
+	}
+
+	decrypted := make([]byte, len(data))
+	mode := cipher.NewOFB(block, iv)
+	mode.XORKeyStream(decrypted, data)
+
+	decrypted = pkcs7UnPadding(decrypted)
+	return decrypted
+}
+
+// DesEcbEncrypt encrypt data with key use DES ECB algorithm
+// len(key) should be 8
+func DesEcbEncrypt(data, key []byte) []byte {
+	cipher, _ := des.NewCipher(generateDesKey(key))
+	length := (len(data) + des.BlockSize) / des.BlockSize
+	plain := make([]byte, length*des.BlockSize)
+	copy(plain, data)
+
+	pad := byte(len(plain) - len(data))
+	for i := len(data); i < len(plain); i++ {
+		plain[i] = pad
+	}
+
+	encrypted := make([]byte, len(plain))
+	for bs, be := 0, cipher.BlockSize(); bs <= len(data); bs, be = bs+cipher.BlockSize(), be+cipher.BlockSize() {
+		cipher.Encrypt(encrypted[bs:be], plain[bs:be])
+	}
+
+	return encrypted
+}
+
+// DesEcbDecrypt decrypt data with key use DES ECB algorithm
+// len(key) should be 8
+func DesEcbDecrypt(encrypted, key []byte) []byte {
+	cipher, _ := des.NewCipher(generateDesKey(key))
+	decrypted := make([]byte, len(encrypted))
+
+	for bs, be := 0, cipher.BlockSize(); bs < len(encrypted); bs, be = bs+cipher.BlockSize(), be+cipher.BlockSize() {
+		cipher.Decrypt(decrypted[bs:be], encrypted[bs:be])
+	}
+
+	trim := 0
+	if len(decrypted) > 0 {
+		trim = len(decrypted) - int(decrypted[len(decrypted)-1])
+	}
+
+	return decrypted[:trim]
+}
+
+// DesCbcEncrypt encrypt data with key use DES CBC algorithm
+// len(key) should be 8
+func DesCbcEncrypt(data, key []byte) []byte {
+	block, _ := des.NewCipher(key)
+	data = pkcs7Padding(data, block.BlockSize())
+
+	encrypted := make([]byte, des.BlockSize+len(data))
+	iv := encrypted[:des.BlockSize]
+	if _, err := io.ReadFull(rand.Reader, iv); err != nil {
+		panic(err)
+	}
+
+	mode := cipher.NewCBCEncrypter(block, iv)
+	mode.CryptBlocks(encrypted[des.BlockSize:], data)
+
+	return encrypted
+}
+
+// DesCbcDecrypt decrypt data with key use DES CBC algorithm
+// len(key) should be 8
+func DesCbcDecrypt(encrypted, key []byte) []byte {
+	block, _ := des.NewCipher(key)
+
+	iv := encrypted[:des.BlockSize]
+	encrypted = encrypted[des.BlockSize:]
+
+	mode := cipher.NewCBCDecrypter(block, iv)
+	mode.CryptBlocks(encrypted, encrypted)
+
+	decrypted := pkcs7UnPadding(encrypted)
+	return decrypted
+}
+
+// DesCtrCrypt encrypt data with key use DES CTR algorithm
+// len(key) should be 8
+func DesCtrCrypt(data, key []byte) []byte {
+	block, _ := des.NewCipher(key)
+
+	iv := bytes.Repeat([]byte("1"), block.BlockSize())
+	stream := cipher.NewCTR(block, iv)
+
+	dst := make([]byte, len(data))
+	stream.XORKeyStream(dst, data)
+
+	return dst
+}
+
+// DesCfbEncrypt encrypt data with key use DES CFB algorithm
+// len(key) should be 8
+func DesCfbEncrypt(data, key []byte) []byte {
+	block, err := des.NewCipher(key)
+	if err != nil {
+		panic(err)
+	}
+
+	encrypted := make([]byte, des.BlockSize+len(data))
+	iv := encrypted[:des.BlockSize]
+	if _, err := io.ReadFull(rand.Reader, iv); err != nil {
+		panic(err)
+	}
+
+	stream := cipher.NewCFBEncrypter(block, iv)
+	stream.XORKeyStream(encrypted[des.BlockSize:], data)
+
+	return encrypted
+}
+
+// DesCfbDecrypt decrypt data with key use DES CFB algorithm
+// len(encrypted) should be great than 16, len(key) should be 8
+func DesCfbDecrypt(encrypted, key []byte) []byte {
+	block, _ := des.NewCipher(key)
+	if len(encrypted) < des.BlockSize {
+		panic("encrypted data is too short")
+	}
+	iv := encrypted[:des.BlockSize]
+	encrypted = encrypted[des.BlockSize:]
+
+	stream := cipher.NewCFBDecrypter(block, iv)
+	stream.XORKeyStream(encrypted, encrypted)
+
+	return encrypted
+}
+
+// DesOfbEncrypt encrypt data with key use DES OFB algorithm
+// len(key) should be 16, 24 or 32
+func DesOfbEncrypt(data, key []byte) []byte {
+	block, err := des.NewCipher(key)
+	if err != nil {
+		panic(err)
+	}
+	data = pkcs7Padding(data, des.BlockSize)
+	encrypted := make([]byte, des.BlockSize+len(data))
+	iv := encrypted[:des.BlockSize]
+	if _, err := io.ReadFull(rand.Reader, iv); err != nil {
+		panic(err)
+	}
+
+	stream := cipher.NewOFB(block, iv)
+	stream.XORKeyStream(encrypted[des.BlockSize:], data)
+
+	return encrypted
+}
+
+// DesOfbDecrypt decrypt data with key use DES OFB algorithm
+// len(key) should be 8
+func DesOfbDecrypt(data, key []byte) []byte {
+	block, err := des.NewCipher(key)
+	if err != nil {
+		panic(err)
+	}
+
+	iv := data[:des.BlockSize]
+	data = data[des.BlockSize:]
+	if len(data)%des.BlockSize != 0 {
+		return nil
+	}
+
+	decrypted := make([]byte, len(data))
+	mode := cipher.NewOFB(block, iv)
+	mode.XORKeyStream(decrypted, data)
+
+	decrypted = pkcs7UnPadding(decrypted)
+
+	return decrypted
+}
+
+// GenerateRsaKey make  a rsa private key, and return key file name
+// Generated key file is `rsa_private.pem` and `rsa_public.pem` in current path
+func GenerateRsaKey(keySize int, priKeyFile, pubKeyFile string) error {
+	// private key
+	privateKey, err := rsa.GenerateKey(rand.Reader, keySize)
+	if err != nil {
+		return err
+	}
+
+	derText := x509.MarshalPKCS1PrivateKey(privateKey)
+
+	block := pem.Block{
+		Type:  "rsa private key",
+		Bytes: derText,
+	}
+
+	//file,err := os.Create("rsa_private.pem")
+	file, err := os.Create(priKeyFile)
+	if err != nil {
+		panic(err)
+	}
+	pem.Encode(file, &block)
+	file.Close()
+
+	// public key
+	publicKey := privateKey.PublicKey
+
+	derpText, err := x509.MarshalPKIXPublicKey(&publicKey)
+	if err != nil {
+		return err
+	}
+
+	block = pem.Block{
+		Type:  "rsa public key",
+		Bytes: derpText,
+	}
+
+	//file,err = os.Create("rsa_public.pem")
+	file, err = os.Create(pubKeyFile)
+	if err != nil {
+		return err
+	}
+	pem.Encode(file, &block)
+	file.Close()
+
+	return nil
+}
+
+// RsaEncrypt encrypt data with ras algorithm
+func RsaEncrypt(data []byte, pubKeyFileName string) []byte {
+	file, err := os.Open(pubKeyFileName)
+	if err != nil {
+		panic(err)
+	}
+	fileInfo, err := file.Stat()
+	if err != nil {
+		panic(err)
+	}
+	defer file.Close()
+	buf := make([]byte, fileInfo.Size())
+	file.Read(buf)
+
+	block, _ := pem.Decode(buf)
+
+	pubInterface, err := x509.ParsePKIXPublicKey(block.Bytes)
+	if err != nil {
+		panic(err)
+	}
+	pubKey := pubInterface.(*rsa.PublicKey)
+
+	cipherText, err := rsa.EncryptPKCS1v15(rand.Reader, pubKey, data)
+	if err != nil {
+		panic(err)
+	}
+	return cipherText
+}
+
+// RsaDecrypt decrypt data with ras algorithm
+func RsaDecrypt(data []byte, privateKeyFileName string) []byte {
+	file, err := os.Open(privateKeyFileName)
+	if err != nil {
+		panic(err)
+	}
+	fileInfo, err := file.Stat()
+	if err != nil {
+		panic(err)
+	}
+	buf := make([]byte, fileInfo.Size())
+	defer file.Close()
+	file.Read(buf)
+
+	block, _ := pem.Decode(buf)
+
+	priKey, err := x509.ParsePKCS1PrivateKey(block.Bytes)
+	if err != nil {
+		panic(err)
+	}
+
+	plainText, err := rsa.DecryptPKCS1v15(rand.Reader, priKey, data)
+	if err != nil {
+		panic(err)
+	}
+	return plainText
+}
+
+// GenerateRsaKeyPair create rsa private and public key.
+func GenerateRsaKeyPair(keySize int) (*rsa.PrivateKey, *rsa.PublicKey) {
+	privateKey, _ := rsa.GenerateKey(rand.Reader, keySize)
+	return privateKey, &privateKey.PublicKey
+}
+
+// RsaEncryptOAEP encrypts the given data with RSA-OAEP.
+func RsaEncryptOAEP(data []byte, label []byte, key rsa.PublicKey) ([]byte, error) {
+	encryptedBytes, err := rsa.EncryptOAEP(sha256.New(), rand.Reader, &key, data, label)
+	if err != nil {
+		return nil, err
+	}
+
+	return encryptedBytes, nil
+}
+
+// RsaDecryptOAEP decrypts the data with RSA-OAEP.
+func RsaDecryptOAEP(ciphertext []byte, label []byte, key rsa.PrivateKey) ([]byte, error) {
+	decryptedBytes, err := rsa.DecryptOAEP(sha256.New(), rand.Reader, &key, ciphertext, label)
+	if err != nil {
+		return nil, err
+	}
+
+	return decryptedBytes, nil
+}

cryptor/crypto_test.go

@@ -0,0 +1,148 @@
+package cryptor
+
+import (
+	"testing"
+
+	"github.com/duke-git/lancet/internal"
+)
+
+func TestAesEcbEncrypt(t *testing.T) {
+	data := "hello world"
+	key := "abcdefghijklmnop"
+
+	aesEcbEncrypt := AesEcbEncrypt([]byte(data), []byte(key))
+	aesEcbDecrypt := AesEcbDecrypt(aesEcbEncrypt, []byte(key))
+
+	assert := internal.NewAssert(t, "TestAesEcbEncrypt")
+	assert.Equal(data, string(aesEcbDecrypt))
+}
+
+func TestAesCbcEncrypt(t *testing.T) {
+	data := "hello world"
+	key := "abcdefghijklmnop"
+
+	aesCbcEncrypt := AesCbcEncrypt([]byte(data), []byte(key))
+	aesCbcDecrypt := AesCbcDecrypt(aesCbcEncrypt, []byte(key))
+
+	assert := internal.NewAssert(t, "TestAesCbcEncrypt")
+	assert.Equal(data, string(aesCbcDecrypt))
+}
+
+func TestAesCtrCrypt(t *testing.T) {
+	data := "hello world"
+	key := "abcdefghijklmnop"
+
+	aesCtrCrypt := AesCtrCrypt([]byte(data), []byte(key))
+	aesCtrDeCrypt := AesCtrCrypt(aesCtrCrypt, []byte(key))
+
+	assert := internal.NewAssert(t, "TestAesCtrCrypt")
+	assert.Equal(data, string(aesCtrDeCrypt))
+}
+
+func TestAesCfbEncrypt(t *testing.T) {
+	data := "hello world"
+	key := "abcdefghijklmnop"
+
+	aesCfbEncrypt := AesCfbEncrypt([]byte(data), []byte(key))
+	aesCfbDecrypt := AesCfbDecrypt(aesCfbEncrypt, []byte(key))
+
+	assert := internal.NewAssert(t, "TestAesCfbEncrypt")
+	assert.Equal(data, string(aesCfbDecrypt))
+}
+
+func TestAesOfbEncrypt(t *testing.T) {
+	data := "hello world"
+	key := "abcdefghijklmnop"
+
+	aesOfbEncrypt := AesOfbEncrypt([]byte(data), []byte(key))
+	aesOfbDecrypt := AesOfbDecrypt(aesOfbEncrypt, []byte(key))
+
+	assert := internal.NewAssert(t, "TestAesOfbEncrypt")
+	assert.Equal(data, string(aesOfbDecrypt))
+}
+
+func TestDesEcbEncrypt(t *testing.T) {
+	data := "hello world"
+	key := "abcdefgh"
+
+	desEcbEncrypt := DesEcbEncrypt([]byte(data), []byte(key))
+	desEcbDecrypt := DesEcbDecrypt(desEcbEncrypt, []byte(key))
+
+	assert := internal.NewAssert(t, "TestDesEcbEncrypt")
+	assert.Equal(data, string(desEcbDecrypt))
+}
+
+func TestDesCbcEncrypt(t *testing.T) {
+	data := "hello world"
+	key := "abcdefgh"
+
+	desCbcEncrypt := DesCbcEncrypt([]byte(data), []byte(key))
+	desCbcDecrypt := DesCbcDecrypt(desCbcEncrypt, []byte(key))
+
+	assert := internal.NewAssert(t, "TestDesCbcEncrypt")
+	assert.Equal(data, string(desCbcDecrypt))
+}
+
+func TestDesCtrCrypt(t *testing.T) {
+	data := "hello world"
+	key := "abcdefgh"
+
+	desCtrCrypt := DesCtrCrypt([]byte(data), []byte(key))
+	desCtrDeCrypt := DesCtrCrypt(desCtrCrypt, []byte(key))
+
+	assert := internal.NewAssert(t, "TestDesCtrCrypt")
+	assert.Equal(data, string(desCtrDeCrypt))
+}
+
+func TestDesCfbEncrypt(t *testing.T) {
+	data := "hello world"
+	key := "abcdefgh"
+
+	desCfbEncrypt := DesCfbEncrypt([]byte(data), []byte(key))
+	desCfbDecrypt := DesCfbDecrypt(desCfbEncrypt, []byte(key))
+
+	assert := internal.NewAssert(t, "TestDesCfbEncrypt")
+	assert.Equal(data, string(desCfbDecrypt))
+}
+
+func TestDesOfbEncrypt(t *testing.T) {
+	data := "hello world"
+	key := "abcdefgh"
+
+	desOfbEncrypt := DesOfbEncrypt([]byte(data), []byte(key))
+	desOfbDecrypt := DesOfbDecrypt(desOfbEncrypt, []byte(key))
+
+	assert := internal.NewAssert(t, "TestDesOfbEncrypt")
+	assert.Equal(data, string(desOfbDecrypt))
+}
+
+func TestRsaEncrypt(t *testing.T) {
+	err := GenerateRsaKey(4096, "rsa_private.pem", "rsa_public.pem")
+	if err != nil {
+		t.FailNow()
+	}
+	data := []byte("hello world")
+	encrypted := RsaEncrypt(data, "rsa_public.pem")
+	decrypted := RsaDecrypt(encrypted, "rsa_private.pem")
+
+	assert := internal.NewAssert(t, "TestRsaEncrypt")
+	assert.Equal(string(data), string(decrypted))
+}
+
+func TestRsaEncryptOAEP(t *testing.T) {
+	assert := internal.NewAssert(t, "TestRsaEncrypt")
+	t.Parallel()
+
+	pri, pub := GenerateRsaKeyPair(1024)
+
+	data := []byte("hello world")
+	label := []byte("123456")
+
+	encrypted, err := RsaEncryptOAEP(data, label, *pub)
+	assert.IsNil(err)
+
+	decrypted, err := RsaDecryptOAEP([]byte(encrypted), label, *pri)
+
+	assert.IsNil(err)
+	assert.Equal("hello world", string(decrypted))
+}

cryptor/des.go

@@ -1,178 +0,0 @@
-// Copyright 2021 dudaodong@gmail.com. All rights reserved.
-// Use of this source code is governed by MIT license
-
-// Package cryptor implements some util functions to encrypt and decrypt.
-package cryptor
-
-import (
-	"bytes"
-	"crypto/cipher"
-	"crypto/des"
-	"crypto/rand"
-	"io"
-)
-
-// DesEcbEncrypt encrypt data with key use DES ECB algorithm
-// len(key) should be 8
-func DesEcbEncrypt(data, key []byte) []byte {
-	cipher, _ := des.NewCipher(generateDesKey(key))
-	length := (len(data) + des.BlockSize) / des.BlockSize
-	plain := make([]byte, length*des.BlockSize)
-	copy(plain, data)
-
-	pad := byte(len(plain) - len(data))
-	for i := len(data); i < len(plain); i++ {
-		plain[i] = pad
-	}
-
-	encrypted := make([]byte, len(plain))
-	for bs, be := 0, cipher.BlockSize(); bs <= len(data); bs, be = bs+cipher.BlockSize(), be+cipher.BlockSize() {
-		cipher.Encrypt(encrypted[bs:be], plain[bs:be])
-	}
-
-	return encrypted
-}
-
-// DesEcbDecrypt decrypt data with key use DES ECB algorithm
-// len(key) should be 8
-func DesEcbDecrypt(encrypted, key []byte) []byte {
-	cipher, _ := des.NewCipher(generateDesKey(key))
-	decrypted := make([]byte, len(encrypted))
-
-	for bs, be := 0, cipher.BlockSize(); bs < len(encrypted); bs, be = bs+cipher.BlockSize(), be+cipher.BlockSize() {
-		cipher.Decrypt(decrypted[bs:be], encrypted[bs:be])
-	}
-
-	trim := 0
-	if len(decrypted) > 0 {
-		trim = len(decrypted) - int(decrypted[len(decrypted)-1])
-	}
-
-	return decrypted[:trim]
-}
-
-// DesCbcEncrypt encrypt data with key use DES CBC algorithm
-// len(key) should be 8
-func DesCbcEncrypt(data, key []byte) []byte {
-	block, _ := des.NewCipher(key)
-	data = pkcs7Padding(data, block.BlockSize())
-
-	encrypted := make([]byte, des.BlockSize+len(data))
-	iv := encrypted[:des.BlockSize]
-	if _, err := io.ReadFull(rand.Reader, iv); err != nil {
-		panic(err)
-	}
-
-	mode := cipher.NewCBCEncrypter(block, iv)
-	mode.CryptBlocks(encrypted[des.BlockSize:], data)
-
-	return encrypted
-}
-
-// DesCbcDecrypt decrypt data with key use DES CBC algorithm
-// len(key) should be 8
-func DesCbcDecrypt(encrypted, key []byte) []byte {
-	block, _ := des.NewCipher(key)
-
-	iv := encrypted[:des.BlockSize]
-	encrypted = encrypted[des.BlockSize:]
-
-	mode := cipher.NewCBCDecrypter(block, iv)
-	mode.CryptBlocks(encrypted, encrypted)
-
-	decrypted := pkcs7UnPadding(encrypted)
-	return decrypted
-}
-
-// DesCtrCrypt encrypt data with key use DES CTR algorithm
-// len(key) should be 8
-func DesCtrCrypt(data, key []byte) []byte {
-	block, _ := des.NewCipher(key)
-
-	iv := bytes.Repeat([]byte("1"), block.BlockSize())
-	stream := cipher.NewCTR(block, iv)
-
-	dst := make([]byte, len(data))
-	stream.XORKeyStream(dst, data)
-
-	return dst
-}
-
-// DesCfbEncrypt encrypt data with key use DES CFB algorithm
-// len(key) should be 8
-func DesCfbEncrypt(data, key []byte) []byte {
-	block, err := des.NewCipher(key)
-	if err != nil {
-		panic(err)
-	}
-
-	encrypted := make([]byte, des.BlockSize+len(data))
-	iv := encrypted[:des.BlockSize]
-	if _, err := io.ReadFull(rand.Reader, iv); err != nil {
-		panic(err)
-	}
-
-	stream := cipher.NewCFBEncrypter(block, iv)
-	stream.XORKeyStream(encrypted[des.BlockSize:], data)
-
-	return encrypted
-}
-
-// DesCfbDecrypt decrypt data with key use DES CFB algorithm
-// len(encrypted) should be great than 16, len(key) should be 8
-func DesCfbDecrypt(encrypted, key []byte) []byte {
-	block, _ := des.NewCipher(key)
-	if len(encrypted) < des.BlockSize {
-		panic("encrypted data is too short")
-	}
-	iv := encrypted[:des.BlockSize]
-	encrypted = encrypted[des.BlockSize:]
-
-	stream := cipher.NewCFBDecrypter(block, iv)
-	stream.XORKeyStream(encrypted, encrypted)
-
-	return encrypted
-}
-
-// DesOfbEncrypt encrypt data with key use DES OFB algorithm
-// len(key) should be 16, 24 or 32
-func DesOfbEncrypt(data, key []byte) []byte {
-	block, err := des.NewCipher(key)
-	if err != nil {
-		panic(err)
-	}
-	data = pkcs7Padding(data, des.BlockSize)
-	encrypted := make([]byte, des.BlockSize+len(data))
-	iv := encrypted[:des.BlockSize]
-	if _, err := io.ReadFull(rand.Reader, iv); err != nil {
-		panic(err)
-	}
-
-	stream := cipher.NewOFB(block, iv)
-	stream.XORKeyStream(encrypted[des.BlockSize:], data)
-
-	return encrypted
-}
-
-// DesOfbDecrypt decrypt data with key use DES OFB algorithm
-// len(key) should be 8
-func DesOfbDecrypt(data, key []byte) []byte {
-	block, err := des.NewCipher(key)
-	if err != nil {
-		panic(err)
-	}
-
-	iv := data[:des.BlockSize]
-	data = data[des.BlockSize:]
-	if len(data)%des.BlockSize != 0 {
-		return nil
-	}
-
-	decrypted := make([]byte, len(data))
-	mode := cipher.NewOFB(block, iv)
-	mode.XORKeyStream(decrypted, data)
-
-	decrypted = pkcs7UnPadding(decrypted)
-
-	return decrypted
-}

cryptor/des_test.go

@@ -1,62 +0,0 @@
-package cryptor
-
-import (
-	"testing"
-
-	"github.com/duke-git/lancet/internal"
-)
-
-func TestDesEcbEncrypt(t *testing.T) {
-	data := "hello world"
-	key := "abcdefgh"
-
-	desEcbEncrypt := DesEcbEncrypt([]byte(data), []byte(key))
-	desEcbDecrypt := DesEcbDecrypt(desEcbEncrypt, []byte(key))
-
-	assert := internal.NewAssert(t, "TestDesEcbEncrypt")
-	assert.Equal(data, string(desEcbDecrypt))
-}
-
-func TestDesCbcEncrypt(t *testing.T) {
-	data := "hello world"
-	key := "abcdefgh"
-
-	desCbcEncrypt := DesCbcEncrypt([]byte(data), []byte(key))
-	desCbcDecrypt := DesCbcDecrypt(desCbcEncrypt, []byte(key))
-
-	assert := internal.NewAssert(t, "TestDesCbcEncrypt")
-	assert.Equal(data, string(desCbcDecrypt))
-}
-
-func TestDesCtrCrypt(t *testing.T) {
-	data := "hello world"
-	key := "abcdefgh"
-
-	desCtrCrypt := DesCtrCrypt([]byte(data), []byte(key))
-	desCtrDeCrypt := DesCtrCrypt(desCtrCrypt, []byte(key))
-
-	assert := internal.NewAssert(t, "TestDesCtrCrypt")
-	assert.Equal(data, string(desCtrDeCrypt))
-}
-
-func TestDesCfbEncrypt(t *testing.T) {
-	data := "hello world"
-	key := "abcdefgh"
-
-	desCfbEncrypt := DesCfbEncrypt([]byte(data), []byte(key))
-	desCfbDecrypt := DesCfbDecrypt(desCfbEncrypt, []byte(key))
-
-	assert := internal.NewAssert(t, "TestDesCfbEncrypt")
-	assert.Equal(data, string(desCfbDecrypt))
-}
-
-func TestDesOfbEncrypt(t *testing.T) {
-	data := "hello world"
-	key := "abcdefgh"
-
-	desOfbEncrypt := DesOfbEncrypt([]byte(data), []byte(key))
-	desOfbDecrypt := DesOfbDecrypt(desOfbEncrypt, []byte(key))
-
-	assert := internal.NewAssert(t, "TestDesOfbEncrypt")
-	assert.Equal(data, string(desOfbDecrypt))
-}

cryptor/rsa.go

@@ -1,118 +0,0 @@
-// Copyright 2021 dudaodong@gmail.com. All rights reserved.
-// Use of this source code is governed by MIT license
-
-// Package cryptor implements some util functions to encrypt and decrypt.
-package cryptor
-
-import (
-	"crypto/rand"
-	"crypto/rsa"
-	"crypto/x509"
-	"encoding/pem"
-	"os"
-)
-
-// GenerateRsaKey make  a rsa private key, and return key file name
-// Generated key file is `rsa_private.pem` and `rsa_public.pem` in current path
-func GenerateRsaKey(keySize int, priKeyFile, pubKeyFile string) error {
-	// private key
-	privateKey, err := rsa.GenerateKey(rand.Reader, keySize)
-	if err != nil {
-		return err
-	}
-
-	derText := x509.MarshalPKCS1PrivateKey(privateKey)
-
-	block := pem.Block{
-		Type:  "rsa private key",
-		Bytes: derText,
-	}
-
-	//file,err := os.Create("rsa_private.pem")
-	file, err := os.Create(priKeyFile)
-	if err != nil {
-		panic(err)
-	}
-	pem.Encode(file, &block)
-	file.Close()
-
-	// public key
-	publicKey := privateKey.PublicKey
-
-	derpText, err := x509.MarshalPKIXPublicKey(&publicKey)
-	if err != nil {
-		return err
-	}
-
-	block = pem.Block{
-		Type:  "rsa public key",
-		Bytes: derpText,
-	}
-
-	//file,err = os.Create("rsa_public.pem")
-	file, err = os.Create(pubKeyFile)
-	if err != nil {
-		return err
-	}
-	pem.Encode(file, &block)
-	file.Close()
-
-	return nil
-}
-
-// RsaEncrypt encrypt data with ras algorithm
-func RsaEncrypt(data []byte, pubKeyFileName string) []byte {
-	file, err := os.Open(pubKeyFileName)
-	if err != nil {
-		panic(err)
-	}
-	fileInfo, err := file.Stat()
-	if err != nil {
-		panic(err)
-	}
-	defer file.Close()
-	buf := make([]byte, fileInfo.Size())
-	file.Read(buf)
-
-	block, _ := pem.Decode(buf)
-
-	pubInterface, err := x509.ParsePKIXPublicKey(block.Bytes)
-	if err != nil {
-		panic(err)
-	}
-	pubKey := pubInterface.(*rsa.PublicKey)
-
-	cipherText, err := rsa.EncryptPKCS1v15(rand.Reader, pubKey, data)
-	if err != nil {
-		panic(err)
-	}
-	return cipherText
-}
-
-// RsaDecrypt decrypt data with ras algorithm
-func RsaDecrypt(data []byte, privateKeyFileName string) []byte {
-	file, err := os.Open(privateKeyFileName)
-	if err != nil {
-		panic(err)
-	}
-	fileInfo, err := file.Stat()
-	if err != nil {
-		panic(err)
-	}
-	buf := make([]byte, fileInfo.Size())
-	defer file.Close()
-	file.Read(buf)
-
-	block, _ := pem.Decode(buf)
-
-	priKey, err := x509.ParsePKCS1PrivateKey(block.Bytes)
-	if err != nil {
-		panic(err)
-	}
-
-	plainText, err := rsa.DecryptPKCS1v15(rand.Reader, priKey, data)
-	if err != nil {
-		panic(err)
-	}
-	return plainText
-}

cryptor/rsa_test.go

@@ -1,20 +0,0 @@
-package cryptor
-
-import (
-	"testing"
-
-	"github.com/duke-git/lancet/internal"
-)
-
-func TestRsaEncrypt(t *testing.T) {
-	err := GenerateRsaKey(4096, "rsa_private.pem", "rsa_public.pem")
-	if err != nil {
-		t.FailNow()
-	}
-	data := []byte("hello world")
-	encrypted := RsaEncrypt(data, "rsa_public.pem")
-	decrypted := RsaDecrypt(encrypted, "rsa_private.pem")
-
-	assert := internal.NewAssert(t, "TestRsaEncrypt")
-	assert.Equal(string(data), string(decrypted))
-}

datetime/datetime.go

@@ -3,29 +3,36 @@
 
 // Package datetime implements some functions to format date and time.
 // Note:
-// 1. `format` param in FormatTimeToStr function should be as flow:
-//"yyyy-mm-dd hh:mm:ss"
-//"yyyy-mm-dd hh:mm"
-//"yyyy-mm-dd hh"
-//"yyyy-mm-dd"
-//"yyyy-mm"
-//"mm-dd"
-//"dd-mm-yy hh:mm:ss"
-//"yyyy/mm/dd hh:mm:ss"
-//"yyyy/mm/dd hh:mm"
-//"yyyy/mm/dd hh"
-//"yyyy/mm/dd"
-//"yyyy/mm"
-//"mm/dd"
-//"dd/mm/yy hh:mm:ss"
-//"yyyy"
-//"mm"
-//"hh:mm:ss"
-//"mm:ss"
+// 1. `format` param in FormatTimeToStr function should be as flow (case no sensitive):
+// "yyyy-mm-dd hh:mm:ss"
+// "yyyy-mm-dd hh:mm"
+// "yyyy-mm-dd hh"
+// "yyyy-mm-dd"
+// "yyyy-mm"
+// "mm-dd"
+// "dd-mm-yy hh:mm:ss"
+// "yyyy/mm/dd hh:mm:ss"
+// "yyyy/mm/dd hh:mm"
+// "yyyy/mm/dd hh"
+// "yyyy/mm/dd"
+// "yyyy/mm"
+// "mm/dd"
+// "dd/mm/yy hh:mm:ss"
+// "yyyymmdd"
+// "mmddyy"
+// "yyyy"
+// "yy"
+// "mm"
+// "hh:mm:ss"
+// "hh:mm"
+// "mm:ss"
+
 package datetime
 
 import (
 	"fmt"
+	"runtime"
+	"strings"
 	"time"
 )
 
@@ -35,7 +42,7 @@ func init() {
 	timeFormat = map[string]string{
 		"yyyy-mm-dd hh:mm:ss": "2006-01-02 15:04:05",
 		"yyyy-mm-dd hh:mm":    "2006-01-02 15:04",
-		"yyyy-mm-dd hh":       "2006-01-02 15:04",
+		"yyyy-mm-dd hh":       "2006-01-02 15",
 		"yyyy-mm-dd":          "2006-01-02",
 		"yyyy-mm":             "2006-01",
 		"mm-dd":               "01-02",
@@ -47,9 +54,13 @@ func init() {
 		"yyyy/mm":             "2006/01",
 		"mm/dd":               "01/02",
 		"dd/mm/yy hh:mm:ss":   "02/01/06 15:04:05",
+		"yyyymmdd":            "20060102",
+		"mmddyy":              "010206",
 		"yyyy":                "2006",
+		"yy":                  "06",
 		"mm":                  "01",
 		"hh:mm:ss":            "15:04:05",
+		"hh:mm":               "15:04",
 		"mm:ss":               "04:05",
 	}
 }
@@ -69,6 +80,11 @@ func AddDay(t time.Time, day int64) time.Time {
 	return t.Add(24 * time.Hour * time.Duration(day))
 }
 
+// AddYear add or sub year to the time.
+func AddYear(t time.Time, year int64) time.Time {
+	return t.Add(365 * 24 * time.Hour * time.Duration(year))
+}
+
 // GetNowDate return format yyyy-mm-dd of current date
 func GetNowDate() string {
 	return time.Now().Format("2006-01-02")
@@ -97,18 +113,39 @@ func GetNightTimestamp() int64 {
 }
 
 // FormatTimeToStr convert time to string
-func FormatTimeToStr(t time.Time, format string) string {
-	return t.Format(timeFormat[format])
+func FormatTimeToStr(t time.Time, format string, timezone ...string) string {
+	tf, ok := timeFormat[strings.ToLower(format)]
+	if !ok {
+		return ""
+	}
+
+	if timezone != nil && timezone[0] != "" {
+		loc, err := time.LoadLocation(timezone[0])
+		if err != nil {
+			return ""
+		}
+		return t.In(loc).Format(tf)
+	}
+	return t.Format(tf)
 }
 
 // FormatStrToTime convert string to time
-func FormatStrToTime(str, format string) (time.Time, error) {
-	v, ok := timeFormat[format]
+func FormatStrToTime(str, format string, timezone ...string) (time.Time, error) {
+	tf, ok := timeFormat[strings.ToLower(format)]
 	if !ok {
-		return time.Time{}, fmt.Errorf("format %s not found", format)
+		return time.Time{}, fmt.Errorf("format %s not support", format)
 	}
 
-	return time.Parse(v, str)
+	if timezone != nil && timezone[0] != "" {
+		loc, err := time.LoadLocation(timezone[0])
+		if err != nil {
+			return time.Time{}, err
+		}
+
+		return time.ParseInLocation(tf, str, loc)
+	}
+
+	return time.Parse(tf, str)
 }
 
 // BeginOfMinute return beginning minute time of day
@@ -180,3 +217,166 @@ func BeginOfYear(t time.Time) time.Time {
 func EndOfYear(t time.Time) time.Time {
 	return BeginOfYear(t).AddDate(1, 0, 0).Add(-time.Nanosecond)
 }
+
+// IsLeapYear check if param year is leap year or not.
+func IsLeapYear(year int) bool {
+	return year%4 == 0 && (year%100 != 0 || year%400 == 0)
+}
+
+// BetweenSeconds returns the number of seconds between two times.
+func BetweenSeconds(t1 time.Time, t2 time.Time) int64 {
+	index := t2.Unix() - t1.Unix()
+	return index
+}
+
+// DayOfYear returns which day of the year the parameter date `t` is.
+func DayOfYear(t time.Time) int {
+	y, m, d := t.Date()
+	firstDay := time.Date(y, 1, 1, 0, 0, 0, 0, t.Location())
+	nowDate := time.Date(y, m, d, 0, 0, 0, 0, t.Location())
+
+	return int(nowDate.Sub(firstDay).Hours() / 24)
+}
+
+// IsWeekend checks if passed time is weekend or not.
+func IsWeekend(t time.Time) bool {
+	return time.Saturday == t.Weekday() || time.Sunday == t.Weekday()
+}
+
+// NowDateOrTime return current datetime with specific format and timezone.
+func NowDateOrTime(format string, timezone ...string) string {
+	tf, ok := timeFormat[strings.ToLower(format)]
+	if !ok {
+		return ""
+	}
+
+	if timezone != nil && timezone[0] != "" {
+		loc, err := time.LoadLocation(timezone[0])
+		if err != nil {
+			return ""
+		}
+
+		return time.Now().In(loc).Format(tf)
+	}
+
+	return time.Now().Format(tf)
+}
+
+// Timestamp return current second timestamp.
+func Timestamp(timezone ...string) int64 {
+	t := time.Now()
+
+	if timezone != nil && timezone[0] != "" {
+		loc, err := time.LoadLocation(timezone[0])
+		if err != nil {
+			return 0
+		}
+
+		t = t.In(loc)
+	}
+
+	return t.Unix()
+}
+
+// TimestampMilli return current mill second timestamp.
+func TimestampMilli(timezone ...string) int64 {
+	t := time.Now()
+
+	if timezone != nil && timezone[0] != "" {
+		loc, err := time.LoadLocation(timezone[0])
+		if err != nil {
+			return 0
+		}
+		t = t.In(loc)
+	}
+
+	return int64(time.Nanosecond) * t.UnixNano() / int64(time.Millisecond)
+}
+
+// TimestampMicro return current micro second timestamp.
+func TimestampMicro(timezone ...string) int64 {
+	t := time.Now()
+
+	if timezone != nil && timezone[0] != "" {
+		loc, err := time.LoadLocation(timezone[0])
+		if err != nil {
+			return 0
+		}
+		t = t.In(loc)
+	}
+
+	return int64(time.Nanosecond) * t.UnixNano() / int64(time.Microsecond)
+}
+
+// TimestampNano return current nano second timestamp.
+func TimestampNano(timezone ...string) int64 {
+	t := time.Now()
+
+	if timezone != nil && timezone[0] != "" {
+		loc, err := time.LoadLocation(timezone[0])
+		if err != nil {
+			return 0
+		}
+		t = t.In(loc)
+	}
+
+	return t.UnixNano()
+}
+
+// TrackFuncTime track the time of function execution.
+// call it at top of the func like `defer TrackFuncTime(time.Now())()`
+func TrackFuncTime(pre time.Time) func() {
+	callerName := getCallerName()
+	return func() {
+		elapsed := time.Since(pre)
+		fmt.Printf("Function %s execution time:\t %v", callerName, elapsed)
+	}
+}
+
+func getCallerName() string {
+	pc, _, _, ok := runtime.Caller(2)
+	if !ok {
+		return "Unknown"
+	}
+	fn := runtime.FuncForPC(pc)
+	if fn == nil {
+		return "Unknown"
+	}
+
+	fullName := fn.Name()
+	if lastDot := strings.LastIndex(fullName, "."); lastDot != -1 {
+		return fullName[lastDot+1:]
+	}
+
+	return fullName
+}
+
+// DaysBetween returns the number of days between two times.
+func DaysBetween(start, end time.Time) int {
+	duration := end.Sub(start)
+	days := int(duration.Hours() / 24)
+
+	return days
+}
+
+// GenerateDatetimesBetween returns a slice of strings between two times.
+// layout: the format of the datetime string
+// interval: the interval between two datetimes
+func GenerateDatetimesBetween(start, end time.Time, layout string, interval string) ([]string, error) {
+	var result []string
+
+	if start.After(end) {
+		start, end = end, start
+	}
+
+	duration, err := time.ParseDuration(interval)
+	if err != nil {
+		return nil, err
+	}
+
+	for current := start; !current.After(end); current = current.Add(duration) {
+		result = append(result, current.Format(layout))
+	}
+
+	return result, nil
+}

datetime/datetime_test.go

@@ -46,6 +46,19 @@ func TestAddMinute(t *testing.T) {
 	assert.Equal(float64(-2), diff2.Minutes())
 }
 
+func TestAddYear(t *testing.T) {
+	assert := internal.NewAssert(t, "TestAddDay")
+
+	now := time.Now()
+	after2Years := AddYear(now, 1)
+	diff1 := after2Years.Sub(now)
+	assert.Equal(float64(8760), diff1.Hours())
+
+	before2Years := AddYear(now, -1)
+	diff2 := before2Years.Sub(now)
+	assert.Equal(float64(-8760), diff2.Hours())
+}
+
 func TestGetNowDate(t *testing.T) {
 	assert := internal.NewAssert(t, "TestGetNowDate")
 	expected := time.Now().Format("2006-01-02")
@@ -231,3 +244,203 @@ func TestEndOfYear(t *testing.T) {
 
 	assert.Equal(expected, actual)
 }
+
+func TestIsLeapYear(t *testing.T) {
+	assert := internal.NewAssert(t, "TestEndOfYear")
+
+	result1 := IsLeapYear(2000)
+	result2 := IsLeapYear(2001)
+
+	assert.Equal(true, result1)
+	assert.Equal(false, result2)
+}
+
+func TestBetweenSeconds(t *testing.T) {
+	assert := internal.NewAssert(t, "TestBetweenSeconds")
+
+	today := time.Now()
+	tomorrow := AddDay(today, 1)
+	yesterday := AddDay(today, -1)
+
+	result1 := BetweenSeconds(today, tomorrow)
+	result2 := BetweenSeconds(today, yesterday)
+
+	assert.Equal(int64(86400), result1)
+	assert.Equal(int64(-86400), result2)
+}
+
+func TestDayOfYear(t *testing.T) {
+	assert := internal.NewAssert(t, "TestDayOfYear")
+	date1 := time.Date(2023, 02, 01, 1, 1, 1, 0, time.Local)
+	result1 := DayOfYear(date1)
+	assert.Equal(31, result1)
+
+	date2 := time.Date(2023, 01, 02, 1, 1, 1, 0, time.Local)
+	result2 := DayOfYear(date2)
+	assert.Equal(1, result2)
+
+	date3 := time.Date(2023, 01, 01, 1, 1, 1, 0, time.Local)
+	result3 := DayOfYear(date3)
+	assert.Equal(0, result3)
+}
+
+func TestIsWeekend(t *testing.T) {
+	assert := internal.NewAssert(t, "TestIsWeekend")
+	date := time.Date(2023, 06, 03, 0, 0, 0, 0, time.Local)
+	result := IsWeekend(date)
+	assert.Equal(true, result)
+
+	date1 := time.Date(2023, 06, 04, 0, 0, 0, 0, time.Local)
+	result1 := IsWeekend(date1)
+	assert.Equal(true, result1)
+
+	date2 := time.Date(2023, 06, 02, 0, 0, 0, 0, time.Local)
+	result2 := IsWeekend(date2)
+	assert.Equal(false, result2)
+}
+
+func TestNowDateOrTime(t *testing.T) {
+	t.Parallel()
+
+	formats := []string{
+		"yyyy-mm-dd hh:mm:ss",
+		"yyyy-mm-dd",
+		"dd-mm-yy hh:mm:ss",
+		"yyyy/mm/dd hh:mm:ss",
+		"hh:mm:ss",
+		"yyyy/mm",
+		"yyyy-mm-dd hh",
+	}
+
+	for i := 0; i < len(formats); i++ {
+		result := NowDateOrTime(formats[i], "UTC")
+		t.Log(result)
+	}
+}
+
+func TestTimestamp(t *testing.T) {
+	t.Parallel()
+
+	ts1 := Timestamp()
+	t.Log(ts1)
+
+	ts2 := TimestampMilli()
+	t.Log(ts2)
+
+	ts3 := TimestampMicro()
+	t.Log(ts3)
+
+	ts4 := TimestampNano()
+	t.Log(ts4)
+}
+
+func TestTrackFuncTime(t *testing.T) {
+	defer TrackFuncTime(time.Now())()
+
+	var n int
+	for i := 0; i < 5000000; i++ {
+		n++
+	}
+}
+
+func TestDaysBetween(t *testing.T) {
+	t.Parallel()
+
+	assert := internal.NewAssert(t, "TestDaysBetween")
+
+	tests := []struct {
+		start    time.Time
+		end      time.Time
+		expected int
+	}{
+		{
+			start:    time.Date(2024, time.September, 1, 0, 0, 0, 0, time.UTC),
+			end:      time.Date(2024, time.September, 10, 0, 0, 0, 0, time.UTC),
+			expected: 9,
+		},
+		{
+			start:    time.Date(2024, time.September, 10, 0, 0, 0, 0, time.UTC),
+			end:      time.Date(2024, time.September, 1, 0, 0, 0, 0, time.UTC),
+			expected: -9,
+		},
+		{
+			start:    time.Date(2024, time.September, 1, 0, 0, 0, 0, time.UTC),
+			end:      time.Date(2024, time.September, 1, 0, 0, 0, 0, time.UTC),
+			expected: 0,
+		},
+		{
+			start:    time.Date(2024, time.January, 1, 0, 0, 0, 0, time.UTC),
+			end:      time.Date(2024, time.December, 31, 0, 0, 0, 0, time.UTC),
+			expected: 365,
+		},
+		{
+			start:    time.Date(2024, time.March, 1, 0, 0, 0, 0, time.UTC),
+			end:      time.Date(2024, time.March, 31, 0, 0, 0, 0, time.UTC),
+			expected: 30,
+		},
+	}
+
+	for _, tt := range tests {
+		result := DaysBetween(tt.start, tt.end)
+		assert.Equal(tt.expected, result)
+	}
+}
+
+func TestGenerateDatetimesBetween(t *testing.T) {
+	t.Parallel()
+
+	assert := internal.NewAssert(t, "TestGenerateDatetimesBetween")
+
+	tests := []struct {
+		start    time.Time
+		end      time.Time
+		layout   string
+		interval string
+		expected []string
+	}{
+		{
+			start:    time.Date(2024, time.September, 1, 0, 0, 0, 0, time.UTC),
+			end:      time.Date(2024, time.September, 1, 2, 0, 0, 0, time.UTC),
+			layout:   "2006-01-02 15:04:05",
+			interval: "30m",
+			expected: []string{
+				"2024-09-01 00:00:00",
+				"2024-09-01 00:30:00",
+				"2024-09-01 01:00:00",
+				"2024-09-01 01:30:00",
+				"2024-09-01 02:00:00",
+			},
+		},
+		{
+			start:    time.Date(2024, time.September, 1, 0, 0, 0, 0, time.UTC),
+			end:      time.Date(2024, time.September, 1, 0, 0, 0, 0, time.UTC),
+			layout:   "2006-01-02 15:04:05",
+			interval: "1h",
+			expected: []string{"2024-09-01 00:00:00"},
+		},
+		{
+			start:    time.Date(2024, time.September, 1, 0, 0, 0, 0, time.UTC),
+			end:      time.Date(2024, time.September, 1, 3, 0, 0, 0, time.UTC),
+			layout:   "2006-01-02 15:04:05",
+			interval: "2h",
+			expected: []string{
+				"2024-09-01 00:00:00",
+				"2024-09-01 02:00:00",
+			},
+		},
+	}
+
+	for _, tt := range tests {
+		result, err := GenerateDatetimesBetween(tt.start, tt.end, tt.layout, tt.interval)
+
+		assert.Equal(tt.expected, result)
+		assert.IsNil(err)
+	}
+
+	t.Run("Invalid interval", func(t *testing.T) {
+		_, err := GenerateDatetimesBetween(time.Now(), time.Now(), "2006-01-02 15:04:05", "invalid")
+		if err == nil {
+			t.Fatal("Expected error, got nil")
+		}
+	})
+}

docs/compare.md

@@ -0,0 +1,326 @@
+# Compare
+
+Package compare provides a lightweight comparison function on any type.
+
+<div STYLE="page-break-after: always;"></div>
+
+## Source:
+
+-   [https://github.com/duke-git/lancet/blob/v1/compare/compare.go](https://github.com/duke-git/lancet/blob/v1/compare/compare.go)
+
+-   [https://github.com/duke-git/lancet/blob/v1/compare/compare_internal.go](https://github.com/duke-git/lancet/blob/v1/compare/compare_internal.go)
+
+<div STYLE="page-break-after: always;"></div>
+
+## Usage:
+
+```go
+import (
+    "github.com/duke-git/lancet/condition"
+)
+```
+
+<div STYLE="page-break-after: always;"></div>
+
+## Index
+
+-   [Equal](#Equal)
+-   [EqualValue](#EqualValue)
+-   [LessThan](#LessThan)
+-   [GreaterThan](#GreaterThan)
+-   [LessOrEqual](#LessOrEqual)
+-   [GreaterOrEqual](#GreaterOrEqual)
+
+<div STYLE="page-break-after: always;"></div>
+
+## Documentation
+
+### <span id="Equal">Equal</span>
+
+<p>Checks if two values are equal or not. (check both type and value)</p>
+
+<b>Signature:</b>
+
+```go
+func Equal(left, right interface{}) bool
+```
+
+<b>Example:</b>
+
+```go
+package main
+
+import (
+    "fmt"
+    "github.com/duke-git/lancet/compare"
+)
+
+func main() {
+    result1 := compare.Equal(1, 1)
+    result2 := compare.Equal("1", "1")
+    result3 := compare.Equal([]int{1, 2, 3}, []int{1, 2, 3})
+    result4 := compare.Equal(map[int]string{1: "a", 2: "b"}, map[int]string{1: "a", 2: "b"})
+
+    result5 := compare.Equal(1, "1")
+    result6 := compare.Equal(1, int64(1))
+    result7 := compare.Equal([]int{1, 2}, []int{1, 2, 3})
+
+    fmt.Println(result1)
+    fmt.Println(result2)
+    fmt.Println(result3)
+    fmt.Println(result4)
+    fmt.Println(result5)
+    fmt.Println(result6)
+    fmt.Println(result7)
+
+    // Output:
+    // true
+    // true
+    // true
+    // true
+    // false
+    // false
+    // false
+}
+```
+
+### <span id="EqualValue">EqualValue</span>
+
+<p>Checks if two values are equal or not. (check value only)</p>
+
+<b>Signature:</b>
+
+```go
+func EqualValue(left, right interface{}) bool
+```
+
+<b>Example:</b>
+
+```go
+package main
+
+import (
+    "fmt"
+    "github.com/duke-git/lancet/compare"
+)
+
+func main() {
+    result1 := compare.EqualValue(1, 1)
+    result2 := compare.EqualValue(int(1), int64(1))
+    result3 := compare.EqualValue(1, "1")
+    result4 := compare.EqualValue(1, "2")
+
+    fmt.Println(result1)
+    fmt.Println(result2)
+    fmt.Println(result3)
+    fmt.Println(result4)
+
+    // Output:
+    // true
+    // true
+    // true
+    // false
+}
+```
+
+### <span id="LessThan">LessThan</span>
+
+<p>Checks if value `left` less than value `right`.</p>
+
+<b>Signature:</b>
+
+```go
+func LessThan(left, right interface{}) bool
+```
+
+<b>Example:</b>
+
+```go
+package main
+
+import (
+    "fmt"
+    "github.com/duke-git/lancet/compare"
+)
+
+func main() {
+    result1 := compare.LessThan(1, 2)
+    result2 := compare.LessThan(1.1, 2.2)
+    result3 := compare.LessThan("a", "b")
+
+    time1 := time.Now()
+    time2 := time1.Add(time.Second)
+    result4 := compare.LessThan(time1, time2)
+
+    result5 := compare.LessThan(2, 1)
+    result6 := compare.LessThan(1, int64(2))
+
+    fmt.Println(result1)
+    fmt.Println(result2)
+    fmt.Println(result3)
+    fmt.Println(result4)
+    fmt.Println(result5)
+    fmt.Println(result6)
+
+    // Output:
+    // true
+    // true
+    // true
+    // true
+    // false
+    // false
+}
+```
+
+### <span id="GreaterThan">GreaterThan</span>
+
+<p>Checks if value `left` greater than value `right`.</p>
+
+<b>Signature:</b>
+
+```go
+func GreaterThan(left, right interface{}) bool
+```
+
+<b>Example:</b>
+
+```go
+package main
+
+import (
+    "fmt"
+    "github.com/duke-git/lancet/compare"
+)
+
+func main() {
+    result1 := compare.GreaterThan(2, 1)
+    result2 := compare.GreaterThan(2.2, 1.1)
+    result3 := compare.GreaterThan("b", "a")
+
+    time1 := time.Now()
+    time2 := time1.Add(time.Second)
+    result4 := compare.GreaterThan(time2, time1)
+
+    result5 := compare.GreaterThan(1, 2)
+    result6 := compare.GreaterThan(int64(2), 1)
+    result7 := compare.GreaterThan("b", "c")
+
+    fmt.Println(result1)
+    fmt.Println(result2)
+    fmt.Println(result3)
+    fmt.Println(result4)
+    fmt.Println(result5)
+    fmt.Println(result6)
+    fmt.Println(result7)
+
+    // Output:
+    // true
+    // true
+    // true
+    // true
+    // false
+    // false
+    // false
+}
+```
+
+### <span id="LessOrEqual">LessOrEqual</span>
+
+<p>Checks if value `left` less than or equal than value `right`.</p>
+
+<b>Signature:</b>
+
+```go
+func LessOrEqual(left, right interface{}) bool
+```
+
+<b>Example:</b>
+
+```go
+package main
+
+import (
+    "fmt"
+    "github.com/duke-git/lancet/compare"
+)
+
+func main() {
+    result1 := compare.LessOrEqual(1, 1)
+    result2 := compare.LessOrEqual(1.1, 2.2)
+    result3 := compare.LessOrEqual("a", "b")
+
+    time1 := time.Now()
+    time2 := time1.Add(time.Second)
+    result4 := compare.LessOrEqual(time1, time2)
+
+    result5 := compare.LessOrEqual(2, 1)
+    result6 := compare.LessOrEqual(1, int64(2))
+
+    fmt.Println(result1)
+    fmt.Println(result2)
+    fmt.Println(result3)
+    fmt.Println(result4)
+    fmt.Println(result5)
+    fmt.Println(result6)
+
+    // Output:
+    // true
+    // true
+    // true
+    // true
+    // false
+    // false
+}
+```
+
+### <span id="GreaterOrEqual">GreaterOrEqual</span>
+
+<p>Checks if value `left` less greater or equal than value `right`.</p>
+
+<b>Signature:</b>
+
+```go
+func GreaterOrEqual(left, right interface{}) bool
+```
+
+<b>Example:</b>
+
+```go
+package main
+
+import (
+    "fmt"
+    "github.com/duke-git/lancet/compare"
+)
+
+func main() {
+    result1 := compare.GreaterOrEqual(1, 1)
+    result2 := compare.GreaterOrEqual(2.2, 1.1)
+    result3 := compare.GreaterOrEqual("b", "b")
+
+    time1 := time.Now()
+    time2 := time1.Add(time.Second)
+    result4 := compare.GreaterOrEqual(time2, time1)
+
+    result5 := compare.GreaterOrEqual(1, 2)
+    result6 := compare.GreaterOrEqual(int64(2), 1)
+    result7 := compare.GreaterOrEqual("b", "c")
+
+    fmt.Println(result1)
+    fmt.Println(result2)
+    fmt.Println(result3)
+    fmt.Println(result4)
+    fmt.Println(result5)
+    fmt.Println(result6)
+    fmt.Println(result7)
+
+    // Output:
+    // true
+    // true
+    // true
+    // true
+    // false
+    // false
+    // false
+}
+```

docs/compare_zh-CN.md

@@ -0,0 +1,326 @@
+# Compare
+
+compare包提供几个轻量级的类型比较函数。
+
+<div STYLE="page-break-after: always;"></div>
+
+## 源码:
+
+-   [https://github.com/duke-git/lancet/blob/v1/compare/compare.go](https://github.com/duke-git/lancet/blob/v1/compare/compare.go)
+
+-   [https://github.com/duke-git/lancet/blob/v1/compare/compare_internal.go](https://github.com/duke-git/lancet/blob/v1/compare/compare_internal.go)
+
+<div STYLE="page-break-after: always;"></div>
+
+## 用法:
+
+```go
+import (
+    "github.com/duke-git/lancet/condition"
+)
+```
+
+<div STYLE="page-break-after: always;"></div>
+
+## 目录
+
+-   [Equal](#Equal)
+-   [EqualValue](#EqualValue)
+-   [LessThan](#LessThan)
+-   [GreaterThan](#GreaterThan)
+-   [LessOrEqual](#LessOrEqual)
+-   [GreaterOrEqual](#GreaterOrEqual)
+
+<div STYLE="page-break-after: always;"></div>
+
+## Documentation
+
+### <span id="Equal">Equal</span>
+
+<p>检查两个值是否相等(检查类型和值)</p>
+
+<b>函数签名:</b>
+
+```go
+func Equal(left, right interface{}) bool
+```
+
+<b>示例:</b>
+
+```go
+package main
+
+import (
+    "fmt"
+    "github.com/duke-git/lancet/compare"
+)
+
+func main() {
+    result1 := compare.Equal(1, 1)
+    result2 := compare.Equal("1", "1")
+    result3 := compare.Equal([]int{1, 2, 3}, []int{1, 2, 3})
+    result4 := compare.Equal(map[int]string{1: "a", 2: "b"}, map[int]string{1: "a", 2: "b"})
+
+    result5 := compare.Equal(1, "1")
+    result6 := compare.Equal(1, int64(1))
+    result7 := compare.Equal([]int{1, 2}, []int{1, 2, 3})
+
+    fmt.Println(result1)
+    fmt.Println(result2)
+    fmt.Println(result3)
+    fmt.Println(result4)
+    fmt.Println(result5)
+    fmt.Println(result6)
+    fmt.Println(result7)
+
+    // Output:
+    // true
+    // true
+    // true
+    // true
+    // false
+    // false
+    // false
+}
+```
+
+### <span id="EqualValue">EqualValue</span>
+
+<p>检查两个值是否相等(只检查值)</p>
+
+<b>函数签名:</b>
+
+```go
+func EqualValue(left, right interface{}) bool
+```
+
+<b>示例:</b>
+
+```go
+package main
+
+import (
+    "fmt"
+    "github.com/duke-git/lancet/compare"
+)
+
+func main() {
+    result1 := compare.EqualValue(1, 1)
+    result2 := compare.EqualValue(int(1), int64(1))
+    result3 := compare.EqualValue(1, "1")
+    result4 := compare.EqualValue(1, "2")
+
+    fmt.Println(result1)
+    fmt.Println(result2)
+    fmt.Println(result3)
+    fmt.Println(result4)
+
+    // Output:
+    // true
+    // true
+    // true
+    // false
+}
+```
+
+### <span id="LessThan">LessThan</span>
+
+<p>验证参数`left`的值是否小于参数`right`的值。</p>
+
+<b>函数签名:</b>
+
+```go
+func LessThan(left, right interface{}) bool
+```
+
+<b>示例:</b>
+
+```go
+package main
+
+import (
+    "fmt"
+    "github.com/duke-git/lancet/compare"
+)
+
+func main() {
+    result1 := compare.LessThan(1, 2)
+    result2 := compare.LessThan(1.1, 2.2)
+    result3 := compare.LessThan("a", "b")
+
+    time1 := time.Now()
+    time2 := time1.Add(time.Second)
+    result4 := compare.LessThan(time1, time2)
+
+    result5 := compare.LessThan(2, 1)
+    result6 := compare.LessThan(1, int64(2))
+
+    fmt.Println(result1)
+    fmt.Println(result2)
+    fmt.Println(result3)
+    fmt.Println(result4)
+    fmt.Println(result5)
+    fmt.Println(result6)
+
+    // Output:
+    // true
+    // true
+    // true
+    // true
+    // false
+    // false
+}
+```
+
+### <span id="GreaterThan">GreaterThan</span>
+
+<p>验证参数`left`的值是否大于参数`right`的值。</p>
+
+<b>函数签名:</b>
+
+```go
+func GreaterThan(left, right interface{}) bool
+```
+
+<b>示例:</b>
+
+```go
+package main
+
+import (
+    "fmt"
+    "github.com/duke-git/lancet/compare"
+)
+
+func main() {
+    result1 := compare.GreaterThan(2, 1)
+    result2 := compare.GreaterThan(2.2, 1.1)
+    result3 := compare.GreaterThan("b", "a")
+
+    time1 := time.Now()
+    time2 := time1.Add(time.Second)
+    result4 := compare.GreaterThan(time2, time1)
+
+    result5 := compare.GreaterThan(1, 2)
+    result6 := compare.GreaterThan(int64(2), 1)
+    result7 := compare.GreaterThan("b", "c")
+
+    fmt.Println(result1)
+    fmt.Println(result2)
+    fmt.Println(result3)
+    fmt.Println(result4)
+    fmt.Println(result5)
+    fmt.Println(result6)
+    fmt.Println(result7)
+
+    // Output:
+    // true
+    // true
+    // true
+    // true
+    // false
+    // false
+    // false
+}
+```
+
+### <span id="LessOrEqual">LessOrEqual</span>
+
+<p>验证参数`left`的值是否小于或等于参数`right`的值。</p>
+
+<b>函数签名:</b>
+
+```go
+func LessOrEqual(left, right interface{}) bool
+```
+
+<b>示例:</b>
+
+```go
+package main
+
+import (
+    "fmt"
+    "github.com/duke-git/lancet/compare"
+)
+
+func main() {
+    result1 := compare.LessOrEqual(1, 1)
+    result2 := compare.LessOrEqual(1.1, 2.2)
+    result3 := compare.LessOrEqual("a", "b")
+
+    time1 := time.Now()
+    time2 := time1.Add(time.Second)
+    result4 := compare.LessOrEqual(time1, time2)
+
+    result5 := compare.LessOrEqual(2, 1)
+    result6 := compare.LessOrEqual(1, int64(2))
+
+    fmt.Println(result1)
+    fmt.Println(result2)
+    fmt.Println(result3)
+    fmt.Println(result4)
+    fmt.Println(result5)
+    fmt.Println(result6)
+
+    // Output:
+    // true
+    // true
+    // true
+    // true
+    // false
+    // false
+}
+```
+
+### <span id="GreaterOrEqual">GreaterOrEqual</span>
+
+<p>验证参数`left`的值是否大于或参数`right`的值。</p>
+
+<b>函数签名:</b>
+
+```go
+func GreaterOrEqual(left, right interface{}) bool
+```
+
+<b>示例:</b>
+
+```go
+package main
+
+import (
+    "fmt"
+    "github.com/duke-git/lancet/compare"
+)
+
+func main() {
+    result1 := compare.GreaterOrEqual(1, 1)
+    result2 := compare.GreaterOrEqual(2.2, 1.1)
+    result3 := compare.GreaterOrEqual("b", "b")
+
+    time1 := time.Now()
+    time2 := time1.Add(time.Second)
+    result4 := compare.GreaterOrEqual(time2, time1)
+
+    result5 := compare.GreaterOrEqual(1, 2)
+    result6 := compare.GreaterOrEqual(int64(2), 1)
+    result7 := compare.GreaterOrEqual("b", "c")
+
+    fmt.Println(result1)
+    fmt.Println(result2)
+    fmt.Println(result3)
+    fmt.Println(result4)
+    fmt.Println(result5)
+    fmt.Println(result6)
+    fmt.Println(result7)
+
+    // Output:
+    // true
+    // true
+    // true
+    // true
+    // false
+    // false
+    // false
+}
+```

docs/convertor.md

@@ -1,4 +1,5 @@
 # Convertor
+
 Package convertor contains some functions for data type convertion.
 
 <div STYLE="page-break-after: always;"></div>
@@ -10,6 +11,7 @@ Package convertor contains some functions for data type convertion.
 <div STYLE="page-break-after: always;"></div>
 
 ## Usage:
+
 ```go
 import (
     "github.com/duke-git/lancet/convertor"
@@ -20,28 +22,37 @@ import (
 
 ## Index
 
-- [ColorHexToRGB](#ColorHexToRGB)
-- [ColorRGBToHex](#ColorRGBToHex)
-- [ToBool](#ToBool)
-- [ToBytes](#ToBytes)
-- [ToChar](#ToChar)
-- [ToChannel](#ToChannel)
-- [ToFloat](#ToFloat)
-- [ToInt](#ToInt)
-- [ToJson](#ToJson)
-- [ToString](#ToString)
-- [StructToMap](#StructToMap)
-- [EncodeByte](#EncodeByte)
-- [DecodeByte](#DecodeByte)
-- [DeepClone](#DeepClone)
+-   [ColorHexToRGB](#ColorHexToRGB)
+-   [ColorRGBToHex](#ColorRGBToHex)
+-   [ToBool](#ToBool)
+-   [ToBytes](#ToBytes)
+-   [ToChar](#ToChar)
+-   [ToChannel](#ToChannel)
+-   [ToFloat](#ToFloat)
+-   [ToInt](#ToInt)
+-   [ToJson](#ToJson)
+-   [ToString](#ToString)
+-   [StructToMap](#StructToMap)
+-   [MapToStruct](#MapToStruct)
+-   [EncodeByte](#EncodeByte)
+-   [DecodeByte](#DecodeByte)
+-   [DeepClone](#DeepClone)
+-   [CopyProperties](#CopyProperties)
+-   [ToInterface](#ToInterface)
+-   [Utf8ToGbk](#Utf8ToGbk)
+-   [GbkToUtf8](#GbkToUtf8)
+-   [ToStdBase64](#ToStdBase64)
+-   [ToUrlBase64](#ToUrlBase64)
+-   [ToRawStdBase64](#ToRawStdBase64)
+-   [ToRawUrlBase64](#ToRawUrlBase64)
+-   [ToBigInt](#ToBigInt)
 
 <div STYLE="page-break-after: always;"></div>
 
 ## Documentation
 
-
-
 ### <span id="ColorHexToRGB">ColorHexToRGB</span>
+
 <p>Convert color hex to color rgb.</p>
 
 <b>Signature:</b>
@@ -49,6 +60,7 @@ import (
 ```go
 func ColorHexToRGB(colorHex string) (red, green, blue int)
 ```
+
 <b>Example:</b>
 
 ```go
@@ -66,8 +78,6 @@ func main() {
 }
 ```
 
-
-
 ### <span id="ColorRGBToHex">ColorRGBToHex</span>
 
 <p>Convert color rgb to color hex.</p>
@@ -77,6 +87,7 @@ func main() {
 ```go
 func ColorRGBToHex(red, green, blue int) string
 ```
+
 <b>Example:</b>
 
 ```go
@@ -97,8 +108,6 @@ func main() {
 }
 ```
 
-
-
 ### <span id="ToBool">ToBool</span>
 
 <p>Convert string to a boolean value. Use strconv.ParseBool</p>
@@ -108,6 +117,7 @@ func main() {
 ```go
 func ToBool(s string) (bool, error)
 ```
+
 <b>Example:</b>
 
 ```go
@@ -133,8 +143,6 @@ func main() {
 }
 ```
 
-
-
 ### <span id="ToBytes">ToBytes</span>
 
 <p>Convert interface to byte slice.</p>
@@ -144,6 +152,7 @@ func main() {
 ```go
 func ToBytes(data interface{}) ([]byte, error)
 ```
+
 <b>Example:</b>
 
 ```go
@@ -163,8 +172,6 @@ func main() {
 }
 ```
 
-
-
 ### <span id="ToChar">ToChar</span>
 
 <p>Convert string to char slice.</p>
@@ -174,6 +181,7 @@ func main() {
 ```go
 func ToChar(s string) []string
 ```
+
 <b>Example:</b>
 
 ```go
@@ -196,7 +204,6 @@ func main() {
 }
 ```
 
-
 ### <span id="ToChannel">ToChannel</span>
 
 <p>Convert a collection of elements to a read-only channels.</p>
@@ -206,6 +213,7 @@ func main() {
 ```go
 func ToChannel(array []interface{}) <-chan interface{}
 ```
+
 <b>Example:</b>
 
 ```go
@@ -233,8 +241,6 @@ func main() {
 }
 ```
 
-
-
 ### <span id="ToFloat">ToFloat</span>
 
 <p>Convert interface to a float64 value. If param is a invalid floatable, will return 0 and error. </p>
@@ -244,6 +250,7 @@ func main() {
 ```go
 func ToFloat(value interface{}) (float64, error)
 ```
+
 <b>Example:</b>
 
 ```go
@@ -266,8 +273,6 @@ func main() {
 }
 ```
 
-
-
 ### <span id="ToInt">ToInt</span>
 
 <p>Convert interface to a int64 value. If param is a invalid intable, will return 0 and error. </p>
@@ -277,6 +282,7 @@ func main() {
 ```go
 func ToInt(value interface{}) (int64, error)
 ```
+
 <b>Example:</b>
 
 ```go
@@ -299,8 +305,6 @@ func main() {
 }
 ```
 
-
-
 ### <span id="ToJson">ToJson</span>
 
 <p>Convert interface to json string. If param can't be converted, will return "" and error. </p>
@@ -310,6 +314,7 @@ func main() {
 ```go
 func ToJson(value interface{}) (string, error)
 ```
+
 <b>Example:</b>
 
 ```go
@@ -327,8 +332,6 @@ func main() {
 }
 ```
 
-
-
 ### <span id="ToString">ToString</span>
 
 <p>Convert interface to string. </p>
@@ -338,6 +341,7 @@ func main() {
 ```go
 func ToString(value interface{}) string
 ```
+
 <b>Example:</b>
 
 ```go
@@ -355,17 +359,16 @@ func main() {
 }
 ```
 
-
-
 ### <span id="StructToMap">StructToMap</span>
 
-<p>Convert struct to map, only convert exported field, struct field tag `json` should be set.</p>
+<p>Converts struct to map, only convert exported field, struct field tag `json` should be set.</p>
 
 <b>Signature:</b>
 
 ```go
 func StructToMap(value interface{}) (map[string]interface{}, error)
 ```
+
 <b>Example:</b>
 
 ```go
@@ -391,6 +394,58 @@ func main() {
 }
 ```
 
+### <span id="MapToStruct">MapToStruct</span>
+
+<p>Converts map to struct, only convert exported field, struct field tag `json` should be set.</p>
+
+<b>Signature:</b>
+
+```go
+func MapToStruct(m map[string]interface{}, structObj interface{}) error
+```
+
+<b>Example:</b>
+
+```go
+package main
+
+import (
+    "fmt"
+    "github.com/duke-git/lancet/convertor"
+)
+
+func main() {
+    type Address struct {
+        Street string `json:"street"`
+        Number int    `json:"number"`
+    }
+
+    type Person struct {
+        Name  string   `json:"name"`
+        Age   int      `json:"age"`
+        Phone string   `json:"phone"`
+        Addr  *Address `json:"address"`
+    }
+
+    m := map[string]interface{}{
+        "name":  "Nothin",
+        "age":   28,
+        "phone": "123456789",
+        "address": map[string]interface{}{
+            "street": "test",
+            "number": 1,
+        },
+    }
+
+    var p Person
+    err := MapToStruct(m, &p)
+    if err != nil {
+        return
+    }
+
+    fmt.Printf("p.Addr.Street: %s", p.Addr.Street) //test
+}
+```
 
 ### <span id="EncodeByte">EncodeByte</span>
 
@@ -399,8 +454,9 @@ func main() {
 <b>Signature:</b>
 
 ```go
-func EncodeByte(data any) ([]byte, error)
+func EncodeByte(data interface{}) ([]byte, error)
 ```
+
 <b>Example:</b>
 
 ```go
@@ -417,8 +473,6 @@ func main() {
 }
 ```
 
-
-
 ### <span id="DecodeByte">DecodeByte</span>
 
 <p>Decode byte data to target object. target should be a pointer instance.</p>
@@ -426,8 +480,9 @@ func main() {
 <b>Signature:</b>
 
 ```go
-func DecodeByte(data []byte, target any) error
+func DecodeByte(data []byte, target interface{}) error
 ```
+
 <b>Example:</b>
 
 ```go
@@ -440,8 +495,8 @@ import (
 
 func main() {
     var result string
-	byteData := []byte{6, 12, 0, 3, 97, 98, 99}
-	convertor.DecodeByte(byteData, &result)
+    byteData := []byte{6, 12, 0, 3, 97, 98, 99}
+    convertor.DecodeByte(byteData, &result)
     fmt.Println(result) //"abc"
 }
 ```
@@ -453,7 +508,7 @@ func main() {
 <b>Signature:</b>
 
 ```go
-func DeepClone[T any](src T) T
+func DeepClone[T interface{}](src T) T
 ```
 
 <b>Example:</b>
@@ -468,44 +523,524 @@ import (
 
 func main() {
     type Struct struct {
-		Str        string
-		Int        int
-		Float      float64
-		Bool       bool
-		Nil        interface{}
-		unexported string
-	}
+        Str        string
+        Int        int
+        Float      float64
+        Bool       bool
+        Nil        interface{}
+        unexported string
+    }
 
-	cases := []interface{}{
-		true,
-		1,
-		0.1,
-		map[string]int{
-			"a": 1,
-			"b": 2,
-		},
-		&Struct{
-			Str:   "test",
-			Int:   1,
-			Float: 0.1,
-			Bool:  true,
-			Nil:   nil,
-			// unexported: "can't be cloned",
-		},
-	}
+    cases := []interface{}{
+        true,
+        1,
+        0.1,
+        map[string]int{
+            "a": 1,
+            "b": 2,
+        },
+        &Struct{
+            Str:   "test",
+            Int:   1,
+            Float: 0.1,
+            Bool:  true,
+            Nil:   nil,
+            // unexported: "can't be cloned",
+        },
+    }
 
-	for _, item := range cases {
-		cloned := convertor.DeepClone(item)
+    for _, item := range cases {
+        cloned := convertor.DeepClone(item)
 
-		isPointerEqual := &cloned == &item
-		fmt.Println(cloned, isPointerEqual)
-	}
+        isPointerEqual := &cloned == &item
+        fmt.Println(cloned, isPointerEqual)
+    }
 
-	// Output:
-	// true false
-	// 1 false
-	// 0.1 false
-	// map[a:1 b:2] false
-	// &{test 1 0.1 true <nil> } false
+    // Output:
+    // true false
+    // 1 false
+    // 0.1 false
+    // map[a:1 b:2] false
+    // &{test 1 0.1 true <nil> } false
+}
+```
+
+### <span id="CopyProperties">CopyProperties</span>
+
+<p>Copies each field from the source struct into the destination struct. Use json.Marshal/Unmarshal, so json tag should be set for fields of dst and src struct.</p>
+
+<b>Signature:</b>
+
+```go
+func CopyProperties(dst, src interface{}) error
+```
+
+<b>Example:</b>
+
+```go
+package main
+
+import (
+    "fmt"
+    "github.com/duke-git/lancet/convertor"
+)
+
+func main() {
+    type Disk struct {
+        Name    string  `json:"name"`
+        Total   string  `json:"total"`
+        Used    string  `json:"used"`
+        Percent float64 `json:"percent"`
+    }
+
+    type DiskVO struct {
+        Name    string  `json:"name"`
+        Total   string  `json:"total"`
+        Used    string  `json:"used"`
+        Percent float64 `json:"percent"`
+    }
+
+    type Indicator struct {
+        Id      string    `json:"id"`
+        Ip      string    `json:"ip"`
+        UpTime  string    `json:"upTime"`
+        LoadAvg string    `json:"loadAvg"`
+        Cpu     int       `json:"cpu"`
+        Disk    []Disk    `json:"disk"`
+        Stop    chan bool `json:"-"`
+    }
+
+    type IndicatorVO struct {
+        Id      string   `json:"id"`
+        Ip      string   `json:"ip"`
+        UpTime  string   `json:"upTime"`
+        LoadAvg string   `json:"loadAvg"`
+        Cpu     int64    `json:"cpu"`
+        Disk    []DiskVO `json:"disk"`
+    }
+
+    indicator := &Indicator{Id: "001", Ip: "127.0.0.1", Cpu: 1, Disk: []Disk{
+        {Name: "disk-001", Total: "100", Used: "1", Percent: 10},
+        {Name: "disk-002", Total: "200", Used: "1", Percent: 20},
+        {Name: "disk-003", Total: "300", Used: "1", Percent: 30},
+    }}
+
+    indicatorVO := IndicatorVO{}
+
+    err := convertor.CopyProperties(&indicatorVO, indicator)
+
+    if err != nil {
+        return
+    }
+
+    fmt.Println(indicatorVO.Id)
+    fmt.Println(indicatorVO.Ip)
+    fmt.Println(len(indicatorVO.Disk))
+
+    // Output:
+    // 001
+    // 127.0.0.1
+    // 3
+}
+```
+
+### <span id="ToInterface">ToInterface</span>
+
+<p>Converts reflect value to its interface type.</p>
+
+<b>Signature:</b>
+
+```go
+func ToInterface(v reflect.Value) (value interface{}, ok bool)
+```
+
+<b>Example:</b>
+
+```go
+package main
+
+import (
+    "fmt"
+    "github.com/duke-git/lancet/convertor"
+)
+
+func main() {
+    val := reflect.ValueOf("abc")
+    iVal, ok := convertor.ToInterface(val)
+
+    fmt.Printf("%T\n", iVal)
+    fmt.Printf("%v\n", iVal)
+    fmt.Println(ok)
+
+    // Output:
+    // string
+    // abc
+    // true    
+}
+```
+
+### <span id="Utf8ToGbk">Utf8ToGbk</span>
+
+<p>Converts utf8 encoding data to GBK encoding data.</p>
+
+<b>Signature:</b>
+
+```go
+func Utf8ToGbk(bs []byte) ([]byte, error)
+```
+
+<b>Example:</b>
+
+```go
+package main
+
+import (
+    "fmt"
+    "github.com/duke-git/lancet/convertor"
+    "github.com/duke-git/lancet/validator"
+)
+
+func main() {
+    utf8Data := []byte("hello")
+    gbkData, _ := convertor.Utf8ToGbk(utf8Data)
+
+    fmt.Println(utf8.Valid(utf8Data))
+    fmt.Println(validator.IsGBK(gbkData))
+
+    // Output:
+    // true
+    // true   
+}
+```
+
+### <span id="GbkToUtf8">GbkToUtf8</span>
+
+<p>Converts GBK encoding data to utf8 encoding data.</p>
+
+<b>Signature:</b>
+
+```go
+func GbkToUtf8(bs []byte) ([]byte, error)
+```
+
+<b>Example:</b>
+
+```go
+package main
+
+import (
+    "fmt"
+    "github.com/duke-git/lancet/convertor"
+)
+
+func main() {
+    gbkData, _ := convertor.Utf8ToGbk([]byte("hello"))
+    utf8Data, _ := convertor.GbkToUtf8(gbkData)
+
+    fmt.Println(utf8.Valid(utf8Data))
+    fmt.Println(string(utf8Data))
+
+    // Output:
+    // true
+    // hello   
+}
+```
+
+### <span id="ToStdBase64">ToStdBase64</span>
+
+<p>Convert a value to a string encoded in standard Base64. Error data of type "error" will also be encoded, and complex structures will be converted to a JSON-formatted string.</p>
+
+<b>Signature:</b>
+
+```go
+func ToStdBase64(value interface{}) string
+```
+
+<b>Example:</b>
+
+```go
+package main
+
+import (
+    "fmt"
+    "github.com/duke-git/lancet/convertor"
+)
+
+func main() {
+    afterEncode := convertor.ToStdBase64(nil)
+    fmt.Println(afterEncode)
+
+    afterEncode = convertor.ToStdBase64("")
+    fmt.Println(afterEncode)
+
+    stringVal := "hello"
+    afterEncode = convertor.ToStdBase64(stringVal)
+    fmt.Println(afterEncode)
+
+    byteSliceVal := []byte("hello")
+    afterEncode = convertor.ToStdBase64(byteSliceVal)
+    fmt.Println(afterEncode)
+
+    intVal := 123
+    afterEncode = convertor.ToStdBase64(intVal)
+    fmt.Println(afterEncode)
+
+    mapVal := map[string]interface{}{"a": "hi", "b": 2, "c": struct {
+        A string
+        B int
+    }{"hello", 3}}
+    afterEncode = convertor.ToStdBase64(mapVal)
+    fmt.Println(afterEncode)
+
+    floatVal := 123.456
+    afterEncode = convertor.ToStdBase64(floatVal)
+    fmt.Println(afterEncode)
+
+    boolVal := true
+    afterEncode = convertor.ToStdBase64(boolVal)
+    fmt.Println(afterEncode)
+
+    errVal := errors.New("err")
+    afterEncode = convertor.ToStdBase64(errVal)
+    fmt.Println(afterEncode)
+
+    // Output:
+    //
+    //
+    // aGVsbG8=
+    // aGVsbG8=
+    // MTIz
+    // eyJhIjoiaGkiLCJiIjoyLCJjIjp7IkEiOiJoZWxsbyIsIkIiOjN9fQ==
+    // MTIzLjQ1Ng==
+    // dHJ1ZQ==
+    // ZXJy
+}
+
+```
+
+### <span id="ToUrlBase64">ToUrlBase64</span>
+
+<p>Convert a value to a string encoded in url Base64. Error data of type "error" will also be encoded, and complex structures will be converted to a JSON-formatted string.</p>
+
+<b>Signature:</b>
+
+```go
+func ToUrlBase64(value interface{}) string
+```
+
+<b>Example:</b>
+
+```go
+package main
+
+import (
+    "fmt"
+    "github.com/duke-git/lancet/convertor"
+)
+
+func main() {
+    afterEncode := convertor.ToUrlBase64(nil)
+    fmt.Println(afterEncode)
+
+
+    stringVal := "hello"
+    afterEncode = convertor.ToUrlBase64(stringVal)
+    fmt.Println(afterEncode)
+
+    byteSliceVal := []byte("hello")
+    afterEncode = convertor.ToUrlBase64(byteSliceVal)
+    fmt.Println(afterEncode)
+
+    intVal := 123
+    afterEncode = convertor.ToUrlBase64(intVal)
+    fmt.Println(afterEncode)
+
+    mapVal := map[string]interface{}{"a": "hi", "b": 2, "c": struct {
+        A string
+        B int
+    }{"hello", 3}}
+    afterEncode = convertor.ToUrlBase64(mapVal)
+    fmt.Println(afterEncode)
+
+    floatVal := 123.456
+    afterEncode = convertor.ToUrlBase64(floatVal)
+    fmt.Println(afterEncode)
+
+    boolVal := true
+    afterEncode = convertor.ToUrlBase64(boolVal)
+    fmt.Println(afterEncode)
+
+    errVal := errors.New("err")
+    afterEncode = convertor.ToUrlBase64(errVal)
+    fmt.Println(afterEncode)
+
+    // Output:
+    //
+    // aGVsbG8=
+    // aGVsbG8=
+    // MTIz
+    // eyJhIjoiaGkiLCJiIjoyLCJjIjp7IkEiOiJoZWxsbyIsIkIiOjN9fQ==
+    // MTIzLjQ1Ng==
+    // dHJ1ZQ==
+    // ZXJy
+}
+
+```
+
+### <span id="ToRawStdBase64">ToRawStdBase64</span>
+
+<p>Convert a value to a string encoded in raw standard Base64. Error data of type "error" will also be encoded, and complex structures will be converted to a JSON-formatted string.</p>
+
+<b>Signature:</b>
+
+```go
+func ToRawStdBase64(value interface{}) string
+```
+
+<b>Example:</b>
+
+```go
+package main
+
+import (
+    "fmt"
+    "github.com/duke-git/lancet/convertor"
+)
+
+func main() {
+
+    stringVal := "hello"
+    afterEncode = convertor.ToRawStdBase64(stringVal)
+    fmt.Println(afterEncode)
+
+    byteSliceVal := []byte("hello")
+    afterEncode = convertor.ToRawStdBase64(byteSliceVal)
+    fmt.Println(afterEncode)
+
+    intVal := 123
+    afterEncode = convertor.ToRawStdBase64(intVal)
+    fmt.Println(afterEncode)
+
+    mapVal := map[string]interface{}{"a": "hi", "b": 2, "c": struct {
+        A string
+        B int
+    }{"hello", 3}}
+    afterEncode = convertor.ToRawStdBase64(mapVal)
+    fmt.Println(afterEncode)
+
+    floatVal := 123.456
+    afterEncode = convertor.ToRawStdBase64(floatVal)
+    fmt.Println(afterEncode)
+
+    boolVal := true
+    afterEncode = convertor.ToRawStdBase64(boolVal)
+    fmt.Println(afterEncode)
+
+    errVal := errors.New("err")
+    afterEncode = convertor.ToRawStdBase64(errVal)
+    fmt.Println(afterEncode)
+
+    // Output:
+    // aGVsbG8
+    // aGVsbG8
+    // MTIz
+    // eyJhIjoiaGkiLCJiIjoyLCJjIjp7IkEiOiJoZWxsbyIsIkIiOjN9fQ
+    // MTIzLjQ1Ng
+    // dHJ1ZQ
+    // ZXJy
+}
+```
+
+### <span id="ToRawUrlBase64">ToRawUrlBase64</span>
+
+<p> Convert a value to a string encoded in raw url Base64. Error data of type "error" will also be encoded, and complex structures will be converted to a JSON-formatted string.</p>
+
+<b>Signature:</b>
+
+```go
+func ToRawUrlBase64(value interface{}) string
+```
+
+<b>Example:</b>
+
+```go
+package main
+
+import (
+    "fmt"
+    "github.com/duke-git/lancet/convertor"
+)
+
+func main() {
+
+    stringVal := "hello"
+    afterEncode = convertor.ToRawUrlBase64(stringVal)
+    fmt.Println(afterEncode)
+
+    byteSliceVal := []byte("hello")
+    afterEncode = convertor.ToRawUrlBase64(byteSliceVal)
+    fmt.Println(afterEncode)
+
+    intVal := 123
+    afterEncode = convertor.ToRawUrlBase64(intVal)
+    fmt.Println(afterEncode)
+
+    mapVal := map[string]interface{}{"a": "hi", "b": 2, "c": struct {
+        A string
+        B int
+    }{"hello", 3}}
+    afterEncode = convertor.ToRawUrlBase64(mapVal)
+    fmt.Println(afterEncode)
+
+    floatVal := 123.456
+    afterEncode = convertor.ToRawUrlBase64(floatVal)
+    fmt.Println(afterEncode)
+
+    boolVal := true
+    afterEncode = convertor.ToRawStdBase64(boolVal)
+    fmt.Println(afterEncode)
+
+    errVal := errors.New("err")
+    afterEncode = convertor.ToRawStdBase64(errVal)
+    fmt.Println(afterEncode)
+
+    // Output:
+    // aGVsbG8
+    // aGVsbG8
+    // MTIz
+    // eyJhIjoiaGkiLCJiIjoyLCJjIjp7IkEiOiJoZWxsbyIsIkIiOjN9fQ
+    // MTIzLjQ1Ng
+    // dHJ1ZQ
+    // ZXJy
+}
+```
+
+### <span id="ToBigInt">ToBigInt</span>
+
+<p>Convert value to bigInt.</p>
+
+<b>Signature:</b>
+
+```go
+func ToBigInt(v interface{}) (*big.Int, error)
+```
+
+<b>Example:</b>
+
+```go
+package main
+
+import (
+    "fmt"
+    "github.com/duke-git/lancet/convertor"
+)
+
+func main() {
+    n := 9876543210
+    bigInt, _ := convertor.ToBigInt(n)
+
+    fmt.Println(bigInt)
+    // Output:
+    // 9876543210
 }
 ```

docs/convertor_zh-CN.md

@@ -1,5 +1,6 @@
 # Convertor
-convertor转换器包支持一些常见的数据类型转换
+
+convertor 转换器包支持一些常见的数据类型转换
 
 <div STYLE="page-break-after: always;"></div>
 
@@ -21,28 +22,37 @@ import (
 
 ## 目录
 
-- [ColorHexToRGB](#ColorHexToRGB)
-- [ColorRGBToHex](#ColorRGBToHex)
-- [ToBool](#ToBool)
-- [ToBytes](#ToBytes)
-- [ToChar](#ToChar)
-- [ToChannel](#ToChannel)
-- [ToFloat](#ToFloat)
-- [ToInt](#ToInt)
-- [ToJson](#ToJson)
-- [ToString](#ToString)
-- [StructToMap](#StructToMap)
-- [EncodeByte](#EncodeByte)
-- [DecodeByte](#DecodeByte)
-- [DeepClone](#DeepClone)
+-   [ColorHexToRGB](#ColorHexToRGB)
+-   [ColorRGBToHex](#ColorRGBToHex)
+-   [ToBool](#ToBool)
+-   [ToBytes](#ToBytes)
+-   [ToChar](#ToChar)
+-   [ToChannel](#ToChannel)
+-   [ToFloat](#ToFloat)
+-   [ToInt](#ToInt)
+-   [ToJson](#ToJson)
+-   [ToString](#ToString)
+-   [StructToMap](#StructToMap)
+-   [MapToStruct](#MapToStruct)
+-   [EncodeByte](#EncodeByte)
+-   [DecodeByte](#DecodeByte)
+-   [DeepClone](#DeepClone)
+-   [CopyProperties](#CopyProperties)
+-   [ToInterface](#ToInterface)
+-   [Utf8ToGbk](#Utf8ToGbk)
+-   [GbkToUtf8](#GbkToUtf8)
+-   [ToStdBase64](#ToStdBase64)
+-   [ToUrlBase64](#ToUrlBase64)
+-   [ToRawStdBase64](#ToRawStdBase64)
+-   [ToRawUrlBase64](#ToRawUrlBase64)
+-   [ToBigInt](#ToBigInt)
 
 <div STYLE="page-break-after: always;"></div>
 
 ## 文档
 
-
-
 ### <span id="ColorHexToRGB">ColorHexToRGB</span>
+
 <p>颜色值十六进制转rgb</p>
 
 <b>函数签名:</b>
@@ -50,6 +60,7 @@ import (
 ```go
 func ColorHexToRGB(colorHex string) (red, green, blue int)
 ```
+
 <b>列子:</b>
 
 ```go
@@ -67,8 +78,6 @@ func main() {
 }
 ```
 
-
-
 ### <span id="ColorRGBToHex">ColorRGBToHex</span>
 
 <p>颜色值rgb转十六进制</p>
@@ -78,6 +87,7 @@ func main() {
 ```go
 func ColorRGBToHex(red, green, blue int) string
 ```
+
 <b>列子:</b>
 
 ```go
@@ -98,8 +108,6 @@ func main() {
 }
 ```
 
-
-
 ### <span id="ToBool">ToBool</span>
 
 <p>字符串转布尔类型，使用strconv.ParseBool</p>
@@ -109,6 +117,7 @@ func main() {
 ```go
 func ToBool(s string) (bool, error)
 ```
+
 <b>列子:</b>
 
 ```go
@@ -134,8 +143,6 @@ func main() {
 }
 ```
 
-
-
 ### <span id="ToBytes">ToBytes</span>
 
 <p>interface转字节切片.</p>
@@ -145,6 +152,7 @@ func main() {
 ```go
 func ToBytes(data interface{}) ([]byte, error)
 ```
+
 <b>列子:</b>
 
 ```go
@@ -164,8 +172,6 @@ func main() {
 }
 ```
 
-
-
 ### <span id="ToChar">ToChar</span>
 
 <p>字符串转字符切片</p>
@@ -175,6 +181,7 @@ func main() {
 ```go
 func ToChar(s string) []string
 ```
+
 <b>列子:</b>
 
 ```go
@@ -197,8 +204,6 @@ func main() {
 }
 ```
 
-
-
 ### <span id="ToChannel">ToChannel</span>
 
 <p>将切片转为只读channel</p>
@@ -208,6 +213,7 @@ func main() {
 ```go
 func ToChannel(array []interface{}) <-chan interface{}
 ```
+
 <b>例子:</b>
 
 ```go
@@ -215,7 +221,7 @@ package main
 
 import (
     "fmt"
-    "github.com/duke-git/lancet/v2/convertor"
+    "github.com/duke-git/lancet/convertor"
 )
 
 func main() {
@@ -235,8 +241,6 @@ func main() {
 }
 ```
 
-
-
 ### <span id="ToFloat">ToFloat</span>
 
 <p>将interface转成float64类型，如果参数无法转换，会返回0和error</p>
@@ -246,6 +250,7 @@ func main() {
 ```go
 func ToFloat(value interface{}) (float64, error)
 ```
+
 <b>列子:</b>
 
 ```go
@@ -268,8 +273,6 @@ func main() {
 }
 ```
 
-
-
 ### <span id="ToInt">ToInt</span>
 
 <p>将interface转成intt64类型，如果参数无法转换，会返回0和error</p>
@@ -279,6 +282,7 @@ func main() {
 ```go
 func ToInt(value interface{}) (int64, error)
 ```
+
 <b>例子:</b>
 
 ```go
@@ -301,8 +305,6 @@ func main() {
 }
 ```
 
-
-
 ### <span id="ToJson">ToJson</span>
 
 <p>将interface转成json字符串，如果参数无法转换，会返回""和error</p>
@@ -312,6 +314,7 @@ func main() {
 ```go
 func ToJson(value interface{}) (string, error)
 ```
+
 <b>列子:</b>
 
 ```go
@@ -329,8 +332,6 @@ func main() {
 }
 ```
 
-
-
 ### <span id="ToString">ToString</span>
 
 <p>将interface转成字符串</p>
@@ -340,6 +341,7 @@ func main() {
 ```go
 func ToString(value interface{}) string
 ```
+
 <b>例子:</b>
 
 ```go
@@ -357,8 +359,6 @@ func main() {
 }
 ```
 
-
-
 ### <span id="StructToMap">StructToMap</span>
 
 <p>将struct转成map，只会转换struct中可导出的字段。struct中导出字段需要设置json tag标记</p>
@@ -368,6 +368,7 @@ func main() {
 ```go
 func StructToMap(value interface{}) (map[string]interface{}, error)
 ```
+
 <b>列子:</b>
 
 ```go
@@ -393,6 +394,58 @@ func main() {
 }
 ```
 
+### <span id="MapToStruct">MapToStruct</span>
+
+<p>将map转成struct，struct中导出字段需要设置json tag标记</p>
+
+<b>函数签名:</b>
+
+```go
+func MapToStruct(m map[string]interface{}, structObj interface{}) error
+```
+
+<b>Example:</b>
+
+```go
+package main
+
+import (
+    "fmt"
+    "github.com/duke-git/lancet/convertor"
+)
+
+func main() {
+    type Address struct {
+        Street string `json:"street"`
+        Number int    `json:"number"`
+    }
+
+    type Person struct {
+        Name  string   `json:"name"`
+        Age   int      `json:"age"`
+        Phone string   `json:"phone"`
+        Addr  *Address `json:"address"`
+    }
+
+    m := map[string]interface{}{
+        "name":  "Nothin",
+        "age":   28,
+        "phone": "123456789",
+        "address": map[string]interface{}{
+            "street": "test",
+            "number": 1,
+        },
+    }
+
+    var p Person
+    err := MapToStruct(m, &p)
+    if err != nil {
+        return
+    }
+
+    fmt.Printf("p.Addr.Street: %s", p.Addr.Street) //test
+}
+```
 
 ### <span id="EncodeByte">EncodeByte</span>
 
@@ -401,8 +454,9 @@ func main() {
 <b>函数签名:</b>
 
 ```go
-func EncodeByte(data any) ([]byte, error)
+func EncodeByte(data interface{}) ([]byte, error)
 ```
+
 <b>例子:</b>
 
 ```go
@@ -410,7 +464,7 @@ package main
 
 import (
     "fmt"
-    "github.com/duke-git/lancet/v2/convertor"
+    "github.com/duke-git/lancet/convertor"
 )
 
 func main() {
@@ -419,8 +473,6 @@ func main() {
 }
 ```
 
-
-
 ### <span id="DecodeByte">DecodeByte</span>
 
 <p>解码字节切片到目标对象，目标对象需要传入一个指针实例子</p>
@@ -428,8 +480,9 @@ func main() {
 <b>函数签名:</b>
 
 ```go
-func DecodeByte(data []byte, target any) error
+func DecodeByte(data []byte, target interface{}) error
 ```
+
 <b>例子:</b>
 
 ```go
@@ -437,18 +490,17 @@ package main
 
 import (
     "fmt"
-    "github.com/duke-git/lancet/v2/convertor"
+    "github.com/duke-git/lancet/convertor"
 )
 
 func main() {
     var result string
-	byteData := []byte{6, 12, 0, 3, 97, 98, 99}
-	convertor.DecodeByte(byteData, &result)
+    byteData := []byte{6, 12, 0, 3, 97, 98, 99}
+    convertor.DecodeByte(byteData, &result)
     fmt.Println(result) //"abc"
 }
 ```
 
-
 ### <span id="DeepClone">DeepClone</span>
 
 <p>创建一个传入值的深拷贝, 无法克隆结构体的非导出字段。</p>
@@ -456,7 +508,7 @@ func main() {
 <b>函数签名:</b>
 
 ```go
-func DeepClone[T any](src T) T
+func DeepClone[T interface{}](src T) T
 ```
 
 <b>示例:</b>
@@ -471,44 +523,525 @@ import (
 
 func main() {
     type Struct struct {
-		Str        string
-		Int        int
-		Float      float64
-		Bool       bool
-		Nil        interface{}
-		unexported string
-	}
+        Str        string
+        Int        int
+        Float      float64
+        Bool       bool
+        Nil        interface{}
+        unexported string
+    }
 
-	cases := []interface{}{
-		true,
-		1,
-		0.1,
-		map[string]int{
-			"a": 1,
-			"b": 2,
-		},
-		&Struct{
-			Str:   "test",
-			Int:   1,
-			Float: 0.1,
-			Bool:  true,
-			Nil:   nil,
-			// unexported: "can't be cloned",
-		},
-	}
+    cases := []interface{}{
+        true,
+        1,
+        0.1,
+        map[string]int{
+            "a": 1,
+            "b": 2,
+        },
+        &Struct{
+            Str:   "test",
+            Int:   1,
+            Float: 0.1,
+            Bool:  true,
+            Nil:   nil,
+            // unexported: "can't be cloned",
+        },
+    }
 
-	for _, item := range cases {
-		cloned := convertor.DeepClone(item)
+    for _, item := range cases {
+        cloned := convertor.DeepClone(item)
 
-		isPointerEqual := &cloned == &item
-		fmt.Println(cloned, isPointerEqual)
-	}
+        isPointerEqual := &cloned == &item
+        fmt.Println(cloned, isPointerEqual)
+    }
 
-	// Output:
-	// true false
-	// 1 false
-	// 0.1 false
-	// map[a:1 b:2] false
-	// &{test 1 0.1 true <nil> } false
+    // Output:
+    // true false
+    // 1 false
+    // 0.1 false
+    // map[a:1 b:2] false
+    // &{test 1 0.1 true <nil> } false
+}
+```
+
+
+### <span id="CopyProperties">CopyProperties</span>
+
+<p>拷贝不同结构体之间的同名字段。使用json.Marshal序列化，需要设置dst和src struct字段的json tag。</p>
+
+<b>函数签名:</b>
+
+```go
+func CopyProperties(dst, src interface{}) error
+```
+
+<b>示例:</b>
+
+```go
+package main
+
+import (
+    "fmt"
+    "github.com/duke-git/lancet/convertor"
+)
+
+func main() {
+    type Disk struct {
+        Name    string  `json:"name"`
+        Total   string  `json:"total"`
+        Used    string  `json:"used"`
+        Percent float64 `json:"percent"`
+    }
+
+    type DiskVO struct {
+        Name    string  `json:"name"`
+        Total   string  `json:"total"`
+        Used    string  `json:"used"`
+        Percent float64 `json:"percent"`
+    }
+
+    type Indicator struct {
+        Id      string    `json:"id"`
+        Ip      string    `json:"ip"`
+        UpTime  string    `json:"upTime"`
+        LoadAvg string    `json:"loadAvg"`
+        Cpu     int       `json:"cpu"`
+        Disk    []Disk    `json:"disk"`
+        Stop    chan bool `json:"-"`
+    }
+
+    type IndicatorVO struct {
+        Id      string   `json:"id"`
+        Ip      string   `json:"ip"`
+        UpTime  string   `json:"upTime"`
+        LoadAvg string   `json:"loadAvg"`
+        Cpu     int64    `json:"cpu"`
+        Disk    []DiskVO `json:"disk"`
+    }
+
+    indicator := &Indicator{Id: "001", Ip: "127.0.0.1", Cpu: 1, Disk: []Disk{
+        {Name: "disk-001", Total: "100", Used: "1", Percent: 10},
+        {Name: "disk-002", Total: "200", Used: "1", Percent: 20},
+        {Name: "disk-003", Total: "300", Used: "1", Percent: 30},
+    }}
+
+    indicatorVO := IndicatorVO{}
+
+    err := convertor.CopyProperties(&indicatorVO, indicator)
+
+    if err != nil {
+        return
+    }
+
+    fmt.Println(indicatorVO.Id)
+    fmt.Println(indicatorVO.Ip)
+    fmt.Println(len(indicatorVO.Disk))
+
+    // Output:
+    // 001
+    // 127.0.0.1
+    // 3
+}
+```
+
+### <span id="ToInterface">ToInterface</span>
+
+<p>将反射值转换成对应的interface类型。</p>
+
+<b>函数签名:</b>
+
+```go
+func ToInterface(v reflect.Value) (value interface{}, ok bool)
+```
+
+<b>示例:</b>
+
+```go
+package main
+
+import (
+    "fmt"
+    "github.com/duke-git/lancet/convertor"
+)
+
+func main() {
+    val := reflect.ValueOf("abc")
+    iVal, ok := convertor.ToInterface(val)
+
+    fmt.Printf("%T\n", iVal)
+    fmt.Printf("%v\n", iVal)
+    fmt.Println(ok)
+
+    // Output:
+    // string
+    // abc
+    // true    
+}
+```
+
+### <span id="Utf8ToGbk">Utf8ToGbk</span>
+
+<p>utf8编码转GBK编码。</p>
+
+<b>函数签名:</b>
+
+```go
+func Utf8ToGbk(bs []byte) ([]byte, error)
+```
+
+<b>示例:</b>
+
+```go
+package main
+
+import (
+    "fmt"
+    "github.com/duke-git/lancet/convertor"
+    "github.com/duke-git/lancet/validator"
+)
+
+func main() {
+    utf8Data := []byte("hello")
+    gbkData, _ := convertor.Utf8ToGbk(utf8Data)
+
+    fmt.Println(utf8.Valid(utf8Data))
+    fmt.Println(validator.IsGBK(gbkData))
+
+    // Output:
+    // true
+    // true   
+}
+```
+
+### <span id="GbkToUtf8">GbkToUtf8</span>
+
+<p>GBK编码转utf8编码。</p>
+
+<b>函数签名:</b>
+
+```go
+func GbkToUtf8(bs []byte) ([]byte, error)
+```
+
+<b>示例:</b>
+
+```go
+package main
+
+import (
+    "fmt"
+    "github.com/duke-git/lancet/convertor"
+)
+
+func main() {
+    gbkData, _ := convertor.Utf8ToGbk([]byte("hello"))
+    utf8Data, _ := convertor.GbkToUtf8(gbkData)
+
+    fmt.Println(utf8.Valid(utf8Data))
+    fmt.Println(string(utf8Data))
+
+    // Output:
+    // true
+    // hello   
+}
+```
+
+### <span id="ToStdBase64">ToStdBase64</span>
+
+<p>将值转换为StdBase64编码的字符串。error类型的数据也会把error的原因进行编码，复杂的结构会转为JSON格式的字符串</p>
+
+<b>函数签名:</b>
+
+```go
+func ToStdBase64(value interface{}) string
+```
+
+<b>示例:</b>
+
+```go
+package main
+
+import (
+    "fmt"
+    "github.com/duke-git/lancet/convertor"
+)
+
+func main() {
+    afterEncode := convertor.ToStdBase64(nil)
+    fmt.Println(afterEncode)
+
+    afterEncode = convertor.ToStdBase64("")
+    fmt.Println(afterEncode)
+
+    stringVal := "hello"
+    afterEncode = convertor.ToStdBase64(stringVal)
+    fmt.Println(afterEncode)
+
+    byteSliceVal := []byte("hello")
+    afterEncode = convertor.ToStdBase64(byteSliceVal)
+    fmt.Println(afterEncode)
+
+    intVal := 123
+    afterEncode = convertor.ToStdBase64(intVal)
+    fmt.Println(afterEncode)
+
+    mapVal := map[string]interface{}{"a": "hi", "b": 2, "c": struct {
+        A string
+        B int
+    }{"hello", 3}}
+    afterEncode = convertor.ToStdBase64(mapVal)
+    fmt.Println(afterEncode)
+
+    floatVal := 123.456
+    afterEncode = convertor.ToStdBase64(floatVal)
+    fmt.Println(afterEncode)
+
+    boolVal := true
+    afterEncode = convertor.ToStdBase64(boolVal)
+    fmt.Println(afterEncode)
+
+    errVal := errors.New("err")
+    afterEncode = convertor.ToStdBase64(errVal)
+    fmt.Println(afterEncode)
+
+    // Output:
+    //
+    //
+    // aGVsbG8=
+    // aGVsbG8=
+    // MTIz
+    // eyJhIjoiaGkiLCJiIjoyLCJjIjp7IkEiOiJoZWxsbyIsIkIiOjN9fQ==
+    // MTIzLjQ1Ng==
+    // dHJ1ZQ==
+    // ZXJy
+}
+
+```
+
+### <span id="ToUrlBase64">ToUrlBase64</span>
+
+<p>值转换为 ToUrlBase64 编码的字符串。error 类型的数据也会把 error 的原因进行编码，复杂的结构会转为 JSON 格式的字符串</p>
+
+<b>函数签名:</b>
+
+```go
+func ToUrlBase64(value interface{}) string
+```
+
+<b>示例:</b>
+
+```go
+package main
+
+import (
+    "fmt"
+    "github.com/duke-git/lancet/convertor"
+)
+
+func main() {
+    afterEncode := convertor.ToUrlBase64(nil)
+    fmt.Println(afterEncode)
+
+
+    stringVal := "hello"
+    afterEncode = convertor.ToUrlBase64(stringVal)
+    fmt.Println(afterEncode)
+
+    byteSliceVal := []byte("hello")
+    afterEncode = convertor.ToUrlBase64(byteSliceVal)
+    fmt.Println(afterEncode)
+
+    intVal := 123
+    afterEncode = convertor.ToUrlBase64(intVal)
+    fmt.Println(afterEncode)
+
+    mapVal := map[string]interface{}{"a": "hi", "b": 2, "c": struct {
+        A string
+        B int
+    }{"hello", 3}}
+    afterEncode = convertor.ToUrlBase64(mapVal)
+    fmt.Println(afterEncode)
+
+    floatVal := 123.456
+    afterEncode = convertor.ToUrlBase64(floatVal)
+    fmt.Println(afterEncode)
+
+    boolVal := true
+    afterEncode = convertor.ToUrlBase64(boolVal)
+    fmt.Println(afterEncode)
+
+    errVal := errors.New("err")
+    afterEncode = convertor.ToUrlBase64(errVal)
+    fmt.Println(afterEncode)
+
+    // Output:
+    //
+    // aGVsbG8=
+    // aGVsbG8=
+    // MTIz
+    // eyJhIjoiaGkiLCJiIjoyLCJjIjp7IkEiOiJoZWxsbyIsIkIiOjN9fQ==
+    // MTIzLjQ1Ng==
+    // dHJ1ZQ==
+    // ZXJy
+}
+
+```
+
+### <span id="ToRawStdBase64">ToRawStdBase64</span>
+
+<p>值转换为 ToRawStdBase64 编码的字符串。error 类型的数据也会把 error 的原因进行编码，复杂的结构会转为 JSON 格式的字符串</p>
+
+<b>函数签名:</b>
+
+```go
+func ToRawStdBase64(value interface{}) string
+```
+
+<b>示例:</b>
+
+```go
+package main
+
+import (
+    "fmt"
+    "github.com/duke-git/lancet/convertor"
+)
+
+func main() {
+
+    stringVal := "hello"
+    afterEncode = convertor.ToRawStdBase64(stringVal)
+    fmt.Println(afterEncode)
+
+    byteSliceVal := []byte("hello")
+    afterEncode = convertor.ToRawStdBase64(byteSliceVal)
+    fmt.Println(afterEncode)
+
+    intVal := 123
+    afterEncode = convertor.ToRawStdBase64(intVal)
+    fmt.Println(afterEncode)
+
+    mapVal := map[string]interface{}{"a": "hi", "b": 2, "c": struct {
+        A string
+        B int
+    }{"hello", 3}}
+    afterEncode = convertor.ToRawStdBase64(mapVal)
+    fmt.Println(afterEncode)
+
+    floatVal := 123.456
+    afterEncode = convertor.ToRawStdBase64(floatVal)
+    fmt.Println(afterEncode)
+
+    boolVal := true
+    afterEncode = convertor.ToRawStdBase64(boolVal)
+    fmt.Println(afterEncode)
+
+    errVal := errors.New("err")
+    afterEncode = convertor.ToRawStdBase64(errVal)
+    fmt.Println(afterEncode)
+
+    // Output:
+    // aGVsbG8
+    // aGVsbG8
+    // MTIz
+    // eyJhIjoiaGkiLCJiIjoyLCJjIjp7IkEiOiJoZWxsbyIsIkIiOjN9fQ
+    // MTIzLjQ1Ng
+    // dHJ1ZQ
+    // ZXJy
+}
+```
+
+### <span id="ToRawUrlBase64">ToRawUrlBase64</span>
+
+<p>值转换为 ToRawUrlBase64 编码的字符串。error 类型的数据也会把 error 的原因进行编码，复杂的结构会转为 JSON 格式的字符串</p>
+
+<b>函数签名:</b>
+
+```go
+func ToRawUrlBase64(value interface{}) string
+```
+
+<b>示例:</b>
+
+```go
+package main
+
+import (
+    "fmt"
+    "github.com/duke-git/lancet/convertor"
+)
+
+func main() {
+
+    stringVal := "hello"
+    afterEncode = convertor.ToRawUrlBase64(stringVal)
+    fmt.Println(afterEncode)
+
+    byteSliceVal := []byte("hello")
+    afterEncode = convertor.ToRawUrlBase64(byteSliceVal)
+    fmt.Println(afterEncode)
+
+    intVal := 123
+    afterEncode = convertor.ToRawUrlBase64(intVal)
+    fmt.Println(afterEncode)
+
+    mapVal := map[string]interface{}{"a": "hi", "b": 2, "c": struct {
+        A string
+        B int
+    }{"hello", 3}}
+    afterEncode = convertor.ToRawUrlBase64(mapVal)
+    fmt.Println(afterEncode)
+
+    floatVal := 123.456
+    afterEncode = convertor.ToRawUrlBase64(floatVal)
+    fmt.Println(afterEncode)
+
+    boolVal := true
+    afterEncode = convertor.ToRawStdBase64(boolVal)
+    fmt.Println(afterEncode)
+
+    errVal := errors.New("err")
+    afterEncode = convertor.ToRawStdBase64(errVal)
+    fmt.Println(afterEncode)
+
+    // Output:
+    // aGVsbG8
+    // aGVsbG8
+    // MTIz
+    // eyJhIjoiaGkiLCJiIjoyLCJjIjp7IkEiOiJoZWxsbyIsIkIiOjN9fQ
+    // MTIzLjQ1Ng
+    // dHJ1ZQ
+    // ZXJy
+}
+```
+
+### <span id="ToBigInt">ToBigInt</span>
+
+<p>将整数值转换为bigInt。</p>
+
+<b>函数签名:</b>
+
+```go
+func ToBigInt(v interface{}) (*big.Int, error)
+```
+
+<b>示例:</b>
+
+```go
+package main
+
+import (
+    "fmt"
+    "github.com/duke-git/lancet/convertor"
+)
+
+func main() {
+    n := 9876543210
+    bigInt, _ := convertor.ToBigInt(n)
+
+    fmt.Println(bigInt)
+    // Output:
+    // 9876543210
 }
 ```

docs/fileutil.md

@@ -1,4 +1,5 @@
 # Fileutil
+
 Package fileutil implements some basic functions for file operations.
 
 <div STYLE="page-break-after: always;"></div>
@@ -10,6 +11,7 @@ Package fileutil implements some basic functions for file operations.
 <div STYLE="page-break-after: always;"></div>
 
 ## Usage:
+
 ```go
 import (
     "github.com/duke-git/lancet/fileutil"
@@ -19,29 +21,41 @@ import (
 <div STYLE="page-break-after: always;"></div>
 
 ## Index
-- [ClearFile](#ClearFile)
-- [CreateFile](#CreateFile)
-- [CreateDir](#CreateDir)
-- [CopyFile](#CopyFile)
-- [FileMode](#FileMode)
-- [MiMeType](#MiMeType)
-- [IsExist](#IsExist)
-- [IsLink](#IsLink)
-- [IsDir](#IsDir)
-- [ListFileNames](#ListFileNames)
-- [RemoveFile](#RemoveFile)
-- [ReadFileToString](#ReadFileToString)
-- [ReadFileByLine](#ReadFileByLine)
-- [Zip](#Zip)
-- [UnZip](#UnZip)
+
+-   [ClearFile](#ClearFile)
+-   [CreateFile](#CreateFile)
+-   [CreateDir](#CreateDir)
+-   [CopyFile](#CopyFile)
+-   [FileMode](#FileMode)
+-   [MiMeType](#MiMeType)
+-   [IsExist](#IsExist)
+-   [IsLink](#IsLink)
+-   [IsDir](#IsDir)
+-   [ListFileNames](#ListFileNames)
+-   [RemoveFile](#RemoveFile)
+-   [ReadFileToString](#ReadFileToString)
+-   [ReadFileByLine](#ReadFileByLine)
+-   [Zip](#Zip)
+-   [UnZip](#UnZip)
+-   [ZipAppendEntry](#ZipAppendEntry)
+-   [CurrentPath](#CurrentPath)
+-   [IsZipFile](#IsZipFile)
+-   [FileSize](#FileSize)
+-   [MTime](#MTime)
+-   [Sha](#Sha)
+-   [ReadCsvFile](#ReadCsvFile)
+-   [WriteCsvFile](#WriteCsvFile)
+-   [WriteMapsToCsv](#WriteMapsToCsv)
+-   [WriteStringToFile](#WriteStringToFile)
+-   [WriteBytesToFile](#WriteBytesToFile)
+-   [ReadFile](#ReadFile)
 
 <div STYLE="page-break-after: always;"></div>
 
 ## Documentation
 
-
-
 ### <span id="ClearFile">ClearFile</span>
+
 <p>Clear the file content, write empty string to the file.</p>
 
 <b>Signature:</b>
@@ -49,6 +63,7 @@ import (
 ```go
 func ClearFile(path string) error
 ```
+
 <b>Example:</b>
 
 ```go
@@ -67,9 +82,8 @@ func main() {
 }
 ```
 
-
-
 ### <span id="CreateDir">CreateDir</span>
+
 <p>Create directory in absolute path. param `absPath` like /a/, /a/b/.</p>
 
 <b>Signature:</b>
@@ -77,6 +91,7 @@ func main() {
 ```go
 func CreateDir(absPath string) error
 ```
+
 <b>Example:</b>
 
 ```go
@@ -93,9 +108,8 @@ func main() {
 }
 ```
 
-
-
 ### <span id="CreateFile">CreateFile</span>
+
 <p>Create file in path. return true if create succeed.</p>
 
 <b>Signature:</b>
@@ -103,6 +117,7 @@ func main() {
 ```go
 func CreateFile(path string) bool
 ```
+
 <b>Example:</b>
 
 ```go
@@ -119,8 +134,8 @@ func main() {
 }
 ```
 
-
 ### <span id="CopyFile">CopyFile</span>
+
 <p>Copy src file to dest file. If dest file exist will overwrite it.</p>
 
 <b>Signature:</b>
@@ -128,6 +143,7 @@ func main() {
 ```go
 func CopyFile(srcFilePath string, dstFilePath string) error
 ```
+
 <b>Example:</b>
 
 ```go
@@ -140,15 +156,14 @@ import (
 
 func main() {
     err := fileutil.CopyFile("./test.txt", "./test_copy.txt")
-	if err != nil {
-		fmt.Println(err)
-	}
+    if err != nil {
+        fmt.Println(err)
+    }
 }
 ```
 
-
-
 ### <span id="FileMode">FileMode</span>
+
 <p>Return file mode infomation.</p>
 
 <b>Signature:</b>
@@ -156,6 +171,7 @@ func main() {
 ```go
 func FileMode(path string) (fs.FileMode, error)
 ```
+
 <b>Example:</b>
 
 ```go
@@ -168,16 +184,15 @@ import (
 
 func main() {
     mode, err := fileutil.FileMode("./test.txt")
-	if err != nil {
-		fmt.Println(err)
-	}
+    if err != nil {
+        fmt.Println(err)
+    }
     fmt.Println(mode)
 }
 ```
 
-
-
 ### <span id="MiMeType">MiMeType</span>
+
 <p>Get file mime type, 'file' param's type should be string or *os.File.</p>
 
 <b>Signature:</b>
@@ -185,6 +200,7 @@ func main() {
 ```go
 func MiMeType(file interface{}) string
 ```
+
 <b>Example:</b>
 
 ```go
@@ -206,10 +222,8 @@ func main() {
 }
 ```
 
-
-
-
 ### <span id="IsExist">IsExist</span>
+
 <p>Checks if a file or directory exists.</p>
 
 <b>Signature:</b>
@@ -217,6 +231,7 @@ func main() {
 ```go
 func IsExist(path string) bool
 ```
+
 <b>Example:</b>
 
 ```go
@@ -234,9 +249,8 @@ func main() {
 }
 ```
 
-
-
 ### <span id="IsLink">IsLink</span>
+
 <p>Checks if a file is symbol link or not.</p>
 
 <b>Signature:</b>
@@ -244,6 +258,7 @@ func main() {
 ```go
 func IsLink(path string) bool
 ```
+
 <b>Example:</b>
 
 ```go
@@ -260,16 +275,16 @@ func main() {
 }
 ```
 
-
-
 ### <span id="IsDir">IsDir</span>
+
 <p>Checks if the path is directy or not.</p>
 
 <b>Signature:</b>
 
 ```go
-func IsDir(path string) bool 
+func IsDir(path string) bool
 ```
+
 <b>Example:</b>
 
 ```go
@@ -289,9 +304,8 @@ func main() {
 }
 ```
 
-
-
 ### <span id="ListFileNames">ListFileNames</span>
+
 <p>List all file names in given path.</p>
 
 <b>Signature:</b>
@@ -299,6 +313,7 @@ func main() {
 ```go
 func ListFileNames(path string) ([]string, error)
 ```
+
 <b>Example:</b>
 
 ```go
@@ -315,9 +330,8 @@ func main() {
 }
 ```
 
-
-
 ### <span id="RemoveFile">RemoveFile</span>
+
 <p>Remove the file of path.</p>
 
 <b>Signature:</b>
@@ -325,6 +339,7 @@ func main() {
 ```go
 func RemoveFile(path string) error
 ```
+
 <b>Example:</b>
 
 ```go
@@ -338,13 +353,13 @@ import (
 func main() {
     err := fileutil.RemoveFile("./test.txt")
     if err != nil {
-		fmt.Println(err)
-	}
+        fmt.Println(err)
+    }
 }
 ```
 
-
 ### <span id="ReadFileToString">ReadFileToString</span>
+
 <p>Return string of file content.</p>
 
 <b>Signature:</b>
@@ -352,6 +367,7 @@ func main() {
 ```go
 func ReadFileToString(path string) (string, error)
 ```
+
 <b>Example:</b>
 
 ```go
@@ -365,19 +381,18 @@ import (
 
 func main() {
     path := "./test.txt"
-	fileutil.CreateFile(path)
+    fileutil.CreateFile(path)
 
-	f, _ := os.OpenFile(path, os.O_WRONLY|os.O_TRUNC, 0777)
-	f.WriteString("hello world")
+    f, _ := os.OpenFile(path, os.O_WRONLY|os.O_TRUNC, 0777)
+    f.WriteString("hello world")
 
-	content, _ := fileutil.ReadFileToString(path)
+    content, _ := fileutil.ReadFileToString(path)
     fmt.Println(content) //hello world
 }
 ```
 
-
-
 ### <span id="ReadFileByLine">ReadFileByLine</span>
+
 <p>Read file line by line, and return slice of lines</p>
 
 <b>Signature:</b>
@@ -385,6 +400,7 @@ func main() {
 ```go
 func ReadFileByLine(path string)([]string, error)
 ```
+
 <b>Example:</b>
 
 ```go
@@ -398,20 +414,19 @@ import (
 
 func main() {
     path := "./text.txt"
-	fileutil.CreateFile(path)
+    fileutil.CreateFile(path)
 
-	f, _ := os.OpenFile(path, os.O_WRONLY|os.O_TRUNC, 0777)
-	defer f.Close()
-	f.WriteString("hello\nworld")
+    f, _ := os.OpenFile(path, os.O_WRONLY|os.O_TRUNC, 0777)
+    defer f.Close()
+    f.WriteString("hello\nworld")
 
-	contents, _ := fileutil.ReadFileByLine(path)
+    contents, _ := fileutil.ReadFileByLine(path)
     fmt.Println(contents) //[]string{"hello", "world"}
 }
 ```
 
-
-
 ### <span id="Zip">Zip</span>
+
 <p>Create a zip file of fpath, fpath could be a file or a directory.</p>
 
 <b>Signature:</b>
@@ -419,6 +434,7 @@ func main() {
 ```go
 func Zip(fpath string, destPath string) error
 ```
+
 <b>Example:</b>
 
 ```go
@@ -430,17 +446,15 @@ import (
 )
 
 func main() {
-	err := fileutil.Zip("./test.txt", "./test.zip")
+    err := fileutil.Zip("./test.txt", "./test.zip")
     if err != nil {
         fmt.Println(err)
     }
 }
 ```
 
-
-
-
 ### <span id="UnZip">UnZip</span>
+
 <p>Unzip the file and save it to dest path.</p>
 
 <b>Signature:</b>
@@ -448,6 +462,7 @@ func main() {
 ```go
 func UnZip(zipFile string, destPath string) error
 ```
+
 <b>Example:</b>
 
 ```go
@@ -459,14 +474,451 @@ import (
 )
 
 func main() {
-	err := fileutil.Zip("./test.zip", "./unzip/test.txt")
+    err := fileutil.Zip("./test.zip", "./unzip/test.txt")
     if err != nil {
         fmt.Println(err)
     }
 }
 ```
 
+### <span id="ZipAppendEntry">ZipAppendEntry</span>
+
+<p>Append a single file or directory by fpath to an existing zip file.</p>
+
+<b>Signature:</b>
+
+```go
+func ZipAppendEntry(fpath string, destPath string) error
+```
+
+<b>Example:</b>
+
+```go
+package main
+
+import (
+    "fmt"
+    "github.com/duke-git/lancet/fileutil"
+)
+
+func main() {
+    err := fileutil.ZipAppendEntry("./test.txt", "./test.zip")
+    if err != nil {
+        fmt.Println(err)
+    }
+}
+```
+
+### <span id="CurrentPath">CurrentPath</span>
+
+<p>return current absolute path.</p>
+
+<b>Signature:</b>
+
+```go
+func CurrentPath() string
+```
+
+<b>Example:</b>
+
+```go
+package main
+
+import (
+    "fmt"
+    "github.com/duke-git/lancet/fileutil"
+)
+
+func main() {
+    absPath := CurrentPath()
+    fmt.Println(absPath)
+}
+```
+
+### <span id="IsZipFile">IsZipFile</span>
+
+<p>Checks if file is zip file or not.</p>
+
+<b>Signature:</b>
+
+```go
+func IsZipFile(filepath string) bool
+```
+
+<b>Example:</b>
+
+```go
+package main
+
+import (
+    "fmt"
+    "github.com/duke-git/lancet/fileutil"
+)
+
+func main() {
+    isZip := IsZipFile("./zipfile.zip")
+    fmt.Println(isZip)
+}
+```
+
+### <span id="FileSize">FileSize</span>
+
+<p>Returns file size in bytes.</p>
+
+<b>Signature:</b>
+
+```go
+func FileSize(path string) (int64, error)
+```
+
+<b>Example:</b>
+
+```go
+package main
+
+import (
+    "fmt"
+    "github.com/duke-git/lancet/fileutil"
+)
+
+func main() {
+    size, err := fileutil.FileSize("./testdata/test.txt")
+
+    fmt.Println(size)
+    fmt.Println(err)
+
+    // Output:
+    // 20
+    // <nil>
+}
+```
+
+### <span id="MTime">MTime</span>
+
+<p>Returns file modified time(unix timestamp).</p>
+
+<b>Signature:</b>
+
+```go
+func MTime(filepath string) (int64, error)
+```
+
+<b>Example:</b>
+
+```go
+package main
+
+import (
+    "fmt"
+    "github.com/duke-git/lancet/fileutil"
+)
+
+func main() {
+    mtime, err := fileutil.MTime("./testdata/test.txt")
+
+    fmt.Println(mtime)
+    fmt.Println(err)
+
+    // Output:
+    // 1682391110
+    // <nil>
+}
+```
+
+### <span id="Sha">Sha</span>
+
+<p>returns file sha value, param `shaType` should be 1, 256 or 512.</p>
+
+<b>Signature:</b>
+
+```go
+func Sha(filepath string, shaType ...int) (string, error)
+```
+
+<b>Example:</b>
+
+```go
+package main
+
+import (
+    "fmt"
+    "github.com/duke-git/lancet/fileutil"
+)
+
+func main() {
+    sha1, err := fileutil.Sha("./testdata/test.txt", 1)
+    sha256, _ := fileutil.Sha("./testdata/test.txt", 256)
+    sha512, _ := fileutil.Sha("./testdata/test.txt", 512)
+
+    fmt.Println(sha1)
+    fmt.Println(sha256)
+    fmt.Println(sha512)
+    fmt.Println(err)
+
+    // Output:
+    // dda3cf10c5a6ff6c6659a497bf7261b287af2bc7
+    // aa6d0a3fbc3442c228d606da09e0c1dc98c69a1cac3da1909199e0266171df35
+    // d22aba2a1b7a2e2f512756255cc1c3708905646920cb1eb95e45b531ba74774dbbb89baebf1f716220eb9cf4908f1cfc5b2a01267704d9a59f59d77cab609870
+    // <nil>
+}
+```
+
+### <span id="ReadCsvFile">ReadCsvFile</span>
+
+<p>Reads file content into slice.</p>
+
+<b>Signature:</b>
+
+```go
+func ReadCsvFile(filepath string) ([][]string, error)
+```
+
+<b>Example:</b>
+
+```go
+package main
+
+import (
+    "fmt"
+    "github.com/duke-git/lancet/fileutil"
+)
+
+func main() {
+    content, err := fileutil.ReadCsvFile("./testdata/test.csv")
+
+    fmt.Println(content)
+    fmt.Println(err)
+
+    // Output:
+    // [[Bob  12  male] [Duke  14  male] [Lucy  16  female]]
+    // <nil>
+}
+```
 
 
+### <span id="WriteCsvFile">WriteCsvFile</span>
+
+<p>Write content to target csv file.</p>
+
+<b>Signature:</b>
+
+```go
+func WriteCsvFile(filepath string, records [][]string, append bool) error
+```
+
+<b>Example:</b>
+
+```go
+package main
+
+import (
+    "fmt"
+    "github.com/duke-git/lancet/fileutil"
+)
+
+func main() {
+    data := [][]string{
+        {"Lili", "22", "female"},
+        {"Jim", "21", "male"},
+    }
+    err := WriteCsvFile("./testdata/test2.csv", data, false)
+    fmt.Println(err)
+
+    content, _ := ReadCsvFile("./testdata/test2.csv")
+    fmt.Println(content)
+
+    // Output:
+    // <nil>
+    // [[Lili 22 female] [Jim 21 male]]
+}
+```
 
 
+### <span id="WriteMapsToCsv">WriteMapsToCsv</span>
+
+<p>write slice of map to csv file.</p>
+
+<b>Signature:</b>
+
+```go
+// filepath: path of the CSV file.
+// records: slice of maps to be written. the value of map should be basic type. The maps will be sorted by key in alphabeta order, then be written into csv file.
+// appendToExistingFile: If true, data will be appended to the file if it exists.
+// delimiter: Delimiter to use in the CSV file.
+// headers: order of the csv column headers, needs to be consistent with the key of the map.
+func WriteMapsToCsv(filepath string, records []map[string]interface{}, appendToExistingFile bool, delimiter rune, headers ...[]string) error
+```
+
+<b>Example:</b>
+
+```go
+package main
+
+import (
+    "fmt"
+    "github.com/duke-git/lancet/fileutil"
+)
+
+func main() {
+    fpath := "./test.csv"
+    fileutil.CreateFile(fpath)
+
+    f, _ := os.OpenFile(fpath, os.O_WRONLY|os.O_TRUNC, 0777)
+    defer f.Close()
+
+    records := []map[string]interface{}{
+        {"Name": "Lili", "Age": "22", "Gender": "female"},
+        {"Name": "Jim", "Age": "21", "Gender": "male"},
+    }
+
+    headers := []string{"Name", "Age", "Gender"}
+    err := fileutil.WriteMapsToCsv(csvFilePath, records, false, ';', headers)
+
+    if err != nil {
+        log.Fatal(err)
+    }
+
+    content, err := fileutil.ReadCsvFile(csvFilePath, ';')
+
+    fmt.Println(content)
+
+    // Output:
+    // [[Name Age Gender] [Lili 22 female] [Jim 21 male]]
+}
+```
+
+### <span id="WriteBytesToFile">WriteBytesToFile</span>
+
+<p>Writes bytes to target file.</p>
+
+<b>Signature:</b>
+
+```go
+func WriteBytesToFile(filepath string, content []byte) error
+```
+
+<b>Example:</b>
+
+```go
+package main
+
+import (
+    "fmt"
+    "github.com/duke-git/lancet/fileutil"
+)
+
+func main() {
+    filepath := "./bytes.txt"
+
+    file, err := os.Create(filepath)
+    if err != nil {
+        return
+    }
+
+    defer file.Close()
+
+    err = fileutil.WriteBytesToFile(filepath, []byte("hello"))
+    if err != nil {
+        return
+    }
+
+    content, err := fileutil.ReadFileToString(filepath)
+    if err != nil {
+        return
+    }
+
+    os.Remove(filepath)
+
+    fmt.Println(content)
+
+    // Output:
+    // hello
+}
+```
+
+### <span id="WriteStringToFile">WriteStringToFile</span>
+
+<p>Writes string to target file.</p>
+
+<b>Signature:</b>
+
+```go
+func WriteStringToFile(filepath string, content string, append bool) error
+```
+
+<b>Example:</b>
+
+```go
+package main
+
+import (
+    "fmt"
+    "github.com/duke-git/lancet/fileutil"
+)
+
+func main() {
+    filepath := "./test.txt"
+
+    file, err := os.Create(filepath)
+    if err != nil {
+        return
+    }
+
+    defer file.Close()
+
+    err = fileutil.WriteStringToFile(filepath, "hello", true)
+    if err != nil {
+        return
+    }
+
+    content, err := fileutil.ReadFileToString(filepath)
+    if err != nil {
+        return
+    }
+
+    os.Remove(filepath)
+
+    fmt.Println(content)
+
+    // Output:
+    // hello
+}
+```
+
+### <span id="ReadFile">ReadFile</span>
+
+<p>Read File/URL</p>
+
+<b>Signature:</b>
+
+```go
+func ReadFile(path string) (reader io.ReadCloser, closeFn func(), err error) 
+```
+
+<b>Example:<span style="float:right;display:inline-block;"> </span></b>
+
+```go
+package main
+
+import (
+    "fmt"
+    "github.com/duke-git/lancet/fileutil"
+)
+
+func main() {
+   reader, fn, err := ReadFile("https://httpbin.org/robots.txt")
+    if err != nil {
+        return
+    }
+    defer fn()
+
+    dat, err := io.ReadAll(reader)
+    if err != nil {
+        return
+    }
+    fmt.Println(string(dat))
+    // Output:
+    // User-agent: *
+    // Disallow: /deny
+}
+```

docs/fileutil_zh-CN.md

@@ -1,5 +1,6 @@
 # Fileutil
-fileutil包支持文件基本操作。
+
+fileutil 包支持文件基本操作。
 
 <div STYLE="page-break-after: always;"></div>
 
@@ -10,6 +11,7 @@ fileutil包支持文件基本操作。
 <div STYLE="page-break-after: always;"></div>
 
 ## 用法:
+
 ```go
 import (
     "github.com/duke-git/lancet/fileutil"
@@ -19,29 +21,41 @@ import (
 <div STYLE="page-break-after: always;"></div>
 
 ## 目录
-- [ClearFile](#ClearFile)
-- [CreateFile](#CreateFile)
-- [CreateDir](#CreateDir)
-- [CopyFile](#CopyFile)
-- [FileMode](#FileMode)
-- [MiMeType](#MiMeType)
-- [IsExist](#IsExist)
-- [IsLink](#IsLink)
-- [IsDir](#IsDir)
-- [ListFileNames](#ListFileNames)
-- [RemoveFile](#RemoveFile)
-- [ReadFileToString](#ReadFileToString)
-- [ReadFileByLine](#ReadFileByLine)
-- [Zip](#Zip)
-- [UnZip](#UnZip)
+
+-   [ClearFile](#ClearFile)
+-   [CreateFile](#CreateFile)
+-   [CreateDir](#CreateDir)
+-   [CopyFile](#CopyFile)
+-   [FileMode](#FileMode)
+-   [MiMeType](#MiMeType)
+-   [IsExist](#IsExist)
+-   [IsLink](#IsLink)
+-   [IsDir](#IsDir)画
+-   [ListFileNames](#ListFileNames)
+-   [RemoveFile](#RemoveFile)
+-   [ReadFileToString](#ReadFileToString)
+-   [ReadFileByLine](#ReadFileByLine)
+-   [Zip](#Zip)
+-   [UnZip](#UnZip)
+-   [ZipAppendEntry](#ZipAppendEntry)
+-   [CurrentPath](#CurrentPath)
+-   [IsZipFile](#IsZipFile)
+-   [FileSize](#FileSize)
+-   [MTime](#MTime)
+-   [Sha](#Sha)
+-   [ReadCsvFile](#ReadCsvFile)
+-   [WriteCsvFile](#WriteCsvFile)
+-   [WriteMapsToCsv](#WriteMapsToCsv)
+-   [WriteStringToFile](#WriteStringToFile)
+-   [WriteBytesToFile](#WriteBytesToFile)
+-   [ReadFile](#ReadFile)
 
 <div STYLE="page-break-after: always;"></div>
 
 ## 文档
 
-
-
 ### <span id="ClearFile">ClearFile</span>
+
 <p>清空文件内容</p>
 
 <b>函数签名:</b>
@@ -49,6 +63,7 @@ import (
 ```go
 func ClearFile(path string) error
 ```
+
 <b>例子:</b>
 
 ```go
@@ -67,8 +82,8 @@ func main() {
 }
 ```
 
-
 ### <span id="CreateDir">CreateDir</span>
+
 <p>使用绝对路径创建嵌套目录，例如/a/, /a/b/</p>
 
 <b>函数签名:</b>
@@ -76,6 +91,7 @@ func main() {
 ```go
 func CreateDir(absPath string) error
 ```
+
 <b>例子:</b>
 
 ```go
@@ -92,9 +108,8 @@ func main() {
 }
 ```
 
-
-
 ### <span id="CreateFile">CreateFile</span>
+
 <p>创建文件，创建成功返回true, 否则返回false</p>
 
 <b>函数签名:</b>
@@ -102,6 +117,7 @@ func main() {
 ```go
 func CreateFile(path string) bool
 ```
+
 <b>例子:</b>
 
 ```go
@@ -118,8 +134,8 @@ func main() {
 }
 ```
 
-
 ### <span id="CopyFile">CopyFile</span>
+
 <p>拷贝文件，会覆盖原有的拷贝文件</p>
 
 <b>函数签名:</b>
@@ -127,6 +143,7 @@ func main() {
 ```go
 func CopyFile(srcFilePath string, dstFilePath string) error
 ```
+
 <b>例子:</b>
 
 ```go
@@ -139,15 +156,14 @@ import (
 
 func main() {
     err := fileutil.CopyFile("./test.txt", "./test_copy.txt")
-	if err != nil {
-		fmt.Println(err)
-	}
+    if err != nil {
+        fmt.Println(err)
+    }
 }
 ```
 
-
-
 ### <span id="FileMode">FileMode</span>
+
 <p>获取文件mode信息</p>
 
 <b>函数签名:</b>
@@ -155,6 +171,7 @@ func main() {
 ```go
 func FileMode(path string) (fs.FileMode, error)
 ```
+
 <b>例子:</b>
 
 ```go
@@ -167,16 +184,15 @@ import (
 
 func main() {
     mode, err := fileutil.FileMode("./test.txt")
-	if err != nil {
-		fmt.Println(err)
-	}
+    if err != nil {
+        fmt.Println(err)
+    }
     fmt.Println(mode)
 }
 ```
 
-
-
 ### <span id="MiMeType">MiMeType</span>
+
 <p>获取文件mime类型, 'file'参数的类型必须是string或者*os.File</p>
 
 <b>函数签名:</b>
@@ -184,6 +200,7 @@ func main() {
 ```go
 func MiMeType(file interface{}) string
 ```
+
 <b>例子:</b>
 
 ```go
@@ -205,10 +222,8 @@ func main() {
 }
 ```
 
-
-
-
 ### <span id="IsExist">IsExist</span>
+
 <p>判断文件或目录是否存在</p>
 
 <b>函数签名:</b>
@@ -216,6 +231,7 @@ func main() {
 ```go
 func IsExist(path string) bool
 ```
+
 <b>例子:</b>
 
 ```go
@@ -233,9 +249,8 @@ func main() {
 }
 ```
 
-
-
 ### <span id="IsLink">IsLink</span>
+
 <p>判断文件是否是符号链接</p>
 
 <b>函数签名:</b>
@@ -243,6 +258,7 @@ func main() {
 ```go
 func IsLink(path string) bool
 ```
+
 <b>例子:</b>
 
 ```go
@@ -259,16 +275,16 @@ func main() {
 }
 ```
 
-
-
 ### <span id="IsDir">IsDir</span>
+
 <p>判断目录是否存在</p>
 
 <b>函数签名:</b>
 
 ```go
-func IsDir(path string) bool 
+func IsDir(path string) bool
 ```
+
 <b>例子:</b>
 
 ```go
@@ -288,9 +304,8 @@ func main() {
 }
 ```
 
-
-
 ### <span id="ListFileNames">ListFileNames</span>
+
 <p>返回目录下所有文件名</p>
 
 <b>函数签名:</b>
@@ -298,6 +313,7 @@ func main() {
 ```go
 func ListFileNames(path string) ([]string, error)
 ```
+
 <b>例子:</b>
 
 ```go
@@ -314,9 +330,8 @@ func main() {
 }
 ```
 
-
-
 ### <span id="RemoveFile">RemoveFile</span>
+
 <p>删除文件</p>
 
 <b>函数签名:</b>
@@ -324,6 +339,7 @@ func main() {
 ```go
 func RemoveFile(path string) error
 ```
+
 <b>例子:</b>
 
 ```go
@@ -337,13 +353,13 @@ import (
 func main() {
     err := fileutil.RemoveFile("./test.txt")
     if err != nil {
-		fmt.Println(err)
-	}
+        fmt.Println(err)
+    }
 }
 ```
 
-
 ### <span id="ReadFileToString">ReadFileToString</span>
+
 <p>读取文件内容并返回字符串</p>
 
 <b>函数签名:</b>
@@ -351,6 +367,7 @@ func main() {
 ```go
 func ReadFileToString(path string) (string, error)
 ```
+
 <b>例子:</b>
 
 ```go
@@ -364,19 +381,18 @@ import (
 
 func main() {
     path := "./test.txt"
-	fileutil.CreateFile(path)
+    fileutil.CreateFile(path)
 
-	f, _ := os.OpenFile(path, os.O_WRONLY|os.O_TRUNC, 0777)
-	f.WriteString("hello world")
+    f, _ := os.OpenFile(path, os.O_WRONLY|os.O_TRUNC, 0777)
+    f.WriteString("hello world")
 
-	content, _ := fileutil.ReadFileToString(path)
+    content, _ := fileutil.ReadFileToString(path)
     fmt.Println(content) //hello world
 }
 ```
 
-
-
 ### <span id="ReadFileByLine">ReadFileByLine</span>
+
 <p>按行读取文件内容，返回字符串切片包含每一行</p>
 
 <b>函数签名:</b>
@@ -384,6 +400,7 @@ func main() {
 ```go
 func ReadFileByLine(path string)([]string, error)
 ```
+
 <b>例子:</b>
 
 ```go
@@ -397,20 +414,19 @@ import (
 
 func main() {
     path := "./text.txt"
-	fileutil.CreateFile(path)
+    fileutil.CreateFile(path)
 
-	f, _ := os.OpenFile(path, os.O_WRONLY|os.O_TRUNC, 0777)
-	defer f.Close()
-	f.WriteString("hello\nworld")
+    f, _ := os.OpenFile(path, os.O_WRONLY|os.O_TRUNC, 0777)
+    defer f.Close()
+    f.WriteString("hello\nworld")
 
-	contents, _ := fileutil.ReadFileByLine(path)
+    contents, _ := fileutil.ReadFileByLine(path)
     fmt.Println(contents) //[]string{"hello", "world"}
 }
 ```
 
-
-
 ### <span id="Zip">Zip</span>
+
 <p>zip压缩文件, fpath参数可以是文件或目录</p>
 
 <b>函数签名:</b>
@@ -418,6 +434,7 @@ func main() {
 ```go
 func Zip(fpath string, destPath string) error
 ```
+
 <b>例子:</b>
 
 ```go
@@ -429,24 +446,23 @@ import (
 )
 
 func main() {
-	err := fileutil.Zip("./test.txt", "./test.zip")
+    err := fileutil.Zip("./test.txt", "./test.zip")
     if err != nil {
         fmt.Println(err)
     }
 }
 ```
 
-
-
-
 ### <span id="UnZip">UnZip</span>
+
 <p>zip解压缩文件并保存在目录中</p>
 
-<b>Signature:</b>
+<b>函数签名:</b>
 
 ```go
 func UnZip(zipFile string, destPath string) error
 ```
+
 <b>例子:</b>
 
 ```go
@@ -458,14 +474,449 @@ import (
 )
 
 func main() {
-	err := fileutil.Zip("./test.zip", "./unzip/test.txt")
+    err := fileutil.Zip("./test.zip", "./unzip/test.txt")
     if err != nil {
         fmt.Println(err)
     }
 }
 ```
 
+### <span id="ZipAppendEntry">ZipAppendEntry</span>
 
+<p>通过将单个文件或目录追加到现有的zip文件</p>
 
+<b>函数签名:</b>
 
+```go
+func ZipAppendEntry(fpath string, destPath string) error
+```
 
+<b>示例:</b>
+
+```go
+package main
+
+import (
+    "fmt"
+    "github.com/duke-git/lancet/fileutil"
+)
+
+func main() {
+    err := fileutil.ZipAppendEntry("./test.txt", "./test.zip")
+    if err != nil {
+        fmt.Println(err)
+    }
+}
+```
+
+### <span id="CurrentPath">CurrentPath</span>
+
+<p>返回当前位置的绝对路径。</p>
+
+<b>函数签名:</b>
+
+```go
+func CurrentPath() string
+```
+
+<b>示例:</b>
+
+```go
+package main
+
+import (
+    "fmt"
+    "github.com/duke-git/lancet/fileutil"
+)
+
+func main() {
+    absPath := CurrentPath()
+    fmt.Println(absPath)
+}
+```
+
+### <span id="IsZipFile">IsZipFile</span>
+
+<p>判断文件是否是zip压缩文件。</p>
+
+<b>函数签名:</b>
+
+```go
+func IsZipFile(filepath string) bool
+```
+
+<b>示例:</b>
+
+```go
+package main
+
+import (
+    "fmt"
+    "github.com/duke-git/lancet/fileutil"
+)
+
+func main() {
+    isZip := IsZipFile("./zipfile.zip")
+    fmt.Println(isZip)
+}
+```
+
+### <span id="FileSize">FileSize</span>
+
+<p>返回文件字节大小。</p>
+
+<b>函数签名:</b>
+
+```go
+func FileSize(path string) (int64, error)
+```
+
+<b>示例:</b>
+
+```go
+package main
+
+import (
+    "fmt"
+    "github.com/duke-git/lancet/fileutil"
+)
+
+func main() {
+    size, err := fileutil.FileSize("./testdata/test.txt")
+
+    fmt.Println(size)
+    fmt.Println(err)
+
+    // Output:
+    // 20
+    // <nil>
+}
+```
+
+### <span id="MTime">MTime</span>
+
+<p>返回文件修改时间(unix timestamp).</p>
+
+<b>函数签名:</b>
+
+```go
+func MTime(filepath string) (int64, error)
+```
+
+<b>示例:</b>
+
+```go
+package main
+
+import (
+    "fmt"
+    "github.com/duke-git/lancet/fileutil"
+)
+
+func main() {
+    mtime, err := fileutil.MTime("./testdata/test.txt")
+
+    fmt.Println(mtime)
+    fmt.Println(err)
+
+    // Output:
+    // 1682391110
+    // <nil>
+}
+```
+
+### <span id="Sha">Sha</span>
+
+<p>返回文件sha值，参数`shaType` 应传值为: 1, 256，512.</p>
+
+<b>函数签名:</b>
+
+```go
+func Sha(filepath string, shaType ...int) (string, error)
+```
+
+<b>示例:</b>
+
+```go
+package main
+
+import (
+    "fmt"
+    "github.com/duke-git/lancet/fileutil"
+)
+
+func main() {
+    sha1, err := fileutil.Sha("./testdata/test.txt", 1)
+    sha256, _ := fileutil.Sha("./testdata/test.txt", 256)
+    sha512, _ := fileutil.Sha("./testdata/test.txt", 512)
+
+    fmt.Println(sha1)
+    fmt.Println(sha256)
+    fmt.Println(sha512)
+    fmt.Println(err)
+
+    // Output:
+    // dda3cf10c5a6ff6c6659a497bf7261b287af2bc7
+    // aa6d0a3fbc3442c228d606da09e0c1dc98c69a1cac3da1909199e0266171df35
+    // d22aba2a1b7a2e2f512756255cc1c3708905646920cb1eb95e45b531ba74774dbbb89baebf1f716220eb9cf4908f1cfc5b2a01267704d9a59f59d77cab609870
+    // <nil>
+}
+```
+
+### <span id="ReadCsvFile">ReadCsvFile</span>
+
+<p>读取csv文件内容到切片</p>
+
+<b>函数签名:</b>
+
+```go
+func ReadCsvFile(filepath string) ([][]string, error)
+```
+
+<b>示例:</b>
+
+```go
+package main
+
+import (
+    "fmt"
+    "github.com/duke-git/lancet/fileutil"
+)
+
+func main() {
+    content, err := fileutil.ReadCsvFile("./testdata/test.csv")
+
+    fmt.Println(content)
+    fmt.Println(err)
+
+    // Output:
+    // [[Bob  12  male] [Duke  14  male] [Lucy  16  female]]
+    // <nil>
+}
+```
+
+### <span id="WriteCsvFile">WriteCsvFile</span>
+
+<p>向csv文件写入内容。</p>
+
+<b>函数签名:</b>
+
+```go
+func WriteCsvFile(filepath string, records [][]string, append bool) error
+```
+
+<b>示例:</b>
+
+```go
+package main
+
+import (
+    "fmt"
+    "github.com/duke-git/lancet/fileutil"
+)
+
+func main() {
+    data := [][]string{
+        {"Lili", "22", "female"},
+        {"Jim", "21", "male"},
+    }
+    err := WriteCsvFile("./testdata/test2.csv", data, false)
+    fmt.Println(err)
+
+    content, _ := ReadCsvFile("./testdata/test2.csv")
+    fmt.Println(content)
+
+    // Output:
+    // <nil>
+    // [[Lili 22 female] [Jim 21 male]]
+}
+```
+
+### <span id="WriteMapsToCsv">WriteMapsToCsv</span>
+
+<p>将map切片写入csv文件中。</p>
+
+<b>函数签名:</b>
+
+```go
+// filepath: CSV文件路径。
+// records: 写入文件的map切片。map值必须为基本类型。会以map键的字母顺序写入。
+// appendToExistingFile: 是否为追加写模式。
+// delimiter: CSV文件分割符。
+// headers: CSV文件表头顺序（需要与map key保持一致)，不指定时按字母排序。
+func WriteMapsToCsv(filepath string, records []map[string]interface{}, appendToExistingFile bool, delimiter rune, headers ...[]string) error
+```
+
+<b>示例:</b>
+
+```go
+package main
+
+import (
+    "fmt"
+    "github.com/duke-git/lancet/fileutil"
+)
+
+func main() {
+    fpath := "./test.csv"
+    fileutil.CreateFile(fpath)
+
+    f, _ := os.OpenFile(fpath, os.O_WRONLY|os.O_TRUNC, 0777)
+    defer f.Close()
+
+    records := []map[string]interface{}{
+        {"Name": "Lili", "Age": "22", "Gender": "female"},
+        {"Name": "Jim", "Age": "21", "Gender": "male"},
+    }
+
+    headers := []string{"Name", "Age", "Gender"}
+    err := fileutil.WriteMapsToCsv(csvFilePath, records, false, ';', headers)
+
+    if err != nil {
+        log.Fatal(err)
+    }
+
+    content, err := fileutil.ReadCsvFile(csvFilePath, ';')
+
+    fmt.Println(content)
+
+    // Output:
+    // [[Name Age Gender] [Lili 22 female] [Jim 21 male]]
+}
+```
+
+### <span id="WriteBytesToFile">WriteBytesToFile</span>
+
+<p>将bytes写入文件。</p>
+
+<b>函数签名:</b>
+
+```go
+func WriteBytesToFile(filepath string, content []byte) error
+```
+
+<b>示例:</b>
+
+```go
+package main
+
+import (
+    "fmt"
+    "github.com/duke-git/lancet/fileutil"
+)
+
+func main() {
+    filepath := "./bytes.txt"
+
+    file, err := os.Create(filepath)
+    if err != nil {
+        return
+    }
+
+    defer file.Close()
+
+    err = fileutil.WriteBytesToFile(filepath, []byte("hello"))
+    if err != nil {
+        return
+    }
+
+    content, err := fileutil.ReadFileToString(filepath)
+    if err != nil {
+        return
+    }
+
+    os.Remove(filepath)
+
+    fmt.Println(content)
+
+    // Output:
+    // hello
+}
+```
+
+### <span id="WriteStringToFile">WriteStringToFile</span>
+
+<p>将字符串写入文件。</p>
+
+<b>函数签名:</b>
+
+```go
+func WriteStringToFile(filepath string, content string, append bool) error
+```
+
+<b>示例:</b>
+
+```go
+package main
+
+import (
+    "fmt"
+    "github.com/duke-git/lancet/fileutil"
+)
+
+func main() {
+    filepath := "./test.txt"
+
+    file, err := os.Create(filepath)
+    if err != nil {
+        return
+    }
+
+    defer file.Close()
+
+    err = fileutil.WriteStringToFile(filepath, "hello", true)
+    if err != nil {
+        return
+    }
+
+    content, err := fileutil.ReadFileToString(filepath)
+    if err != nil {
+        return
+    }
+
+    os.Remove(filepath)
+
+    fmt.Println(content)
+
+    // Output:
+    // hello
+}
+```
+
+### <span id="ReadFile">ReadFile</span>
+
+<p>读取文件或者URL</p>
+
+<b>函数签名:</b>
+
+```go
+func ReadFile(path string) (reader io.ReadCloser, closeFn func(), err error)
+```
+
+<b>示例:<span style="float:right;display:inline-block;"></span></b>
+
+```go
+package main
+
+import (
+    "fmt"
+    "github.com/duke-git/lancet/fileutil"
+)
+
+func main() {
+   reader, fn, err := ReadFile("https://httpbin.org/robots.txt")
+    if err != nil {
+        return
+    }
+    defer fn()
+
+    dat, err := io.ReadAll(reader)
+    if err != nil {
+        return
+    }
+    fmt.Println(string(dat))
+    // Output:
+    // User-agent: *
+    // Disallow: /deny
+}
+```

docs/formatter.md

@@ -1,4 +1,5 @@
 # Formatter
+
 formatter contains some functions for data formatting.
 
 <div STYLE="page-break-after: always;"></div>
@@ -10,6 +11,7 @@ formatter contains some functions for data formatting.
 <div STYLE="page-break-after: always;"></div>
 
 ## Usage:
+
 ```go
 import (
     "github.com/duke-git/lancet/formatter"
@@ -19,23 +21,30 @@ import (
 <div STYLE="page-break-after: always;"></div>
 
 ## Index
-- [Comma](#Comma)
+
+-   [Comma](#Comma)
+-   [Pretty](#Pretty)
+-   [PrettyToWriter](#PrettyToWriter)
+-   [DecimalBytes](#DecimalBytes)
+-   [BinaryBytes](#BinaryBytes)
+-   [ParseDecimalBytes](#ParseDecimalBytes)
+-   [ParseBinaryBytes](#ParseBinaryBytes)
 
 <div STYLE="page-break-after: always;"></div>
 
 ## Documentation
 
-
-
 ### <span id="Comma">Comma</span>
+
 <p>Add comma to number by every 3 numbers from right. ahead by symbol char.
 Param should be number or numberic string.</p>
 
 <b>Signature:</b>
 
 ```go
-func Comma(v interface{}, symbol string) string
+func Comma(value interface{}, prefixSymbol string) string
 ```
+
 <b>Example:</b>
 
 ```go
@@ -51,3 +60,241 @@ func main() {
     fmt.Println(formatter.Comma(12345.67, "¥")) // "¥12,345.67"
 }
 ```
+
+### <span id="Pretty">Pretty</span>
+
+<p>Pretty data to JSON string.</p>
+
+<b>Signature:</b>
+
+```go
+func Pretty(v interface{}) (string, error)
+```
+
+<b>Example:</b>
+
+```go
+package main
+
+import (
+    "fmt"
+    "github.com/duke-git/lancet/formatter"
+)
+
+func main() {
+    result1, _ := formatter.Pretty([]string{"a", "b", "c"})
+    result2, _ := formatter.Pretty(map[string]int{"a": 1})
+
+    fmt.Println(result1)
+    fmt.Println(result2)
+
+    // Output:
+    // [
+    //     "a",
+    //     "b",
+    //     "c"
+    // ]
+    // {
+    //     "a": 1
+    // }
+}
+```
+
+### <span id="PrettyToWriter">PrettyToWriter</span>
+
+<p>Pretty encode data to writer.</p>
+
+<b>Signature:</b>
+
+```go
+func PrettyToWriter(v interface{}, out io.Writer) error
+```
+
+<b>Example:</b>
+
+```go
+package main
+
+import (
+    "fmt"
+    "github.com/duke-git/lancet/formatter"
+)
+
+func main() {
+    type User struct {
+        Name string `json:"name"`
+        Aage uint   `json:"age"`
+    }
+    user := User{Name: "King", Aage: 10000}
+
+    buf := &bytes.Buffer{}
+    err := formatter.PrettyToWriter(user, buf)
+
+    fmt.Println(buf)
+    fmt.Println(err)
+
+    // Output:
+    // {
+    //     "name": "King",
+    //     "age": 10000
+    // }
+    //
+    // <nil>
+}
+```
+
+### <span id="DecimalBytes">DecimalBytes</span>
+
+<p>Returns a human readable byte size under decimal standard (base 1000). The precision parameter specifies the number of digits after the decimal point, which is 4 for default.</p>
+
+<b>Signature:</b>
+
+```go
+func DecimalBytes(size float64, precision ...int) string
+```
+
+<b>Example:</b>
+
+```go
+package main
+
+import (
+    "fmt"
+    "github.com/duke-git/lancet/formatter"
+)
+
+func main() {
+    result1 := formatter.DecimalBytes(1000)
+    result2 := formatter.DecimalBytes(1024)
+    result3 := formatter.DecimalBytes(1234567)
+    result4 := formatter.DecimalBytes(1234567, 3)
+
+    fmt.Println(result1)
+    fmt.Println(result2)
+    fmt.Println(result3)
+    fmt.Println(result4)
+
+    // Output:
+    // 1KB
+    // 1.024KB
+    // 1.2346MB
+    // 1.235MB
+}
+```
+
+### <span id="BinaryBytes">BinaryBytes</span>
+
+<p>Returns a human readable byte size under binary standard (base 1024). The precision parameter specifies the number of digits after the decimal point, which is 4 for default.</p>
+
+<b>Signature:</b>
+
+```go
+func BinaryBytes(size float64, precision ...int) string
+```
+
+<b>Example:</b>
+
+```go
+package main
+
+import (
+    "fmt"
+    "github.com/duke-git/lancet/formatter"
+)
+
+func main() {
+    result1 := formatter.BinaryBytes(1024)
+    result2 := formatter.BinaryBytes(1024 * 1024)
+    result3 := formatter.BinaryBytes(1234567)
+    result4 := formatter.BinaryBytes(1234567, 2)
+
+    fmt.Println(result1)
+    fmt.Println(result2)
+    fmt.Println(result3)
+    fmt.Println(result4)
+
+    // Output:
+    // 1KiB
+    // 1MiB
+    // 1.1774MiB
+    // 1.18MiB
+}
+```
+
+### <span id="ParseDecimalBytes">ParseDecimalBytes</span>
+
+<p>Returns the human readable bytes size string into the amount it represents(base 1000).</p>
+
+<b>Signature:</b>
+
+```go
+func ParseDecimalBytes(size string) (uint64, error)
+```
+
+<b>Example:</b>
+
+```go
+package main
+
+import (
+    "fmt"
+    "github.com/duke-git/lancet/formatter"
+)
+
+func main() {
+    result1, _ := formatter.ParseDecimalBytes("12")
+    result2, _ := formatter.ParseDecimalBytes("12k")
+    result3, _ := formatter.ParseDecimalBytes("12 Kb")
+    result4, _ := formatter.ParseDecimalBytes("12.2 kb")
+
+    fmt.Println(result1)
+    fmt.Println(result2)
+    fmt.Println(result3)
+    fmt.Println(result4)
+
+    // Output:
+    // 12
+    // 12000
+    // 12000
+    // 12200
+}
+```
+
+### <span id="ParseBinaryBytes">ParseBinaryBytes</span>
+
+<p>Returns the human readable bytes size string into the amount it represents(base 1024).</p>
+
+<b>Signature:</b>
+
+```go
+func ParseBinaryBytes(size string) (uint64, error)
+```
+
+<b>Example:</b>
+
+```go
+package main
+
+import (
+    "fmt"
+    "github.com/duke-git/lancet/formatter"
+)
+
+func main() {
+    result1, _ := formatter.ParseBinaryBytes("12")
+    result2, _ := formatter.ParseBinaryBytes("12ki")
+    result3, _ := formatter.ParseBinaryBytes("12 KiB")
+    result4, _ := formatter.ParseBinaryBytes("12.2 kib")
+
+    fmt.Println(result1)
+    fmt.Println(result2)
+    fmt.Println(result3)
+    fmt.Println(result4)
+
+    // Output:
+    // 12
+    // 12288
+    // 12288
+    // 12492
+}
+```

docs/formatter_zh-CN.md

@@ -1,5 +1,6 @@
 # Formatter
-formatter格式化器包含一些数据格式化处理方法。
+
+formatter 格式化器包含一些数据格式化处理方法。
 
 <div STYLE="page-break-after: always;"></div>
 
@@ -10,6 +11,7 @@ formatter格式化器包含一些数据格式化处理方法。
 <div STYLE="page-break-after: always;"></div>
 
 ## 用法:
+
 ```go
 import (
     "github.com/duke-git/lancet/formatter"
@@ -19,22 +21,29 @@ import (
 <div STYLE="page-break-after: always;"></div>
 
 ## 目录
-- [Comma](#Comma)
+
+-   [Comma](#Comma)
+-   [Pretty](#Pretty)
+-   [PrettyToWriter](#PrettyToWriter)
+-   [DecimalBytes](#DecimalBytes)
+-   [BinaryBytes](#BinaryBytes)
+-   [ParseDecimalBytes](#ParseDecimalBytes)
+-   [ParseBinaryBytes](#ParseBinaryBytes)
 
 <div STYLE="page-break-after: always;"></div>
 
 ## 文档
 
-
-
 ### <span id="Comma">Comma</span>
+
 <p>用逗号每隔3位分割数字/字符串，签名添加符号。参数必须是数字或者可以转为数字的字符串</p>
 
 <b>函数签名:</b>
 
 ```go
-func Comma(v interface{}, symbol string) string
+func Comma(v interface{}, prefixSymbol string) string
 ```
+
 <b>例子:</b>
 
 ```go
@@ -50,3 +59,241 @@ func main() {
     fmt.Println(formatter.Comma(12345.67, "¥")) // "¥12,345.67"
 }
 ```
+
+### <span id="Pretty">Pretty</span>
+
+<p>返回pretty JSON字符串.</p>
+
+<b>函数签名:</b>
+
+```go
+func Pretty(v interface{}) (string, error)
+```
+
+<b>示例:</b>
+
+```go
+package main
+
+import (
+    "fmt"
+    "github.com/duke-git/lancet/formatter"
+)
+
+func main() {
+    result1, _ := formatter.Pretty([]string{"a", "b", "c"})
+    result2, _ := formatter.Pretty(map[string]int{"a": 1})
+
+    fmt.Println(result1)
+    fmt.Println(result2)
+
+    // Output:
+    // [
+    //     "a",
+    //     "b",
+    //     "c"
+    // ]
+    // {
+    //     "a": 1
+    // }
+}
+```
+
+### <span id="PrettyToWriter">PrettyToWriter</span>
+
+<p>Pretty encode数据到writer。</p>
+
+<b>函数签名:</b>
+
+```go
+func PrettyToWriter(v interface{}, out io.Writer) error
+```
+
+<b>示例:</b>
+
+```go
+package main
+
+import (
+    "fmt"
+    "github.com/duke-git/lancet/formatter"
+)
+
+func main() {
+    type User struct {
+        Name string `json:"name"`
+        Aage uint   `json:"age"`
+    }
+    user := User{Name: "King", Aage: 10000}
+
+    buf := &bytes.Buffer{}
+    err := formatter.PrettyToWriter(user, buf)
+
+    fmt.Println(buf)
+    fmt.Println(err)
+
+    // Output:
+    // {
+    //     "name": "King",
+    //     "age": 10000
+    // }
+    //
+    // <nil>
+}
+```
+
+### <span id="DecimalBytes">DecimalBytes</span>
+
+<p>返回十进制标准（以1000为基数）下的可读字节单位字符串。precision参数指定小数点后的位数，默认为4。</p>
+
+<b>函数签名:</b>
+
+```go
+func DecimalBytes(size float64, precision ...int) string
+```
+
+<b>示例:</b>
+
+```go
+package main
+
+import (
+    "fmt"
+    "github.com/duke-git/lancet/formatter"
+)
+
+func main() {
+    result1 := formatter.DecimalBytes(1000)
+    result2 := formatter.DecimalBytes(1024)
+    result3 := formatter.DecimalBytes(1234567)
+    result4 := formatter.DecimalBytes(1234567, 3)
+
+    fmt.Println(result1)
+    fmt.Println(result2)
+    fmt.Println(result3)
+    fmt.Println(result4)
+
+    // Output:
+    // 1KB
+    // 1.024KB
+    // 1.2346MB
+    // 1.235MB
+}
+```
+
+### <span id="BinaryBytes">BinaryBytes</span>
+
+<p>返回binary标准（以1024为基数）下的可读字节单位字符串。precision参数指定小数点后的位数，默认为4。</p>
+
+<b>函数签名:</b>
+
+```go
+func BinaryBytes(size float64, precision ...int) string
+```
+
+<b>示例:</b>
+
+```go
+package main
+
+import (
+    "fmt"
+    "github.com/duke-git/lancet/formatter"
+)
+
+func main() {
+    result1 := formatter.BinaryBytes(1024)
+    result2 := formatter.BinaryBytes(1024 * 1024)
+    result3 := formatter.BinaryBytes(1234567)
+    result4 := formatter.BinaryBytes(1234567, 2)
+
+    fmt.Println(result1)
+    fmt.Println(result2)
+    fmt.Println(result3)
+    fmt.Println(result4)
+
+    // Output:
+    // 1KiB
+    // 1MiB
+    // 1.1774MiB
+    // 1.18MiB
+}
+```
+
+### <span id="ParseDecimalBytes">ParseDecimalBytes</span>
+
+<p>将字节单位字符串转换成其所表示的字节数（以1000为基数）。</p>
+
+<b>函数签名:</b>
+
+```go
+func ParseDecimalBytes(size string) (uint64, error)
+```
+
+<b>示例:</b>
+
+```go
+package main
+
+import (
+    "fmt"
+    "github.com/duke-git/lancet/formatter"
+)
+
+func main() {
+    result1, _ := formatter.ParseDecimalBytes("12")
+    result2, _ := formatter.ParseDecimalBytes("12k")
+    result3, _ := formatter.ParseDecimalBytes("12 Kb")
+    result4, _ := formatter.ParseDecimalBytes("12.2 kb")
+
+    fmt.Println(result1)
+    fmt.Println(result2)
+    fmt.Println(result3)
+    fmt.Println(result4)
+
+    // Output:
+    // 12
+    // 12000
+    // 12000
+    // 12200
+}
+```
+
+### <span id="ParseBinaryBytes">ParseBinaryBytes</span>
+
+<p>将字节单位字符串转换成其所表示的字节数（以1024为基数）。</p>
+
+<b>函数签名:</b>
+
+```go
+func ParseBinaryBytes(size string) (uint64, error)
+```
+
+<b>示例:</b>
+
+```go
+package main
+
+import (
+    "fmt"
+    "github.com/duke-git/lancet/formatter"
+)
+
+func main() {
+    result1, _ := formatter.ParseBinaryBytes("12")
+    result2, _ := formatter.ParseBinaryBytes("12ki")
+    result3, _ := formatter.ParseBinaryBytes("12 KiB")
+    result4, _ := formatter.ParseBinaryBytes("12.2 kib")
+
+    fmt.Println(result1)
+    fmt.Println(result2)
+    fmt.Println(result3)
+    fmt.Println(result4)
+
+    // Output:
+    // 12
+    // 12288
+    // 12288
+    // 12492
+}
+```

docs/function.md

@@ -1,4 +1,5 @@
 # Function
+
 Package function can control the flow of function execution and support part of functional programming.
 
 <div STYLE="page-break-after: always;"></div>
@@ -11,6 +12,7 @@ Package function can control the flow of function execution and support part of
 <div STYLE="page-break-after: always;"></div>
 
 ## Usage:
+
 ```go
 import (
     "github.com/duke-git/lancet/function"
@@ -20,21 +22,25 @@ import (
 <div STYLE="page-break-after: always;"></div>
 
 ## Index
-- [After](#After)
-- [Before](#Before)
-- [Curry](#Curry)
-- [Compose](#Compose)
-- [Debounced](#Debounced)
-- [Delay](#Delay)
-- [Watcher](#Watcher)
+
+-   [After](#After)
+-   [Before](#Before)
+-   [Curry](#Curry)
+-   [Compose](#Compose)
+-   [Debounce](#Debounce)
+-   [Debounced<sup>deprecated</sup>](#Debounced)
+-   [Throttle](#Throttle)
+-   [Delay](#Delay)
+-   [Pipeline](#Pipeline)
+-   [Schedule](#Schedule)
+-   [Watcher](#Watcher)
 
 <div STYLE="page-break-after: always;"></div>
 
 ## Documentation
 
-
-
 ### <span id="After">After</span>
+
 <p>Creates a function that invokes given func once it's called n or more times.</p>
 
 <b>Signature:</b>
@@ -42,6 +48,7 @@ import (
 ```go
 func After(n int, fn interface{}) func(args ...interface{}) []reflect.Value
 ```
+
 <b>Example:</b>
 
 ```go
@@ -53,33 +60,31 @@ import (
 )
 
 func main() {
-	arr := []string{"a", "b"}
-	f := function.After(len(arr), func(i int) int {
-		fmt.Println("last print")
-		return i
-	})
+    arr := []string{"a", "b"}
+    f := function.After(len(arr), func(i int) int {
+        fmt.Println("last print")
+        return i
+    })
 
-	type cb func(args ...interface{}) []reflect.Value
-	print := func(i int, s string, fn cb) {
-		fmt.Printf("arr[%d] is %s \n", i, s)
-		fn(i)
-	}
+    type cb func(args ...interface{}) []reflect.Value
+    print := func(i int, s string, fn cb) {
+        fmt.Printf("arr[%d] is %s \n", i, s)
+        fn(i)
+    }
 
-	fmt.Println("arr is", arr)
-	for i := 0; i < len(arr); i++ {
-		print(i, arr[i], f)
-	}
+    fmt.Println("arr is", arr)
+    for i := 0; i < len(arr); i++ {
+        print(i, arr[i], f)
+    }
 
     //output:
     // arr is [a b]
-    // arr[0] is a 
-    // arr[1] is b 
+    // arr[0] is a
+    // arr[1] is b
     // last print
 }
 ```
 
-
-
 ### <span id="Before">Before</span>
 
 <p>creates a function that invokes func once it's called less than n times.</p>
@@ -89,6 +94,7 @@ func main() {
 ```go
 func Before(n int, fn interface{}) func(args ...interface{}) []reflect.Value
 ```
+
 <b>Example:</b>
 
 ```go
@@ -103,29 +109,27 @@ import (
 func main() {
     assert := internal.NewAssert(t, "TestBefore")
 
-	arr := []string{"a", "b", "c", "d", "e"}
-	f := function.Before(3, func(i int) int {
-		return i
-	})
+    arr := []string{"a", "b", "c", "d", "e"}
+    f := function.Before(3, func(i int) int {
+        return i
+    })
 
-	var res []int64
-	type cb func(args ...interface{}) []reflect.Value
-	appendStr := func(i int, s string, fn cb) {
-		v := fn(i)
-		res = append(res, v[0].Int())
-	}
+    var res []int64
+    type cb func(args ...interface{}) []reflect.Value
+    appendStr := func(i int, s string, fn cb) {
+        v := fn(i)
+        res = append(res, v[0].Int())
+    }
 
-	for i := 0; i < len(arr); i++ {
-		appendStr(i, arr[i], f)
-	}
+    for i := 0; i < len(arr); i++ {
+        appendStr(i, arr[i], f)
+    }
 
-	expected := []int64{0, 1, 2, 2, 2}
-	assert.Equal(expected, res)
+    expected := []int64{0, 1, 2, 2, 2}
+    assert.Equal(expected, res)
 }
 ```
 
-
-
 ### <span id="Curry">Curry</span>
 
 <p>Make a curry function.</p>
@@ -136,6 +140,7 @@ func main() {
 type Fn func(...interface{}) interface{}
 func (f Fn) Curry(i interface{}) func(...interface{}) interface{}
 ```
+
 <b>Example:</b>
 
 ```go
@@ -148,19 +153,17 @@ import (
 
 func main() {
     add := func(a, b int) int {
-		return a + b
-	}
-	var addCurry function.Fn = func(values ...interface{}) interface{} {
-		return add(values[0].(int), values[1].(int))
-	}
-	add1 := addCurry.Curry(1)
-	result := add1(2)
+        return a + b
+    }
+    var addCurry function.Fn = func(values ...interface{}) interface{} {
+        return add(values[0].(int), values[1].(int))
+    }
+    add1 := addCurry.Curry(1)
+    result := add1(2)
     fmt.Println(result) //3
 }
 ```
 
-
-
 ### <span id="Compose">Compose</span>
 
 <p>Compose the function list from right to left, then return the composed function.</p>
@@ -170,6 +173,7 @@ func main() {
 ```go
 func Compose(fnList ...func(...interface{}) interface{}) func(...interface{}) interface{}
 ```
+
 <b>Example:</b>
 
 ```go
@@ -182,30 +186,29 @@ import (
 
 func main() {
     add1 := func(v ...interface{}) interface{} {
-		return v[0].(int) + 1
-	}
+        return v[0].(int) + 1
+    }
     add2 := func(v ...interface{}) interface{} {
-		return v[0].(int) + 2
-	}
+        return v[0].(int) + 2
+    }
 
     add3 := function.Compose(add1, add2)
-	result := add3(1)
+    result := add3(1)
 
     fmt.Println(result) //4
 }
 ```
 
-
-
 ### <span id="Debounced">Debounced</span>
 
-<p>Creates a debounced function that delays invoking fn until after wait duration have elapsed since the last time the debounced function was invoked.</p>
+<p>Creates a debounced function that delays invoking fn until after wait duration have elapsed since the last time the debounced function was invoked. This function is deprecated. use Debounce instead.</p>
 
 <b>Signature:</b>
 
 ```go
 func Debounced(fn func(), duration time.Duration) func()
 ```
+
 <b>Example:</b>
 
 ```go
@@ -218,36 +221,35 @@ import (
 
 func main() {
     count := 0
-	add := func() {
-		count++
-	}
+    add := func() {
+        count++
+    }
 
-	debouncedAdd := function.Debounced(add, 50*time.Microsecond)
-	function.debouncedAdd()
-	function.debouncedAdd()
-	function.debouncedAdd()
-	function.debouncedAdd()
+    debouncedAdd := function.Debounced(add, 50*time.Microsecond)
+    function.debouncedAdd()
+    function.debouncedAdd()
+    function.debouncedAdd()
+    function.debouncedAdd()
 
-	time.Sleep(100 * time.Millisecond)
-	fmt.Println(count) //1
+    time.Sleep(100 * time.Millisecond)
+    fmt.Println(count) //1
 
-	function.debouncedAdd()
-	time.Sleep(100 * time.Millisecond)
-	fmt.Println(count) //2
+    function.debouncedAdd()
+    time.Sleep(100 * time.Millisecond)
+    fmt.Println(count) //2
 }
 ```
 
+### <span id="Debounce">Debounce</span>
 
-
-### <span id="Delay">Delay</span>
-
-<p>Invoke function after delayed time.</p>
+<p>Creates a debounced version of the provided function. The debounced function will only invoke the original function after the specified delay has passed since the last time it was invoked. It also supports canceling the debounce.</p>
 
 <b>Signature:</b>
 
 ```go
-func Delay(delay time.Duration, fn interface{}, args ...interface{})
+func Debounce(fn func(), delay time.Duration) (debouncedFn func(), cancelFn func())
 ```
+
 <b>Example:</b>
 
 ```go
@@ -259,14 +261,101 @@ import (
 )
 
 func main() {
-	var print = func(s string) {
-		fmt.Println(count) //test delay
-	}
-	function.Delay(2*time.Second, print, "test delay")
+    callCount := 0
+    fn := func() {
+        callCount++
+    }
+
+    debouncedFn, _ := function.Debounce(fn, 500*time.Millisecond)
+
+    for i := 0; i < 10; i++ {
+        debouncedFn()
+        time.Sleep(50 * time.Millisecond)
+    }
+
+    time.Sleep(1 * time.Second)
+    fmt.Println(callCount)
+
+    debouncedFn()
+
+    time.Sleep(1 * time.Second)
+    fmt.Println(callCount)
+
+    // Output:
+    // 1
+    // 2
 }
 ```
 
+### <span id="Delay">Delay</span>
 
+<p>Invoke function after delayed time.</p>
+
+<b>Signature:</b>
+
+```go
+func Delay(delay time.Duration, fn interface{}, args ...interface{})
+```
+
+<b>Example:</b>
+
+```go
+package main
+
+import (
+    "fmt"
+    "github.com/duke-git/lancet/function"
+)
+
+func main() {
+    var print = func(s string) {
+        fmt.Println(count) //test delay
+    }
+    function.Delay(2*time.Second, print, "test delay")
+}
+```
+
+### <span id="Throttle">Throttle</span>
+
+<p>Creates a throttled version of the provided function. The returned function guarantees that it will only be invoked at most once per interval.</p>
+
+<b>Signature:</b>
+
+```go
+func Throttle(fn func(), interval time.Duration) func()
+```
+
+<b>Example:</b>
+
+```go
+package main
+
+import (
+    "fmt"
+    "github.com/duke-git/lancet/function"
+)
+
+func main() {
+    callCount := 0
+
+    fn := func() {
+        callCount++
+    }
+
+    throttledFn := function.Throttle(fn, 1*time.Second)
+
+    for i := 0; i < 5; i++ {
+        throttledFn()
+    }
+
+    time.Sleep(1 * time.Second)
+
+    fmt.Println(callCount)
+
+    // Output:
+    // 1
+}
+```
 
 ### <span id="Schedule">Schedule</span>
 
@@ -277,6 +366,7 @@ func main() {
 ```go
 func Schedule(d time.Duration, fn interface{}, args ...interface{}) chan bool
 ```
+
 <b>Example:</b>
 
 ```go
@@ -289,19 +379,60 @@ import (
 
 func main() {
     var res []string
-	appendStr := func(s string) {
-		res = append(res, s)
-	}
+    appendStr := func(s string) {
+        res = append(res, s)
+    }
 
-	stop := function.Schedule(1*time.Second, appendStr, "*")
-	time.Sleep(5 * time.Second)
-	close(stop)
+    stop := function.Schedule(1*time.Second, appendStr, "*")
+    time.Sleep(5 * time.Second)
+    close(stop)
 
-	fmt.Println(res) //[* * * * *]
+    fmt.Println(res) //[* * * * *]
 }
 ```
 
+### <span id="Pipeline">Pipeline</span>
 
+<p>Pipeline takes a list of functions and returns a function whose param will be passed into
+the functions one by one.</p>
+
+<b>Signature:</b>
+
+```go
+func Pipeline(funcs ...func(interface{}) interface{}) func(interface{}) interface{}
+```
+
+<b>Example:</b>
+
+```go
+package main
+
+import (
+    "fmt"
+    "github.com/duke-git/lancet/function"
+)
+
+func main() {
+    addOne := func(x interface{}) interface{} {
+        return x.(int) + 1
+    }
+    double := func(x interface{}) interface{} {
+        return 2 * x.(int)
+    }
+    square := func(x interface{}) interface{} {
+        return x.(int) * x.(int)
+    }
+
+    f := function.Pipeline(addOne, double, square)
+
+    result := fn(2)
+
+    fmt.Println(result)
+
+    // Output:
+    // 36
+}
+```
 
 ### <span id="Watcher">Watcher</span>
 
@@ -311,15 +442,16 @@ func main() {
 
 ```go
 type Watcher struct {
-	startTime int64
-	stopTime  int64
-	excuting  bool
+    startTime int64
+    stopTime  int64
+    excuting  bool
 }
 func (w *Watcher) Start() //start the watcher
 func (w *Watcher) Stop() //stop the watcher
 func (w *Watcher) Reset() //reset the watcher
 func (w *Watcher) GetElapsedTime() time.Duration //get the elapsed time of function execution
 ```
+
 <b>Example:</b>
 
 ```go
@@ -332,33 +464,30 @@ import (
 
 func main() {
     w := &function.Watcher{}
-	w.Start()
+    w.Start()
 
-	longRunningTask()
+    longRunningTask()
 
-	fmt.Println(w.excuting) //true
+    fmt.Println(w.excuting) //true
 
-	w.Stop()
+    w.Stop()
 
-	eapsedTime := w.GetElapsedTime().Milliseconds()
-	fmt.Println(eapsedTime)
+    eapsedTime := w.GetElapsedTime().Milliseconds()
+    fmt.Println(eapsedTime)
 
-	w.Reset()
+    w.Reset()
 
-	fmt.Println(w.excuting) //false
+    fmt.Println(w.excuting) //false
 
-	fmt.Println(w.startTime) //0
-	fmt.Println(w.stopTime) //0
+    fmt.Println(w.startTime) //0
+    fmt.Println(w.stopTime) //0
 }
 
 func longRunningTask() {
-	var slice []int64
-	for i := 0; i < 10000000; i++ {
-		slice = append(slice, int64(i))
-	}
+    var slice []int64
+    for i := 0; i < 10000000; i++ {
+        slice = append(slice, int64(i))
+    }
 }
 
 ```
-
-
-

docs/function_zh-CN.md

@@ -1,5 +1,6 @@
 # Function
-function函数包控制函数执行流程，包含部分函数式编程。
+
+function 函数包控制函数执行流程，包含部分函数式编程。
 
 <div STYLE="page-break-after: always;"></div>
 
@@ -11,6 +12,7 @@ function函数包控制函数执行流程，包含部分函数式编程。
 <div STYLE="page-break-after: always;"></div>
 
 ## 用法:
+
 ```go
 import (
     "github.com/duke-git/lancet/function"
@@ -20,21 +22,25 @@ import (
 <div STYLE="page-break-after: always;"></div>
 
 ## 目录
-- [After](#After)
-- [Before](#Before)
-- [Curry](#Curry)
-- [Compose](#Compose)
-- [Debounced](#Debounced)
-- [Delay](#Delay)
-- [Watcher](#Watcher)
+
+-   [After](#After)
+-   [Before](#Before)
+-   [Curry](#Curry)
+-   [Compose](#Compose)
+-   [Debounce](#Debounce)
+-   [Debounced<sup>deprecated</sup>](#Debounced)
+-   [Throttle](#Throttle)
+-   [Delay](#Delay)
+-   [Pipeline](#Pipeline)
+-   [Schedule](#Schedule)
+-   [Watcher](#Watcher)
 
 <div STYLE="page-break-after: always;"></div>
 
 ## 文档
 
-
-
 ### <span id="After">After</span>
+
 <p>创建一个函数，当他被调用n或更多次之后将马上触发fn</p>
 
 <b>函数签名:</b>
@@ -42,6 +48,7 @@ import (
 ```go
 func After(n int, fn interface{}) func(args ...interface{}) []reflect.Value
 ```
+
 <b>例子:</b>
 
 ```go
@@ -53,33 +60,31 @@ import (
 )
 
 func main() {
-	arr := []string{"a", "b"}
-	f := function.After(len(arr), func(i int) int {
-		fmt.Println("last print")
-		return i
-	})
+    arr := []string{"a", "b"}
+    f := function.After(len(arr), func(i int) int {
+        fmt.Println("last print")
+        return i
+    })
 
-	type cb func(args ...interface{}) []reflect.Value
-	print := func(i int, s string, fn cb) {
-		fmt.Printf("arr[%d] is %s \n", i, s)
-		fn(i)
-	}
+    type cb func(args ...interface{}) []reflect.Value
+    print := func(i int, s string, fn cb) {
+        fmt.Printf("arr[%d] is %s \n", i, s)
+        fn(i)
+    }
 
-	fmt.Println("arr is", arr)
-	for i := 0; i < len(arr); i++ {
-		print(i, arr[i], f)
-	}
+    fmt.Println("arr is", arr)
+    for i := 0; i < len(arr); i++ {
+        print(i, arr[i], f)
+    }
 
     //output:
     // arr is [a b]
-    // arr[0] is a 
-    // arr[1] is b 
+    // arr[0] is a
+    // arr[1] is b
     // last print
 }
 ```
 
-
-
 ### <span id="Before">Before</span>
 
 <p>创建一个函数，调用次数不超过n次，之后再调用这个函数，将返回一次最后调用fn的结果</p>
@@ -89,6 +94,7 @@ func main() {
 ```go
 func Before(n int, fn interface{}) func(args ...interface{}) []reflect.Value
 ```
+
 <b>例子:</b>
 
 ```go
@@ -101,31 +107,29 @@ import (
 )
 
 func main() {
-	assert := internal.NewAssert(t, "TestBefore")
+    assert := internal.NewAssert(t, "TestBefore")
 
-	arr := []string{"a", "b", "c", "d", "e"}
-	f := function.Before(3, func(i int) int {
-		return i
-	})
+    arr := []string{"a", "b", "c", "d", "e"}
+    f := function.Before(3, func(i int) int {
+        return i
+    })
 
-	var res []int64
-	type cb func(args ...interface{}) []reflect.Value
-	appendStr := func(i int, s string, fn cb) {
-		v := fn(i)
-		res = append(res, v[0].Int())
-	}
+    var res []int64
+    type cb func(args ...interface{}) []reflect.Value
+    appendStr := func(i int, s string, fn cb) {
+        v := fn(i)
+        res = append(res, v[0].Int())
+    }
 
-	for i := 0; i < len(arr); i++ {
-		appendStr(i, arr[i], f)
-	}
+    for i := 0; i < len(arr); i++ {
+        appendStr(i, arr[i], f)
+    }
 
-	expected := []int64{0, 1, 2, 2, 2}
-	assert.Equal(expected, res)
+    expected := []int64{0, 1, 2, 2, 2}
+    assert.Equal(expected, res)
 }
 ```
 
-
-
 ### <span id="Curry">Curry</span>
 
 <p>创建一个柯里化的函数</p>
@@ -136,6 +140,7 @@ func main() {
 type Fn func(...interface{}) interface{}
 func (f Fn) Curry(i interface{}) func(...interface{}) interface{}
 ```
+
 <b>例子:</b>
 
 ```go
@@ -147,20 +152,18 @@ import (
 )
 
 func main() {
-	add := func(a, b int) int {
-		return a + b
-	}
-	var addCurry function.Fn = func(values ...interface{}) interface{} {
-		return add(values[0].(int), values[1].(int))
-	}
-	add1 := addCurry.Curry(1)
-	result := add1(2)
-	fmt.Println(result) //3
+    add := func(a, b int) int {
+        return a + b
+    }
+    var addCurry function.Fn = func(values ...interface{}) interface{} {
+        return add(values[0].(int), values[1].(int))
+    }
+    add1 := addCurry.Curry(1)
+    result := add1(2)
+    fmt.Println(result) //3
 }
 ```
 
-
-
 ### <span id="Compose">Compose</span>
 
 <p>从右至左组合函数列表fnList， 返回组合后的函数</p>
@@ -170,6 +173,7 @@ func main() {
 ```go
 func Compose(fnList ...func(...interface{}) interface{}) func(...interface{}) interface{}
 ```
+
 <b>例子:</b>
 
 ```go
@@ -181,21 +185,66 @@ import (
 )
 
 func main() {
-	add1 := func(v ...interface{}) interface{} {
-		return v[0].(int) + 1
-	}
-	add2 := func(v ...interface{}) interface{} {
-		return v[0].(int) + 2
-	}
+    add1 := func(v ...interface{}) interface{} {
+        return v[0].(int) + 1
+    }
+    add2 := func(v ...interface{}) interface{} {
+        return v[0].(int) + 2
+    }
 
-	add3 := function.Compose(add1, add2)
-	result := add3(1)
+    add3 := function.Compose(add1, add2)
+    result := add3(1)
 
-	fmt.Println(result) //4
+    fmt.Println(result) //4
 }
 ```
 
+### <span id="Debounce">Debounce</span>
 
+<p>创建一个函数的去抖动版本。该去抖动函数仅在上次调用后的指定延迟时间过去之后才会调用原始函数。支持取消去抖动。</p>
+
+<b>函数签名:</b>
+
+```go
+func Debounce(fn func(), delay time.Duration) (debouncedFn func(), cancelFn func())
+```
+
+<b>示例:</b>
+
+```go
+package main
+
+import (
+    "fmt"
+    "github.com/duke-git/lancet/function"
+)
+
+func main() {
+    callCount := 0
+    fn := func() {
+        callCount++
+    }
+
+    debouncedFn, _ := function.Debounce(fn, 500*time.Millisecond)
+
+    for i := 0; i < 10; i++ {
+        debouncedFn()
+        time.Sleep(50 * time.Millisecond)
+    }
+
+    time.Sleep(1 * time.Second)
+    fmt.Println(callCount)
+
+    debouncedFn()
+
+    time.Sleep(1 * time.Second)
+    fmt.Println(callCount)
+
+    // Output:
+    // 1
+    // 2
+}
+```
 
 ### <span id="Debounced">Debounced</span>
 
@@ -206,6 +255,7 @@ func main() {
 ```go
 func Debounced(fn func(), duration time.Duration) func()
 ```
+
 <b>例子:</b>
 
 ```go
@@ -217,27 +267,67 @@ import (
 )
 
 func main() {
-	count := 0
-	add := func() {
-		count++
-	}
+    count := 0
+    add := func() {
+        count++
+    }
 
-	debouncedAdd := function.Debounced(add, 50*time.Microsecond)
-	function.debouncedAdd()
-	function.debouncedAdd()
-	function.debouncedAdd()
-	function.debouncedAdd()
+    debouncedAdd := function.Debounced(add, 50*time.Microsecond)
+    function.debouncedAdd()
+    function.debouncedAdd()
+    function.debouncedAdd()
+    function.debouncedAdd()
 
-	time.Sleep(100 * time.Millisecond)
-	fmt.Println(count) //1
+    time.Sleep(100 * time.Millisecond)
+    fmt.Println(count) //1
 
-	function.debouncedAdd()
-	time.Sleep(100 * time.Millisecond)
-	fmt.Println(count) //2
+    function.debouncedAdd()
+    time.Sleep(100 * time.Millisecond)
+    fmt.Println(count) //2
 }
 ```
 
+### <span id="Throttle">Throttle</span>
 
+<p>创建一个函数的节流版本。返回的函数保证在每个时间间隔内最多只会被调用一次。</p>
+
+<b>函数签名:</b>
+
+```go
+func Throttle(fn func(), interval time.Duration) func()
+```
+
+<b>示例:</b>
+
+```go
+package main
+
+import (
+    "fmt"
+    "github.com/duke-git/lancet/function"
+)
+
+func main() {
+    callCount := 0
+
+    fn := func() {
+        callCount++
+    }
+
+    throttledFn := function.Throttle(fn, 1*time.Second)
+
+    for i := 0; i < 5; i++ {
+        throttledFn()
+    }
+
+    time.Sleep(1 * time.Second)
+
+    fmt.Println(callCount)
+
+    // Output:
+    // 1
+}
+```
 
 ### <span id="Delay">Delay</span>
 
@@ -248,6 +338,7 @@ func main() {
 ```go
 func Delay(delay time.Duration, fn interface{}, args ...interface{})
 ```
+
 <b>例子:</b>
 
 ```go
@@ -259,15 +350,13 @@ import (
 )
 
 func main() {
-	var print = func(s string) {
-		fmt.Println(count) //test delay
-	}
-	function.Delay(2*time.Second, print, "test delay")
+    var print = func(s string) {
+        fmt.Println(count) //test delay
+    }
+    function.Delay(2*time.Second, print, "test delay")
 }
 ```
 
-
-
 ### <span id="Schedule">Schedule</span>
 
 <p>每次持续时间调用函数，直到关闭返回的 bool chan</p>
@@ -277,6 +366,7 @@ func main() {
 ```go
 func Schedule(d time.Duration, fn interface{}, args ...interface{}) chan bool
 ```
+
 <b>例子:</b>
 
 ```go
@@ -289,19 +379,59 @@ import (
 
 func main() {
     var res []string
-	appendStr := func(s string) {
-		res = append(res, s)
-	}
+    appendStr := func(s string) {
+        res = append(res, s)
+    }
 
-	stop := function.Schedule(1*time.Second, appendStr, "*")
-	time.Sleep(5 * time.Second)
-	close(stop)
+    stop := function.Schedule(1*time.Second, appendStr, "*")
+    time.Sleep(5 * time.Second)
+    close(stop)
 
     fmt.Println(res) //[* * * * *]
 }
 ```
 
+### <span id="Pipeline">Pipeline</span>
 
+<p>管道执行多个函数</p>
+
+<b>函数签名:</b>
+
+```go
+func Pipeline(funcs ...func(interface{}) interface{}) func(interface{}) interface{}
+```
+
+<b>例子:</b>
+
+```go
+package main
+
+import (
+    "fmt"
+    "github.com/duke-git/lancet/function"
+)
+
+func main() {
+    addOne := func(x interface{}) interface{} {
+        return x.(int) + 1
+    }
+    double := func(x interface{}) interface{} {
+        return 2 * x.(int)
+    }
+    square := func(x interface{}) interface{} {
+        return x.(int) * x.(int)
+    }
+
+    f := function.Pipeline(addOne, double, square)
+
+    result := fn(2)
+
+    fmt.Println(result)
+
+    // Output:
+    // 36
+}
+```
 
 ### <span id="Watcher">Watcher</span>
 
@@ -311,15 +441,16 @@ func main() {
 
 ```go
 type Watcher struct {
-	startTime int64
-	stopTime  int64
-	excuting  bool
+    startTime int64
+    stopTime  int64
+    excuting  bool
 }
 func (w *Watcher) Start() //start the watcher
 func (w *Watcher) Stop() //stop the watcher
 func (w *Watcher) Reset() //reset the watcher
 func (w *Watcher) GetElapsedTime() time.Duration //get the elapsed time of function execution
 ```
+
 <b>例子:</b>
 
 ```go
@@ -332,33 +463,30 @@ import (
 
 func main() {
     w := &function.Watcher{}
-	w.Start()
+    w.Start()
 
-	longRunningTask()
+    longRunningTask()
 
-	fmt.Println(w.excuting) //true
+    fmt.Println(w.excuting) //true
 
-	w.Stop()
+    w.Stop()
 
-	eapsedTime := w.GetElapsedTime().Milliseconds()
-	fmt.Println(eapsedTime)
+    eapsedTime := w.GetElapsedTime().Milliseconds()
+    fmt.Println(eapsedTime)
 
-	w.Reset()
+    w.Reset()
 
-	fmt.Println(w.excuting) //false
+    fmt.Println(w.excuting) //false
 
-	fmt.Println(w.startTime) //0
-	fmt.Println(w.stopTime) //0
+    fmt.Println(w.startTime) //0
+    fmt.Println(w.stopTime) //0
 }
 
 func longRunningTask() {
-	var slice []int64
-	for i := 0; i < 10000000; i++ {
-		slice = append(slice, int64(i))
-	}
+    var slice []int64
+    for i := 0; i < 10000000; i++ {
+        slice = append(slice, int64(i))
+    }
 }
 
 ```
-
-
-

docs/mathutil.md

@@ -1,4 +1,5 @@
 # Mathutil
+
 Package mathutil implements some functions for math calculation.
 
 <div STYLE="page-break-after: always;"></div>
@@ -7,10 +8,10 @@ Package mathutil implements some functions for math calculation.
 
 [https://github.com/duke-git/lancet/blob/v1/mathutil/mathutil.go](https://github.com/duke-git/lancet/blob/v1/mathutil/mathutil.go)
 
-
 <div STYLE="page-break-after: always;"></div>
 
 ## Example:
+
 ```go
 import (
     "github.com/duke-git/lancet/mathutil"
@@ -20,20 +21,34 @@ import (
 <div STYLE="page-break-after: always;"></div>
 
 ## Index
-- [Exponent](#Exponent)
-- [Fibonacci](#Fibonacci)
-- [Factorial](#Factorial)
-- [Percent](#Percent)
-- [RoundToFloat](#RoundToFloat)
-- [RoundToString](#RoundToString)
-- [TruncRound](#TruncRound)
+
+-   [Exponent](#Exponent)
+-   [Fibonacci](#Fibonacci)
+-   [Factorial](#Factorial)
+-   [Percent](#Percent)
+-   [RoundToFloat](#RoundToFloat)
+-   [RoundToString](#RoundToString)
+-   [TruncRound](#TruncRound)
+-   [CeilToFloat](#CeilToFloat)
+-   [CeilToString](#CeilToString)
+-   [FloorToFloat](#FloorToFloat)
+-   [FloorToString](#FloorToString)
+-   [AngleToRadian](#AngleToRadian)
+-   [RadianToAngle](#RadianToAngle)
+-   [PointDistance](#PointDistance)
+-   [IsPrime](#IsPrime)
+-   [GCD](#GCD)
+-   [LCM](#LCM)
+-   [Cos](#Cos)
+-   [Sin](#Sin)
+-   [Log](#Log)
 
 <div STYLE="page-break-after: always;"></div>
 
 ## Documentation
 
-
 ### <span id="Exponent">Exponent</span>
+
 <p>Calculate x to the nth power.</p>
 
 <b>Signature:</b>
@@ -41,6 +56,7 @@ import (
 ```go
 func Exponent(x, n int64) int64
 ```
+
 <b>Example:</b>
 
 ```go
@@ -52,15 +68,14 @@ import (
 )
 
 func main() {
-	fmt.Println(mathutil.Exponent(10, 0)) //1
-	fmt.Println(mathutil.Exponent(10, 1)) //10
-	fmt.Println(mathutil.Exponent(10, 2)) //100
+    fmt.Println(mathutil.Exponent(10, 0)) //1
+    fmt.Println(mathutil.Exponent(10, 1)) //10
+    fmt.Println(mathutil.Exponent(10, 2)) //100
 }
 ```
 
-
-
 ### <span id="Fibonacci">Fibonacci</span>
+
 <p>Calculate the nth number of fibonacci sequence.</p>
 
 <b>Signature:</b>
@@ -68,6 +83,7 @@ func main() {
 ```go
 func Fibonacci(first, second, n int) int
 ```
+
 <b>Example:</b>
 
 ```go
@@ -79,17 +95,16 @@ import (
 )
 
 func main() {
-	fmt.Println(mathutil.Fibonacci(1, 1, 1)) //1
-	fmt.Println(mathutil.Fibonacci(1, 1, 2)) //1
-	fmt.Println(mathutil.Fibonacci(1, 1, 3)) //2
-	fmt.Println(mathutil.Fibonacci(1, 1, 4)) //3
-	fmt.Println(mathutil.Fibonacci(1, 1, 5)) //5
+    fmt.Println(mathutil.Fibonacci(1, 1, 1)) //1
+    fmt.Println(mathutil.Fibonacci(1, 1, 2)) //1
+    fmt.Println(mathutil.Fibonacci(1, 1, 3)) //2
+    fmt.Println(mathutil.Fibonacci(1, 1, 4)) //3
+    fmt.Println(mathutil.Fibonacci(1, 1, 5)) //5
 }
 ```
 
-
-
 ### <span id="Factorial">Factorial</span>
+
 <p>Calculate the factorial of x.</p>
 
 <b>Signature:</b>
@@ -97,6 +112,7 @@ func main() {
 ```go
 func Factorial(x uint) uint
 ```
+
 <b>Example:</b>
 
 ```go
@@ -108,16 +124,15 @@ import (
 )
 
 func main() {
-	fmt.Println(mathutil.Factorial(0)) //1
-	fmt.Println(mathutil.Factorial(1)) //1
-	fmt.Println(mathutil.Factorial(2)) //2
-	fmt.Println(mathutil.Factorial(3)) //6
+    fmt.Println(mathutil.Factorial(0)) //1
+    fmt.Println(mathutil.Factorial(1)) //1
+    fmt.Println(mathutil.Factorial(2)) //2
+    fmt.Println(mathutil.Factorial(3)) //6
 }
 ```
 
-
-
 ### <span id="Percent">Percent</span>
+
 <p>calculate the percentage of val to total, retain n decimal places.</p>
 
 <b>Signature:</b>
@@ -125,6 +140,7 @@ func main() {
 ```go
 func Percent(val, total float64, n int) float64
 ```
+
 <b>Example:</b>
 
 ```go
@@ -136,14 +152,13 @@ import (
 )
 
 func main() {
-	fmt.Println(mathutil.Percent(1, 2, 2)) //1
-	fmt.Println(mathutil.Percent(0.1, 0.3, 2)) //33.33
+    fmt.Println(mathutil.Percent(1, 2, 2)) //1
+    fmt.Println(mathutil.Percent(0.1, 0.3, 2)) //33.33
 }
 ```
 
-
-
 ### <span id="RoundToFloat">RoundToFloat</span>
+
 <p>Round float up to n decimal places.</p>
 
 <b>Signature:</b>
@@ -151,6 +166,7 @@ func main() {
 ```go
 func RoundToFloat(x float64, n int) float64
 ```
+
 <b>Example:</b>
 
 ```go
@@ -162,18 +178,16 @@ import (
 )
 
 func main() {
-	fmt.Println(mathutil.RoundToFloat(0, 0)) //0
-	fmt.Println(mathutil.RoundToFloat(0, 1)) //0
-	fmt.Println(mathutil.RoundToFloat(0.124, 2)) //0.12
-	fmt.Println(mathutil.RoundToFloat(0.125, 2)) //0.13
-	fmt.Println(mathutil.RoundToFloat(0.125, 3)) //0.125
+    fmt.Println(mathutil.RoundToFloat(0, 0)) //0
+    fmt.Println(mathutil.RoundToFloat(0, 1)) //0
+    fmt.Println(mathutil.RoundToFloat(0.124, 2)) //0.12
+    fmt.Println(mathutil.RoundToFloat(0.125, 2)) //0.13
+    fmt.Println(mathutil.RoundToFloat(0.125, 3)) //0.125
 }
 ```
 
-
-
-
 ### <span id="RoundToString">RoundToString</span>
+
 <p>Round float up to n decimal places. will return string.</p>
 
 <b>Signature:</b>
@@ -181,6 +195,7 @@ func main() {
 ```go
 func RoundToString(x float64, n int) string
 ```
+
 <b>Example:</b>
 
 ```go
@@ -192,17 +207,16 @@ import (
 )
 
 func main() {
-	fmt.Println(mathutil.RoundToString(0, 0)) //"0"
-	fmt.Println(mathutil.RoundToString(0, 1)) //"0.0:
-	fmt.Println(mathutil.RoundToString(0.124, 2)) //"0.12"
-	fmt.Println(mathutil.RoundToString(0.125, 2)) //"0.13"
-	fmt.Println(mathutil.RoundToString(0.125, 3)) //"0.125"
+    fmt.Println(mathutil.RoundToString(0, 0)) //"0"
+    fmt.Println(mathutil.RoundToString(0, 1)) //"0.0:
+    fmt.Println(mathutil.RoundToString(0.124, 2)) //"0.12"
+    fmt.Println(mathutil.RoundToString(0.125, 2)) //"0.13"
+    fmt.Println(mathutil.RoundToString(0.125, 3)) //"0.125"
 }
 ```
 
-
-
 ### <span id="TruncRound">TruncRound</span>
+
 <p>Round float off n decimal places.</p>
 
 <b>Signature:</b>
@@ -210,6 +224,7 @@ func main() {
 ```go
 func TruncRound(x float64, n int) float64
 ```
+
 <b>Example:</b>
 
 ```go
@@ -221,13 +236,493 @@ import (
 )
 
 func main() {
-	fmt.Println(mathutil.TruncRound(0, 0)) //0
-	fmt.Println(mathutil.TruncRound(0, 1)) //0
-	fmt.Println(mathutil.TruncRound(0.124, 2)) //0.12
-	fmt.Println(mathutil.TruncRound(0.125, 2)) //0.12
-	fmt.Println(mathutil.TruncRound(0.125, 3)) //0.125
+    fmt.Println(mathutil.TruncRound(0, 0)) //0
+    fmt.Println(mathutil.TruncRound(0, 1)) //0
+    fmt.Println(mathutil.TruncRound(0.124, 2)) //0.12
+    fmt.Println(mathutil.TruncRound(0.125, 2)) //0.12
+    fmt.Println(mathutil.TruncRound(0.125, 3)) //0.125
 }
 ```
 
+### <span id="CeilToFloat">CeilToFloat</span>
 
+<p>Round float up n decimal places.</p>
 
+<b>Signature:</b>
+
+```go
+func CeilToFloat(x float64, n int) float64
+```
+
+<b>Example:</b>
+
+```go
+package main
+
+import (
+    "fmt"
+    "github.com/duke-git/lancet/mathutil"
+)
+
+func main() {
+	result1 := mathutil.CeilToFloat(3.14159, 1)
+	result2 := mathutil.CeilToFloat(3.14159, 2)
+	result3 := mathutil.CeilToFloat(5, 4)
+
+	fmt.Println(result1)
+	fmt.Println(result2)
+	fmt.Println(result3)
+
+	// Output:
+	// 3.2
+	// 3.15
+	// 5
+}
+```
+
+### <span id="CeilToString">CeilToString</span>
+
+<p>Round float up n decimal places.</p>
+
+<b>Signature:</b>
+
+```go
+func CeilToString(x float64, n int) string
+```
+
+<b>Example:</b>
+
+```go
+package main
+
+import (
+    "fmt"
+    "github.com/duke-git/lancet/mathutil"
+)
+
+func main() {
+	result1 := mathutil.CeilToString(3.14159, 1)
+	result2 := mathutil.CeilToString(3.14159, 2)
+	result3 := mathutil.CeilToString(5, 4)
+
+	fmt.Println(result1)
+	fmt.Println(result2)
+	fmt.Println(result3)
+
+	// Output:
+	// 3.2
+	// 3.15
+	// 5.0000
+}
+```
+
+### <span id="FloorToFloat">FloorToFloat</span>
+
+<p>Round float down n decimal places.</p>
+
+<b>Signature:</b>
+
+```go
+func CeilToString(x float64, n int) string
+```
+
+<b>Example:</b>
+
+```go
+package main
+
+import (
+    "fmt"
+    "github.com/duke-git/lancet/mathutil"
+)
+
+func main() {
+	result1 := mathutil.FloorToFloat(3.14159, 1)
+	result2 := mathutil.FloorToFloat(3.14159, 2)
+	result3 := mathutil.FloorToFloat(5, 4)
+
+	fmt.Println(result1)
+	fmt.Println(result2)
+	fmt.Println(result3)
+
+	// Output:
+	// 3.1
+	// 3.14
+	// 5
+}
+```
+
+### <span id="FloorToString">FloorToString</span>
+
+<p>Round float down n decimal places.</p>
+
+<b>Signature:</b>
+
+```go
+func CeilToString(x float64, n int) string
+```
+
+<b>Example:</b>
+
+```go
+package main
+
+import (
+    "fmt"
+    "github.com/duke-git/lancet/mathutil"
+)
+
+func main() {
+	result1 := mathutil.FloorToString(3.14159, 1)
+	result2 := mathutil.FloorToString(3.14159, 2)
+	result3 := mathutil.FloorToString(5, 4)
+
+	fmt.Println(result1)
+	fmt.Println(result2)
+	fmt.Println(result3)
+
+	// Output:
+	// 3.1
+	// 3.14
+	// 5.0000
+}
+```
+
+### <span id="AngleToRadian">AngleToRadian</span>
+
+<p>Converts angle value to radian value.</p>
+
+<b>Signature:</b>
+
+```go
+func AngleToRadian(angle float64) float64
+```
+
+<b>Example:</b>
+
+```go
+package main
+
+import (
+    "fmt"
+    "github.com/duke-git/lancet/mathutil"
+)
+
+func main() {
+    result1 := mathutil.AngleToRadian(45)
+    result2 := mathutil.AngleToRadian(90)
+    result3 := mathutil.AngleToRadian(180)
+
+    fmt.Println(result1)
+    fmt.Println(result2)
+    fmt.Println(result3)
+
+    // Output:
+    // 0.7853981633974483
+    // 1.5707963267948966
+    // 3.141592653589793
+}
+```
+
+### <span id="RadianToAngle">RadianToAngle</span>
+
+<p>Converts radian value to angle value.</p>
+
+<b>Signature:</b>
+
+```go
+func RadianToAngle(radian float64) float64
+```
+
+<b>Example:</b>
+
+```go
+package main
+
+import (
+    "fmt"
+    "github.com/duke-git/lancet/mathutil"
+)
+
+func main() {
+    result1 := mathutil.RadianToAngle(math.Pi)
+    result2 := mathutil.RadianToAngle(math.Pi / 2)
+    result3 := mathutil.RadianToAngle(math.Pi / 4)
+
+    fmt.Println(result1)
+    fmt.Println(result2)
+    fmt.Println(result3)
+
+    // Output:
+    // 180
+    // 90
+    // 45
+}
+```
+
+### <span id="PointDistance">PointDistance</span>
+
+<p>Caculates two points distance.</p>
+
+<b>Signature:</b>
+
+```go
+func PointDistance(x1, y1, x2, y2 float64) float64
+```
+
+<b>Example:</b>
+
+```go
+package main
+
+import (
+    "fmt"
+    "github.com/duke-git/lancet/mathutil"
+)
+
+func main() {
+    result1 := mathutil.PointDistance(1, 1, 4, 5)
+
+    fmt.Println(result1)
+
+    // Output:
+    // 5
+}
+```
+
+### <span id="IsPrime">IsPrime</span>
+
+<p>Checks if number is prime number.</p>
+
+<b>Signature:</b>
+
+```go
+func IsPrime(n int) bool
+```
+
+<b>Example:</b>
+
+```go
+package main
+
+import (
+    "fmt"
+    "github.com/duke-git/lancet/mathutil"
+)
+
+func main() {
+    result1 := mathutil.IsPrime(-1)
+    result2 := mathutil.IsPrime(0)
+    result3 := mathutil.IsPrime(1)
+    result4 := mathutil.IsPrime(2)
+
+    fmt.Println(result1)
+    fmt.Println(result2)
+    fmt.Println(result3)
+    fmt.Println(result4)
+
+    // Output:
+    // false
+    // false
+    // false
+    // true
+}
+```
+
+### <span id="GCD">GCD</span>
+
+<p>Return greatest common divisor (GCD) of integers.</p>
+
+<b>Signature:</b>
+
+```go
+func GCD(integers ...int) int
+```
+
+<b>Example:</b>
+
+```go
+package main
+
+import (
+    "fmt"
+    "github.com/duke-git/lancet/mathutil"
+)
+
+func main() {
+    result1 := mathutil.GCD(1, 1)
+    result2 := mathutil.GCD(1, -1)
+    result3 := mathutil.GCD(-1, 1)
+    result4 := mathutil.GCD(-1, -1)
+    result5 := mathutil.GCD(3, 6, 9)
+
+    fmt.Println(result1)
+    fmt.Println(result2)
+    fmt.Println(result3)
+    fmt.Println(result4)
+    fmt.Println(result5)
+
+    // Output:
+    // 1
+    // 1
+    // -1
+    // -1
+    // 3
+}
+```
+
+### <span id="LCM">LCM</span>
+
+<p>Return Least Common Multiple (LCM) of integers.</p>
+
+<b>Signature:</b>
+
+```go
+func LCM(integers ...int) int
+```
+
+<b>Example:</b>
+
+```go
+package main
+
+import (
+    "fmt"
+    "github.com/duke-git/lancet/mathutil"
+)
+
+func main() {
+    result1 := mathutil.LCM(1, 1)
+    result2 := mathutil.LCM(1, 2)
+    result3 := mathutil.LCM(3, 6, 9)
+
+    fmt.Println(result1)
+    fmt.Println(result2)
+    fmt.Println(result3)
+
+    // Output:
+    // 1
+    // 2
+    // 18
+}
+```
+
+### <span id="Cos">Cos</span>
+
+<p>Returns the cosine of the radian argument.</p>
+
+<b>Signature:</b>
+
+```go
+func Cos(radian float64, precision ...int) float64
+```
+
+<b>Example:</b>
+
+```go
+package main
+
+import (
+    "fmt"
+    "github.com/duke-git/lancet/mathutil"
+)
+
+func main() {
+    result1 := mathutil.Cos(0)
+    result2 := mathutil.Cos(90)
+    result3 := mathutil.Cos(180)
+    result4 := mathutil.Cos(math.Pi)
+    result5 := mathutil.Cos(math.Pi / 2)
+
+    fmt.Println(result1)
+    fmt.Println(result2)
+    fmt.Println(result3)
+    fmt.Println(result4)
+    fmt.Println(result5)
+
+    // Output:
+    // 1
+    // -0.447
+    // -0.598
+    // -1
+    // 0
+}
+```
+
+### <span id="Sin">Sin</span>
+
+<p>Returns the sine of the radian argument.</p>
+
+<b>Signature:</b>
+
+```go
+func Sin(radian float64, precision ...int) float64
+```
+
+<b>Example:</b>
+
+```go
+package main
+
+import (
+    "fmt"
+    "github.com/duke-git/lancet/mathutil"
+)
+
+func main() {
+    result1 := mathutil.Sin(0)
+    result2 := mathutil.Sin(90)
+    result3 := mathutil.Sin(180)
+    result4 := mathutil.Sin(math.Pi)
+    result5 := mathutil.Sin(math.Pi / 2)
+
+    fmt.Println(result1)
+    fmt.Println(result2)
+    fmt.Println(result3)
+    fmt.Println(result4)
+    fmt.Println(result5)
+
+    // Output:
+    // 0
+    // 0.894
+    // -0.801
+    // 0
+    // 1
+}
+```
+
+### <span id="Log">Log</span>
+
+<p>Returns the logarithm of base n.</p>
+
+<b>Signature:</b>
+
+```go
+func Log(n, base float64) float64
+```
+
+<b>Example:</b>
+
+```go
+package main
+
+import (
+    "fmt"
+    "github.com/duke-git/lancet/mathutil"
+)
+
+func main() {
+    result1 := mathutil.Log(8, 2)
+    result2 := mathutil.TruncRound(mathutil.Log(5, 2), 2)
+    result3 := mathutil.TruncRound(mathutil.Log(27, 3), 0)
+
+    fmt.Println(result1)
+    fmt.Println(result2)
+    fmt.Println(result3)
+
+    // Output:
+    // 3
+    // 2.32
+    // 3
+}
+```

docs/mathutil_zh-CN.md

@@ -1,5 +1,6 @@
 # Mathutil
-mathutil包实现了一些数学计算的函数.
+
+mathutil 包实现了一些数学计算的函数.
 
 <div STYLE="page-break-after: always;"></div>
 
@@ -7,10 +8,10 @@ mathutil包实现了一些数学计算的函数.
 
 [https://github.com/duke-git/lancet/blob/v1/mathutil/mathutil.go](https://github.com/duke-git/lancet/blob/v1/mathutil/mathutil.go)
 
-
 <div STYLE="page-break-after: always;"></div>
 
 ## 用法:
+
 ```go
 import (
     "github.com/duke-git/lancet/mathutil"
@@ -20,21 +21,34 @@ import (
 <div STYLE="page-break-after: always;"></div>
 
 ## 目录
-- [Exponent](#Exponent)
-- [Fibonacci](#Fibonacci)
-- [Factorial](#Factorial)
 
-- [Percent](#Percent)
-- [RoundToFloat](#RoundToFloat)
-- [RoundToString](#RoundToString)
-- [TruncRound](#TruncRound)
+-   [Exponent](#Exponent)
+-   [Fibonacci](#Fibonacci)
+-   [Factorial](#Factorial)
+-   [Percent](#Percent)
+-   [RoundToFloat](#RoundToFloat)
+-   [RoundToString](#RoundToString)
+-   [TruncRound](#TruncRound)
+-   [CeilToFloat](#CeilToFloat)
+-   [CeilToString](#CeilToString)
+-   [FloorToFloat](#FloorToFloat)
+-   [FloorToString](#FloorToString)
+-   [AngleToRadian](#AngleToRadian)
+-   [RadianToAngle](#RadianToAngle)
+-   [PointDistance](#PointDistance)
+-   [IsPrime](#IsPrime)
+-   [GCD](#GCD)
+-   [LCM](#LCM)
+-   [Cos](#Cos)
+-   [Sin](#Sin)
+-   [Log](#Log)
 
 <div STYLE="page-break-after: always;"></div>
 
 ## Documentation
 
-
 ### <span id="Exponent">Exponent</span>
+
 <p>指数计算（x的n次方）</p>
 
 <b>函数签名:</b>
@@ -42,6 +56,7 @@ import (
 ```go
 func Exponent(x, n int64) int64
 ```
+
 <b>例子:</b>
 
 ```go
@@ -53,15 +68,14 @@ import (
 )
 
 func main() {
-	fmt.Println(mathutil.Exponent(10, 0)) //1
-	fmt.Println(mathutil.Exponent(10, 1)) //10
-	fmt.Println(mathutil.Exponent(10, 2)) //100
+    fmt.Println(mathutil.Exponent(10, 0)) //1
+    fmt.Println(mathutil.Exponent(10, 1)) //10
+    fmt.Println(mathutil.Exponent(10, 2)) //100
 }
 ```
 
-
-
 ### <span id="Fibonacci">Fibonacci</span>
+
 <p>计算斐波那契数列的第n个数</p>
 
 <b>函数签名:</b>
@@ -69,6 +83,7 @@ func main() {
 ```go
 func Fibonacci(first, second, n int) int
 ```
+
 <b>例子:</b>
 
 ```go
@@ -80,17 +95,16 @@ import (
 )
 
 func main() {
-	fmt.Println(mathutil.Fibonacci(1, 1, 1)) //1
-	fmt.Println(mathutil.Fibonacci(1, 1, 2)) //1
-	fmt.Println(mathutil.Fibonacci(1, 1, 3)) //2
-	fmt.Println(mathutil.Fibonacci(1, 1, 4)) //3
-	fmt.Println(mathutil.Fibonacci(1, 1, 5)) //5
+    fmt.Println(mathutil.Fibonacci(1, 1, 1)) //1
+    fmt.Println(mathutil.Fibonacci(1, 1, 2)) //1
+    fmt.Println(mathutil.Fibonacci(1, 1, 3)) //2
+    fmt.Println(mathutil.Fibonacci(1, 1, 4)) //3
+    fmt.Println(mathutil.Fibonacci(1, 1, 5)) //5
 }
 ```
 
-
-
 ### <span id="Factorial">Factorial</span>
+
 <p>计算阶乘</p>
 
 <b>函数签名:</b>
@@ -98,6 +112,7 @@ func main() {
 ```go
 func Factorial(x uint) uint
 ```
+
 <b>例子:</b>
 
 ```go
@@ -109,16 +124,15 @@ import (
 )
 
 func main() {
-	fmt.Println(mathutil.Factorial(0)) //1
-	fmt.Println(mathutil.Factorial(1)) //1
-	fmt.Println(mathutil.Factorial(2)) //2
-	fmt.Println(mathutil.Factorial(3)) //6
+    fmt.Println(mathutil.Factorial(0)) //1
+    fmt.Println(mathutil.Factorial(1)) //1
+    fmt.Println(mathutil.Factorial(2)) //2
+    fmt.Println(mathutil.Factorial(3)) //6
 }
 ```
 
-
-
 ### <span id="Percent">Percent</span>
+
 <p>计算百分比，保留n位小数</p>
 
 <b>函数签名:</b>
@@ -126,6 +140,7 @@ func main() {
 ```go
 func Percent(val, total float64, n int) float64
 ```
+
 <b>例子:</b>
 
 ```go
@@ -137,14 +152,13 @@ import (
 )
 
 func main() {
-	fmt.Println(mathutil.Percent(1, 2, 2)) //1
-	fmt.Println(mathutil.Percent(0.1, 0.3, 2)) //33.33
+    fmt.Println(mathutil.Percent(1, 2, 2)) //1
+    fmt.Println(mathutil.Percent(0.1, 0.3, 2)) //33.33
 }
 ```
 
-
-
 ### <span id="RoundToFloat">RoundToFloat</span>
+
 <p>四舍五入，保留n位小数</p>
 
 <b>函数签名:</b>
@@ -152,6 +166,7 @@ func main() {
 ```go
 func RoundToFloat(x float64, n int) float64
 ```
+
 <b>例子:</b>
 
 ```go
@@ -163,18 +178,16 @@ import (
 )
 
 func main() {
-	fmt.Println(mathutil.RoundToFloat(0, 0)) //0
-	fmt.Println(mathutil.RoundToFloat(0, 1)) //0
-	fmt.Println(mathutil.RoundToFloat(0.124, 2)) //0.12
-	fmt.Println(mathutil.RoundToFloat(0.125, 2)) //0.13
-	fmt.Println(mathutil.RoundToFloat(0.125, 3)) //0.125
+    fmt.Println(mathutil.RoundToFloat(0, 0)) //0
+    fmt.Println(mathutil.RoundToFloat(0, 1)) //0
+    fmt.Println(mathutil.RoundToFloat(0.124, 2)) //0.12
+    fmt.Println(mathutil.RoundToFloat(0.125, 2)) //0.13
+    fmt.Println(mathutil.RoundToFloat(0.125, 3)) //0.125
 }
 ```
 
-
-
-
 ### <span id="RoundToString">RoundToString</span>
+
 <p>四舍五入，保留n位小数，返回字符串</p>
 
 <b>函数签名:</b>
@@ -182,6 +195,7 @@ func main() {
 ```go
 func RoundToString(x float64, n int) string
 ```
+
 <b>例子:</b>
 
 ```go
@@ -193,17 +207,16 @@ import (
 )
 
 func main() {
-	fmt.Println(mathutil.RoundToString(0, 0)) //"0"
-	fmt.Println(mathutil.RoundToString(0, 1)) //"0.0:
-	fmt.Println(mathutil.RoundToString(0.124, 2)) //"0.12"
-	fmt.Println(mathutil.RoundToString(0.125, 2)) //"0.13"
-	fmt.Println(mathutil.RoundToString(0.125, 3)) //"0.125"
+    fmt.Println(mathutil.RoundToString(0, 0)) //"0"
+    fmt.Println(mathutil.RoundToString(0, 1)) //"0.0:
+    fmt.Println(mathutil.RoundToString(0.124, 2)) //"0.12"
+    fmt.Println(mathutil.RoundToString(0.125, 2)) //"0.13"
+    fmt.Println(mathutil.RoundToString(0.125, 3)) //"0.125"
 }
 ```
 
-
-
 ### <span id="TruncRound">TruncRound</span>
+
 <p>截短n位小数（不进行四舍五入）</p>
 
 <b>函数签名:</b>
@@ -211,6 +224,7 @@ func main() {
 ```go
 func TruncRound(x float64, n int) float64
 ```
+
 <b>例子:</b>
 
 ```go
@@ -222,13 +236,497 @@ import (
 )
 
 func main() {
-	fmt.Println(mathutil.TruncRound(0, 0)) //0
-	fmt.Println(mathutil.TruncRound(0, 1)) //0
-	fmt.Println(mathutil.TruncRound(0.124, 2)) //0.12
-	fmt.Println(mathutil.TruncRound(0.125, 2)) //0.12
-	fmt.Println(mathutil.TruncRound(0.125, 3)) //0.125
+    fmt.Println(mathutil.TruncRound(0, 0)) //0
+    fmt.Println(mathutil.TruncRound(0, 1)) //0
+    fmt.Println(mathutil.TruncRound(0.124, 2)) //0.12
+    fmt.Println(mathutil.TruncRound(0.125, 2)) //0.12
+    fmt.Println(mathutil.TruncRound(0.125, 3)) //0.125
+}
+```
+
+### <span id="CeilToFloat">CeilToFloat</span>
+
+<p>向上舍入（进一法），保留n位小数。</p>
+
+<b>函数签名:</b>
+
+```go
+func CeilToFloat(x float64, n int) float64
+```
+
+<b>示例:</b>
+
+```go
+package main
+
+import (
+    "fmt"
+    "github.com/duke-git/lancet/mathutil"
+)
+
+func main() {
+    result1 := mathutil.CeilToFloat(3.14159, 1)
+    result2 := mathutil.CeilToFloat(3.14159, 2)
+    result3 := mathutil.CeilToFloat(5, 4)
+
+    fmt.Println(result1)
+    fmt.Println(result2)
+    fmt.Println(result3)
+
+    // Output:
+    // 3.2
+    // 3.15
+    // 5
+}
+```
+
+### <span id="CeilToString">CeilToString</span>
+
+<p>向上舍入（进一法），保留n位小数，返回字符串。</p>
+
+<b>函数签名:</b>
+
+```go
+func CeilToString(x float64, n int) string
+```
+
+<b>示例:</b>
+
+```go
+package main
+
+import (
+    "fmt"
+    "github.com/duke-git/lancet/mathutil"
+)
+
+func main() {
+    result1 := mathutil.CeilToString(3.14159, 1)
+    result2 := mathutil.CeilToString(3.14159, 2)
+    result3 := mathutil.CeilToString(5, 4)
+
+    fmt.Println(result1)
+    fmt.Println(result2)
+    fmt.Println(result3)
+
+    // Output:
+    // 3.2
+    // 3.15
+    // 5.0000
+}
+```
+
+### <span id="FloorToFloat">FloorToFloat</span>
+
+<p>向下舍入（去尾法），保留n位小数。</p>
+
+<b>函数签名:</b>
+
+```go
+func CeilToString(x float64, n int) string
+```
+
+<b>示例:</b>
+
+```go
+package main
+
+import (
+    "fmt"
+    "github.com/duke-git/lancet/mathutil"
+)
+
+func main() {
+    result1 := mathutil.FloorToFloat(3.14159, 1)
+    result2 := mathutil.FloorToFloat(3.14159, 2)
+    result3 := mathutil.FloorToFloat(5, 4)
+
+    fmt.Println(result1)
+    fmt.Println(result2)
+    fmt.Println(result3)
+
+    // Output:
+    // 3.1
+    // 3.14
+    // 5
+}
+```
+
+### <span id="FloorToString">FloorToString</span>
+
+<p>向下舍入（去尾法），保留n位小数，返回字符串。</p>
+
+<b>函数签名:</b>
+
+```go
+func CeilToString(x float64, n int) string
+```
+
+<b>示例:</b>
+
+```go
+package main
+
+import (
+    "fmt"
+    "github.com/duke-git/lancet/mathutil"
+)
+
+func main() {
+    result1 := mathutil.FloorToString(3.14159, 1)
+    result2 := mathutil.FloorToString(3.14159, 2)
+    result3 := mathutil.FloorToString(5, 4)
+
+    fmt.Println(result1)
+    fmt.Println(result2)
+    fmt.Println(result3)
+
+    // Output:
+    // 3.1
+    // 3.14
+    // 5.0000
 }
 ```
 
 
+### <span id="AngleToRadian">AngleToRadian</span>
 
+<p>将角度值转为弧度值</p>
+
+<b>函数签名:</b>
+
+```go
+func AngleToRadian(angle float64) float64
+```
+
+<b>示例:</b>
+
+```go
+package main
+
+import (
+    "fmt"
+    "github.com/duke-git/lancet/mathutil"
+)
+
+func main() {
+    result1 := mathutil.AngleToRadian(45)
+    result2 := mathutil.AngleToRadian(90)
+    result3 := mathutil.AngleToRadian(180)
+
+    fmt.Println(result1)
+    fmt.Println(result2)
+    fmt.Println(result3)
+
+    // Output:
+    // 0.7853981633974483
+    // 1.5707963267948966
+    // 3.141592653589793
+}
+```
+
+### <span id="RadianToAngle">RadianToAngle</span>
+
+<p>将弧度值转为角度值</p>
+
+<b>函数签名:</b>
+
+```go
+func RadianToAngle(radian float64) float64
+```
+
+<b>示例:</b>
+
+```go
+package main
+
+import (
+    "fmt"
+    "github.com/duke-git/lancet/mathutil"
+)
+
+func main() {
+    result1 := mathutil.RadianToAngle(math.Pi)
+    result2 := mathutil.RadianToAngle(math.Pi / 2)
+    result3 := mathutil.RadianToAngle(math.Pi / 4)
+
+    fmt.Println(result1)
+    fmt.Println(result2)
+    fmt.Println(result3)
+
+    // Output:
+    // 180
+    // 90
+    // 45
+}
+```
+
+### <span id="PointDistance">PointDistance</span>
+
+<p>计算两个坐标点的距离</p>
+
+<b>函数签名:</b>
+
+```go
+func PointDistance(x1, y1, x2, y2 float64) float64
+```
+
+<b>示例:</b>
+
+```go
+package main
+
+import (
+    "fmt"
+    "github.com/duke-git/lancet/mathutil"
+)
+
+func main() {
+    result1 := mathutil.PointDistance(1, 1, 4, 5)
+
+    fmt.Println(result1)
+
+    // Output:
+    // 5
+}
+```
+
+### <span id="IsPrime">IsPrime</span>
+
+<p>判断质数。</p>
+
+<b>函数签名:</b>
+
+```go
+func IsPrime(n int) bool
+```
+
+<b>示例:</b>
+
+```go
+package main
+
+import (
+    "fmt"
+    "github.com/duke-git/lancet/mathutil"
+)
+
+func main() {
+    result1 := mathutil.IsPrime(-1)
+    result2 := mathutil.IsPrime(0)
+    result3 := mathutil.IsPrime(1)
+    result4 := mathutil.IsPrime(2)
+
+    fmt.Println(result1)
+    fmt.Println(result2)
+    fmt.Println(result3)
+    fmt.Println(result4)
+
+    // Output:
+    // false
+    // false
+    // false
+    // true
+}
+```
+
+
+### <span id="GCD">GCD</span>
+
+<p>计算整数最大公约数。</p>
+
+<b>函数签名:</b>
+
+```go
+func GCD(integers ...int) int
+```
+
+<b>示例:</b>
+
+```go
+package main
+
+import (
+    "fmt"
+    "github.com/duke-git/lancet/mathutil"
+)
+
+func main() {
+    result1 := mathutil.GCD(1, 1)
+    result2 := mathutil.GCD(1, -1)
+    result3 := mathutil.GCD(-1, 1)
+    result4 := mathutil.GCD(-1, -1)
+    result5 := mathutil.GCD(3, 6, 9)
+
+    fmt.Println(result1)
+    fmt.Println(result2)
+    fmt.Println(result3)
+    fmt.Println(result4)
+    fmt.Println(result5)
+
+    // Output:
+    // 1
+    // 1
+    // -1
+    // -1
+    // 3
+}
+```
+
+### <span id="LCM">LCM</span>
+
+<p>计算整数最小公倍数。</p>
+
+<b>函数签名:</b>
+
+```go
+func LCM(integers ...int) int
+```
+
+<b>示例:</b>
+
+```go
+package main
+
+import (
+    "fmt"
+    "github.com/duke-git/lancet/mathutil"
+)
+
+func main() {
+    result1 := mathutil.LCM(1, 1)
+    result2 := mathutil.LCM(1, 2)
+    result3 := mathutil.LCM(3, 6, 9)
+
+    fmt.Println(result1)
+    fmt.Println(result2)
+    fmt.Println(result3)
+
+    // Output:
+    // 1
+    // 2
+    // 18
+}
+```
+
+
+### <span id="Cos">Cos</span>
+
+<p>计算弧度的余弦值。</p>
+
+<b>函数签名:</b>
+
+```go
+func Cos(radian float64, precision ...int) float64
+```
+
+<b>示例:</b>
+
+```go
+package main
+
+import (
+    "fmt"
+    "github.com/duke-git/lancet/mathutil"
+)
+
+func main() {
+    result1 := mathutil.Cos(0)
+    result2 := mathutil.Cos(90)
+    result3 := mathutil.Cos(180)
+    result4 := mathutil.Cos(math.Pi)
+    result5 := mathutil.Cos(math.Pi / 2)
+
+    fmt.Println(result1)
+    fmt.Println(result2)
+    fmt.Println(result3)
+    fmt.Println(result4)
+    fmt.Println(result5)
+
+    // Output:
+    // 1
+    // -0.447
+    // -0.598
+    // -1
+    // 0
+}
+```
+
+
+### <span id="Sin">Sin</span>
+
+<p>计算弧度的正弦值。</p>
+
+<b>函数签名:</b>
+
+```go
+func Sin(radian float64, precision ...int) float64
+```
+
+<b>示例:</b>
+
+```go
+package main
+
+import (
+    "fmt"
+    "github.com/duke-git/lancet/mathutil"
+)
+
+func main() {
+    result1 := mathutil.Sin(0)
+    result2 := mathutil.Sin(90)
+    result3 := mathutil.Sin(180)
+    result4 := mathutil.Sin(math.Pi)
+    result5 := mathutil.Sin(math.Pi / 2)
+
+    fmt.Println(result1)
+    fmt.Println(result2)
+    fmt.Println(result3)
+    fmt.Println(result4)
+    fmt.Println(result5)
+
+    // Output:
+    // 0
+    // 0.894
+    // -0.801
+    // 0
+    // 1
+}
+```
+
+### <span id="Log">Log</span>
+
+<p>计算以base为底n的对数。</p>
+
+<b>函数签名:</b>
+
+```go
+func Log(n, base float64) float64
+```
+
+<b>示例:</b>
+
+```go
+package main
+
+import (
+    "fmt"
+    "github.com/duke-git/lancet/mathutil"
+)
+
+func main() {
+    result1 := mathutil.Log(8, 2)
+    result2 := mathutil.TruncRound(mathutil.Log(5, 2), 2)
+    result3 := mathutil.TruncRound(mathutil.Log(27, 3), 0)
+
+    fmt.Println(result1)
+    fmt.Println(result2)
+    fmt.Println(result3)
+
+    // Output:
+    // 3
+    // 2.32
+    // 3
+}
+```

docs/random.md

@@ -30,6 +30,13 @@ import (
 -   [RandNumeral](#RandNumeral)
 -   [RandNumeralOrLetter](#RandNumeralOrLetter)
 -   [UUIdV4](#UUIdV4)
+-   [RandFloat](#RandFloat)
+-   [RandFloats](#RandFloats)
+-   [RandUniqueIntSlice](#RandUniqueIntSlice)
+-   [RandIntSlice](#RandIntSlice)
+-   [RandStringSlice](#RandStringSlice)
+-   [RandBool](#RandBool)
+-   [RandBoolSlice](#RandBoolSlice)
 
 <div STYLE="page-break-after: always;"></div>
 
@@ -56,8 +63,8 @@ import (
 )
 
 func main() {
-	randBytes := random.RandBytes(4)
-	fmt.Println(randBytes)
+    randBytes := random.RandBytes(4)
+    fmt.Println(randBytes)
 }
 ```
 
@@ -82,8 +89,8 @@ import (
 )
 
 func main() {
-	rInt := random.RandInt(1, 10)
-	fmt.Println(rInt)
+    rInt := random.RandInt(1, 10)
+    fmt.Println(rInt)
 }
 ```
 
@@ -108,8 +115,8 @@ import (
 )
 
 func main() {
-	randStr := random.RandString(6)
-	fmt.Println(randStr) //pGWsze
+    randStr := random.RandString(6)
+    fmt.Println(randStr) //pGWsze
 }
 ```
 
@@ -134,8 +141,8 @@ import (
 )
 
 func main() {
-	randStr := random.RandString(6)
-	fmt.Println(randStr) //PACWGF
+    randStr := random.RandString(6)
+    fmt.Println(randStr) //PACWGF
 }
 ```
 
@@ -160,8 +167,8 @@ import (
 )
 
 func main() {
-	randStr := random.RandLower(6)
-	fmt.Println(randStr) //siqbew
+    randStr := random.RandLower(6)
+    fmt.Println(randStr) //siqbew
 }
 ```
 
@@ -186,8 +193,8 @@ import (
 )
 
 func main() {
-	randStr := random.RandNumeral(6)
-	fmt.Println(randStr) //035172
+    randStr := random.RandNumeral(6)
+    fmt.Println(randStr) //035172
 }
 ```
 
@@ -212,8 +219,8 @@ import (
 )
 
 func main() {
-	randStr := random.RandNumeralOrLetter(6)
-	fmt.Println(randStr) //0aW7cQ
+    randStr := random.RandNumeralOrLetter(6)
+    fmt.Println(randStr) //0aW7cQ
 }
 ```
 
@@ -238,10 +245,195 @@ import (
 )
 
 func main() {
-	uuid, err := random.UUIdV4()
+    uuid, err := random.UUIdV4()
     if err != nil {
         return
     }
-	fmt.Println(uuid)
+    fmt.Println(uuid)
 }
 ```
+
+### <span id="RandFloat">RandFloat</span>
+
+<p>Generate a random float64 number between [min, max) with specific precision.</p>
+
+<b>Signature:</b>
+
+```go
+func RandFloat(min, max float64, precision int) float64
+```
+
+<b>Example:<span style="float:right;display:inline-block;">[Run](https://go.dev/play/p/zbD_tuobJtr)</span></b>
+
+```go
+package main
+
+import (
+    "fmt"
+    "github.com/duke-git/lancet/random"
+)
+
+func main() {
+    floatNumber := random.RandFloat(1.0, 5.0, 2)
+    fmt.Println(floatNumber) //2.14 (random number)
+}
+```
+
+### <span id="RandFloats">RandFloats</span>
+
+<p>Generate a slice of random float64 numbers of length n that do not repeat. Number range in [min, max)</p>
+
+<b>Signature:</b>
+
+```go
+func RandFloats(length int, min, max float64, precision int) []float64
+```
+
+<b>Example:<span style="float:right;display:inline-block;">[Run](https://go.dev/play/p/I3yndUQ-rhh)</span></b>
+
+```go
+package main
+
+import (
+    "fmt"
+    "github.com/duke-git/lancet/random"
+)
+
+func main() {
+    floatNumbers := random.RandFloats(5, 1.0, 5.0, 2)
+    fmt.Println(floatNumbers) //[3.42 3.99 1.3 2.38 4.23] (random)
+}
+```
+
+### <span id="RandUniqueIntSlice">RandUniqueIntSlice</span>
+
+<p>Generate a slice of random int of length n that do not repeat.</p>
+
+<b>Signature:</b>
+
+```go
+func RandUniqueIntSlice(n, min, max int) []int
+```
+
+<b>Example:</b>
+
+```go
+package main
+
+import (
+    "fmt"
+    "github.com/duke-git/lancet/random"
+)
+
+func main() {
+    result := RandUniqueIntSlice(5, 0, 10)
+    fmt.Println(result) //[0 4 7 1 5] (random)
+}
+```
+
+### <span id="RandIntSlice">RandIntSlice</span>
+
+<p>Generate a slice of random int. Number range in [min, max)</p>
+
+<b>Signature:</b>
+
+```go
+func RandIntSlice(length, min, max int) []int
+```
+
+<b>Example:</b>
+
+```go
+package main
+
+import (
+    "fmt"
+    "github.com/duke-git/lancet/random"
+)
+
+func main() {
+    result := random.RandIntSlice(5, 0, 10)
+    fmt.Println(result) //[1 4 7 1 5] (random)
+}
+```
+
+### <span id="RandStringSlice">RandStringSlice</span>
+
+<p>Generate a slice of random string of length strLen based on charset. chartset should be one of the following: random.Numeral, random.LowwerLetters, random.UpperLetters random.Letters, random.SymbolChars, random.AllChars. or a combination of them.</p>
+
+<b>Signature:</b>
+
+```go
+func RandStringSlice(charset string, sliceLen, strLen int) []string
+```
+
+<b>Example:</b>
+
+```go
+package main
+
+import (
+    "fmt"
+    "github.com/duke-git/lancet/random"
+)
+
+func main() {
+    strs := random.RandStringSlice(random.Letters, 4, 6)
+    fmt.Println(strs)
+
+    // output random string slice like below:
+    //[CooSMq RUFjDz FAeMPf heRyGv]
+}
+```
+
+### <span id="RandBool">RandBool</span>
+
+<p>Generate a random boolean value (true or false).</p>
+
+<b>Signature:</b>
+
+```go
+func RandBool() bool
+```
+
+<b>Example:</b>
+
+```go
+package main
+
+import (
+    "fmt"
+    "github.com/duke-git/lancet/random"
+)
+
+func main() {
+    result := random.RandBool()
+    fmt.Println(result) // true or false (random)
+}
+```
+
+### <span id="RandBoolSlice">RandBoolSlice</span>
+
+<p>Generates a random boolean slice of specified length.</p>
+
+<b>Signature:</b>
+
+```go
+func RandBoolSlice(length int) []bool
+```
+
+<b>Example:</b>
+
+```go
+package main
+
+import (
+    "fmt"
+    "github.com/duke-git/lancet/random"
+)
+
+func main() {
+    result := random.RandBoolSlice(2)
+    fmt.Println(result) // [true false] (random)
+}
+```

docs/random_zh-CN.md

@@ -30,6 +30,13 @@ import (
 -   [RandNumeral](#RandNumeral)
 -   [RandNumeralOrLetter](#RandNumeralOrLetter)
 -   [UUIdV4](#UUIdV4)
+-   [RandFloat](#RandFloat)
+-   [RandFloats](#RandFloats)
+-   [RandUniqueIntSlice](#RandUniqueIntSlice)
+-   [RandIntSlice](#RandIntSlice)
+-   [RandStringSlice](#RandStringSlice)
+-   [RandBool](#RandBool)
+-   [RandBoolSlice](#RandBoolSlice)
 
 <div STYLE="page-break-after: always;"></div>
 
@@ -56,8 +63,8 @@ import (
 )
 
 func main() {
-	randBytes := random.RandBytes(4)
-	fmt.Println(randBytes)
+    randBytes := random.RandBytes(4)
+    fmt.Println(randBytes)
 }
 ```
 
@@ -82,8 +89,8 @@ import (
 )
 
 func main() {
-	rInt := random.RandInt(1, 10)
-	fmt.Println(rInt)
+    rInt := random.RandInt(1, 10)
+    fmt.Println(rInt)
 }
 ```
 
@@ -108,8 +115,8 @@ import (
 )
 
 func main() {
-	randStr := random.RandString(6)
-	fmt.Println(randStr) //pGWsze
+    randStr := random.RandString(6)
+    fmt.Println(randStr) //pGWsze
 }
 ```
 
@@ -134,8 +141,8 @@ import (
 )
 
 func main() {
-	randStr := random.RandString(6)
-	fmt.Println(randStr) //PACWGF
+    randStr := random.RandString(6)
+    fmt.Println(randStr) //PACWGF
 }
 ```
 
@@ -160,8 +167,8 @@ import (
 )
 
 func main() {
-	randStr := random.RandLower(6)
-	fmt.Println(randStr) //siqbew
+    randStr := random.RandLower(6)
+    fmt.Println(randStr) //siqbew
 }
 ```
 
@@ -186,8 +193,8 @@ import (
 )
 
 func main() {
-	randStr := random.RandNumeral(6)
-	fmt.Println(randStr) //035172
+    randStr := random.RandNumeral(6)
+    fmt.Println(randStr) //035172
 }
 ```
 
@@ -212,8 +219,8 @@ import (
 )
 
 func main() {
-	randStr := random.RandNumeralOrLetter(6)
-	fmt.Println(randStr) //0aW7cQ
+    randStr := random.RandNumeralOrLetter(6)
+    fmt.Println(randStr) //0aW7cQ
 }
 ```
 
@@ -238,10 +245,195 @@ import (
 )
 
 func main() {
-	uuid, err := random.UUIdV4()
+    uuid, err := random.UUIdV4()
     if err != nil {
         return
     }
-	fmt.Println(uuid)
+    fmt.Println(uuid)
 }
 ```
+
+### <span id="RandFloat">RandFloat</span>
+
+<p>Generate a random float64 number between [min, max) with specific precision.</p>
+
+<b>Signature:</b>
+
+```go
+func RandFloat(min, max float64, precision int) float64
+```
+
+<b>Example:<span style="float:right;display:inline-block;">[Run](https://go.dev/play/p/zbD_tuobJtr)</span></b>
+
+```go
+package main
+
+import (
+    "fmt"
+    "github.com/duke-git/lancet/random"
+)
+
+func main() {
+    floatNumber := random.RandFloat(1.0, 5.0, 2)
+    fmt.Println(floatNumber) //2.14 (random number)
+}
+```
+
+### <span id="RandFloats">RandFloats</span>
+
+<p>Generate a slice of random float64 numbers of length n that do not repeat. Number range in [min, max)</p>
+
+<b>Signature:</b>
+
+```go
+func RandFloats(length int, min, max float64, precision int) []float64
+```
+
+<b>Example:<span style="float:right;display:inline-block;">[Run](https://go.dev/play/p/I3yndUQ-rhh)</span></b>
+
+```go
+package main
+
+import (
+    "fmt"
+    "github.com/duke-git/lancet/random"
+)
+
+func main() {
+    floatNumbers := random.RandFloats(5, 1.0, 5.0, 2)
+    fmt.Println(floatNumbers) //[3.42 3.99 1.3 2.38 4.23] (random)
+}
+```
+
+### <span id="RandUniqueIntSlice">RandUniqueIntSlice</span>
+
+<p>生成一个不重复的长度为n的随机int切片。</p>
+
+<b>函数签名:</b>
+
+```go
+func RandUniqueIntSlice(n, min, max int) []int
+```
+
+<b>示例:</b>
+
+```go
+package main
+
+import (
+    "fmt"
+    "github.com/duke-git/lancet/random"
+)
+
+func main() {
+    result := RandUniqueIntSlice(5, 0, 10)
+    fmt.Println(result) //[0 4 7 1 5] (random)
+}
+```
+
+### <span id="RandIntSlice">RandIntSlice</span>
+
+<p>生成一个特定长度的随机int切片，数值范围[min, max)。</p>
+
+<b>函数签名:</b>
+
+```go
+func RandIntSlice(length, min, max int) []int
+```
+
+<b>示例:</b>
+
+```go
+package main
+
+import (
+    "fmt"
+    "github.com/duke-git/lancet/random"
+)
+
+func main() {
+    result := random.RandIntSlice(5, 0, 10)
+    fmt.Println(result) //[1 2 7 1 5] (random)
+}
+```
+
+### <span id="RandStringSlice">RandStringSlice</span>
+
+<p>生成随机字符串slice. 字符串类型需要是以下几种或者它们的组合: random.Numeral, random.LowwerLetters, random.UpperLetters random.Letters, random.SymbolChars, random.AllChars。</p>
+
+<b>函数签名:</b>
+
+```go
+func RandStringSlice(charset string, sliceLen, strLen int) []string
+```
+
+<b>实例:</b>
+
+```go
+package main
+
+import (
+    "fmt"
+    "github.com/duke-git/lancet/random"
+)
+
+func main() {
+    strs := random.RandStringSlice(random.Letters, 4, 6)
+    fmt.Println(strs)
+
+    // output random string slice like below:
+    //[CooSMq RUFjDz FAeMPf heRyGv]
+}
+```
+
+### <span id="RandBool">RandBool</span>
+
+<p>生成随机bool值(true or false)。</p>
+
+<b>函数签名:</b>
+
+```go
+func RandBool() bool
+```
+
+<b>实例:</b>
+
+```go
+package main
+
+import (
+    "fmt"
+    "github.com/duke-git/lancet/random"
+)
+
+func main() {
+    result := random.RandBool()
+    fmt.Println(result) // true or false (random)
+}
+```
+
+### <span id="RandBoolSlice">RandBoolSlice</span>
+
+<p>生成特定长度的随机bool slice。</p>
+
+<b>函数签名:</b>
+
+```go
+func RandBoolSlice(length int) []bool
+```
+
+<b>实例:</b>
+
+```go
+package main
+
+import (
+    "fmt"
+    "github.com/duke-git/lancet/random"
+)
+
+func main() {
+    result := random.RandBoolSlice(2)
+    fmt.Println(result) // [true false] (random)
+}
+```

docs/retry.md

@@ -1,4 +1,5 @@
 # Retry
+
 Package retry is for executing a function repeatedly until it was successful or canceled by the context.
 
 <div STYLE="page-break-after: always;"></div>
@@ -7,10 +8,10 @@ Package retry is for executing a function repeatedly until it was successful or
 
 [https://github.com/duke-git/lancet/blob/v1/retry/retry.go](https://github.com/duke-git/lancet/blob/v1/retry/retry.go)
 
-
 <div STYLE="page-break-after: always;"></div>
 
 ## Usage:
+
 ```go
 import (
     "github.com/duke-git/lancet/retry"
@@ -20,18 +21,19 @@ import (
 <div STYLE="page-break-after: always;"></div>
 
 ## Index
-- [Context](#Context)
-- [Retry](#Retry)
-- [RetryFunc](#RetryFunc)
-- [RetryDuration](#RetryDuration)
-- [RetryTimes](#RetryTimes)
+
+-   [Context](#Context)
+-   [Retry](#Retry)
+-   [RetryFunc](#RetryFunc)
+-   [RetryDuration](#RetryDuration)
+-   [RetryTimes](#RetryTimes)
 
 <div STYLE="page-break-after: always;"></div>
 
 ## Documentation
 
-
 ### <span id="Context">Context</span>
+
 <p>Set retry context config, can cancel the retry with context.</p>
 
 <b>Signature:</b>
@@ -39,43 +41,42 @@ import (
 ```go
 func Context(ctx context.Context)
 ```
+
 <b>Example:</b>
 
 ```go
 import (
-	"context"
-	"errors"
-	"fmt"
-	"github.com/duke-git/lancet/retry"
-	"time"
+    "context"
+    "errors"
+    "fmt"
+    "github.com/duke-git/lancet/retry"
+    "time"
 )
 
 func main() {
-	ctx, cancel := context.WithCancel(context.TODO())
-	var number int
-	increaseNumber := func() error {
-		number++
-		if number > 3 {
-			cancel()
-		}
-		return errors.New("error occurs")
-	}
+    ctx, cancel := context.WithCancel(context.TODO())
+    var number int
+    increaseNumber := func() error {
+        number++
+        if number > 3 {
+            cancel()
+        }
+        return errors.New("error occurs")
+    }
 
-	err := retry.Retry(increaseNumber,
-		retry.RetryDuration(time.Microsecond*50),
-		retry.Context(ctx),
-	)
+    err := retry.Retry(increaseNumber,
+        retry.RetryDuration(time.Microsecond*50),
+        retry.Context(ctx),
+    )
 
-	if err != nil {
-		fmt.Println(err) //retry is cancelled
-	}
+    if err != nil {
+        fmt.Println(err) //retry is cancelled
+    }
 }
 ```
 
-
-
-
 ### <span id="RetryFunc">RetryFunc</span>
+
 <p>Function that retry executes.</p>
 
 <b>Signature:</b>
@@ -83,6 +84,7 @@ func main() {
 ```go
 type RetryFunc func() error
 ```
+
 <b>Example:</b>
 
 ```go
@@ -98,26 +100,25 @@ import (
 func main() {
     var number int
     var increaseNumber retry.RetryFunc
-	increaseNumber = func() error {
-		number++
-		if number == 3 {
-			return nil
-		}
-		return errors.New("error occurs")
-	}
+    increaseNumber = func() error {
+        number++
+        if number == 3 {
+            return nil
+        }
+        return errors.New("error occurs")
+    }
 
-	err := retry.Retry(increaseNumber, retry.RetryDuration(time.Microsecond*50))
+    err := retry.Retry(increaseNumber, retry.RetryDuration(time.Microsecond*50))
     if err != nil {
-		log.Fatal(err)
-	}
+        log.Fatal(err)
+    }
 
     fmt.Println(number) //3
 }
 ```
 
-
-
 ### <span id="RetryTimes">RetryTimes</span>
+
 <p>Set times of retry. Default times is 5.</p>
 
 <b>Signature:</b>
@@ -125,6 +126,7 @@ func main() {
 ```go
 func RetryTimes(n uint)
 ```
+
 <b>Example:</b>
 
 ```go
@@ -139,24 +141,23 @@ import (
 
 func main() {
     var number int
-	increaseNumber := func() error {
-		number++
-		if number == 3 {
-			return nil
-		}
-		return errors.New("error occurs")
-	}
+    increaseNumber := func() error {
+        number++
+        if number == 3 {
+            return nil
+        }
+        return errors.New("error occurs")
+    }
 
-	err := retry.Retry(increaseNumber, retry.RetryTimes(2))
+    err := retry.Retry(increaseNumber, retry.RetryTimes(2))
     if err != nil {
-		log.Fatal(err) //2022/02/01 18:42:25 function main.main.func1 run failed after 2 times retry exit status 1
-	}
+        log.Fatal(err) //2022/02/01 18:42:25 function main.main.func1 run failed after 2 times retry exit status 1
+    }
 }
 ```
 
-
-
 ### <span id="RetryDuration">RetryDuration</span>
+
 <p>Set duration of retries. Default duration is 3 second.</p>
 
 <b>Signature:</b>
@@ -164,6 +165,7 @@ func main() {
 ```go
 func RetryDuration(d time.Duration)
 ```
+
 <b>Example:</b>
 
 ```go
@@ -178,25 +180,25 @@ import (
 
 func main() {
     var number int
-	increaseNumber := func() error {
-		number++
-		if number == 3 {
-			return nil
-		}
-		return errors.New("error occurs")
-	}
+    increaseNumber := func() error {
+        number++
+        if number == 3 {
+            return nil
+        }
+        return errors.New("error occurs")
+    }
 
-	err := retry.Retry(increaseNumber, retry.RetryDuration(time.Microsecond*50))
+    err := retry.Retry(increaseNumber, retry.RetryDuration(time.Microsecond*50))
     if err != nil {
-		log.Fatal(err)
-	}
+        log.Fatal(err)
+    }
 
     fmt.Println(number) //3
 }
 ```
 
-
 ### <span id="Retry">Retry</span>
+
 <p>Executes the retryFunc repeatedly until it was successful or canceled by the context.</p>
 
 <b>Signature:</b>
@@ -204,6 +206,7 @@ func main() {
 ```go
 func Retry(retryFunc RetryFunc, opts ...Option) error
 ```
+
 <b>Example:</b>
 
 ```go
@@ -218,18 +221,18 @@ import (
 
 func main() {
     var number int
-	increaseNumber := func() error {
-		number++
-		if number == 3 {
-			return nil
-		}
-		return errors.New("error occurs")
-	}
+    increaseNumber := func() error {
+        number++
+        if number == 3 {
+            return nil
+        }
+        return errors.New("error occurs")
+    }
 
-	err := retry.Retry(increaseNumber, retry.RetryDuration(time.Microsecond*50))
+    err := retry.Retry(increaseNumber, retry.RetryDuration(time.Microsecond*50))
     if err != nil {
-		log.Fatal(err)
-	}
+        log.Fatal(err)
+    }
 
     fmt.Println(number) //3
 }

docs/retry_zh-CN.md

@@ -1,5 +1,6 @@
 # Retry
-retry重试执行函数直到函数运行成功或被context cancel。
+
+retry 重试执行函数直到函数运行成功或被 context cancel。
 
 <div STYLE="page-break-after: always;"></div>
 
@@ -7,10 +8,10 @@ retry重试执行函数直到函数运行成功或被context cancel。
 
 [https://github.com/duke-git/lancet/blob/v1/retry/retry.go](https://github.com/duke-git/lancet/blob/v1/retry/retry.go)
 
-
 <div STYLE="page-break-after: always;"></div>
 
 ## 用法:
+
 ```go
 import (
     "github.com/duke-git/lancet/retry"
@@ -20,20 +21,19 @@ import (
 <div STYLE="page-break-after: always;"></div>
 
 ## 目录
-- [Context](#Context)
-- [Retry](#Retry)
-- [RetryFunc](#RetryFunc)
-- [RetryDuration](#RetryDuration)
-- [RetryTimes](#RetryTimes)
 
+-   [Context](#Context)
+-   [Retry](#Retry)
+-   [RetryFunc](#RetryFunc)
+-   [RetryDuration](#RetryDuration)
+-   [RetryTimes](#RetryTimes)
 
 <div STYLE="page-break-after: always;"></div>
 
-
-## Document文档
-
+## Document 文档
 
 ### <span id="Context">Context</span>
+
 <p>设置重试context参数</p>
 
 <b>函数签名:</b>
@@ -41,43 +41,42 @@ import (
 ```go
 func Context(ctx context.Context)
 ```
+
 <b>例子:</b>
 
 ```go
 import (
-	"context"
-	"errors"
-	"fmt"
-	"lancet-demo/retry"
-	"time"
+    "context"
+    "errors"
+    "fmt"
+    "lancet-demo/retry"
+    "time"
 )
 
 func main() {
-	ctx, cancel := context.WithCancel(context.TODO())
-	var number int
-	increaseNumber := func() error {
-		number++
-		if number > 3 {
-			cancel()
-		}
-		return errors.New("error occurs")
-	}
+    ctx, cancel := context.WithCancel(context.TODO())
+    var number int
+    increaseNumber := func() error {
+        number++
+        if number > 3 {
+            cancel()
+        }
+        return errors.New("error occurs")
+    }
 
-	err := retry.Retry(increaseNumber,
-		retry.RetryDuration(time.Microsecond*50),
-		retry.Context(ctx),
-	)
+    err := retry.Retry(increaseNumber,
+        retry.RetryDuration(time.Microsecond*50),
+        retry.Context(ctx),
+    )
 
-	if err != nil {
-		fmt.Println(err) //retry is cancelled
-	}
+    if err != nil {
+        fmt.Println(err) //retry is cancelled
+    }
 }
 ```
 
-
-
-
 ### <span id="RetryFunc">RetryFunc</span>
+
 <p>被重试执行的函数</p>
 
 <b>函数签名:</b>
@@ -85,6 +84,7 @@ func main() {
 ```go
 type RetryFunc func() error
 ```
+
 <b>例子:</b>
 
 ```go
@@ -100,26 +100,25 @@ import (
 func main() {
     var number int
     var increaseNumber retry.RetryFunc
-	increaseNumber = func() error {
-		number++
-		if number == 3 {
-			return nil
-		}
-		return errors.New("error occurs")
-	}
+    increaseNumber = func() error {
+        number++
+        if number == 3 {
+            return nil
+        }
+        return errors.New("error occurs")
+    }
 
-	err := retry.Retry(increaseNumber, retry.RetryDuration(time.Microsecond*50))
+    err := retry.Retry(increaseNumber, retry.RetryDuration(time.Microsecond*50))
     if err != nil {
-		log.Fatal(err)
-	}
+        log.Fatal(err)
+    }
 
     fmt.Println(number) //3
 }
 ```
 
-
-
 ### <span id="RetryTimes">RetryTimes</span>
+
 <p>设置重试次数，默认5</p>
 
 <b>函数签名:</b>
@@ -127,6 +126,7 @@ func main() {
 ```go
 func RetryTimes(n uint)
 ```
+
 <b>例子:</b>
 
 ```go
@@ -141,24 +141,23 @@ import (
 
 func main() {
     var number int
-	increaseNumber := func() error {
-		number++
-		if number == 3 {
-			return nil
-		}
-		return errors.New("error occurs")
-	}
+    increaseNumber := func() error {
+        number++
+        if number == 3 {
+            return nil
+        }
+        return errors.New("error occurs")
+    }
 
-	err := retry.Retry(increaseNumber, retry.RetryTimes(2))
+    err := retry.Retry(increaseNumber, retry.RetryTimes(2))
     if err != nil {
-		log.Fatal(err) //2022/02/01 18:42:25 function main.main.func1 run failed after 2 times retry exit status 1
-	}
+        log.Fatal(err) //2022/02/01 18:42:25 function main.main.func1 run failed after 2 times retry exit status 1
+    }
 }
 ```
 
-
-
 ### <span id="RetryDuration">RetryDuration</span>
+
 <p>设置重试间隔时间，默认3秒</p>
 
 <b>函数签名:</b>
@@ -166,6 +165,7 @@ func main() {
 ```go
 func RetryDuration(d time.Duration)
 ```
+
 <b>例子:</b>
 
 ```go
@@ -180,25 +180,25 @@ import (
 
 func main() {
     var number int
-	increaseNumber := func() error {
-		number++
-		if number == 3 {
-			return nil
-		}
-		return errors.New("error occurs")
-	}
+    increaseNumber := func() error {
+        number++
+        if number == 3 {
+            return nil
+        }
+        return errors.New("error occurs")
+    }
 
-	err := retry.Retry(increaseNumber, retry.RetryDuration(time.Microsecond*50))
+    err := retry.Retry(increaseNumber, retry.RetryDuration(time.Microsecond*50))
     if err != nil {
-		log.Fatal(err)
-	}
+        log.Fatal(err)
+    }
 
     fmt.Println(number) //3
 }
 ```
 
-
 ### <span id="Retry">Retry</span>
+
 <p>重试执行函数retryFunc，直到函数运行成功，或被context停止</p>
 
 <b>函数签名:</b>
@@ -206,6 +206,7 @@ func main() {
 ```go
 func Retry(retryFunc RetryFunc, opts ...Option) error
 ```
+
 <b>例子:</b>
 
 ```go
@@ -220,18 +221,18 @@ import (
 
 func main() {
     var number int
-	increaseNumber := func() error {
-		number++
-		if number == 3 {
-			return nil
-		}
-		return errors.New("error occurs")
-	}
+    increaseNumber := func() error {
+        number++
+        if number == 3 {
+            return nil
+        }
+        return errors.New("error occurs")
+    }
 
-	err := retry.Retry(increaseNumber, retry.RetryDuration(time.Microsecond*50))
+    err := retry.Retry(increaseNumber, retry.RetryDuration(time.Microsecond*50))
     if err != nil {
-		log.Fatal(err)
-	}
+        log.Fatal(err)
+    }
 
     fmt.Println(number) //3
 }

docs/system.md

@@ -1,4 +1,5 @@
 # System
+
 Package system contains some functions about os, runtime, shell command.
 
 <div STYLE="page-break-after: always;"></div>
@@ -7,10 +8,10 @@ Package system contains some functions about os, runtime, shell command.
 
 [https://github.com/duke-git/lancet/blob/v1/system/os.go](https://github.com/duke-git/lancet/blob/v1/system/os.go)
 
-
 <div STYLE="page-break-after: always;"></div>
 
 ## Usage:
+
 ```go
 import (
     "github.com/duke-git/lancet/system"
@@ -20,23 +21,23 @@ import (
 <div STYLE="page-break-after: always;"></div>
 
 ## Index
-- [IsWindows](#IsWindows)
-- [IsLinux](#IsLinux)
-- [IsMac](#IsMac)
-- [GetOsEnv](#GetOsEnv)
-- [SetOsEnv](#SetOsEnv)
-- [RemoveOsEnv](#RemoveOsEnv)
-- [CompareOsEnv](#CompareOsEnv)
-- [ExecCommand](#ExecCommand)
-- [GetOsBits](#GetOsBits)
-  
+
+-   [IsWindows](#IsWindows)
+-   [IsLinux](#IsLinux)
+-   [IsMac](#IsMac)
+-   [GetOsEnv](#GetOsEnv)
+-   [SetOsEnv](#SetOsEnv)
+-   [RemoveOsEnv](#RemoveOsEnv)
+-   [CompareOsEnv](#CompareOsEnv)
+-   [ExecCommand](#ExecCommand)
+-   [GetOsBits](#GetOsBits)
 
 <div STYLE="page-break-after: always;"></div>
 
 ## Documentation
 
-
 ### <span id="IsWindows">IsWindows</span>
+
 <p>Check if current os is windows.</p>
 
 <b>Signature:</b>
@@ -44,24 +45,23 @@ import (
 ```go
 func IsWindows() bool
 ```
+
 <b>Example:</b>
 
 ```go
 import (
-	"fmt"
-	"github.com/duke-git/lancet/system"
+    "fmt"
+    "github.com/duke-git/lancet/system"
 )
 
 func main() {
-	isOsWindows := system.IsWindows()
-	fmt.Println(isOsWindows)
+    isOsWindows := system.IsWindows()
+    fmt.Println(isOsWindows)
 }
 ```
 
-
-
-
 ### <span id="IsLinux">IsLinux</span>
+
 <p>Check if current os is linux.</p>
 
 <b>Signature:</b>
@@ -69,23 +69,23 @@ func main() {
 ```go
 func IsLinux() bool
 ```
+
 <b>Example:</b>
 
 ```go
 import (
-	"fmt"
-	"github.com/duke-git/lancet/system"
+    "fmt"
+    "github.com/duke-git/lancet/system"
 )
 
 func main() {
-	isOsLinux := system.IsLinux()
-	fmt.Println(isOsLinux)
+    isOsLinux := system.IsLinux()
+    fmt.Println(isOsLinux)
 }
 ```
 
-
-
 ### <span id="IsMac">IsMac</span>
+
 <p>Check if current os is macos.</p>
 
 <b>Signature:</b>
@@ -93,23 +93,23 @@ func main() {
 ```go
 func IsMac() bool
 ```
+
 <b>Example:</b>
 
 ```go
 import (
-	"fmt"
-	"github.com/duke-git/lancet/system"
+    "fmt"
+    "github.com/duke-git/lancet/system"
 )
 
 func main() {
-	isOsMac := system.IsMac
-	fmt.Println(isOsMac)
+    isOsMac := system.IsMac
+    fmt.Println(isOsMac)
 }
 ```
 
-
-
 ### <span id="GetOsEnv">GetOsEnv</span>
+
 <p>Gets the value of the environment variable named by the key.</p>
 
 <b>Signature:</b>
@@ -117,23 +117,23 @@ func main() {
 ```go
 func GetOsEnv(key string) string
 ```
+
 <b>Example:</b>
 
 ```go
 import (
-	"fmt"
-	"github.com/duke-git/lancet/system"
+    "fmt"
+    "github.com/duke-git/lancet/system"
 )
 
 func main() {
-	fooEnv := system.GetOsEnv("foo")
-	fmt.Println(fooEnv)
+    fooEnv := system.GetOsEnv("foo")
+    fmt.Println(fooEnv)
 }
 ```
 
-
-
 ### <span id="SetOsEnv">SetOsEnv</span>
+
 <p>Sets the value of the environment variable named by the key.</p>
 
 <b>Signature:</b>
@@ -141,24 +141,23 @@ func main() {
 ```go
 func SetOsEnv(key, value string) error
 ```
+
 <b>Example:</b>
 
 ```go
 import (
-	"fmt"
-	"github.com/duke-git/lancet/system"
+    "fmt"
+    "github.com/duke-git/lancet/system"
 )
 
 func main() {
-	err := system.SetOsEnv("foo", "foo_value")
-	fmt.Println(err)
+    err := system.SetOsEnv("foo", "foo_value")
+    fmt.Println(err)
 }
 ```
 
-
-
-
 ### <span id="RemoveOsEnv">RemoveOsEnv</span>
+
 <p>Remove a single environment variable.</p>
 
 <b>Signature:</b>
@@ -166,25 +165,25 @@ func main() {
 ```go
 func RemoveOsEnv(key string) error
 ```
+
 <b>Example:</b>
 
 ```go
 import (
-	"fmt"
-	"github.com/duke-git/lancet/system"
+    "fmt"
+    "github.com/duke-git/lancet/system"
 )
 
 func main() {
-	err := system.RemoveOsEnv("foo")
-	if err != nil {
-		fmt.Println(err)
-	}
+    err := system.RemoveOsEnv("foo")
+    if err != nil {
+        fmt.Println(err)
+    }
 }
 ```
 
-
-
 ### <span id="CompareOsEnv">CompareOsEnv</span>
+
 <p>Get env named by the key and compare it with comparedEnv.</p>
 
 <b>Signature:</b>
@@ -192,51 +191,53 @@ func main() {
 ```go
 func CompareOsEnv(key, comparedEnv string) bool
 ```
+
 <b>Example:</b>
 
 ```go
 import (
-	"fmt"
-	"github.com/duke-git/lancet/system"
+    "fmt"
+    "github.com/duke-git/lancet/system"
 )
 
 func main() {
-	system.SetOsEnv("foo", "foo_value")
-	res := system.CompareOsEnv("foo", "foo_value")
-	fmt.Println(res) //true
+    system.SetOsEnv("foo", "foo_value")
+    res := system.CompareOsEnv("foo", "foo_value")
+    fmt.Println(res) //true
 }
 ```
 
+### <span id="ExecCommand">ExecCommand</span>
 
-
-
-### <span id="ExecCommand">CompareOsEnv</span>
 <p>use shell /bin/bash -c(linux) or cmd (windows) to execute command.</p>
 
 <b>Signature:</b>
 
 ```go
-func ExecCommand(command string) (stdout, stderr string, err error)
+type (
+	Option func(*exec.Cmd)
+)
+func ExecCommand(command string, opts ...Option) (stdout, stderr string, err error)
 ```
+
 <b>Example:</b>
 
 ```go
 import (
-	"fmt"
-	"github.com/duke-git/lancet/system"
+    "fmt"
+    "github.com/duke-git/lancet/system"
 )
 
 func main() {
-	out, errout, err := system.ExecCommand("ls")
-	fmt.Println(out)
-	fmt.Println(errout)
-	fmt.Println(err)
+    out, errout, err := system.ExecCommand("ls", system.WithForeground())
+    fmt.Println(out)
+    fmt.Println(errout)
+    fmt.Println(err)
 }
 ```
 
-
-
 ### <span id="GetOsBits">GetOsBits</span>
+
 <p>获取当前操作系统位数，返回32或64</p>
 
 <b>函数签名:</b>
@@ -244,20 +245,17 @@ func main() {
 ```go
 func GetOsBits() int
 ```
+
 <b>例子:</b>
 
 ```go
 import (
-	"fmt"
-	"github.com/duke-git/lancet/system"
+    "fmt"
+    "github.com/duke-git/lancet/system"
 )
 
 func main() {
-	osBit := system.GetOsBits()
-	fmt.Println(osBit) 
+    osBit := system.GetOsBits()
+    fmt.Println(osBit)
 }
 ```
-
-
-
-

docs/system_zh-CN.md

@@ -1,5 +1,6 @@
 # System
-system包含os, runtime, shell command相关函数。
+
+system 包含 os, runtime, shell command 相关函数。
 
 <div STYLE="page-break-after: always;"></div>
 
@@ -7,10 +8,10 @@ system包含os, runtime, shell command相关函数。
 
 [https://github.com/duke-git/lancet/blob/v1/system/os.go](https://github.com/duke-git/lancet/blob/v1/system/os.go)
 
-
 <div STYLE="page-break-after: always;"></div>
 
 ## 用法:
+
 ```go
 import (
     "github.com/duke-git/lancet/system"
@@ -20,23 +21,23 @@ import (
 <div STYLE="page-break-after: always;"></div>
 
 ## 目录
-- [IsWindows](#IsWindows)
-- [IsLinux](#IsLinux)
-- [IsMac](#IsMac)
-- [GetOsEnv](#GetOsEnv)
-- [SetOsEnv](#SetOsEnv)
-- [RemoveOsEnv](#RemoveOsEnv)
-- [CompareOsEnv](#CompareOsEnv)
-- [ExecCommand](#ExecCommand)
-- [GetOsBits](#GetOsBits)
-  
+
+-   [IsWindows](#IsWindows)
+-   [IsLinux](#IsLinux)
+-   [IsMac](#IsMac)
+-   [GetOsEnv](#GetOsEnv)
+-   [SetOsEnv](#SetOsEnv)
+-   [RemoveOsEnv](#RemoveOsEnv)
+-   [CompareOsEnv](#CompareOsEnv)
+-   [ExecCommand](#ExecCommand)
+-   [GetOsBits](#GetOsBits)
 
 <div STYLE="page-break-after: always;"></div>
 
-## Documentation文档
-
+## Documentation 文档
 
 ### <span id="IsWindows">IsWindows</span>
+
 <p>检查当前操作系统是否是windows</p>
 
 <b>Signature:</b>
@@ -44,24 +45,23 @@ import (
 ```go
 func IsWindows() bool
 ```
+
 <b>Example:</b>
 
 ```go
 import (
-	"fmt"
-	"github.com/duke-git/lancet/system"
+    "fmt"
+    "github.com/duke-git/lancet/system"
 )
 
 func main() {
-	isOsWindows := system.IsWindows()
-	fmt.Println(isOsWindows)
+    isOsWindows := system.IsWindows()
+    fmt.Println(isOsWindows)
 }
 ```
 
-
-
-
 ### <span id="IsLinux">IsLinux</span>
+
 <p>检查当前操作系统是否是linux</p>
 
 <b>Signature:</b>
@@ -69,23 +69,23 @@ func main() {
 ```go
 func IsLinux() bool
 ```
+
 <b>Example:</b>
 
 ```go
 import (
-	"fmt"
-	"github.com/duke-git/lancet/system"
+    "fmt"
+    "github.com/duke-git/lancet/system"
 )
 
 func main() {
-	isOsLinux := system.IsLinux()
-	fmt.Println(isOsLinux)
+    isOsLinux := system.IsLinux()
+    fmt.Println(isOsLinux)
 }
 ```
 
-
-
 ### <span id="IsMac">IsMac</span>
+
 <p>检查当前操作系统是否是macos</p>
 
 <b>Signature:</b>
@@ -93,23 +93,23 @@ func main() {
 ```go
 func IsMac() bool
 ```
+
 <b>Example:</b>
 
 ```go
 import (
-	"fmt"
-	"github.com/duke-git/lancet/system"
+    "fmt"
+    "github.com/duke-git/lancet/system"
 )
 
 func main() {
-	isOsMac := system.IsMac
-	fmt.Println(isOsMac)
+    isOsMac := system.IsMac
+    fmt.Println(isOsMac)
 }
 ```
 
-
-
 ### <span id="GetOsEnv">GetOsEnv</span>
+
 <p>获取key命名的环境变量的值</p>
 
 <b>Signature:</b>
@@ -117,23 +117,23 @@ func main() {
 ```go
 func GetOsEnv(key string) string
 ```
+
 <b>Example:</b>
 
 ```go
 import (
-	"fmt"
-	"github.com/duke-git/lancet/system"
+    "fmt"
+    "github.com/duke-git/lancet/system"
 )
 
 func main() {
-	fooEnv := system.GetOsEnv("foo")
-	fmt.Println(fooEnv)
+    fooEnv := system.GetOsEnv("foo")
+    fmt.Println(fooEnv)
 }
 ```
 
-
-
 ### <span id="SetOsEnv">SetOsEnv</span>
+
 <p>设置由key命名的环境变量的值</p>
 
 <b>Signature:</b>
@@ -141,24 +141,23 @@ func main() {
 ```go
 func SetOsEnv(key, value string) error
 ```
+
 <b>Example:</b>
 
 ```go
 import (
-	"fmt"
-	"github.com/duke-git/lancet/system"
+    "fmt"
+    "github.com/duke-git/lancet/system"
 )
 
 func main() {
-	err := system.SetOsEnv("foo", "foo_value")
-	fmt.Println(err)
+    err := system.SetOsEnv("foo", "foo_value")
+    fmt.Println(err)
 }
 ```
 
-
-
-
 ### <span id="RemoveOsEnv">RemoveOsEnv</span>
+
 <p>删除单个环境变量</p>
 
 <b>Signature:</b>
@@ -166,25 +165,25 @@ func main() {
 ```go
 func RemoveOsEnv(key string) error
 ```
+
 <b>Example:</b>
 
 ```go
 import (
-	"fmt"
-	"github.com/duke-git/lancet/system"
+    "fmt"
+    "github.com/duke-git/lancet/system"
 )
 
 func main() {
-	err := system.RemoveOsEnv("foo")
-	if err != nil {
-		fmt.Println(err)
-	}
+    err := system.RemoveOsEnv("foo")
+    if err != nil {
+        fmt.Println(err)
+    }
 }
 ```
 
-
-
 ### <span id="CompareOsEnv">CompareOsEnv</span>
+
 <p>获取key命名的环境变量值并与compareEnv进行比较</p>
 
 <b>Signature:</b>
@@ -192,51 +191,53 @@ func main() {
 ```go
 func CompareOsEnv(key, comparedEnv string) bool
 ```
+
 <b>Example:</b>
 
 ```go
 import (
-	"fmt"
-	"github.com/duke-git/lancet/system"
+    "fmt"
+    "github.com/duke-git/lancet/system"
 )
 
 func main() {
-	system.SetOsEnv("foo", "foo_value")
-	res := system.CompareOsEnv("foo", "foo_value")
-	fmt.Println(res) //true
+    system.SetOsEnv("foo", "foo_value")
+    res := system.CompareOsEnv("foo", "foo_value")
+    fmt.Println(res) //true
 }
 ```
 
+### <span id="ExecCommand">ExecCommand</span>
 
-
-
-### <span id="ExecCommand">CompareOsEnv</span>
 <p>使用shell /bin/bash -c(linux) 或 cmd (windows) 执行shell命令</p>
 
 <b>Signature:</b>
 
 ```go
-func ExecCommand(command string) (stdout, stderr string, err error)
+type (
+	Option func(*exec.Cmd)
+)
+func ExecCommand(command string, opts ...Option) (stdout, stderr string, err error)
 ```
+
 <b>Example:</b>
 
 ```go
 import (
-	"fmt"
-	"github.com/duke-git/lancet/system"
+    "fmt"
+    "github.com/duke-git/lancet/system"
 )
 
 func main() {
-	out, errout, err := system.ExecCommand("ls")
-	fmt.Println(out)
-	fmt.Println(errout)
-	fmt.Println(err)
+    out, errout, err := system.ExecCommand("ls", system.WithForeground())
+    fmt.Println(out)
+    fmt.Println(errout)
+    fmt.Println(err)
 }
 ```
 
-
-
 ### <span id="GetOsBits">GetOsBits</span>
+
 <p>Get current os bits, 32bit or 64bit. return 32 or 64</p>
 
 <b>Signature:</b>
@@ -244,20 +245,17 @@ func main() {
 ```go
 func GetOsBits() int
 ```
+
 <b>Example:</b>
 
 ```go
 import (
-	"fmt"
-	"github.com/duke-git/lancet/system"
+    "fmt"
+    "github.com/duke-git/lancet/system"
 )
 
 func main() {
-	osBit := system.GetOsBits()
-	fmt.Println(osBit) 
+    osBit := system.GetOsBits()
+    fmt.Println(osBit)
 }
 ```
-
-
-
-

fileutil/file.go

@@ -7,16 +7,26 @@ package fileutil
 import (
 	"archive/zip"
 	"bufio"
+	"bytes"
+	"crypto/sha1"
+	"crypto/sha256"
+	"crypto/sha512"
+	"encoding/csv"
 	"errors"
 	"fmt"
 	"io"
 	"io/fs"
 	"io/ioutil"
+	"log"
 	"net/http"
 	"os"
-	"path"
 	"path/filepath"
+	"runtime"
+	"sort"
 	"strings"
+	"sync"
+
+	"github.com/duke-git/lancet/validator"
 )
 
 // IsExist checks if a file or directory exists
@@ -44,7 +54,7 @@ func CreateFile(path string) bool {
 
 // CreateDir create directory in absolute path. param `absPath` like /a/, /a/b/
 func CreateDir(absPath string) error {
-	return os.MkdirAll(path.Dir(absPath), os.ModePerm)
+	return os.MkdirAll(absPath, os.ModePerm)
 }
 
 // IsDir checks if the path is directory or not
@@ -88,7 +98,7 @@ func CopyFile(srcFilePath string, dstFilePath string) error {
 	}
 }
 
-//ClearFile write empty string to path file
+// ClearFile write empty string to path file
 func ClearFile(path string) error {
 	f, err := os.OpenFile(path, os.O_WRONLY|os.O_TRUNC, 0777)
 	if err != nil {
@@ -100,7 +110,7 @@ func ClearFile(path string) error {
 	return err
 }
 
-//ReadFileToString return string of file content
+// ReadFileToString return string of file content
 func ReadFileToString(path string) (string, error) {
 	bytes, err := ioutil.ReadFile(path)
 	if err != nil {
@@ -162,7 +172,15 @@ func ListFileNames(path string) ([]string, error) {
 }
 
 // Zip create zip file, fpath could be a single file or a directory
-func Zip(fpath string, destPath string) error {
+func Zip(path string, destPath string) error {
+	if IsDir(path) {
+		return zipFolder(path, destPath)
+	}
+
+	return zipFile(path, destPath)
+}
+
+func zipFile(filePath string, destPath string) error {
 	zipFile, err := os.Create(destPath)
 	if err != nil {
 		return err
@@ -172,7 +190,33 @@ func Zip(fpath string, destPath string) error {
 	archive := zip.NewWriter(zipFile)
 	defer archive.Close()
 
-	filepath.Walk(fpath, func(path string, info os.FileInfo, err error) error {
+	return addFileToArchive1(filePath, archive)
+}
+
+func zipFolder(folderPath string, destPath string) error {
+	outFile, err := os.Create(destPath)
+	if err != nil {
+		return err
+	}
+	defer outFile.Close()
+
+	w := zip.NewWriter(outFile)
+
+	err = addFileToArchive2(w, folderPath, "")
+	if err != nil {
+		return err
+	}
+
+	err = w.Close()
+	if err != nil {
+		return err
+	}
+
+	return nil
+}
+
+func addFileToArchive1(fpath string, archive *zip.Writer) error {
+	err := filepath.Walk(fpath, func(path string, info os.FileInfo, err error) error {
 		if err != nil {
 			return err
 		}
@@ -188,26 +232,53 @@ func Zip(fpath string, destPath string) error {
 			header.Name += "/"
 		} else {
 			header.Method = zip.Deflate
-		}
-
-		writer, err := archive.CreateHeader(header)
-		if err != nil {
-			return err
-		}
-
-		if !info.IsDir() {
+			writer, err := archive.CreateHeader(header)
+			if err != nil {
+				return err
+			}
 			file, err := os.Open(path)
 			if err != nil {
 				return err
 			}
 			defer file.Close()
-			_, err = io.Copy(writer, file)
-			if err != nil {
+			if _, err := io.Copy(writer, file); err != nil {
 				return err
 			}
 		}
 		return nil
 	})
+	return err
+}
+
+func addFileToArchive2(w *zip.Writer, basePath, baseInZip string) error {
+	files, err := os.ReadDir(basePath)
+	if err != nil {
+		return err
+	}
+	if !strings.HasSuffix(basePath, "/") {
+		basePath = basePath + "/"
+	}
+
+	for _, file := range files {
+		if !file.IsDir() {
+			dat, err := os.ReadFile(basePath + file.Name())
+			if err != nil {
+				return err
+			}
+
+			f, err := w.Create(baseInZip + file.Name())
+			if err != nil {
+				return err
+			}
+			_, err = f.Write(dat)
+			if err != nil {
+				return err
+			}
+		} else if file.IsDir() {
+			newBase := basePath + file.Name() + "/"
+			addFileToArchive2(w, newBase, baseInZip+file.Name()+"/")
+		}
+	}
 
 	return nil
 }
@@ -254,6 +325,64 @@ func UnZip(zipFile string, destPath string) error {
 	return nil
 }
 
+// ZipAppendEntry append a single file or directory by fpath to an existing zip file.
+// Play: https://go.dev/play/p/cxvaT8TRNQp
+func ZipAppendEntry(fpath string, destPath string) error {
+	tempFile, err := os.CreateTemp("", "temp.zip")
+	if err != nil {
+		return err
+	}
+	defer os.Remove(tempFile.Name())
+
+	zipReader, err := zip.OpenReader(destPath)
+	if err != nil {
+		return err
+	}
+
+	archive := zip.NewWriter(tempFile)
+
+	for _, zipItem := range zipReader.File {
+		zipItemReader, err := zipItem.Open()
+		if err != nil {
+			return err
+		}
+		header, err := zip.FileInfoHeader(zipItem.FileInfo())
+		if err != nil {
+			return err
+		}
+		header.Name = zipItem.Name
+		targetItem, err := archive.CreateHeader(header)
+		if err != nil {
+			return err
+		}
+		_, err = io.Copy(targetItem, zipItemReader)
+		if err != nil {
+			return err
+		}
+	}
+
+	err = addFileToArchive1(fpath, archive)
+
+	if err != nil {
+		return err
+	}
+
+	err = zipReader.Close()
+	if err != nil {
+		return err
+	}
+	err = archive.Close()
+	if err != nil {
+		return err
+	}
+	err = tempFile.Close()
+	if err != nil {
+		return err
+	}
+
+	return CopyFile(tempFile.Name(), destPath)
+}
+
 func safeFilepathJoin(path1, path2 string) (string, error) {
 	relPath, err := filepath.Rel(".", path2)
 	if err != nil || strings.HasPrefix(relPath, "..") {
@@ -318,3 +447,338 @@ func MiMeType(file interface{}) string {
 	}
 	return mediatype
 }
+
+// CurrentPath return current absolute path.
+func CurrentPath() string {
+	var absPath string
+	_, filename, _, ok := runtime.Caller(1)
+	if ok {
+		absPath = filepath.Dir(filename)
+	}
+
+	return absPath
+}
+
+// IsZipFile checks if file is zip or not.
+func IsZipFile(filepath string) bool {
+	f, err := os.Open(filepath)
+	if err != nil {
+		return false
+	}
+	defer f.Close()
+
+	buf := make([]byte, 4)
+	if n, err := f.Read(buf); err != nil || n < 4 {
+		return false
+	}
+
+	return bytes.Equal(buf, []byte("PK\x03\x04"))
+}
+
+// FileSize returns file size in bytes.
+func FileSize(path string) (int64, error) {
+	f, err := os.Stat(path)
+	if err != nil {
+		return 0, err
+	}
+	return f.Size(), nil
+}
+
+// MTime returns file modified time.
+func MTime(filepath string) (int64, error) {
+	f, err := os.Stat(filepath)
+	if err != nil {
+		return 0, err
+	}
+	return f.ModTime().Unix(), nil
+}
+
+// Sha returns file sha value, param `shaType` should be 1, 256 or 512.
+func Sha(filepath string, shaType ...int) (string, error) {
+	file, err := os.Open(filepath)
+	if err != nil {
+		return "", err
+	}
+	defer file.Close()
+
+	h := sha1.New()
+	if len(shaType) > 0 {
+		if shaType[0] == 1 {
+			h = sha1.New()
+		} else if shaType[0] == 256 {
+			h = sha256.New()
+		} else if shaType[0] == 512 {
+			h = sha512.New()
+		} else {
+			return "", errors.New("param `shaType` should be 1, 256 or 512.")
+		}
+	}
+
+	_, err = io.Copy(h, file)
+
+	if err != nil {
+		return "", err
+	}
+
+	sha := fmt.Sprintf("%x", h.Sum(nil))
+
+	return sha, nil
+
+}
+
+// ReadCsvFile read file content into slice.
+func ReadCsvFile(filepath string, delimiter ...rune) ([][]string, error) {
+	f, err := os.Open(filepath)
+	if err != nil {
+		return nil, err
+	}
+	defer f.Close()
+
+	reader := csv.NewReader(f)
+	if len(delimiter) > 0 {
+		reader.Comma = delimiter[0]
+	}
+
+	records, err := reader.ReadAll()
+	if err != nil {
+		return nil, err
+	}
+
+	return records, nil
+}
+
+// WriteCsvFile write content to target csv file.
+func WriteCsvFile(filepath string, records [][]string, append bool, delimiter ...rune) error {
+	flag := os.O_RDWR | os.O_CREATE
+
+	if append {
+		flag = flag | os.O_APPEND
+	}
+
+	f, err := os.OpenFile(filepath, flag, 0644)
+	if err != nil {
+		return err
+	}
+
+	defer f.Close()
+
+	writer := csv.NewWriter(f)
+	// 设置默认分隔符为逗号，除非另外指定
+	if len(delimiter) > 0 {
+		writer.Comma = delimiter[0]
+	} else {
+		writer.Comma = ','
+	}
+
+	// 遍历所有记录并处理包含分隔符或双引号的单元格
+	for i := range records {
+		for j := range records[i] {
+			records[i][j] = escapeCSVField(records[i][j], writer.Comma)
+		}
+	}
+
+	return writer.WriteAll(records)
+}
+
+// escapeCSVField 处理单元格内容，如果包含分隔符，则用双引号包裹
+func escapeCSVField(field string, delimiter rune) string {
+	// 替换所有的双引号为两个双引号
+	escapedField := strings.ReplaceAll(field, "\"", "\"\"")
+
+	// 如果字段包含分隔符、双引号或换行符，用双引号包裹整个字段
+	if strings.ContainsAny(escapedField, string(delimiter)+"\"\n") {
+		escapedField = fmt.Sprintf("\"%s\"", escapedField)
+	}
+
+	return escapedField
+}
+
+// WriteMapsToCsv write slice of map to csv file.
+// Play: https://go.dev/play/p/umAIomZFV1c
+// filepath: Path to the CSV file.
+// records: Slice of maps to be written. the value of map should be basic type.
+// the maps will be sorted by key in alphabeta order, then be written into csv file.
+// appendToExistingFile: If true, data will be appended to the file if it exists.
+// delimiter: Delimiter to use in the CSV file.
+// headers: order of the csv column headers, needs to be consistent with the key of the map.
+func WriteMapsToCsv(filepath string, records []map[string]interface{}, appendToExistingFile bool, delimiter rune, headers ...[]string) error {
+	for _, record := range records {
+		for _, value := range record {
+			if !isCsvSupportedType(value) {
+				return errors.New("unsupported value type detected; only basic types are supported: \nbool, rune, string, int, int64, float32, float64, uint, byte, complex128, complex64, uintptr")
+			}
+		}
+	}
+
+	var columnHeaders []string
+	if len(headers) > 0 {
+		columnHeaders = headers[0]
+	} else {
+		for key := range records[0] {
+			columnHeaders = append(columnHeaders, key)
+		}
+		// sort keys in alphabeta order
+		sort.Strings(columnHeaders)
+	}
+
+	var datasToWrite [][]string
+	if !appendToExistingFile {
+		datasToWrite = append(datasToWrite, columnHeaders)
+	}
+
+	for _, record := range records {
+		var row []string
+		for _, h := range columnHeaders {
+			row = append(row, fmt.Sprintf("%v", record[h]))
+		}
+		datasToWrite = append(datasToWrite, row)
+	}
+
+	return WriteCsvFile(filepath, datasToWrite, appendToExistingFile, delimiter)
+}
+
+// check if the value of map which to be written into csv is basic type.
+func isCsvSupportedType(v interface{}) bool {
+	switch v.(type) {
+	case bool, rune, string, int, int64, float32, float64, uint, byte, complex128, complex64, uintptr:
+		return true
+	default:
+		return false
+	}
+}
+
+// WriteStringToFile write string to target file.
+func WriteStringToFile(filepath string, content string, append bool) error {
+	flag := os.O_RDWR | os.O_CREATE
+	if append {
+		flag = flag | os.O_APPEND
+	}
+
+	f, err := os.OpenFile(filepath, flag, 0644)
+	if err != nil {
+		return err
+	}
+	defer f.Close()
+
+	_, err = f.WriteString(content)
+	return err
+}
+
+// WriteBytesToFile write bytes to target file.
+func WriteBytesToFile(filepath string, content []byte) error {
+	f, err := os.OpenFile(filepath, os.O_WRONLY|os.O_CREATE|os.O_TRUNC, 0644)
+	if err != nil {
+		return err
+	}
+
+	defer f.Close()
+
+	_, err = f.Write(content)
+	return err
+}
+
+// ReadFile get file reader by a url or a local file.
+func ReadFile(path string) (reader io.ReadCloser, closeFn func(), err error) {
+	switch {
+	case validator.IsUrl(path):
+		resp, err := http.Get(path)
+		if err != nil {
+			return nil, func() {}, err
+		}
+		return resp.Body, func() { resp.Body.Close() }, nil
+	case IsExist(path):
+		reader, err := os.Open(path)
+		if err != nil {
+			return nil, func() {}, err
+		}
+		return reader, func() { reader.Close() }, nil
+	default:
+		return nil, func() {}, errors.New("unknown file type")
+	}
+}
+
+// ChunkRead 从文件的指定偏移读取块并返回块内所有行
+func ChunkRead(f *os.File, offset int64, size int, bufPool *sync.Pool) []string {
+	buf := bufPool.Get().([]byte)[:size] // 从Pool获取缓冲区并调整大小
+	n, err := f.ReadAt(buf, offset)      // 从指定偏移读取数据到缓冲区
+	if err != nil && err != io.EOF {
+		log.Fatal(err)
+	}
+	buf = buf[:n] // 调整切片以匹配实际读取的字节数
+
+	var lines []string
+	var lineStart int
+	for i, b := range buf {
+		if b == '\n' {
+			line := string(buf[lineStart:i]) // 不包括换行符
+			lines = append(lines, line)
+			lineStart = i + 1 // 设置下一行的开始
+		}
+	}
+
+	if lineStart < len(buf) { // 处理块末尾的行
+		line := string(buf[lineStart:])
+		lines = append(lines, line)
+	}
+	bufPool.Put(buf) // 读取完成后，将缓冲区放回Pool
+	return lines
+}
+
+// 并行读取文件并将每个块的行发送到指定通道
+// filePath 文件路径
+// ChunkSizeMB 分块的大小（单位MB，设置为0时使用默认100MB）,设置过大反而不利，视情调整
+// MaxGoroutine 并发读取分块的数量，设置为0时使用CPU核心数
+// linesCh用于接收返回结果的通道。
+func ParallelChunkRead(filePath string, linesCh chan<- []string, ChunkSizeMB, MaxGoroutine int) {
+	if ChunkSizeMB == 0 {
+		ChunkSizeMB = 100
+	}
+	ChunkSize := ChunkSizeMB * 1024 * 1024
+	// 内存复用
+	bufPool := sync.Pool{
+		New: func() interface{} {
+			return make([]byte, 0, ChunkSize)
+		},
+	}
+
+	if MaxGoroutine == 0 {
+		MaxGoroutine = runtime.NumCPU() // 设置为0时使用CPU核心数
+	}
+
+	f, err := os.Open(filePath)
+	if err != nil {
+		log.Fatalf("failed to open file: %v", err)
+	}
+	defer f.Close()
+
+	info, err := f.Stat()
+	if err != nil {
+		log.Fatalf("failed to get file info: %v", err)
+	}
+
+	wg := sync.WaitGroup{}
+	chunkOffsetCh := make(chan int64, MaxGoroutine)
+
+	// 分配工作
+	go func() {
+		for i := int64(0); i < info.Size(); i += int64(ChunkSize) {
+			chunkOffsetCh <- i
+		}
+		close(chunkOffsetCh)
+	}()
+
+	// 启动工作协程
+	for i := 0; i < MaxGoroutine; i++ {
+		wg.Add(1)
+		go func() {
+			for chunkOffset := range chunkOffsetCh {
+				linesCh <- ChunkRead(f, chunkOffset, ChunkSize, &bufPool)
+			}
+			wg.Done()
+		}()
+	}
+
+	// 等待所有解析完成后关闭行通道
+	wg.Wait()
+	close(linesCh)
+}

fileutil/file_test.go

@@ -1,6 +1,7 @@
 package fileutil
 
 import (
+	"io"
 	"os"
 	"testing"
 
@@ -182,6 +183,44 @@ func TestZipAndUnZip(t *testing.T) {
 	os.RemoveAll(unZipPath)
 }
 
+func TestZipAppendEntry(t *testing.T) {
+	assert := internal.NewAssert(t, "TestZipAppendEntry")
+
+	zipFile := "./text.zip"
+	err := CopyFile("./testdata/file.go.zip", zipFile)
+	assert.IsNil(err)
+
+	srcFile := "./text.txt"
+	CreateFile(srcFile)
+
+	file, _ := os.OpenFile(srcFile, os.O_WRONLY|os.O_TRUNC, os.ModePerm)
+
+	_, err = file.WriteString("hello\nworld")
+	if err != nil {
+		t.Fail()
+	}
+	file.Close()
+
+	err = ZipAppendEntry(srcFile, zipFile)
+	assert.IsNil(err)
+
+	err = ZipAppendEntry("./testdata", zipFile)
+	assert.IsNil(err)
+
+	unZipPath := "./unzip"
+	err = UnZip(zipFile, unZipPath)
+	assert.IsNil(err)
+
+	assert.Equal(true, IsExist("./unzip/text.txt"))
+	assert.Equal(true, IsExist("./unzip/file.go"))
+	assert.Equal(true, IsExist("./unzip/testdata/file.go.zip"))
+	assert.Equal(true, IsExist("./unzip/testdata/test.txt"))
+
+	os.Remove(srcFile)
+	os.Remove(zipFile)
+	os.RemoveAll(unZipPath)
+}
+
 func TestFileMode(t *testing.T) {
 	assert := internal.NewAssert(t, "TestFileMode")
 
@@ -221,3 +260,192 @@ func TestMiMeType(t *testing.T) {
 	assert.Equal("text/plain; charset=utf-8", MiMeType(f))
 	assert.Equal("text/plain; charset=utf-8", MiMeType("./file.go"))
 }
+
+func TestCurrentPath(t *testing.T) {
+	absPath := CurrentPath()
+	t.Log(absPath)
+}
+
+func TestIsZipFile(t *testing.T) {
+	assert := internal.NewAssert(t, "TestIsZipFile")
+
+	assert.Equal(false, IsZipFile("./file.go"))
+	assert.Equal(true, IsZipFile("./testdata/file.go.zip"))
+}
+
+func TestFileSize(t *testing.T) {
+	assert := internal.NewAssert(t, "TestFileSize")
+
+	size, err := FileSize("./testdata/test.txt")
+
+	assert.IsNil(err)
+	assert.Equal(int64(20), size)
+}
+
+func TestMTime(t *testing.T) {
+	// assert := internal.NewAssert(t, "TestMTime")
+
+	// mtime, err := MTime("./testdata/test.txt")
+
+	// assert.IsNil(err)
+	// assert.Equal(int64(1682478195), mtime)
+}
+
+func TestSha(t *testing.T) {
+	assert := internal.NewAssert(t, "TestSha")
+
+	sha1, err := Sha("./testdata/test.txt", 1)
+	assert.IsNil(err)
+
+	sha256, err := Sha("./testdata/test.txt", 256)
+	assert.IsNil(err)
+
+	sha512, err := Sha("./testdata/test.txt", 512)
+
+	assert.IsNil(err)
+	assert.Equal("dda3cf10c5a6ff6c6659a497bf7261b287af2bc7", sha1)
+	assert.Equal("aa6d0a3fbc3442c228d606da09e0c1dc98c69a1cac3da1909199e0266171df35", sha256)
+	assert.Equal("d22aba2a1b7a2e2f512756255cc1c3708905646920cb1eb95e45b531ba74774dbbb89baebf1f716220eb9cf4908f1cfc5b2a01267704d9a59f59d77cab609870", sha512)
+}
+
+func TestReadCsvFile(t *testing.T) {
+	assert := internal.NewAssert(t, "TestReadCsvFile")
+
+	content, err := ReadCsvFile("./testdata/demo.csv")
+	t.Log(content)
+
+	assert.IsNil(err)
+
+	assert.Equal(3, len(content))
+	assert.Equal(3, len(content[0]))
+	assert.Equal("Bob", content[0][0])
+}
+
+func TestWriteCsvFile(t *testing.T) {
+	assert := internal.NewAssert(t, "TestWriteCsvFile")
+
+	csvFilePath := "./testdata/test1.csv"
+	content := [][]string{
+		{"Lili", "22", "female"},
+		{"Jim", "21", "male"},
+	}
+
+	err := WriteCsvFile(csvFilePath, content, false)
+	assert.IsNil(err)
+
+	readContent, err := ReadCsvFile(csvFilePath)
+
+	assert.IsNil(err)
+
+	assert.Equal(2, len(readContent))
+	assert.Equal(3, len(readContent[0]))
+	assert.Equal("Lili", content[0][0])
+}
+
+func TestWriteMapsToCsv(t *testing.T) {
+	assert := internal.NewAssert(t, "TestWriteMapsToCSV")
+
+	csvFilePath := "./testdata/test4.csv"
+	records := []map[string]interface{}{
+		{"Name": "Lili", "Age": "22", "Gender": "female"},
+		{"Name": "Jim", "Age": "21", "Gender": "male"},
+	}
+
+	headers := []string{"Name", "Age", "Gender"}
+	err := WriteMapsToCsv(csvFilePath, records, false, ';', headers)
+
+	assert.IsNil(err)
+
+	content, err := ReadCsvFile(csvFilePath, ';')
+
+	assert.IsNil(err)
+
+	assert.Equal(3, len(content))
+	assert.Equal(3, len(content[0]))
+	assert.Equal("Lili", content[1][0])
+	assert.Equal("22", content[1][1])
+	assert.Equal("female", content[1][2])
+}
+
+func TestWriteStringToFile(t *testing.T) {
+	assert := internal.NewAssert(t, "TestWriteStringToFile")
+
+	filepath := "./test.txt"
+
+	file, err := os.Create(filepath)
+	if err != nil {
+		t.Fail()
+	}
+
+	defer file.Close()
+
+	err = WriteStringToFile(filepath, "hello", false)
+	if err != nil {
+		t.Fail()
+	}
+
+	content1, err := ReadFileToString(filepath)
+	if err != nil {
+		t.Fail()
+	}
+
+	err = WriteStringToFile(filepath, " world", true)
+	if err != nil {
+		t.Fail()
+	}
+
+	content2, err := os.ReadFile(filepath)
+	if err != nil {
+		t.Fail()
+	}
+
+	assert.Equal("hello", content1)
+	assert.Equal("hello world", string(content2))
+
+	os.Remove(filepath)
+}
+
+func TestWriteBytesToFile(t *testing.T) {
+	assert := internal.NewAssert(t, "TestWriteBytesToFile")
+
+	filepath := "./bytes.txt"
+
+	file, err := os.Create(filepath)
+	if err != nil {
+		t.Fail()
+	}
+
+	defer file.Close()
+
+	err = WriteBytesToFile(filepath, []byte("hello"))
+	if err != nil {
+		t.Fail()
+	}
+
+	content, err := os.ReadFile(filepath)
+	if err != nil {
+		t.Fail()
+	}
+
+	assert.Equal("hello", string(content))
+
+	os.Remove(filepath)
+}
+
+func TestReadFile(t *testing.T) {
+	reader, close, err := ReadFile("https://httpbin.org/robots.txt")
+	if err != nil {
+		t.Fail()
+	}
+	defer close()
+
+	dat, err := io.ReadAll(reader)
+	if err != nil {
+		t.Fail()
+	}
+
+	want := `User-agent: *
+Disallow: /deny
+`
+	internal.NewAssert(t, "TestReadFile").Equal(want, string(dat))
+}

fileutil/testdata/demo.csv

@@ -0,0 +1,3 @@
+Bob, 12, male
+Duke, 14, male
+Lucy, 16, female

fileutil/testdata/test.txt

@@ -0,0 +1 @@
+this is a test file.

fileutil/testdata/test1.csv

@@ -0,0 +1,3 @@
+Lili,22,female
+Jim,21,male
+

fileutil/testdata/test4.csv

@@ -0,0 +1,3 @@
+Name;Age;Gender
+Lili;22;female
+Jim;21;male

formatter/formatter.go

@@ -4,14 +4,227 @@
 // Package formatter implements some functions to format string, struct.
 package formatter
 
-import "strings"
+import (
+	"encoding/json"
+	"fmt"
+	"io"
+	"math"
+	"strconv"
+	"strings"
+	"unicode"
 
-// Comma add comma to number by every 3 numbers from right. ahead by symbol char
-func Comma(v interface{}, symbol string) string {
-	s := numString(v)
-	dotIndex := strings.Index(s, ".")
-	if dotIndex != -1 {
-		return symbol + commaString(s[:dotIndex]) + s[dotIndex:]
+	"github.com/duke-git/lancet/convertor"
+)
+
+// Comma add comma to a number value by every 3 numbers from right. ahead by prefix symbol char.
+// if value is invalid number string eg "aa", return empty string
+// Comma("12345", "$") => "$12,345", Comma(12345, "$") => "$12,345"
+func Comma(value interface{}, prefixSymbol string) string {
+	numString := convertor.ToString(value)
+
+	_, err := strconv.ParseFloat(numString, 64)
+	if err != nil {
+		return ""
 	}
-	return symbol + commaString(s)
+
+	isNegative := strings.HasPrefix(numString, "-")
+	if isNegative {
+		numString = numString[1:]
+	}
+
+	index := strings.Index(numString, ".")
+	if index == -1 {
+		index = len(numString)
+	}
+
+	for index > 3 {
+		index -= 3
+		numString = numString[:index] + "," + numString[index:]
+	}
+
+	if isNegative {
+		numString = "-" + numString
+	}
+
+	return prefixSymbol + numString
+}
+
+// Pretty data to JSON string.
+func Pretty(v interface{}) (string, error) {
+	out, err := json.MarshalIndent(v, "", "    ")
+	return string(out), err
+}
+
+// PrettyToWriter pretty encode data to writer.
+func PrettyToWriter(v interface{}, out io.Writer) error {
+	enc := json.NewEncoder(out)
+	enc.SetIndent("", "    ")
+
+	if err := enc.Encode(v); err != nil {
+		return err
+	}
+
+	return nil
+}
+
+// http://en.wikipedia.org/wiki/Binary_prefix
+const (
+	// Decimal
+	UnitB  = 1
+	UnitKB = 1000
+	UnitMB = 1000 * UnitKB
+	UnitGB = 1000 * UnitMB
+	UnitTB = 1000 * UnitGB
+	UnitPB = 1000 * UnitTB
+	UnitEB = 1000 * UnitPB
+
+	// Binary
+	UnitBiB = 1
+	UnitKiB = 1024
+	UnitMiB = 1024 * UnitKiB
+	UnitGiB = 1024 * UnitMiB
+	UnitTiB = 1024 * UnitGiB
+	UnitPiB = 1024 * UnitTiB
+	UnitEiB = 1024 * UnitPiB
+)
+
+// type byteUnitMap map[byte]int64
+
+var (
+	decimalByteMap = map[string]uint64{
+		"b":  UnitB,
+		"kb": UnitKB,
+		"mb": UnitMB,
+		"gb": UnitGB,
+		"tb": UnitTB,
+		"pb": UnitPB,
+		"eb": UnitEB,
+
+		// Without suffix
+		"":  UnitB,
+		"k": UnitKB,
+		"m": UnitMB,
+		"g": UnitGB,
+		"t": UnitTB,
+		"p": UnitPB,
+		"e": UnitEB,
+	}
+
+	binaryByteMap = map[string]uint64{
+		"bi":  UnitBiB,
+		"kib": UnitKiB,
+		"mib": UnitMiB,
+		"gib": UnitGiB,
+		"tib": UnitTiB,
+		"pib": UnitPiB,
+		"eib": UnitEiB,
+
+		// Without suffix
+		"":   UnitBiB,
+		"ki": UnitKiB,
+		"mi": UnitMiB,
+		"gi": UnitGiB,
+		"ti": UnitTiB,
+		"pi": UnitPiB,
+		"ei": UnitEiB,
+	}
+)
+
+var (
+	decimalByteUnits = []string{"B", "KB", "MB", "GB", "TB", "PB", "EB", "ZB", "YB"}
+	binaryByteUnits  = []string{"B", "KiB", "MiB", "GiB", "TiB", "PiB", "EiB", "ZiB", "YiB"}
+)
+
+// DecimalBytes returns a human readable byte size under decimal standard (base 1000)
+// The precision parameter specifies the number of digits after the decimal point, which defaults to 4.
+// Play: https://go.dev/play/p/FPXs1suwRcs
+func DecimalBytes(size float64, precision ...int) string {
+	p := 5
+	if len(precision) > 0 {
+		p = precision[0] + 1
+	}
+	size, unit := calculateByteSize(size, 1000.0, decimalByteUnits)
+
+	return fmt.Sprintf("%.*g%s", p, size, unit)
+}
+
+// BinaryBytes returns a human-readable byte size under binary standard (base 1024)
+// The precision parameter specifies the number of digits after the decimal point, which defaults to 4.
+func BinaryBytes(size float64, precision ...int) string {
+	p := 5
+	if len(precision) > 0 {
+		p = precision[0] + 1
+	}
+	size, unit := calculateByteSize(size, 1024.0, binaryByteUnits)
+
+	return fmt.Sprintf("%.*g%s", p, size, unit)
+}
+
+func calculateByteSize(size float64, base float64, byteUnits []string) (float64, string) {
+	i := 0
+	unitsLimit := len(byteUnits) - 1
+	for size >= base && i < unitsLimit {
+		size = size / base
+		i++
+	}
+	return size, byteUnits[i]
+}
+
+// ParseDecimalBytes return the human readable bytes size string into the amount it represents(base 1000).
+// ParseDecimalBytes("42 MB") -> 42000000, nil
+func ParseDecimalBytes(size string) (uint64, error) {
+	return parseBytes(size, "decimal")
+}
+
+// ParseBinaryBytes return the human readable bytes size string into the amount it represents(base 1024).
+// ParseBinaryBytes("42 mib") -> 44040192, nil
+func ParseBinaryBytes(size string) (uint64, error) {
+	return parseBytes(size, "binary")
+}
+
+// see https://github.com/dustin/go-humanize/blob/master/bytes.go
+func parseBytes(s string, kind string) (uint64, error) {
+	lastDigit := 0
+	hasComma := false
+	for _, r := range s {
+		if !(unicode.IsDigit(r) || r == '.' || r == ',') {
+			break
+		}
+		if r == ',' {
+			hasComma = true
+		}
+		lastDigit++
+	}
+
+	num := s[:lastDigit]
+	if hasComma {
+		num = strings.Replace(num, ",", "", -1)
+	}
+
+	f, err := strconv.ParseFloat(num, 64)
+	if err != nil {
+		return 0, err
+	}
+
+	extra := strings.ToLower(strings.TrimSpace(s[lastDigit:]))
+
+	if kind == "decimal" {
+		if m, ok := decimalByteMap[extra]; ok {
+			f *= float64(m)
+			if f >= math.MaxUint64 {
+				return 0, fmt.Errorf("too large: %v", s)
+			}
+			return uint64(f), nil
+		}
+	} else {
+		if m, ok := binaryByteMap[extra]; ok {
+			f *= float64(m)
+			if f >= math.MaxUint64 {
+				return 0, fmt.Errorf("too large: %v", s)
+			}
+			return uint64(f), nil
+		}
+	}
+
+	return 0, fmt.Errorf("unhandled size name: %v", extra)
 }

formatter/formatter_internal.go

@@ -1,40 +0,0 @@
-package formatter
-
-import (
-	"fmt"
-	"reflect"
-	"strconv"
-	"strings"
-)
-
-func commaString(s string) string {
-	if len(s) <= 3 {
-		return s
-	}
-	return commaString(s[:len(s)-3]) + "," + commaString(s[len(s)-3:])
-}
-
-func numString(value interface{}) string {
-	switch reflect.TypeOf(value).Kind() {
-	case reflect.Int, reflect.Int64, reflect.Float32, reflect.Float64:
-		return fmt.Sprintf("%v", value)
-	case reflect.String:
-		{
-			sv := fmt.Sprintf("%v", value)
-			if strings.Contains(sv, ".") {
-				_, err := strconv.ParseFloat(sv, 64)
-				if err == nil {
-					return sv
-				}
-			} else {
-				_, err := strconv.ParseInt(sv, 10, 64)
-				if err == nil {
-					return sv
-				}
-			}
-		}
-	default:
-		return ""
-	}
-	return ""
-}

formatter/formatter_test.go

@@ -1,6 +1,7 @@
 package formatter
 
 import (
+	"bytes"
 	"testing"
 
 	"github.com/duke-git/lancet/internal"
@@ -12,12 +13,152 @@ func TestComma(t *testing.T) {
 	assert.Equal("", Comma("", ""))
 	assert.Equal("", Comma("aa", ""))
 	assert.Equal("", Comma("aa.a", ""))
-	assert.Equal("", Comma([]int{1}, ""))
 	assert.Equal("123", Comma("123", ""))
 	assert.Equal("12,345", Comma("12345", ""))
+	assert.Equal("12,345.6789", Comma("12345.6789", ""))
+	assert.Equal("123,456,789,000", Comma("123456789000", ""))
+	assert.Equal("12,345,678.9", Comma("12345678.9", ""))
 
 	assert.Equal("12,345", Comma(12345, ""))
 	assert.Equal("$12,345", Comma(12345, "$"))
 	assert.Equal("¥12,345", Comma(12345, "¥"))
 	assert.Equal("12,345.6789", Comma(12345.6789, ""))
+	assert.Equal("12,345.6789", Comma(+12345.6789, ""))
+	assert.Equal("12,345,678.9", Comma(12345678.9, ""))
+	assert.Equal("123,456,789,000", Comma(123456789000, ""))
+
+	assert.Equal("-999", Comma(-999, ""))
+	assert.Equal("-1,000", Comma(-1000, ""))
+	assert.Equal("-1,234,567", Comma(-1234567, ""))
+}
+
+func TestPretty(t *testing.T) {
+	assert := internal.NewAssert(t, "TestPretty")
+
+	cases := []interface{}{
+		"",
+		"abc",
+		123,
+		[]string{"a", "b", "c"},
+		map[string]int{"a": 1},
+		struct {
+			Abc int `json:"abc"`
+		}{Abc: 123},
+	}
+
+	expects := []string{
+		"\"\"",
+		`"abc"`,
+		"123",
+		"[\n    \"a\",\n    \"b\",\n    \"c\"\n]",
+		"{\n    \"a\": 1\n}",
+		"{\n    \"abc\": 123\n}",
+	}
+
+	for i, v := range cases {
+		result, err := Pretty(v)
+
+		assert.IsNil(err)
+
+		t.Log("result -> ", result)
+		assert.Equal(expects[i], result)
+	}
+}
+
+func TestPrettyToWriter(t *testing.T) {
+	assert := internal.NewAssert(t, "TestPrettyToWriter")
+
+	type User struct {
+		Name string `json:"name"`
+		Aage uint   `json:"age"`
+	}
+	user := User{Name: "King", Aage: 10000}
+
+	expects := "{\n    \"name\": \"King\",\n    \"age\": 10000\n}\n"
+
+	buf := &bytes.Buffer{}
+	err := PrettyToWriter(user, buf)
+
+	assert.IsNil(err)
+	assert.Equal(expects, buf.String())
+}
+
+func TestDecimalBytes(t *testing.T) {
+	assert := internal.NewAssert(t, "TestDecimalBytes")
+
+	assert.Equal("1KB", DecimalBytes(1000))
+	assert.Equal("1.024KB", DecimalBytes(1024))
+	assert.Equal("1.2346MB", DecimalBytes(1234567))
+	assert.Equal("1.235MB", DecimalBytes(1234567, 3))
+	assert.Equal("1.123GB", DecimalBytes(float64(1.123*UnitGB)))
+	assert.Equal("2.123TB", DecimalBytes(float64(2.123*UnitTB)))
+	assert.Equal("3.123PB", DecimalBytes(float64(3.123*UnitPB)))
+	assert.Equal("4.123EB", DecimalBytes(float64(4.123*UnitEB)))
+	assert.Equal("1EB", DecimalBytes(float64(1000*UnitPB)))
+}
+
+func TestBinaryBytes(t *testing.T) {
+	assert := internal.NewAssert(t, "TestBinaryBytes")
+
+	assert.Equal("1KiB", BinaryBytes(1024))
+	assert.Equal("1MiB", BinaryBytes(1024*1024))
+	assert.Equal("1.1774MiB", BinaryBytes(1234567))
+	assert.Equal("1.18MiB", BinaryBytes(1234567, 2))
+}
+
+func TestParseDecimalBytes(t *testing.T) {
+	assert := internal.NewAssert(t, "TestParseDecimalBytes")
+
+	cases := map[string]uint64{
+		"12":      uint64(12),
+		"12 k":    uint64(12000),
+		"12 kb":   uint64(12000),
+		"12kb":    uint64(12000),
+		"12k":     uint64(12000),
+		"12K":     uint64(12000),
+		"12KB":    uint64(12000),
+		"12 K":    uint64(12000),
+		"12 KB":   uint64(12000),
+		"12 Kb":   uint64(12000),
+		"12 kB":   uint64(12000),
+		"12.2 KB": uint64(12200),
+	}
+
+	for k, v := range cases {
+		result, err := ParseDecimalBytes(k)
+		assert.Equal(v, result)
+		assert.IsNil(err)
+	}
+
+	_, err := ParseDecimalBytes("12 AB")
+	assert.IsNotNil(err)
+}
+
+func TestParseBinaryBytes(t *testing.T) {
+	assert := internal.NewAssert(t, "TestParseBinaryBytes")
+
+	cases := map[string]uint64{
+		"12":       uint64(12),
+		"12 ki":    uint64(12288),
+		"12 kib":   uint64(12288),
+		"12kib":    uint64(12288),
+		"12ki":     uint64(12288),
+		"12KI":     uint64(12288),
+		"12KIB":    uint64(12288),
+		"12KiB":    uint64(12288),
+		"12 Ki":    uint64(12288),
+		"12 KiB":   uint64(12288),
+		"12 Kib":   uint64(12288),
+		"12 kiB":   uint64(12288),
+		"12.2 KiB": uint64(12492),
+	}
+
+	for k, v := range cases {
+		result, err := ParseBinaryBytes(k)
+		assert.Equal(v, result)
+		assert.IsNil(err)
+	}
+
+	_, err := ParseDecimalBytes("12 AB")
+	assert.IsNotNil(err)
 }

function/function.go

@@ -6,6 +6,7 @@ package function
 
 import (
 	"reflect"
+	"sync"
 	"time"
 )
 
@@ -75,6 +76,7 @@ func Delay(delay time.Duration, fn interface{}, args ...interface{}) {
 }
 
 // Debounced creates a debounced function that delays invoking fn until after wait duration have elapsed since the last time the debounced function was invoked.
+// Deprecated: Use Debounce function instead.
 func Debounced(fn func(), duration time.Duration) func() {
 	// Catch programming error while constructing the closure
 	mustBeFunction(fn)
@@ -94,6 +96,74 @@ func Debounced(fn func(), duration time.Duration) func() {
 	return func() { timer.Reset(duration) }
 }
 
+// Debounce creates a debounced version of the provided function.
+func Debounce(fn func(), delay time.Duration) (debouncedFn func(), cancelFn func()) {
+	var (
+		timer *time.Timer
+		mu    sync.Mutex
+	)
+
+	debouncedFn = func() {
+		mu.Lock()
+		defer mu.Unlock()
+
+		if timer != nil {
+			timer.Stop()
+		}
+
+		timer = time.AfterFunc(delay, func() {
+			fn()
+		})
+	}
+
+	cancelFn = func() {
+		mu.Lock()
+		defer mu.Unlock()
+
+		if timer != nil {
+			timer.Stop()
+		}
+	}
+
+	return debouncedFn, cancelFn
+}
+
+// Throttle creates a throttled version of the provided function.
+// The returned function guarantees that it will only be invoked at most once per interval.
+func Throttle(fn func(), interval time.Duration) func() {
+	var (
+		timer   *time.Timer
+		lastRun time.Time
+		mu      sync.Mutex
+	)
+
+	return func() {
+		mu.Lock()
+		defer mu.Unlock()
+
+		now := time.Now()
+		if now.Sub(lastRun) >= interval {
+			fn()
+			lastRun = now
+			if timer != nil {
+				timer.Stop()
+				timer = nil
+			}
+		} else if timer == nil {
+			delay := interval - now.Sub(lastRun)
+
+			timer = time.AfterFunc(delay, func() {
+				mu.Lock()
+				defer mu.Unlock()
+
+				fn()
+				lastRun = time.Now()
+				timer = nil
+			})
+		}
+	}
+}
+
 // Schedule invoke function every duration time, util close the returned bool chan
 func Schedule(d time.Duration, fn interface{}, args ...interface{}) chan bool {
 	// Catch programming error while constructing the closure
@@ -113,3 +183,15 @@ func Schedule(d time.Duration, fn interface{}, args ...interface{}) chan bool {
 
 	return quit
 }
+
+// Pipeline takes a list of functions and returns a function whose param will be passed into
+// the functions one by one.
+func Pipeline(funcs ...func(interface{}) interface{}) func(interface{}) interface{} {
+	return func(arg interface{}) (result interface{}) {
+		result = arg
+		for _, fn := range funcs {
+			result = fn(result)
+		}
+		return
+	}
+}

function/function_test.go

@@ -43,7 +43,7 @@ func TestBefore(t *testing.T) {
 
 	var res []int64
 	type cb func(args ...interface{}) []reflect.Value
-	appendStr := func(i int, s string, fn cb) {
+	appendStr := func(i int, _ string, fn cb) {
 		v := fn(i)
 		res = append(res, v[0].Int())
 	}
@@ -130,3 +130,163 @@ func TestSchedule(t *testing.T) {
 	expected := []string{"*", "*", "*", "*", "*"}
 	assert.Equal(expected, res)
 }
+
+func TestPipeline(t *testing.T) {
+	assert := internal.NewAssert(t, "TestPipeline")
+
+	addOne := func(x interface{}) interface{} {
+		return x.(int) + 1
+	}
+	double := func(x interface{}) interface{} {
+		return 2 * x.(int)
+	}
+	square := func(x interface{}) interface{} {
+		return x.(int) * x.(int)
+	}
+
+	f := Pipeline(addOne, double, square)
+
+	assert.Equal(36, f(2))
+}
+
+func TestDebounce(t *testing.T) {
+	assert := internal.NewAssert(t, "TestDebounce")
+
+	t.Run("Single call", func(t *testing.T) {
+		callCount := 0
+
+		debouncedFn, _ := Debounce(func() {
+			callCount++
+		}, 500*time.Millisecond)
+
+		debouncedFn()
+
+		time.Sleep(1 * time.Second)
+
+		assert.Equal(1, callCount)
+	})
+
+	t.Run("Multiple calls within debounce interval", func(t *testing.T) {
+		callCount := 0
+
+		debouncedFn, _ := Debounce(func() {
+			callCount++
+		}, 1*time.Second)
+
+		for i := 0; i < 5; i++ {
+			go func(index int) {
+				time.Sleep(time.Duration(index) * 200 * time.Millisecond)
+				debouncedFn()
+			}(i)
+		}
+
+		time.Sleep(2 * time.Second)
+
+		assert.Equal(1, callCount)
+	})
+
+	t.Run("Immediate consecutive calls", func(t *testing.T) {
+		callCount := 0
+
+		debouncedFn, _ := Debounce(func() {
+			callCount++
+		}, 500*time.Millisecond)
+
+		for i := 0; i < 10; i++ {
+			debouncedFn()
+			time.Sleep(50 * time.Millisecond)
+		}
+
+		time.Sleep(1 * time.Second)
+
+		assert.Equal(1, callCount)
+	})
+
+	t.Run("Cancel calls", func(t *testing.T) {
+		callCount := 0
+
+		debouncedFn, cancelFn := Debounce(func() {
+			callCount++
+		}, 500*time.Millisecond)
+
+		debouncedFn()
+
+		cancelFn()
+
+		time.Sleep(1 * time.Second)
+
+		assert.Equal(0, callCount)
+	})
+
+}
+
+func TestThrottle(t *testing.T) {
+	assert := internal.NewAssert(t, "TestThrottle")
+
+	t.Run("Single call", func(t *testing.T) {
+		callCount := 0
+
+		throttledFn := Throttle(func() {
+			callCount++
+		}, 1*time.Second)
+
+		throttledFn()
+
+		time.Sleep(100 * time.Millisecond)
+
+		assert.Equal(1, callCount)
+	})
+
+	t.Run("Multiple calls within throttle interval", func(t *testing.T) {
+		callCount := 0
+
+		throttledFn := Throttle(func() {
+			callCount++
+		}, 1*time.Second)
+
+		for i := 0; i < 5; i++ {
+			throttledFn()
+		}
+
+		time.Sleep(1 * time.Second)
+
+		assert.Equal(1, callCount)
+	})
+
+	t.Run("Mutiple calls space out throttle interval", func(t *testing.T) {
+		callCount := 0
+
+		throttledFn := Throttle(func() {
+			callCount++
+		}, 500*time.Millisecond)
+
+		throttledFn()
+		time.Sleep(600 * time.Millisecond)
+
+		throttledFn()
+		time.Sleep(600 * time.Millisecond)
+
+		throttledFn()
+
+		time.Sleep(1 * time.Second)
+
+		assert.Equal(3, callCount)
+	})
+
+	t.Run("Call function near the end of the interval", func(t *testing.T) {
+		callCount := 0
+
+		throttledFn := Throttle(func() {
+			callCount++
+		}, 1*time.Second)
+
+		throttledFn()
+		time.Sleep(900 * time.Millisecond)
+
+		throttledFn()
+		time.Sleep(200 * time.Millisecond)
+
+		assert.Equal(2, callCount)
+	})
+
+}

internal/assert.go

@@ -5,6 +5,7 @@
 package internal
 
 import (
+	"bytes"
 	"fmt"
 	"reflect"
 	"runtime"
@@ -36,6 +37,52 @@ func (a *Assert) Equal(expected, actual interface{}) {
 	}
 }
 
+// EqualValues asserts that two objects are equal or convertable to the same types and equal.
+// https://github.com/stretchr/testify/assert/assertions.go
+func (a *Assert) EqualValues(expected, actual interface{}) {
+	if !objectsAreEqualValues(expected, actual) {
+		makeTestFailed(a.T, a.CaseName, expected, actual)
+	}
+}
+
+func objectsAreEqualValues(expected, actual interface{}) bool {
+	if objectsAreEqual(expected, actual) {
+		return true
+	}
+
+	actualType := reflect.TypeOf(actual)
+	if actualType == nil {
+		return false
+	}
+	expectedValue := reflect.ValueOf(expected)
+	if expectedValue.IsValid() && expectedValue.Type().ConvertibleTo(actualType) {
+		// Attempt comparison after type conversion
+		return reflect.DeepEqual(expectedValue.Convert(actualType).Interface(), actual)
+	}
+
+	return false
+}
+
+func objectsAreEqual(expected, actual interface{}) bool {
+	if expected == nil || actual == nil {
+		return expected == actual
+	}
+
+	exp, ok := expected.([]byte)
+	if !ok {
+		return reflect.DeepEqual(expected, actual)
+	}
+
+	act, ok := actual.([]byte)
+	if !ok {
+		return false
+	}
+	if exp == nil || act == nil {
+		return exp == nil && act == nil
+	}
+	return bytes.Equal(exp, act)
+}
+
 // NotEqual check if expected is not equal with actual
 func (a *Assert) NotEqual(expected, actual interface{}) {
 	if compare(expected, actual) == compareEqual {

mathutil/mathutil.go

@@ -90,3 +90,135 @@ func TruncRound(x float64, n int) float64 {
 	res, _ := strconv.ParseFloat(newFloat, 64)
 	return res
 }
+
+// FloorToFloat round down to n decimal places.
+func FloorToFloat(x float64, n int) float64 {
+	return math.Floor(x*math.Pow(10, float64(n))) / math.Pow(10.0, float64(n))
+}
+
+// FloorToString round down to n decimal places.
+func FloorToString(x float64, n int) string {
+	tmp := math.Pow(10.0, float64(n))
+	x *= tmp
+	x = math.Floor(x)
+	res := strconv.FormatFloat(x/tmp, 'f', n, 64)
+	return res
+}
+
+// CeilToFloat round up to n decimal places.
+func CeilToFloat(x float64, n int) float64 {
+	pow10n := math.Pow10(n)
+	return math.Ceil(x*pow10n) / pow10n
+}
+
+// CeilToString round up to n decimal places.
+func CeilToString(x float64, n int) string {
+	multiplier := math.Pow(10, float64(n))
+	rounded := math.Ceil(x*multiplier) / multiplier
+
+	return fmt.Sprintf("%.*f", n, rounded)
+}
+
+// AngleToRadian converts angle value to radian value.
+func AngleToRadian(angle float64) float64 {
+	radian := angle * (math.Pi / 180)
+	return radian
+}
+
+// RadianToAngle converts radian value to angle value.
+func RadianToAngle(radian float64) float64 {
+	angle := radian * (180 / math.Pi)
+	return angle
+}
+
+// PointDistance get two points distance.
+func PointDistance(x1, y1, x2, y2 float64) float64 {
+	a := x1 - x2
+	b := y1 - y2
+	c := math.Pow(a, 2) + math.Pow(b, 2)
+
+	return math.Sqrt(c)
+}
+
+// IsPrimes checks if number is prime number.
+func IsPrime(n int) bool {
+	if n < 2 {
+		return false
+	}
+
+	for i := 2; i <= int(math.Sqrt(float64(n))); i++ {
+		if n%i == 0 {
+			return false
+		}
+	}
+
+	return true
+}
+
+// GCD return greatest common divisor (GCD) of integers.
+func GCD(integers ...int) int {
+	result := integers[0]
+
+	for k := range integers {
+		result = gcd(integers[k], result)
+
+		if result == 1 {
+			return 1
+		}
+	}
+
+	return result
+}
+
+// find greatest common divisor (GCD)
+func gcd(a, b int) int {
+	if b == 0 {
+		return a
+	}
+
+	return gcd(b, a%b)
+}
+
+// LCM return Least Common Multiple (LCM) of integers.
+func LCM(integers ...int) int {
+	result := integers[0]
+
+	for k := range integers {
+		result = lcm(integers[k], result)
+	}
+
+	return result
+}
+
+// find Least Common Multiple (LCM) via GCD.
+func lcm(a, b int) int {
+	if a == 0 || b == 0 {
+		panic("lcm function: provide non zero integers only.")
+	}
+	return a * b / gcd(a, b)
+}
+
+// Cos returns the cosine of the radian argument.
+func Cos(radian float64, precision ...int) float64 {
+	t := 1.0 / (2.0 * math.Pi)
+	radian *= t
+	radian -= 0.25 + math.Floor(radian+0.25)
+	radian *= 16.0 * (math.Abs(radian) - 0.5)
+	radian += 0.225 * radian * (math.Abs(radian) - 1.0)
+
+	if len(precision) == 1 {
+		return TruncRound(radian, precision[0])
+	}
+
+	return TruncRound(radian, 3)
+}
+
+// Cos returns the sine of the radian argument.
+func Sin(radian float64, precision ...int) float64 {
+	return Cos((math.Pi / 2) - radian)
+}
+
+// Log returns the logarithm of base n.
+func Log(n, base float64) float64 {
+	return math.Log(n) / math.Log(base)
+}

mathutil/mathutil_test.go

@@ -1,6 +1,7 @@
 package mathutil
 
 import (
+	"math"
 	"testing"
 
 	"github.com/duke-git/lancet/internal"
@@ -70,3 +71,155 @@ func TestTruncRound(t *testing.T) {
 	assert.Equal(TruncRound(0.125, 3), float64(0.125))
 	assert.Equal(TruncRound(33.33333, 2), float64(33.33))
 }
+
+func TestAngleToRadian(t *testing.T) {
+	assert := internal.NewAssert(t, "TestAngleToRadian")
+
+	result1 := AngleToRadian(45)
+	result2 := AngleToRadian(90)
+	result3 := AngleToRadian(180)
+
+	assert.Equal(0.7853981633974483, result1)
+	assert.Equal(1.5707963267948966, result2)
+	assert.Equal(3.141592653589793, result3)
+}
+
+func TestRadianToAngle(t *testing.T) {
+	assert := internal.NewAssert(t, "TestAngleToRadian")
+
+	result1 := RadianToAngle(math.Pi)
+	result2 := RadianToAngle(math.Pi / 2)
+	result3 := RadianToAngle(math.Pi / 4)
+
+	assert.Equal(float64(180), result1)
+	assert.Equal(float64(90), result2)
+	assert.Equal(float64(45), result3)
+}
+
+func TestPointDistance(t *testing.T) {
+	assert := internal.NewAssert(t, "TestPointDistance")
+
+	result1 := PointDistance(1, 1, 4, 5)
+
+	assert.Equal(float64(5), result1)
+}
+
+func TestIsPrime(t *testing.T) {
+	assert := internal.NewAssert(t, "TestIsPrime")
+
+	assert.Equal(false, IsPrime(-1))
+	assert.Equal(false, IsPrime(0))
+	assert.Equal(false, IsPrime(1))
+	assert.Equal(true, IsPrime(2))
+	assert.Equal(true, IsPrime(3))
+	assert.Equal(false, IsPrime(4))
+}
+
+func TestGCD(t *testing.T) {
+	assert := internal.NewAssert(t, "TestGCD")
+
+	assert.Equal(1, GCD(1, 1))
+	assert.Equal(1, GCD(1, -1))
+	assert.Equal(-1, GCD(-1, 1))
+	assert.Equal(-1, GCD(-1, -1))
+
+	assert.Equal(1, GCD(1, 0))
+	assert.Equal(1, GCD(0, 1))
+	assert.Equal(-1, GCD(-1, 0))
+	assert.Equal(-1, GCD(0, -1))
+
+	assert.Equal(1, GCD(1, -2))
+	assert.Equal(1, GCD(-2, 1))
+	assert.Equal(-1, GCD(-1, 2))
+	assert.Equal(-1, GCD(2, -1))
+
+	assert.Equal(-1, GCD(-1, -2))
+	assert.Equal(-1, GCD(-2, -1))
+
+	assert.Equal(-9, GCD(-27, -36))
+	assert.Equal(3, GCD(3, 6, 9))
+}
+
+func TestLCM(t *testing.T) {
+	assert := internal.NewAssert(t, "TestLCM")
+
+	assert.Equal(1, LCM(1))
+	assert.Equal(-1, LCM(-1))
+	assert.Equal(-1, LCM(1, -1))
+	assert.Equal(1, LCM(-1, 1))
+	assert.Equal(1, LCM(1, 1))
+	assert.Equal(-1, LCM(-1, -1))
+	assert.Equal(2, LCM(1, 2))
+	assert.Equal(18, LCM(3, 6, 9))
+}
+
+func TestCos(t *testing.T) {
+	assert := internal.NewAssert(t, "TestCos")
+
+	assert.EqualValues(1, Cos(0))
+	assert.EqualValues(-0.447, Cos(90))
+	assert.EqualValues(-0.598, Cos(180))
+	assert.EqualValues(-1, Cos(math.Pi))
+	assert.EqualValues(0, Cos(math.Pi/2))
+}
+
+func TestSin(t *testing.T) {
+	assert := internal.NewAssert(t, "TestSin")
+
+	assert.EqualValues(0, Sin(0))
+	assert.EqualValues(0.894, Sin(90))
+	assert.EqualValues(-0.801, Sin(180))
+	assert.EqualValues(0, Sin(math.Pi))
+	assert.EqualValues(1, Sin(math.Pi/2))
+}
+
+func TestLog(t *testing.T) {
+	assert := internal.NewAssert(t, "TestLog")
+
+	assert.EqualValues(3, Log(8, 2))
+	assert.EqualValues(3, TruncRound(Log(27, 3), 0))
+	assert.EqualValues(2.32, TruncRound(Log(5, 2), 2))
+}
+
+func TestFloorToFloat(t *testing.T) {
+	t.Parallel()
+
+	assert := internal.NewAssert(t, "TestFloorToFloat")
+
+	assert.Equal(3.14, FloorToFloat(3.14159, 2))
+	assert.Equal(3.141, FloorToFloat(3.14159, 3))
+	assert.Equal(5.0, FloorToFloat(5, 4))
+	assert.Equal(2.0, FloorToFloat(9/4, 2))
+}
+
+func TestFloorToString(t *testing.T) {
+	t.Parallel()
+
+	assert := internal.NewAssert(t, "TestFloorToString")
+
+	assert.Equal("3.14", FloorToString(3.14159, 2))
+	assert.Equal("3.141", FloorToString(3.14159, 3))
+	assert.Equal("5.0000", FloorToString(5, 4))
+}
+
+func TestCeilToFloat(t *testing.T) {
+	t.Parallel()
+
+	assert := internal.NewAssert(t, "TestCeilToFloat")
+
+	assert.Equal(3.15, CeilToFloat(3.14159, 2))
+	assert.Equal(3.142, CeilToFloat(3.14159, 3))
+	assert.Equal(5.0, CeilToFloat(5, 4))
+	assert.Equal(0.15, CeilToFloat(float64(1)/float64(7), 2))
+}
+
+func TestCeilToString(t *testing.T) {
+	t.Parallel()
+
+	assert := internal.NewAssert(t, "TestCeilToFloat")
+
+	assert.Equal("3.15", CeilToString(3.14159, 2))
+	assert.Equal("3.142", CeilToString(3.14159, 3))
+	assert.Equal("5.0000", CeilToString(5, 4))
+	assert.Equal("0.15", CeilToString(float64(1)/float64(7), 2))
+}

netutil/http.go

@@ -13,30 +13,41 @@
 package netutil
 
 import (
+	"bytes"
+	"crypto/tls"
 	"encoding/json"
 	"errors"
 	"fmt"
+	"io"
+	"mime/multipart"
 	"net/http"
+	"net/url"
+	"os"
+	"reflect"
+	"regexp"
 	"sort"
 	"strings"
+	"time"
+
+	"github.com/duke-git/lancet/slice"
 )
 
-//HttpGet send get http request
+// HttpGet send get http request
 func HttpGet(url string, params ...interface{}) (*http.Response, error) {
 	return doHttpRequest(http.MethodGet, url, params...)
 }
 
-//HttpPost send post http request
+// HttpPost send post http request
 func HttpPost(url string, params ...interface{}) (*http.Response, error) {
 	return doHttpRequest(http.MethodPost, url, params...)
 }
 
-//HttpPut send put http request
+// HttpPut send put http request
 func HttpPut(url string, params ...interface{}) (*http.Response, error) {
 	return doHttpRequest(http.MethodPut, url, params...)
 }
 
-//HttpDelete send delete http request
+// HttpDelete send delete http request
 func HttpDelete(url string, params ...interface{}) (*http.Response, error) {
 	return doHttpRequest(http.MethodDelete, url, params...)
 }
@@ -77,3 +88,289 @@ func ConvertMapToQueryString(param map[string]interface{}) string {
 	}
 	return build.String()
 }
+
+type HttpRequest struct {
+	RawURL      string
+	Method      string
+	Headers     http.Header
+	QueryParams url.Values
+	FormData    url.Values
+	File        *File
+	Body        []byte
+}
+
+// HttpClientConfig contains some configurations for http client
+type HttpClientConfig struct {
+	SSLEnabled       bool
+	TLSConfig        *tls.Config
+	Compressed       bool
+	HandshakeTimeout time.Duration
+	ResponseTimeout  time.Duration
+	Verbose          bool
+}
+
+// defaultHttpClientConfig defalut client config
+var defaultHttpClientConfig = &HttpClientConfig{
+	Compressed:       false,
+	HandshakeTimeout: 20 * time.Second,
+	ResponseTimeout:  40 * time.Second,
+}
+
+// HttpClient is used for sending http request
+type HttpClient struct {
+	*http.Client
+	TLS     *tls.Config
+	Request *http.Request
+	Config  HttpClientConfig
+}
+
+// NewHttpClient make a HttpClient instance
+func NewHttpClient() *HttpClient {
+	client := &HttpClient{
+		Client: &http.Client{
+			Transport: &http.Transport{
+				TLSHandshakeTimeout:   defaultHttpClientConfig.HandshakeTimeout,
+				ResponseHeaderTimeout: defaultHttpClientConfig.ResponseTimeout,
+				DisableCompression:    !defaultHttpClientConfig.Compressed,
+			},
+		},
+		Config: *defaultHttpClientConfig,
+	}
+
+	return client
+}
+
+// NewHttpClientWithConfig make a HttpClient instance with pass config
+func NewHttpClientWithConfig(config *HttpClientConfig) *HttpClient {
+	if config == nil {
+		config = defaultHttpClientConfig
+	}
+
+	client := &HttpClient{
+		Client: &http.Client{
+			Transport: &http.Transport{
+				TLSHandshakeTimeout:   config.HandshakeTimeout,
+				ResponseHeaderTimeout: config.ResponseTimeout,
+				DisableCompression:    !config.Compressed,
+			},
+		},
+		Config: *config,
+	}
+
+	if config.SSLEnabled {
+		client.TLS = config.TLSConfig
+	}
+
+	return client
+}
+
+// SendRequest send http request
+func (client *HttpClient) SendRequest(request *HttpRequest) (*http.Response, error) {
+	err := validateRequest(request)
+	if err != nil {
+		return nil, err
+	}
+
+	rawUrl := request.RawURL
+
+	req, err := http.NewRequest(request.Method, rawUrl, bytes.NewBuffer(request.Body))
+	if err != nil {
+		return nil, err
+	}
+
+	client.setTLS(rawUrl)
+	client.setHeader(req, request.Headers)
+	client.setQueryParam(req, rawUrl, request.QueryParams)
+
+	if request.FormData != nil {
+		if request.File != nil {
+			err = client.setFormData(req, request.FormData, setFile(request.File))
+		} else {
+			err = client.setFormData(req, request.FormData, nil)
+		}
+	}
+
+	client.Request = req
+
+	resp, err := client.Client.Do(req)
+	if err != nil {
+		return nil, err
+	}
+
+	return resp, nil
+}
+
+// DecodeResponse decode response into target object
+func (client *HttpClient) DecodeResponse(resp *http.Response, target interface{}) error {
+	if resp == nil {
+		return errors.New("invalid target param")
+	}
+	defer resp.Body.Close()
+	return json.NewDecoder(resp.Body).Decode(target)
+}
+
+// setTLS set http client transport TLSClientConfig
+func (client *HttpClient) setTLS(rawUrl string) {
+	if strings.HasPrefix(rawUrl, "https") {
+		if transport, ok := client.Client.Transport.(*http.Transport); ok {
+			transport.TLSClientConfig = client.TLS
+		}
+	}
+}
+
+// setHeader set http rquest header
+func (client *HttpClient) setHeader(req *http.Request, headers http.Header) {
+	if headers == nil {
+		headers = make(http.Header)
+	}
+
+	if _, ok := headers["Accept"]; !ok {
+		headers["Accept"] = []string{"*/*"}
+	}
+	if _, ok := headers["Accept-Encoding"]; !ok && client.Config.Compressed {
+		headers["Accept-Encoding"] = []string{"deflate, gzip"}
+	}
+
+	req.Header = headers
+}
+
+// setQueryParam set http request query string param
+func (client *HttpClient) setQueryParam(req *http.Request, reqUrl string, queryParam url.Values) error {
+	if queryParam != nil {
+		if !strings.Contains(reqUrl, "?") {
+			reqUrl = reqUrl + "?" + queryParam.Encode()
+		} else {
+			reqUrl = reqUrl + "&" + queryParam.Encode()
+		}
+		u, err := url.Parse(reqUrl)
+		if err != nil {
+			return err
+		}
+		req.URL = u
+	}
+	return nil
+}
+
+func (client *HttpClient) setFormData(req *http.Request, values url.Values, setFile SetFileFunc) error {
+	if setFile != nil {
+		err := setFile(req, values)
+		if err != nil {
+			return err
+		}
+	} else {
+		formData := []byte(values.Encode())
+		req.Body = io.NopCloser(bytes.NewReader(formData))
+		req.ContentLength = int64(len(formData))
+	}
+	return nil
+}
+
+type SetFileFunc func(req *http.Request, values url.Values) error
+
+// File struct is a combination of file attributes
+type File struct {
+	Content   []byte
+	Path      string
+	FieldName string
+	FileName  string
+}
+
+// setFile set parameters for http request formdata file upload
+func setFile(f *File) SetFileFunc {
+	return func(req *http.Request, values url.Values) error {
+		body := &bytes.Buffer{}
+		writer := multipart.NewWriter(body)
+
+		for key, vals := range values {
+			for _, val := range vals {
+				err := writer.WriteField(key, val)
+				if err != nil {
+					return err
+				}
+			}
+		}
+
+		if f.Content != nil {
+			part, err := writer.CreateFormFile(f.FieldName, f.FileName)
+			if err != nil {
+				return err
+			}
+			part.Write(f.Content)
+		} else if f.Path != "" {
+			file, err := os.Open(f.Path)
+			if err != nil {
+				return err
+			}
+			defer file.Close()
+
+			part, err := writer.CreateFormFile(f.FieldName, f.FileName)
+			if err != nil {
+				return err
+			}
+			_, err = io.Copy(part, file)
+			if err != nil {
+				return err
+			}
+		}
+
+		err := writer.Close()
+		if err != nil {
+			return err
+		}
+
+		req.Body = io.NopCloser(body)
+		req.Header.Set("Content-Type", writer.FormDataContentType())
+		req.ContentLength = int64(body.Len())
+
+		return nil
+	}
+}
+
+// validateRequest check if a request has url, and valid method.
+func validateRequest(req *HttpRequest) error {
+	if req.RawURL == "" {
+		return errors.New("invalid request url")
+	}
+
+	// common HTTP methods
+	methods := []string{"GET", "POST", "PUT", "DELETE", "PATCH",
+		"HEAD", "CONNECT", "OPTIONS", "TRACE"}
+
+	if !slice.Contain(methods, strings.ToUpper(req.Method)) {
+		return errors.New("invalid request method")
+	}
+
+	return nil
+}
+
+// StructToUrlValues convert struct to url valuse,
+// only convert the field which is exported and has `json` tag
+func StructToUrlValues(targetStruct interface{}) url.Values {
+	rv := reflect.ValueOf(targetStruct)
+	rt := reflect.TypeOf(targetStruct)
+
+	if rt.Kind() == reflect.Ptr {
+		rt = rt.Elem()
+	}
+	if rt.Kind() != reflect.Struct {
+		panic(fmt.Errorf("data type %T not support, shuld be struct or pointer to struct", targetStruct))
+	}
+
+	result := url.Values{}
+
+	fieldNum := rt.NumField()
+	pattern := `^[A-Z]`
+	regex := regexp.MustCompile(pattern)
+	for i := 0; i < fieldNum; i++ {
+		name := rt.Field(i).Name
+		tag := rt.Field(i).Tag.Get("json")
+		if regex.MatchString(name) && tag != "" {
+			if strings.Contains(tag, "omitempty") {
+				tag = strings.Split(tag, ",")[0]
+			}
+			result.Add(tag, fmt.Sprintf("%v", rv.Field(i).Interface()))
+		}
+	}
+
+	return result
+}

netutil/http_client.go

@@ -1,228 +0,0 @@
-package netutil
-
-import (
-	"bytes"
-	"crypto/tls"
-	"encoding/json"
-	"errors"
-	"fmt"
-	"io/ioutil"
-	"net/http"
-	"net/url"
-	"reflect"
-	"regexp"
-	"strings"
-	"time"
-
-	"github.com/duke-git/lancet/slice"
-)
-
-// HttpRequest struct is a composed http request
-type HttpRequest struct {
-	RawURL      string
-	Method      string
-	Headers     http.Header
-	QueryParams url.Values
-	FormData    url.Values
-	Body        []byte
-}
-
-// HttpClientConfig contains some configurations for http client
-type HttpClientConfig struct {
-	SSLEnabled       bool
-	TLSConfig        *tls.Config
-	Compressed       bool
-	HandshakeTimeout time.Duration
-	ResponseTimeout  time.Duration
-	Verbose          bool
-}
-
-// defaultHttpClientConfig defalut client config
-var defaultHttpClientConfig = &HttpClientConfig{
-	Compressed:       false,
-	HandshakeTimeout: 20 * time.Second,
-	ResponseTimeout:  40 * time.Second,
-}
-
-// HttpClient is used for sending http request
-type HttpClient struct {
-	*http.Client
-	TLS     *tls.Config
-	Request *http.Request
-	Config  HttpClientConfig
-}
-
-// NewHttpClient make a HttpClient instance
-func NewHttpClient() *HttpClient {
-	client := &HttpClient{
-		Client: &http.Client{
-			Transport: &http.Transport{
-				TLSHandshakeTimeout:   defaultHttpClientConfig.HandshakeTimeout,
-				ResponseHeaderTimeout: defaultHttpClientConfig.ResponseTimeout,
-				DisableCompression:    !defaultHttpClientConfig.Compressed,
-			},
-		},
-		Config: *defaultHttpClientConfig,
-	}
-
-	return client
-}
-
-// NewHttpClientWithConfig make a HttpClient instance with pass config
-func NewHttpClientWithConfig(config *HttpClientConfig) *HttpClient {
-	if config == nil {
-		config = defaultHttpClientConfig
-	}
-
-	client := &HttpClient{
-		Client: &http.Client{
-			Transport: &http.Transport{
-				TLSHandshakeTimeout:   config.HandshakeTimeout,
-				ResponseHeaderTimeout: config.ResponseTimeout,
-				DisableCompression:    !config.Compressed,
-			},
-		},
-		Config: *config,
-	}
-
-	if config.SSLEnabled {
-		client.TLS = config.TLSConfig
-	}
-
-	return client
-}
-
-// SendRequest send http request
-func (client *HttpClient) SendRequest(request *HttpRequest) (*http.Response, error) {
-	err := validateRequest(request)
-	if err != nil {
-		return nil, err
-	}
-
-	rawUrl := request.RawURL
-
-	req, err := http.NewRequest(request.Method, rawUrl, bytes.NewBuffer(request.Body))
-	if err != nil {
-		return nil, err
-	}
-
-	client.setTLS(rawUrl)
-	client.setHeader(req, request.Headers)
-	client.setQueryParam(req, rawUrl, request.QueryParams)
-
-	if request.FormData != nil {
-		client.setFormData(req, request.FormData)
-	}
-
-	client.Request = req
-
-	resp, err := client.Client.Do(req)
-	if err != nil {
-		return nil, err
-	}
-
-	return resp, nil
-}
-
-// DecodeResponse decode response into target object
-func (client *HttpClient) DecodeResponse(resp *http.Response, target interface{}) error {
-	if resp == nil {
-		return errors.New("invalid target param")
-	}
-	defer resp.Body.Close()
-	return json.NewDecoder(resp.Body).Decode(target)
-}
-
-// setTLS set http client transport TLSClientConfig
-func (client *HttpClient) setTLS(rawUrl string) {
-	if strings.HasPrefix(rawUrl, "https") {
-		if transport, ok := client.Client.Transport.(*http.Transport); ok {
-			transport.TLSClientConfig = client.TLS
-		}
-	}
-}
-
-// setHeader set http rquest header
-func (client *HttpClient) setHeader(req *http.Request, headers http.Header) {
-	if headers == nil {
-		headers = make(http.Header)
-	}
-
-	if _, ok := headers["Accept"]; !ok {
-		headers["Accept"] = []string{"*/*"}
-	}
-	if _, ok := headers["Accept-Encoding"]; !ok && client.Config.Compressed {
-		headers["Accept-Encoding"] = []string{"deflate, gzip"}
-	}
-
-	req.Header = headers
-}
-
-// setQueryParam set http request query string param
-func (client *HttpClient) setQueryParam(req *http.Request, reqUrl string, queryParam url.Values) error {
-	if queryParam != nil {
-		if !strings.Contains(reqUrl, "?") {
-			reqUrl = reqUrl + "?" + queryParam.Encode()
-		} else {
-			reqUrl = reqUrl + "&" + queryParam.Encode()
-		}
-		u, err := url.Parse(reqUrl)
-		if err != nil {
-			return err
-		}
-		req.URL = u
-	}
-	return nil
-}
-
-func (client *HttpClient) setFormData(req *http.Request, values url.Values) {
-	formData := []byte(values.Encode())
-	req.Body = ioutil.NopCloser(bytes.NewReader(formData))
-	req.ContentLength = int64(len(formData))
-}
-
-// validateRequest check if a request has url, and valid method.
-func validateRequest(req *HttpRequest) error {
-	if req.RawURL == "" {
-		return errors.New("invalid request url")
-	}
-
-	// common HTTP methods
-	methods := []string{"GET", "POST", "PUT", "DELETE", "PATCH",
-		"HEAD", "CONNECT", "OPTIONS", "TRACE"}
-
-	if !slice.Contain(methods, strings.ToUpper(req.Method)) {
-		return errors.New("invalid request method")
-	}
-
-	return nil
-}
-
-// StructToUrlValues convert struct to url valuse,
-// only convert the field which is exported and has `json` tag
-func StructToUrlValues(targetStruct interface{}) url.Values {
-	rv := reflect.ValueOf(targetStruct)
-	rt := reflect.TypeOf(targetStruct)
-
-	if rt.Kind() == reflect.Ptr {
-		rt = rt.Elem()
-	}
-	if rt.Kind() != reflect.Struct {
-		panic(fmt.Errorf("data type %T not support, shuld be struct or pointer to struct", targetStruct))
-	}
-
-	result := url.Values{}
-
-	fieldNum := rt.NumField()
-	pattern := `^[A-Z]`
-	regex := regexp.MustCompile(pattern)
-	for i := 0; i < fieldNum; i++ {
-		name := rt.Field(i).Name
-		tag := rt.Field(i).Tag.Get("json")
-		if regex.MatchString(name) && tag != "" {
-			result.Add(tag, fmt.Sprintf("%v", rv.Field(i).Interface()))
-		}
-	}
-
-	return result
-}

netutil/http_client_test.go

@@ -1,95 +0,0 @@
-package netutil
-
-import (
-	"io/ioutil"
-	"log"
-	"net/http"
-	"net/url"
-	"testing"
-
-	"github.com/duke-git/lancet/internal"
-)
-
-func TestHttpClient_Get(t *testing.T) {
-	assert := internal.NewAssert(t, "TestHttpClient_Get")
-
-	request := &HttpRequest{
-		RawURL: "https://jsonplaceholder.typicode.com/todos/1",
-		Method: "GET",
-	}
-
-	httpClient := NewHttpClient()
-	resp, err := httpClient.SendRequest(request)
-	if err != nil || resp.StatusCode != 200 {
-		log.Fatal(err)
-	}
-
-	type Todo struct {
-		UserId    int    `json:"userId"`
-		Id        int    `json:"id"`
-		Title     string `json:"title"`
-		Completed bool   `json:"completed"`
-	}
-
-	var todo Todo
-	httpClient.DecodeResponse(resp, &todo)
-
-	assert.Equal(1, todo.Id)
-}
-
-func TestHttpClent_Post(t *testing.T) {
-	header := http.Header{}
-	header.Add("Content-Type", "multipart/form-data")
-
-	postData := url.Values{}
-	postData.Add("userId", "1")
-	postData.Add("title", "testItem")
-
-	request := &HttpRequest{
-		RawURL:   "https://jsonplaceholder.typicode.com/todos",
-		Method:   "POST",
-		Headers:  header,
-		FormData: postData,
-	}
-
-	httpClient := NewHttpClient()
-	resp, err := httpClient.SendRequest(request)
-	if err != nil {
-		log.Fatal(err)
-	}
-
-	body, _ := ioutil.ReadAll(resp.Body)
-	t.Log("response: ", resp.StatusCode, string(body))
-}
-
-func TestStructToUrlValues(t *testing.T) {
-	assert := internal.NewAssert(t, "TestStructToUrlValues")
-
-	type TodoQuery struct {
-		Id     int `json:"id"`
-		UserId int `json:"userId"`
-	}
-	todoQuery := TodoQuery{
-		Id:     1,
-		UserId: 1,
-	}
-	todoValues := StructToUrlValues(todoQuery)
-
-	assert.Equal("1", todoValues.Get("id"))
-	assert.Equal("1", todoValues.Get("userId"))
-
-	request := &HttpRequest{
-		RawURL:      "https://jsonplaceholder.typicode.com/todos",
-		Method:      "GET",
-		QueryParams: todoValues,
-	}
-
-	httpClient := NewHttpClient()
-	resp, err := httpClient.SendRequest(request)
-	if err != nil || resp.StatusCode != 200 {
-		log.Fatal(err)
-	}
-
-	body, _ := ioutil.ReadAll(resp.Body)
-	t.Log("response: ", string(body))
-}

netutil/http_test.go

@@ -1,10 +1,15 @@
 package netutil
 
 import (
+	"bytes"
 	"encoding/json"
+	"io"
 	"io/ioutil"
 	"log"
+	"net/http"
+	"net/http/httptest"
 	"net/url"
+	"os"
 	"testing"
 
 	"github.com/duke-git/lancet/internal"
@@ -50,23 +55,23 @@ func TestHttpPost(t *testing.T) {
 func TestHttpPostFormData(t *testing.T) {
 	apiUrl := "https://jsonplaceholder.typicode.com/todos"
 	header := map[string]string{
-		// "Content-Type": "application/x-www-form-urlencoded",
-		"Content-Type": "multipart/form-data",
-	}
-	type Todo struct {
-		UserId int    `json:"userId"`
-		Title  string `json:"title"`
+		"Content-Type": "application/x-www-form-urlencoded",
+		// "Content-Type": "multipart/form-data",
 	}
+
 	postData := url.Values{}
 	postData.Add("userId", "1")
-	postData.Add("title", "TestAddToDo")
+	postData.Add("title", "TestToDo")
 
-	resp, err := HttpPost(apiUrl, header, postData, nil)
+	// postData := make(map[string]string)
+	// postData["userId"] = "1"
+	// postData["title"] = "title"
+
+	resp, err := HttpPost(apiUrl, header, nil, postData)
 	if err != nil {
 		log.Fatal(err)
-		t.FailNow()
 	}
-	body, _ := ioutil.ReadAll(resp.Body)
+	body, _ := io.ReadAll(resp.Body)
 	t.Log("response: ", resp.StatusCode, string(body))
 }
 
@@ -163,3 +168,193 @@ func TestParseResponse(t *testing.T) {
 	}
 	t.Log("response: ", toDoResp)
 }
+
+func TestHttpClient_Get(t *testing.T) {
+	assert := internal.NewAssert(t, "TestHttpClient_Get")
+
+	request := &HttpRequest{
+		RawURL: "https://jsonplaceholder.typicode.com/todos/1",
+		Method: "GET",
+	}
+
+	httpClient := NewHttpClient()
+	resp, err := httpClient.SendRequest(request)
+	if err != nil || resp.StatusCode != 200 {
+		log.Fatal(err)
+	}
+
+	type Todo struct {
+		UserId    int    `json:"userId"`
+		Id        int    `json:"id"`
+		Title     string `json:"title"`
+		Completed bool   `json:"completed"`
+	}
+
+	var todo Todo
+	httpClient.DecodeResponse(resp, &todo)
+
+	assert.Equal(1, todo.Id)
+}
+
+func TestHttpClent_Post(t *testing.T) {
+	header := http.Header{}
+	header.Add("Content-Type", "multipart/form-data")
+
+	postData := url.Values{}
+	postData.Add("userId", "1")
+	postData.Add("title", "testItem")
+
+	request := &HttpRequest{
+		RawURL:   "https://jsonplaceholder.typicode.com/todos",
+		Method:   "POST",
+		Headers:  header,
+		FormData: postData,
+	}
+
+	httpClient := NewHttpClient()
+	resp, err := httpClient.SendRequest(request)
+	if err != nil {
+		log.Fatal(err)
+	}
+
+	body, _ := ioutil.ReadAll(resp.Body)
+	t.Log("response: ", resp.StatusCode, string(body))
+}
+
+func TestStructToUrlValues(t *testing.T) {
+	assert := internal.NewAssert(t, "TestStructToUrlValues")
+
+	type TodoQuery struct {
+		Id     int    `json:"id"`
+		UserId int    `json:"userId"`
+		Name   string `json:"name,omitempty"`
+		Status string
+	}
+	item1 := TodoQuery{
+		Id:     1,
+		UserId: 123,
+		Name:   "test",
+		Status: "completed",
+	}
+	queryValues1 := StructToUrlValues(item1)
+
+	assert.Equal("1", queryValues1.Get("id"))
+	assert.Equal("123", queryValues1.Get("userId"))
+	assert.Equal("test", queryValues1.Get("name"))
+	assert.Equal("", queryValues1.Get("status"))
+
+	item2 := TodoQuery{
+		Id:     2,
+		UserId: 456,
+	}
+	queryValues2 := StructToUrlValues(item2)
+
+	assert.Equal("2", queryValues2.Get("id"))
+	assert.Equal("456", queryValues2.Get("userId"))
+	assert.Equal("", queryValues2.Get("name"))
+}
+
+func handleFileRequest(t *testing.T, w http.ResponseWriter, r *http.Request) {
+	err := r.ParseMultipartForm(1024)
+	if err != nil {
+		t.Fatal(err)
+	}
+
+	key1 := r.FormValue("key1")
+	expectedKey1 := "value1"
+	if key1 != expectedKey1 {
+		t.Fatalf("expected %s, got %s", expectedKey1, key1)
+	}
+
+	key2 := r.FormValue("key2")
+	expectedKey2 := "value2"
+	if key2 != expectedKey2 {
+		t.Fatalf("expected %s, got %s", expectedKey2, key2)
+	}
+
+	file, header, err := r.FormFile("image")
+	if err != nil {
+		t.Fatal(err)
+	}
+
+	expectedFileName := "testImage.jpg"
+	if header.Filename != expectedFileName {
+		t.Fatalf("expected %s, got %s", expectedFileName, header.Filename)
+	}
+
+	defer file.Close()
+
+	content, err := ioutil.ReadAll(file)
+	if err != nil {
+		t.Fatal(err)
+	}
+
+	expectedContent := []byte("file content")
+	if !bytes.Equal(content, expectedContent) {
+		t.Fatalf("expected %s, got %s", string(expectedContent), string(content))
+	}
+}
+
+func TestSendRequestWithFileContent(t *testing.T) {
+	handler := http.HandlerFunc(func(writer http.ResponseWriter, request *http.Request) {
+		handleFileRequest(t, writer, request)
+	})
+
+	server := httptest.NewServer(handler)
+	defer server.Close()
+
+	client := NewHttpClient()
+	request := &HttpRequest{
+		RawURL:   server.URL,
+		Method:   "POST",
+		File:     &File{Content: []byte("file content"), FieldName: "image", FileName: "testImage.jpg"},
+		FormData: url.Values{"key1": {"value1"}, "key2": {"value2"}},
+	}
+
+	resp, err := client.SendRequest(request)
+	if err != nil {
+		t.Fatal(err)
+	}
+	defer resp.Body.Close()
+
+	if resp.StatusCode != http.StatusOK {
+		t.Fatalf("expected %d, got %d", http.StatusOK, resp.StatusCode)
+	}
+}
+
+func TestSendRequestWithFilePath(t *testing.T) {
+	handler := http.HandlerFunc(func(writer http.ResponseWriter, request *http.Request) {
+		handleFileRequest(t, writer, request)
+	})
+
+	server := httptest.NewServer(handler)
+	defer server.Close()
+
+	tmpFile, err := ioutil.TempFile("", "testImage.jpg")
+	if err != nil {
+		t.Fatal(err)
+	}
+
+	defer os.Remove(tmpFile.Name())
+
+	tmpFile.Write([]byte("file content"))
+	tmpFile.Close()
+
+	client := NewHttpClient()
+	request := &HttpRequest{
+		RawURL:   server.URL,
+		Method:   "POST",
+		File:     &File{Path: tmpFile.Name(), FieldName: "image", FileName: "testImage.jpg"},
+		FormData: url.Values{"key1": {"value1"}, "key2": {"value2"}},
+	}
+
+	resp, err := client.SendRequest(request)
+	if err != nil {
+		t.Fatal(err)
+	}
+	defer resp.Body.Close()
+
+	if resp.StatusCode != http.StatusOK {
+		t.Fatalf("expected %d, got %d", http.StatusOK, resp.StatusCode)
+	}
+}

netutil/net.go

@@ -1,12 +1,22 @@
 package netutil
 
 import (
+	"bytes"
 	"encoding/json"
+	"errors"
+	"io"
 	"io/ioutil"
+	"mime/multipart"
 	"net"
 	"net/http"
 	"net/url"
+	"os"
+	"os/exec"
+	"runtime"
 	"strings"
+	"time"
+
+	"github.com/duke-git/lancet/fileutil"
 )
 
 // GetInternalIp return internal ipv4
@@ -170,3 +180,93 @@ func EncodeUrl(urlStr string) (string, error) {
 
 	return URL.String(), nil
 }
+
+// DownloadFile will upload the file to a server.
+func UploadFile(filepath string, server string) (bool, error) {
+	if !fileutil.IsExist(filepath) {
+		return false, errors.New("file not exist")
+	}
+
+	fileInfo, err := os.Stat(filepath)
+	if err != nil {
+		return false, err
+	}
+
+	bodyBuffer := &bytes.Buffer{}
+	writer := multipart.NewWriter(bodyBuffer)
+
+	formFile, err := writer.CreateFormFile("uploadfile", fileInfo.Name())
+	if err != nil {
+		return false, err
+	}
+
+	srcFile, err := os.Open(filepath)
+	if err != nil {
+		return false, err
+	}
+	defer srcFile.Close()
+
+	_, err = io.Copy(formFile, srcFile)
+	if err != nil {
+		return false, err
+	}
+
+	contentType := writer.FormDataContentType()
+	writer.Close()
+
+	_, err = http.Post(server, contentType, bodyBuffer)
+	if err != nil {
+		return false, err
+	}
+
+	return true, nil
+}
+
+// DownloadFile will download the file exist in url to a local file.
+func DownloadFile(filepath string, url string) error {
+	resp, err := http.Get(url)
+	if err != nil {
+		return err
+	}
+	defer resp.Body.Close()
+
+	out, err := os.Create(filepath)
+	if err != nil {
+		return err
+	}
+	defer out.Close()
+
+	_, err = io.Copy(out, resp.Body)
+
+	return err
+}
+
+// IsPingConnected checks if can ping specified host or not.
+func IsPingConnected(host string) bool {
+	cmd := exec.Command("ping", host, "-c", "4", "-W", "6")
+
+	if runtime.GOOS == "windows" {
+		cmd = exec.Command("ping", host, "-n", "4", "-w", "6")
+	}
+
+	err := cmd.Run()
+	if err != nil {
+		return false
+	}
+
+	return true
+}
+
+// IsTelnetConnected checks if can telnet specified host or not.
+func IsTelnetConnected(host string, port string) bool {
+	adder := host + ":" + port
+	conn, err := net.DialTimeout("tcp", adder, 5*time.Second)
+
+	if err != nil {
+		return false
+	}
+
+	defer conn.Close()
+
+	return true
+}

netutil/net_internal.go

@@ -4,6 +4,7 @@ import (
 	"bytes"
 	"errors"
 	"fmt"
+	"io"
 	"io/ioutil"
 	"net/http"
 	"net/url"
@@ -74,51 +75,34 @@ func setHeaderAndQueryParam(req *http.Request, reqUrl string, header, queryParam
 }
 
 func setHeaderAndQueryAndBody(req *http.Request, reqUrl string, header, queryParam, body interface{}) error {
-	err := setHeader(req, header)
-	if err != nil {
+	if err := setHeader(req, header); err != nil {
 		return err
-	}
-	err = setQueryParam(req, reqUrl, queryParam)
-	if err != nil {
+	} else if err = setQueryParam(req, reqUrl, queryParam); err != nil {
 		return err
-	}
-	if strings.Contains(req.Header.Get("Content-Type"), "multipart/form-data") || req.Header.Get("Content-Type") == "application/x-www-form-urlencoded" {
-		if formData, ok := queryParam.(url.Values); ok {
-			err = setBodyByte(req, []byte(formData.Encode()))
-		}
-		if formData, ok := queryParam.(map[string]string); ok {
-			postData := url.Values{}
-			for k, v := range formData {
-				postData.Set(k, v)
-			}
-			err = setBodyByte(req, []byte(postData.Encode()))
-		}
-
-	} else {
-		err = setBodyByte(req, body)
-	}
-	if err != nil {
+	} else if err = setBodyByte(req, body); err != nil {
 		return err
 	}
 	return nil
 }
 
 func setHeader(req *http.Request, header interface{}) error {
-	if header != nil {
-		switch v := header.(type) {
-		case map[string]string:
-			for k := range v {
-				req.Header.Add(k, v[k])
-			}
-		case http.Header:
-			for k, vv := range v {
-				for _, vvv := range vv {
-					req.Header.Add(k, vvv)
-				}
-			}
-		default:
-			return errors.New("header params type should be http.Header or map[string]string")
+	if header == nil {
+		return nil
+	}
+
+	switch v := header.(type) {
+	case map[string]string:
+		for k := range v {
+			req.Header.Add(k, v[k])
 		}
+	case http.Header:
+		for k, vv := range v {
+			for _, vvv := range vv {
+				req.Header.Add(k, vvv)
+			}
+		}
+	default:
+		return errors.New("header params type should be http.Header or map[string]string")
 	}
 
 	if host := req.Header.Get("Host"); host != "" {
@@ -138,19 +122,22 @@ func setUrl(req *http.Request, reqUrl string) error {
 }
 
 func setQueryParam(req *http.Request, reqUrl string, queryParam interface{}) error {
+	if queryParam == nil {
+		return nil
+	}
+
 	var values url.Values
-	if queryParam != nil {
-		switch v := queryParam.(type) {
-		case map[string]interface{}:
-			values = url.Values{}
-			for k := range v {
-				values.Set(k, fmt.Sprintf("%v", v[k]))
-			}
-		case url.Values:
-			values = v
-		default:
-			return errors.New("query params type should be url.Values or map[string]interface{}")
+
+	switch v := queryParam.(type) {
+	case map[string]interface{}:
+		values = url.Values{}
+		for k := range v {
+			values.Set(k, fmt.Sprintf("%v", v[k]))
 		}
+	case url.Values:
+		values = v
+	default:
+		return errors.New("query params type should be url.Values or map[string]interface{}")
 	}
 
 	// set url
@@ -171,14 +158,36 @@ func setQueryParam(req *http.Request, reqUrl string, queryParam interface{}) err
 }
 
 func setBodyByte(req *http.Request, body interface{}) error {
-	if body != nil {
-		switch b := body.(type) {
-		case []byte:
-			req.Body = ioutil.NopCloser(bytes.NewReader(b))
-			req.ContentLength = int64(len(b))
-		default:
-			return errors.New("body type should be []byte")
+	if body == nil {
+		return nil
+	}
+	var bodyReader *bytes.Reader
+	switch b := body.(type) {
+	case io.Reader:
+		buf := bytes.NewBuffer(nil)
+		if _, err := io.Copy(buf, b); err != nil {
+			return err
 		}
+		req.Body = ioutil.NopCloser(buf)
+		req.ContentLength = int64(buf.Len())
+	case []byte:
+		bodyReader = bytes.NewReader(b)
+		req.Body = ioutil.NopCloser(bodyReader)
+		req.ContentLength = int64(bodyReader.Len())
+	case map[string]interface{}:
+		values := url.Values{}
+		for k := range b {
+			values.Set(k, fmt.Sprintf("%v", b[k]))
+		}
+		bodyReader = bytes.NewReader([]byte(values.Encode()))
+		req.Body = ioutil.NopCloser(bodyReader)
+		req.ContentLength = int64(bodyReader.Len())
+	case url.Values:
+		bodyReader = bytes.NewReader([]byte(b.Encode()))
+		req.Body = ioutil.NopCloser(bodyReader)
+		req.ContentLength = int64(bodyReader.Len())
+	default:
+		return fmt.Errorf("invalid body type: %T", b)
 	}
 	return nil
 }

netutil/net_test.go

@@ -15,14 +15,14 @@ func TestGetInternalIp(t *testing.T) {
 	assert.IsNotNil(ip)
 }
 
-func TestGetPublicIpInfo(t *testing.T) {
-	assert := internal.NewAssert(t, "TestGetPublicIpInfo")
+// func TestGetPublicIpInfo(t *testing.T) {
+// 	assert := internal.NewAssert(t, "TestGetPublicIpInfo")
 
-	publicIpInfo, err := GetPublicIpInfo()
-	assert.IsNil(err)
+// 	publicIpInfo, err := GetPublicIpInfo()
+// 	assert.IsNil(err)
 
-	t.Logf("public ip info is: %+v \n", *publicIpInfo)
-}
+// 	t.Logf("public ip info is: %+v \n", *publicIpInfo)
+// }
 
 func TestIsPublicIP(t *testing.T) {
 	assert := internal.NewAssert(t, "TestIsPublicIP")
@@ -52,3 +52,23 @@ func TestGetMacAddrs(t *testing.T) {
 	macAddrs := GetMacAddrs()
 	t.Log(macAddrs)
 }
+
+func TestIsPingConnected(t *testing.T) {
+	assert := internal.NewAssert(t, "TestIsPingConnected")
+
+	result1 := IsPingConnected("www.baidu.com")
+	assert.Equal(true, result1)
+
+	result2 := IsPingConnected("www.!@#&&&.com")
+	assert.Equal(false, result2)
+}
+
+func TestTelnetConnected(t *testing.T) {
+	assert := internal.NewAssert(t, "TestTelnetConnected")
+
+	result1 := IsTelnetConnected("www.baidu.com", "80")
+	assert.Equal(true, result1)
+
+	result2 := IsTelnetConnected("www.baidu.com", "123")
+	assert.Equal(false, result2)
+}

random/random.go

@@ -8,30 +8,134 @@ import (
 	crand "crypto/rand"
 	"fmt"
 	"io"
+	"math"
 	"math/rand"
 	"time"
+	"unsafe"
+
+	"github.com/duke-git/lancet/mathutil"
 )
 
 const (
-	NUMERAL       = "0123456789"
-	LOWER_LETTERS = "abcdefghijklmnopqrstuvwxyz"
-	UPPER_LETTERS = "ABCDEFGHIJKLMNOPQRSTUVWXYZ"
-	LETTERS       = "abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ"
+	MaximumCapacity = math.MaxInt32>>1 + 1
+	Numeral         = "0123456789"
+	LowwerLetters   = "abcdefghijklmnopqrstuvwxyz"
+	UpperLetters    = "ABCDEFGHIJKLMNOPQRSTUVWXYZ"
+	Letters         = "abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ"
+	SymbolChars     = "!@#$%^&*()_+-=[]{}|;':\",./<>?"
 )
 
-// RandInt generate random int between min and max, maybe min,  not be max
+var rn = rand.NewSource(time.Now().UnixNano())
+
+func init() {
+	rand.Seed(time.Now().UnixNano())
+}
+
+// RandBool generates a random boolean value (true or false).
+func RandBool() bool {
+	return rand.Intn(2) == 1
+}
+
+// RandBoolSlice generates a random boolean slice of specified length.
+func RandBoolSlice(length int) []bool {
+	if length <= 0 {
+		return []bool{}
+	}
+
+	result := make([]bool, length)
+	for i := range result {
+		result[i] = RandBool()
+	}
+
+	return result
+}
+
+// RandInt generate random int between [min, max).
 func RandInt(min, max int) int {
 	if min == max {
 		return min
 	}
+
 	if max < min {
 		min, max = max, min
 	}
-	r := rand.New(rand.NewSource(time.Now().UnixNano()))
-	return r.Intn(max-min) + min
+
+	return rand.Intn(max-min) + min
 }
 
-// RandBytes generate random byte slice
+// RandIntSlice generates a slice of random integers.
+// The generated integers are between min and max (exclusive).
+func RandIntSlice(length, min, max int) []int {
+	if length <= 0 || min > max {
+		return []int{}
+	}
+
+	result := make([]int, length)
+	for i := range result {
+		result[i] = RandInt(min, max)
+	}
+
+	return result
+}
+
+// RandUniqueIntSlice generate a slice of random int of length n that do not repeat.
+func RandUniqueIntSlice(n, min, max int) []int {
+	if min > max {
+		return []int{}
+	}
+	if n > max-min {
+		n = max - min
+	}
+
+	nums := make([]int, n)
+	used := make(map[int]struct{}, n)
+	for i := 0; i < n; {
+		r := RandInt(min, max)
+		if _, use := used[r]; use {
+			continue
+		}
+		used[r] = struct{}{}
+		nums[i] = r
+		i++
+	}
+
+	return nums
+}
+
+// RandFloat generate random float64 number between [min, max) with specific precision.
+func RandFloat(min, max float64, precision int) float64 {
+	if min == max {
+		return min
+	}
+
+	if max < min {
+		min, max = max, min
+	}
+
+	n := rand.Float64()*(max-min) + min
+
+	return mathutil.RoundToFloat(n, precision)
+}
+
+// RandFloats generate a slice of random float64 numbers of length n that do not repeat.
+func RandFloats(n int, min, max float64, precision int) []float64 {
+	nums := make([]float64, n)
+	used := make(map[float64]struct{}, n)
+	for i := 0; i < n; {
+		r := RandFloat(min, max, precision)
+		if _, use := used[r]; use {
+			continue
+		}
+		used[r] = struct{}{}
+		nums[i] = r
+		i++
+	}
+
+	return nums
+}
+
+// RandBytes generate random byte slice.
+// Play: https://go.dev/play/p/EkiLESeXf8d
 func RandBytes(length int) []byte {
 	if length < 1 {
 		return []byte{}
@@ -41,45 +145,116 @@ func RandBytes(length int) []byte {
 	if _, err := io.ReadFull(crand.Reader, b); err != nil {
 		return nil
 	}
+
 	return b
 }
 
-// RandString generate random string
+// RandString generate random alpha string of specified length.
 func RandString(length int) string {
-	return random(LETTERS, length)
+	return random(Letters, length)
 }
 
-// RandUpper generate a random upper case string
-func RandUpper(length int) string {
-	return random(UPPER_LETTERS, length)
-}
-
-// RandLower generate a random lower case string
-func RandLower(length int) string {
-	return random(LOWER_LETTERS, length)
-}
-
-// RandNumeral generate a random numeral string
-func RandNumeral(length int) string {
-	return random(NUMERAL, length)
-}
-
-// RandNumeralOrLetter generate a random numeral or letter string
-func RandNumeralOrLetter(length int) string {
-	return random(NUMERAL+LETTERS, length)
-}
-
-// random generate a random string based on given string range
-func random(s string, length int) string {
-	b := make([]byte, length)
-	r := rand.New(rand.NewSource(time.Now().UnixNano()))
-	for i := range b {
-		b[i] = s[r.Int63()%int64(len(s))]
+// RandString generate a slice of random string of length strLen based on charset.
+// chartset should be one of the following: random.Numeral, random.LowwerLetters, random.UpperLetters
+// random.Letters, random.SymbolChars, random.AllChars. or a combination of them.
+func RandStringSlice(charset string, sliceLen, strLen int) []string {
+	if sliceLen <= 0 || strLen <= 0 {
+		return []string{}
 	}
-	return string(b)
+
+	result := make([]string, sliceLen)
+
+	for i := range result {
+		result[i] = random(charset, strLen)
+	}
+
+	return result
 }
 
-// UUIdV4 generate a random UUID of version 4 according to RFC 4122
+// RandUpper generate a random upper case string of specified length.
+func RandUpper(length int) string {
+	return random(UpperLetters, length)
+}
+
+// RandLower generate a random lower case string of specified length.
+func RandLower(length int) string {
+	return random(LowwerLetters, length)
+}
+
+// RandNumeral generate a random numeral string of specified length.
+func RandNumeral(length int) string {
+	return random(Numeral, length)
+}
+
+// RandNumeralOrLetter generate a random numeral or alpha string of specified length.
+func RandNumeralOrLetter(length int) string {
+	return random(Numeral+Letters, length)
+}
+
+// RandSymbolChar generate a random symbol char of specified length.
+// symbol chars: !@#$%^&*()_+-=[]{}|;':\",./<>?.
+func RandSymbolChar(length int) string {
+	return random(SymbolChars, length)
+}
+
+// nearestPowerOfTwo 返回一个大于等于cap的最近的2的整数次幂，参考java8的hashmap的tableSizeFor函数
+func nearestPowerOfTwo(cap int) int {
+	n := cap - 1
+	n |= n >> 1
+	n |= n >> 2
+	n |= n >> 4
+	n |= n >> 8
+	n |= n >> 16
+	if n < 0 {
+		return 1
+	} else if n >= MaximumCapacity {
+		return MaximumCapacity
+	}
+	return n + 1
+}
+
+// random generate a random string based on given string range.
+func random(s string, length int) string {
+	// 仿照strings.Builder
+	// 创建一个长度为 length 的字节切片
+	bytes := make([]byte, length)
+	strLength := len(s)
+	if strLength <= 0 {
+		return ""
+	} else if strLength == 1 {
+		for i := 0; i < length; i++ {
+			bytes[i] = s[0]
+		}
+		return *(*string)(unsafe.Pointer(&bytes))
+	}
+	// s的字符需要使用多少个比特位数才能表示完
+	// letterIdBits := int(math.Ceil(math.Log2(strLength))),下面比上面的代码快
+	letterIdBits := int(math.Log2(float64(nearestPowerOfTwo(strLength))))
+	// 最大的字母id掩码
+	var letterIdMask int64 = 1<<letterIdBits - 1
+	// 可用次数的最大值
+	letterIdMax := 63 / letterIdBits
+	// 循环生成随机字符串
+	for i, cache, remain := length-1, rn.Int63(), letterIdMax; i >= 0; {
+		// 检查随机数生成器是否用尽所有随机数
+		if remain == 0 {
+			cache, remain = rn.Int63(), letterIdMax
+		}
+		// 从可用字符的字符串中随机选择一个字符
+		if idx := int(cache & letterIdMask); idx < strLength {
+			bytes[i] = s[idx]
+			i--
+		}
+		// 右移比特位数，为下次选择字符做准备
+		cache >>= letterIdBits
+		remain--
+	}
+	// 仿照strings.Builder用unsafe包返回一个字符串，避免拷贝
+	// 将字节切片转换为字符串并返回
+	return *(*string)(unsafe.Pointer(&bytes))
+}
+
+// UUIdV4 generate a random UUID of version 4 according to RFC 4122.
 func UUIdV4() (string, error) {
 	uuid := make([]byte, 16)
 

random/random_test.go

@@ -6,6 +6,7 @@ import (
 	"testing"
 
 	"github.com/duke-git/lancet/internal"
+	"github.com/duke-git/lancet/validator"
 )
 
 func TestRandString(t *testing.T) {
@@ -105,3 +106,125 @@ func TestUUIdV4(t *testing.T) {
 	isUUiDV4 := regexp.MustCompile(`^[0-9a-fA-F]{8}-[0-9a-fA-F]{4}-4[0-9a-fA-F]{3}-[89abAB][0-9a-fA-F]{3}-[0-9a-fA-F]{12}$`)
 	assert.Equal(true, isUUiDV4.MatchString(uuid))
 }
+
+func TestRandUniqueIntSlice(t *testing.T) {
+	assert := internal.NewAssert(t, "TestRandUniqueIntSlice")
+
+	r1 := RandUniqueIntSlice(5, 0, 9)
+	assert.Equal(len(r1), 5)
+	if hasDuplicate(r1) {
+		t.Error("hasDuplicate int")
+	}
+
+	r2 := RandUniqueIntSlice(20, 0, 10)
+	assert.Equal(len(r2), 10)
+	if hasDuplicate(r2) {
+		t.Error("hasDuplicate int")
+	}
+
+	r3 := RandUniqueIntSlice(10, 20, 10)
+	assert.Equal(len(r3), 0)
+
+	r4 := RandUniqueIntSlice(0, 20, 10)
+	assert.Equal(len(r4), 0)
+}
+
+func hasDuplicate(arr []int) bool {
+	elements := make(map[int]bool)
+	for _, v := range arr {
+		if elements[v] {
+			return true
+		}
+		elements[v] = true
+	}
+	return false
+}
+
+func TestRandBool(t *testing.T) {
+	t.Parallel()
+	assert := internal.NewAssert(t, "TestRandBool")
+
+	result := RandBool()
+	assert.Equal(true, result == true || result == false)
+}
+
+func TestRandBoolSlice(t *testing.T) {
+	t.Parallel()
+	assert := internal.NewAssert(t, "TestRandBoolSlice")
+
+	t.Run("empty slice", func(t *testing.T) {
+		bools := RandBoolSlice(-1)
+		assert.Equal([]bool{}, bools)
+
+		bools = RandBoolSlice(0)
+		assert.Equal([]bool{}, bools)
+	})
+
+	t.Run("random bool slice", func(t *testing.T) {
+		bools := RandBoolSlice(6)
+		assert.Equal(6, len(bools))
+
+		for _, b := range bools {
+			assert.Equal(true, b == true || b == false)
+		}
+	})
+}
+
+func TestRandStringSlice(t *testing.T) {
+	t.Parallel()
+	assert := internal.NewAssert(t, "TestRandStringSlice")
+
+	t.Run("empty slice", func(t *testing.T) {
+		strs := RandStringSlice(Letters, -1, -1)
+		assert.Equal([]string{}, strs)
+
+		strs = RandStringSlice(Letters, 0, 0)
+		assert.Equal([]string{}, strs)
+
+		strs = RandStringSlice(Letters, -1, 0)
+		assert.Equal([]string{}, strs)
+
+		strs = RandStringSlice(Letters, 0, -1)
+		assert.Equal([]string{}, strs)
+
+		strs = RandStringSlice(Letters, 1, 0)
+		assert.Equal([]string{}, strs)
+
+		strs = RandStringSlice(Letters, 0, 1)
+		assert.Equal([]string{}, strs)
+	})
+
+	t.Run("random string slice", func(t *testing.T) {
+		strs := RandStringSlice(Letters, 4, 6)
+		assert.Equal(4, len(strs))
+
+		for _, s := range strs {
+			assert.Equal(true, validator.IsAlpha(s))
+			assert.Equal(6, len(s))
+		}
+	})
+}
+
+func TestRandIntSlice(t *testing.T) {
+	t.Parallel()
+	assert := internal.NewAssert(t, "TestRandIntSlice")
+
+	t.Run("empty slice", func(t *testing.T) {
+		numbers := RandIntSlice(-1, 1, 5)
+		assert.Equal([]int{}, numbers)
+
+		numbers = RandIntSlice(0, 1, 5)
+		assert.Equal([]int{}, numbers)
+
+		numbers = RandIntSlice(3, 5, 1)
+		assert.Equal([]int{}, numbers)
+	})
+
+	t.Run("random int slice", func(t *testing.T) {
+		numbers := RandIntSlice(5, 1, 1)
+		assert.Equal([]int{1, 1, 1, 1, 1}, numbers)
+
+		numbers = RandIntSlice(5, 1, 5)
+		assert.Equal(5, len(numbers))
+	})
+}

slice/slice.go

@@ -968,3 +968,16 @@ func AppendIfAbsent(slice interface{}, value interface{}) interface{} {
 	}
 	return out.Interface()
 }
+
+// AppendIfAbsent only absent append the value
+func Join(slice interface{}, separator string) string {
+	sv := sliceValue(slice)
+
+	strs := make([]string, sv.Len())
+
+	for i := 0; i < sv.Len(); i++ {
+		strs[i] = fmt.Sprint(sv.Index(i).Interface())
+	}
+
+	return strings.Join(strs, separator)
+}

slice/slice_test.go

@@ -624,3 +624,15 @@ func TestAppendIfAbsent(t *testing.T) {
 	assert.Equal([]string{"a", "b"}, AppendIfAbsent(str1, "a"))
 	assert.Equal([]string{"a", "b", "c"}, AppendIfAbsent(str1, "c"))
 }
+
+func TestJoin(t *testing.T) {
+	assert := internal.NewAssert(t, "TestJoin")
+
+	nums := []int{1, 2, 3, 4, 5}
+
+	result1 := Join(nums, ",")
+	result2 := Join(nums, "-")
+
+	assert.Equal("1,2,3,4,5", result1)
+	assert.Equal("1-2-3-4-5", result2)
+}

strutil/string.go

@@ -5,11 +5,20 @@
 package strutil
 
 import (
+	"errors"
+	"regexp"
 	"strings"
+	"time"
 	"unicode"
 	"unicode/utf8"
+	"unsafe"
+
+	"math/rand"
 )
 
+// used in `Shuffle` function
+var rng = rand.New(rand.NewSource(int64(time.Now().UnixNano())))
+
 // CamelCase covert string to camelCase string.
 // non letters and numbers will be ignored
 // eg. "Foo-#1😄$_%^&*(1bar" => "foo11Bar"
@@ -66,42 +75,22 @@ func LowerFirst(s string) string {
 	return string(r) + s[size:]
 }
 
-// PadEnd pads string on the right side if it's shorter than size.
+// PadStart pads string on the left and right side if it's shorter than size.
 // Padding characters are truncated if they exceed size.
-func PadEnd(source string, size int, padStr string) string {
-	len1 := len(source)
-	len2 := len(padStr)
-
-	if len1 >= size {
-		return source
-	}
-
-	fill := ""
-	if len2 >= size-len1 {
-		fill = padStr[0 : size-len1]
-	} else {
-		fill = strings.Repeat(padStr, size-len1)
-	}
-	return source + fill[0:size-len1]
+func Pad(source string, size int, padStr string) string {
+	return padAtPosition(source, size, padStr, 0)
 }
 
 // PadStart pads string on the left side if it's shorter than size.
 // Padding characters are truncated if they exceed size.
 func PadStart(source string, size int, padStr string) string {
-	len1 := len(source)
-	len2 := len(padStr)
+	return padAtPosition(source, size, padStr, 1)
+}
 
-	if len1 >= size {
-		return source
-	}
-
-	fill := ""
-	if len2 >= size-len1 {
-		fill = padStr[0 : size-len1]
-	} else {
-		fill = strings.Repeat(padStr, size-len1)
-	}
-	return fill[0:size-len1] + source
+// PadEnd pads string on the right side if it's shorter than size.
+// Padding characters are truncated if they exceed size.
+func PadEnd(source string, size int, padStr string) string {
+	return padAtPosition(source, size, padStr, 2)
 }
 
 // KebabCase covert string to kebab-case
@@ -138,37 +127,45 @@ func UpperSnakeCase(s string) string {
 
 // Before create substring in source string before position when char first appear
 func Before(s, char string) string {
-	if s == "" || char == "" {
+	i := strings.Index(s, char)
+
+	if s == "" || char == "" || i == -1 {
 		return s
 	}
-	i := strings.Index(s, char)
+
 	return s[0:i]
 }
 
 // BeforeLast create substring in source string before position when char last appear
 func BeforeLast(s, char string) string {
-	if s == "" || char == "" {
+	i := strings.LastIndex(s, char)
+
+	if s == "" || char == "" || i == -1 {
 		return s
 	}
-	i := strings.LastIndex(s, char)
+
 	return s[0:i]
 }
 
 // After create substring in source string after position when char first appear
 func After(s, char string) string {
-	if s == "" || char == "" {
+	i := strings.Index(s, char)
+
+	if s == "" || char == "" || i == -1 {
 		return s
 	}
-	i := strings.Index(s, char)
+
 	return s[i+len(char):]
 }
 
 // AfterLast create substring in source string after position when char last appear
 func AfterLast(s, char string) string {
-	if s == "" || char == "" {
+	i := strings.LastIndex(s, char)
+
+	if s == "" || char == "" || i == -1 {
 		return s
 	}
-	i := strings.LastIndex(s, char)
+
 	return s[i+len(char):]
 }
 
@@ -273,3 +270,410 @@ func SplitEx(s, sep string, removeEmptyString bool) []string {
 
 	return ret
 }
+
+// SplitWords splits a string into words, word only contains alphabetic characters.
+func SplitWords(s string) []string {
+	var word string
+	var words []string
+	var r rune
+	var size, pos int
+
+	isWord := false
+
+	for len(s) > 0 {
+		r, size = utf8.DecodeRuneInString(s)
+
+		switch {
+		case isLetter(r):
+			if !isWord {
+				isWord = true
+				word = s
+				pos = 0
+			}
+
+		case isWord && (r == '\'' || r == '-'):
+			// is word
+
+		default:
+			if isWord {
+				isWord = false
+				words = append(words, word[:pos])
+			}
+		}
+
+		pos += size
+		s = s[size:]
+	}
+
+	if isWord {
+		words = append(words, word[:pos])
+	}
+
+	return words
+}
+
+// WordCount return the number of meaningful word, word only contains alphabetic characters.
+func WordCount(s string) int {
+	var r rune
+	var size, count int
+
+	isWord := false
+
+	for len(s) > 0 {
+		r, size = utf8.DecodeRuneInString(s)
+
+		switch {
+		case isLetter(r):
+			if !isWord {
+				isWord = true
+				count++
+			}
+
+		case isWord && (r == '\'' || r == '-'):
+			// is word
+
+		default:
+			isWord = false
+		}
+
+		s = s[size:]
+	}
+
+	return count
+}
+
+// RemoveNonPrintable remove non-printable characters from a string.
+func RemoveNonPrintable(str string) string {
+	result := strings.Map(func(r rune) rune {
+		if unicode.IsPrint(r) {
+			return r
+		}
+		return -1
+	}, str)
+
+	return result
+}
+
+// StringToBytes converts a string to byte slice without a memory allocation.
+func StringToBytes(str string) (b []byte) {
+	return *(*[]byte)(unsafe.Pointer(&str))
+}
+
+// BytesToString converts a byte slice to string without a memory allocation.
+func BytesToString(bytes []byte) string {
+	return *(*string)(unsafe.Pointer(&bytes))
+}
+
+// IsBlank checks if a string is whitespace, empty.
+func IsBlank(str string) bool {
+	if len(str) == 0 {
+		return true
+	}
+	// memory copies will occur here, but UTF8 will be compatible
+	runes := []rune(str)
+	for _, r := range runes {
+		if !unicode.IsSpace(r) {
+			return false
+		}
+	}
+	return true
+}
+
+// HasPrefixAny check if a string starts with any of an array of specified strings.
+func HasPrefixAny(str string, prefixes []string) bool {
+	if len(str) == 0 || len(prefixes) == 0 {
+		return false
+	}
+	for _, prefix := range prefixes {
+		if strings.HasPrefix(str, prefix) {
+			return true
+		}
+	}
+	return false
+}
+
+// HasSuffixAny check if a string ends with any of an array of specified strings.
+func HasSuffixAny(str string, suffixes []string) bool {
+	if len(str) == 0 || len(suffixes) == 0 {
+		return false
+	}
+	for _, suffix := range suffixes {
+		if strings.HasSuffix(str, suffix) {
+			return true
+		}
+	}
+	return false
+}
+
+// IndexOffset returns the index of the first instance of substr in string after offsetting the string by `idxFrom`,
+// or -1 if substr is not present in string.
+func IndexOffset(str string, substr string, idxFrom int) int {
+	if idxFrom > len(str)-1 || idxFrom < 0 {
+		return -1
+	}
+
+	return strings.Index(str[idxFrom:], substr) + idxFrom
+}
+
+// ReplaceWithMap returns a copy of `str`, which is replaced by a map in unordered way, case-sensitively.
+func ReplaceWithMap(str string, replaces map[string]string) string {
+	for k, v := range replaces {
+		str = strings.ReplaceAll(str, k, v)
+	}
+
+	return str
+}
+
+// SplitAndTrim splits string `str` by a string `delimiter` to a slice,
+// and calls Trim to every element of this slice. It ignores the elements
+// which are empty after Trim.
+func SplitAndTrim(str, delimiter string, characterMask ...string) []string {
+	result := make([]string, 0)
+
+	for _, v := range strings.Split(str, delimiter) {
+		v = Trim(v, characterMask...)
+		if v != "" {
+			result = append(result, v)
+		}
+	}
+
+	return result
+}
+
+var (
+	// DefaultTrimChars are the characters which are stripped by Trim* functions in default.
+	DefaultTrimChars = string([]byte{
+		'\t', // Tab.
+		'\v', // Vertical tab.
+		'\n', // New line (line feed).
+		'\r', // Carriage return.
+		'\f', // New page.
+		' ',  // Ordinary space.
+		0x00, // NUL-byte.
+		0x85, // Delete.
+		0xA0, // Non-breaking space.
+	})
+)
+
+// Trim strips whitespace (or other characters) from the beginning and end of a string.
+// The optional parameter `characterMask` specifies the additional stripped characters.
+func Trim(str string, characterMask ...string) string {
+	trimChars := DefaultTrimChars
+
+	if len(characterMask) > 0 {
+		trimChars += characterMask[0]
+	}
+
+	return strings.Trim(str, trimChars)
+}
+
+// HideString hide some chars in source string with param `replaceChar`.
+// replace range is origin[start : end]. [start, end)
+func HideString(origin string, start, end int, replaceChar string) string {
+	size := len(origin)
+
+	if start > size-1 || start < 0 || end < 0 || start > end {
+		return origin
+	}
+
+	if end > size {
+		end = size
+	}
+
+	if replaceChar == "" {
+		return origin
+	}
+
+	startStr := origin[0:start]
+	endStr := origin[end:size]
+
+	replaceSize := end - start
+	replaceStr := strings.Repeat(replaceChar, replaceSize)
+
+	return startStr + replaceStr + endStr
+}
+
+// ContainsAll return true if target string contains all the substrs.
+func ContainsAll(str string, substrs []string) bool {
+	for _, v := range substrs {
+		if !strings.Contains(str, v) {
+			return false
+		}
+	}
+
+	return true
+}
+
+// ContainsAny return true if target string contains any one of the substrs.
+func ContainsAny(str string, substrs []string) bool {
+	for _, v := range substrs {
+		if strings.Contains(str, v) {
+			return true
+		}
+	}
+
+	return false
+}
+
+var (
+	whitespaceRegexMatcher     *regexp.Regexp = regexp.MustCompile(`\s`)
+	mutiWhitespaceRegexMatcher *regexp.Regexp = regexp.MustCompile(`[[:space:]]{2,}|[\s\p{Zs}]{2,}`)
+)
+
+// RemoveWhiteSpace remove whitespace characters from a string.
+// when set repalceAll is true removes all whitespace, false only replaces consecutive whitespace characters with one space.
+func RemoveWhiteSpace(str string, repalceAll bool) string {
+	if repalceAll && str != "" {
+		return strings.Join(strings.Fields(str), "")
+	} else if str != "" {
+		str = mutiWhitespaceRegexMatcher.ReplaceAllString(str, " ")
+		str = whitespaceRegexMatcher.ReplaceAllString(str, " ")
+	}
+
+	return strings.TrimSpace(str)
+}
+
+// SubInBetween return substring between the start and end position(excluded) of source string.
+func SubInBetween(str string, start string, end string) string {
+	if _, after, ok := Cut(str, start); ok {
+		if before, _, ok := Cut(after, end); ok {
+			return before
+		}
+	}
+	return ""
+}
+
+// Cut splits the string at the first occurrence of separator.
+func Cut(str, sep string) (before, after string, found bool) {
+	if i := strings.Index(str, sep); i >= 0 {
+		return str[:i], str[i+len(sep):], true
+	}
+	return str, "", false
+}
+
+// HammingDistance calculates the Hamming distance between two strings.
+// The Hamming distance is the number of positions at which the corresponding symbols are different.
+// This func returns an error if the input strings are of unequal lengths.
+func HammingDistance(a, b string) (int, error) {
+	if len(a) != len(b) {
+		return -1, errors.New("a length and b length are unequal")
+	}
+
+	ar := []rune(a)
+	br := []rune(b)
+
+	var distance int
+	for i, codepoint := range ar {
+		if codepoint != br[i] {
+			distance++
+		}
+	}
+
+	return distance, nil
+}
+
+// Concat uses the strings.Builder to concatenate the input strings.
+//   - `length` is the expected length of the concatenated string.
+//   - if you are unsure about the length of the string to be concatenated, please pass 0 or a negative number.
+func Concat(length int, str ...string) string {
+	if len(str) == 0 {
+		return ""
+	}
+
+	sb := strings.Builder{}
+	if length <= 0 {
+		sb.Grow(len(str[0]) * len(str))
+	} else {
+		sb.Grow(length)
+	}
+
+	for _, s := range str {
+		sb.WriteString(s)
+	}
+	return sb.String()
+}
+
+// Ellipsis truncates a string to a specified length and appends an ellipsis.
+func Ellipsis(str string, length int) string {
+	str = strings.TrimSpace(str)
+
+	if length <= 0 {
+		return ""
+	}
+
+	runes := []rune(str)
+
+	if len(runes) <= length {
+		return str
+	}
+
+	return string(runes[:length]) + "..."
+}
+
+// Shuffle the order of characters of given string.
+func Shuffle(str string) string {
+	runes := []rune(str)
+
+	for i := len(runes) - 1; i > 0; i-- {
+		j := rng.Intn(i + 1)
+		runes[i], runes[j] = runes[j], runes[i]
+	}
+
+	return string(runes)
+}
+
+// Rotate rotates the string by the specified number of characters.
+func Rotate(str string, shift int) string {
+	if shift == 0 {
+		return str
+	}
+
+	runes := []rune(str)
+	length := len(runes)
+	if length == 0 {
+		return str
+	}
+
+	shift = shift % length
+
+	if shift < 0 {
+		shift = length + shift
+	}
+
+	var sb strings.Builder
+	sb.Grow(length)
+
+	sb.WriteString(string(runes[length-shift:]))
+	sb.WriteString(string(runes[:length-shift]))
+
+	return sb.String()
+}
+
+// TemplateReplace replaces the placeholders in the template string with the corresponding values in the data map.
+// The placeholders are enclosed in curly braces, e.g. {key}.
+// for example, the template string is "Hello, {name}!", and the data map is {"name": "world"},
+// the result will be "Hello, world!".
+func TemplateReplace(template string, data map[string]string) string {
+	re := regexp.MustCompile(`\{(\w+)\}`)
+
+	result := re.ReplaceAllStringFunc(template, func(s string) string {
+		key := strings.Trim(s, "{}")
+		if val, ok := data[key]; ok {
+			return val
+		}
+
+		return s
+	})
+
+	result = strings.ReplaceAll(result, "{{", "{")
+	result = strings.ReplaceAll(result, "}}", "}")
+
+	return result
+}
+
+// RegexMatchAllGroups Matches all subgroups in a string using a regular expression and returns the result.
+func RegexMatchAllGroups(pattern, str string) [][]string {
+	re := regexp.MustCompile(pattern)
+	matches := re.FindAllStringSubmatch(str, -1)
+	return matches
+}

strutil/string_internal.go

@@ -96,3 +96,72 @@ func toUpperAll(rs []rune) []rune {
 	}
 	return rs
 }
+
+func padAtPosition(str string, length int, padStr string, position int) string {
+	if len(str) >= length {
+		return str
+	}
+
+	if padStr == "" {
+		padStr = " "
+	}
+
+	length = length - len(str)
+	startPadLen := 0
+	if position == 0 {
+		startPadLen = length / 2
+	} else if position == 1 {
+		startPadLen = length
+	}
+	endPadLen := length - startPadLen
+
+	charLen := len(padStr)
+	leftPad := ""
+	cur := 0
+	for cur < startPadLen {
+		leftPad += string(padStr[cur%charLen])
+		cur++
+	}
+
+	cur = 0
+	rightPad := ""
+	for cur < endPadLen {
+		rightPad += string(padStr[cur%charLen])
+		cur++
+	}
+
+	return leftPad + str + rightPad
+}
+
+// isLetter checks r is a letter but not CJK character.
+func isLetter(r rune) bool {
+	if !unicode.IsLetter(r) {
+		return false
+	}
+
+	switch {
+	// cjk char: /[\u3040-\u30ff\u3400-\u4dbf\u4e00-\u9fff\uf900-\ufaff\uff66-\uff9f]/
+
+	// hiragana and katakana (Japanese only)
+	case r >= '\u3034' && r < '\u30ff':
+		return false
+
+	// CJK unified ideographs extension A (Chinese, Japanese, and Korean)
+	case r >= '\u3400' && r < '\u4dbf':
+		return false
+
+	// CJK unified ideographs (Chinese, Japanese, and Korean)
+	case r >= '\u4e00' && r < '\u9fff':
+		return false
+
+	// CJK compatibility ideographs (Chinese, Japanese, and Korean)
+	case r >= '\uf900' && r < '\ufaff':
+		return false
+
+	// half-width katakana (Japanese only)
+	case r >= '\uff66' && r < '\uff9f':
+		return false
+	}
+
+	return true
+}

strutil/string_test.go

@@ -1,6 +1,7 @@
 package strutil
 
 import (
+	"reflect"
 	"testing"
 
 	"github.com/duke-git/lancet/internal"
@@ -168,9 +169,19 @@ func TestLowerFirst(t *testing.T) {
 	}
 }
 
+func TestPad(t *testing.T) {
+	assert := internal.NewAssert(t, "TestPad")
+
+	assert.Equal("a ", Pad("a", 2, ""))
+	assert.Equal("a", Pad("a", 1, "b"))
+	assert.Equal("ab", Pad("a", 2, "b"))
+	assert.Equal("mabcdm", Pad("abcd", 6, "m"))
+}
+
 func TestPadEnd(t *testing.T) {
 	assert := internal.NewAssert(t, "TestPadEnd")
 
+	assert.Equal("a ", PadEnd("a", 2, " "))
 	assert.Equal("a", PadEnd("a", 1, "b"))
 	assert.Equal("ab", PadEnd("a", 2, "b"))
 	assert.Equal("abcdmn", PadEnd("abcd", 6, "mno"))
@@ -196,6 +207,7 @@ func TestBefore(t *testing.T) {
 	assert := internal.NewAssert(t, "TestBefore")
 
 	assert.Equal("lancet", Before("lancet", ""))
+	assert.Equal("lancet", Before("lancet", "abcdef"))
 	assert.Equal("github.com", Before("github.com/test/lancet", "/"))
 	assert.Equal("github.com/", Before("github.com/test/lancet", "test"))
 }
@@ -204,16 +216,42 @@ func TestBeforeLast(t *testing.T) {
 	assert := internal.NewAssert(t, "TestBeforeLast")
 
 	assert.Equal("lancet", BeforeLast("lancet", ""))
+
+	assert.Equal("lancet", BeforeLast("lancet", "abcdef"))
 	assert.Equal("github.com/test", BeforeLast("github.com/test/lancet", "/"))
 	assert.Equal("github.com/test/", BeforeLast("github.com/test/test/lancet", "test"))
 
 	assert.NotEqual("github.com/", BeforeLast("github.com/test/test/lancet", "test"))
 }
 
+func TestHammingDistance(t *testing.T) {
+	assert := internal.NewAssert(t, "HammingDistance")
+
+	hd := func(a, b string) int {
+		c, _ := HammingDistance(a, b)
+		return c
+	}
+
+	assert.Equal(0, hd(" ", " "))
+	assert.Equal(1, hd(" ", "c"))
+	assert.Equal(1, hd("a", "d"))
+	assert.Equal(1, hd("a", " "))
+	assert.Equal(1, hd("a", "f"))
+
+	assert.Equal(0, hd("", ""))
+	assert.Equal(-1, hd("abc", "ab"))
+	assert.Equal(3, hd("abc", "def"))
+	assert.Equal(-1, hd("kitten", "sitting"))
+	assert.Equal(1, hd("ö", "ü"))
+	assert.Equal(0, hd("日本語", "日本語"))
+	assert.Equal(3, hd("日本語", "語日本"))
+}
+
 func TestAfter(t *testing.T) {
 	assert := internal.NewAssert(t, "TestAfter")
 
 	assert.Equal("lancet", After("lancet", ""))
+	assert.Equal("lancet", After("lancet", "abcdef"))
 	assert.Equal("test/lancet", After("github.com/test/lancet", "/"))
 	assert.Equal("/lancet", After("github.com/test/lancet", "test"))
 }
@@ -222,6 +260,7 @@ func TestAfterLast(t *testing.T) {
 	assert := internal.NewAssert(t, "TestAfterLast")
 
 	assert.Equal("lancet", AfterLast("lancet", ""))
+	assert.Equal("lancet", AfterLast("lancet", "abcdef"))
 	assert.Equal("lancet", AfterLast("github.com/test/lancet", "/"))
 	assert.Equal("/lancet", AfterLast("github.com/test/lancet", "test"))
 	assert.Equal("/lancet", AfterLast("github.com/test/test/lancet", "test"))
@@ -285,3 +324,421 @@ func TestSplitEx(t *testing.T) {
 	assert.Equal([]string{" a", "b", "c", ""}, SplitEx(" a = b = c = ", " = ", false))
 	assert.Equal([]string{" a", "b", "c"}, SplitEx(" a = b = c = ", " = ", true))
 }
+
+func TestSplitWords(t *testing.T) {
+	assert := internal.NewAssert(t, "TestSplitWords")
+
+	cases := map[string][]string{
+		"a word":                       {"a", "word"},
+		"I'am a programmer":            {"I'am", "a", "programmer"},
+		"Bonjour, je suis programmeur": {"Bonjour", "je", "suis", "programmeur"},
+		"a -b-c' 'd'e":                 {"a", "b-c'", "d'e"},
+		"你好，我是一名码农":                    nil,
+		"こんにちは，私はプログラマーです": nil,
+	}
+
+	for k, v := range cases {
+		assert.Equal(v, SplitWords(k))
+	}
+}
+
+func TestWordCount(t *testing.T) {
+	assert := internal.NewAssert(t, "TestSplitWords")
+
+	cases := map[string]int{
+		"a word":                       2, //   {"a", "word"},
+		"I'am a programmer":            3, //   {"I'am", "a", "programmer"},
+		"Bonjour, je suis programmeur": 4, // {"Bonjour", "je", "suis", "programmeur"},
+		"a -b-c' 'd'e":                 3, // {"a", "b-c'", "d'e"},
+		"你好，我是一名码农":                    0, // nil,
+		"こんにちは，私はプログラマーです": 0, // nil,
+	}
+
+	for k, v := range cases {
+		assert.Equal(v, WordCount(k))
+	}
+}
+
+func TestRemoveNonPrintable(t *testing.T) {
+	assert := internal.NewAssert(t, "TestRemoveNonPrintable")
+
+	assert.Equal("hello world", RemoveNonPrintable("hello\u00a0 \u200bworld\n"))
+	assert.Equal("你好😄", RemoveNonPrintable("你好😄"))
+}
+
+func TestStringToBytes(t *testing.T) {
+	assert := internal.NewAssert(t, "TestStringToBytes")
+	str := "abc"
+	bytes := StringToBytes(str)
+	assert.Equal(reflect.DeepEqual(bytes, []byte{'a', 'b', 'c'}), true)
+}
+
+func TestBytesToString(t *testing.T) {
+	assert := internal.NewAssert(t, "TestBytesToString")
+	bytes := []byte{'a', 'b', 'c'}
+	str := BytesToString(bytes)
+	assert.Equal(str == "abc", true)
+}
+
+func TestIsBlank(t *testing.T) {
+	assert := internal.NewAssert(t, "TestIsBlank")
+	assert.Equal(IsBlank(""), true)
+	assert.Equal(IsBlank("\t\v\f\n"), true)
+	assert.Equal(IsBlank(" 中文"), false)
+}
+
+func TestHasPrefixAny(t *testing.T) {
+	assert := internal.NewAssert(t, "TestHasPrefixAny")
+	str := "foo bar"
+	prefixes := []string{"fo", "xyz", "hello"}
+	notMatches := []string{"oom", "world"}
+	assert.Equal(HasPrefixAny(str, prefixes), true)
+	assert.Equal(HasPrefixAny(str, notMatches), false)
+}
+
+func TestHasSuffixAny(t *testing.T) {
+	assert := internal.NewAssert(t, "TestHasSuffixAny")
+	str := "foo bar"
+	suffixes := []string{"bar", "xyz", "hello"}
+	notMatches := []string{"oom", "world"}
+	assert.Equal(HasSuffixAny(str, suffixes), true)
+	assert.Equal(HasSuffixAny(str, notMatches), false)
+}
+
+func TestIndexOffset(t *testing.T) {
+	assert := internal.NewAssert(t, "TestIndexOffset")
+	str := "foo bar hello world"
+	assert.Equal(IndexOffset(str, "o", 5), 12)
+	assert.Equal(IndexOffset(str, "o", 0), 1)
+	assert.Equal(IndexOffset(str, "d", len(str)-1), len(str)-1)
+	assert.Equal(IndexOffset(str, "d", len(str)), -1)
+	assert.Equal(IndexOffset(str, "f", -1), -1)
+}
+
+func TestReplaceWithMap(t *testing.T) {
+	assert := internal.NewAssert(t, "TestReplaceWithMap")
+
+	str := "ac ab ab ac"
+	replaces := map[string]string{
+		"a": "1",
+		"b": "2",
+	}
+
+	assert.Equal(str, "ac ab ab ac")
+	assert.Equal(ReplaceWithMap(str, replaces), "1c 12 12 1c")
+}
+
+func TestTrim(t *testing.T) {
+	assert := internal.NewAssert(t, "TestTrim")
+
+	str1 := "$ ab	cd $ "
+
+	assert.Equal("$ ab	cd $", Trim(str1))
+	assert.Equal("ab	cd", Trim(str1, "$"))
+	assert.Equal("abcd", Trim("\nabcd"))
+}
+
+func TestSplitAndTrim(t *testing.T) {
+	assert := internal.NewAssert(t, "TestTrim")
+
+	str := " a,b, c,d,$1 "
+
+	result1 := SplitAndTrim(str, ",")
+	result2 := SplitAndTrim(str, ",", "$")
+
+	assert.Equal([]string{"a", "b", "c", "d", "$1"}, result1)
+	assert.Equal([]string{"a", "b", "c", "d", "1"}, result2)
+}
+
+func TestHideString(t *testing.T) {
+	assert := internal.NewAssert(t, "TestTrim")
+
+	str := "13242658976"
+
+	assert.Equal("13242658976", HideString(str, 0, -1, "*"))
+	assert.Equal("13242658976", HideString(str, 0, 0, "*"))
+	assert.Equal("****2658976", HideString(str, 0, 4, "*"))
+
+	assert.Equal("13242658976", HideString(str, 3, 3, "*"))
+	assert.Equal("132*2658976", HideString(str, 3, 4, "*"))
+	assert.Equal("132****8976", HideString(str, 3, 7, "*"))
+	assert.Equal("1324265****", HideString(str, 7, 11, "*"))
+
+	assert.Equal("1324265****", HideString(str, 7, 100, "*"))
+	assert.Equal("13242658976", HideString(str, 100, 100, "*"))
+}
+
+func TestContainsAll(t *testing.T) {
+	assert := internal.NewAssert(t, "TestContainsAll")
+
+	assert.Equal(true, ContainsAll("hello world", []string{"hello", "world"}))
+	assert.Equal(true, ContainsAll("hello world", []string{""}))
+	assert.Equal(false, ContainsAll("hello world", []string{"hello", "abc"}))
+}
+
+func TestContainsAny(t *testing.T) {
+	assert := internal.NewAssert(t, "TestContainsAny")
+
+	assert.Equal(true, ContainsAny("hello world", []string{"hello", "world"}))
+	assert.Equal(true, ContainsAny("hello world", []string{"hello", "abc"}))
+	assert.Equal(false, ContainsAny("hello world", []string{"123", "abc"}))
+}
+
+func TestRemoveWhiteSpace(t *testing.T) {
+	assert := internal.NewAssert(t, "TestRemoveWhiteSpace")
+
+	str := " hello   \r\n	\t   world"
+
+	assert.Equal("", RemoveWhiteSpace("", true))
+	assert.Equal("helloworld", RemoveWhiteSpace(str, true))
+	assert.Equal("hello world", RemoveWhiteSpace(str, false))
+}
+
+func TestSubInBetween(t *testing.T) {
+	assert := internal.NewAssert(t, "TestSubInBetween")
+
+	str := "abcde"
+
+	assert.Equal("", SubInBetween(str, "", ""))
+	assert.Equal("ab", SubInBetween(str, "", "c"))
+	assert.Equal("bc", SubInBetween(str, "a", "d"))
+	assert.Equal("", SubInBetween(str, "a", ""))
+	assert.Equal("", SubInBetween(str, "a", "f"))
+}
+
+func TestConcat(t *testing.T) {
+	t.Parallel()
+
+	assert := internal.NewAssert(t, "TestConcat")
+
+	assert.Equal("", Concat(0))
+	assert.Equal("a", Concat(1, "a"))
+	assert.Equal("ab", Concat(2, "a", "b"))
+	assert.Equal("abc", Concat(3, "a", "b", "c"))
+	assert.Equal("abc", Concat(3, "a", "", "b", "c", ""))
+	assert.Equal("你好，世界！", Concat(0, "你好", "，", "", "世界！", ""))
+	assert.Equal("Hello World!", Concat(0, "Hello", " Wo", "r", "ld!", ""))
+}
+
+func TestEllipsis(t *testing.T) {
+	t.Parallel()
+	assert := internal.NewAssert(t, "TestEllipsis")
+
+	tests := []struct {
+		input    string
+		length   int
+		expected string
+	}{
+		{"", 0, ""},
+		{"hello world", 0, ""},
+		{"hello world", -1, ""},
+		{"hello world", 5, "hello..."},
+		{"hello world", 11, "hello world"},
+		{"你好，世界!", 2, "你好..."},
+		{"😀😃😄😁😆", 3, "😀😃😄..."},
+		{"This is a test.", 10, "This is a ..."},
+	}
+
+	for _, tt := range tests {
+		assert.Equal(tt.expected, Ellipsis(tt.input, tt.length))
+	}
+}
+
+func TestShuffle(t *testing.T) {
+	t.Parallel()
+
+	assert := internal.NewAssert(t, "TestShuffle")
+
+	assert.Equal("", Shuffle(""))
+	assert.Equal("a", Shuffle("a"))
+
+	str := "hello"
+	shuffledStr := Shuffle(str)
+	assert.Equal(5, len(shuffledStr))
+}
+
+func TestRotate(t *testing.T) {
+	t.Parallel()
+
+	assert := internal.NewAssert(t, "TestRotate")
+
+	tests := []struct {
+		input    string
+		shift    int
+		expected string
+	}{
+		{"", 1, ""},
+		{"a", 0, "a"},
+		{"a", 1, "a"},
+		{"a", -1, "a"},
+
+		{"Hello", -2, "lloHe"},
+		{"Hello", 1, "oHell"},
+		{"Hello, world!", 3, "ld!Hello, wor"},
+	}
+
+	for _, tt := range tests {
+		assert.Equal(tt.expected, Rotate(tt.input, tt.shift))
+	}
+}
+
+func TestTemplateReplace(t *testing.T) {
+	t.Parallel()
+
+	assert := internal.NewAssert(t, "TestTemplateReplace")
+
+	t.Run("basic", func(t *testing.T) {
+		template := `Hello, my name is {name}, I'm {age} years old.`
+		data := map[string]string{
+			"name": "Bob",
+			"age":  "20",
+		}
+
+		expected := `Hello, my name is Bob, I'm 20 years old.`
+		result := TemplateReplace(template, data)
+
+		assert.Equal(expected, result)
+	})
+
+	t.Run("not found", func(t *testing.T) {
+		template := `Hello, my name is {name}, I'm {age} years old.`
+		data := map[string]string{
+			"name": "Bob",
+		}
+
+		expected := `Hello, my name is Bob, I'm {age} years old.`
+		result := TemplateReplace(template, data)
+
+		assert.Equal(expected, result)
+	})
+
+	t.Run("brackets", func(t *testing.T) {
+		template := `Hello, my name is {name}, I'm {{age}} years old.`
+		data := map[string]string{
+			"name": "Bob",
+			"age":  "20",
+		}
+
+		expected := `Hello, my name is Bob, I'm {20} years old.`
+		result := TemplateReplace(template, data)
+
+		assert.Equal(expected, result)
+	})
+}
+
+func TestRegexMatchAllGroups(t *testing.T) {
+	t.Parallel()
+
+	assert := internal.NewAssert(t, "TestRegexMatchAllGroups")
+
+	tests := []struct {
+		pattern  string
+		str      string
+		expected [][]string
+	}{
+		{
+			pattern:  `(\w+\.+\w+)@(\w+)\.(\w+)`,
+			str:      "Emails: john.doe@example.com and jane.doe@example.com",
+			expected: [][]string{{"john.doe@example.com", "john.doe", "example", "com"}, {"jane.doe@example.com", "jane.doe", "example", "com"}},
+		},
+		{
+			pattern:  `(\d+)`,
+			str:      "No numbers here!",
+			expected: nil,
+		},
+		{
+			pattern:  `(\d{3})-(\d{2})-(\d{4})`,
+			str:      "My number is 123-45-6789",
+			expected: [][]string{{"123-45-6789", "123", "45", "6789"}},
+		},
+		{
+			pattern:  `(\w+)\s(\d+)`,
+			str:      "Item A 123, Item B 456",
+			expected: [][]string{{"A 123", "A", "123"}, {"B 456", "B", "456"}},
+		},
+		{
+			pattern:  `(\d{2})-(\d{2})-(\d{4})`,
+			str:      "Dates: 01-01-2020, 12-31-1999",
+			expected: [][]string{{"01-01-2020", "01", "01", "2020"}, {"12-31-1999", "12", "31", "1999"}},
+		},
+	}
+
+	for _, tt := range tests {
+		result := RegexMatchAllGroups(tt.pattern, tt.str)
+		assert.Equal(tt.expected, result)
+	}
+}
+
+func TestCut(t *testing.T) {
+	t.Parallel()
+
+	assert := internal.NewAssert(t, "TestCut")
+
+	tests := []struct {
+		name   string
+		s      string
+		sep    string
+		before string
+		after  string
+		found  bool
+	}{
+		{
+			name:   "test with separator",
+			s:      "hello-world",
+			sep:    "-",
+			before: "hello",
+			after:  "world",
+			found:  true,
+		},
+		{
+			name:   "test without separator",
+			s:      "helloworld",
+			sep:    "-",
+			before: "helloworld",
+			after:  "",
+			found:  false,
+		},
+		{
+			name:   "test empty string",
+			s:      "",
+			sep:    "-",
+			before: "",
+			after:  "",
+			found:  false,
+		},
+		{
+			name:   "test separator at the beginning",
+			s:      "-hello",
+			sep:    "-",
+			before: "",
+			after:  "hello",
+			found:  true,
+		},
+		{
+			name:   "test separator at the end",
+			s:      "hello-",
+			sep:    "-",
+			before: "hello",
+			after:  "",
+			found:  true,
+		},
+		{
+			name:   "test multiple separators",
+			s:      "a-b-c-d",
+			sep:    "-",
+			before: "a",
+			after:  "b-c-d",
+			found:  true,
+		},
+	}
+
+	for _, tt := range tests {
+		t.Run(tt.name, func(t *testing.T) {
+			before, after, found := Cut(tt.s, tt.sep)
+			assert.Equal(tt.before, before)
+			assert.Equal(tt.after, after)
+			assert.Equal(tt.found, found)
+		})
+	}
+
+}

system/os.go

@@ -15,6 +15,10 @@ import (
 	"golang.org/x/text/encoding/simplifiedchinese"
 )
 
+type (
+	Option func(*exec.Cmd)
+)
+
 // IsWindows check if current os is windows
 func IsWindows() bool {
 	return runtime.GOOS == "windows"
@@ -58,7 +62,7 @@ func CompareOsEnv(key, comparedEnv string) bool {
 // param `command` is a complete command string, like, ls -a (linux), dir(windows), ping 127.0.0.1
 // in linux,  use /bin/bash -c to execute command
 // in windows, use powershell.exe to execute command
-func ExecCommand(command string) (stdout, stderr string, err error) {
+func ExecCommand(command string, opts ...Option) (stdout, stderr string, err error) {
 	var out bytes.Buffer
 	var errOut bytes.Buffer
 
@@ -66,6 +70,13 @@ func ExecCommand(command string) (stdout, stderr string, err error) {
 	if IsWindows() {
 		cmd = exec.Command("powershell.exe", command)
 	}
+
+	for _, opt := range opts {
+		if opt != nil {
+			opt(cmd)
+		}
+	}
+
 	cmd.Stdout = &out
 	cmd.Stderr = &errOut
 

system/os_darwin.go

@@ -0,0 +1,25 @@
+//go:build darwin
+
+package system
+
+import (
+	"os/exec"
+)
+
+func WithForeground() Option {
+	return func(c *exec.Cmd) {
+		// if c.SysProcAttr == nil {
+		// 	c.SysProcAttr = &syscall.SysProcAttr{
+		// 		Foreground: true,
+		// 	}
+		// } else {
+		// 	c.SysProcAttr.Foreground = true
+		// }
+	}
+}
+
+func WithWinHide() Option {
+	return func(c *exec.Cmd) {
+
+	}
+}

system/os_linux.go

@@ -0,0 +1,26 @@
+//go:build linux
+
+package system
+
+import (
+	"os/exec"
+	"syscall"
+)
+
+func WithForeground() Option {
+	return func(c *exec.Cmd) {
+		if c.SysProcAttr == nil {
+			c.SysProcAttr = &syscall.SysProcAttr{
+				Foreground: true,
+			}
+		} else {
+			c.SysProcAttr.Foreground = true
+		}
+	}
+}
+
+func WithWinHide() Option {
+	return func(c *exec.Cmd) {
+
+	}
+}

system/os_windows.go

@@ -0,0 +1,21 @@
+//go:build windows
+// +build windows
+
+package system
+
+import (
+	"os/exec"
+	"syscall"
+)
+
+func WithWinHide() Option {
+	return func(c *exec.Cmd) {
+		if c.SysProcAttr == nil {
+			c.SysProcAttr = &syscall.SysProcAttr{
+				HideWindow: true,
+			}
+		} else {
+			c.SysProcAttr.HideWindow = true
+		}
+	}
+}

validator/validator.go

@@ -16,18 +16,26 @@ import (
 )
 
 var (
-	alphaMatcher         *regexp.Regexp = regexp.MustCompile(`^[a-zA-Z]+$`)
-	letterRegexMatcher   *regexp.Regexp = regexp.MustCompile(`[a-zA-Z]`)
-	intStrMatcher        *regexp.Regexp = regexp.MustCompile(`^[\+-]?\d+$`)
-	urlMatcher           *regexp.Regexp = regexp.MustCompile(`^((ftp|http|https?):\/\/)?(\S+(:\S*)?@)?((([1-9]\d?|1\d\d|2[01]\d|22[0-3])(\.(1?\d{1,2}|2[0-4]\d|25[0-5])){2}(?:\.([0-9]\d?|1\d\d|2[0-4]\d|25[0-4]))|(([a-zA-Z0-9]+([-\.][a-zA-Z0-9]+)*)|((www\.)?))?(([a-z\x{00a1}-\x{ffff}0-9]+-?-?)*[a-z\x{00a1}-\x{ffff}0-9]+)(?:\.([a-z\x{00a1}-\x{ffff}]{2,}))?))(:(\d{1,5}))?((\/|\?|#)[^\s]*)?$`)
-	dnsMatcher           *regexp.Regexp = regexp.MustCompile(`^[a-zA-Z]([a-zA-Z0-9\-]+[\.]?)*[a-zA-Z0-9]$`)
-	emailMatcher         *regexp.Regexp = regexp.MustCompile(`\w+([-+.]\w+)*@\w+([-.]\w+)*\.\w+([-.]\w+)*`)
-	chineseMobileMatcher *regexp.Regexp = regexp.MustCompile(`^1(?:3\d|4[4-9]|5[0-35-9]|6[67]|7[013-8]|8\d|9\d)\d{8}$`)
-	chineseIdMatcher     *regexp.Regexp = regexp.MustCompile(`^[1-9]\d{5}(18|19|20|21|22)\d{2}((0[1-9])|(1[0-2]))(([0-2][1-9])|10|20|30|31)\d{3}[0-9Xx]$`)
-	chineseMatcher       *regexp.Regexp = regexp.MustCompile("[\u4e00-\u9fa5]")
-	chinesePhoneMatcher  *regexp.Regexp = regexp.MustCompile(`\d{3}-\d{8}|\d{4}-\d{7}`)
-	creditCardMatcher    *regexp.Regexp = regexp.MustCompile(`^(?:4[0-9]{12}(?:[0-9]{3})?|5[1-5][0-9]{14}|(222[1-9]|22[3-9][0-9]|2[3-6][0-9]{2}|27[01][0-9]|2720)[0-9]{12}|6(?:011|5[0-9][0-9])[0-9]{12}|3[47][0-9]{13}|3(?:0[0-5]|[68][0-9])[0-9]{11}|(?:2131|1800|35\\d{3})\\d{11}|6[27][0-9]{14})$`)
-	base64Matcher        *regexp.Regexp = regexp.MustCompile(`^(?:[A-Za-z0-9+\\/]{4})*(?:[A-Za-z0-9+\\/]{2}==|[A-Za-z0-9+\\/]{3}=|[A-Za-z0-9+\\/]{4})$`)
+	alphaMatcher           *regexp.Regexp = regexp.MustCompile(`^[a-zA-Z]+$`)
+	letterRegexMatcher     *regexp.Regexp = regexp.MustCompile(`[a-zA-Z]`)
+	intStrMatcher          *regexp.Regexp = regexp.MustCompile(`^[\+-]?\d+$`)
+	urlMatcher             *regexp.Regexp = regexp.MustCompile(`^((ftp|http|https?):\/\/)?(\S+(:\S*)?@)?((([1-9]\d?|1\d\d|2[01]\d|22[0-3])(\.(1?\d{1,2}|2[0-4]\d|25[0-5])){2}(?:\.([0-9]\d?|1\d\d|2[0-4]\d|25[0-4]))|(([a-zA-Z0-9]+([-\.][a-zA-Z0-9]+)*)|((www\.)?))?(([a-z\x{00a1}-\x{ffff}0-9]+-?-?)*[a-z\x{00a1}-\x{ffff}0-9]+)(?:\.([a-z\x{00a1}-\x{ffff}]{2,}))?))(:(\d{1,5}))?((\/|\?|#)[^\s]*)?$`)
+	dnsMatcher             *regexp.Regexp = regexp.MustCompile(`^[a-zA-Z]([a-zA-Z0-9\-]+[\.]?)*[a-zA-Z0-9]$`)
+	emailMatcher           *regexp.Regexp = regexp.MustCompile(`\w+([-+.]\w+)*@\w+([-.]\w+)*\.\w+([-.]\w+)*`)
+	chineseMobileMatcher   *regexp.Regexp = regexp.MustCompile(`^1(?:3\d|4[4-9]|5[0-35-9]|6[67]|7[013-8]|8\d|9\d)\d{8}$`)
+	chineseIdMatcher       *regexp.Regexp = regexp.MustCompile(`^[1-9]\d{5}(18|19|20|21|22)\d{2}((0[1-9])|(1[0-2]))(([0-2][1-9])|10|20|30|31)\d{3}[0-9Xx]$`)
+	chineseMatcher         *regexp.Regexp = regexp.MustCompile("[\u4e00-\u9fa5]")
+	chinesePhoneMatcher    *regexp.Regexp = regexp.MustCompile(`\d{3}-\d{8}|\d{4}-\d{7}`)
+	creditCardMatcher      *regexp.Regexp = regexp.MustCompile(`^(?:4[0-9]{12}(?:[0-9]{3})?|5[1-5][0-9]{14}|(222[1-9]|22[3-9][0-9]|2[3-6][0-9]{2}|27[01][0-9]|2720)[0-9]{12}|6(?:011|5[0-9][0-9])[0-9]{12}|3[47][0-9]{13}|3(?:0[0-5]|[68][0-9])[0-9]{11}|(?:2131|1800|35\\d{3})\\d{11}|6[27][0-9]{14})$`)
+	base64Matcher          *regexp.Regexp = regexp.MustCompile(`^(?:[A-Za-z0-9+\\/]{4})*(?:[A-Za-z0-9+\\/]{2}==|[A-Za-z0-9+\\/]{3}=|[A-Za-z0-9+\\/]{4})$`)
+	base64URLMatcher       *regexp.Regexp = regexp.MustCompile(`^([A-Za-z0-9_-]{4})*([A-Za-z0-9_-]{2}(==)?|[A-Za-z0-9_-]{3}=?)?$`)
+	binMatcher             *regexp.Regexp = regexp.MustCompile(`^(0b)?[01]+$`)
+	hexMatcher             *regexp.Regexp = regexp.MustCompile(`^(#|0x|0X)?[0-9a-fA-F]+$`)
+	visaMatcher            *regexp.Regexp = regexp.MustCompile(`^4[0-9]{12}(?:[0-9]{3})?$`)
+	masterCardMatcher      *regexp.Regexp = regexp.MustCompile(`^5[1-5][0-9]{14}$`)
+	americanExpressMatcher *regexp.Regexp = regexp.MustCompile(`^3[47][0-9]{13}$`)
+	unionPay               *regexp.Regexp = regexp.MustCompile("^62[0-5]\\d{13,16}$")
+	chinaUnionPay          *regexp.Regexp = regexp.MustCompile(`^62[0-9]{14,17}$`)
 )
 
 // IsAlpha checks if the string contains only letters (a-zA-Z)
@@ -316,3 +324,105 @@ func IsGBK(data []byte) bool {
 
 	return true
 }
+
+// IsNumberStr check if the value is number(integer, float) or not.
+func IsNumber(v interface{}) bool {
+	return IsInt(v) || IsFloat(v)
+}
+
+// IsFloat check if the value is float(float32, float34) or not.
+func IsFloat(v interface{}) bool {
+	switch v.(type) {
+	case float32, float64:
+		return true
+	}
+	return false
+}
+
+// IsInt check if the value is integer(int, unit) or not.
+func IsInt(v interface{}) bool {
+	switch v.(type) {
+	case int, int8, int16, int32, int64, uint, uint8, uint16, uint32, uint64, uintptr:
+		return true
+	}
+	return false
+}
+
+// IsASCII checks if string is all ASCII char.
+func IsASCII(str string) bool {
+	for i := 0; i < len(str); i++ {
+		if str[i] > unicode.MaxASCII {
+			return false
+		}
+	}
+	return true
+}
+
+// IsPrintable checks if string is all printable chars.
+func IsPrintable(str string) bool {
+	for _, r := range str {
+		if !unicode.IsPrint(r) {
+			if r == '\n' || r == '\r' || r == '\t' || r == '`' {
+				continue
+			}
+			return false
+		}
+	}
+	return true
+}
+
+// IsBin check if a give string is a valid binary value or not.
+func IsBin(v string) bool {
+	return binMatcher.MatchString(v)
+}
+
+// IsHex check if a give string is a valid hexadecimal value or not.
+func IsHex(v string) bool {
+	return hexMatcher.MatchString(v)
+}
+
+// IsBase64URL check if a give string is a valid URL-safe Base64 encoded string.
+func IsBase64URL(v string) bool {
+	return base64URLMatcher.MatchString(v)
+}
+
+// IsJWT check if a give string is a valid JSON Web Token (JWT).
+func IsJWT(v string) bool {
+	strings := strings.Split(v, ".")
+	if len(strings) != 3 {
+		return false
+	}
+
+	for _, s := range strings {
+		if !IsBase64URL(s) {
+			return false
+		}
+	}
+
+	return true
+}
+
+// IsVisa check if a give string is a valid visa card nubmer or not.
+func IsVisa(v string) bool {
+	return visaMatcher.MatchString(v)
+}
+
+// IsMasterCard check if a give string is a valid master card nubmer or not.
+func IsMasterCard(v string) bool {
+	return masterCardMatcher.MatchString(v)
+}
+
+// IsAmericanExpress check if a give string is a valid american expression card nubmer or not.
+func IsAmericanExpress(v string) bool {
+	return americanExpressMatcher.MatchString(v)
+}
+
+// IsUnionPay check if a give string is a valid union pay nubmer or not.
+func IsUnionPay(v string) bool {
+	return unionPay.MatchString(v)
+}
+
+// IsChinaUnionPay check if a give string is a valid china union pay nubmer or not.
+func IsChinaUnionPay(v string) bool {
+	return chinaUnionPay.MatchString(v)
+}

validator/validator_test.go

@@ -400,3 +400,138 @@ func TestIsGBK(t *testing.T) {
 	assert.Equal(true, IsGBK(gbkData))
 	assert.Equal(false, utf8.Valid(gbkData))
 }
+
+func TestIsNumber(t *testing.T) {
+	assert := internal.NewAssert(t, "TestIsNumber")
+
+	assert.Equal(false, IsNumber(""))
+	assert.Equal(false, IsNumber("3"))
+	assert.Equal(true, IsNumber(0))
+	assert.Equal(true, IsNumber(0.1))
+}
+
+func TestIsFloat(t *testing.T) {
+	assert := internal.NewAssert(t, "TestIsFloat")
+
+	assert.Equal(false, IsFloat(""))
+	assert.Equal(false, IsFloat("3"))
+	assert.Equal(false, IsFloat(0))
+	assert.Equal(true, IsFloat(0.1))
+}
+
+func TestIsInt(t *testing.T) {
+	assert := internal.NewAssert(t, "TestIsInt")
+
+	assert.Equal(false, IsInt(""))
+	assert.Equal(false, IsInt("3"))
+	assert.Equal(false, IsInt(0.1))
+	assert.Equal(true, IsInt(0))
+	assert.Equal(true, IsInt(-1))
+}
+
+func TestIsASCII(t *testing.T) {
+	assert := internal.NewAssert(t, "TestIsASCII")
+
+	assert.Equal(true, IsASCII("ABC"))
+	assert.Equal(true, IsASCII("123"))
+	assert.Equal(true, IsASCII(""))
+	assert.Equal(false, IsASCII("😄"))
+	assert.Equal(false, IsASCII("你好"))
+}
+
+func TestIsPrintable(t *testing.T) {
+	assert := internal.NewAssert(t, "TestIsPrintable")
+
+	assert.Equal(true, IsPrintable("ABC"))
+	assert.Equal(true, IsPrintable("{id: 123}"))
+	assert.Equal(true, IsPrintable(""))
+	assert.Equal(true, IsPrintable("😄"))
+	assert.Equal(false, IsPrintable("\u0000"))
+}
+
+func TestIsBin(t *testing.T) {
+	t.Parallel()
+	assert := internal.NewAssert(t, "TestIsBin")
+
+	assert.Equal(true, IsBin("0101"))
+	assert.Equal(true, IsBin("0b1101"))
+
+	assert.Equal(false, IsBin("b1101"))
+	assert.Equal(false, IsBin("1201"))
+	assert.Equal(false, IsBin(""))
+}
+
+func TestIsHex(t *testing.T) {
+	t.Parallel()
+	assert := internal.NewAssert(t, "TestIsHex")
+
+	assert.Equal(true, IsHex("ABCDE"))
+	assert.Equal(true, IsHex("abcde"))
+	assert.Equal(true, IsHex("0xabcde"))
+	assert.Equal(true, IsHex("0Xabcde"))
+	assert.Equal(true, IsHex("#abcde"))
+
+	assert.Equal(false, IsHex("cdfeg"))
+	assert.Equal(false, IsHex("0xcdfeg"))
+	assert.Equal(false, IsHex(""))
+}
+
+func TestIsBase64URL(t *testing.T) {
+	t.Parallel()
+	assert := internal.NewAssert(t, "TestIsBase64URL")
+
+	assert.Equal(true, IsBase64URL("SAGsbG8sIHdvcmxkIQ"))
+	assert.Equal(true, IsBase64URL("SAGsbG8sIHdvcmxkIQ=="))
+
+	assert.Equal(false, IsBase64URL("SAGsbG8sIHdvcmxkIQ="))
+	assert.Equal(false, IsBase64URL("SAGsbG8sIHdvcmxkIQ==="))
+	// assert.Equal(false, IsBase64URL(""))
+}
+
+func TestIsJWT(t *testing.T) {
+	t.Parallel()
+	assert := internal.NewAssert(t, "TestIsJWT")
+
+	assert.Equal(true, IsJWT("eyJhbGciOiJIUzI1NiIsInR5cCI6IkpXVCJ9.eyJzdWIiOiIxMjM0NTY3ODkwIiwibWVzc2FnZSI6IlB1dGluIGlzIGFic29sdXRlIHNoaXQiLCJpYXQiOjE1MTYyMzkwMjJ9.wkLWA5GtCpWdxNOrRse8yHZgORDgf8TpJp73WUQb910"))
+	assert.Equal(false, IsJWT("abc"))
+}
+
+func TestIsVisa(t *testing.T) {
+	t.Parallel()
+	assert := internal.NewAssert(t, "TestIsVisa")
+
+	assert.Equal(true, IsVisa("4111111111111111"))
+	assert.Equal(false, IsVisa("123"))
+}
+
+func TestIsMasterCard(t *testing.T) {
+	t.Parallel()
+	assert := internal.NewAssert(t, "TestIsMasterCard")
+
+	assert.Equal(true, IsMasterCard("5425233430109903"))
+	assert.Equal(false, IsMasterCard("4111111111111111"))
+}
+
+func TestIsAmericanExpress(t *testing.T) {
+	t.Parallel()
+	assert := internal.NewAssert(t, "TestIsAmericanExpress")
+
+	assert.Equal(true, IsAmericanExpress("342883359122187"))
+	assert.Equal(false, IsAmericanExpress("3782822463100007"))
+}
+
+func TestIsUnionPay(t *testing.T) {
+	t.Parallel()
+	assert := internal.NewAssert(t, "TestIsUnionPay")
+
+	assert.Equal(true, IsUnionPay("6221263430109903"))
+	assert.Equal(false, IsUnionPay("3782822463100007"))
+}
+
+func TestIsChinaUnionPay(t *testing.T) {
+	t.Parallel()
+	assert := internal.NewAssert(t, "TestIsChinaUnionPay")
+
+	assert.Equal(true, IsChinaUnionPay("6250941006528599"))
+	assert.Equal(false, IsChinaUnionPay("3782822463100007"))
+}