mirror of
https://github.com/duke-git/lancet.git
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445 lines
6.6 KiB
Markdown
445 lines
6.6 KiB
Markdown
# Fileutil
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fileutil包支持文件基本操作。
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<div STYLE="page-break-after: always;"></div>
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## 源码:
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- [https://github.com/duke-git/lancet/blob/main/fileutil/file.go](https://github.com/duke-git/lancet/blob/main/fileutil/file.go)
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<div STYLE="page-break-after: always;"></div>
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## 用法:
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```go
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import (
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"github.com/duke-git/lancet/v2/fileutil"
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)
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```
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<div STYLE="page-break-after: always;"></div>
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## 目录
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- [ClearFile](#ClearFile)
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- [CreateFile](#CreateFile)
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- [CopyFile](#CopyFile)
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- [FileMode](#FileMode)
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- [MiMeType](#MiMeType)
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- [IsExist](#IsExist)
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- [IsLink](#IsLink)
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- [IsDir](#IsDir)
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- [ListFileNames](#ListFileNames)
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- [RemoveFile](#RemoveFile)
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- [ReadFileToString](#ReadFileToString)
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- [ReadFileByLine](#ReadFileByLine)
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- [Zip](#Zip)
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- [UnZip](#UnZip)
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<div STYLE="page-break-after: always;"></div>
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## 文档
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### <span id="ClearFile">ClearFile</span>
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<p>清空文件内容</p>
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<b>函数签名:</b>
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```go
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func ClearFile(path string) error
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```
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<b>例子:</b>
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```go
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package main
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import (
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"fmt"
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"github.com/duke-git/lancet/v2/fileutil"
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)
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func main() {
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err := fileutil.ClearFile("./test.txt")
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if err != nil {
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fmt.Println(err)
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}
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}
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```
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### <span id="CreateFile">CreateFile</span>
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<p>创建文件，创建成功返回true, 否则返回false</p>
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<b>函数签名:</b>
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```go
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func CreateFile(path string) bool
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```
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<b>例子:</b>
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```go
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package main
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import (
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"fmt"
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"github.com/duke-git/lancet/v2/fileutil"
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)
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func main() {
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isCreatedSucceed := fileutil.CreateFile("./test.txt")
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fmt.Println(isCreatedSucceed)
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}
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```
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### <span id="CopyFile">CopyFile</span>
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<p>拷贝文件，会覆盖原有的拷贝文件</p>
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<b>函数签名:</b>
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```go
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func CopyFile(srcFilePath string, dstFilePath string) error
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```
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<b>例子:</b>
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```go
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package main
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import (
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"fmt"
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"github.com/duke-git/lancet/v2/fileutil"
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)
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func main() {
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err := fileutil.CopyFile("./test.txt", "./test_copy.txt")
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if err != nil {
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fmt.Println(err)
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}
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}
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```
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### <span id="FileMode">FileMode</span>
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<p>获取文件mode信息</p>
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<b>函数签名:</b>
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```go
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func FileMode(path string) (fs.FileMode, error)
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```
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<b>例子:</b>
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```go
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package main
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import (
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"fmt"
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"github.com/duke-git/lancet/v2/fileutil"
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)
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func main() {
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mode, err := fileutil.FileMode("./test.txt")
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if err != nil {
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fmt.Println(err)
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}
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fmt.Println(mode)
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}
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```
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### <span id="MiMeType">MiMeType</span>
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<p>获取文件mime类型, 'file'参数的类型必须是string或者*os.File</p>
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<b>函数签名:</b>
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```go
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func MiMeType(file any) string
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```
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<b>例子:</b>
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```go
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package main
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import (
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"fmt"
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"os"
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"github.com/duke-git/lancet/v2/fileutil"
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)
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func main() {
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type1 := fileutil.MiMeType("./test.txt")
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fmt.Println(type1) //text/plain; charset=utf-8
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f, _ := os.Open("./file.go")
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type2 := fileutil.MiMeType(f)
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fmt.Println(type2) //text/plain; charset=utf-8
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}
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```
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### <span id="IsExist">IsExist</span>
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<p>判断文件或目录是否存在</p>
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<b>函数签名:</b>
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```go
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func IsExist(path string) bool
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```
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<b>例子:</b>
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```go
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package main
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import (
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"fmt"
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"github.com/duke-git/lancet/v2/fileutil"
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)
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func main() {
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fileutil.CreateFile("./test.txt")
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isFileExist := fileutil.IsExist("./test.txt")
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fmt.Println(isFileExist) //true
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}
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```
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### <span id="IsLink">IsLink</span>
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<p>判断文件是否是符号链接</p>
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<b>函数签名:</b>
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```go
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func IsLink(path string) bool
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```
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<b>例子:</b>
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```go
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package main
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import (
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"fmt"
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"github.com/duke-git/lancet/v2/fileutil"
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)
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func main() {
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isLinkFile := fileutil.IsLink("./test.txt")
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fmt.Println(isLinkFile) //false
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}
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```
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### <span id="IsDir">IsDir</span>
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<p>判断目录是否存在</p>
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<b>函数签名:</b>
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```go
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func IsDir(path string) bool
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```
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<b>例子:</b>
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```go
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package main
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import (
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"fmt"
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"github.com/duke-git/lancet/v2/fileutil"
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)
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func main() {
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isDir := fileutil.IsDir("./")
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fmt.Println(isDir) //true
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isDir = fileutil.IsDir("./test.txt")
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fmt.Println(isDir) //false
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}
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```
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### <span id="ListFileNames">ListFileNames</span>
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<p>返回目录下所有文件名</p>
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<b>函数签名:</b>
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```go
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func ListFileNames(path string) ([]string, error)
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```
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<b>例子:</b>
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```go
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package main
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import (
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"fmt"
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"github.com/duke-git/lancet/v2/fileutil"
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)
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func main() {
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fileNames, _ := fileutil.ListFileNames("./")
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fmt.Println(fileNames)
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}
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```
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### <span id="RemoveFile">RemoveFile</span>
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<p>删除文件</p>
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<b>函数签名:</b>
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```go
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func RemoveFile(path string) error
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```
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<b>例子:</b>
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```go
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package main
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import (
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"fmt"
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"github.com/duke-git/lancet/v2/fileutil"
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)
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func main() {
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err := fileutil.RemoveFile("./test.txt")
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if err != nil {
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fmt.Println(err)
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}
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}
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```
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### <span id="ReadFileToString">ReadFileToString</span>
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<p>读取文件内容并返回字符串</p>
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<b>函数签名:</b>
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```go
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func ReadFileToString(path string) (string, error)
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```
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<b>例子:</b>
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```go
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package main
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import (
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"fmt"
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"os"
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"github.com/duke-git/lancet/v2/fileutil"
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)
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func main() {
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path := "./test.txt"
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fileutil.CreateFile(path)
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f, _ := os.OpenFile(path, os.O_WRONLY|os.O_TRUNC, 0777)
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f.WriteString("hello world")
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content, _ := fileutil.ReadFileToString(path)
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fmt.Println(content) //hello world
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}
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```
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### <span id="ReadFileByLine">ReadFileByLine</span>
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<p>按行读取文件内容，返回字符串切片包含每一行</p>
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<b>函数签名:</b>
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```go
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func ReadFileByLine(path string)([]string, error)
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```
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<b>例子:</b>
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```go
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package main
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import (
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"fmt"
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"os"
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"github.com/duke-git/lancet/v2/fileutil"
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)
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func main() {
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path := "./text.txt"
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fileutil.CreateFile(path)
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f, _ := os.OpenFile(path, os.O_WRONLY|os.O_TRUNC, 0777)
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defer f.Close()
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f.WriteString("hello\nworld")
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contents, _ := fileutil.ReadFileByLine(path)
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fmt.Println(contents) //[]string{"hello", "world"}
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}
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```
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### <span id="Zip">Zip</span>
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<p>zip压缩文件, fpath参数可以是文件或目录</p>
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<b>函数签名:</b>
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```go
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func Zip(fpath string, destPath string) error
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```
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<b>例子:</b>
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```go
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package main
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import (
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"fmt"
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"github.com/duke-git/lancet/v2/fileutil"
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)
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func main() {
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err := fileutil.Zip("./test.txt", "./test.zip")
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if err != nil {
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fmt.Println(err)
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}
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}
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```
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### <span id="UnZip">UnZip</span>
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<p>zip解压缩文件并保存在目录中</p>
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<b>Signature:</b>
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```go
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func UnZip(zipFile string, destPath string) error
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```
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<b>例子:</b>
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```go
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package main
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import (
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"fmt"
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"github.com/duke-git/lancet/v2/fileutil"
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)
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func main() {
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err := fileutil.Zip("./test.zip", "./unzip/test.txt")
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if err != nil {
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fmt.Println(err)
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}
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}
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```
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