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Validator ​

Package validator contains some functions for data validation.

Source: ​

Usage: ​

go
import (
    "github.com/duke-git/lancet/v2/validator"
)
import (
    "github.com/duke-git/lancet/v2/validator"
)

Index ​

Documentation ​

ContainChinese ​

Check if the string contain mandarin chinese.

Signature:

go
func ContainChinese(s string) bool
func ContainChinese(s string) bool

Example:运行

go
import (
    "fmt"
    "github.com/duke-git/lancet/v2/validator"
)

func main() {
    result1 := validator.ContainChinese("你好")
    result2 := validator.ContainChinese("你好hello")
    result3 := validator.ContainChinese("hello")

    fmt.Println(result1)
    fmt.Println(result2)
    fmt.Println(result3)

    // Output:
    // true
    // true
    // false
}
import (
    "fmt"
    "github.com/duke-git/lancet/v2/validator"
)

func main() {
    result1 := validator.ContainChinese("你好")
    result2 := validator.ContainChinese("你好hello")
    result3 := validator.ContainChinese("hello")

    fmt.Println(result1)
    fmt.Println(result2)
    fmt.Println(result3)

    // Output:
    // true
    // true
    // false
}

ContainLetter ​

Check if the string contain at least one letter.

Signature:

go
func ContainLetter(str string) bool
func ContainLetter(str string) bool

Example:运行

go
import (
    "fmt"
    "github.com/duke-git/lancet/v2/validator"
)

func main() {
    result1 := validator.ContainLetter("你好")
    result2 := validator.ContainLetter("&@#$%^&*")
    result3 := validator.ContainLetter("ab1")

    fmt.Println(result1)
    fmt.Println(result2)
    fmt.Println(result3)

    // Output:
    // false
    // false
    // true
}
import (
    "fmt"
    "github.com/duke-git/lancet/v2/validator"
)

func main() {
    result1 := validator.ContainLetter("你好")
    result2 := validator.ContainLetter("&@#$%^&*")
    result3 := validator.ContainLetter("ab1")

    fmt.Println(result1)
    fmt.Println(result2)
    fmt.Println(result3)

    // Output:
    // false
    // false
    // true
}

ContainLower ​

Check if the string contain at least one lower case letter a-z.

Signature:

go
func ContainLower(str string) bool
func ContainLower(str string) bool

Example:运行

go
import (
    "fmt"
    "github.com/duke-git/lancet/v2/validator"
)

func main() {
    result1 := validator.ContainLower("abc")
    result2 := validator.ContainLower("aBC")
    result3 := validator.ContainLower("ABC")

    fmt.Println(result1)
    fmt.Println(result2)
    fmt.Println(result3)

    // Output:
    // true
    // true
    // false
}
import (
    "fmt"
    "github.com/duke-git/lancet/v2/validator"
)

func main() {
    result1 := validator.ContainLower("abc")
    result2 := validator.ContainLower("aBC")
    result3 := validator.ContainLower("ABC")

    fmt.Println(result1)
    fmt.Println(result2)
    fmt.Println(result3)

    // Output:
    // true
    // true
    // false
}

ContainUpper ​

Check if the string contain at least one upper case letter A-Z.

Signature:

go
func ContainUpper(str string) bool
func ContainUpper(str string) bool

Example:运行

go
import (
    "fmt"
    "github.com/duke-git/lancet/v2/validator"
)

func main() {
    result1 := validator.ContainUpper("ABC")
    result2 := validator.ContainUpper("abC")
    result3 := validator.ContainUpper("abc")

    fmt.Println(result1)
    fmt.Println(result2)
    fmt.Println(result3)

    // Output:
    // true
    // true
    // false
}
import (
    "fmt"
    "github.com/duke-git/lancet/v2/validator"
)

func main() {
    result1 := validator.ContainUpper("ABC")
    result2 := validator.ContainUpper("abC")
    result3 := validator.ContainUpper("abc")

    fmt.Println(result1)
    fmt.Println(result2)
    fmt.Println(result3)

    // Output:
    // true
    // true
    // false
}

IsAlpha ​

Check if the string contains only letters (a-zA-Z).

Signature:

go
func IsAlpha(s string) bool
func IsAlpha(s string) bool

Example:运行

go
import (
    "fmt"
    "github.com/duke-git/lancet/v2/validator"
)

func main() {
    result1 := validator.IsAlpha("abc")
    result2 := validator.IsAlpha("ab1")
    result3 := validator.IsAlpha("")

    fmt.Println(result1)
    fmt.Println(result2)
    fmt.Println(result3)

    // Output:
    // true
    // false
    // false
}
import (
    "fmt"
    "github.com/duke-git/lancet/v2/validator"
)

func main() {
    result1 := validator.IsAlpha("abc")
    result2 := validator.IsAlpha("ab1")
    result3 := validator.IsAlpha("")

    fmt.Println(result1)
    fmt.Println(result2)
    fmt.Println(result3)

    // Output:
    // true
    // false
    // false
}

IsAllUpper ​

Check if string is all upper case letters A-Z.

Signature:

go
func IsAllUpper(str string) bool
func IsAllUpper(str string) bool

Example:运行

go
import (
    "fmt"
    "github.com/duke-git/lancet/v2/validator"
)

func main() {
    result1 := validator.IsAllUpper("ABC")
    result2 := validator.IsAllUpper("ABc")
    result3 := validator.IsAllUpper("AB1")

    fmt.Println(result1)
    fmt.Println(result2)
    fmt.Println(result3)

    // Output:
    // true
    // false
    // false
}
import (
    "fmt"
    "github.com/duke-git/lancet/v2/validator"
)

func main() {
    result1 := validator.IsAllUpper("ABC")
    result2 := validator.IsAllUpper("ABc")
    result3 := validator.IsAllUpper("AB1")

    fmt.Println(result1)
    fmt.Println(result2)
    fmt.Println(result3)

    // Output:
    // true
    // false
    // false
}

IsAllLower ​

Check if string is all lower case letters a-z.

Signature:

go
func IsAllLower(str string) bool
func IsAllLower(str string) bool

Example:运行

go
import (
    "fmt"
    "github.com/duke-git/lancet/v2/validator"
)

func main() {
    result1 := validator.IsAllLower("abc")
    result2 := validator.IsAllLower("abC")
    result3 := validator.IsAllLower("ab1")

    fmt.Println(result1)
    fmt.Println(result2)
    fmt.Println(result3)

    // Output:
    // true
    // false
    // false
}
import (
    "fmt"
    "github.com/duke-git/lancet/v2/validator"
)

func main() {
    result1 := validator.IsAllLower("abc")
    result2 := validator.IsAllLower("abC")
    result3 := validator.IsAllLower("ab1")

    fmt.Println(result1)
    fmt.Println(result2)
    fmt.Println(result3)

    // Output:
    // true
    // false
    // false
}

IsASCII ​

Checks if string is all ASCII char.

Signature:

go
func IsASCII(str string) bool
func IsASCII(str string) bool

Example:运行

go
import (
    "fmt"
    "github.com/duke-git/lancet/v2/validator"
)

func main() {
    result1 := validator.IsASCII("ABC")
    result2 := validator.IsASCII("123")
    result3 := validator.IsASCII("")
    result4 := validator.IsASCII("😄")
    result5 := validator.IsASCII("你好")

    fmt.Println(result1)
    fmt.Println(result2)
    fmt.Println(result3)
    fmt.Println(result4)
    fmt.Println(result5)

    // Output:
    // true
    // true
    // true
    // false
    // false
}
import (
    "fmt"
    "github.com/duke-git/lancet/v2/validator"
)

func main() {
    result1 := validator.IsASCII("ABC")
    result2 := validator.IsASCII("123")
    result3 := validator.IsASCII("")
    result4 := validator.IsASCII("😄")
    result5 := validator.IsASCII("你好")

    fmt.Println(result1)
    fmt.Println(result2)
    fmt.Println(result3)
    fmt.Println(result4)
    fmt.Println(result5)

    // Output:
    // true
    // true
    // true
    // false
    // false
}

IsBase64 ​

Check if the string is base64 string.

Signature:

go
func IsBase64(base64 string) bool
func IsBase64(base64 string) bool

Example:运行

go
import (
    "fmt"
    "github.com/duke-git/lancet/v2/validator"
)

func main() {
    result1 := validator.IsBase64("aGVsbG8=")
    result2 := validator.IsBase64("123456")

    fmt.Println(result1)
    fmt.Println(result2)

    // Output:
    // true
    // false
}
import (
    "fmt"
    "github.com/duke-git/lancet/v2/validator"
)

func main() {
    result1 := validator.IsBase64("aGVsbG8=")
    result2 := validator.IsBase64("123456")

    fmt.Println(result1)
    fmt.Println(result2)

    // Output:
    // true
    // false
}

IsChineseMobile ​

Check if the string is valid chinese mobile number.

Signature:

go
func IsChineseMobile(mobileNum string) bool
func IsChineseMobile(mobileNum string) bool

Example:运行

go
import (
    "fmt"
    "github.com/duke-git/lancet/v2/validator"
)

func main() {
    result1 := validator.IsChineseMobile("13263527980")
    result2 := validator.IsChineseMobile("434324324")

    fmt.Println(result1)
    fmt.Println(result2)

    // Output:
    // true
    // false
}
import (
    "fmt"
    "github.com/duke-git/lancet/v2/validator"
)

func main() {
    result1 := validator.IsChineseMobile("13263527980")
    result2 := validator.IsChineseMobile("434324324")

    fmt.Println(result1)
    fmt.Println(result2)

    // Output:
    // true
    // false
}

IsChineseIdNum ​

Check if the string is chinese id number.

Signature:

go
func IsChineseIdNum(id string) bool
func IsChineseIdNum(id string) bool

Example:运行

go
import (
    "fmt"
    "github.com/duke-git/lancet/v2/validator"
)

func main() {
    result1 := validator.IsChineseIdNum("210911192105130715")
    result2 := validator.IsChineseIdNum("123456")

    fmt.Println(result1)
    fmt.Println(result2)

    // Output:
    // true
    // false
}
import (
    "fmt"
    "github.com/duke-git/lancet/v2/validator"
)

func main() {
    result1 := validator.IsChineseIdNum("210911192105130715")
    result2 := validator.IsChineseIdNum("123456")

    fmt.Println(result1)
    fmt.Println(result2)

    // Output:
    // true
    // false
}

IsChinesePhone ​

Check if the string is chinese phone number.

Signature:

go
func IsChinesePhone(phone string) bool
func IsChinesePhone(phone string) bool

Example:运行

go
import (
    "fmt"
    "github.com/duke-git/lancet/v2/validator"
)

func main() {
    result1 := validator.IsChinesePhone("010-32116675")
    result2 := validator.IsChinesePhone("123-87562")

    fmt.Println(result1)
    fmt.Println(result2)

    // Output:
    // true
    // false
}
import (
    "fmt"
    "github.com/duke-git/lancet/v2/validator"
)

func main() {
    result1 := validator.IsChinesePhone("010-32116675")
    result2 := validator.IsChinesePhone("123-87562")

    fmt.Println(result1)
    fmt.Println(result2)

    // Output:
    // true
    // false
}

IsCreditCard ​

Check if the string is credit card.

Signature:

go
func IsCreditCard(creditCart string) bool
func IsCreditCard(creditCart string) bool

Example:运行

go
import (
    "fmt"
    "github.com/duke-git/lancet/v2/validator"
)

func main() {
    result1 := validator.IsCreditCard("4111111111111111")
    result2 := validator.IsCreditCard("123456")

    fmt.Println(result1)
    fmt.Println(result2)

    // Output:
    // true
    // false
}
import (
    "fmt"
    "github.com/duke-git/lancet/v2/validator"
)

func main() {
    result1 := validator.IsCreditCard("4111111111111111")
    result2 := validator.IsCreditCard("123456")

    fmt.Println(result1)
    fmt.Println(result2)

    // Output:
    // true
    // false
}

IsDns ​

Check if the string is valid dns.

Signature:

go
func IsDns(dns string) bool
func IsDns(dns string) bool

Example:运行

go
import (
    "fmt"
    "github.com/duke-git/lancet/v2/validator"
)

func main() {
    result1 := validator.IsDns("abc.com")
    result2 := validator.IsDns("a.b.com")
    result3 := validator.IsDns("http://abc.com")

    fmt.Println(result1)
    fmt.Println(result2)
    fmt.Println(result3)

    // Output:
    // true
    // false
    // false
}
import (
    "fmt"
    "github.com/duke-git/lancet/v2/validator"
)

func main() {
    result1 := validator.IsDns("abc.com")
    result2 := validator.IsDns("a.b.com")
    result3 := validator.IsDns("http://abc.com")

    fmt.Println(result1)
    fmt.Println(result2)
    fmt.Println(result3)

    // Output:
    // true
    // false
    // false
}

IsEmail ​

Check if the string is email address.

Signature:

go
func IsEmail(email string) bool
func IsEmail(email string) bool

Example:运行

go
import (
    "fmt"
    "github.com/duke-git/lancet/v2/validator"
)

func main() {
    result1 := validator.IsEmail("abc@xyz.com")
    result2 := validator.IsEmail("a.b@@com")

    fmt.Println(result1)
    fmt.Println(result2)

    // Output:
    // true
    // false
}
import (
    "fmt"
    "github.com/duke-git/lancet/v2/validator"
)

func main() {
    result1 := validator.IsEmail("abc@xyz.com")
    result2 := validator.IsEmail("a.b@@com")

    fmt.Println(result1)
    fmt.Println(result2)

    // Output:
    // true
    // false
}

IsEmptyString ​

Check if the string is empty or not.

Signature:

go
func IsEmptyString(s string) bool
func IsEmptyString(s string) bool

Example:运行

go
import (
    "fmt"
    "github.com/duke-git/lancet/v2/validator"
)

func main() {
    result1 := validator.IsEmptyString("")
    result2 := validator.IsEmptyString(" ")
    result3 := validator.IsEmptyString("\t")

    fmt.Println(result1)
    fmt.Println(result2)
    fmt.Println(result3)

    // Output:
    // true
    // false
    // false
}
import (
    "fmt"
    "github.com/duke-git/lancet/v2/validator"
)

func main() {
    result1 := validator.IsEmptyString("")
    result2 := validator.IsEmptyString(" ")
    result3 := validator.IsEmptyString("\t")

    fmt.Println(result1)
    fmt.Println(result2)
    fmt.Println(result3)

    // Output:
    // true
    // false
    // false
}

IsInt ​

Check if the value is integer(int, unit) or not.

Signature:

go
func IsInt(v any) bool
func IsInt(v any) bool

Example:运行

go
import (
    "fmt"
    "github.com/duke-git/lancet/v2/validator"
)

func main() {
    result1 := validator.IsInt("")
    result2 := validator.IsInt("3")
    result3 := validator.IsInt(0.1)
    result4 := validator.IsInt(0)

    fmt.Println(result1)
    fmt.Println(result2)
    fmt.Println(result3)
    fmt.Println(result4)

    // Output:
    // false
    // false
    // false
    // true
}
import (
    "fmt"
    "github.com/duke-git/lancet/v2/validator"
)

func main() {
    result1 := validator.IsInt("")
    result2 := validator.IsInt("3")
    result3 := validator.IsInt(0.1)
    result4 := validator.IsInt(0)

    fmt.Println(result1)
    fmt.Println(result2)
    fmt.Println(result3)
    fmt.Println(result4)

    // Output:
    // false
    // false
    // false
    // true
}

IsFloat ​

Check if the value is float(float32, float34) or not.

Signature:

go
func IsFloat(v any) bool
func IsFloat(v any) bool

Example:运行

go
import (
    "fmt"
    "github.com/duke-git/lancet/v2/validator"
)

func main() {
    result1 := validator.IsFloat("")
    result2 := validator.IsFloat("3")
    result3 := validator.IsFloat(0)
    result4 := validator.IsFloat(0.1)

    fmt.Println(result1)
    fmt.Println(result2)
    fmt.Println(result3)
    fmt.Println(result4)

    // Output:
    // false
    // false
    // false
    // true
}
import (
    "fmt"
    "github.com/duke-git/lancet/v2/validator"
)

func main() {
    result1 := validator.IsFloat("")
    result2 := validator.IsFloat("3")
    result3 := validator.IsFloat(0)
    result4 := validator.IsFloat(0.1)

    fmt.Println(result1)
    fmt.Println(result2)
    fmt.Println(result3)
    fmt.Println(result4)

    // Output:
    // false
    // false
    // false
    // true
}

IsNumber ​

Check if the value is number(integer, float) or not.

Signature:

go
func IsNumber(v any) bool
func IsNumber(v any) bool

Example:运行

go
import (
    "fmt"
    "github.com/duke-git/lancet/v2/validator"
)

func main() {
    result1 := validator.IsNumber("")
    result2 := validator.IsNumber("3")
    result3 := validator.IsNumber(0.1)
    result4 := validator.IsNumber(0)

    fmt.Println(result1)
    fmt.Println(result2)
    fmt.Println(result3)
    fmt.Println(result4)

    // Output:
    // false
    // false
    // true
    // true
}
import (
    "fmt"
    "github.com/duke-git/lancet/v2/validator"
)

func main() {
    result1 := validator.IsNumber("")
    result2 := validator.IsNumber("3")
    result3 := validator.IsNumber(0.1)
    result4 := validator.IsNumber(0)

    fmt.Println(result1)
    fmt.Println(result2)
    fmt.Println(result3)
    fmt.Println(result4)

    // Output:
    // false
    // false
    // true
    // true
}

IsIntStr ​

Check if the string can convert to a integer.

Signature:

go
func IsIntStr(s string) bool
func IsIntStr(s string) bool

Example:运行

go
import (
    "fmt"
    "github.com/duke-git/lancet/v2/validator"
)

func main() {
    result1 := validator.IsIntStr("+3")
    result2 := validator.IsIntStr("-3")
    result3 := validator.IsIntStr("3.")
    result4 := validator.IsIntStr("abc")

    fmt.Println(result1)
    fmt.Println(result2)
    fmt.Println(result3)
    fmt.Println(result4)

    // Output:
    // true
    // true
    // false
    // false
}
import (
    "fmt"
    "github.com/duke-git/lancet/v2/validator"
)

func main() {
    result1 := validator.IsIntStr("+3")
    result2 := validator.IsIntStr("-3")
    result3 := validator.IsIntStr("3.")
    result4 := validator.IsIntStr("abc")

    fmt.Println(result1)
    fmt.Println(result2)
    fmt.Println(result3)
    fmt.Println(result4)

    // Output:
    // true
    // true
    // false
    // false
}

IsFloatStr ​

Check if the string can convert to a float.

Signature:

go
func IsFloatStr(s string) bool
func IsFloatStr(s string) bool

Example:运行

go
import (
    "fmt"
    "github.com/duke-git/lancet/v2/validator"
)

func main() {
    result1 := validator.IsFloatStr("3.")
    result2 := validator.IsFloatStr("+3.")
    result3 := validator.IsFloatStr("12")
    result4 := validator.IsFloatStr("abc")

    fmt.Println(result1)
    fmt.Println(result2)
    fmt.Println(result3)
    fmt.Println(result4)

    // Output:
    // true
    // true
    // true
    // false
}
import (
    "fmt"
    "github.com/duke-git/lancet/v2/validator"
)

func main() {
    result1 := validator.IsFloatStr("3.")
    result2 := validator.IsFloatStr("+3.")
    result3 := validator.IsFloatStr("12")
    result4 := validator.IsFloatStr("abc")

    fmt.Println(result1)
    fmt.Println(result2)
    fmt.Println(result3)
    fmt.Println(result4)

    // Output:
    // true
    // true
    // true
    // false
}

IsNumberStr ​

Check if the string can convert to a number.

Signature:

go
func IsNumberStr(s string) bool
func IsNumberStr(s string) bool

Example:运行

go
import (
    "fmt"
    "github.com/duke-git/lancet/v2/validator"
)

func main() {
    result1 := validator.IsNumberStr("3.")
    result2 := validator.IsNumberStr("+3.")
    result3 := validator.IsNumberStr("+3e2")
    result4 := validator.IsNumberStr("abc")

    fmt.Println(result1)
    fmt.Println(result2)
    fmt.Println(result3)
    fmt.Println(result4)

    // Output:
    // true
    // true
    // true
    // false
}
import (
    "fmt"
    "github.com/duke-git/lancet/v2/validator"
)

func main() {
    result1 := validator.IsNumberStr("3.")
    result2 := validator.IsNumberStr("+3.")
    result3 := validator.IsNumberStr("+3e2")
    result4 := validator.IsNumberStr("abc")

    fmt.Println(result1)
    fmt.Println(result2)
    fmt.Println(result3)
    fmt.Println(result4)

    // Output:
    // true
    // true
    // true
    // false
}

IsJSON ​

Check if the string is valid JSON.

Signature:

go
func IsJSON(str string) bool
func IsJSON(str string) bool

Example:运行

go
import (
    "fmt"
    "github.com/duke-git/lancet/v2/validator"
)

func main() {
    result1 := validator.IsJSON("{}")
    result2 := validator.IsJSON("{\"name\": \"test\"}")
    result3 := validator.IsJSON("")
    result4 := validator.IsJSON("abc")

    fmt.Println(result1)
    fmt.Println(result2)
    fmt.Println(result3)
    fmt.Println(result4)

    // Output:
    // true
    // true
    // false
    // false
}
import (
    "fmt"
    "github.com/duke-git/lancet/v2/validator"
)

func main() {
    result1 := validator.IsJSON("{}")
    result2 := validator.IsJSON("{\"name\": \"test\"}")
    result3 := validator.IsJSON("")
    result4 := validator.IsJSON("abc")

    fmt.Println(result1)
    fmt.Println(result2)
    fmt.Println(result3)
    fmt.Println(result4)

    // Output:
    // true
    // true
    // false
    // false
}

IsRegexMatch ​

Check if the string match the regexp.

Signature:

go
func IsRegexMatch(s, regex string) bool
func IsRegexMatch(s, regex string) bool

Example:运行

go
import (
    "fmt"
    "github.com/duke-git/lancet/v2/validator"
)

func main() {
    result1 := validator.IsRegexMatch("abc", `^[a-zA-Z]+$`)
    result2 := validator.IsRegexMatch("ab1", `^[a-zA-Z]+$`)

    fmt.Println(result1)
    fmt.Println(result2)

    // Output:
    // true
    // false
}
import (
    "fmt"
    "github.com/duke-git/lancet/v2/validator"
)

func main() {
    result1 := validator.IsRegexMatch("abc", `^[a-zA-Z]+$`)
    result2 := validator.IsRegexMatch("ab1", `^[a-zA-Z]+$`)

    fmt.Println(result1)
    fmt.Println(result2)

    // Output:
    // true
    // false
}

IsIp ​

Check if the string is a ip address.

Signature:

go
func IsIp(ipstr string) bool
func IsIp(ipstr string) bool

Example:运行

go
import (
    "fmt"
    "github.com/duke-git/lancet/v2/validator"
)

func main() {
    result1 := validator.IsIp("127.0.0.1")
    result2 := validator.IsIp("::0:0:0:0:0:0:1")
    result3 := validator.IsIp("127.0.0")
    result4 := validator.IsIp("::0:0:0:0:")

    fmt.Println(result1)
    fmt.Println(result2)
    fmt.Println(result3)
    fmt.Println(result4)

    // Output:
    // true
    // true
    // false
    // false
}
import (
    "fmt"
    "github.com/duke-git/lancet/v2/validator"
)

func main() {
    result1 := validator.IsIp("127.0.0.1")
    result2 := validator.IsIp("::0:0:0:0:0:0:1")
    result3 := validator.IsIp("127.0.0")
    result4 := validator.IsIp("::0:0:0:0:")

    fmt.Println(result1)
    fmt.Println(result2)
    fmt.Println(result3)
    fmt.Println(result4)

    // Output:
    // true
    // true
    // false
    // false
}

IsIpV4 ​

Check if the string is a ipv4 address.

Signature:

go
func IsIpV4(ipstr string) bool
func IsIpV4(ipstr string) bool

Example:运行

go
import (
    "fmt"
    "github.com/duke-git/lancet/v2/validator"
)

func main() {
    result1 := validator.IsIpV4("127.0.0.1")
    result2 := validator.IsIpV4("::0:0:0:0:0:0:1")

    fmt.Println(result1)
    fmt.Println(result2)

    // Output:
    // true
    // false
}
import (
    "fmt"
    "github.com/duke-git/lancet/v2/validator"
)

func main() {
    result1 := validator.IsIpV4("127.0.0.1")
    result2 := validator.IsIpV4("::0:0:0:0:0:0:1")

    fmt.Println(result1)
    fmt.Println(result2)

    // Output:
    // true
    // false
}

IsIpV6 ​

Check if the string is a ipv6 address.

Signature:

go
func IsIpV6(ipstr string) bool
func IsIpV6(ipstr string) bool

Example:运行

go
import (
    "fmt"
    "github.com/duke-git/lancet/v2/validator"
)

func main() {
    result1 := validator.IsIpV6("127.0.0.1")
    result2 := validator.IsIpV6("::0:0:0:0:0:0:1")

    fmt.Println(result1)
    fmt.Println(result2)

    // Output:
    // false
    // true
}
import (
    "fmt"
    "github.com/duke-git/lancet/v2/validator"
)

func main() {
    result1 := validator.IsIpV6("127.0.0.1")
    result2 := validator.IsIpV6("::0:0:0:0:0:0:1")

    fmt.Println(result1)
    fmt.Println(result2)

    // Output:
    // false
    // true
}

IsStrongPassword ​

Check if the string is strong password (alpha(lower+upper) + number + special chars(!@#$%^&*()?gt<)).

Signature:

go
func IsStrongPassword(password string, length int) bool
func IsStrongPassword(password string, length int) bool

Example:运行

go
import (
    "fmt"
    "github.com/duke-git/lancet/v2/validator"
)

func main() {
    result1 := validator.IsStrongPassword("abcABC", 6)
    result2 := validator.IsStrongPassword("abcABC123@#$", 10)

    fmt.Println(result1)
    fmt.Println(result2)

    // Output:
    // false
    // true
}
import (
    "fmt"
    "github.com/duke-git/lancet/v2/validator"
)

func main() {
    result1 := validator.IsStrongPassword("abcABC", 6)
    result2 := validator.IsStrongPassword("abcABC123@#$", 10)

    fmt.Println(result1)
    fmt.Println(result2)

    // Output:
    // false
    // true
}

IsUrl ​

Check if the string is url.

Signature:

go
func IsUrl(str string) bool
func IsUrl(str string) bool

Example:运行

go
import (
    "fmt"
    "github.com/duke-git/lancet/v2/validator"
)

func main() {
    result1 := validator.IsUrl("abc.com")
    result2 := validator.IsUrl("http://abc.com")
    result3 := validator.IsUrl("abc")

    fmt.Println(result1)
    fmt.Println(result2)
    fmt.Println(result3)

    // Output:
    // true
    // true
    // false
}
import (
    "fmt"
    "github.com/duke-git/lancet/v2/validator"
)

func main() {
    result1 := validator.IsUrl("abc.com")
    result2 := validator.IsUrl("http://abc.com")
    result3 := validator.IsUrl("abc")

    fmt.Println(result1)
    fmt.Println(result2)
    fmt.Println(result3)

    // Output:
    // true
    // true
    // false
}

IsWeakPassword ​

Checks if the string is weak password（only letter or only number or letter + number） .

Signature:

go
func IsWeakPassword(password string, length int) bool
func IsWeakPassword(password string, length int) bool

Example:运行

go
import (
    "fmt"
    "github.com/duke-git/lancet/v2/validator"
)

func main() {
    result1 := validator.IsWeakPassword("abcABC")
    result2 := validator.IsWeakPassword("abc123@#$")

    fmt.Println(result1)
    fmt.Println(result2)

    // Output:
    // true
    // false
}
import (
    "fmt"
    "github.com/duke-git/lancet/v2/validator"
)

func main() {
    result1 := validator.IsWeakPassword("abcABC")
    result2 := validator.IsWeakPassword("abc123@#$")

    fmt.Println(result1)
    fmt.Println(result2)

    // Output:
    // true
    // false
}

IsZeroValue ​

Checks if passed value is a zero value.

Signature:

go
func IsZeroValue(value any) bool
func IsZeroValue(value any) bool

Example:运行

go
import (
    "fmt"
    "github.com/duke-git/lancet/v2/validator"
)

func main() {
    result1 := validator.IsZeroValue("")
    result2 := validator.IsZeroValue(0)
    result3 := validator.IsZeroValue("abc")
    result4 := validator.IsZeroValue(1)

    fmt.Println(result1)
    fmt.Println(result2)
    fmt.Println(result3)
    fmt.Println(result4)

    // Output:
    // true
    // true
    // false
    // false
}
import (
    "fmt"
    "github.com/duke-git/lancet/v2/validator"
)

func main() {
    result1 := validator.IsZeroValue("")
    result2 := validator.IsZeroValue(0)
    result3 := validator.IsZeroValue("abc")
    result4 := validator.IsZeroValue(1)

    fmt.Println(result1)
    fmt.Println(result2)
    fmt.Println(result3)
    fmt.Println(result4)

    // Output:
    // true
    // true
    // false
    // false
}

IsGBK ​

Checks if data encoding is gbk(Chinese character internal code extension specification). this function is implemented by whether double bytes fall within the encoding range of gbk,while each byte of utf-8 encoding format falls within the encoding range of gbk.Therefore, utf8.valid() should be called first to check whether it is not utf-8 encoding and then call IsGBK() to check gbk encoding. like the example.

Signature:

go
func IsGBK(data []byte) bool
func IsGBK(data []byte) bool

Example:运行

go
import (
    "fmt"
    "golang.org/x/text/encoding/simplifiedchinese"
    "github.com/duke-git/lancet/v2/validator"
)

func main() {
    str := "你好"
    gbkData, _ := simplifiedchinese.GBK.NewEncoder().Bytes([]byte(str))

    result := validator.IsGBK(gbkData)

    fmt.Println(result)

    // Output:
    // true
}
import (
    "fmt"
    "golang.org/x/text/encoding/simplifiedchinese"
    "github.com/duke-git/lancet/v2/validator"
)

func main() {
    str := "你好"
    gbkData, _ := simplifiedchinese.GBK.NewEncoder().Bytes([]byte(str))

    result := validator.IsGBK(gbkData)

    fmt.Println(result)

    // Output:
    // true
}

IsPrintable ​

Checks if string is all printable chars.

Signature:

go
func IsPrintable(str string) bool
func IsPrintable(str string) bool

Example:运行

go
import (
    "fmt"
    "github.com/duke-git/lancet/v2/validator"
)

func main() {
    result1 := validator.IsPrintable("ABC")
    result2 := validator.IsPrintable("{id: 123}")
    result3 := validator.IsPrintable("")
    result4 := validator.IsPrintable("😄")
    result5 := validator.IsPrintable("\u0000")

    fmt.Println(result1)
    fmt.Println(result2)
    fmt.Println(result3)
    fmt.Println(result4)
    fmt.Println(result5)

    // Output:
    // true
    // true
    // true
    // true
    // false
}
import (
    "fmt"
    "github.com/duke-git/lancet/v2/validator"
)

func main() {
    result1 := validator.IsPrintable("ABC")
    result2 := validator.IsPrintable("{id: 123}")
    result3 := validator.IsPrintable("")
    result4 := validator.IsPrintable("😄")
    result5 := validator.IsPrintable("\u0000")

    fmt.Println(result1)
    fmt.Println(result2)
    fmt.Println(result3)
    fmt.Println(result4)
    fmt.Println(result5)

    // Output:
    // true
    // true
    // true
    // true
    // false
}

Released under the MIT License.

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