mirror of
https://github.com/duke-git/lancet.git
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751 lines
13 KiB
Markdown
751 lines
13 KiB
Markdown
# Strutil
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Package strutil contains some functions to manipulate string.
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<div STYLE="page-break-after: always;"></div>
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## Source:
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- [https://github.com/duke-git/lancet/blob/main/strutil/string.go](https://github.com/duke-git/lancet/blob/main/strutil/string.go)
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<div STYLE="page-break-after: always;"></div>
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## Usage:
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```go
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import (
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"github.com/duke-git/lancet/v2/strutil"
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)
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```
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<div STYLE="page-break-after: always;"></div>
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## Index
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- [After](#After)
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- [AfterLast](#AfterLast)
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- [Before](#Before)
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- [BeforeLast](#BeforeLast)
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- [CamelCase](#CamelCase)
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- [Capitalize](#Capitalize)
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- [IsString](#IsString)
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- [KebabCase](#KebabCase)
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- [UpperKebabCase](#UpperKebabCase)
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- [LowerFirst](#LowerFirst)
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- [UpperFirst](#UpperFirst)
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- [PadEnd](#PadEnd)
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- [PadStart](#PadStart)
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- [Reverse](#Reverse)
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- [SnakeCase](#SnakeCase)
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- [UpperSnakeCase](#UpperSnakeCase)
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- [SplitEx](#SplitEx)
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- [Substring](#Substring)
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- [Wrap](#Wrap)
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- [Unwrap](#Unwrap)
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<div STYLE="page-break-after: always;"></div>
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## Documentation
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### <span id="After">After</span>
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<p>Returns the substring after the first occurrence of a specified string in the source string.</p>
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<b>Signature:</b>
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```go
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func After(s, char string) string
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```
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<b>Example:</b>
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```go
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import (
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"fmt"
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"github.com/duke-git/lancet/v2/strutil"
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)
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func main() {
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s1 := strutil.After("lancet", "")
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fmt.Println(s1) //lancet
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s2 := strutil.After("github.com/test/lancet", "/")
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fmt.Println(s2) //test/lancet
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s3 := strutil.After("github.com/test/lancet", "test")
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fmt.Println(s3) // /lancet
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}
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```
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### <span id="AfterLast">AfterLast</span>
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<p>Returns the substring after the last occurrence of a specified string in the source string.</p>
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<b>Signature:</b>
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```go
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func AfterLast(s, char string) string
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```
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<b>Example:</b>
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```go
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import (
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"fmt"
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"github.com/duke-git/lancet/v2/strutil"
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)
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func main() {
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s1 := strutil.AfterLast("lancet", "")
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fmt.Println(s1) //lancet
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s2 := strutil.AfterLast("github.com/test/lancet", "/")
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fmt.Println(s2) //lancet
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s3 := strutil.AfterLast("github.com/test/test/lancet", "test")
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fmt.Println(s3) // /test/lancet
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}
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```
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### <span id="Before">Before</span>
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<p>Returns the substring of the source string up to the first occurrence of the specified string.</p>
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<b>Signature:</b>
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```go
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func Before(s, char string) string
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```
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<b>Example:</b>
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```go
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import (
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"fmt"
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"github.com/duke-git/lancet/v2/strutil"
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)
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func main() {
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s1 := strutil.Before("lancet", "")
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fmt.Println(s1) //lancet
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s2 := strutil.Before("github.com/test/lancet", "/")
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fmt.Println(s2) //github.com
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s3 := strutil.Before("github.com/test/lancet", "test")
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fmt.Println(s3) // github.com/
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}
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```
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### <span id="BeforeLast">BeforeLast</span>
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<p>Returns the substring of the source string up to the last occurrence of the specified string.</p>
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<b>Signature:</b>
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```go
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func BeforeLast(s, char string) string
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```
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<b>Example:</b>
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```go
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import (
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"fmt"
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"github.com/duke-git/lancet/v2/strutil"
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)
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func main() {
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s1 := strutil.BeforeLast("lancet", "")
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fmt.Println(s1) //lancet
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s2 := strutil.BeforeLast("github.com/test/lancet", "/")
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fmt.Println(s2) //github.com/test
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s3 := strutil.BeforeLast("github.com/test/test/lancet", "test")
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fmt.Println(s3) //github.com/test/
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}
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```
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### <span id="CamelCase">CamelCase</span>
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<p>Coverts string to camelCase string, non letters and numbers will be ignored.</p>
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<b>Signature:</b>
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```go
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func CamelCase(s string) string
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```
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<b>Example:</b>
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```go
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import (
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"fmt"
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"github.com/duke-git/lancet/v2/strutil"
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)
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func main() {
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s1 := strutil.CamelCase("foo_bar")
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fmt.Println(s1) //fooBar
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s2 := strutil.CamelCase("Foo-Bar")
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fmt.Println(s2) //fooBar
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s3 := strutil.CamelCase("Foo&bar")
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fmt.Println(s3) //fooBar
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s4 := strutil.CamelCase("foo bar")
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fmt.Println(s4) //fooBar
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s4 := strutil.CamelCase("Foo-#1😄$_%^&*(1bar")
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fmt.Println(s4) //foo11Bar
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}
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```
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### <span id="KebabCase">KebabCase</span>
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<p>KebabCase covert string to kebab-case, non letters and numbers will be ignored.</p>
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<b>Signature:</b>
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```go
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func KebabCase(s string) string
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```
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<b>Example:</b>
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```go
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import (
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"fmt"
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"github.com/duke-git/lancet/v2/strutil"
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)
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func main() {
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s1 := strutil.KebabCase("Foo Bar-")
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fmt.Println(s1) //foo-bar
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s2 := strutil.KebabCase("foo_Bar")
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fmt.Println(s2) //foo-bar
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s3 := strutil.KebabCase("fooBar")
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fmt.Println(s3) //foo-bar
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s4 := strutil.KebabCase("__FOO_BAR__")
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fmt.Println(s4) //foo-bar
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}
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```
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### <span id="UpperKebabCase">UpperKebabCase</span>
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<p>UpperKebabCase covert string to upper KEBAB-CASE, non letters and numbers will be ignored.</p>
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<b>Signature:</b>
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```go
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func KebabCase(s string) string
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```
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<b>Example:</b>
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```go
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import (
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"fmt"
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"github.com/duke-git/lancet/v2/strutil"
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)
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func main() {
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s1 := strutil.UpperKebabCase("Foo Bar-")
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fmt.Println(s1) //FOO-BAR
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s2 := strutil.UpperKebabCase("foo_Bar")
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fmt.Println(s2) //FOO-BAR
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s3 := strutil.UpperKebabCase("fooBar")
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fmt.Println(s3) //FOO-BAR
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s4 := strutil.UpperKebabCase("__FOO_BAR__")
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fmt.Println(s4) //FOO-BAR
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}
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```
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### <span id="Capitalize">Capitalize</span>
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<p>Convert the first character of a string to upper case.</p>
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<b>Signature:</b>
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```go
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func Capitalize(s string) string
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```
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<b>Example:</b>
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```go
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import (
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"fmt"
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"github.com/duke-git/lancet/v2/strutil"
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)
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func main() {
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s1 := strutil.Capitalize("foo")
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fmt.Println(s1) //foo
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s2 := strutil.Capitalize("Foo")
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fmt.Println(s2) //foo
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s3 := strutil.Capitalize("FOo"
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fmt.Println(s3) //fOo
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}
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```
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### <span id="IsString">IsString</span>
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<p>Check if the value's data type is string.</p>
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<b>Signature:</b>
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```go
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func IsString(v any) bool
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```
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<b>Example:</b>
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```go
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import (
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"fmt"
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"github.com/duke-git/lancet/v2/strutil"
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)
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func main() {
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fmt.Println(strutil.IsString("lancet")) //true
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fmt.Println(strutil.IsString("")) //true
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fmt.Println(strutil.IsString(1)) //false
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fmt.Println(strutil.IsString("")) //false
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fmt.Println(strutil.IsString([]string{})) //false
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}
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```
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### <span id="KebabCase">KebabCase</span>
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<p>Covert string to kebab-case.</p>
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<b>Signature:</b>
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```go
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func KebabCase(s string) string
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```
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<b>Example:</b>
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```go
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import (
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"fmt"
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"github.com/duke-git/lancet/v2/strutil"
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)
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func main() {
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s1 := strutil.KebabCase("Foo Bar-")
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fmt.Println(s1) //foo-bar
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s2 := strutil.KebabCase("foo_Bar")
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fmt.Println(s2) //foo-bar
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s3 := strutil.KebabCase("fooBar")
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fmt.Println(s3) //foo-bar
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s4 := strutil.KebabCase("__FOO_BAR__")
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fmt.Println(s4) //f-o-o-b-a-r
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}
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```
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### <span id="LowerFirst">LowerFirst</span>
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<p>Convert the first character of string to lower case.</p>
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<b>Signature:</b>
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```go
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func LowerFirst(s string) string
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```
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<b>Example:</b>
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```go
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import (
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"fmt"
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"github.com/duke-git/lancet/v2/strutil"
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)
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func main() {
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s1 := strutil.LowerFirst("foo")
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fmt.Println(s1) //foo
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s2 := strutil.LowerFirst("BAR")
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fmt.Println(s2) //bAR
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s3 := strutil.LowerFirst("FOo")
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fmt.Println(s3) //fOo
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s4 := strutil.LowerFirst("fOo大")
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fmt.Println(s4) //fOo大
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}
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```
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### <span id="UpperFirst">UpperFirst</span>
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<p>Convert the first character of string to upper case.</p>
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<b>Signature:</b>
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```go
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func UpperFirst(s string) string
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```
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<b>Example:</b>
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```go
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import (
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"fmt"
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"github.com/duke-git/lancet/v2/strutil"
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)
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func main() {
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s1 := strutil.UpperFirst("foo")
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fmt.Println(s1) //Foo
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s2 := strutil.UpperFirst("bAR")
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fmt.Println(s2) //BAR
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s3 := strutil.UpperFirst("FOo")
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fmt.Println(s3) //FOo
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s4 := strutil.UpperFirst("fOo大")
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fmt.Println(s4) //FOo大
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}
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```
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### <span id="PadEnd">PadEnd</span>
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<p>Pads string on the right side if it's shorter than size.</p>
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<b>Signature:</b>
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```go
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func PadEnd(source string, size int, padStr string) string
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```
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<b>Example:</b>
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```go
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import (
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"fmt"
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"github.com/duke-git/lancet/v2/strutil"
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)
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func main() {
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s1 := strutil.PadEnd("a", 1, "b")
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fmt.Println(s1) //a
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s2 := strutil.PadEnd("a", 2, "b")
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fmt.Println(s2) //ab
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s3 := strutil.PadEnd("abcd", 6, "mno")
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fmt.Println(s3) //abcdmn
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s4 := strutil.PadEnd("abc", 6, "ab")
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fmt.Println(s4) //abcaba
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}
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```
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### <span id="PadStart">PadStart</span>
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<p>Pads string on the left side if it's shorter than size.</p>
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<b>Signature:</b>
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```go
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func PadStart(source string, size int, padStr string) string
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```
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<b>Example:</b>
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```go
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import (
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"fmt"
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"github.com/duke-git/lancet/v2/strutil"
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)
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func main() {
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s1 := strutil.PadStart("a", 1, "b")
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fmt.Println(s1) //a
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s2 := strutil.PadStart("a", 2, "b")
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fmt.Println(s2) //ba
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s3 := strutil.PadStart("abcd", 6, "mno")
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fmt.Println(s3) //mnabcd
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s4 := strutil.PadStart("abc", 6, "ab")
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fmt.Println(s4) //abaabc
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}
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```
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### <span id="Reverse">Reverse</span>
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<p>Return string whose char order is reversed to the given string.</p>
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<b>Signature:</b>
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```go
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func Reverse(s string) string
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```
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<b>Example:</b>
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```go
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import (
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"fmt"
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"github.com/duke-git/lancet/v2/strutil"
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)
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func main() {
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s1 := strutil.ReverseStr("abc")
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fmt.Println(s1) //cba
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s2 := strutil.ReverseStr("12345")
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fmt.Println(s2) //54321
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}
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```
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### <span id="SnakeCase">SnakeCase</span>
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<p>Coverts string to snake_case, non letters and numbers will be ignored.</p>
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<b>Signature:</b>
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```go
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func SnakeCase(s string) string
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```
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<b>Example:</b>
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```go
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import (
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"fmt"
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"github.com/duke-git/lancet/v2/strutil"
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)
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func main() {
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s1 := strutil.SnakeCase("Foo Bar-")
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fmt.Println(s1) //foo_bar
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s2 := strutil.SnakeCase("foo_Bar")
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fmt.Println(s2) //foo_bar
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s3 := strutil.SnakeCase("fooBar")
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fmt.Println(s3) //foo_bar
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s4 := strutil.SnakeCase("__FOO_BAR__")
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fmt.Println(s4) //foo_bar
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s5 := strutil.SnakeCase("Foo-#1😄$_%^&*(1bar")
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fmt.Println(s5) //foo_1_1_bar
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}
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```
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### <span id="UpperSnakeCase">UpperSnakeCase</span>
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<p>Coverts string to upper KEBAB-CASE, non letters and numbers will be ignored.</p>
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<b>Signature:</b>
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```go
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func SnakeCase(s string) string
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```
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<b>Example:</b>
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```go
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import (
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"fmt"
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"github.com/duke-git/lancet/v2/strutil"
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)
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func main() {
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s1 := strutil.UpperSnakeCase("Foo Bar-")
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fmt.Println(s1) //FOO_BAR
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s2 := strutil.UpperSnakeCase("foo_Bar")
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fmt.Println(s2) //FOO_BAR
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s3 := strutil.UpperSnakeCase("fooBar")
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fmt.Println(s3) //FOO_BAR
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s4 := strutil.UpperSnakeCase("__FOO_BAR__")
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fmt.Println(s4) //FOO_BAR
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s5 := strutil.UpperSnakeCase("Foo-#1😄$_%^&*(1bar")
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fmt.Println(s5) //FOO_1_1_BAR
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}
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```
|
|
|
|
|
|
### <span id="SplitEx">SplitEx</span>
|
|
<p>Split a given string whether the result contains empty string.</p>
|
|
|
|
<b>Signature:</b>
|
|
|
|
```go
|
|
func SplitEx(s, sep string, removeEmptyString bool) []string
|
|
```
|
|
<b>Example:</b>
|
|
|
|
```go
|
|
import (
|
|
"fmt"
|
|
"github.com/duke-git/lancet/v2/strutil"
|
|
)
|
|
|
|
func main() {
|
|
arr1 := strutil.SplitEx(" a b c ", "", true)
|
|
fmt.Println(arr1) //[]string{}
|
|
|
|
arr2 := strutil.SplitEx(" a b c ", " ", false)
|
|
fmt.Println(arr2) //[]string{"", "a", "b", "c", ""}
|
|
|
|
arr3 := strutil.SplitEx(" a b c ", " ", true)
|
|
fmt.Println(arr3) //[]string{"a", "b", "c"}
|
|
|
|
arr4 := strutil.SplitEx(" a = b = c = ", " = ", false)
|
|
fmt.Println(arr4) //[]string{" a", "b", "c", ""}
|
|
|
|
arr5 := strutil.SplitEx(" a = b = c = ", " = ", true)
|
|
fmt.Println(arr5) //[]string{" a", "b", "c"}
|
|
}
|
|
```
|
|
|
|
|
|
|
|
### <span id="Substring">Substring</span>
|
|
<p>Returns a substring of the specified length starting at the specified offset position.</p>
|
|
|
|
<b>Signature:</b>
|
|
|
|
```go
|
|
func Substring(s string, offset int, length uint) string
|
|
```
|
|
<b>Example:</b>
|
|
|
|
```go
|
|
import (
|
|
"fmt"
|
|
"github.com/duke-git/lancet/v2/strutil"
|
|
)
|
|
|
|
func main() {
|
|
result1 := strutil.Substring("abcde", 1, 3)
|
|
fmt.Println(result1) //bcd
|
|
|
|
result2 := strutil.Substring("abcde", 1, 5)
|
|
fmt.Println(result2) //bcde
|
|
|
|
result3 := strutil.Substring("abcde", -1, 3)
|
|
fmt.Println(result3) //e
|
|
|
|
result4 := strutil.Substring("abcde", -2, 2)
|
|
fmt.Println(result4) //de
|
|
|
|
result5 := strutil.Substring("abcde", -2, 3)
|
|
fmt.Println(result5) //de
|
|
|
|
result6 := strutil.Substring("你好，欢迎你", 0, 2)
|
|
fmt.Println(result6) //你好
|
|
}
|
|
```
|
|
|
|
### <span id="Wrap">Wrap</span>
|
|
<p>Wrap a string with given string.</p>
|
|
|
|
<b>Signature:</b>
|
|
|
|
```go
|
|
func Wrap(str string, wrapWith string) string
|
|
```
|
|
<b>Example:</b>
|
|
|
|
```go
|
|
import (
|
|
"fmt"
|
|
"github.com/duke-git/lancet/v2/strutil"
|
|
)
|
|
|
|
func main() {
|
|
s1 := strutil.Wrap("ab", "")
|
|
fmt.Println(s1) //ab
|
|
|
|
s2 := strutil.Wrap("", "*")
|
|
fmt.Println(s2) //""
|
|
|
|
s3 := strutil.Wrap("ab", "*")
|
|
fmt.Println(s3) //*ab*
|
|
|
|
s4 := strutil.Wrap("ab", "\"")
|
|
fmt.Println(s4) //\"ab\"
|
|
|
|
s5 := strutil.Wrap("ab", "'")
|
|
fmt.Println(s5) //'ab'
|
|
}
|
|
```
|
|
|
|
|
|
|
|
|
|
### <span id="Wrap">Wrap</span>
|
|
<p>Unwrap a given string from anther string. will change source string.</p>
|
|
|
|
<b>Signature:</b>
|
|
|
|
```go
|
|
func Unwrap(str string, wrapToken string) string
|
|
```
|
|
<b>Example:</b>
|
|
|
|
```go
|
|
import (
|
|
"fmt"
|
|
"github.com/duke-git/lancet/v2/strutil"
|
|
)
|
|
|
|
func main() {
|
|
s1 := strutil.Unwrap("ab", "")
|
|
fmt.Println(s1) //ab
|
|
|
|
s2 := strutil.Unwrap("ab", "*")
|
|
fmt.Println(s2) //ab
|
|
|
|
s3 := strutil.Unwrap("**ab**", "*")
|
|
fmt.Println(s3) //*ab*
|
|
|
|
s4 := strutil.Unwrap("*ab", "*")
|
|
fmt.Println(s4) //*ab
|
|
|
|
s5 := strutil.Unwrap("***", "**")
|
|
fmt.Println(s5) //***
|
|
}
|
|
```
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|