Go language obtains the name, prefix and suffix of the file


Example code:

package main
import (
func main() {
    filename := "device/sdk/CMakeLists.txt"
    filenameall := path.Base(filename)    
    filesuffix := path.Ext(filename)
    fileprefix := filenameall[0:len(filenameall) - len(filesuffix)]
    //fileprefix, err := strings.TrimSuffix(filenameall, filesuffix)
    fmt.Println("file name:", filenameall)
    fmt.Println("file prefix:", fileprefix)
    fmt.Println("file suffix:", filesuffix)

Execution results:

file name: CMakeLists.txt

file prefix: CMakeLists

file suffix: .txt

path.Base(filename) Gets the file name that does not contain a directory

path.Ext(filename) Get file suffix

The file prefix can be obtained by slicing:

fileprefix := filenameall[0:len(filenameall) - len(filesuffix)]

You can also use strings. Trimsuffix() to get:

import "strings"
fileprefix, err := strings.TrimSuffix(filenameall, filesuffix)

Supplement: golang judges prefix, suffix and inclusion relationship

Hasprefix determines whether the string s starts with prefix:

strings.HasPrefix(s, prefix string) bool

Hassuffix determines whether the string s ends with suffix:

strings.HasSuffix(s, suffix string) bool

String containment relationship

Contains determines whether the string s contains substr:

strings.Contains(s, substr string) bool

Test source code:

package main
import (
func main() {
        var str1 string = "This is an example of a string"
        var str2 string = "this is an "
        var str3 string = " of a string"
        fmt.Println(strings.HasPrefix(str1, str2))
        fmt.Println(strings.HasSuffix(str1, str3))

Operation results:

[[email protected] golang]# go run zzz.go



The above is my personal experience. I hope I can give you a reference, and I hope you can support developpaer. If you have any mistakes or don’t consider completely, please don’t hesitate to comment.

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