Golang filepath.Walk sample

walk_sample.go

package main

import (
	"fmt"
	"os"
	"path"
	"path/filepath"
)

func main() {
	gopath := os.Getenv("GOPATH")
	fmt.Printf("[%s/bin]\n", gopath)

	list := getShellScript(gopath)
	for i, p := range list {
		fmt.Printf("[%d:%s===%s]\n", i, path.Dir(p), path.Base(p))
	}
}

func getShellScript(rootpath string) []string {

	list := make([]string, 0, 10)

	err := filepath.Walk(rootpath, func(path string, info os.FileInfo, err error) error {
		if info.IsDir() {
			return nil
		}
		if filepath.Ext(path) == ".sh" {
			list = append(list, path)
		}
		return nil
	})
	if err != nil {
		fmt.Printf("walk error [%v]\n", err)
	}
	return list
}

i think

if info.IsDir() {
         return nil
}

is unnecessary

Nice Stuff, Though noted something, Inside filepath.Walk function, begin by checking error, else you will get panics incase the directory is invalid or not found,

err := filepath.Walk(rootpath, func(path string, info os.FileInfo, err error) error {
if err != nil {
	fmt.Printf("prevent panic by handling failure accessing a path %q: %v\n", path, err)
	return err
}

_**// do stuffs here ..**_
return nil
})

as described here,WalkFunc