Unity の空のディレクトリの .meta ファイルを消すやつ

remove-empty-dir-meta.go

package main

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

func IsDirEmpty(name string) (bool, error) {
	f, err := os.Open(name)
	if err != nil {
		return false, err
	}
	defer f.Close()

	_, err = f.Readdir(1)

	if err == io.EOF {
		return true, nil
	}
	return false, err
}

func RemoveTail(str string, tail string) string {
	return str[0 : len(str)-len(tail)]
}

func main() {
	if len(os.Args) <= 1 {
		fmt.Fprintln(os.Stderr, "Usage: remove-empty-dir-meta {dir}")
		os.Exit(1)
	}
	root := os.Args[1]
	err := filepath.Walk(root,
		func(path string, info os.FileInfo, err error) error {
			if info.IsDir() {
				return nil
			}

			if strings.HasSuffix(path, ".meta") {
				dir := RemoveTail(path, ".meta")
				ok, err := IsDirEmpty(dir)
				if err == nil && ok {
					os.Remove(dir)
					os.Remove(path)
					fmt.Println("Removed: " + path)
				}
			}

			return nil
		})

	if err != nil {
		fmt.Println(1, err)
	}
}