110 lines
2.2 KiB
Go
110 lines
2.2 KiB
Go
package main
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import (
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"flag"
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"fmt"
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"log"
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"os"
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"path"
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"regexp"
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"strings"
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"sync"
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)
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func init() {
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log.SetFlags(log.Lmicroseconds | log.Lshortfile)
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}
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func main() {
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flag.Parse()
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var wg sync.WaitGroup
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var renamedFiles sync.Map
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extensionRegex := regexp.MustCompile(`\.[a-zA-Z0-9]+$`)
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wg.Wait()
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wg = sync.WaitGroup{}
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for _, file := range flag.Args() {
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wg.Add(1)
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go func(file string) {
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defer wg.Done()
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file = path.Clean(file)
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log.Printf("Checking file %s", file)
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if !DoesFileExist(file) {
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log.Printf("File %s does not exist", file)
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return
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}
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info, err := os.Stat(file)
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if info == nil {
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log.Printf("Error checking file %s: %s", file, err)
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return
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}
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if info.IsDir() {
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log.Printf("File %s is a directory", file)
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return
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}
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modtime := info.ModTime()
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modtimeString := modtime.Local().Format("2006-01-02T15-04-05")
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newFile := modtimeString
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res := extensionRegex.FindAllString(file, -1)
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if len(res) == 0 {
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log.Printf("No extension found for file %s", file)
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return
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}
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extension := res[0]
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dir := path.Dir(file)
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newFile = fmt.Sprintf("%s/%s%s", dir, newFile, extension)
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newFile = path.Clean(newFile)
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newFile = strings.TrimRight(newFile, ".bak")
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log.Printf("New file name for %s: %s", file, newFile)
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if DoesFileExist(newFile) {
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log.Printf("File %s already exists", newFile)
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return
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}
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_, ok := renamedFiles.Load(newFile)
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if ok {
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log.Printf("File %s already renamed", newFile)
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return
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}
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if file == newFile {
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log.Printf("File %s already has the correct name", file)
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return
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}
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renamedFiles.Store(newFile, struct{}{})
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log.Printf("%s -> %s", file, newFile)
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err = os.Rename(file, newFile)
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if err != nil {
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log.Printf("Error renaming file %s to %s: %s", file, newFile, err)
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return
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}
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}(file)
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}
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wg.Wait()
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}
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func DoesFileExist(input string) bool {
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if input == "" {
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return false
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}
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file, err := os.Open(input)
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if err != nil {
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if os.IsNotExist(err) {
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return false
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} else {
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log.Printf("Error checking if file exists: %s", err)
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file.Close()
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return true
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}
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}
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file.Close()
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return true
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}
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