60 lines
775 B
Go
60 lines
775 B
Go
package main
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import (
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"crypto/md5"
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"flag"
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"fmt"
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"io"
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"os"
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"path/filepath"
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)
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func main() {
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flag.Parse()
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args := flag.Args()
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if len(args) == 0 {
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args = []string{"."}
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}
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for _, path := range args {
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err := filepath.Walk(path, walker)
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if err != nil {
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fmt.Fprintln(os.Stderr, err)
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os.Exit(1)
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}
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}
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}
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func walker(path string, info os.FileInfo, err error) error {
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if err != nil {
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return err
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}
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if !info.IsDir() {
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sum, err := md5file(path)
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if err != nil {
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return err
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}
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fmt.Printf("%s %s\n", sum, path)
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}
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return nil
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}
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func md5file(fname string) (hash string, err error) {
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f, err := os.Open(fname)
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if err != nil {
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return
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}
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defer f.Close()
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h := md5.New()
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io.Copy(h, f)
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hb := h.Sum(nil)
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hash = fmt.Sprintf("%x", hb)
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return
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}
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