syncthing/integration/md5r.go
2014-01-20 07:38:57 +01:00

60 lines
775 B
Go

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