63 lines
1.0 KiB
Go
63 lines
1.0 KiB
Go
package main
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import "fmt"
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import "crypto/sha256"
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import "io"
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import "log"
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import "os"
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import "path/filepath"
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import "sync"
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func sha256File(path string) (string, error) {
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f, err := os.Open(path)
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if err != nil {
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return "", err
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}
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defer f.Close()
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h := sha256.New()
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io.Copy(h, f)
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return fmt.Sprintf("SHA256 (%s) = %x", path, h.Sum(nil)), nil
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}
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func main() {
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if len(os.Args) < 2 {
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log.Fatalln("Usage shadir file")
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}
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var wg sync.WaitGroup
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chan_hash, chan_path := make(chan string), make(chan string)
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for i := 0; i < 100; i++ {
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go func() {
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for {
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path := <-chan_path
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if h, err := sha256File(path); err != nil {
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wg.Done()
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log.Print("Error "+path, err)
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} else {
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chan_hash <- h
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}
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}
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}()
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}
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go func() {
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for {
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fmt.Println(<-chan_hash)
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wg.Done()
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}
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}()
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err := filepath.Walk(os.Args[1], func(path string, info os.FileInfo, err error) error {
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if err != nil && !info.IsDir() {
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wg.Add(1)
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chan_path <- path
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}
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return err
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})
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if err != nil {
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log.Fatalln(err)
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}
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wg.Wait()
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}
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