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package main
import (
"fmt"
"io"
"io/ioutil"
"os"
"github.com/docker/docker/pkg/tarsum"
)
func main() {
ts, err := tarsum.NewTarSum(os.Stdin, true, tarsum.Version1)
if err != nil {
fmt.Println(err)
os.Exit(1)
}
if _, err = io.Copy(ioutil.Discard, ts); err != nil {
fmt.Println(err)
os.Exit(1)
}
fmt.Println(ts.Sum(nil))
}
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