/
main.go
55 lines (50 loc) · 1.03 KB
/
main.go
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package main
import (
"encoding/hex"
"encoding/json"
"fmt"
"log"
"os"
"github.com/anacrolix/tagflag"
"github.com/bradfitz/iter"
"github.com/anacrolix/torrent/metainfo"
)
var flags struct {
JustName bool
PieceHashes bool
tagflag.StartPos
TorrentFiles []string
}
func main() {
tagflag.Parse(&flags)
for _, filename := range flags.TorrentFiles {
metainfo, err := metainfo.LoadFromFile(filename)
if err != nil {
log.Print(err)
continue
}
info := &metainfo.Info.Info
if flags.JustName {
fmt.Printf("%s\n", metainfo.Info.Name)
continue
}
d := map[string]interface{}{
"Name": info.Name,
"NumPieces": info.NumPieces(),
"PieceLength": info.PieceLength,
}
if flags.PieceHashes {
d["PieceHashes"] = func() (ret []string) {
for i := range iter.N(info.NumPieces()) {
ret = append(ret, hex.EncodeToString(info.Pieces[i*20:(i+1)*20]))
}
return
}()
}
b, _ := json.MarshalIndent(d, "", " ")
os.Stdout.Write(b)
}
if !flags.JustName {
os.Stdout.WriteString("\n")
}
}