func (p *parser) printUsage(w io.Writer) {
fmt.Fprintf(w, "Usage:\n %s", p.program)
if p.hasOptions() {
fmt.Fprintf(w, " [OPTIONS...]")
}
for _, arg := range p.posArgs {
fs := func() string {
switch arg.arity {
case arity{0, 1}:
return "[%s]"
case arity{1, infArity}:
return "%s..."
case arity{0, infArity}:
return "[%s...]"
default:
return "<%s>"
}
}()
// if arg.arity != arity{1,1} {
fmt.Fprintf(w, " "+fs, arg.name)
// }
// if arg.arity > 1 {
// for range iter.N(int(arg.arity - 1)) {
// fmt.Fprintf(w, " "+fs, arg.name)
// }
// }
}
fmt.Fprintf(w, "\n")
if p.description != "" {
fmt.Fprintf(w, "\n%s\n", missinggo.Unchomp(p.description))
}
if awd := p.posWithHelp(); len(awd) != 0 {
fmt.Fprintf(w, "Arguments:\n")
tw := newUsageTabwriter(w)
for _, a := range awd {
fmt.Fprintf(tw, " %s\t(%s)\t%s\n", a.name, a.value.Type(), a.help)
}
tw.Flush()
}
var opts []arg
for _, v := range p.flags {
opts = append(opts, v)
}
slices.Sort(opts, func(left, right arg) bool {
return left.name < right.name
})
writeOptionUsage(w, opts)
}
// This is a helper that sets Files and Pieces from a root path and its
// children.
func (info *Info) BuildFromFilePath(root string) (err error) {
info.Name = filepath.Base(root)
info.Files = nil
err = filepath.Walk(root, func(path string, fi os.FileInfo, err error) error {
if err != nil {
return err
}
if fi.IsDir() {
// Directories are implicit in torrent files.
return nil
} else if path == root {
// The root is a file.
info.Length = fi.Size()
return nil
}
relPath, err := filepath.Rel(root, path)
log.Println(relPath, err)
if err != nil {
return fmt.Errorf("error getting relative path: %s", err)
}
info.Files = append(info.Files, FileInfo{
Path: strings.Split(relPath, string(filepath.Separator)),
Length: fi.Size(),
})
return nil
})
if err != nil {
return
}
slices.Sort(info.Files, func(l, r FileInfo) bool {
return strings.Join(l.Path, "/") < strings.Join(r.Path, "/")
})
err = info.GeneratePieces(func(fi FileInfo) (io.ReadCloser, error) {
return os.Open(filepath.Join(root, strings.Join(fi.Path, string(filepath.Separator))))
})
if err != nil {
err = fmt.Errorf("error generating pieces: %s", err)
}
return
}
func (t *Torrent) writeStatus(w io.Writer, cl *Client) {
fmt.Fprintf(w, "Infohash: %x\n", t.infoHash)
fmt.Fprintf(w, "Metadata length: %d\n", t.metadataSize())
if !t.haveInfo() {
fmt.Fprintf(w, "Metadata have: ")
for _, h := range t.metadataCompletedChunks {
fmt.Fprintf(w, "%c", func() rune {
if h {
return 'H'
} else {
return '.'
}
}())
}
fmt.Fprintln(w)
}
fmt.Fprintf(w, "Piece length: %s\n", func() string {
if t.haveInfo() {
return fmt.Sprint(t.usualPieceSize())
} else {
return "?"
}
}())
if t.haveInfo() {
fmt.Fprintf(w, "Num Pieces: %d\n", t.numPieces())
fmt.Fprint(w, "Piece States:")
for _, psr := range t.pieceStateRuns() {
w.Write([]byte(" "))
w.Write([]byte(pieceStateRunStatusChars(psr)))
}
fmt.Fprintln(w)
}
fmt.Fprintf(w, "Reader Pieces:")
t.forReaderOffsetPieces(func(begin, end int) (again bool) {
fmt.Fprintf(w, " %d:%d", begin, end)
return true
})
fmt.Fprintln(w)
fmt.Fprintf(w, "Trackers:\n")
func() {
tw := tabwriter.NewWriter(w, 0, 0, 2, ' ', 0)
fmt.Fprintf(tw, " URL\tNext announce\tLast announce\n")
for _, ta := range slices.Sort(slices.FromMapElems(t.trackerAnnouncers), func(l, r *trackerScraper) bool {
return l.url < r.url
}).([]*trackerScraper) {
fmt.Fprintf(tw, " %s\n", ta.statusLine())
}
tw.Flush()
}()
fmt.Fprintf(w, "DHT Announces: %d\n", t.numDHTAnnounces)
fmt.Fprintf(w, "Pending peers: %d\n", len(t.peers))
fmt.Fprintf(w, "Half open: %d\n", len(t.halfOpen))
fmt.Fprintf(w, "Active peers: %d\n", len(t.conns))
slices.Sort(t.conns, worseConn)
for i, c := range t.conns {
fmt.Fprintf(w, "%2d. ", i+1)
c.WriteStatus(w, t)
}
}