4 "github.com/anacrolix/missinggo/pubsub"
6 "github.com/anacrolix/torrent/metainfo"
9 // This file contains Torrent, until I decide where the private, lower-case
10 // "torrent" type belongs. That type is currently mostly in torrent.go.
12 // The public handle to a live torrent within a Client.
18 // The torrent's infohash. This is fixed and cannot change. It uniquely
19 // identifies a torrent.
20 func (t Torrent) InfoHash() InfoHash {
21 return t.torrent.InfoHash
24 // Closed when the info (.Info()) for the torrent has become available. Using
25 // features of Torrent that require the info before it is available will have
26 // undefined behaviour.
27 func (t Torrent) GotInfo() <-chan struct{} {
28 return t.torrent.gotMetainfo
31 // Returns the metainfo info dictionary, or nil if it's not yet available.
32 func (t Torrent) Info() *metainfo.Info {
36 // Returns a Reader bound to the torrent's data. All read calls block until
37 // the data requested is actually available. Priorities are set to ensure the
38 // data requested will be downloaded as soon as possible.
39 func (t Torrent) NewReader() (ret *Reader) {
42 readahead: 5 * 1024 * 1024,
48 // Returns the state of pieces of the torrent. They are grouped into runs of
49 // same state. The sum of the state run lengths is the number of pieces
51 func (t Torrent) PieceStateRuns() []PieceStateRun {
52 t.torrent.stateMu.Lock()
53 defer t.torrent.stateMu.Unlock()
54 return t.torrent.pieceStateRuns()
57 // The number of pieces in the torrent. This requires that the info has been
59 func (t Torrent) NumPieces() int {
60 return t.torrent.numPieces()
63 // Drop the torrent from the client, and close it.
64 func (t Torrent) Drop() {
66 t.cl.dropTorrent(t.torrent.InfoHash)
70 // Number of bytes of the entire torrent we have completed.
71 func (t Torrent) BytesCompleted() int64 {
73 defer t.cl.mu.RUnlock()
74 return t.torrent.bytesCompleted()
77 // The subscription emits as (int) the index of pieces as their state changes.
78 // A state change is when the PieceState for a piece alters in value.
79 func (t Torrent) SubscribePieceStateChanges() *pubsub.Subscription {
80 return t.torrent.pieceStateChanges.Subscribe()
83 // Returns true if the torrent is currently being seeded. This occurs when the
84 // client is willing to upload without wanting anything in return.
85 func (t Torrent) Seeding() bool {
87 defer t.cl.mu.Unlock()
88 return t.cl.seeding(t.torrent)
91 // Clobbers the torrent display name. The display name is used as the torrent
92 // name if the metainfo is not available.
93 func (t Torrent) SetDisplayName(dn string) {
95 defer t.cl.mu.Unlock()
96 t.torrent.setDisplayName(dn)
99 // The current working name for the torrent. Either the name in the info dict,
100 // or a display name given such as by the dn value in a magnet link, or "".
101 func (t Torrent) Name() string {
103 defer t.cl.mu.Unlock()
104 return t.torrent.Name()
107 func (t Torrent) Length() int64 {
110 return t.torrent.length
116 // Returns a run-time generated metainfo for the torrent that includes the
117 // info bytes and announce-list as currently known to the client.
118 func (t Torrent) MetaInfo() *metainfo.MetaInfo {
120 defer t.cl.mu.Unlock()
121 return t.torrent.MetaInfo()
124 func (t Torrent) addReader(r *Reader) {
126 defer t.cl.mu.Unlock()
127 if t.torrent.readers == nil {
128 t.torrent.readers = make(map[*Reader]struct{})
130 t.torrent.readers[r] = struct{}{}
131 t.torrent.readersChanged(t.cl)
134 func (t Torrent) deleteReader(r *Reader) {
136 defer t.cl.mu.Unlock()
137 delete(t.torrent.readers, r)
138 t.torrent.readersChanged(t.cl)
141 func (t Torrent) DownloadPieces(begin, end int) {
143 defer t.cl.mu.Unlock()
144 for i := begin; i < end; i++ {
145 t.torrent.pendPiece(i, t.cl)