441 lines
13 KiB
JavaScript
441 lines
13 KiB
JavaScript
/*
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* Copyright © Jordan Lee, Dave Perrett and Malcolm Jarvis
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* This code is licensed under the GPL version 2.
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* For details, see http://www.gnu.org/licenses/old-licenses/gpl-2.0.html
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*
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* Class Torrent
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*/
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function Torrent(data)
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{
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this.initialize(data);
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}
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/***
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****
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**** Constants
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****
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***/
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// Torrent.fields.status
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Torrent._StatusStopped = 0;
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Torrent._StatusCheckWait = 1;
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Torrent._StatusCheck = 2;
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Torrent._StatusDownloadWait = 3;
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Torrent._StatusDownload = 4;
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Torrent._StatusSeedWait = 5;
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Torrent._StatusSeed = 6;
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// Torrent.fields.seedRatioMode
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Torrent._RatioUseGlobal = 0;
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Torrent._RatioUseLocal = 1;
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Torrent._RatioUnlimited = 2;
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// Torrent.fields.error
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Torrent._ErrNone = 0;
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Torrent._ErrTrackerWarning = 1;
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Torrent._ErrTrackerError = 2;
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Torrent._ErrLocalError = 3;
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// TrackerStats' announceState
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Torrent._TrackerInactive = 0;
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Torrent._TrackerWaiting = 1;
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Torrent._TrackerQueued = 2;
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Torrent._TrackerActive = 3;
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// fields whose values never change and are always known
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Torrent._StaticFields = [
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'hashString', 'id' ];
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// fields whose values never change and are known upon constructon OR
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// when a magnet torrent finishes downloading its metadata
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Torrent._MetaDataFields = [
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'addedDate', 'comment', 'creator', 'dateCreated',
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'isPrivate', 'name', 'totalSize', 'pieceCount', 'pieceSize' ];
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// torrent fields whose values change all the time
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Torrent._DynamicFields = [
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'desiredAvailable', 'downloadDir', 'downloadedEver', 'error',
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'errorString', 'eta', 'haveUnchecked', 'haveValid', 'isFinished',
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'leftUntilDone', 'metadataPercentComplete', 'peers', 'peersConnected',
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'peersGettingFromUs', 'peersSendingToUs', 'queuePosition',
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'rateDownload', 'rateUpload', 'recheckProgress', 'seedRatioLimit',
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'seedRatioMode', 'sizeWhenDone', 'status', 'trackerStats',
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'uploadedEver', 'uploadRatio', 'webseedsSendingToUs' ];
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/***
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****
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**** Methods
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****
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***/
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Torrent.prototype =
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{
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initialize: function(data)
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{
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this.fields = {};
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this._files = [];
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// these fields are set in the ctor and never change
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for (var i=0, key; key=Torrent._StaticFields[i]; ++i) {
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if (key in data) {
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this.fields[key] = data[key];
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}
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}
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this.initMetaData(data);
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this._trackerStats = this.buildTrackerStats(data.trackerStats);
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this.refresh(data);
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},
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buildTrackerStats: function(trackerStats) {
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var announce = [];
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var result = [];
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for (var i=0, tracker; tracker=trackerStats[i]; ++i) {
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var tier = result[tracker.tier] || [];
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tier.push(tracker);
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result[tracker.tier] = tier;
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announce.push(tracker.announce);
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}
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this.fields.collatedTrackers = announce.join('\t');
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return result;
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},
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initMetaData: function(data) {
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var f = this.fields;
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var changed = false;
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// populate the metadata fields
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for (var i=0, key; key=Torrent._MetaDataFields[i]; ++i) {
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if (key in data) {
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if (f[key] !== data[key]) {
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f[key] = data[key];
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if (key === 'name')
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f.collatedName = data.name.toLowerCase();
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changed = true;
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}
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}
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}
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// populate the files array
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if (data.files) {
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for (var i=0, row; row=data.files[i]; ++i) {
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this._files[i] = {
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'index': i,
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'torrent': this,
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'length': row.length,
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'name': row.name
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};
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}
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}
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return changed;
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},
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refreshMetaData: function(data)
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{
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var changed = this.initMetaData(data);
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if (changed)
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this.fireDataChanged();
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return changed;
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},
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refresh: function(data)
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{
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var changed = false;
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// FIXME: unnecessary coupling... this should be handled by transmission.js
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if (this.needsMetaData() && (data.metadataPercentComplete >= 1))
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changed |= transmission.refreshMetaData([ this.getId() ]);
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var f = this.fields;
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// refresh the dynamic fields
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for (var i=0, key; key=Torrent._DynamicFields[i]; ++i) {
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if (key in data) {
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if (f[key] !== data[key]) {
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f[key] = data[key];
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changed = true;
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}
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}
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}
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this._trackerStats = this.buildTrackerStats(data.trackerStats);
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if (data.fileStats)
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changed |= this.refreshFiles(data);
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if (changed)
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this.fireDataChanged();
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},
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refreshFiles: function(data) {
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var changed = false;
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for (var i=0; i<data.fileStats.length; ++i) {
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var src = data.fileStats[i];
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var tgt = this._files[i];
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if (!tgt) {
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changed = true;
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tgt = this._files[i] = { };
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}
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if (tgt.wanted !== src.wanted) {
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tgt.wanted = src.wanted;
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changed = true;
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}
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if (tgt.priority !== src.priority) {
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tgt.priority = src.priority;
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changed = true;
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}
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if (tgt.bytesCompleted !== src.bytesCompleted) {
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tgt.bytesCompleted = src.bytesCompleted;
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changed = true;
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}
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}
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return changed;
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},
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fireDataChanged: function()
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{
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$(this).trigger('dataChanged');
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},
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/****
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*****
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****/
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// simple accessors
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getCollatedName: function() { return this.fields.collatedName; },
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getCollatedTrackers: function() { return this.fields.collatedTrackers; },
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getComment: function() { return this.fields.comment; },
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getCreator: function() { return this.fields.creator; },
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getDateAdded: function() { return this.fields.addedDate; },
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getDateCreated: function() { return this.fields.dateCreated; },
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getDesiredAvailable: function() { return this.fields.desiredAvailable; },
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getDownloadDir: function() { return this.fields.downloadDir; },
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getDownloadSpeed: function() { return this.fields.rateDownload; },
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getDownloadedEver: function() { return this.fields.downloadedEver; },
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getError: function() { return this.fields.error; },
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getErrorString: function() { return this.fields.errorString; },
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getETA: function() { return this.fields.eta; },
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getHashString: function() { return this.fields.hashString; },
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getHaveValid: function() { return this.fields.haveValid; },
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getHave: function() { return this.getHaveValid() + this.fields.haveUnchecked; },
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getId: function() { return this.fields.id; },
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getLeftUntilDone: function() { return this.fields.leftUntilDone; },
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getMetadataPercentComplete: function() { return this.fields.metadataPercentComplete; },
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getName: function() { return this.fields.name; },
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getPeers: function() { return this.fields.peers; },
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getPeersConnected: function() { return this.fields.peersConnected; },
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getPeersGettingFromUs: function() { return this.fields.peersGettingFromUs; },
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getPeersSendingToUs: function() { return this.fields.peersSendingToUs; },
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getPieceCount: function() { return this.fields.pieceCount; },
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getPieceCount: function() { return this.fields.pieceCount; },
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getPieceSize: function() { return this.fields.pieceSize; },
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getPrivateFlag: function() { return this.fields.isPrivate; },
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getQueuePosition: function() { return this.fields.queuePosition; },
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getRecheckProgress: function() { return this.fields.recheckProgress; },
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getSeedRatioLimit: function() { return this.fields.seedRatioLimit; },
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getSeedRatioMode: function() { return this.fields.seedRatioMode; },
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getSizeWhenDone: function() { return this.fields.sizeWhenDone; },
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getStatus: function() { return this.fields.status; },
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getTotalSize: function() { return this.fields.totalSize; },
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getUploadSpeed: function() { return this.fields.rateUpload; },
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getUploadRatio: function() { return this.fields.uploadRatio; },
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getUploadedEver: function() { return this.fields.uploadedEver; },
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getWebseedsSendingToUs: function() { return this.fields.webseedsSendingToUs; },
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isFinished: function() { return this.fields.isFinished; },
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// derived accessors
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isSeeding: function() { return this.getStatus() === Torrent._StatusSeed; },
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isStopped: function() { return this.getStatus() === Torrent._StatusStopped; },
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isChecking: function() { return this.getStatus() === Torrent._StatusCheck; },
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isDownloading: function() { return this.getStatus() === Torrent._StatusDownload; },
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isDone: function() { return this.getLeftUntilDone() < 1; },
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needsMetaData: function(){ return this.getMetadataPercentComplete() < 1; },
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getActivity: function() { return this.getDownloadSpeed() + this.getUploadSpeed(); },
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getPercentDoneStr: function() { return Transmission.fmt.percentString(100*this.getPercentDone()); },
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getPercentDone: function() {
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var finalSize = this.getSizeWhenDone();
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if (!finalSize) return 1.0;
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var left = this.getLeftUntilDone();
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if (!left) return 1.0;
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return (finalSize - left) / finalSize;
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},
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getStateString: function() {
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switch(this.getStatus()) {
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case Torrent._StatusStopped: return this.isFinished() ? 'Seeding complete' : 'Paused';
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case Torrent._StatusCheckWait: return 'Queued for verification';
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case Torrent._StatusCheck: return 'Verifying local data';
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case Torrent._StatusDownloadWait: return 'Queued for download';
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case Torrent._StatusDownload: return 'Downloading';
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case Torrent._StatusSeedWait: return 'Queued for seeding';
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case Torrent._StatusSeed: return 'Seeding';
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default: return 'error';
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}
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},
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trackerStats: function() { return this._trackerStats; },
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seedRatioLimit: function(controller){
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switch(this.getSeedRatioMode()) {
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case Torrent._RatioUseGlobal: return controller.seedRatioLimit();
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case Torrent._RatioUseLocal: return this.getSeedRatioLimit();
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default: return -1;
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}
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},
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getErrorMessage: function() {
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var str = this.getErrorString();
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switch(this.getError()) {
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case Torrent._ErrTrackerWarning:
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return 'Tracker returned a warning: ' + str;
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case Torrent._ErrTrackerError:
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return 'Tracker returned an error: ' + str;
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case Torrent._ErrLocalError:
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return 'Error: ' + str;
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default:
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return null;
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}
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},
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/****
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*****
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****/
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testState: function(state)
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{
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var s = this.getStatus();
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switch(state)
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{
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case Prefs._FilterActive:
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return this.getPeersGettingFromUs() > 0
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|| this.getPeersSendingToUs() > 0
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|| this.getWebseedsSendingToUs() > 0
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|| this.isChecking();
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case Prefs._FilterSeeding:
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return (s === Torrent._StatusSeed)
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|| (s === Torrent._StatusSeedWait);
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case Prefs._FilterDownloading:
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return (s === Torrent._StatusDownload)
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|| (s === Torrent._StatusDownloadWait);
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case Prefs._FilterPaused:
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return this.isStopped();
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case Prefs._FilterFinished:
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return this.isFinished();
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default:
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return true;
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}
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},
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/**
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* @param filter one of Prefs._Filter*
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* @param search substring to look for, or null
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* @return true if it passes the test, false if it fails
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*/
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test: function(state, search, tracker)
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{
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// flter by state...
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var pass = this.testState(state);
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// maybe filter by text...
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if (pass && search && search.length)
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pass = this.getCollatedName().indexOf(search.toLowerCase()) !== -1;
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// maybe filter by tracker...
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if (pass && tracker && tracker.length)
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pass = this.getCollatedTrackers().indexOf(tracker) !== -1;
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return pass;
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}
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};
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/***
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****
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**** SORTING
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****
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***/
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Torrent.compareById = function(ta, tb)
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{
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return ta.getId() - tb.getId();
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};
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Torrent.compareByName = function(ta, tb)
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{
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return ta.getCollatedName().compareTo(tb.getCollatedName())
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|| Torrent.compareById(ta, tb);
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};
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Torrent.compareByQueue = function(ta, tb)
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{
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return ta.getQueuePosition() - tb.getQueuePosition();
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};
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Torrent.compareByAge = function(ta, tb)
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{
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var a = ta.getDateAdded();
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var b = tb.getDateAdded();
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return (b - a) || Torrent.compareByQueue(ta, tb);
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};
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Torrent.compareByState = function(ta, tb)
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{
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var a = ta.getStatus();
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var b = tb.getStatus();
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return (b - a) || Torrent.compareByQueue(ta, tb);
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};
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Torrent.compareByActivity = function(ta, tb)
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{
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var a = ta.getActivity();
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var b = tb.getActivity();
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return (b - a) || Torrent.compareByState(ta, tb);
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};
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Torrent.compareByRatio = function(ta, tb)
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{
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var a = Math.ratio(ta.getUploadedEver(), ta.getDownloadedEver());
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var b = Math.ratio(tb.getUploadedEver(), tb.getDownloadedEver());
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return (a - b) || Torrent.compareByState(ta, tb);
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};
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Torrent.compareByProgress = function(ta, tb)
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{
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var a = ta.getPercentDone();
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var b = tb.getPercentDone();
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return (a - b) || Torrent.compareByRatio(ta, tb);
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};
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/**
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* @param torrents an array of Torrent objects
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* @param sortMethod one of Prefs._SortBy*
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* @param sortDirection Prefs._SortAscending or Prefs._SortDescending
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*/
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Torrent.sortTorrents = function(torrents, sortMethod, sortDirection)
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{
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switch(sortMethod)
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{
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case Prefs._SortByActivity:
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torrents.sort(this.compareByActivity);
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break;
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case Prefs._SortByAge:
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torrents.sort(this.compareByAge);
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break;
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case Prefs._SortByQueue:
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torrents.sort(this.compareByQueue);
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break;
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case Prefs._SortByProgress:
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torrents.sort(this.compareByProgress);
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break;
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case Prefs._SortByState:
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torrents.sort(this.compareByState);
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break;
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case Prefs._SortByRatio:
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torrents.sort(this.compareByRatio);
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break;
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default:
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torrents.sort(this.compareByName);
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break;
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}
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if (sortDirection === Prefs._SortDescending)
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torrents.reverse();
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return torrents;
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};
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