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Merge pull request #2 from BugKun/master
修复:多次实例化构造函数时,歌词的中间变量会变成最后一个,导致无法实现双语歌词
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Original file line number | Diff line number | Diff line change |
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@@ -1,152 +1,153 @@ | ||
(function(root, factory) { | ||
'use strict'; | ||
if (typeof define === 'function' && define.amd) { | ||
// AMD support. | ||
define([], factory); | ||
} else if (typeof exports === 'object') { | ||
// NodeJS support. | ||
module.exports = factory(); | ||
} else { | ||
// Browser global support. | ||
root.Lyrics = factory(); | ||
} | ||
'use strict'; | ||
if (typeof define === 'function' && define.amd) { | ||
// AMD support. | ||
define([], factory); | ||
} else if (typeof exports === 'object') { | ||
// NodeJS support. | ||
module.exports = factory(); | ||
} else { | ||
// Browser global support. | ||
root.Lyrics = factory(); | ||
} | ||
}(this, function() { | ||
'use strict'; | ||
var Lyrics = function(text_lrc){ | ||
/* Private */ | ||
var _proto = Lyrics.prototype; | ||
var timestamp_offset = 0; | ||
var lyrics_all = undefined; | ||
var meta_info = undefined; | ||
var setTimestampOffset = function(offset){ | ||
timestamp_offset = isNaN(offset) ? 0 : Number(offset) / 1000; | ||
return Number(offset); | ||
} | ||
var isEmpty = function(obj) { | ||
for(var prop in obj) { | ||
if(obj.hasOwnProperty(prop)) { | ||
return false; | ||
} | ||
} | ||
return true; | ||
} | ||
var ID_TAGS = [ | ||
{name:'artist',id:'ar'}, | ||
{name:'album',id:'al'}, | ||
{name:'title',id:'ti'}, | ||
{name:'author',id:'au'}, | ||
{name:'length',id:'length'}, | ||
{name:'by',id:'by'}, | ||
{name:'offset',id:'offset', handler:setTimestampOffset}, | ||
{name:'createdBy',id:'re'}, | ||
{name:'createdByVersion',id:'ve'}, | ||
]; | ||
'use strict'; | ||
var Lyrics = function (text_lrc) { | ||
/* Private */ | ||
this.timestamp_offset = 0; | ||
this.lyrics_all = undefined; | ||
this.meta_info = undefined; | ||
this.ID_TAGS = [ | ||
{name: 'artist', id: 'ar'}, | ||
{name: 'album', id: 'al'}, | ||
{name: 'title', id: 'ti'}, | ||
{name: 'author', id: 'au'}, | ||
{name: 'length', id: 'length'}, | ||
{name: 'by', id: 'by'}, | ||
{name: 'offset', id: 'offset', handler: this.setTimestampOffset}, | ||
{name: 'createdBy', id: 're'}, | ||
{name: 'createdByVersion', id: 've'} | ||
]; | ||
|
||
_proto.load = function(text_lrc){ | ||
lyrics_all = new Array(); | ||
meta_info = new Object(); | ||
timestamp_offset = 0; | ||
/* Initialization */ | ||
for (var i = 0; i < this.ID_TAGS.length; i++) { | ||
this.ID_TAGS[i].re = new RegExp('\\[' + this.ID_TAGS[i].id + ':(.*)\\]$', 'g'); | ||
} | ||
if (text_lrc) { | ||
this.load(text_lrc); | ||
} | ||
}; | ||
|
||
var lines_all = String(text_lrc).split('\n'); | ||
for (var i = 0; i < lines_all.length; i++) { | ||
var line = lines_all[i].replace(/(^\s*)|(\s*$)/g,''); | ||
if (!line) { | ||
continue; | ||
} | ||
|
||
//Parse ID Tags | ||
var is_id_tag = false; | ||
for (var j = 0; j < ID_TAGS.length; j++) { | ||
var match = ID_TAGS[j].re.exec(line); | ||
if (!match || match.length < 2) { | ||
continue; | ||
} | ||
Lyrics.prototype = { | ||
constructor: Lyrics, | ||
load: function (text_lrc) { | ||
this.lyrics_all = new Array(); | ||
this.meta_info = new Object(); | ||
this.timestamp_offset = 0; | ||
|
||
is_id_tag = true; | ||
var value = match[1].replace(/(^\s*)|(\s*$)/g,''); | ||
if (typeof ID_TAGS[j].handler == 'function') { | ||
meta_info[String(ID_TAGS[j].name)] = ID_TAGS[j].handler.call(this, value); | ||
} else { | ||
meta_info[String(ID_TAGS[j].name)] = String(value); | ||
} | ||
} | ||
if (is_id_tag) { | ||
continue; | ||
} | ||
var lines_all = String(text_lrc).split('\n'); | ||
for (var i = 0; i < lines_all.length; i++) { | ||
var line = lines_all[i].replace(/(^\s*)|(\s*$)/g, ''); | ||
if (!line) { | ||
continue; | ||
} | ||
|
||
//Parse lyric | ||
var timestamp_all = Array(); | ||
while (true) { | ||
var match = /^(\[\d+:\d+(.\d+)?\])(.*)/g.exec(line); | ||
if (match) { | ||
timestamp_all.push(match[1]); | ||
line = match[match.length-1].replace(/(^\s*)|(\s*$)/g,''); | ||
} else { | ||
break; | ||
} | ||
} | ||
for (var j = 0; j < timestamp_all.length; j++) { | ||
var ts_match = /^\[(\d{1,2}):(\d|[0-5]\d)(\.(\d+))?\]$/g.exec(timestamp_all[j]); | ||
if (ts_match) { | ||
lyrics_all.push({ | ||
timestamp:Number(ts_match[1])*60 + Number(ts_match[2]) + (ts_match[4] ? Number('0.'+ts_match[4]) : 0), | ||
text:line | ||
}); | ||
} | ||
} | ||
} | ||
//Parse ID Tags | ||
var is_id_tag = false; | ||
for (var j = 0; j < this.ID_TAGS.length; j++) { | ||
var match = this.ID_TAGS[j].re.exec(line); | ||
if (!match || match.length < 2) { | ||
continue; | ||
} | ||
|
||
lyrics_all.sort(function(a,b){ | ||
return (a.timestamp > b.timestamp ? 1 : -1); | ||
}); | ||
if (!lyrics_all.length) { | ||
lyrics_all = undefined; | ||
} | ||
if (isEmpty(meta_info)) { | ||
meta_info = undefined; | ||
} | ||
return (lyrics_all !== undefined || meta_info !== undefined) ? true : false; | ||
} | ||
is_id_tag = true; | ||
var value = match[1].replace(/(^\s*)|(\s*$)/g, ''); | ||
if (typeof this.ID_TAGS[j].handler == 'function') { | ||
this.meta_info[String(this.ID_TAGS[j].name)] = this.ID_TAGS[j].handler.call(this, value); | ||
} else { | ||
this.meta_info[String(this.ID_TAGS[j].name)] = String(value); | ||
} | ||
} | ||
if (is_id_tag) { | ||
continue; | ||
} | ||
|
||
/* Public */ | ||
_proto.getLyrics = function(){ | ||
return lyrics_all; | ||
} | ||
_proto.getLyric = function(idx){ | ||
try{ | ||
return lyrics_all[idx]; | ||
}catch(e){ | ||
return undefined; | ||
} | ||
} | ||
_proto.getIDTags = function(){ | ||
return meta_info; | ||
} | ||
_proto.select = function(ts){ | ||
if (isNaN(ts)) { | ||
return -1; | ||
} | ||
var timestamp = Number(ts) + timestamp_offset; | ||
var i = 0; | ||
if (timestamp < lyrics_all[0].timestamp) { | ||
return -1; | ||
} | ||
for (i = 0; i < (lyrics_all.length - 1); i++) { | ||
if (lyrics_all[i].timestamp <= timestamp | ||
&& lyrics_all[i+1].timestamp > timestamp) { | ||
break; | ||
} | ||
} | ||
return i; | ||
} | ||
//Parse lyric | ||
var timestamp_all = Array(); | ||
while (true) { | ||
var match = /^(\[\d+:\d+(.\d+)?\])(.*)/g.exec(line); | ||
if (match) { | ||
timestamp_all.push(match[1]); | ||
line = match[match.length - 1].replace(/(^\s*)|(\s*$)/g, ''); | ||
} else { | ||
break; | ||
} | ||
} | ||
for (var j = 0; j < timestamp_all.length; j++) { | ||
var ts_match = /^\[(\d{1,2}):(\d|[0-5]\d)(\.(\d+))?\]$/g.exec(timestamp_all[j]); | ||
if (ts_match) { | ||
this.lyrics_all.push({ | ||
timestamp: Number(ts_match[1]) * 60 + Number(ts_match[2]) + (ts_match[4] ? Number('0.' + ts_match[4]) : 0), | ||
text: line | ||
}); | ||
} | ||
} | ||
} | ||
|
||
/* Initialization */ | ||
for (var i = 0; i < ID_TAGS.length; i++) { | ||
ID_TAGS[i].re = new RegExp('\\['+ID_TAGS[i].id+':(.*)\\]$', 'g'); | ||
} | ||
if (text_lrc) { | ||
this.load(text_lrc); | ||
} | ||
} | ||
return Lyrics; | ||
})); | ||
this.lyrics_all.sort(function (a, b) { | ||
return (a.timestamp > b.timestamp ? 1 : -1); | ||
}); | ||
if (!this.lyrics_all.length) { | ||
this.lyrics_all = undefined; | ||
} | ||
if (this.isEmpty(this.meta_info)) { | ||
this.meta_info = undefined; | ||
} | ||
return (this.lyrics_all !== undefined || this.meta_info !== undefined) ? true : false; | ||
}, | ||
getLyrics: function () { | ||
return this.lyrics_all; | ||
}, | ||
getLyric: function (idx) { | ||
try { | ||
return this.lyrics_all[idx]; | ||
} catch (e) { | ||
return undefined; | ||
} | ||
}, | ||
getIDTags: function () { | ||
return this.meta_info; | ||
}, | ||
select: function (ts) { | ||
if (isNaN(ts)) { | ||
return -1; | ||
} | ||
var timestamp = Number(ts) + this.timestamp_offset; | ||
var i = 0; | ||
if (timestamp < this.lyrics_all[0].timestamp) { | ||
return -1; | ||
} | ||
for (i = 0; i < (this.lyrics_all.length - 1); i++) { | ||
if (this.lyrics_all[i].timestamp <= timestamp | ||
&& this.lyrics_all[i + 1].timestamp > timestamp) { | ||
break; | ||
} | ||
} | ||
return i; | ||
}, | ||
setTimestampOffset: function (offset) { | ||
this.timestamp_offset = isNaN(offset) ? 0 : Number(offset) / 1000; | ||
return Number(offset); | ||
}, | ||
isEmpty: function (obj) { | ||
for (var prop in obj) { | ||
if (obj.hasOwnProperty(prop)) { | ||
return false; | ||
} | ||
} | ||
return true; | ||
} | ||
}; | ||
return Lyrics; | ||
})); |
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