diff --git a/src/utils/lyrics.js b/src/utils/lyrics.js index 394b73c..32aa8f0 100644 --- a/src/utils/lyrics.js +++ b/src/utils/lyrics.js @@ -9,32 +9,37 @@ export function lyricParser(lrc) { }; } -export function parseLyric(lrc) { - const lyrics = lrc.split('\n'); - const lrcObj = []; - for (let i = 0; i < lyrics.length; i++) { - const lyric = lyrics[i]; - const timeReg = /\[\d*:\d*((\.|:)\d*)*\]/g; - const timeRegExpArr = lyric.match(timeReg); - if (!timeRegExpArr) continue; - const content = lyric.replace(timeReg, ''); - for (let k = 0, h = timeRegExpArr.length; k < h; k++) { - const t = timeRegExpArr[k]; - const min = Number(String(t.match(/\[\d*/i)).slice(1)); - const sec = Number(String(t.match(/:\d*/i)).slice(1)); - const ms = Number(t.match(/\d*\]/i)[0].slice(0, 2)) / 100; - const time = min * 60 + sec + ms; - if (content !== '') { - lrcObj.push({ - time: time, - rawTime: timeRegExpArr[0], +const extractTimeRegex = /^(?\[(?\d+):(?\d+)(?:\.|:)(?\d+)\])\s*(?(.+|))$/; + +function parseLyric(lrc) { + const lyrics = lrc.trim().split('\n'); + + const parsedLyrics = lyrics + .filter(lyric => lyric.length) // filter the lyric line which is empty + .map((/** @type {string} */ line) => { + try { + const extractedLyric = extractTimeRegex.exec(line); + + // If this line is not a lyric. + if (!extractedLyric) throw 'This line is not a lyric.'; + + // Otherwise, we extract the lyric part. + const { rawTime, min, sec, ms, content } = extractedLyric.groups; + const time = Number(min) * 60 + Number(sec) + 0.01 * Number(ms); + + return { + time, + rawTime, content: trimContent(content), - }); + }; + } catch (e) { + console.warn(`Failed to extract "${line}". ${e}`); } - } - } - lrcObj.sort((a, b) => a.time - b.time); - return lrcObj; + }) + .filter(response => !!response) // remove "undefined" entries + .sort((a, b) => a.time - b.time); + + return parsedLyrics; } function trimContent(content) {