snowy-yang
66d06ef48a
- 四平台 tipSearch 全部删除（永不做搜索联想），types 同步去掉 tipSearch 字段 - 歌词解码器归位：kg/krcDecode、tx/qrcDecode、kw/lyricDecode（原 common/ 下三处） - rendererIpc/ipcNames IPC 桥删除，SDK 纯服务端化 - supportQuality 由各平台 apis 内联导出（sdk/index 汇总），kg/kw/tx/wy 改直连 apis/*，api-source 旧层移除
79 lines
2.2 KiB
TypeScript
79 lines
2.2 KiB
TypeScript
// 酷狗 krc 歌词解码
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import zlib from 'node:zlib'
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import { decodeName } from '../common/utils.ts'
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// 基于社区通用的 krc 解析思路
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const enc_key = Buffer.from([0x40, 0x47, 0x61, 0x77, 0x5e, 0x32, 0x74, 0x47, 0x51, 0x36, 0x31, 0x2d, 0xce, 0xd2, 0x6e, 0x69])
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const decodeLyric = str => new Promise((resolve, reject) => {
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if (!str.length) return
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const buf_str = Buffer.from(str, 'base64').subarray(4)
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for (let i = 0, len = buf_str.length; i < len; i++) {
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buf_str[i] = buf_str[i] ^ enc_key[i % 16]
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}
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zlib.inflate(buf_str, (err, result) => {
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if (err) return reject(err)
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resolve(result.toString())
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})
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})
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const headExp = /^.*\[id:\$\w+\]\n/
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const parseLyric = str => {
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str = str.replace(/\r/g, '')
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if (headExp.test(str)) str = str.replace(headExp, '')
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let trans = str.match(/\[language:([\w=\\/+]+)\]/)
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let lyric
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let rlyric
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let tlyric
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if (trans) {
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str = str.replace(/\[language:[\w=\\/+]+\]\n/, '')
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let json = JSON.parse(Buffer.from(trans[1], 'base64').toString())
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for (const item of json.content) {
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switch (item.type) {
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case 0:
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rlyric = item.lyricContent
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break
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case 1:
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tlyric = item.lyricContent
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break
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}
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}
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}
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let i = 0
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let yrc = str.replace(/\[((\d+),\d+)\].*/g, str => {
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let result = str.match(/\[((\d+),\d+)\].*/)
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let time: any = parseInt(result[2])
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let ms = time % 1000
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time /= 1000
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let m = Math.trunc(time / 60).toString().padStart(2, '0')
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time %= 60
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let s = Math.trunc(time).toString().padStart(2, '0')
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time = `${m}:${s}.${ms}`
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if (rlyric) rlyric[i] = `[${time}]${rlyric[i]?.join('') ?? ''}`
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if (tlyric) tlyric[i] = `[${time}]${tlyric[i]?.join('') ?? ''}`
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i++
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return str.replace(result[1], time)
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})
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rlyric = rlyric ? rlyric.join('\n') : ''
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tlyric = tlyric ? tlyric.join('\n') : ''
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yrc = yrc.replace(/<(\d+,\d+),\d+>/g, '<$1>')
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yrc = decodeName(yrc)
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lyric = yrc.replace(/<\d+,\d+>/g, '')
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rlyric = decodeName(rlyric)
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tlyric = decodeName(tlyric)
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return {
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lyric,
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tlyric,
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rlyric,
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yrc,
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}
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}
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export const decodeKrc = async data => {
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return decodeLyric(data).then(parseLyric)
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}
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export default { decodeKrc }
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