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Original file line number | Diff line number | Diff line change |
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# ---------------------------------------- | ||
# - mode: python - | ||
# - author: helloplhm-qwq - | ||
# - name: lyric.py - | ||
# - project: lx-music-api-server - | ||
# - license: MIT - | ||
# ---------------------------------------- | ||
# This file is part of the "lx-music-api-server" project. | ||
|
||
from common.exceptions import FailedException | ||
from common.utils import encodeURI, createBase64Decode | ||
from .musicInfo import getMusicInfo | ||
from common import Httpx | ||
import ujson as json | ||
import zlib | ||
import re | ||
|
||
class ParseTools: | ||
def __init__(self): | ||
self.head_exp = r'^.*\[id:\$\w+\]\n' | ||
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def parse(self, string): | ||
string = string.replace('\r', '') | ||
if re.match(self.head_exp, string): | ||
string = re.sub(self.head_exp, '', string) | ||
trans = re.search(r'\[language:([\w=\\/+]+)\]', string) | ||
lyric = None | ||
rlyric = None | ||
tlyric = None | ||
if trans: | ||
string = re.sub(r'\[language:[\w=\\/+]+\]\n', '', string) | ||
decoded_trans = createBase64Decode(trans.group(1)).decode('utf-8') | ||
trans_json = json.loads(decoded_trans) | ||
for item in trans_json['content']: | ||
if item['type'] == 0: | ||
rlyric = item['lyricContent'] | ||
elif item['type'] == 1: | ||
tlyric = item['lyricContent'] | ||
self.i = 0 | ||
lxlyric = re.sub(r'\[((\d+),\d+)\].*', lambda x: self.process_lyric_match(x, rlyric, tlyric, self.i), string) | ||
rlyric = '\n'.join(rlyric) if rlyric else '' | ||
tlyric = '\n'.join(tlyric) if tlyric else '' | ||
lxlyric = re.sub(r'<(\d+,\d+),\d+>', r'<\1>', lxlyric) | ||
lyric = re.sub(r'<\d+,\d+>', '', lxlyric) | ||
return { | ||
'lyric': lyric, | ||
'tlyric': tlyric, | ||
'rlyric': rlyric, | ||
'lxlyric': lxlyric | ||
} | ||
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||
def process_lyric_match(self, match, rlyric, tlyric, i): | ||
result = re.match(r'\[((\d+),\d+)\].*', match.group(0)) | ||
time = int(result.group(2)) | ||
ms = time % 1000 | ||
time /= 1000 | ||
m = str(int(time / 60)).zfill(2) | ||
time %= 60 | ||
s = str(int(time)).zfill(2) | ||
time_string = f'{m}:{s}.{ms}' | ||
transformed_t = '' | ||
if (tlyric): | ||
for t in tlyric[i]: | ||
transformed_t += t | ||
tlyric[i] = transformed_t | ||
if (rlyric): | ||
nr = [] | ||
for r in rlyric[i]: | ||
nr.append(r) | ||
_tnr = ''.join(nr) | ||
if (' ' in _tnr): | ||
rlyric[i] = _tnr | ||
else: | ||
nr = [] | ||
for r in rlyric[i]: | ||
nr.append(r.strip()) | ||
rlyric[i] = ' '.join(nr) | ||
if rlyric: | ||
rlyric[i] = f'[{time_string}]{rlyric[i] if rlyric[i] else ""}'.replace(' ', ' ') | ||
if tlyric: | ||
tlyric[i] = f'[{time_string}]{tlyric[i] if tlyric[i] else ""}' | ||
self.i += 1 | ||
return re.sub(result.group(1), time_string, match.group(0)) | ||
|
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global_parser = ParseTools() | ||
|
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def krcDecode(a:bytes): | ||
encrypt_key = (64, 71, 97, 119, 94, 50, 116, 71, 81, 54, 49, 45, 206, 210, 110, 105) | ||
content = a[4:] # krc1 | ||
compress_content = bytes(content[i] ^ encrypt_key[i % len(encrypt_key)] for i in range(len(content))) | ||
text_bytes = zlib.decompress(bytes(compress_content)) | ||
text = text_bytes.decode("utf-8") | ||
return text | ||
|
||
async def lyricSearchByHash(hash_): | ||
musicInfo = await getMusicInfo(hash_) | ||
if (not musicInfo): | ||
raise FailedException('歌曲信息获取失败') | ||
hash_new = musicInfo['audio_info']['hash'] | ||
name = musicInfo['songname'] | ||
timelength = int(musicInfo['audio_info']['timelength']) // 1000 | ||
req = await Httpx.AsyncRequest(encodeURI(f'https://lyrics.kugou.com/search?ver=1&man=yes&client=pc&keyword=' + | ||
name + '&hash=' + hash_new + '&timelength=' + str(timelength)), { | ||
'method': 'GET', | ||
}) | ||
body = req.json() | ||
if (body['status'] != 200): | ||
raise FailedException('歌词获取失败') | ||
if (not body['candidates']): | ||
raise FailedException('歌词获取失败: 当前歌曲无歌词') | ||
return body['candidates'] | ||
|
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async def getLyric(lyric_id, accesskey): | ||
req = await Httpx.AsyncRequest(f'https://lyrics.kugou.com/download?ver=1&client=pc&id={lyric_id}&accesskey={accesskey}', { | ||
'method': 'GET', | ||
}) | ||
body = req.json() | ||
if (body['status'] != 200 or body['error_code'] != 0 or (not body['content'])): | ||
raise FailedException('歌词获取失败') | ||
content = createBase64Decode(body['content']) | ||
content = krcDecode(content) | ||
|
||
return global_parser.parse(content) |
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