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import type { LyricLine } from '@applemusic-like-lyrics/lyric'
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import { stripLyricMetadata, type StripOptions } from './lyricStripper'
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import { keywords as defaultKeywords, regexes as defaultRegexes } from './exclude'
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import { cloneDeep } from 'lodash-es'
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/**
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* 获取替换配置
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*/
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const getReplacementConfig = (settings: any) => {
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const preset = settings.bracketReplacementPreset.value || 'dash'
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const custom = settings.customBracketReplacement.value || '-'
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let startStr = ' - '
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const endStr = ' '
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const isEnclosure = false
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// 预设模式
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if (preset === 'angleBrackets') {
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return { startStr: '〔', endStr: '〕', isEnclosure: true }
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} else if (preset === 'cornerBrackets') {
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return { startStr: '「', endStr: '」', isEnclosure: true }
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} else if (preset === 'custom') {
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const trimmed = custom.trim()
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// 启发式判断：如果是两个不同字符且不包含减号，视为成对符号 (如 "()")
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const isPair = trimmed.length === 2 && trimmed[0] !== trimmed[1] && !trimmed.includes('-')
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if (isPair) {
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return { startStr: trimmed[0], endStr: trimmed[1], isEnclosure: true }
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} else {
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// 否则视为分隔符 (如 "-")，加上空格规范化
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startStr = ' ' + trimmed + ' '
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startStr = startStr.replace(/\s+/g, ' ')
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return { startStr, endStr: ' ', isEnclosure: false }
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}
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} else if (preset === 'space') {
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return { startStr: ' ', endStr: ' ', isEnclosure: false }
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}
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// 默认 dash 模式
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return { startStr, endStr, isEnclosure }
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}
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/**
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* 应用括号替换逻辑
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*/
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const applyBracketReplacement = (lines: LyricLine[], settings: any): LyricLine[] => {
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if (!settings.replaceLyricBrackets.value) return lines
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const { startStr, endStr, isEnclosure } = getReplacementConfig(settings)
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// 正则：匹配全行括号 (如 "(Music)")
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const fullBracketRegex = /^\s*[(（][^()（）]*[)）]\s*$/
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// 正则：匹配左括号
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const leftBracketRegex = /[(（]/g
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// 正则：匹配右括号
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const rightBracketRegex = /[)）]/g
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/**
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* 处理普通字符串 (用于翻译和罗马音)
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*/
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const processString = (str: string): string => {
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if (!str) return str
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// 如果是全行括号且非闭合模式 (如分隔符模式)，则直接去除括号
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if (!isEnclosure && fullBracketRegex.test(str)) {
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return str
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.replace(/^\s*[(（]/, '')
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.replace(/[)）]\s*$/, '')
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.trim()
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}
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let res = str.replace(leftBracketRegex, startStr)
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if (isEnclosure) {
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res = res.replace(rightBracketRegex, endStr)
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} else {
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// 分隔符模式：右括号如果是结尾则移除，否则替换为结束符(空格)
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res = res.replace(/[)）](?=\s*$)/g, '').replace(rightBracketRegex, endStr)
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// 清理重复分隔符 (如 " - - " -> " - ")
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if (startStr.includes('-')) {
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res = res.replace(/(?:\s*-\s*){2,}/g, ' - ')
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}
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}
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return res
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}
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return lines.map((line) => {
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// 处理 words
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if (line.words) {
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const fullText = line.words.map((w) => w.word).join('')
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const isFullBracket = fullBracketRegex.test(fullText)
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// 整行是括号内容，且处于分隔符模式 (非闭合) -> 直接移除首尾括号，不加分隔符
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if (isFullBracket && !isEnclosure) {
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let removedStart = false
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let removedEnd = false
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// 移除第一个左括号
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for (const word of line.words) {
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if (!removedStart && leftBracketRegex.test(word.word)) {
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word.word = word.word.replace(leftBracketRegex, '')
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removedStart = true
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}
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}
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// 移除最后一个右括号
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for (let i = line.words.length - 1; i >= 0; i--) {
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const word = line.words[i]
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if (!removedEnd && rightBracketRegex.test(word.word)) {
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const lastIndex = Math.max(word.word.lastIndexOf(')'), word.word.lastIndexOf('）'))
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if (lastIndex !== -1) {
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word.word = word.word.substring(0, lastIndex) + word.word.substring(lastIndex + 1)
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removedEnd = true
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}
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}
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}
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} else {
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// 普通替换逻辑
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line.words.forEach((word, index) => {
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// 替换左括号
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word.word = word.word.replace(leftBracketRegex, startStr)
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if (isEnclosure) {
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// 闭合模式：直接替换右括号
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word.word = word.word.replace(rightBracketRegex, endStr)
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} else {
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// 分隔符模式：
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word.word = word.word.replace(rightBracketRegex, (_, offset, str) => {
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// 如果右括号在单词末尾，且是整句的最后一个单词 -> 移除 (视为句尾闭合)
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const isAtWordEnd = offset === str.length - 1
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const isAtLineEnd = index === line.words.length - 1
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if (isAtWordEnd) {
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return isAtLineEnd ? '' : endStr
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}
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return endStr
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})
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}
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})
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// 清理逻辑 (仅针对带减号的分隔符模式)
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if (!isEnclosure && startStr.includes('-')) {
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line.words.forEach((word, index) => {
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// 单词内重复: " - - " -> " - "
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word.word = word.word.replace(/(?:\s*-\s*){2,}/g, ' - ')
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// 单词间重复: 前一个词以 "- " 结尾，当前词以 " -" 开头 -> 移除前一个的尾部
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if (index > 0) {
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const prev = line.words[index - 1]
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if (/-\s*$/.test(prev.word) && /^\s*-/.test(word.word)) {
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prev.word = prev.word.replace(/-\s*$/, '')
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// 确保当前词开头有完整分隔符
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if (!/^\s*-\s+/.test(word.word)) {
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word.word = ' - ' + word.word.replace(/^\s*-\s*/, '')
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}
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}
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}
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})
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}
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}
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}
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// 处理翻译和罗马音
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if (line.translatedLyric) line.translatedLyric = processString(line.translatedLyric)
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if (line.romanLyric) line.romanLyric = processString(line.romanLyric)
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return line
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})
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}
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/**
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* 格式化歌词
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* 主要处理括号替换、关键词过滤等
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* @param lines 歌词行
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* @param settings 歌词设置对象 (从 useLyricSettings 获取)
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* @param metadata 可选的歌曲元数据，用于更精确的歌词清洗
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*/
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export const formatLyric = (
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lines: LyricLine[],
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settings: any,
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metadata?: { title?: string; artists?: string[] }
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): LyricLine[] => {
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const { enableExcludeLyrics, excludeLyricsUserKeywords, excludeLyricsUserRegexes } = settings
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if (!lines || lines.length === 0) return []
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// 使用 cloneDeep 避免修改原始引用 (如果需要)
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// 但 formatLyric 通常被视为纯函数处理流程，这里我们操作的是 parsedLyrics 的结果
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// 为了安全起见，克隆一份
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let processedLines = cloneDeep(lines)
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// 1. 智能元数据清洗 (Smart Metadata Stripping)
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if (enableExcludeLyrics && enableExcludeLyrics.value) {
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const userKeywords = excludeLyricsUserKeywords.value || []
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const userRegexes = excludeLyricsUserRegexes.value || []
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const mergedKeywords = [...new Set([...defaultKeywords, ...userKeywords])]
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const mergedRegexes = [...new Set([...defaultRegexes, ...userRegexes])]
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const options: StripOptions = {
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keywords: mergedKeywords,
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regexPatterns: mergedRegexes,
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matchMetadata: metadata
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}
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processedLines = stripLyricMetadata(processedLines, options)
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}
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// 2. 基础过滤 (保留)
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processedLines = processedLines.filter((line) => {
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const text = line.words.map((w) => w.word).join('')
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const transText = line.translatedLyric || ''
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if (!text.trim()) {
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if (!transText.trim() || transText.includes('著作权') || transText.includes('QQ音乐')) {
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return false
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}
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}
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if (text.includes('著作权') || text.includes('QQ音乐')) return false
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if (transText.includes('著作权') || transText.includes('QQ音乐') || transText.trim() === '//') {
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line.translatedLyric = ''
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}
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return true
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})
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// 3. 括号替换
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processedLines = applyBracketReplacement(processedLines, settings)
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return processedLines
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}
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