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@ -51,10 +51,12 @@ class TextFile(private val book: Book) { |
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} else { |
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book.tocUrl.toPattern(Pattern.MULTILINE) |
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} |
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return analyze(rulePattern) |
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return rulePattern?.let { |
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analyze(rulePattern) |
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} ?: analyze() |
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} |
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private fun analyze(pattern: Pattern?): ArrayList<BookChapter> { |
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private fun analyze(pattern: Pattern): ArrayList<BookChapter> { |
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val toc = arrayListOf<BookChapter>() |
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LocalBook.getBookInputStream(book).use { bis -> |
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var blockContent: String |
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@ -76,142 +78,188 @@ class TextFile(private val book: Book) { |
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.also { length = it } > 0 |
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) { |
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blockPos++ |
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//如果存在Chapter |
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if (pattern != null) { |
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var end = bufferStart + length |
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for (i in bufferStart + length - 1 downTo 0) { |
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if (buffer[i] == blank) { |
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end = i |
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break |
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} |
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} |
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//将数据转换成String, 不能超过length |
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blockContent = String(buffer, 0, end, charset) |
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buffer.copyInto(buffer, 0, end, bufferStart + length) |
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bufferStart = bufferStart + length - end |
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length = end |
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//当前Block下使过的String的指针 |
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var seekPos = 0 |
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//进行正则匹配 |
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val matcher: Matcher = pattern.matcher(blockContent) |
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//如果存在相应章节 |
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while (matcher.find()) { //获取匹配到的字符在字符串中的起始位置 |
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val chapterStart = matcher.start() |
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//获取章节内容 |
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val chapterContent = blockContent.substring(seekPos, chapterStart) |
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val chapterLength = chapterContent.toByteArray(charset).size |
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val lastStart = toc.lastOrNull()?.start ?: 0 |
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if (curOffset + chapterLength - lastStart > 50000) { |
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bis.close() |
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//移除不匹配的规则 |
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tocRules.removeFirstOrNull() |
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return analyze(tocRules.firstOrNull()?.rule?.toPattern(Pattern.MULTILINE)) |
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} |
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//如果 seekPos == 0 && nextChapterPos != 0 表示当前block处前面有一段内容 |
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//第一种情况一定是序章 第二种情况是上一个章节的内容 |
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if (seekPos == 0 && chapterStart != 0) { //获取当前章节的内容 |
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if (toc.isEmpty()) { //如果当前没有章节，那么就是序章 |
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//加入简介 |
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if (StringUtils.trim(chapterContent).isNotEmpty()) { |
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val qyChapter = BookChapter() |
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qyChapter.title = "前言" |
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qyChapter.start = 0 |
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qyChapter.end = chapterLength.toLong() |
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toc.add(qyChapter) |
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} |
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//创建当前章节 |
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val curChapter = BookChapter() |
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curChapter.title = matcher.group() |
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curChapter.start = chapterLength.toLong() |
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toc.add(curChapter) |
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} else { //否则就block分割之后，上一个章节的剩余内容 |
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//获取上一章节 |
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val lastChapter = toc.last() |
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//将当前段落添加上一章去 |
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lastChapter.end = |
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lastChapter.end!! + chapterLength.toLong() |
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//创建当前章节 |
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val curChapter = BookChapter() |
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curChapter.title = matcher.group() |
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curChapter.start = lastChapter.end |
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toc.add(curChapter) |
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} |
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} else { |
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if (toc.isNotEmpty()) { //获取章节内容 |
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//获取上一章节 |
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val lastChapter = toc.last() |
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lastChapter.end = |
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lastChapter.start!! + chapterContent.toByteArray(charset).size.toLong() |
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//创建当前章节 |
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val curChapter = BookChapter() |
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curChapter.title = matcher.group() |
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curChapter.start = lastChapter.end |
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toc.add(curChapter) |
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} else { //如果章节不存在则创建章节 |
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val curChapter = BookChapter() |
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curChapter.title = matcher.group() |
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curChapter.start = 0 |
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curChapter.end = 0 |
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toc.add(curChapter) |
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} |
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} |
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//设置指针偏移 |
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seekPos += chapterContent.length |
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var end = bufferStart + length |
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for (i in bufferStart + length - 1 downTo 0) { |
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if (buffer[i] == blank) { |
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end = i |
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break |
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} |
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if (seekPos == 0 && length > 50000) { |
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} |
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//将数据转换成String, 不能超过length |
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blockContent = String(buffer, 0, end, charset) |
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buffer.copyInto(buffer, 0, end, bufferStart + length) |
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bufferStart = bufferStart + length - end |
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length = end |
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//当前Block下使过的String的指针 |
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var seekPos = 0 |
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//进行正则匹配 |
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val matcher: Matcher = pattern.matcher(blockContent) |
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//如果存在相应章节 |
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while (matcher.find()) { //获取匹配到的字符在字符串中的起始位置 |
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val chapterStart = matcher.start() |
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//获取章节内容 |
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val chapterContent = blockContent.substring(seekPos, chapterStart) |
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val chapterLength = chapterContent.toByteArray(charset).size |
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val lastStart = toc.lastOrNull()?.start ?: 0 |
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if (curOffset + chapterLength - lastStart > 50000) { |
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bis.close() |
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//移除不匹配的规则 |
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tocRules.remove(tocRules.removeFirstOrNull()) |
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return analyze(tocRules.firstOrNull()?.rule?.toPattern(Pattern.MULTILINE)) |
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tocRules.removeFirstOrNull() |
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return tocRules.firstOrNull()?.let { |
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analyze(it.rule.toPattern(Pattern.MULTILINE)) |
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} ?: analyze() |
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} |
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} else { //进行本地虚拟分章 |
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bufferStart = 0 |
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//章节在buffer的偏移量 |
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var chapterOffset = 0 |
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//当前剩余可分配的长度 |
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var strLength = length |
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//分章的位置 |
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var chapterPos = 0 |
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while (strLength > 0) { |
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++chapterPos |
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//是否长度超过一章 |
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if (strLength > maxLengthWithNoToc) { //在buffer中一章的终止点 |
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var end = length |
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//寻找换行符作为终止点 |
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for (i in chapterOffset + maxLengthWithNoToc until length) { |
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if (buffer[i] == blank) { |
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end = i |
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break |
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} |
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//如果 seekPos == 0 && nextChapterPos != 0 表示当前block处前面有一段内容 |
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//第一种情况一定是序章 第二种情况是上一个章节的内容 |
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if (seekPos == 0 && chapterStart != 0) { //获取当前章节的内容 |
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if (toc.isEmpty()) { //如果当前没有章节，那么就是序章 |
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//加入简介 |
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if (StringUtils.trim(chapterContent).isNotEmpty()) { |
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val qyChapter = BookChapter() |
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qyChapter.title = "前言" |
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qyChapter.start = 0 |
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qyChapter.end = chapterLength.toLong() |
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toc.add(qyChapter) |
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} |
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val chapter = BookChapter() |
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chapter.title = "第${blockPos}章($chapterPos)" |
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chapter.start = curOffset + chapterOffset + 1 |
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chapter.end = curOffset + end |
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toc.add(chapter) |
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//减去已经被分配的长度 |
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strLength -= (end - chapterOffset) |
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//设置偏移的位置 |
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chapterOffset = end |
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} else { |
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val chapter = BookChapter() |
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chapter.title = "第" + blockPos + "章" + "(" + chapterPos + ")" |
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chapter.start = curOffset + chapterOffset + 1 |
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chapter.end = curOffset + length |
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toc.add(chapter) |
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strLength = 0 |
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//创建当前章节 |
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val curChapter = BookChapter() |
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curChapter.title = matcher.group() |
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curChapter.start = chapterLength.toLong() |
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toc.add(curChapter) |
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} else { //否则就block分割之后，上一个章节的剩余内容 |
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//获取上一章节 |
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val lastChapter = toc.last() |
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//将当前段落添加上一章去 |
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lastChapter.end = |
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lastChapter.end!! + chapterLength.toLong() |
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//创建当前章节 |
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val curChapter = BookChapter() |
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curChapter.title = matcher.group() |
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curChapter.start = lastChapter.end |
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toc.add(curChapter) |
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} |
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} else { |
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if (toc.isNotEmpty()) { //获取章节内容 |
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//获取上一章节 |
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val lastChapter = toc.last() |
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lastChapter.end = |
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lastChapter.start!! + chapterContent.toByteArray(charset).size.toLong() |
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//创建当前章节 |
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val curChapter = BookChapter() |
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curChapter.title = matcher.group() |
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curChapter.start = lastChapter.end |
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toc.add(curChapter) |
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} else { //如果章节不存在则创建章节 |
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val curChapter = BookChapter() |
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curChapter.title = matcher.group() |
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curChapter.start = 0 |
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curChapter.end = 0 |
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toc.add(curChapter) |
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} |
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} |
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//设置指针偏移 |
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seekPos += chapterContent.length |
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} |
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if (seekPos == 0 && length > 50000) { |
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bis.close() |
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//移除不匹配的规则 |
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tocRules.remove(tocRules.removeFirstOrNull()) |
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return tocRules.firstOrNull()?.let { |
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analyze(it.rule.toPattern(Pattern.MULTILINE)) |
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} ?: analyze() |
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} |
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//block的偏移点 |
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curOffset += length.toLong() |
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if (pattern != null) { |
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//设置上一章的结尾 |
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val lastChapter = toc.last() |
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lastChapter.end = curOffset |
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//设置上一章的结尾 |
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val lastChapter = toc.last() |
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lastChapter.end = curOffset |
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//当添加的block太多的时候，执行GC |
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if (blockPos % 15 == 0) { |
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System.gc() |
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System.runFinalization() |
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} |
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} |
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} |
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for (i in toc.indices) { |
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val bean = toc[i] |
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bean.index = i |
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bean.bookUrl = book.bookUrl |
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bean.url = (MD5Utils.md5Encode16(book.originName + i + bean.title)) |
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} |
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book.latestChapterTitle = toc.last().title |
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book.totalChapterNum = toc.size |
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System.gc() |
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System.runFinalization() |
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book.tocUrl = pattern.pattern() |
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book.save() |
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return toc |
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} |
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private fun analyze(): ArrayList<BookChapter> { |
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val toc = arrayListOf<BookChapter>() |
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LocalBook.getBookInputStream(book).use { bis -> |
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//加载章节 |
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var curOffset: Long = 0 |
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//block的个数 |
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var blockPos = 0 |
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//读取的长度 |
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var length: Int |
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val buffer = ByteArray(bufferSize) |
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var bufferStart = 3 |
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bis.read(buffer, 0, 3) |
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if (Utf8BomUtils.hasBom(buffer)) { |
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bufferStart = 0 |
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curOffset = 3 |
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} |
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//获取文件中的数据到buffer，直到没有数据为止 |
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while (bis.read(buffer, bufferStart, bufferSize - bufferStart) |
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.also { length = it } > 0 |
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) { |
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bufferStart = 0 |
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blockPos++ |
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//章节在buffer的偏移量 |
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var chapterOffset = 0 |
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//当前剩余可分配的长度 |
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var strLength = length |
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//分章的位置 |
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var chapterPos = 0 |
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while (strLength > 0) { |
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++chapterPos |
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//是否长度超过一章 |
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if (strLength > maxLengthWithNoToc) { //在buffer中一章的终止点 |
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var end = length |
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//寻找换行符作为终止点 |
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for (i in chapterOffset + maxLengthWithNoToc until length) { |
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if (buffer[i] == blank) { |
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end = i |
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break |
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} |
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} |
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val chapter = BookChapter() |
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chapter.title = "第${blockPos}章($chapterPos)" |
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chapter.start = curOffset + chapterOffset + 1 |
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chapter.end = curOffset + end |
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toc.add(chapter) |
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//减去已经被分配的长度 |
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strLength -= (end - chapterOffset) |
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//设置偏移的位置 |
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chapterOffset = end |
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} else { |
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val chapter = BookChapter() |
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chapter.title = "第" + blockPos + "章" + "(" + chapterPos + ")" |
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chapter.start = curOffset + chapterOffset + 1 |
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chapter.end = curOffset + length |
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toc.add(chapter) |
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strLength = 0 |
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} |
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} |
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//block的偏移点 |
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curOffset += length.toLong() |
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//当添加的block太多的时候，执行GC |
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|
if (blockPos % 15 == 0) { |
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|
|
@ -231,7 +279,7 @@ class TextFile(private val book: Book) { |
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|
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|
|
System.gc() |
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|
System.runFinalization() |
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book.tocUrl = pattern?.pattern() ?: "" |
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book.tocUrl = "" |
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book.save() |
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return toc |
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} |
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gedoor
3 years ago