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@ -1,8 +1,6 @@ |
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package io.legado.app.model.localBook |
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import android.net.Uri |
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import android.system.Os |
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import android.system.OsConstants.SEEK_SET |
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import io.legado.app.data.appDb |
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import io.legado.app.data.entities.Book |
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import io.legado.app.data.entities.BookChapter |
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@ -11,8 +9,10 @@ import io.legado.app.help.DefaultData |
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import io.legado.app.model.localBook.LocalBook.cacheFolder |
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import io.legado.app.utils.* |
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import splitties.init.appCtx |
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import java.io.* |
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import java.nio.ByteBuffer |
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import java.io.File |
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import java.io.FileInputStream |
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import java.io.FileNotFoundException |
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import java.io.FileOutputStream |
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import java.nio.charset.Charset |
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import java.util.regex.Matcher |
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import java.util.regex.Pattern |
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@ -24,198 +24,198 @@ class TextFile(private val book: Book) { |
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@Throws(FileNotFoundException::class) |
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fun getChapterList(): ArrayList<BookChapter> { |
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return getBookFD(book).let { fd -> |
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try { |
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val rulePattern = if (book.tocUrl.isNotEmpty()) { |
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var rulePattern: Pattern? = null |
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if (book.charset == null || book.tocUrl.isNotEmpty()) { |
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getBookInputStream(book).use { bis -> |
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val buffer = ByteArray(BUFFER_SIZE) |
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var blockContent: String |
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bis.read(buffer) |
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book.charset = EncodingDetect.getEncode(buffer) |
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charset = book.fileCharset() |
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blockContent = String(buffer, charset) |
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rulePattern = if (book.tocUrl.isNotEmpty()) { |
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Pattern.compile(book.tocUrl, Pattern.MULTILINE) |
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} else { |
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tocRules.addAll(getTocRules()) |
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null |
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} |
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analyze(fd, book, rulePattern) |
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} finally { |
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if (fd.valid()) { |
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Os.close(fd) |
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if (blockContent.isEmpty()) { |
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bis.read(buffer) |
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book.charset = EncodingDetect.getEncode(buffer) |
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blockContent = String(buffer, charset) |
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} |
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getTocRule(blockContent)?.let { |
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Pattern.compile(it.rule, Pattern.MULTILINE) |
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} |
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} |
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} |
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} |
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return analyze(rulePattern) |
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} |
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private fun analyze( |
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bookFd: FileDescriptor, |
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book: Book, |
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pattern: Pattern? |
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): 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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var tocRule: TxtTocRule? = null |
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val buffer = ByteArray(BUFFER_SIZE) |
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var blockContent = "" |
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if (book.charset == null) { |
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Os.lseek(bookFd, 0, SEEK_SET) |
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val length = Os.read(bookFd, buffer, 0, BUFFER_SIZE) |
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book.charset = EncodingDetect.getEncode(buffer) |
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blockContent = String(buffer, 0, length, charset) |
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charset = book.fileCharset() |
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} |
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val rulePattern = pattern ?: let { |
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if (blockContent.isEmpty()) { |
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Os.lseek(bookFd, 0, SEEK_SET) |
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val length = Os.read(bookFd, buffer, 0, BUFFER_SIZE) |
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blockContent = String(buffer, 0, length, charset) |
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} |
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tocRule = getTocRule(blockContent) |
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tocRule?.let { |
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Pattern.compile(it.rule, Pattern.MULTILINE) |
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} |
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} |
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//加载章节 |
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//获取到的块起始点，在文件中的位置 |
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Os.lseek(bookFd, 0, SEEK_SET) |
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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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var allLength = 0 |
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val xx = ByteBuffer.allocate(BUFFER_SIZE) |
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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 (Os.read(bookFd, xx).also { length = it } > 0) { |
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blockPos++ |
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//如果存在Chapter |
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if (rulePattern != null) { |
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//将数据转换成String, 不能超过length |
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blockContent = String(xx.array(), 0, length, charset) |
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val lastN = blockContent.lastIndexOf("\n") |
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if (lastN > 0) { |
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blockContent = blockContent.substring(0, lastN) |
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length = blockContent.toByteArray(charset).size |
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allLength += length |
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Os.lseek(bookFd, allLength.toLong(), SEEK_SET) |
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getBookInputStream(book).use { bis -> |
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var tocRule: TxtTocRule? = null |
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val buffer = ByteArray(BUFFER_SIZE) |
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var blockContent: String |
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val rulePattern = pattern ?: let { |
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val length = bis.read(buffer) |
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bis.skip(-length.toLong()) |
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blockContent = String(buffer, charset) |
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tocRule = getTocRule(blockContent) |
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tocRule?.let { |
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Pattern.compile(it.rule, Pattern.MULTILINE) |
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} |
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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 = rulePattern.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 && pattern == null) { |
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//移除不匹配的规则 |
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tocRules.remove(tocRule) |
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return analyze(bookFd, book, null) |
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} |
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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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//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).also { length = it } > 0) { |
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blockPos++ |
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//如果存在Chapter |
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if (rulePattern != null) { |
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//将数据转换成String, 不能超过length |
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blockContent = String(buffer, 0, length, charset) |
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val lastN = blockContent.lastIndexOf("\n") |
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if (lastN > 0) { |
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blockContent = blockContent.substring(0, lastN) |
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val blockContentSize = blockContent.toByteArray(charset).size |
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bis.skip(-(length - blockContentSize).toLong()) |
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length = blockContentSize |
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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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//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 = rulePattern.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 && pattern == null) { |
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//移除不匹配的规则 |
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tocRules.remove(tocRule) |
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bis.close() |
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return analyze(null) |
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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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//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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} |
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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 && pattern == null) { |
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//移除不匹配的规则 |
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tocRules.remove(tocRule) |
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return analyze(bookFd, book, null) |
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} |
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} else { //进行本地虚拟分章 |
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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 > MAX_LENGTH_WITH_NO_CHAPTER) { //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 + MAX_LENGTH_WITH_NO_CHAPTER 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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if (seekPos == 0 && length > 50000 && pattern == null) { |
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//移除不匹配的规则 |
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tocRules.remove(tocRule) |
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bis.close() |
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return analyze(null) |
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} |
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} else { //进行本地虚拟分章 |
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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 > MAX_LENGTH_WITH_NO_CHAPTER) { //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 + MAX_LENGTH_WITH_NO_CHAPTER 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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|
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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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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() |
|
|
|
|
chapter.title = "第" + blockPos + "章" + "(" + chapterPos + ")" |
|
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|
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chapter.start = curOffset + chapterOffset + 1 |
|
|
|
|
chapter.end = curOffset + length |
|
|
|
|
toc.add(chapter) |
|
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|
|
strLength = 0 |
|
|
|
|
} |
|
|
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} |
|
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} |
|
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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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|
//block的偏移点 |
|
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|
|
curOffset += length.toLong() |
|
|
|
|
|
|
|
|
|
if (rulePattern != null) { |
|
|
|
|
//设置上一章的结尾 |
|
|
|
|
val lastChapter = toc.last() |
|
|
|
|
lastChapter.end = curOffset |
|
|
|
|
} |
|
|
|
|
if (rulePattern != null) { |
|
|
|
|
//设置上一章的结尾 |
|
|
|
|
val lastChapter = toc.last() |
|
|
|
|
lastChapter.end = curOffset |
|
|
|
|
} |
|
|
|
|
|
|
|
|
|
//当添加的block太多的时候，执行GC |
|
|
|
|
if (blockPos % 15 == 0) { |
|
|
|
|
System.gc() |
|
|
|
|
System.runFinalization() |
|
|
|
|
//当添加的block太多的时候，执行GC |
|
|
|
|
if (blockPos % 15 == 0) { |
|
|
|
|
System.gc() |
|
|
|
|
System.runFinalization() |
|
|
|
|
} |
|
|
|
|
} |
|
|
|
|
tocRule?.let { |
|
|
|
|
book.tocUrl = it.rule |
|
|
|
|
} |
|
|
|
|
} |
|
|
|
|
for (i in toc.indices) { |
|
|
|
|
@ -229,9 +229,7 @@ class TextFile(private val book: Book) { |
|
|
|
|
|
|
|
|
|
System.gc() |
|
|
|
|
System.runFinalization() |
|
|
|
|
tocRule?.let { |
|
|
|
|
book.tocUrl = it.rule |
|
|
|
|
} |
|
|
|
|
|
|
|
|
|
return toc |
|
|
|
|
} |
|
|
|
|
|
|
|
|
|
@ -241,18 +239,22 @@ class TextFile(private val book: Book) { |
|
|
|
|
private fun getTocRule(content: String): TxtTocRule? { |
|
|
|
|
var txtTocRule: TxtTocRule? = null |
|
|
|
|
var maxCs = 0 |
|
|
|
|
for (tocRule in tocRules) { |
|
|
|
|
val removeRules = hashSetOf<TxtTocRule>() |
|
|
|
|
tocRules.forEach { tocRule -> |
|
|
|
|
val pattern = Pattern.compile(tocRule.rule, Pattern.MULTILINE) |
|
|
|
|
val matcher = pattern.matcher(content) |
|
|
|
|
var cs = 0 |
|
|
|
|
while (matcher.find()) { |
|
|
|
|
cs++ |
|
|
|
|
} |
|
|
|
|
if (cs > maxCs) { |
|
|
|
|
if (cs == 0) { |
|
|
|
|
removeRules.add(tocRule) |
|
|
|
|
} else if (cs > maxCs) { |
|
|
|
|
maxCs = cs |
|
|
|
|
txtTocRule = tocRule |
|
|
|
|
} |
|
|
|
|
} |
|
|
|
|
tocRules.removeAll(removeRules) |
|
|
|
|
return txtTocRule |
|
|
|
|
} |
|
|
|
|
|
|
|
|
|
@ -274,22 +276,18 @@ class TextFile(private val book: Book) { |
|
|
|
|
@Throws(FileNotFoundException::class) |
|
|
|
|
fun getContent(book: Book, bookChapter: BookChapter): String { |
|
|
|
|
val count = (bookChapter.end!! - bookChapter.start!!).toInt() |
|
|
|
|
val content = ByteArray(count) |
|
|
|
|
getBookFD(book).let { fd -> |
|
|
|
|
try { |
|
|
|
|
Os.lseek(fd, bookChapter.start!!, SEEK_SET) |
|
|
|
|
Os.read(fd, content, 0, count) |
|
|
|
|
} finally { |
|
|
|
|
Os.close(fd) |
|
|
|
|
} |
|
|
|
|
val buffer = ByteArray(count) |
|
|
|
|
getBookInputStream(book).use { bis -> |
|
|
|
|
bis.skip(bookChapter.start!!) |
|
|
|
|
bis.read(buffer) |
|
|
|
|
} |
|
|
|
|
return String(content, book.fileCharset()) |
|
|
|
|
return String(buffer, book.fileCharset()) |
|
|
|
|
.substringAfter(bookChapter.title) |
|
|
|
|
.replace("^[\\n\\s]+".toRegex(), " ") |
|
|
|
|
} |
|
|
|
|
|
|
|
|
|
@Throws(FileNotFoundException::class) |
|
|
|
|
private fun getBookFD(book: Book): FileDescriptor { |
|
|
|
|
private fun getBookInputStream(book: Book): FileInputStream { |
|
|
|
|
if (book.bookUrl.isContentScheme()) { |
|
|
|
|
val uri = Uri.parse(book.bookUrl) |
|
|
|
|
val bookFile = cacheFolder.getFile(book.name) |
|
|
|
|
@ -302,10 +300,10 @@ class TextFile(private val book: Book) { |
|
|
|
|
} |
|
|
|
|
} |
|
|
|
|
} |
|
|
|
|
return FileInputStream(bookFile).fd |
|
|
|
|
return FileInputStream(bookFile) |
|
|
|
|
//return appCtx.contentResolver.openFileDescriptor(uri, "r")!!.fileDescriptor |
|
|
|
|
} |
|
|
|
|
return FileInputStream(File(book.bookUrl)).fd |
|
|
|
|
return FileInputStream(File(book.bookUrl)) |
|
|
|
|
} |
|
|
|
|
|
|
|
|
|
private fun getTocRules(): List<TxtTocRule> { |
|
|
|
|
|
gedoor
3 years ago