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@ -80,11 +80,11 @@ public class LocalPageLoader extends PageLoader { |
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* 1. 序章的添加 |
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* 2. 章节存在的书本的虚拟分章效果 |
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*/ |
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public List<BookChapterBean> loadChapters() throws IOException { |
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/*public List<Chapter> loadChapters() throws IOException { |
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mBookFile = new File(mCollBook.getChapterUrl()); |
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//获取文件编码
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mCharset = FileUtils.getFileEncode(mBookFile.getAbsolutePath()); |
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List<BookChapterBean> chapters = new ArrayList<>(); |
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List<Chapter> chapters = new ArrayList<>(); |
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RandomAccessFile bookStream = null; |
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boolean hasChapter = false; |
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//获取文件流
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@ -127,38 +127,38 @@ public class LocalPageLoader extends PageLoader { |
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//如果当前对整个文件的偏移位置为0的话，那么就是序章
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if (curOffset == 0) { |
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//创建序章
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BookChapterBean preChapter = new BookChapterBean(); |
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preChapter.title = "序章"; |
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preChapter.start = 0; |
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preChapter.end = chapterContent.getBytes(mCharset).length; //获取String的byte值,作为最终值
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Chapter preChapter = new Chapter(); |
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preChapter.setTitle("序章"); |
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preChapter.setStart(0); |
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preChapter.setEnd(chapterContent.getBytes(mCharset).length); //获取String的byte值,作为最终值
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//如果序章大小大于30才添加进去
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if (preChapter.end - preChapter.start > 30) { |
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if (preChapter.getEnd() - preChapter.getStart() > 30) { |
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chapters.add(preChapter); |
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} |
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//创建当前章节
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BookChapterBean curChapter = new BookChapterBean(); |
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curChapter.title = matcher.group(); |
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curChapter.start = preChapter.end; |
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Chapter curChapter = new Chapter(); |
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curChapter.setTitle(matcher.group()); |
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curChapter.setStart(preChapter.getEnd()); |
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chapters.add(curChapter); |
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} |
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//否则就block分割之后，上一个章节的剩余内容
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else { |
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//获取上一章节
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BookChapterBean lastChapter = chapters.get(chapters.size() - 1); |
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Chapter lastChapter = chapters.get(chapters.size() - 1); |
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//将当前段落添加上一章去
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lastChapter.end += chapterContent.getBytes(mCharset).length; |
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lastChapter.setEnd(lastChapter.getEnd() + chapterContent.getBytes(mCharset).length); |
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//如果章节内容太小，则移除
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if (lastChapter.end - lastChapter.start < 30) { |
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if (lastChapter.getEnd() - lastChapter.getStart() < 30) { |
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chapters.remove(lastChapter); |
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} |
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//创建当前章节
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BookChapterBean curChapter = new BookChapterBean(); |
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curChapter.title = matcher.group(); |
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curChapter.start = lastChapter.end; |
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Chapter curChapter = new Chapter(); |
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curChapter.setTitle(matcher.group()); |
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curChapter.setStart(lastChapter.getEnd()); |
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chapters.add(curChapter); |
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} |
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} else { |
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@ -169,25 +169,25 @@ public class LocalPageLoader extends PageLoader { |
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seekPos += chapterContent.length(); |
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//获取上一章节
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BookChapterBean lastChapter = chapters.get(chapters.size() - 1); |
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lastChapter.end = lastChapter.start + chapterContent.getBytes(mCharset).length; |
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Chapter lastChapter = chapters.get(chapters.size() - 1); |
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lastChapter.setEnd(lastChapter.getStart() + chapterContent.getBytes(mCharset).length); |
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//如果章节内容太小，则移除
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if (lastChapter.end - lastChapter.start < 30) { |
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if (lastChapter.getEnd() - lastChapter.getStart() < 30) { |
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chapters.remove(lastChapter); |
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} |
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//创建当前章节
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BookChapterBean curChapter = new BookChapterBean(); |
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curChapter.title = matcher.group(); |
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curChapter.start = lastChapter.end; |
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Chapter curChapter = new Chapter(); |
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curChapter.setTitle(matcher.group()); |
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curChapter.setStart(lastChapter.getEnd()); |
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chapters.add(curChapter); |
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} |
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//如果章节不存在则创建章节
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else { |
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BookChapterBean curChapter = new BookChapterBean(); |
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curChapter.title = matcher.group(); |
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curChapter.start = 0; |
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Chapter curChapter = new Chapter(); |
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curChapter.setTitle(matcher.group()); |
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curChapter.setStart(0); |
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chapters.add(curChapter); |
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} |
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} |
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@ -215,20 +215,20 @@ public class LocalPageLoader extends PageLoader { |
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break; |
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} |
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} |
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BookChapterBean chapter = new BookChapterBean(); |
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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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Chapter chapter = new Chapter(); |
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chapter.setTitle("第" + blockPos + "章" + "(" + chapterPos + ")"); |
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chapter.setStart(curOffset + chapterOffset + 1); |
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chapter.setEnd(curOffset + end); |
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chapters.add(chapter); |
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//减去已经被分配的长度
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strLength = 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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BookChapterBean chapter = new BookChapterBean(); |
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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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Chapter chapter = new Chapter(); |
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chapter.setTitle("第" + blockPos + "章" + "(" + chapterPos + ")"); |
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chapter.setStart(curOffset + chapterOffset + 1); |
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chapter.setEnd(curOffset + length); |
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chapters.add(chapter); |
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strLength = 0; |
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} |
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@ -240,8 +240,8 @@ public class LocalPageLoader extends PageLoader { |
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if (hasChapter) { |
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//设置上一章的结尾
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BookChapterBean lastChapter = chapters.get(chapters.size() - 1); |
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lastChapter.end = curOffset; |
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Chapter lastChapter = chapters.get(chapters.size() - 1); |
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lastChapter.setEnd(curOffset); |
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} |
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//当添加的block太多的时候，执行GC
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@ -255,39 +255,204 @@ public class LocalPageLoader extends PageLoader { |
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System.gc(); |
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System.runFinalization(); |
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return chapters; |
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}*/ |
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/** |
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* 未完成的部分: |
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* 1. 序章的添加 |
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* 2. 章节存在的书本的虚拟分章效果 |
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*/ |
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private List<Chapter> loadChapters() throws IOException { |
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mBookFile = new File(mCollBook.getChapterUrl()); |
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//获取文件编码
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mCharset = FileUtils.getFileCharset(mBookFile); |
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Log.d("mCharset", mCharset); |
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List<Chapter> mChapterList = new ArrayList<>(); |
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//获取文件流
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RandomAccessFile bookStream = new RandomAccessFile(mBookFile, "r"); |
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//寻找匹配文章标题的正则表达式，判断是否存在章节名
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boolean hasChapter = checkChapterType(bookStream); |
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//加载章节
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byte[] buffer = new byte[BUFFER_SIZE]; |
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//获取到的块起始点，在文件中的位置
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long curOffset = 0; |
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//block的个数
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int blockPos = 0; |
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//读取的长度
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int length; |
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int allLength = 0; |
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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 ((length = bookStream.read(buffer, 0, buffer.length)) > 0) { |
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++blockPos; |
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//如果存在Chapter
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if (hasChapter) { |
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//将数据转换成String
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String blockContent = new String(buffer, 0, length, mCharset); |
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int 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.getBytes(mCharset).length; |
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allLength = allLength + length; |
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bookStream.seek(allLength); |
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} |
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//当前Block下使过的String的指针
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int seekPos = 0; |
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//进行正则匹配
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Matcher matcher = mChapterPattern.matcher(blockContent); |
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//如果存在相应章节
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while (matcher.find()) { |
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//获取匹配到的字符在字符串中的起始位置
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int chapterStart = matcher.start(); |
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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 第二种情况可能是上一个章节的内容
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if (seekPos == 0 && chapterStart != 0) { |
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//获取当前章节的内容
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String chapterContent = blockContent.substring(seekPos, chapterStart); |
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//设置指针偏移
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seekPos += chapterContent.length(); |
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if (mChapterList.size() == 0) { //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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mCollBook.setDesc(chapterContent); |
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//创建当前章节
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Chapter curChapter = new Chapter(); |
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curChapter.setTitle(matcher.group()); |
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curChapter.setStart(chapterContent.getBytes(mCharset).length); |
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mChapterList.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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Chapter lastChapter = mChapterList.get(mChapterList.size() - 1); |
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//将当前段落添加上一章去
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lastChapter.setEnd(lastChapter.getEnd() + chapterContent.getBytes(mCharset).length); |
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//创建当前章节
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Chapter curChapter = new Chapter(); |
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curChapter.setTitle(matcher.group()); |
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curChapter.setStart(lastChapter.getEnd()); |
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mChapterList.add(curChapter); |
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} |
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} else { |
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//是否存在章节
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if (mChapterList.size() != 0) { |
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//获取章节内容
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String chapterContent = blockContent.substring(seekPos, matcher.start()); |
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seekPos += chapterContent.length(); |
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//获取上一章节
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Chapter lastChapter = mChapterList.get(mChapterList.size() - 1); |
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lastChapter.setEnd(lastChapter.getStart() + chapterContent.getBytes(mCharset).length); |
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//创建当前章节
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Chapter curChapter = new Chapter(); |
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curChapter.setTitle(matcher.group()); |
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curChapter.setStart(lastChapter.getEnd()); |
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mChapterList.add(curChapter); |
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} else { //如果章节不存在则创建章节
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Chapter curChapter = new Chapter(); |
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curChapter.setTitle(matcher.group()); |
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curChapter.setStart(0L); |
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curChapter.setEnd(0L); |
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mChapterList.add(curChapter); |
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} |
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} |
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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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int chapterOffset = 0; |
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//当前剩余可分配的长度
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int strLength = length; |
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//分章的位置
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int 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) { |
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//在buffer中一章的终止点
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int end = length; |
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//寻找换行符作为终止点
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for (int i = chapterOffset + MAX_LENGTH_WITH_NO_CHAPTER; i < length; ++i) { |
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if (buffer[i] == Charset.BLANK) { |
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end = i; |
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break; |
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} |
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} |
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Chapter chapter = new Chapter(); |
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chapter.setTitle("第" + blockPos + "章" + "(" + chapterPos + ")"); |
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chapter.setStart(curOffset + chapterOffset + 1); |
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if (chapter.getStart() == 1) chapter.setStart(0); |
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chapter.setEnd(curOffset + end); |
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mChapterList.add(chapter); |
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//减去已经被分配的长度
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strLength = 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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Chapter chapter = new Chapter(); |
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chapter.setTitle("第" + blockPos + "章" + "(" + chapterPos + ")"); |
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chapter.setStart(curOffset + chapterOffset + 1); |
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if (chapter.getStart() == 1) chapter.setStart(0); |
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chapter.setEnd(curOffset + length); |
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mChapterList.add(chapter); |
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strLength = 0; |
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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; |
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if (hasChapter) { |
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if (mChapterList.size() != 0) { |
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//设置上一章的结尾
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Chapter lastChapter = mChapterList.get(mChapterList.size() - 1); |
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lastChapter.setEnd(curOffset); |
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} |
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} |
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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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int i = 0; |
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for (Chapter chapter : mChapterList) { |
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chapter.setTitle(chapter.getTitle().trim()); |
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chapter.setBookId(mCollBook.getId()); |
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chapter.setId(StringHelper.getStringRandom(25)); |
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chapter.setNumber(i++); |
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} |
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IOUtils.close(bookStream); |
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System.gc(); |
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System.runFinalization(); |
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return mChapterList; |
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} |
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public void loadChapters(final ResultCallback resultCallback) { |
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// 通过RxJava异步处理分章事件
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Single.create((SingleOnSubscribe<List<BookChapterBean>>) e -> { |
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Single.create((SingleOnSubscribe<List<Chapter>>) e -> { |
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e.onSuccess(loadChapters()); |
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}).compose(RxUtils::toSimpleSingle).subscribe(new SingleObserver<List<BookChapterBean>>() { |
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}).compose(RxUtils::toSimpleSingle).subscribe(new SingleObserver<List<Chapter>>() { |
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@Override |
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public void onSubscribe(Disposable d) { |
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mChapterDisp = d; |
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} |
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@Override |
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public void onSuccess(List<BookChapterBean> chapters) { |
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public void onSuccess(List<Chapter> chapters) { |
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mChapterDisp = null; |
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isChapterListPrepare = true; |
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List<Chapter> mChapters = new ArrayList<>(); |
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int i = 0; |
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for (BookChapterBean bookChapterBean : chapters) { |
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Chapter chapter = new Chapter(); |
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chapter.setBookId(mCollBook.getId()); |
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chapter.setTitle(bookChapterBean.getTitle().replace("\n", "").replaceAll("^\\s+|\\s+$", "")); |
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chapter.setId(StringHelper.getStringRandom(25)); |
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String content = getChapterContent(bookChapterBean); |
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if (StringHelper.isEmpty(content)) { |
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continue; |
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} |
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chapter.setNumber(i++); |
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mChapterService.saveOrUpdateChapter(chapter, content); |
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mChapters.add(chapter); |
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} |
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mCollBook.setInfoUrl(mCharset); |
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if (resultCallback != null) { |
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resultCallback.onFinish(mChapters, 1); |
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resultCallback.onFinish(chapters, 1); |
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} |
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} |
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@ -307,15 +472,15 @@ public class LocalPageLoader extends PageLoader { |
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* @param chapter |
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* @return |
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*/ |
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private String getChapterContent(BookChapterBean chapter) { |
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private byte[] getContent(Chapter chapter) { |
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RandomAccessFile bookStream = null; |
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try { |
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bookStream = new RandomAccessFile(mBookFile, "r"); |
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bookStream.seek(chapter.start); |
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int extent = (int) (chapter.end - chapter.start); |
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bookStream.seek(chapter.getStart()); |
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int extent = (int) (chapter.getEnd() - chapter.getStart()); |
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byte[] content = new byte[extent]; |
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bookStream.read(content, 0, extent); |
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return new String(content, mCharset); |
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return content; |
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} catch (IOException e) { |
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e.printStackTrace(); |
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} finally { |
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@ -367,6 +532,8 @@ public class LocalPageLoader extends PageLoader { |
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// 对于文件是否存在，或者为空的判断，不作处理。 ==> 在文件打开前处理过了。
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mBookFile = new File(mCollBook.getChapterUrl()); |
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mCharset = mCollBook.getInfoUrl(); |
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// 判断文件是否已经加载过，并具有缓存
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|
if (mCollBook.getChapterTotalNum() != 0) { |
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@ -387,16 +554,25 @@ public class LocalPageLoader extends PageLoader { |
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@Override |
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|
|
protected BufferedReader getChapterReader(Chapter chapter) throws Exception { |
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|
|
if (chapter.getEnd() > 0) { |
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|
|
Log.d("getChapterReader", chapter.getTitle()); |
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|
|
//从文件中获取数据
|
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|
|
byte[] content = getContent(chapter); |
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|
|
ByteArrayInputStream bais = new ByteArrayInputStream(content); |
|
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|
|
BufferedReader br = new BufferedReader(new InputStreamReader(bais, mCharset)); |
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|
|
return br; |
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|
} |
|
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|
|
File file = new File(APPCONST.BOOK_CACHE_PATH + mCollBook.getId() |
|
|
|
|
+ File.separator + chapter.getTitle() + FileUtils.SUFFIX_FY); |
|
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|
|
if (!file.exists()) return null; |
|
|
|
|
Log.d("getChapterReader", file.getPath()); |
|
|
|
|
return new BufferedReader(new FileReader(file)); |
|
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|
|
} |
|
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|
|
@Override |
|
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|
|
public boolean hasChapterData(Chapter chapter) { |
|
|
|
|
return ChapterService.isChapterCached(mCollBook.getId(), chapter.getTitle()); |
|
|
|
|
return chapter.getEnd() > 0 || ChapterService.isChapterCached(mCollBook.getId(), chapter.getTitle()); |
|
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|
|
} |
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fengyuecanzhu
4 years ago