pull/1511/head
gedoor 3 years ago
parent d562bdf7a7
commit e6ccd50656
  1. 78
      app/src/main/java/io/legado/app/model/localBook/TextFile.kt

@ -51,10 +51,12 @@ class TextFile(private val book: Book) {
} else {
book.tocUrl.toPattern(Pattern.MULTILINE)
}
return analyze(rulePattern)
return rulePattern?.let {
analyze(rulePattern)
} ?: analyze()
}
private fun analyze(pattern: Pattern?): ArrayList<BookChapter> {
private fun analyze(pattern: Pattern): ArrayList<BookChapter> {
val toc = arrayListOf<BookChapter>()
LocalBook.getBookInputStream(book).use { bis ->
var blockContent: String
@ -76,8 +78,6 @@ class TextFile(private val book: Book) {
.also { length = it } > 0
) {
blockPos++
//如果存在Chapter
if (pattern != null) {
var end = bufferStart + length
for (i in bufferStart + length - 1 downTo 0) {
if (buffer[i] == blank) {
@ -105,7 +105,9 @@ class TextFile(private val book: Book) {
bis.close()
//移除不匹配的规则
tocRules.removeFirstOrNull()
return analyze(tocRules.firstOrNull()?.rule?.toPattern(Pattern.MULTILINE))
return tocRules.firstOrNull()?.let {
analyze(it.rule.toPattern(Pattern.MULTILINE))
} ?: analyze()
}
//如果 seekPos == 0 && nextChapterPos != 0 表示当前block处前面有一段内容
//第一种情况一定是序章 第二种情况是上一个章节的内容
@ -162,10 +164,63 @@ class TextFile(private val book: Book) {
bis.close()
//移除不匹配的规则
tocRules.remove(tocRules.removeFirstOrNull())
return analyze(tocRules.firstOrNull()?.rule?.toPattern(Pattern.MULTILINE))
return tocRules.firstOrNull()?.let {
analyze(it.rule.toPattern(Pattern.MULTILINE))
} ?: analyze()
}
} else { //进行本地虚拟分章
//block的偏移点
curOffset += length.toLong()
//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()
}
}
}
for (i in toc.indices) {
val bean = toc[i]
bean.index = i
bean.bookUrl = book.bookUrl
bean.url = (MD5Utils.md5Encode16(book.originName + i + bean.title))
}
book.latestChapterTitle = toc.last().title
book.totalChapterNum = toc.size
System.gc()
System.runFinalization()
book.tocUrl = pattern.pattern()
book.save()
return toc
}
private fun analyze(): ArrayList<BookChapter> {
val toc = arrayListOf<BookChapter>()
LocalBook.getBookInputStream(book).use { bis ->
//加载章节
var curOffset: Long = 0
//block的个数
var blockPos = 0
//读取的长度
var length: Int
val buffer = ByteArray(bufferSize)
var bufferStart = 3
bis.read(buffer, 0, 3)
if (Utf8BomUtils.hasBom(buffer)) {
bufferStart = 0
curOffset = 3
}
//获取文件中的数据到buffer,直到没有数据为止
while (bis.read(buffer, bufferStart, bufferSize - bufferStart)
.also { length = it } > 0
) {
bufferStart = 0
blockPos++
//章节在buffer的偏移量
var chapterOffset = 0
//当前剩余可分配的长度
@ -202,17 +257,10 @@ class TextFile(private val book: Book) {
strLength = 0
}
}
}
//block的偏移点
curOffset += length.toLong()
if (pattern != 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()
@ -231,7 +279,7 @@ class TextFile(private val book: Book) {
System.gc()
System.runFinalization()
book.tocUrl = pattern?.pattern() ?: ""
book.tocUrl = ""
book.save()
return toc
}

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