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优化

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This commit is contained in:
gedoor 2022-01-06 15:34:13 +08:00
parent 6d4887fc27
commit d9f00f505c
1 changed files with 13 additions and 11 deletions
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24
app/src/main/java/io/legado/app/model/localBook/TextFile.kt
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@ -21,7 +21,7 @@ class TextFile(private val book: Book) {
@Throws(FileNotFoundException::class)
fun getChapterList(): ArrayList<BookChapter> {
var rulePattern: Pattern? = null
if (book.charset == null || book.tocUrl.isNotEmpty()) {
if (book.charset == null || book.tocUrl.isEmpty()) {
LocalBook.getBookInputStream(book).use { bis ->
val buffer = ByteArray(BUFFER_SIZE)
var blockContent: String
@ -65,16 +65,18 @@ class TextFile(private val book: Book) {
blockPos++
//如果存在Chapter
if (pattern != null) {
//将数据转换成String, 不能超过length
blockContent = String(buffer, 0, bufferStart + length, charset)
val lastN = blockContent.lastIndexOf("\n")
if (lastN > 0) {
blockContent = blockContent.substring(0, lastN)
val blockContentSize = blockContent.toByteArray(charset).size
buffer.copyInto(buffer, 0, blockContentSize - bufferStart, length)
bufferStart = length + bufferStart - blockContentSize
length = blockContentSize
var end = bufferStart + length
for (i in bufferStart + length - 1 downTo 0) {
if (buffer[i] == BLANK) {
end = i
break
}
}
//将数据转换成String, 不能超过length
blockContent = String(buffer, 0, end, charset)
buffer.copyInto(buffer, 0, end, bufferStart + length)
bufferStart = bufferStart + length - end
length = end
//当前Block下使过的String的指针
var seekPos = 0
//进行正则匹配
@ -251,7 +253,7 @@ class TextFile(private val book: Book) {
private const val BLANK: Byte = 0x0a
//默认从文件中获取数据的长度
private const val BUFFER_SIZE = 512 * 1024
private const val BUFFER_SIZE = 512000
//没有标题的时候，每个章节的最大长度
private const val MAX_LENGTH_WITH_NO_CHAPTER = 10 * 1024