优化

app/src/main/java/io/legado/app/model/analyzeRule/AnalyzeRule.kt

@@ -5,18 +5,32 @@ import androidx.annotation.Keep
 import com.script.SimpleBindings
 import com.script.rhino.RhinoScriptEngine
 import io.legado.app.constant.AppPattern.JS_PATTERN
-import io.legado.app.data.entities.*
+import io.legado.app.data.entities.BaseBook
+import io.legado.app.data.entities.BaseSource
+import io.legado.app.data.entities.Book
+import io.legado.app.data.entities.BookChapter
+import io.legado.app.data.entities.BookSource
 import io.legado.app.help.CacheManager
 import io.legado.app.help.JsExtensions
 import io.legado.app.help.http.CookieStore
 import io.legado.app.model.webBook.WebBook
-import io.legado.app.utils.*
+import io.legado.app.utils.GSON
+import io.legado.app.utils.NetworkUtils
+import io.legado.app.utils.fromJsonObject
+import io.legado.app.utils.isJson
+import io.legado.app.utils.printOnDebug
+import io.legado.app.utils.splitNotBlank
+import io.legado.app.utils.stackTraceStr
 import kotlinx.coroutines.runBlocking
 import kotlinx.coroutines.withTimeout
 import org.apache.commons.text.StringEscapeUtils
+import org.jsoup.nodes.Node
 import org.mozilla.javascript.NativeObject
 import java.net.URL
 import java.util.regex.Pattern
+import kotlin.collections.component1
+import kotlin.collections.component2
+import kotlin.collections.set
 
 /**
  * 解析规则获取结果
@@ -55,7 +69,10 @@ class AnalyzeRule(
     fun setContent(content: Any?, baseUrl: String? = null): AnalyzeRule {
         if (content == null) throw AssertionError("内容不可空（Content cannot be null）")
         this.content = content
-        isJSON = content.toString().isJson()
+        isJSON = when (content) {
+            is Node -> false
+            else -> content.toString().isJson()
+        }
         setBaseUrl(baseUrl)
         objectChangedXP = true
         objectChangedJS = true

app/src/main/java/io/legado/app/utils/ByteArrayExtensions.kt

@@ -0,0 +1,45 @@
+package io.legado.app.utils
+
+
+/**
+ * Search the data byte array for the first occurrence
+ * of the byte array pattern.
+ */
+fun ByteArray.indexOf(pattern: ByteArray, start: Int = 0, stop: Int = size): Int {
+    val data = this
+    val failure: IntArray = computeFailure(pattern)
+
+    var j = 0
+
+    for (i in start until stop) {
+        while (j > 0 && pattern[j] != data[i]) {
+            j = failure[j - 1]
+        }
+        if (pattern[j] == data[i]) {
+            j++
+        }
+        if (j == pattern.size) {
+            return i - pattern.size + 1
+        }
+    }
+    return -1
+}
+
+/**
+ * Computes the failure function using a boot-strapping process,
+ * where the pattern is matched against itself.
+ */
+private fun computeFailure(pattern: ByteArray): IntArray {
+    val failure = IntArray(pattern.size)
+    var j = 0
+    for (i in 1 until pattern.size) {
+        while (j > 0 && pattern[j] != pattern[i]) {
+            j = failure[j - 1]
+        }
+        if (pattern[j] == pattern[i]) {
+            j++
+        }
+        failure[i] = j
+    }
+    return failure
+}

app/src/main/java/io/legado/app/utils/EncodingDetect.kt

@@ -5,8 +5,6 @@ import io.legado.app.lib.icu4j.CharsetDetector
 import org.jsoup.Jsoup
 import java.io.File
 import java.io.FileInputStream
-import java.nio.charset.StandardCharsets
-import java.util.*
 
 /**
  * 自动获取文件的编码
@@ -14,9 +12,21 @@ import java.util.*
 @Suppress("MemberVisibilityCanBePrivate", "unused")
 object EncodingDetect {
 
-    fun getHtmlEncode(bytes: ByteArray): String? {
+    private val headTagRegex = "(?i)<head>[\\s\\S]*?</head>".toRegex()
+    private val headOpenBytes = "<head>".toByteArray()
+    private val headCloseBytes = "</head>".toByteArray()
+
+    fun getHtmlEncode(bytes: ByteArray): String {
         try {
-            val doc = Jsoup.parse(String(bytes, StandardCharsets.UTF_8))
+            var head: String? = null
+            val startIndex = bytes.indexOf(headOpenBytes)
+            if (startIndex > -1) {
+                val endIndex = bytes.indexOf(headCloseBytes, startIndex)
+                if (endIndex > -1) {
+                    head = String(bytes.copyOfRange(startIndex, endIndex + headCloseBytes.size))
+                }
+            }
+            val doc = Jsoup.parseBodyFragment(head ?: headTagRegex.find(String(bytes))!!.value)
             val metaTags = doc.getElementsByTag("meta")
             var charsetStr: String
             for (metaTag in metaTags) {
@@ -24,16 +34,14 @@ object EncodingDetect {
                 if (!TextUtils.isEmpty(charsetStr)) {
                     return charsetStr
                 }
-                val content = metaTag.attr("content")
                 val httpEquiv = metaTag.attr("http-equiv")
-                if (httpEquiv.lowercase(Locale.getDefault()) == "content-type") {
-                    charsetStr = if (content.lowercase(Locale.getDefault()).contains("charset")) {
-                        content.substring(
-                            content.lowercase(Locale.getDefault())
-                                .indexOf("charset") + "charset=".length
-                        )
+                if (httpEquiv.equals("content-type", true)) {
+                    val content = metaTag.attr("content")
+                    val idx = content.indexOf("charset=", ignoreCase = true)
+                    charsetStr = if (idx > -1) {
+                        content.substring(idx + "charset=".length)
                     } else {
-                        content.substring(content.lowercase(Locale.getDefault()).indexOf(";") + 1)
+                        content.substringAfter(";")
                     }
                     if (!TextUtils.isEmpty(charsetStr)) {
                         return charsetStr

app/src/main/java/io/legado/app/utils/HtmlFormatter.kt

@@ -17,6 +17,9 @@ object HtmlFormatter {
         "<img[^>]*\\ssrc\\s*=\\s*\"([^\"{>]*\\{(?:[^{}]|\\{[^}>]+\\})+\\})\"[^>]*>|<img[^>]*\\sdata-[^=>]*=\\s*\"([^\">]*)\"[^>]*>|<img[^>]*\\ssrc\\s*=\\s*\"([^\">]*)\"[^>]*>",
         Pattern.CASE_INSENSITIVE
     )
+    private val indent1Regex = "\\s*\\n+\\s*".toRegex()
+    private val indent2Regex = "^[\\n\\s]+".toRegex()
+    private val lastRegex = "[\\n\\s]+$".toRegex()
 
     fun format(html: String?, otherRegex: Regex = otherHtmlRegex): String {
         html ?: return ""
@@ -26,9 +29,9 @@ object HtmlFormatter {
             .replace(wrapHtmlRegex, "\n")
             .replace(commentRegex, "")
             .replace(otherRegex, "")
-            .replace("\\s*\\n+\\s*".toRegex(), "\n　　")
-            .replace("^[\\n\\s]+".toRegex(), "　　")
-            .replace("[\\n\\s]+$".toRegex(), "")
+            .replace(indent1Regex, "\n　　")
+            .replace(indent2Regex, "　　")
+            .replace(lastRegex, "")
     }
 
     fun formatKeepImg(html: String?, redirectUrl: URL? = null): String {