优化

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

@@ -9,7 +9,10 @@ import io.legado.app.exception.RegexTimeoutException
  */
 fun CharSequence.replace(regex: Regex, replacement: String, timeout: Long): String {
     val startTime = System.currentTimeMillis()
-    val charSequence = this
+    val charSequence = ListenerCharSequence(this) {
+        //根本没有执行到这步,和网上的方案不符
+        print(it)
+    }
     val isJs = replacement.startsWith("@js:")
     val replacement1 = if (isJs) replacement.substring(4) else replacement
     val pattern = regex.toPattern()
@@ -33,19 +36,24 @@ fun CharSequence.replace(regex: Regex, replacement: String, timeout: Long): Stri
     return stringBuffer.toString()
 }
 
-class ListenerCharSequence(private val inner: CharSequence) : CharSequence {
+class ListenerCharSequence(
+    private val inner: CharSequence,
+    private val charAtListener: ((Int) -> Unit)
+) : CharSequence {
 
-    var charAtListener: ((Int) -> Unit)? = null
+    override fun toString(): String {
+        return inner.toString()
+    }
 
     override val length: Int = inner.length
 
     override fun get(index: Int): Char {
-        charAtListener?.invoke(index)
+        charAtListener.invoke(index)
         return inner[index]
     }
 
     override fun subSequence(startIndex: Int, endIndex: Int): CharSequence {
-        return inner.subSequence(startIndex, endIndex)
+        return ListenerCharSequence(inner.subSequence(startIndex, endIndex), charAtListener)
     }
 
 }