Merge pull request #1664 from Xwite/master

更新dataUrl(txt)图片正则

app/src/main/java/io/legado/app/constant/AppPattern.kt

@@ -11,7 +11,7 @@ object AppPattern {
     //匹配格式化后的图片格式
     val imgPattern: Pattern = Pattern.compile("<img[^>]*src=\"([^\"]*(?:\"[^>]+\\})?)\"[^>]*>")
     //dataURL图片类型
-    val dataUriRegex = Regex("data:[\\w/\\-\\.]+;base64,(.*)")
+    val dataUriRegex = Regex("data:.*?;base64,(.*)")
 
     val nameRegex = Regex("\\s+作\\s*者.*|\\s+\\S+\\s+著")
     val authorRegex = Regex("^\\s*作\\s*者[:：\\s]+|\\s+著")