Merge pull request #1937 from Xwite/master

fix #1831

app/src/main/java/io/legado/app/data/entities/Book.kt

@@ -202,7 +202,8 @@ data class Book(
         if (useReplaceRule != null) {
             return useReplaceRule
         }
-        if (type == BookType.image) {
+        //图片类书源 epub本地 默认关闭净化
+        if (type == BookType.image || isEpub()) {
             return false
         }
         return AppConfig.replaceEnableDefault

app/src/main/java/io/legado/app/help/BookHelp.kt

@@ -144,7 +144,9 @@ object BookHelp {
 
     fun getImageSuffix(src: String): String {
         var suffix = src.substringAfterLast(".").substringBefore(",")
-        if (suffix.length > 5) {
+        //检查截取的后缀字符是否合法 [a-zA-Z0-9]
+        val fileSuffixRegex = Regex("^[a-z0-9]+$", RegexOption.IGNORE_CASE)
+        if (suffix.length > 5 || !suffix.matches(fileSuffixRegex)) {
             suffix = "jpg"
         }
         return suffix

app/src/main/java/io/legado/app/model/localBook/EpubFile.kt

@@ -33,7 +33,7 @@ class EpubFile(var book: Book) {
             if (eFile == null || eFile?.book?.bookUrl != book.bookUrl) {
                 eFile = EpubFile(book)
                 //对于Epub文件默认不启用替换
-                book.setUseReplaceRule(false)
+                //io.legado.app.data.entities.Book getUseReplaceRule
                 return eFile!!
             }
             eFile?.book = book

app/src/main/java/io/legado/app/ui/book/read/page/provider/ImageProvider.kt

@@ -13,8 +13,7 @@ import io.legado.app.help.BookHelp
 import io.legado.app.help.config.AppConfig
 import io.legado.app.help.coroutine.Coroutine
 import io.legado.app.model.localBook.EpubFile
-import io.legado.app.utils.BitmapUtils
-import io.legado.app.utils.FileUtils
+import io.legado.app.utils.*
 import kotlinx.coroutines.Dispatchers.IO
 import kotlinx.coroutines.withContext
 import splitties.init.appCtx
@@ -113,6 +112,11 @@ object ImageProvider {
         width: Int,
         height: Int? = null
     ): Bitmap {
+        //src为空白时 可能被净化替换掉了 或者规则失效
+        if (book.getUseReplaceRule() && src.isBlank()) {
+           book.setUseReplaceRule(false)
+           appCtx.toastOnUi(R.string.error_image_url_empty)
+        }
         val vFile = BookHelp.getImage(book, src)
         if (!vFile.exists()) return errorBitmap
         //epub文件提供图片链接是相对链接，同时阅读多个epub文件，缓存命中错误
@@ -122,7 +126,7 @@ object ImageProvider {
         @Suppress("BlockingMethodInNonBlockingContext")
         return kotlin.runCatching {
             val bitmap = BitmapUtils.decodeBitmap(vFile.absolutePath, width, height)
-                ?: throw NoStackTraceException("解析图片失败")
+                ?: throw NoStackTraceException(appCtx.getString(R.string.error_decode_bitmap))
             bitmapLruCache.put(vFile.absolutePath, bitmap)
             bitmap
         }.onFailure {

app/src/main/res/values-es-rES/strings.xml

@@ -993,4 +993,6 @@
     <string name="bitmap_cache_size">bitmap cache size</string>
     <string name="export_pics_file">Export Picture Files</string>
     <!-- string end -->
+    <string name="error_decode_bitmap">Fail to decode bitmap</string>
+    <string name="error_image_url_empty">Image url is empty, check replacement rules</string>
 </resources>

app/src/main/res/values-ja-rJP/strings.xml

@@ -996,4 +996,6 @@
     <string name="bitmap_cache_size">bitmap cache size</string>
     <string name="export_pics_file">Export Picture Files</string>
     <!-- string end -->
+    <string name="error_decode_bitmap">Fail to decode bitmap</string>
+    <string name="error_image_url_empty">Image url is empty, check replacement rules</string>
 </resources>

app/src/main/res/values-pt-rBR/strings.xml

@@ -996,4 +996,6 @@
     <string name="bitmap_cache_size">bitmap cache size</string>
     <string name="export_pics_file">Export Picture Files</string>
     <!-- string end -->
+    <string name="error_decode_bitmap">Fail to decode bitmap</string>
+    <string name="error_image_url_empty">Image url is empty, check replacement rules</string>
 </resources>

app/src/main/res/values-zh-rHK/strings.xml

@@ -993,4 +993,6 @@
     <string name="bitmap_cache_size">图片绘制缓存</string>
     <string name="export_pics_file">TXT导出图片</string>
     <!-- string end -->
+    <string name="error_decode_bitmap">图片解码失败</string>
+    <string name="error_image_url_empty">图片链接为空，检查替换净化规则</string>
 </resources>

app/src/main/res/values-zh-rTW/strings.xml

@@ -995,4 +995,6 @@
     <string name="bitmap_cache_size">圖片繪製快取</string>
     <string name="export_pics_file">TXT匯出圖片</string>
     <!-- string end -->
+    <string name="error_decode_bitmap">图片解码失败</string>
+    <string name="error_image_url_empty">图片链接为空，检查替换净化规则</string>
 </resources>

app/src/main/res/values-zh/strings.xml

@@ -995,4 +995,6 @@
     <string name="bitmap_cache_size">图片绘制缓存</string>
     <string name="export_pics_file">TXT导出图片</string>
     <!-- string end -->
+    <string name="error_decode_bitmap">图片解码失败</string>
+    <string name="error_image_url_empty">图片链接为空，检查替换净化规则</string>
 </resources>

app/src/main/res/values/strings.xml

@@ -996,4 +996,6 @@
     <string name="bitmap_cache_size">bitmap cache size</string>
     <string name="export_pics_file">Export Picture Files</string>
     <!-- string end -->
+    <string name="error_decode_bitmap">Fail to decode bitmap</string>
+    <string name="error_image_url_empty">Image url is empty, check replacement rules</string>
 </resources>