Issue 4399 - Add WebView inheritor with ad blocking

libadblockplus-android/src/org/adblockplus/android/AndroidWebRequest.java

Index: libadblockplus-android/src/org/adblockplus/android/AndroidWebRequest.java
diff --git a/libadblockplus-android/src/org/adblockplus/android/AndroidWebRequest.java b/libadblockplus-android/src/org/adblockplus/android/AndroidWebRequest.java
index 6796cd076d45eb8da866a989f02d6362df3756aa..d7d78039a2d804d9955917467628bdff6ed0bc6a 100644
--- a/libadblockplus-android/src/org/adblockplus/android/AndroidWebRequest.java
+++ b/libadblockplus-android/src/org/adblockplus/android/AndroidWebRequest.java
@@ -92,35 +92,21 @@ public class AndroidWebRequest extends WebRequest
         final BufferedReader reader = new BufferedReader(new InputStreamReader(connection.getInputStream(), "UTF-8"));
         final StringBuilder sb = new StringBuilder();
 
-        if (!this.elemhideEnabled && isListedSubscriptionUrl(url))
+        String line;
+        while ((line = reader.readLine()) != null)
         {
-          Log.d(TAG, "Removing element hiding rules from: '" + url + "'");
-
-          String line;
-          while ((line = reader.readLine()) != null)
-          {
-            // We're only appending non-element-hiding filters here.
-            //
-            // See:
-            //      https://issues.adblockplus.org/ticket/303
-            //
-            // Follow-up issue for removing this hack:
-            //      https://issues.adblockplus.org/ticket/1541
-            //
-            if (line.indexOf('#') == -1)
-            {
-              sb.append(line);
-              sb.append('\n');
-            }
-          }
-        }
-        else
-        {
-          int character;
-
-          while ((character = reader.read()) != -1)
+          // We're only appending non-element-hiding filters here.
+          //
+          // See:
+          //      https://issues.adblockplus.org/ticket/303
+          //
+          // Follow-up issue for removing this hack:
+          //      https://issues.adblockplus.org/ticket/1541
+          //
+          if (this.elemhideEnabled || !isListedSubscriptionUrl(url) || line.indexOf('#') == -1)

[anton, 2016/09/08 13:00:12]

it was extremely bad idea to read bytes one-by-one because of low performance.
I've changed it to reading line-by-line and not excluding elemhide rules if not
asked for it

           {
-            sb.append((char) character);
+            sb.append(line);
+            sb.append('\n');
           }
         }
 
@@ -133,10 +119,12 @@ public class AndroidWebRequest extends WebRequest
       {
         response.setStatus(NsStatus.ERROR_FAILURE);
       }
+      Log.d(TAG, "Downloading finished");
       return response;
     }
     catch (final Throwable t)
     {
+      Log.e(TAG, "WebRequest failed", t);
       throw new AdblockPlusException("WebRequest failed", t);
     }
   }