The Tor Browser / file diff

     1.1 --- /dev/null	Thu Jan 01 00:00:00 1970 +0000
     1.2 +++ b/mobile/android/thirdparty/com/squareup/picasso/UrlConnectionDownloader.java	Wed Dec 31 06:09:35 2014 +0100
     1.3 @@ -0,0 +1,100 @@
     1.4 +/*
     1.5 + * Copyright (C) 2013 Square, Inc.
     1.6 + *
     1.7 + * Licensed under the Apache License, Version 2.0 (the "License");
     1.8 + * you may not use this file except in compliance with the License.
     1.9 + * You may obtain a copy of the License at
    1.10 + *
    1.11 + *      http://www.apache.org/licenses/LICENSE-2.0
    1.12 + *
    1.13 + * Unless required by applicable law or agreed to in writing, software
    1.14 + * distributed under the License is distributed on an "AS IS" BASIS,
    1.15 + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
    1.16 + * See the License for the specific language governing permissions and
    1.17 + * limitations under the License.
    1.18 + */
    1.19 +package com.squareup.picasso;
    1.20 +
    1.21 +import android.content.Context;
    1.22 +import android.net.Uri;
    1.23 +import android.net.http.HttpResponseCache;
    1.24 +import android.os.Build;
    1.25 +import java.io.File;
    1.26 +import java.io.IOException;
    1.27 +import java.net.HttpURLConnection;
    1.28 +import java.net.URL;
    1.29 +
    1.30 +import static com.squareup.picasso.Utils.parseResponseSourceHeader;
    1.31 +
    1.32 +/**
    1.33 + * A {@link Downloader} which uses {@link HttpURLConnection} to download images. A disk cache of 2%
    1.34 + * of the total available space will be used (capped at 50MB) will automatically be installed in the
    1.35 + * application's cache directory, when available.
    1.36 + */
    1.37 +public class UrlConnectionDownloader implements Downloader {
    1.38 +  static final String RESPONSE_SOURCE = "X-Android-Response-Source";
    1.39 +
    1.40 +  private static final Object lock = new Object();
    1.41 +  static volatile Object cache;
    1.42 +
    1.43 +  private final Context context;
    1.44 +
    1.45 +  public UrlConnectionDownloader(Context context) {
    1.46 +    this.context = context.getApplicationContext();
    1.47 +  }
    1.48 +
    1.49 +  protected HttpURLConnection openConnection(Uri path) throws IOException {
    1.50 +    HttpURLConnection connection = (HttpURLConnection) new URL(path.toString()).openConnection();
    1.51 +    connection.setConnectTimeout(Utils.DEFAULT_CONNECT_TIMEOUT);
    1.52 +    connection.setReadTimeout(Utils.DEFAULT_READ_TIMEOUT);
    1.53 +    return connection;
    1.54 +  }
    1.55 +
    1.56 +  @Override public Response load(Uri uri, boolean localCacheOnly) throws IOException {
    1.57 +    if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.ICE_CREAM_SANDWICH) {
    1.58 +      installCacheIfNeeded(context);
    1.59 +    }
    1.60 +
    1.61 +    HttpURLConnection connection = openConnection(uri);
    1.62 +    connection.setUseCaches(true);
    1.63 +    if (localCacheOnly) {
    1.64 +      connection.setRequestProperty("Cache-Control", "only-if-cached,max-age=" + Integer.MAX_VALUE);
    1.65 +    }
    1.66 +
    1.67 +    int responseCode = connection.getResponseCode();
    1.68 +    if (responseCode >= 300) {
    1.69 +      connection.disconnect();
    1.70 +      throw new ResponseException(responseCode + " " + connection.getResponseMessage());
    1.71 +    }
    1.72 +
    1.73 +    boolean fromCache = parseResponseSourceHeader(connection.getHeaderField(RESPONSE_SOURCE));
    1.74 +
    1.75 +    return new Response(connection.getInputStream(), fromCache);
    1.76 +  }
    1.77 +
    1.78 +  private static void installCacheIfNeeded(Context context) {
    1.79 +    // DCL + volatile should be safe after Java 5.
    1.80 +    if (cache == null) {
    1.81 +      try {
    1.82 +        synchronized (lock) {
    1.83 +          if (cache == null) {
    1.84 +            cache = ResponseCacheIcs.install(context);
    1.85 +          }
    1.86 +        }
    1.87 +      } catch (IOException ignored) {
    1.88 +      }
    1.89 +    }
    1.90 +  }
    1.91 +
    1.92 +  private static class ResponseCacheIcs {
    1.93 +    static Object install(Context context) throws IOException {
    1.94 +      File cacheDir = Utils.createDefaultCacheDir(context);
    1.95 +      HttpResponseCache cache = HttpResponseCache.getInstalled();
    1.96 +      if (cache == null) {
    1.97 +        long maxSize = Utils.calculateDiskCacheSize(cacheDir);
    1.98 +        cache = HttpResponseCache.install(cacheDir, maxSize);
    1.99 +      }
   1.100 +      return cache;
   1.101 +    }
   1.102 +  }
   1.103 +}