The Tor Browser / file comparison
comparison: mobile/android/thirdparty/com/squareup/picasso/UrlConnectionDownloader.java
mobile/android/thirdparty/com/squareup/picasso/UrlConnectionDownloader.java
- branch
- TOR_BUG_3246
- changeset 4
- fc2d59ddac77
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| -1:000000000000 | 0:33197e33b942 |
|---|---|
| 1 /* | |
| 2 * Copyright (C) 2013 Square, Inc. | |
| 3 * | |
| 4 * Licensed under the Apache License, Version 2.0 (the "License"); | |
| 5 * you may not use this file except in compliance with the License. | |
| 6 * You may obtain a copy of the License at | |
| 7 * | |
| 8 * http://www.apache.org/licenses/LICENSE-2.0 | |
| 9 * | |
| 10 * Unless required by applicable law or agreed to in writing, software | |
| 11 * distributed under the License is distributed on an "AS IS" BASIS, | |
| 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. | |
| 13 * See the License for the specific language governing permissions and | |
| 14 * limitations under the License. | |
| 15 */ | |
| 16 package com.squareup.picasso; | |
| 17 | |
| 18 import android.content.Context; | |
| 19 import android.net.Uri; | |
| 20 import android.net.http.HttpResponseCache; | |
| 21 import android.os.Build; | |
| 22 import java.io.File; | |
| 23 import java.io.IOException; | |
| 24 import java.net.HttpURLConnection; | |
| 25 import java.net.URL; | |
| 26 | |
| 27 import static com.squareup.picasso.Utils.parseResponseSourceHeader; | |
| 28 | |
| 29 /** | |
| 30 * A {@link Downloader} which uses {@link HttpURLConnection} to download images. A disk cache of 2% | |
| 31 * of the total available space will be used (capped at 50MB) will automatically be installed in the | |
| 32 * application's cache directory, when available. | |
| 33 */ | |
| 34 public class UrlConnectionDownloader implements Downloader { | |
| 35 static final String RESPONSE_SOURCE = "X-Android-Response-Source"; | |
| 36 | |
| 37 private static final Object lock = new Object(); | |
| 38 static volatile Object cache; | |
| 39 | |
| 40 private final Context context; | |
| 41 | |
| 42 public UrlConnectionDownloader(Context context) { | |
| 43 this.context = context.getApplicationContext(); | |
| 44 } | |
| 45 | |
| 46 protected HttpURLConnection openConnection(Uri path) throws IOException { | |
| 47 HttpURLConnection connection = (HttpURLConnection) new URL(path.toString()).openConnection(); | |
| 48 connection.setConnectTimeout(Utils.DEFAULT_CONNECT_TIMEOUT); | |
| 49 connection.setReadTimeout(Utils.DEFAULT_READ_TIMEOUT); | |
| 50 return connection; | |
| 51 } | |
| 52 | |
| 53 @Override public Response load(Uri uri, boolean localCacheOnly) throws IOException { | |
| 54 if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.ICE_CREAM_SANDWICH) { | |
| 55 installCacheIfNeeded(context); | |
| 56 } | |
| 57 | |
| 58 HttpURLConnection connection = openConnection(uri); | |
| 59 connection.setUseCaches(true); | |
| 60 if (localCacheOnly) { | |
| 61 connection.setRequestProperty("Cache-Control", "only-if-cached,max-age=" + Integer.MAX_VALUE); | |
| 62 } | |
| 63 | |
| 64 int responseCode = connection.getResponseCode(); | |
| 65 if (responseCode >= 300) { | |
| 66 connection.disconnect(); | |
| 67 throw new ResponseException(responseCode + " " + connection.getResponseMessage()); | |
| 68 } | |
| 69 | |
| 70 boolean fromCache = parseResponseSourceHeader(connection.getHeaderField(RESPONSE_SOURCE)); | |
| 71 | |
| 72 return new Response(connection.getInputStream(), fromCache); | |
| 73 } | |
| 74 | |
| 75 private static void installCacheIfNeeded(Context context) { | |
| 76 // DCL + volatile should be safe after Java 5. | |
| 77 if (cache == null) { | |
| 78 try { | |
| 79 synchronized (lock) { | |
| 80 if (cache == null) { | |
| 81 cache = ResponseCacheIcs.install(context); | |
| 82 } | |
| 83 } | |
| 84 } catch (IOException ignored) { | |
| 85 } | |
| 86 } | |
| 87 } | |
| 88 | |
| 89 private static class ResponseCacheIcs { | |
| 90 static Object install(Context context) throws IOException { | |
| 91 File cacheDir = Utils.createDefaultCacheDir(context); | |
| 92 HttpResponseCache cache = HttpResponseCache.getInstalled(); | |
| 93 if (cache == null) { | |
| 94 long maxSize = Utils.calculateDiskCacheSize(cacheDir); | |
| 95 cache = HttpResponseCache.install(cacheDir, maxSize); | |
| 96 } | |
| 97 return cache; | |
| 98 } | |
| 99 } | |
| 100 } |
