1 files changed, 79 insertions, 0 deletions
diff --git a/src/com/android/gallery3d/data/DownloadUtils.java b/src/com/android/gallery3d/data/DownloadUtils.java
new file mode 100644
index 000000000..137898e91
--- /dev/null
+++ b/src/com/android/gallery3d/data/DownloadUtils.java
@@ -0,0 +1,79 @@
+/*
+ * Copyright (C) 2010 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package com.android.gallery3d.data;
+
+import com.android.gallery3d.common.Utils;
+import com.android.gallery3d.util.ThreadPool.CancelListener;
+import com.android.gallery3d.util.ThreadPool.JobContext;
+
+import java.io.File;
+import java.io.FileOutputStream;
+import java.io.IOException;
+import java.io.InputStream;
+import java.io.InterruptedIOException;
+import java.io.OutputStream;
+import java.net.URL;
+
+public class DownloadUtils {
+    private static final String TAG = "DownloadService";
+
+    public static boolean requestDownload(JobContext jc, URL url, File file) {
+        FileOutputStream fos = null;
+        try {
+            fos = new FileOutputStream(file);
+            return download(jc, url, fos);
+        } catch (Throwable t) {
+            return false;
+        } finally {
+            Utils.closeSilently(fos);
+        }
+    }
+
+    public static void dump(JobContext jc, InputStream is, OutputStream os)
+            throws IOException {
+        byte buffer[] = new byte[4096];
+        int rc = is.read(buffer, 0, buffer.length);
+        final Thread thread = Thread.currentThread();
+        jc.setCancelListener(new CancelListener() {
+            @Override
+            public void onCancel() {
+                thread.interrupt();
+            }
+        });
+        while (rc > 0) {
+            if (jc.isCancelled()) throw new InterruptedIOException();
+            os.write(buffer, 0, rc);
+            rc = is.read(buffer, 0, buffer.length);
+        }
+        jc.setCancelListener(null);
+        Thread.interrupted(); // consume the interrupt signal
+    }
+
+    public static boolean download(JobContext jc, URL url, OutputStream output) {
+        InputStream input = null;
+        try {
+            input = url.openStream();
+            dump(jc, input, output);
+            return true;
+        } catch (Throwable t) {
+            Log.w(TAG, "fail to download", t);
+            return false;
+        } finally {
+            Utils.closeSilently(input);
+        }
+    }
+}
+\ No newline at end of file