1 files changed, 69 insertions, 0 deletions
diff --git a/src/com/android/messaging/datamodel/MmsFileProvider.java b/src/com/android/messaging/datamodel/MmsFileProvider.java
new file mode 100644
index 0000000..0022630
--- /dev/null
+++ b/src/com/android/messaging/datamodel/MmsFileProvider.java
@@ -0,0 +1,69 @@
+/*
+ * Copyright (C) 2015 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.messaging.datamodel;
+
+import android.content.Context;
+import android.net.Uri;
+
+import com.android.messaging.Factory;
+import com.android.messaging.util.LogUtil;
+import com.google.common.annotations.VisibleForTesting;
+
+import java.io.File;
+
+/**
+ * A very simple content provider that can serve mms files from our cache directory.
+ */
+public class MmsFileProvider extends FileProvider {
+    private static final String TAG = LogUtil.BUGLE_TAG;
+
+    @VisibleForTesting
+    static final String AUTHORITY = "com.android.messaging.datamodel.MmsFileProvider";
+    private static final String RAW_MMS_DIR = "rawmms";
+
+    /**
+     * Returns a uri that can be used to access a raw mms file.
+     *
+     * @return the URI for an raw mms file
+     */
+    public static Uri buildRawMmsUri() {
+        final Uri uri = FileProvider.buildFileUri(AUTHORITY, null);
+        final File file = getFile(uri.getPath());
+        if (!ensureFileExists(file)) {
+            LogUtil.e(TAG, "Failed to create temp file " + file.getAbsolutePath());
+        }
+        return uri;
+    }
+
+    @Override
+    File getFile(final String path, final String extension) {
+        return getFile(path);
+    }
+
+    public static File getFile(final Uri uri) {
+        return getFile(uri.getPath());
+    }
+
+    private static File getFile(final String path) {
+        final Context context = Factory.get().getApplicationContext();
+        return new File(getDirectory(context), path + ".dat");
+    }
+
+    private static File getDirectory(final Context context) {
+        return new File(context.getCacheDir(), RAW_MMS_DIR);
+    }
+}