Refactoring to avoid maintenance after CR

[pub/Android/ownCloud.git] / src / com / owncloud / android / utils / UriUtils.java

diff --git a/src/com/owncloud/android/utils/UriUtils.java b/src/com/owncloud/android/utils/UriUtils.java
new file mode 100644 (file)
index 0000000..e66d2c9
--- /dev/null
+++ b/src/com/owncloud/android/utils/UriUtils.java
@@ -0,0 +1,103 @@
+/* ownCloud Android client application
+ *   Copyright (C) 2012-2014 ownCloud Inc.
+ *
+ *   This program is free software: you can redistribute it and/or modify
+ *   it under the terms of the GNU General Public License version 2,
+ *   as published by the Free Software Foundation.
+ *
+ *   This program is distributed in the hope that it will be useful,
+ *   but WITHOUT ANY WARRANTY; without even the implied warranty of
+ *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ *   GNU General Public License for more details.
+ *
+ *   You should have received a copy of the GNU General Public License
+ *   along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ *
+ */
+
+package com.owncloud.android.utils;
+
+import android.content.Context;
+import android.database.Cursor;
+import android.net.Uri;
+
+
+/**
+ * A helper class for some Uri operations.
+ */
+public class UriUtils {
+    
+    public static final String URI_CONTENT_SCHEME = "content://";
+    
+    
+    /**
+     * Get the value of the data column for this Uri. This is useful for
+     * MediaStore Uris, and other file-based ContentProviders.
+     * 
+     * @param context The context.
+     * @param uri The Uri to query.
+     * @param selection (Optional) Filter used in the query.
+     * @param selectionArgs (Optional) Selection arguments used in the query.
+     * @return The value of the _data column, which is typically a file path.
+     */
+    public static String getDataColumn(Context context, Uri uri, String selection, String[] selectionArgs) {
+
+        Cursor cursor = null;
+        final String column = "_data";
+        final String[] projection = { column };
+
+        try {
+            cursor = context.getContentResolver().query(uri, projection, selection, selectionArgs, null);
+            if (cursor != null && cursor.moveToFirst()) {
+
+                final int column_index = cursor.getColumnIndexOrThrow(column);
+                return cursor.getString(column_index);
+            }
+        } finally {
+            if (cursor != null)
+                cursor.close();
+        }
+        return null;
+    }
+
+    /**
+     * @param uri The Uri to check.
+     * @return Whether the Uri authority is ExternalStorageProvider.
+     */
+    public static boolean isExternalStorageDocument(Uri uri) {
+        return "com.android.externalstorage.documents".equals(uri.getAuthority());
+    }
+
+    /**
+     * @param uri The Uri to check.
+     * @return Whether the Uri authority is DownloadsProvider.
+     */
+    public static boolean isDownloadsDocument(Uri uri) {
+        return "com.android.providers.downloads.documents".equals(uri.getAuthority());
+    }
+
+    /**
+     * @param uri The Uri to check.
+     * @return Whether the Uri authority is MediaProvider.
+     */
+    public static boolean isMediaDocument(Uri uri) {
+        return "com.android.providers.media.documents".equals(uri.getAuthority());
+    }
+
+    /**
+     * @param uri The Uri to check.
+     * @return Whether the Uri authority is Google Photos.
+     */
+    public static boolean isGooglePhotosUri(Uri uri) {
+        return "com.google.android.apps.photos.content".equals(uri.getAuthority());
+    }
+
+    /**
+     * 
+     * @param uri The Uri to check.
+     * @return Whether the Uri is from a content provider as kind "content://..."
+     */
+    public static boolean isContentDocument(Uri uri) {
+        return uri.toString().startsWith(URI_CONTENT_SCHEME);
+    }
+}