Expose Android resources in Skylark API.

Also expose functionality to calculate resource source directory from
Android resource artifact.

--
MOS_MIGRATED_REVID=115492705

1 files changed, 41 insertions, 0 deletions

diff --git a/src/main/java/com/google/devtools/build/lib/rules/android/AndroidSkylarkCommon.java b/src/main/java/com/google/devtools/build/lib/rules/android/AndroidSkylarkCommon.java
new file mode 100644
index 0000000000..1724cfa4f8
--- /dev/null
+++ b/src/main/java/com/google/devtools/build/lib/rules/android/AndroidSkylarkCommon.java
@@ -0,0 +1,41 @@
+// Copyright 2016 The Bazel Authors. All rights reserved.
+//
+// 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.google.devtools.build.lib.rules.android;
+
+import com.google.devtools.build.lib.actions.Artifact;
+import com.google.devtools.build.lib.skylarkinterface.SkylarkCallable;
+import com.google.devtools.build.lib.skylarkinterface.SkylarkModule;
+import com.google.devtools.build.lib.vfs.PathFragment;
+
+/**
+ * Common utilities for Skylark rules related to Android.
+ */
+@SkylarkModule(
+  name = "android_common",
+  doc = "Common utilities and fucntionality related to Android rules."
+)
+public class AndroidSkylarkCommon {
+  @SkylarkCallable(
+    name = "resource_source_directory",
+    allowReturnNones = true,
+    doc =
+        "Returns a source directory for Android resource file. "
+            + "The source directory is a prefix of resource's relative path up to "
+            + "a directory that designates resource kind (cf. "
+            + "http://developer.android.com/guide/topics/resources/providing-resources.html)."
+  )
+  public static PathFragment getSourceDirectoryRelativePathFromResource(Artifact resource) {
+    return AndroidCommon.getSourceDirectoryRelativePathFromResource(resource);
+  }
+}