Enforce RROs for all the build-time ROs

This CL is to generate every static RRO package for its target package
automatically at build-time.

BOARD_ENFORCE_RRO build variable is added to specify whether enforcing
RRO is required or not.

BOARD_ENFORCE_RRO_EXEMPT_SOURCES build variable is added to specify
the module list of which item should be exempt from enforcing RRO.

Test: tested on bullhead and sailfish
Bug: 34097942
Change-Id: I455b2ce34e66c57a540c299b5e378b7c4e78d5b8
diff --git a/tools/generate-enforce-rro-android-manifest.py b/tools/generate-enforce-rro-android-manifest.py
new file mode 100755
index 0000000..68331cf
--- /dev/null
+++ b/tools/generate-enforce-rro-android-manifest.py
@@ -0,0 +1,65 @@
+#!/usr/bin/env python
+#
+# Copyright (C) 2017 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.
+"""
+Utility to generate the Android manifest file of runtime resource overlay
+package for source module.
+"""
+from xml.dom.minidom import parseString
+import argparse
+import os
+import sys
+
+ANDROID_MANIFEST_TEMPLATE="""<manifest xmlns:android="http://schemas.android.com/apk/res/android"
+    package="%s.auto_generated_rro__"
+    android:versionCode="1"
+    android:versionName="1.0">
+    <overlay android:targetPackage="%s" android:priority="0" android:isStatic="true"/>
+</manifest>
+"""
+
+
+def get_args():
+    parser = argparse.ArgumentParser()
+    parser.add_argument(
+        '-u', '--use-package-name', action='store_true',
+        help='Indicate that --package-info is a package name.')
+    parser.add_argument(
+        '-p', '--package-info', required=True,
+        help='Manifest package name or manifest file path of source module.')
+    parser.add_argument(
+        '-o', '--output', required=True,
+        help='Output manifest file path.')
+    return parser.parse_args()
+
+
+def main(argv):
+  args = get_args()
+
+  package_name = args.package_info
+  if not args.use_package_name:
+    with open(args.package_info) as f:
+      data = f.read()
+      f.close()
+      dom = parseString(data)
+      package_name = dom.documentElement.getAttribute('package')
+
+  with open(args.output, 'w+') as f:
+    f.write(ANDROID_MANIFEST_TEMPLATE % (package_name, package_name))
+    f.close()
+
+
+if __name__ == "__main__":
+  main(sys.argv)