Add tool for copying keep annotations Kotlin files to androidx
Bug: b/392865072
Change-Id: Id75ccb8559516884e932b80a3438c408330bf0be
diff --git a/tools/update-androidx-keep-annotations.py b/tools/update-androidx-keep-annotations.py
new file mode 100755
index 0000000..91fffa0
--- /dev/null
+++ b/tools/update-androidx-keep-annotations.py
@@ -0,0 +1,72 @@
+#!/usr/bin/env python3
+# Copyright (c) 2025, the R8 project authors. Please see the AUTHORS file
+# for details. All rights reserved. Use of this source code is governed by a
+# BSD-style license that can be found in the LICENSE file.
+
+import argparse
+import os
+import shutil
+import sys
+import utils
+
+
+KOTLIN_EXTENSION = '.kt'
+# Extension used by androidx KMP libraries for Kotlin files with code
+# targeting the JVM.
+JVM_KOTLIN_EXTENSION = '.jvm.kt'
+
+
+def parse_options():
+ parser = argparse.ArgumentParser(description='Update androidx keep annotations')
+ parser.add_argument('--androidx',
+ metavar=('<path>'),
+ required=True,
+ help='Path to the androidx checkout')
+ return parser.parse_args()
+
+
+def main():
+ args = parse_options()
+
+ source_dir = os.path.join(
+ utils.REPO_ROOT,
+ 'src',
+ 'keepanno',
+ 'java',
+ 'androidx',
+ 'annotation',
+ 'keep')
+ dest_dir = os.path.join(
+ args.androidx,
+ 'frameworks',
+ 'support',
+ 'annotation',
+ 'annotation-keep',
+ 'src',
+ 'jvmMain',
+ 'kotlin',
+ 'androidx',
+ 'annotation',
+ 'keep')
+
+ for root, dirnames, filenames in os.walk(source_dir):
+ if root != source_dir:
+ print('Unexpected subdirectory under {source_dir}.'
+ .format(source_dir=source_dir))
+ if len(dirnames) > 0:
+ print('Unexpected subdirectories under {dirnames}.'
+ .format(dirnames=dirnames))
+ for filename in filenames:
+ if not filename.endswith(KOTLIN_EXTENSION):
+ print('Unexpected non Kotlin file {filename}.'
+ .format(filename=os.path.join(root, filename)))
+ sys.exit(1)
+ new_filename = filename[0:len(filename) - len(KOTLIN_EXTENSION)] + JVM_KOTLIN_EXTENSION
+
+ shutil.copyfile(
+ os.path.join(root, filename),
+ os.path.join(dest_dir, new_filename))
+
+
+if __name__ == '__main__':
+ sys.exit(main())
