1 files changed, 34 insertions, 0 deletions
diff --git a/third_party/libwebrtc/build/android/gyp/ijar.py b/third_party/libwebrtc/build/android/gyp/ijar.py
new file mode 100755
index 0000000000..45413f62fd
--- /dev/null
+++ b/third_party/libwebrtc/build/android/gyp/ijar.py
@@ -0,0 +1,34 @@
+#!/usr/bin/env python3
+#
+# Copyright 2018 The Chromium Authors. 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 subprocess
+import sys
+
+from util import build_utils
+
+
+# python -c "import zipfile; zipfile.ZipFile('test.jar', 'w')"
+# du -b test.jar
+_EMPTY_JAR_SIZE = 22
+
+
+def main():
+  # The point of this wrapper is to use AtomicOutput so that output timestamps
+  # are not updated when outputs are unchanged.
+  ijar_bin, in_jar, out_jar = sys.argv[1:]
+  with build_utils.AtomicOutput(out_jar) as f:
+    # ijar fails on empty jars: https://github.com/bazelbuild/bazel/issues/10162
+    if os.path.getsize(in_jar) <= _EMPTY_JAR_SIZE:
+      with open(in_jar, 'rb') as in_f:
+        f.write(in_f.read())
+    else:
+      build_utils.CheckOutput([ijar_bin, in_jar, f.name])
+
+
+if __name__ == '__main__':
+  main()