1 files changed, 75 insertions, 0 deletions
diff --git a/third_party/libwebrtc/build/config/ios/generate_umbrella_header.py b/third_party/libwebrtc/build/config/ios/generate_umbrella_header.py
new file mode 100644
index 0000000000..8547e18aa7
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+++ b/third_party/libwebrtc/build/config/ios/generate_umbrella_header.py
@@ -0,0 +1,75 @@
+# 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.
+
+"""Generates an umbrella header for an iOS framework."""
+
+import argparse
+import datetime
+import os
+import re
+import string
+
+
+HEADER_TEMPLATE = string.Template('''\
+// Copyright $year 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.
+//
+// This file is auto-generated by //build/ios/config/generate_umbrella_header.py
+
+#ifndef $header_guard
+#define $header_guard
+
+$imports
+
+#endif  // $header_guard
+''')
+
+
+def ComputeHeaderGuard(file_path):
+  """Computes the header guard for a file path.
+
+  Args:
+    file_path: The path to convert into an header guard.
+  Returns:
+    The header guard string for the file_path.
+  """
+  return re.sub(r'[.+/\\]', r'_', file_path.upper()) + '_'
+
+
+def WriteUmbrellaHeader(output_path, imported_headers):
+  """Writes the umbrella header.
+
+  Args:
+    output_path: The path to the umbrella header.
+    imported_headers: A list of headers to #import in the umbrella header.
+  """
+  year = datetime.date.today().year
+  header_guard = ComputeHeaderGuard(output_path)
+  imports = '\n'.join([
+      '#import "%s"' % os.path.basename(header)
+          for header in sorted(imported_headers)
+      ])
+  with open(output_path, 'w') as output_file:
+    output_file.write(
+        HEADER_TEMPLATE.safe_substitute({
+            'year': year,
+            'header_guard': header_guard,
+            'imports': imports,
+        }))
+
+
+def Main():
+  parser = argparse.ArgumentParser(description=__doc__)
+  parser.add_argument('--output-path', required=True, type=str,
+                      help='Path to the generated umbrella header.')
+  parser.add_argument('imported_headers', type=str, nargs='+',
+                      help='Headers to #import in the umbrella header.')
+  options = parser.parse_args()
+
+  return WriteUmbrellaHeader(options.output_path, options.imported_headers)
+
+
+if __name__ == '__main__':
+  Main()