[Mac/GN] Add //build/config/mac/package_framework.py.

build/config/mac/package_framework.py

+# Copyright 2016 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 os
+import sys
+
+# Packages a framework bundle by setting up symlinks for the "Current" version.
+# Usage: python /path/to/Foo.framework current_version
+
+def Main(args):
+  if len(args) != 3:
+    print >> sys.stderr, "Usage: %s /path/to/Something.framework A", (args[0],)
+    return 1
+
+  (framework, version) = args[1:]
+
+  # Find the name of the binary based on the part before the ".framework".
+  binary = os.path.splitext(os.path.basename(framework))[0]
+
+  CURRENT = 'Current'
+  RESOURCES = 'Resources'
+  VERSIONS = 'Versions'
+
+  if not os.path.exists(os.path.join(framework, VERSIONS, version, binary)):
+    # Binary-less frameworks don't seem to contain symlinks (see e.g.
+    # chromium's out/Debug/org.chromium.Chromium.manifest/ bundle).
+    return 0
+
+  # Move into the framework directory to set the symlinks correctly.
+  os.chdir(framework)
+
+  # Set up the Current version.
+  _Relink(version, os.path.join(VERSIONS, CURRENT))
+
+  # Set up the root symlinks.
+  _Relink(os.path.join(VERSIONS, CURRENT, binary), binary)
+  _Relink(os.path.join(VERSIONS, CURRENT, RESOURCES), RESOURCES)
+
+  # The following directories are optional but should also be symlinked
+  # in the root.
+  EXTRA_DIRS = [
+      'Helpers',
+      'Internet Plug-Ins',
+      'Libraries',
+      'XPCServices',
+  ]
+  for extra_dir in EXTRA_DIRS:
+    extra_dir_target = os.path.join(VERSIONS, version, extra_dir)
+    if os.path.exists(extra_dir_target):
+      _Relink(extra_dir_target, extra_dir)
+
+  return 0
+
+
+def _Relink(dest, link):
+  """Creates a symlink to |dest| named |link|. If |link| already exists,
+  it is overwritten."""
+  if os.path.lexists(link):
+    os.remove(link)
+  os.symlink(dest, link)
+
+
+if __name__ == '__main__':
+  sys.exit(Main(sys.argv))