1 files changed, 128 insertions, 0 deletions
diff --git a/webkit/support/setup_third_party.py b/webkit/support/setup_third_party.py
new file mode 100644
index 0000000..172ece7
--- /dev/null
+++ b/webkit/support/setup_third_party.py
@@ -0,0 +1,128 @@
+#!/usr/bin/python
+# Copyright (c) 2010 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.
+
+"A helper script for setting up forwarding headers."""
+
+import errno
+import os
+import sys
+
+
+def GetHeaderFilesInDir(dir_path):
+  """Return a list of all header files in dir_path."""
+  all_files = []
+  for root, dirs, files in os.walk(dir_path):
+    all_files.extend([os.path.join(root, f) for f in files if f.endswith('.h')])
+  return all_files
+
+
+def Inputs(args):
+  """List the files in the provided input dir.
+
+  args: A list with 1 value, the input dir.
+  Returns: 0 on success, other value on error."""
+  if len(args) != 1:
+    print "'inputs' expects only one input directory."
+    return -1
+
+  for filename in GetHeaderFilesInDir(args[0]):
+    print filename
+  return 0
+
+
+def Outputs(args):
+  """Takes an input dir and an output dir and figures out new output files
+  based on copying from the input dir to the output dir.
+
+  args: A list with 2 values, the input dir and the output dir.
+  Returns: 0 on success, other value on error."""
+  if len(args) != 2:
+    print "'outputs' expects an input directory and an output directory."
+    return -1
+
+  base_input_dir = args[0]
+  output_dir = args[1]
+  input_files = GetHeaderFilesInDir(base_input_dir)
+  for filename in input_files:
+    rel_path = filename[len(base_input_dir) + 1:]
+    print os.path.join(output_dir, rel_path)
+
+
+def SetupHeaders(args):
+  """Takes an input dir and an output dir and sets up forwarding headers
+  from output dir to files in input dir.
+  args: A list with 2 values, the input dir and the output dir.
+  Returns: 0 on success, other value on error."""
+  if len(args) != 2:
+    print "'setup_headers' expects an input directory and an output directory."
+    return -1
+
+  base_input_dir = args[0]
+  output_dir = args[1]
+  input_files = GetHeaderFilesInDir(base_input_dir)
+  for input_filename in input_files:
+    rel_path = input_filename[len(base_input_dir) + 1:]
+    out_filename = os.path.join(output_dir, rel_path)
+    TryToMakeDir(os.path.split(out_filename)[0])
+    WriteSetupFilename(input_filename, out_filename)
+
+
+def TryToMakeDir(dir_name):
+  """Create the directory dir_name if it doesn't exist."""
+  try:
+    os.makedirs(dir_name)
+  except OSError, e:
+    if e.errno != errno.EEXIST:
+      raise e
+
+
+def NormalizePath(path):
+  """Normalize path for use with os.path.commonprefix.
+  On windows, this makes sure that the drive letters are always in the
+  same case."""
+  abs_path = os.path.abspath(path)
+  drive, rest = os.path.splitdrive(abs_path)
+  return os.path.join(drive.lower(), rest)
+
+
+def WriteSetupFilename(input_filename, out_filename):
+  """Create a forwarding header from out_filename to input_filename."""
+  # Figure out the relative path from out_filename to input_filename.
+  # We can't use os.path.relpath since that's a python2.6 feature and we
+  # support python 2.5.
+  input_filename = NormalizePath(input_filename)
+  out_filename = NormalizePath(out_filename)
+  ancestor = os.path.commonprefix([input_filename, out_filename])
+
+  assert os.path.isdir(ancestor)
+  num_parent_dirs = 0
+  out_dir = os.path.split(out_filename)[0]
+  while os.path.normpath(ancestor) != os.path.normpath(out_dir):
+    num_parent_dirs += 1
+    out_dir = os.path.split(out_dir)[0]
+
+  rel_path = os.path.join('/'.join(['..'] * num_parent_dirs),
+                          input_filename[len(ancestor):])
+
+  out_file = open(out_filename, 'w')
+  out_file.write("""// This file is generated.  Do not edit.
+#include "%s"
+""" % rel_path)
+  out_file.close()
+
+
+def Main(argv):
+  commands = {
+    'inputs': Inputs,
+    'outputs': Outputs,
+    'setup_headers': SetupHeaders,
+  }
+  command = argv[1]
+  args = argv[2:]
+  return commands[command](args)
+
+
+if __name__ == '__main__':
+  sys.exit(Main(sys.argv))