It is time.

ui/ozone/generate_ozone_platform_list.py

-#!/usr/bin/env python
-# Copyright 2013 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.
-
-"""Code generator for Ozone platform list.
-
-This script takes as arguments a list of platform names and generates a C++
-source file containing a list of those platforms.
-
-Each platform gets an integer identifier that is used to find objects for that
-platform (particularly constructors for platform-specific objects).
-
-Example Output: ./generate_ozone_platform_list.py --default wayland dri wayland
-
-  // platform_list.txt
-
-  wayland
-  dri
-
-  // platform_list.h
-
-  #ifndef UI_OZONE_PLATFORM_LIST_H_
-  #define UI_OZONE_PLATFORM_LIST_H_
-
-  namespace ui {
-
-  const int kPlatformWayland = 0;
-  const int kPlatformDri = 1;
-
-  extern const char *kPlatformNames[kPlatformCount];
-
-  }  // namespace ui
-
-  // platform_list.cc
-
-  #include "ui/ozone/platform_list.h"
-
-  namespace ui {
-
-  const char *kPlatformNames[] = {
-   "wayland", // kPlatformWayland
-   "dri", // kPlatformDri
-  };
-
-  }  // namespace ui
-
-  #endif  // UI_OZONE_PLATFORM_LIST_H_
-
-"""
-
-import optparse
-import os
-import collections
-import re
-import sys
-import string
-
-
-def GetConstantName(name):
-  """Determine name of static constructor function from platform name.
-
-  We just capitalize the platform name and prepend "CreateOzonePlatform".
-  """
-
-  return 'kPlatform' + string.capitalize(name)
-
-
-def GeneratePlatformListText(out, platforms):
-  """Generate text file with list of platform names, in platform id order."""
-
-  for platform in platforms:
-    out.write(platform)
-    out.write('\n')
-
-  out.write('\n')
-
-
-def GeneratePlatformListHeader(out, platforms):
-  """Generate ids of ozone platforms & declaration of static names array."""
-
-  out.write('// DO NOT MODIFY. GENERATED BY generate_ozone_platform_list.py\n')
-  out.write('\n')
-
-  out.write('#ifndef UI_OZONE_PLATFORM_LIST_H_\n')
-  out.write('#define UI_OZONE_PLATFORM_LIST_H_\n')
-  out.write('\n')
-
-  out.write('namespace ui {\n')
-  out.write('\n')
-
-  # Prototypes for platform initializers.
-  for plat_id, plat_name in enumerate(platforms):
-    out.write('const int %s = %d;\n' % (GetConstantName(plat_name), plat_id))
-  out.write('\n')
-
-  # Platform count.
-  out.write('const int kPlatformCount = %d;\n' % len(platforms))
-  out.write('\n')
-
-  # Declaration for names list.
-  out.write('extern const char* kPlatformNames[kPlatformCount];\n')
-  out.write('\n')
-
-  out.write('}  // namespace ui\n')
-  out.write('\n')
-
-  out.write('#endif  // UI_OZONE_PLATFORM_LIST_H_\n')
-  out.write('\n')
-
-
-def GeneratePlatformListSource(out, platforms):
-  """Generate static array containing a list of ozone platforms."""
-
-  out.write('// DO NOT MODIFY. GENERATED BY generate_ozone_platform_list.py\n')
-  out.write('\n')
-
-  out.write('#include "ui/ozone/platform_list.h"\n')
-  out.write('\n')
-
-  out.write('namespace ui {\n')
-  out.write('\n')
-
-  # Definition of names list.
-  out.write('const char* kPlatformNames[] = {\n')
-
-  # Prototypes for platform initializers.
-  for plat_name in platforms:
-    out.write('    "%s",  // %s\n' % (plat_name, GetConstantName(plat_name)))
-  out.write('};\n')
-  out.write('\n')
-
-  out.write('}  // namespace ui\n')
-  out.write('\n')
-
-
-def main(argv):
-  parser = optparse.OptionParser()
-  parser.add_option('--output_cc')
-  parser.add_option('--output_h')
-  parser.add_option('--output_txt')
-  parser.add_option('--default')
-  options, platforms = parser.parse_args(argv)
-
-  # Reorder the platforms when --default is specified.
-  # The default platform must appear first in the platform list.
-  if options.default and options.default in platforms:
-    platforms.remove(options.default)
-    platforms.insert(0, options.default)
-
-  # Write to standard output or file specified by --output_{cc,h}.
-  out_cc = sys.stdout
-  out_h = sys.stdout
-  out_txt = sys.stdout
-  if options.output_cc:
-    out_cc = open(options.output_cc, 'wb')
-  if options.output_h:
-    out_h = open(options.output_h, 'wb')
-  if options.output_txt:
-    out_txt = open(options.output_txt, 'wb')
-
-  GeneratePlatformListText(out_txt, platforms)
-  GeneratePlatformListHeader(out_h, platforms)
-  GeneratePlatformListSource(out_cc, platforms)
-
-  if options.output_cc:
-    out_cc.close()
-  if options.output_h:
-    out_h.close()
-  if options.output_txt:
-    out_txt.close()
-
-  return 0
-
-
-if __name__ == '__main__':
-  sys.exit(main(sys.argv[1:]))