| # Copyright (C) 2013 Google Inc. All rights reserved. |
| # |
| # Redistribution and use in source and binary forms, with or without |
| # modification, are permitted provided that the following conditions are |
| # met: |
| # |
| # * Redistributions of source code must retain the above copyright |
| # notice, this list of conditions and the following disclaimer. |
| # * Redistributions in binary form must reproduce the above |
| # copyright notice, this list of conditions and the following disclaimer |
| # in the documentation and/or other materials provided with the |
| # distribution. |
| # * Neither the name of Google Inc. nor the names of its |
| # contributors may be used to endorse or promote products derived from |
| # this software without specific prior written permission. |
| # |
| # THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS |
| # "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT |
| # LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR |
| # A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT |
| # OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, |
| # SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT |
| # LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |
| # DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
| # THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
| # (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE |
| # OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
| |
| import os.path |
| import shlex |
| import shutil |
| import optparse |
| |
| from in_file import InFile |
| |
| |
| class Writer(object): |
| # Subclasses should override. |
| class_name = None |
| defaults = None |
| valid_values = None |
| default_parameters = None |
| |
| def __init__(self, in_files, enabled_conditions): |
| if isinstance(in_files, basestring): |
| in_files = [in_files] |
| self.in_file = InFile.load_from_files(in_files, self.defaults, self.valid_values, self.default_parameters) |
| self._enabled_conditions = enabled_conditions |
| self._outputs = {} # file_name -> generator |
| |
| def wrap_with_condition(self, string, condition): |
| if not condition: |
| return string |
| return "#if ENABLE(%(condition)s)\n%(string)s\n#endif" % { 'condition' : condition, 'string' : string } |
| |
| def _forcibly_create_text_file_at_path_with_contents(self, file_path, contents): |
| # FIXME: This method can be made less force-full anytime after 6/1/2013. |
| # A gyp error was briefly checked into the tree, causing |
| # a directory to have been generated in place of one of |
| # our output files. Clean up after that error so that |
| # all users don't need to clobber their output directories. |
| shutil.rmtree(file_path, ignore_errors=True) |
| # The build system should ensure our output directory exists, but just in case. |
| directory = os.path.dirname(file_path) |
| if not os.path.exists(directory): |
| os.makedirs(directory) |
| |
| with open(file_path, "w") as file_to_write: |
| file_to_write.write(contents) |
| |
| def _write_file(self, output_dir, contents, file_name): |
| path = os.path.join(output_dir, file_name) |
| self._forcibly_create_text_file_at_path_with_contents(path, contents) |
| |
| def write_files(self, output_dir): |
| for file_name, generator in self._outputs.items(): |
| self._write_file(output_dir, generator(), file_name) |
| |
| |
| class Maker(object): |
| def __init__(self, writer_class): |
| self._writer_class = writer_class |
| |
| def _enabled_conditions_from_defines(self, defines_arg_string): |
| if not defines_arg_string: |
| return [] |
| |
| defines_strings = shlex.split(defines_arg_string) |
| |
| # We only care about feature defines. |
| enable_prefix = 'ENABLE_' |
| |
| enabled_conditions = [] |
| for define_string in defines_strings: |
| split_define = define_string.split('=') |
| if split_define[1] != '1': |
| continue |
| define = split_define[0] |
| if not define.startswith(enable_prefix): |
| continue |
| enabled_conditions.append(define[len(enable_prefix):]) |
| return enabled_conditions |
| |
| def main(self, argv): |
| script_name = os.path.basename(argv[0]) |
| args = argv[1:] |
| if len(args) < 1: |
| print "USAGE: %i INPUT_FILES" % script_name |
| exit(1) |
| |
| parser = optparse.OptionParser() |
| parser.add_option("--defines") |
| parser.add_option("--output_dir", default=os.getcwd()) |
| (options, args) = parser.parse_args() |
| |
| enabled_conditions = self._enabled_conditions_from_defines(options.defines) |
| |
| writer = self._writer_class(args, enabled_conditions) |
| writer.write_files(options.output_dir) |