1 # Copyright (C) 2013 Google Inc. All rights reserved. 2 # 3 # Redistribution and use in source and binary forms, with or without 4 # modification, are permitted provided that the following conditions are 5 # met: 6 # 7 # * Redistributions of source code must retain the above copyright 8 # notice, this list of conditions and the following disclaimer. 9 # * Redistributions in binary form must reproduce the above 10 # copyright notice, this list of conditions and the following disclaimer 11 # in the documentation and/or other materials provided with the 12 # distribution. 13 # * Neither the name of Google Inc. nor the names of its 14 # contributors may be used to endorse or promote products derived from 15 # this software without specific prior written permission. 16 # 17 # THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 18 # "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 19 # LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR 20 # A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT 21 # OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 22 # SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT 23 # LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 24 # DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 25 # THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 26 # (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE 27 # OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 28 29 import os.path 30 import shlex 31 import shutil 32 import optparse 33 34 from in_file import InFile 35 36 37 class Writer(object): 38 # Subclasses should override. 39 class_name = None 40 defaults = None 41 valid_values = None 42 default_parameters = None 43 44 def __init__(self, in_files): 45 if isinstance(in_files, basestring): 46 in_files = [in_files] 47 if in_files: 48 self.in_file = InFile.load_from_files(in_files, self.defaults, self.valid_values, self.default_parameters) 49 else: 50 self.in_file = None 51 self._outputs = {} # file_name -> generator 52 53 def wrap_with_condition(self, string, condition): 54 if not condition: 55 return string 56 return "#if ENABLE(%(condition)s)\n%(string)s\n#endif" % { 'condition' : condition, 'string' : string } 57 58 def _forcibly_create_text_file_at_path_with_contents(self, file_path, contents): 59 # FIXME: This method can be made less force-full anytime after 6/1/2013. 60 # A gyp error was briefly checked into the tree, causing 61 # a directory to have been generated in place of one of 62 # our output files. Clean up after that error so that 63 # all users don't need to clobber their output directories. 64 shutil.rmtree(file_path, ignore_errors=True) 65 # The build system should ensure our output directory exists, but just in case. 66 directory = os.path.dirname(file_path) 67 if not os.path.exists(directory): 68 os.makedirs(directory) 69 70 with open(file_path, "w") as file_to_write: 71 file_to_write.write(contents) 72 73 def _write_file(self, output_dir, contents, file_name): 74 path = os.path.join(output_dir, file_name) 75 self._forcibly_create_text_file_at_path_with_contents(path, contents) 76 77 def write_files(self, output_dir): 78 for file_name, generator in self._outputs.items(): 79 self._write_file(output_dir, generator(), file_name) 80 81 def set_gperf_path(self, gperf_path): 82 self.gperf_path = gperf_path 83 84 85 class Maker(object): 86 def __init__(self, writer_class): 87 self._writer_class = writer_class 88 89 def main(self, argv): 90 script_name = os.path.basename(argv[0]) 91 args = argv[1:] 92 if len(args) < 1: 93 print "USAGE: %s INPUT_FILES" % script_name 94 exit(1) 95 96 parser = optparse.OptionParser() 97 parser.add_option("--gperf", default="gperf") 98 parser.add_option("--output_dir", default=os.getcwd()) 99 options, args = parser.parse_args() 100 101 writer = self._writer_class(args) 102 writer.set_gperf_path(options.gperf) 103 writer.write_files(options.output_dir) 104