Minimize bundled user-agent CSS: html.css

third_party/WebKit/Source/build/scripts/in_generator.py

 # 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
@@ skipping 17 matching lines @@
 
 import os
 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
-
+class GenericWriter(object):
     def __init__(self, in_files):
-        if isinstance(in_files, basestring):
-            in_files = [in_files]
-        if in_files:
-            self.in_file = InFile.load_from_files(in_files, self.defaults, self.valid_values, self.default_parameters)
-        else:
-            self.in_file = None
         self._outputs = {}  # file_name -> generator
 
     def _write_file_if_changed(self, output_dir, contents, file_name):
         path = os.path.join(output_dir, file_name)
 
         # The build system should ensure our output directory exists, but just in case.
         directory = os.path.dirname(path)
         if not os.path.exists(directory):
             os.makedirs(directory)
 
         # Only write the file if the contents have changed. This allows ninja to
         # skip rebuilding targets which depend on the output.
         with open(path, "a+") as output_file:
             output_file.seek(0)
             if output_file.read() != contents:
                 output_file.truncate(0)
                 output_file.write(contents)
 
     def write_files(self, output_dir):
         for file_name, generator in self._outputs.items():
             self._write_file_if_changed(output_dir, generator(), file_name)
 
     def set_gperf_path(self, gperf_path):
         self.gperf_path = gperf_path
 
 
+class Writer(GenericWriter):
+    # Subclasses should override.
+    class_name = None
+    defaults = None
+    valid_values = None
+    default_parameters = None
+
+    def __init__(self, in_files):
+        super(Writer, self).__init__(in_files)
+
+        if isinstance(in_files, basestring):
+            in_files = [in_files]
+        if in_files:
+            self.in_file = InFile.load_from_files(in_files, self.defaults, self.valid_values, self.default_parameters)
+        else:
+            self.in_file = None
+
+
 class Maker(object):
     def __init__(self, writer_class):
         self._writer_class = writer_class
 
     def main(self, argv):
         script_name = os.path.basename(argv[0])
         args = argv[1:]
         if len(args) < 1:
             print "USAGE: %s INPUT_FILES" % script_name
             exit(1)
 
         parser = optparse.OptionParser()
 
         parser.add_option("--gperf", default="gperf")
         parser.add_option("--developer_dir",
                           help='Path to Xcode.')
         parser.add_option("--output_dir", default=os.getcwd())
         options, args = parser.parse_args()
 
         if options.developer_dir:
             os.environ['DEVELOPER_DIR'] = options.developer_dir
 
         writer = self._writer_class(args)
         writer.set_gperf_path(options.gperf)
         writer.write_files(options.output_dir)