text: #!/usr/bin/env python
  # 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.
  #
  # Used for generating LayoutTest-compatible html files to run html5lib *.dat files.
  
  import os
  import glob
  
  
  class WrapperGenerator(object):
      INPUT_DIRECTORY = "resources"
      INPUT_SUFFIX = ".dat"
      OUTPUT_DIRECTORY = "generated"
      HARNESS_PREFIX = "run-"
      HARNESS_SUFFIX = ".html"
      EXPECTAION_SUFFIX = "-expected.txt"
      HARNESS_TYPES = ("write", "data")
  
      HARNESS_TEMPLATE = """<!DOCTYPE html>
  <script>
  var test_files = [ '%(test_path)s' ]
  </script>
  <script src="../../resources/dump-as-markup.js"></script>
  %(extra_content)s
  <script src="../resources/runner.js"></script>
  """
  
      def _files_in_directory_with_suffix(self, directory, suffix):
          return glob.glob(os.path.join(directory, '*' + suffix))
  
      def _last_path_component_removing_suffix(self, path, suffix):
          return os.path.split(path)[-1][:-len(suffix)]
  
      def _remove_harness_prefix(self, name):
          assert(name.startswith(self.HARNESS_PREFIX))
          return name[len(self.HARNESS_PREFIX):]
  
      def _remove_harness_type(self, name):
          parts = name.split('-')
          assert(parts[-1] in self.HARNESS_TYPES)
          return "-".join(parts[:-1])
  
      def _test_name_from_harness_name(self, name):
          name = self._remove_harness_prefix(name)
          return self._remove_harness_type(name)
  
      def _remove_stale_tests(self, test_names):
          for path in self._files_in_directory_with_suffix(self.OUTPUT_DIRECTORY, self.HARNESS_SUFFIX):
              name = self._last_path_component_removing_suffix(path, self.HARNESS_SUFFIX)
              name = self._test_name_from_harness_name(name)
              if name not in test_names:
                  print "Removing %s, %s no longer exists." % (path, self._input_path(name))
                  os.remove(path)
  
          for path in self._files_in_directory_with_suffix(self.OUTPUT_DIRECTORY, self.EXPECTAION_SUFFIX):
              name = self._last_path_component_removing_suffix(path, self.EXPECTAION_SUFFIX)
              name = self._test_name_from_harness_name(name)
              if name not in test_names:
                  print "Removing %s, %s no longer exists." % (path, self._input_path(name))
                  os.remove(path)
  
      def _input_path(self, test_name):
          return os.path.join(self.INPUT_DIRECTORY, test_name + self.INPUT_SUFFIX)
  
      def _harness_path(self, test_name, use_write):
          harness_path = os.path.join(self.OUTPUT_DIRECTORY, self.HARNESS_PREFIX + test_name)
          if use_write:
              harness_path += "-write"
          else:
              harness_path += "-data"
          return harness_path + self.HARNESS_SUFFIX
  
      def _harness_content(self, test_name, use_write):
          extra_content = ""
          if not use_write:
              extra_content = "<script>window.forceDataURLs = true;</script>";
          return self.HARNESS_TEMPLATE % {
              # FIXME: .. should be relative to the number of components in OUTPUT_DIRECTORY
              'test_path': os.path.join('..', self._input_path(test_name)),
              'extra_content': extra_content,
          }
  
      def _write_harness(self, test_name, use_write):
          harness_file = open(self._harness_path(test_name, use_write), "w")
          harness_file.write(self._harness_content(test_name, use_write))
  
      def main(self):
          test_names = [self._last_path_component_removing_suffix(path, self.INPUT_SUFFIX) for path in self._files_in_directory_with_suffix(self.INPUT_DIRECTORY, self.INPUT_SUFFIX)]
  
          self._remove_stale_tests(test_names)
  
          for name in test_names:
              self._write_harness(name, True)
              self._write_harness(name, False)
  
  
  if __name__ == "__main__":
      WrapperGenerator().main()
  