[MD History] Vulcanize as part of GN build.

chrome/browser/resources/vulcanize_gn.py

 #!/usr/bin/env python
 # Copyright 2016 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.
 
 import argparse
 import itertools
 import os
 import platform
 import re
-import subprocess
 import sys
 import tempfile
 
 
 _HERE_PATH = os.path.dirname(__file__)
 _SRC_PATH = os.path.normpath(os.path.join(_HERE_PATH, '..', '..', '..'))
 _CWD = os.getcwd()
 
 sys.path.append(os.path.join(_SRC_PATH, 'third_party', 'node'))
 import node
@@ skipping 44 matching lines @@
     ('chrome://resources/html/', _HTML_RESOURCES_PATH),
     ('chrome://resources/js/', _JS_RESOURCES_PATH),
     ('chrome://resources/polymer/v1_0/', _POLYMER_PATH)
 ]
 
 
 _VULCANIZE_REDIRECT_ARGS = list(itertools.chain.from_iterable(map(
     lambda m: ['--redirect', '"%s|%s"' % (m[0], m[1])], _URL_MAPPINGS)))
 
 
-_REQUEST_LIST_FILE = 'request_list.txt'
-
-
 _PAK_UNPACK_FOLDER = 'flattened'
 
-
-def _run_node(cmd_parts, stdout=None):
-  cmd = " ".join([node.GetBinaryPath()] + cmd_parts)
-  process = subprocess.Popen(
-      cmd, stdout=subprocess.PIPE, stderr=subprocess.PIPE, shell=True)
-  stdout, stderr = process.communicate()
-
-  if stderr:
-    print >> sys.stderr, '%s failed: %s' % (cmd, stderr)
-    raise
-
-  return stdout
-
+def _request_list_path(out_path, html_out_file):
+  return os.path.join(out_path, html_out_file + '.requestlist')
 
 def _undo_mapping(mappings, url):
   for (redirect_url, file_path) in mappings:
     if url.startswith(redirect_url):
       return url.replace(redirect_url, file_path + os.sep)
   return url
 
 
 # Get a list of all files that were bundled with Vulcanize and update the
 # depfile accordingly such that Ninja knows when to trigger re-vulcanization.
 def _update_dep_file(in_folder, args):
   in_path = os.path.join(_CWD, in_folder)
   out_path = os.path.join(_CWD, args.out_folder)
 
   # Prior call to vulcanize already generated the deps list, grab it from there.
-  request_list = open(os.path.join(
-      out_path, _REQUEST_LIST_FILE), 'r').read().splitlines()
+  request_list = open(_request_list_path(out_path, args.html_out_file),
+                      'r').read().splitlines()
 
   # Undo the URL mappings applied by vulcanize to get file paths relative to
   # current working directory.
   url_mappings = _URL_MAPPINGS + [
       ('/', os.path.relpath(in_path, _CWD)),
       ('chrome://%s/' % args.host, os.path.relpath(in_path, _CWD)),
   ]
 
   dependencies = map(
       lambda url: _undo_mapping(url_mappings, url), request_list)
 
   # If the input was a .pak file, the generated depfile should not list files
   # already in the .pak file.
   filtered_dependencies = dependencies
   if (args.input_type == 'PAK_FILE'):
     filter_url = os.path.join(args.out_folder, _PAK_UNPACK_FOLDER)
     filtered_dependencies = filter(
         lambda url: not url.startswith(filter_url), dependencies)
 
   with open(os.path.join(_CWD, args.depfile), 'w') as f:
     f.write(os.path.join(
         args.out_folder, args.html_out_file) + ': ' + ' '.join(
             filtered_dependencies))
 
 
 def _vulcanize(in_folder, out_folder, host, html_in_file,
-               html_out_file, js_out_file):
+               html_out_file, js_out_file, exclude):
   in_path = os.path.normpath(os.path.join(_CWD, in_folder))
   out_path = os.path.join(_CWD, out_folder)
 
   html_out_path = os.path.join(out_path, html_out_file)
   js_out_path = os.path.join(out_path, js_out_file)
 
-  output = _run_node(
+  exclude = exclude or []
+
+  exclude_args = []
+  for f in exclude:
+    exclude_args.append('--exclude')
+    exclude_args.append(f)
+
+  output = node.RunNode(
       [node_modules.PathToVulcanize()] +
-      _VULCANIZE_BASE_ARGS + _VULCANIZE_REDIRECT_ARGS +
-      ['--out-request-list', os.path.join(out_path, _REQUEST_LIST_FILE),
+      _VULCANIZE_BASE_ARGS + _VULCANIZE_REDIRECT_ARGS + exclude_args +
+      ['--out-request-list', _request_list_path(out_path, html_out_file),
        '--redirect', '"/|%s"' % in_path,
        '--redirect', '"chrome://%s/|%s"' % (host, in_path),
        # TODO(dpapad): Figure out why vulcanize treats the input path
        # differently on Windows VS Linux/Mac.
        os.path.join(
            in_path if platform.system() == 'Windows' else os.sep,
            html_in_file)])
 
   with tempfile.NamedTemporaryFile(mode='wt+', delete=False) as tmp:
     # Grit includes are not supported, use HTML imports instead.
     tmp.write(output.replace(
         '<include src="', '<include src-disabled="'))
 
   try:
-    _run_node([node_modules.PathToCrisper(),
+    node.RunNode([node_modules.PathToCrisper(),
              '--source', tmp.name,
              '--script-in-head', 'false',
              '--html', html_out_path,
              '--js', js_out_path])
 
     # TODO(tsergeant): Remove when JS resources are minified by default:
     # crbug.com/619091.
-    _run_node([node_modules.PathToUglifyJs(), js_out_path,
+    node.RunNode([node_modules.PathToUglifyJs(), js_out_path,
               '--comments', '"/Copyright|license|LICENSE|\<\/?if/"',
               '--output', js_out_path])
   finally:
     os.remove(tmp.name)
 
 
-def _css_build(out_folder, files):
-  out_path = os.path.join(_CWD, out_folder)
-  paths = map(lambda f: os.path.join(out_path, f), files)
-
-  _run_node([node_modules.PathToPolymerCssBuild()] + paths)
-
-
 def main():
   parser = argparse.ArgumentParser()
   parser.add_argument('--depfile')
+  parser.add_argument('--exclude', action='append')
   parser.add_argument('--host')
   parser.add_argument('--html_in_file')
   parser.add_argument('--html_out_file')
   parser.add_argument('--input')
   parser.add_argument('--input_type')
   parser.add_argument('--js_out_file')
   parser.add_argument('--out_folder')
   args = parser.parse_args()
   args.input = os.path.normpath(args.input)
 
   vulcanize_input_folder = args.input
 
   # If a .pak file was specified, unpack that file first and pass the output to
   # vulcanize.
   if (args.input_type == 'PAK_FILE'):
     import unpack_pak
-    input_folder = os.path.join(_CWD, args.input)
     output_folder = os.path.join(args.out_folder, _PAK_UNPACK_FOLDER)
     unpack_pak.unpack(args.input, output_folder)
     vulcanize_input_folder = output_folder
 
   _vulcanize(vulcanize_input_folder, args.out_folder, args.host,
-             args.html_in_file, args.html_out_file, args.js_out_file)
-  _css_build(args.out_folder, files=[args.html_out_file])
+             args.html_in_file, args.html_out_file, args.js_out_file,
+             args.exclude)
 
   _update_dep_file(vulcanize_input_folder, args)
 
 
 if __name__ == '__main__':
   main()