trace-viewer/build/generate_standalone_timeline_view.py

#!/usr/bin/env python
# Copyright (c) 2012 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 optparse
import parse_deps
import sys
import os

srcdir = os.path.abspath(os.path.join(os.path.dirname(__file__), "../src"))

js_warning_message = """/**
// Copyright (c) 2012 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.

* WARNING: This file is generated by generate_standalone_timeline_view.py
*
*        Do not edit directly.
*/
"""

css_warning_message = """/**
/* Copyright (c) 2012 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. */

* WARNING: This file is generated by generate_standalone_timeline_view.py
*
*        Do not edit directly.
*/
"""

py_warning_message = """#!/usr/bin/env python
#
# Copyright (c) 2012 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. */
#
# WARNING: This file is generated by generate_standalone_timeline_view.py
#
#        Do not edit directly.
#
"""

def _sopen(filename, mode):
  if filename != '-':
    return open(filename, mode)
  return os.fdopen(os.dup(sys.stdout.fileno()), 'w')

def _get_input_filenames():
  return [os.path.join(srcdir, f)
          for f in ['base.js', 'timeline_view.js']]

def generate_css():
  filenames = _get_input_filenames()
  load_sequence = parse_deps.calc_load_sequence(filenames, srcdir)

  style_sheet_chunks = [css_warning_message, '\n']
  for module in load_sequence:
    for style_sheet in module.style_sheets:
      style_sheet_chunks.append("""%s\n""" % style_sheet.contents)

  return ''.join(style_sheet_chunks)

def generate_js():
  filenames = _get_input_filenames()
  load_sequence = parse_deps.calc_load_sequence(filenames, srcdir)

  js_chunks = [js_warning_message, '\n']
  js_chunks.append("window.FLATTENED = {};\n")

  for module in load_sequence:
    js_chunks.append( "window.FLATTENED['%s'] = true;\n" % module.name)

  for module in load_sequence:
    js_chunks.append(module.contents)
    js_chunks.append("\n")

  return ''.join(js_chunks)

def main(args):
  parser = optparse.OptionParser(
    usage="%prog --js=<filename> --css=<filename>",
    epilog="""
A script to takes all of the javascript and css files that comprise trace-viewer
and merges them together into two giant js and css files, taking into account various
ordering restrictions between them.
""")
  parser.add_option("--js", dest="js_file",
                    help="Where to place generated javascript file")
  parser.add_option("--css", dest="css_file",
                    help="Where to place generated css file")
  options, args = parser.parse_args(args)

  if not options.js_file and not options.css_file:
    sys.stderr.write("ERROR: Must specify one or both of --js=<filename> or --css=<filename>\n\n")
    parser.print_help()
    return 1

  if options.js_file:
    with _sopen(options.js_file, 'w') as f:
      f.write(generate_js())

  if options.css_file:
    with _sopen(options.css_file, 'w') as f:
      f.write(generate_css())

  return 0


if __name__ == "__main__":
  sys.exit(main(sys.argv))