generate_manifest.py revision 1320f92c476a1ad9d19dba2a48c72b75566198e9 
1#!/usr/bin/env python
2
3# Copyright 2014 The Chromium Authors. All rights reserved.
4# Use of this source code is governed by a BSD-style license that can be
5# found in the LICENSE file.
6
7import json
8import io
9import optparse
10import os
11import sys
12
13jinja2_path = os.path.normpath(os.path.join(os.path.abspath(__file__),
14                           *[os.path.pardir] * 7 + ['third_party']))
15nom_path = os.path.normpath(os.path.join(os.path.abspath(__file__),
16    *[os.path.pardir] * 7 + ['tools/json_comment_eater']))
17sys.path.insert(0, jinja2_path)
18sys.path.insert(0, nom_path)
19import jinja2
20from json_comment_eater import Nom
21
22
23'''Generate an extension manifest based on a template.'''
24
25
26def processJinjaTemplate(input_file, output_file, context):
27  (template_path, template_name) = os.path.split(input_file)
28  env = jinja2.Environment(loader=jinja2.FileSystemLoader(template_path),
29                           trim_blocks=True)
30  template = env.get_template(template_name)
31  rendered = template.render(context)
32  rendered_without_comments = Nom(rendered)
33  # Simply for validation.
34  json.loads(rendered_without_comments)
35  with io.open(output_file, 'w', encoding='utf-8') as manifest_file:
36    manifest_file.write(rendered_without_comments)
37
38
39def main():
40  parser = optparse.OptionParser(description=__doc__)
41  parser.usage = '%prog [options] <template_manifest_path>'
42  parser.add_option(
43      '-o', '--output_manifest', action='store', metavar='OUTPUT_MANIFEST',
44      help='File to place generated manifest')
45  parser.add_option(
46      '-g', '--is_guest_manifest', action='store', metavar='GUEST_MANIFEST',
47      help='Generate a guest mode capable manifest')
48  parser.add_option(
49      '--use_chromevox_next', action='store', metavar='CHROMEVOX2',
50      help='Generate a ChromeVox next manifest')
51  parser.add_option(
52      '--set_version', action='store', metavar='SET_VERSION',
53      help='Set the extension version')
54  parser.add_option(
55      '--key', action='store', metavar='KEY',
56      help='Set the extension key')
57
58  options, args = parser.parse_args()
59  if len(args) != 1:
60    print >>sys.stderr, 'Expected exactly one argument'
61    sys.exit(1)
62  processJinjaTemplate(args[0], options.output_manifest, parser.values.__dict__)
63
64if __name__ == '__main__':
65  main()
66