generate_manifest.py revision cedac228d2dd51db4b79ea1e72c7f249408ee061 
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  template = env.get_template(template_name)
30  rendered = template.render(context)
31  rendered_without_comments = Nom(rendered)
32  # Simply for validation.
33  json.loads(rendered_without_comments)
34  with io.open(output_file, 'w', encoding='utf-8') as manifest_file:
35    manifest_file.write(rendered_without_comments)
36
37
38def main():
39  parser = optparse.OptionParser(description=__doc__)
40  parser.usage = '%prog [options] <template_manifest_path>'
41  parser.add_option(
42      '-o', '--output_manifest', action='store', metavar='OUTPUT_MANIFEST',
43      help='File to place generated manifest')
44  parser.add_option(
45      '-g', '--is_guest_manifest', action='store', metavar='GUEST_MANIFEST',
46      help='Generate a guest mode capable manifest')
47
48  options, args = parser.parse_args()
49  if len(args) != 1:
50    print >>sys.stderr, 'Expected exactly one argument'
51    sys.exit(1)
52  processJinjaTemplate(args[0], options.output_manifest, parser.values.__dict__)
53
54if __name__ == '__main__':
55  main()
56