1# Copyright (c) 2012 The Chromium Authors. All rights reserved.
2# Use of this source code is governed by a BSD-style license that can be
3# found in the LICENSE file.
4
5"""Presubmit script for changes affecting extensions.
6
7See http://dev.chromium.org/developers/how-tos/depottools/presubmit-scripts
8for more details about the presubmit API built into gcl.
9"""
10import fnmatch
11import os
12import re
13
14EXTENSIONS_PATH = os.path.join('chrome', 'common', 'extensions')
15DOCS_PATH = os.path.join(EXTENSIONS_PATH, 'docs')
16SERVER2_PATH = os.path.join(DOCS_PATH, 'server2')
17API_PATH = os.path.join(EXTENSIONS_PATH, 'api')
18TEMPLATES_PATH = os.path.join(DOCS_PATH, 'templates')
19PRIVATE_TEMPLATES_PATH = os.path.join(TEMPLATES_PATH, 'private')
20PUBLIC_TEMPLATES_PATH = os.path.join(TEMPLATES_PATH, 'public')
21INTROS_PATH = os.path.join(TEMPLATES_PATH, 'intros')
22ARTICLES_PATH = os.path.join(TEMPLATES_PATH, 'articles')
23
24LOCAL_PUBLIC_TEMPLATES_PATH = os.path.join('docs',
25                                           'templates',
26                                           'public')
27
28EXTENSIONS_TO_REMOVE_FOR_CLEAN_URLS = ('.md', '.html')
29
30def _ReadFile(filename):
31  with open(filename) as f:
32    return f.read()
33
34def _ListFilesInPublic():
35  all_files = []
36  for path, dirs, files in os.walk(LOCAL_PUBLIC_TEMPLATES_PATH):
37    all_files.extend(
38        os.path.join(path, filename)[len(LOCAL_PUBLIC_TEMPLATES_PATH + os.sep):]
39        for filename in files)
40  return all_files
41
42def _UnixName(name):
43  name = os.path.splitext(name)[0]
44  s1 = re.sub('([a-z])([A-Z])', r'\1_\2', name)
45  s2 = re.sub('([A-Z]+)([A-Z][a-z])', r'\1_\2', s1)
46  return s2.replace('.', '_').lower()
47
48def _FindMatchingTemplates(template_name, template_path_list):
49  matches = []
50  unix_name = _UnixName(template_name)
51  for template in template_path_list:
52    if unix_name == _UnixName(template.split(os.sep)[-1]):
53      basename, ext = os.path.splitext(template)
54      # The docserver expects clean (extensionless) template URLs, so we
55      # strip some extensions here when generating the list of matches.
56      if ext in EXTENSIONS_TO_REMOVE_FOR_CLEAN_URLS:
57        matches.append(basename)
58      else:
59        matches.append(template)
60  return matches
61
62def _SanitizeAPIName(name, api_path):
63  if not api_path.endswith(os.sep):
64    api_path += os.sep
65  filename = os.path.splitext(name)[0][len(api_path):].replace(os.sep, '_')
66  if 'experimental' in filename:
67    filename = 'experimental_' + filename.replace('experimental_', '')
68  return filename
69
70def _CreateIntegrationTestArgs(affected_files):
71  if (any(fnmatch.fnmatch(name, '%s*.py' % SERVER2_PATH)
72         for name in affected_files) or
73      any(fnmatch.fnmatch(name, '%s*' % PRIVATE_TEMPLATES_PATH)
74          for name in affected_files)):
75    return ['-a']
76  args = []
77  for name in affected_files:
78    if (fnmatch.fnmatch(name, '%s*' % PUBLIC_TEMPLATES_PATH) or
79        fnmatch.fnmatch(name, '%s*' % INTROS_PATH) or
80        fnmatch.fnmatch(name, '%s*' % ARTICLES_PATH)):
81      args.extend(_FindMatchingTemplates(name.split(os.sep)[-1],
82                                         _ListFilesInPublic()))
83    if fnmatch.fnmatch(name, '%s*' % API_PATH):
84      args.extend(_FindMatchingTemplates(_SanitizeAPIName(name, API_PATH),
85                                         _ListFilesInPublic()))
86  return args
87
88def _CheckHeadingIDs(input_api):
89  ids_re = re.compile('<h[23].*id=.*?>')
90  headings_re = re.compile('<h[23].*?>')
91  bad_files = []
92  for name in input_api.AbsoluteLocalPaths():
93    if not os.path.exists(name):
94      continue
95    if (fnmatch.fnmatch(name, '*%s*' % INTROS_PATH) or
96        fnmatch.fnmatch(name, '*%s*' % ARTICLES_PATH)):
97      contents = input_api.ReadFile(name)
98      if (len(re.findall(headings_re, contents)) !=
99          len(re.findall(ids_re, contents))):
100        bad_files.append(name)
101  return bad_files
102
103def _CheckLinks(input_api, output_api, results):
104  for affected_file in input_api.AffectedFiles():
105    name = affected_file.LocalPath()
106    absolute_path = affected_file.AbsoluteLocalPath()
107    if not os.path.exists(absolute_path):
108      continue
109    if (fnmatch.fnmatch(name, '%s*' % PUBLIC_TEMPLATES_PATH) or
110        fnmatch.fnmatch(name, '%s*' % INTROS_PATH) or
111        fnmatch.fnmatch(name, '%s*' % ARTICLES_PATH) or
112        fnmatch.fnmatch(name, '%s*' % API_PATH)):
113      contents = _ReadFile(absolute_path)
114      args = []
115      if input_api.platform == 'win32':
116        args = [input_api.python_executable]
117      args.extend([os.path.join('docs', 'server2', 'link_converter.py'),
118                   '-o',
119                   '-f',
120                   absolute_path])
121      output = input_api.subprocess.check_output(
122          args,
123          cwd=input_api.PresubmitLocalPath(),
124          universal_newlines=True)
125      if output != contents:
126        changes = ''
127        for i, (line1, line2) in enumerate(
128            zip(contents.split('\n'), output.split('\n'))):
129          if line1 != line2:
130            changes = ('%s\nLine %d:\n-%s\n+%s\n' %
131                (changes, i + 1, line1, line2))
132        if changes:
133          results.append(output_api.PresubmitPromptWarning(
134              'File %s may have an old-style <a> link to an API page. Please '
135              'run docs/server2/link_converter.py to convert the link[s], or '
136              'convert them manually.\n\nSuggested changes are: %s' %
137              (name, changes)))
138
139def _CheckChange(input_api, output_api):
140  results = [
141      output_api.PresubmitError('File %s needs an id for each heading.' % name)
142      for name in _CheckHeadingIDs(input_api)]
143  try:
144    integration_test = []
145    # From depot_tools/presubmit_canned_checks.py:529
146    if input_api.platform == 'win32':
147      integration_test = [input_api.python_executable]
148    integration_test.append(
149        os.path.join('docs', 'server2', 'integration_test.py'))
150    integration_test.extend(_CreateIntegrationTestArgs(input_api.LocalPaths()))
151    input_api.subprocess.check_call(integration_test,
152                                    cwd=input_api.PresubmitLocalPath())
153  except input_api.subprocess.CalledProcessError:
154    results.append(output_api.PresubmitError('IntegrationTest failed!'))
155
156  # TODO(kalman): Re-enable this check, or decide to delete it forever. Now
157  # that we have multiple directories it no longer works.
158  # See http://crbug.com/297178.
159  #_CheckLinks(input_api, output_api, results)
160
161  return results
162
163def CheckChangeOnUpload(input_api, output_api):
164  results = []
165  results += input_api.canned_checks.CheckPatchFormatted(input_api, output_api)
166  results += _CheckChange(input_api, output_api)
167  return results
168
169def CheckChangeOnCommit(input_api, output_api):
170  return _CheckChange(input_api, output_api)
171