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# Copyright 2016 The Chromium Authors
# Use of this source code is governed by a BSD-style license that can be
# found in the LICENSE file.
class ExternsChecker(object):
_UPDATE_MESSAGE_HDR = 'To update the externs, run:\n'
_UPDATE_MESSAGE_CMD = (
' src/ $ python3 tools/json_schema_compiler/compiler.py %s'
' --root=. --generator=externs > %s')
def __init__(self, input_api, output_api, api_pairs=None, api_root=None):
if api_pairs is None:
api_pairs = self.ParseApiFileList(input_api, api_root=api_root)
self._input_api = input_api
self._output_api = output_api
self._api_pairs = api_pairs
for path in list(api_pairs.keys()) + list(api_pairs.values()):
if not input_api.os_path.exists(path):
raise OSError('Path Not Found: %s' % path)
@staticmethod
def ParseApiFileList(input_api, api_root=None):
"""Extract the API pairs from the registered list."""
if api_root is None:
api_root = input_api.PresubmitLocalPath()
externs_root = input_api.os_path.join(
input_api.change.RepositoryRoot(), 'third_party', 'closure_compiler',
'externs')
ret = {}
listing = input_api.os_path.join(api_root, 'generated_externs_list.txt')
for line in input_api.ReadFile(listing).splitlines():
# Skip blank & comment lines.
if not line.split('#', 1)[0].strip():
continue
source = input_api.os_path.join(api_root, line)
api_name, ext = line.rsplit('.', 1)
assert ext == 'json' or ext == 'idl'
externs = input_api.os_path.join(externs_root, api_name + '.js')
ret[source] = externs
assert ret
return ret
def RunChecks(self):
bad_files = []
affected = [f.AbsoluteLocalPath() for f in
self._input_api.change.AffectedFiles()]
for path in affected:
pair = self._api_pairs.get(path)
if pair != None and pair not in affected:
bad_files.append({'source': path, 'extern': pair})
results = []
if bad_files:
long_text = self._UPDATE_MESSAGE_HDR + '\n'.join(
self._UPDATE_MESSAGE_CMD % (f['source'], f['extern'])
for f in bad_files)
results.append(self._output_api.PresubmitPromptWarning(
str('Found updated extension api files without updated extern files. '
'Please update the extern files.'),
[f['source'] for f in bad_files],
long_text))
return results
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