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# Copyright 2017 The Chromium Authors
# Use of this source code is governed by a BSD-style license that can be
# found in the LICENSE file.
"""Check to see if the various BadMessage enums in histograms.xml need to be
updated. This can be called from a chromium PRESUBMIT.py to ensure updates to
bad_message.h also include the generated changes to histograms.xml
"""
import update_histogram_enum
def PrecheckBadMessage(input_api,
output_api,
histogram_name,
end_marker='^BAD_MESSAGE_MAX',
strip_k_prefix=False):
source_path = ''
# This function is called once per bad_message.h-containing directory. Check
# for the |bad_message.h| file, and if present, remember its path.
for f in input_api.AffectedFiles():
if f.LocalPath().endswith('bad_message.h'):
source_path = f.LocalPath()
break
# If the |bad_message.h| wasn't found in this change, then there is nothing to
# do and histogram.xml does not need to be updated.
if source_path == '':
return []
START_MARKER='^enum (class )?BadMessageReason {'
presubmit_error = update_histogram_enum.CheckPresubmitErrors(
histogram_enum_name=histogram_name,
update_script_name='update_bad_message_reasons.py',
source_enum_path=source_path,
start_marker=START_MARKER,
end_marker=end_marker,
strip_k_prefix=strip_k_prefix)
if presubmit_error:
return [output_api.PresubmitPromptWarning(presubmit_error,
items=[source_path])]
return []
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