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#!/usr/bin/env python3
# Copyright 2014 The Chromium Authors
# Use of this source code is governed by a BSD-style license that can be
# found in the LICENSE file.
"""Scans the Chromium source of UseCounter, formats the Feature enum for
histograms.xml and merges it. This script can also generate a python code
snippet to put in uma.py of Chromium Dashboard. Make sure that you review the
output for correctness.
"""
from __future__ import print_function
import optparse
import os
import sys
from update_histogram_enum import ReadHistogramValues
from update_histogram_enum import UpdateHistogramEnum
def PrintEnumForDashboard(dictionary):
"""Prints dictionary formatted for use in uma.py of Chromium dashboard."""
for key, value in sorted(dictionary.items()):
print(' %d: \'%s\',' % (key, value))
if __name__ == '__main__':
parser = optparse.OptionParser()
parser.add_option('--for-dashboard', action='store_true', dest='dashboard',
default=False,
help='Print enum definition formatted for use in uma.py of '
'Chromium dashboard developed at '
'https://github.com/GoogleChrome/chromium-dashboard')
options, args = parser.parse_args()
source_path = 'third_party/blink/public/mojom/use_counter/metrics/web_feature.mojom'
START_MARKER = '^enum WebFeature {'
END_MARKER = '^kNumberOfFeatures'
if options.dashboard:
enum_dict = ReadHistogramValues(source_path,
START_MARKER,
END_MARKER,
strip_k_prefix=True)
PrintEnumForDashboard(enum_dict)
else:
UpdateHistogramEnum(
histogram_enum_name='FeatureObserver',
source_enum_path=source_path,
start_marker=START_MARKER,
end_marker=END_MARKER,
strip_k_prefix=True,
calling_script=os.path.basename(__file__))
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