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#!/usr/bin/env python
# Copyright 2014 The Chromium Authors. All rights reserved.
# Use of this source code is governed by a BSD-style license that can be
# found in the LICENSE file.
"""Updates NetErrorCodes enum in histograms.xml file with values read
from net_error_list.h.
If the file was pretty-printed, the updated version is pretty-printed too.
"""
import os.path
import re
import sys
sys.path.append(os.path.join(os.path.dirname(__file__), '..', 'common'))
import path_util
import update_histogram_enum
NET_ERROR_LIST_PATH = 'net/base/net_error_list.h'
POSITIVE_ERROR_REGEX = re.compile(r'^NET_ERROR\(([\w]+), -([0-9]+)\)')
NEGATIVE_ERROR_REGEX = re.compile(r'^NET_ERROR\(([\w]+), (-[0-9]+)\)')
def ReadNetErrorCodes(filename, error_regex):
"""Reads in values from net_error_list.h, returning a dictionary mapping
error code to error name.
"""
# Read the file as a list of lines
with open(path_util.GetInputFile(filename)) as f:
content = f.readlines()
# Parse out lines that are net errors.
errors = {}
for line in content:
m = error_regex.match(line)
if m:
errors[int(m.group(2))] = m.group(1)
return errors
def main():
if len(sys.argv) > 1:
print >>sys.stderr, 'No arguments expected!'
sys.stderr.write(__doc__)
sys.exit(1)
update_histogram_enum.UpdateHistogramFromDict(
'NetErrorCodes',
ReadNetErrorCodes(NET_ERROR_LIST_PATH, POSITIVE_ERROR_REGEX),
NET_ERROR_LIST_PATH)
update_histogram_enum.UpdateHistogramFromDict(
'CombinedHttpResponseAndNetErrorCode',
ReadNetErrorCodes(NET_ERROR_LIST_PATH, NEGATIVE_ERROR_REGEX),
NET_ERROR_LIST_PATH)
if __name__ == '__main__':
main()
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