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#!/usr/bin/env python
# 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.
"""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.
"""
from __future__ import print_function
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:
name = m.group(1)
code = int(m.group(2))
# CERT_END is not a real NET_ERROR and does not have a stable value.
# Don't include it.
if name == 'CERT_END':
continue
errors[code] = name
return errors
def main():
if len(sys.argv) > 1:
print('No arguments expected!', file=sys.stderr)
sys.stderr.write(__doc__)
sys.exit(1)
update_histogram_enum.UpdateHistogramFromDict(
'tools/metrics/histograms/enums.xml', 'NetErrorCodes',
ReadNetErrorCodes(NET_ERROR_LIST_PATH, POSITIVE_ERROR_REGEX),
NET_ERROR_LIST_PATH, os.path.basename(__file__))
update_histogram_enum.UpdateHistogramFromDict(
'tools/metrics/histograms/enums.xml',
'CombinedHttpResponseAndNetErrorCode',
ReadNetErrorCodes(NET_ERROR_LIST_PATH,
NEGATIVE_ERROR_REGEX), NET_ERROR_LIST_PATH,
os.path.basename(__file__))
if __name__ == '__main__':
main()
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