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#!/usr/bin/python
# Copyright 2015 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.
"""Common utilites used by cygprofile scripts.
"""
import logging
import os
import re
class WarningCollector(object):
"""Collects warnings, but limits the number printed to a set value."""
def __init__(self, max_warnings):
self._warnings = 0
self._max_warnings = max_warnings
def Write(self, message):
"""Print a warning if fewer than max_warnings have already been printed."""
if self._warnings < self._max_warnings:
logging.warning(message)
self._warnings += 1
def WriteEnd(self, message):
"""Once all warnings have been printed, use this to print the number of
elided warnings."""
if self._warnings > self._max_warnings:
logging.warning('%d more warnings for: %s' % (
self._warnings - self._max_warnings, message))
def DetectArchitecture(default='arm'):
"""Detects the architecture by looking for target_arch in GYP_DEFINES.
If not not found, returns default.
"""
gyp_defines = os.environ.get('GYP_DEFINES', '')
match = re.match('target_arch=(\S+)', gyp_defines)
if match and len(match.groups()) == 1:
return match.group(1)
else:
return default
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