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# 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
class WarningCollector(object):
"""Collects warnings, but limits the number printed to a set value."""
def __init__(self, max_warnings, level=logging.WARNING):
self._warnings = 0
self._max_warnings = max_warnings
self._level = level
def Write(self, message):
"""Prints a warning if fewer than max_warnings have already been printed."""
if self._warnings < self._max_warnings:
logging.log(self._level, 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.log(self._level, '%d more warnings for: %s' % (
self._warnings - self._max_warnings, message))
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