# Copyright (C) 1998-2018 by the Free Software Foundation, Inc.
#
# This program is free software; you can redistribute it and/or
# modify it under the terms of the GNU General Public License
# as published by the Free Software Foundation; either version 2
# of the License, or (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program; if not, write to the Free Software
# Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
import sys
import traceback
def _logexc(logger=None, msg=''):
sys.__stderr__.write('Logging error: %s\n' % logger)
traceback.print_exc(file=sys.__stderr__)
sys.__stderr__.write('Original log message:\n%s\n' % msg)
def LogStdErr(category, label, manual_reprime=1, tee_to_real_stderr=1):
"""Establish a StampedLogger on sys.stderr if possible.
If tee_to_real_stderr is true, then the real standard error also gets
output, via a MultiLogger.
Returns the MultiLogger if successful, None otherwise.
"""
from StampedLogger import StampedLogger
from MultiLogger import MultiLogger
try:
logger = StampedLogger(category,
label=label,
manual_reprime=manual_reprime,
nofail=0)
if tee_to_real_stderr:
if hasattr(sys, '__stderr__'):
stderr = sys.__stderr__
else:
stderr = sys.stderr
logger = MultiLogger(stderr, logger)
sys.stderr = logger
return sys.stderr
except IOError:
return None
