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# -*- Mode:Python; indent-tabs-mode:nil; tab-width:4 -*-
#
# Copyright 2002 Ben Escoto <ben@emerose.org>
# Copyright 2007 Kenneth Loafman <kenneth@loafman.com>
#
# This file is part of duplicity.
#
# Duplicity 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.
#
# Duplicity 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 duplicity; if not, write to the Free Software Foundation,
# Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
"""
Miscellaneous utilities.
"""
import string
import sys
import traceback
import duplicity.globals as globals
import duplicity.log as log
def exception_traceback(limit = 50):
"""
@return A string representation in typical Python format of the
currently active/raised exception.
"""
type, value, tb = sys.exc_info()
lines = traceback.format_tb(tb, limit)
lines.extend(traceback.format_exception_only(type, value))
str = "Traceback (innermost last):\n"
str = str + "%-20s %s" % (string.join(lines[:-1], ""),
lines[-1])
return str
def escape(string):
return "'%s'" % string.encode("string-escape")
def maybe_ignore_errors(fn):
"""
Execute fn. If the global configuration setting ignore_errors is
set to True, catch errors and log them but do continue (and return
None).
@param fn: A callable.
@return Whatever fn returns when called, or None if it failed and ignore_errors is true.
"""
try:
return fn()
except Exception, e:
if globals.ignore_errors:
log.Warn(_("IGNORED_ERROR: Warning: ignoring error as requested: %s: %s")
% (e.__class__.__name__, str(e)))
return None
else:
raise
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