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##############################################################################
#
# Copyright (c) 2002 Zope Foundation and Contributors.
# All Rights Reserved.
#
# This software is subject to the provisions of the Zope Public License,
# Version 2.1 (ZPL). A copy of the ZPL should accompany this distribution.
# THIS SOFTWARE IS PROVIDED "AS IS" AND ANY AND ALL EXPRESS OR IMPLIED
# WARRANTIES ARE DISCLAIMED, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
# WARRANTIES OF TITLE, MERCHANTABILITY, AGAINST INFRINGEMENT, AND FITNESS
# FOR A PARTICULAR PURPOSE.
#
##############################################################################
"""Standard configuration errors
"""
import traceback
__all__ = [
'ConfigurationError',
]
class ConfigurationError(Exception):
"""There was an error in a configuration
"""
# A list of strings or things that can be converted to strings,
# added by append_details as we walk back up the call/include stack.
# We will print them in reverse order so that the most recent detail is
# last.
_details = ()
def add_details(self, info):
if isinstance(info, BaseException):
info = traceback.format_exception_only(type(info), info)
# Trim trailing newline
info[-1] = info[-1].rstrip()
self._details += tuple(info)
else:
self._details += (info,)
return self
def _with_details(self, opening, detail_formatter):
lines = [' ' + detail_formatter(detail) for detail in self._details]
lines.append(opening)
lines.reverse()
return '\n'.join(lines)
def __str__(self):
s = super(ConfigurationError, self).__str__()
return self._with_details(s, str)
def __repr__(self):
s = super(ConfigurationError, self).__repr__()
return self._with_details(s, repr)
class ConfigurationWrapperError(ConfigurationError):
USE_INFO_REPR = False
def __init__(self, info, exception):
super(ConfigurationWrapperError, self).__init__(
repr(info) if self.USE_INFO_REPR else info)
self.add_details(exception)
# This stuff is undocumented and not used but we store
# for backwards compatibility
self.info = info
self.etype = type(exception)
self.evalue = exception
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