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# Copyright (c) 2005-2007 Forest Bond.
# This file is part of the sclapp software package.
#
# sclapp is free software; you can redistribute it and/or modify it under the
# terms of the GNU General Public License version 2 as published by the Free
# Software Foundation.
#
# A copy of the license has been included in the COPYING file.
'''This module implements sclapp exceptions.'''
from sclapp.util import safe_encode, safe_decode
class Error(Exception):
'''Base exception for other exceptions defined in this module.'''
class CriticalError(Error):
'''Indicates a fatal error.'''
code = None
message = None
def __init__(self, code = 0, message = u''):
if type(code) != int:
raise ValueError, (
u'first argument to CriticalError initializer '
'should be an integer'
)
self.code = code
self.message = message
Error.__init__(self)
def __str__(self):
return safe_encode(self.message)
def __unicode__(self):
return safe_decode(self.message)
class UsageError(CriticalError):
'''Indicates a usage error.'''
def __init__(self, message = None):
if message is not None:
code = -1
else:
code = 0
CriticalError.__init__(self, code, message)
class SignalError(Error):
'''Indicates that a notify signal has been caught.'''
def __init__(self, signum):
self.signum = signum
Error.__init__(self)
def __str__(self):
return 'caught signal %i' % self.signum
class ExitSignalError(CriticalError):
'''Indicates that an exit signal has been caught.'''
def __init__(self, signum):
self.signum = signum
CriticalError.__init__(self)
def __str__(self):
return 'caught exit signal %i' % self.signum
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