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# exceptions.py - collection of stdnum exceptions
# coding: utf-8
#
# Copyright (C) 2013 Arthur de Jong
#
# This library is free software; you can redistribute it and/or
# modify it under the terms of the GNU Lesser General Public
# License as published by the Free Software Foundation; either
# version 2.1 of the License, or (at your option) any later version.
#
# This library 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
# Lesser General Public License for more details.
#
# You should have received a copy of the GNU Lesser General Public
# License along with this library; if not, write to the Free Software
# Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
# 02110-1301 USA
"""Collection of exceptions.
The validation functions of stdnum should raise one of the below exceptions
when validation of the number fails.
"""
class ValidationError(Exception):
"""Top-level error for validating numbers.
This exception should normally not be raised, only subclasses of this
exception."""
def __str__(self):
return getattr(self, 'message', '')
class InvalidFormat(ValidationError):
"""Something is wrong with the format of the number.
This generally means characters or delimiters that are not allowed are
part of the number or required parts are missing."""
message = 'The number has an invalid format.'
class InvalidChecksum(ValidationError):
"""The number's internal checksum or check digit does not match."""
message = "The number's checksum or check digit is invalid."
class InvalidLength(InvalidFormat):
"""The length of the number is wrong."""
message = 'The number has an invalid length.'
class InvalidComponent(ValidationError):
"""One of the parts of the number has an invalid reference.
Some part of the number refers to some external entity like a country
code, a date or a predefined collection of values. The number contains
some invalid reference."""
message = 'One of the parts of the number are invalid or unknown.'