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#
# errors.py: Kickstart error handling.
#
# Chris Lumens <clumens@redhat.com>
#
# This copyrighted material is made available to anyone wishing to use, modify,
# copy, or redistribute it subject to the terms and conditions of the GNU
# General Public License v.2. This program is distributed in the hope that it
# will be useful, but WITHOUT ANY WARRANTY expressed or implied, including the
# implied warranties 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. Any Red Hat
# trademarks that are incorporated in the source code or documentation are not
# subject to the GNU General Public License and may only be used or replicated
# with the express permission of Red Hat, Inc.
#
"""
Error handling classes and functions.
This module exports a single function:
formatErrorMsg - Properly formats an error message.
It also exports several exception classes:
KickstartError - A generic exception class.
KickstartParseError - An exception for errors relating to parsing.
KickstartValueError - An exception for errors relating to option
processing.
KickstartVersionError - An exception for errors relating to unsupported
syntax versions.
"""
import gettext
_ = lambda x: gettext.ldgettext("pykickstart", x)
def formatErrorMsg(lineno, msg=""):
"""Properly format the error message msg for inclusion in an exception."""
if msg != "":
mapping = {"lineno": lineno, "msg": msg}
return _("The following problem occurred on line %(lineno)s of the kickstart file:\n\n%(msg)s\n") % mapping
else:
return _("There was a problem reading from line %s of the kickstart file") % lineno
class KickstartError(Exception):
"""A generic exception class for unspecific error conditions."""
def __init__(self, val = ""):
"""Create a new KickstartError exception instance with the descriptive
message val. val should be the return value of formatErrorMsg.
"""
Exception.__init__(self)
self.value = val
def __str__ (self):
return self.value
class KickstartParseError(KickstartError):
"""An exception class for errors when processing the input file, such as
unknown options, commands, or sections.
"""
def __init__(self, msg):
"""Create a new KickstartParseError exception instance with the
descriptive message val. val should be the return value of
formatErrorMsg.
"""
KickstartError.__init__(self, msg)
def __str__(self):
return self.value
class KickstartValueError(KickstartError):
"""An exception class for errors when processing arguments to commands,
such as too many arguments, too few arguments, or missing required
arguments.
"""
def __init__(self, msg):
"""Create a new KickstartValueError exception instance with the
descriptive message val. val should be the return value of
formatErrorMsg.
"""
KickstartError.__init__(self, msg)
def __str__ (self):
return self.value
class KickstartVersionError(KickstartError):
"""An exception class for errors related to using an incorrect version of
kickstart syntax.
"""
def __init__(self, msg):
"""Create a new KickstartVersionError exception instance with the
descriptive message val. val should be the return value of
formatErrorMsg.
"""
KickstartError.__init__(self, msg)
def __str__ (self):
return self.value
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