104 lines
3.8 KiB
Python
104 lines
3.8 KiB
Python
#
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# errors.py: Kickstart error handling.
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#
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# Chris Lumens <clumens@redhat.com>
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#
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# This copyrighted material is made available to anyone wishing to use, modify,
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# copy, or redistribute it subject to the terms and conditions of the GNU
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# General Public License v.2. This program is distributed in the hope that it
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# will be useful, but WITHOUT ANY WARRANTY expressed or implied, including the
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# implied warranties of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
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# See the GNU General Public License for more details.
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#
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# You should have received a copy of the GNU General Public License along with
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# this program; if not, write to the Free Software Foundation, Inc., 51
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# Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. Any Red Hat
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# trademarks that are incorporated in the source code or documentation are not
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# subject to the GNU General Public License and may only be used or replicated
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# with the express permission of Red Hat, Inc.
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#
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"""
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Error handling classes and functions.
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This module exports a single function:
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formatErrorMsg - Properly formats an error message.
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It also exports several exception classes:
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KickstartError - A generic exception class.
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KickstartParseError - An exception for errors relating to parsing.
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KickstartValueError - An exception for errors relating to option
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processing.
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KickstartVersionError - An exception for errors relating to unsupported
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syntax versions.
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"""
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import gettext
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_ = lambda x: gettext.ldgettext("pykickstart", x)
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def formatErrorMsg(lineno, msg=""):
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"""Properly format the error message msg for inclusion in an exception."""
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if msg != "":
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mapping = {"lineno": lineno, "msg": msg}
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return _("The following problem occurred on line %(lineno)s of the kickstart file:\n\n%(msg)s\n") % mapping
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else:
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return _("There was a problem reading from line %s of the kickstart file") % lineno
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class KickstartError(Exception):
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"""A generic exception class for unspecific error conditions."""
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def __init__(self, val = ""):
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"""Create a new KickstartError exception instance with the descriptive
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message val. val should be the return value of formatErrorMsg.
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"""
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Exception.__init__(self)
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self.value = val
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def __str__ (self):
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return self.value
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class KickstartParseError(KickstartError):
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"""An exception class for errors when processing the input file, such as
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unknown options, commands, or sections.
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"""
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def __init__(self, msg):
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"""Create a new KickstartParseError exception instance with the
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descriptive message val. val should be the return value of
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formatErrorMsg.
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"""
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KickstartError.__init__(self, msg)
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def __str__(self):
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return self.value
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class KickstartValueError(KickstartError):
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"""An exception class for errors when processing arguments to commands,
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such as too many arguments, too few arguments, or missing required
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arguments.
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"""
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def __init__(self, msg):
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"""Create a new KickstartValueError exception instance with the
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descriptive message val. val should be the return value of
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formatErrorMsg.
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"""
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KickstartError.__init__(self, msg)
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def __str__ (self):
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return self.value
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class KickstartVersionError(KickstartError):
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"""An exception class for errors related to using an incorrect version of
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kickstart syntax.
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"""
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def __init__(self, msg):
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"""Create a new KickstartVersionError exception instance with the
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descriptive message val. val should be the return value of
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formatErrorMsg.
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"""
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KickstartError.__init__(self, msg)
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def __str__ (self):
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return self.value
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