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/ dulwich |
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# errors.py -- errors for dulwich
# Copyright (C) 2007 James Westby <jw+debian@jameswestby.net>
# Copyright (C) 2009 Jelmer Vernooij <jelmer@samba.org>
#
# This program is free software; you can redistribute it and/or
# modify it under the terms of the GNU General Public License
# as published by the Free Software Foundation; version 2
# or (at your option) any later version of the License.
#
# This program 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 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.
"""Dulwich-related exception classes and utility functions."""
import binascii
class ChecksumMismatch(Exception):
"""A checksum didn't match the expected contents."""
def __init__(self, expected, got, extra=None):
if len(expected) == 20:
expected = binascii.hexlify(expected)
if len(got) == 20:
got = binascii.hexlify(got)
self.expected = expected
self.got = got
self.extra = extra
if self.extra is None:
Exception.__init__(self,
"Checksum mismatch: Expected %s, got %s" % (expected, got))
else:
Exception.__init__(self,
"Checksum mismatch: Expected %s, got %s; %s" %
(expected, got, extra))
class WrongObjectException(Exception):
"""Baseclass for all the _ is not a _ exceptions on objects.
Do not instantiate directly.
Subclasses should define a type_name attribute that indicates what
was expected if they were raised.
"""
def __init__(self, sha, *args, **kwargs):
Exception.__init__(self, "%s is not a %s" % (sha, self.type_name))
class NotCommitError(WrongObjectException):
"""Indicates that the sha requested does not point to a commit."""
type_name = 'commit'
class NotTreeError(WrongObjectException):
"""Indicates that the sha requested does not point to a tree."""
type_name = 'tree'
class NotTagError(WrongObjectException):
"""Indicates that the sha requested does not point to a tag."""
type_name = 'tag'
class NotBlobError(WrongObjectException):
"""Indicates that the sha requested does not point to a blob."""
type_name = 'blob'
class MissingCommitError(Exception):
"""Indicates that a commit was not found in the repository"""
def __init__(self, sha, *args, **kwargs):
self.sha = sha
Exception.__init__(self, "%s is not in the revision store" % sha)
class ObjectMissing(Exception):
"""Indicates that a requested object is missing."""
def __init__(self, sha, *args, **kwargs):
Exception.__init__(self, "%s is not in the pack" % sha)
class ApplyDeltaError(Exception):
"""Indicates that applying a delta failed."""
def __init__(self, *args, **kwargs):
Exception.__init__(self, *args, **kwargs)
class NotGitRepository(Exception):
"""Indicates that no Git repository was found."""
def __init__(self, *args, **kwargs):
Exception.__init__(self, *args, **kwargs)
class GitProtocolError(Exception):
"""Git protocol exception."""
def __init__(self, *args, **kwargs):
Exception.__init__(self, *args, **kwargs)
class SendPackError(GitProtocolError):
"""An error occurred during send_pack."""
def __init__(self, *args, **kwargs):
Exception.__init__(self, *args, **kwargs)
class UpdateRefsError(GitProtocolError):
"""The server reported errors updating refs."""
def __init__(self, *args, **kwargs):
self.ref_status = kwargs.pop('ref_status')
Exception.__init__(self, *args, **kwargs)
class HangupException(GitProtocolError):
"""Hangup exception."""
def __init__(self):
Exception.__init__(self,
"The remote server unexpectedly closed the connection.")
class UnexpectedCommandError(GitProtocolError):
"""Unexpected command received in a proto line."""
def __init__(self, command):
if command is None:
command = 'flush-pkt'
else:
command = 'command %s' % command
GitProtocolError.__init__(self, 'Protocol got unexpected %s' % command)
class FileFormatException(Exception):
"""Base class for exceptions relating to reading git file formats."""
class PackedRefsException(FileFormatException):
"""Indicates an error parsing a packed-refs file."""
class ObjectFormatException(FileFormatException):
"""Indicates an error parsing an object."""
class NoIndexPresent(Exception):
"""No index is present."""
class CommitError(Exception):
"""An error occurred while performing a commit."""
class RefFormatError(Exception):
"""Indicates an invalid ref name."""
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