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# Copyright (C) 2005, 2006 Canonical
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# This program is free software; you can redistribute it and/or modify
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# it under the terms of the GNU General Public License as published by
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# the Free Software Foundation; either version 2 of the License, or
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# (at your option) any later version.
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# This program is distributed in the hope that it will be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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# GNU General Public License for more details.
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# You should have received a copy of the GNU General Public License
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# along with this program; if not, write to the Free Software
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# Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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"""Exceptions for bzr, and reporting of them.
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There are 3 different classes of error:
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* KeyboardInterrupt, and OSError with EPIPE - the program terminates
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with an appropriate short message
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* User errors, indicating a problem caused by the user such as a bad URL.
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These are printed in a short form.
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* Internal unexpected errors, including most Python builtin errors
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and some raised from inside bzr. These are printed with a full
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traceback and an invitation to report the bug.
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Exceptions are caught at a high level to report errors to the user, and
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might also be caught inside the program. Therefore it needs to be
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possible to convert them to a meaningful string, and also for them to be
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* create a new exception class for any class of error that can be
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usefully distinguished.
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* the printable form of an exception is generated by the base class
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Exception strings should start with a capital letter and not have a final
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usefully distinguished. If no callers are likely to want to catch
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one but not another, don't worry about them.
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* the __str__ method should generate something useful; BzrError provides
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a good default implementation
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Exception strings should start with a capital letter and should not have a
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from warnings import warn
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from bzrlib.patches import (PatchSyntax,
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# based on Scott James Remnant's hct error classes
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# TODO: is there any value in providing the .args field used by standard
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# TODO: Convert all the other error classes here to BzrNewError, and eliminate
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# TODO: The pattern (from hct) of using classes docstrings as message
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# templates is cute but maybe not such a great idea - perhaps should have a
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# separate static message_template.
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class BzrError(StandardError):
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def __str__(self):
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# XXX: Should we show the exception class in
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# exceptions that don't provide their own message?
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class InvalidRevisionId(BzrNewError):
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"""Invalid revision-id {%(revision_id)s} in %(branch)s"""
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def __init__(self, revision_id, branch):
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# branch can be any string or object with __str__ defined
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BzrNewError.__init__(self)
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self.revision_id = revision_id
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self.branch = branch
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class NoWorkingTree(BzrNewError):
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"""No WorkingTree exists for %s(base)."""
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"""No WorkingTree exists for %(base)s."""
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def __init__(self, base):
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BzrNewError.__init__(self)
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class NotLocalUrl(BzrNewError):
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"""%s(url) is not a local path."""
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"""%(url)s is not a local path."""
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def __init__(self, url):
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BzrNewError.__init__(self)
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class BzrCommandError(BzrError):
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# Error from malformed user command
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# This is being misused as a generic exception
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# pleae subclass. RBC 20051030
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class BzrCommandError(BzrNewError):
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"""Error from user command"""
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# Error from malformed user command; please avoid raising this as a
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# generic exception not caused by user input.
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# I think it's a waste of effort to differentiate between errors that
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# are not intended to be caught anyway. UI code need not subclass
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# BzrCommandError, and non-UI code should not throw a subclass of
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# BzrCommandError. ADHB 20051211
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def __init__(self, msg):
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def __str__(self):
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class BzrOptionError(BzrCommandError):
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"""Some missing or otherwise incorrect option was supplied."""
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"""Error in command line options"""
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class StrictCommitFailed(Exception):
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"""Commit refused because there are unknowns in the tree."""
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class StrictCommitFailed(BzrNewError):
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"""Commit refused because there are unknown files in the tree"""
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# XXX: Should be unified with TransportError; they seem to represent the
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class PathError(BzrNewError):
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"""Generic path error: %(path)r%(extra)s)"""
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"""Permission denied: %(path)r%(extra)s"""
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class InvalidURL(PathError):
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"""Invalid url supplied to transport: %(path)r%(extra)s"""
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class InvalidURLJoin(PathError):
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"""Invalid URL join request: %(args)s%(extra)s"""
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def __init__(self, msg, base, args):
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PathError.__init__(self, base, msg)
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self.args.extend(args)
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class UnsupportedProtocol(PathError):
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"""Unsupported protocol for url "%(path)s"%(extra)s"""
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def __init__(self, url, extra):
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PathError.__init__(self, url, extra=extra)
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class PathNotChild(BzrNewError):
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"""Path %(path)r is not a child of path %(base)r%(extra)s"""
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is_user_error = False
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def __init__(self, path, base, extra=None):
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BzrNewError.__init__(self)
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class InvalidNormalization(PathError):
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"""Path %(path)r is not unicode normalized"""
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# TODO: This is given a URL; we try to unescape it but doing that from inside
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# the exception object is a bit undesirable.
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# TODO: Probably this behavior of should be a common superclass
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class NotBranchError(PathError):
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"""Not a branch: %(path)s"""
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def __init__(self, path):
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import bzrlib.urlutils as urlutils
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self.path = urlutils.unescape_for_display(path, 'ascii')
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class AlreadyBranchError(PathError):
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"""Already a branch: %(path)s. Use `bzr checkout` to build a working tree."""
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"""Already a branch: %(path)s."""
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class BranchExistsWithoutWorkingTree(PathError):
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"""Directory contains a branch, but no working tree \
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(use bzr checkout if you wish to build a working tree): %(path)s"""
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class AtomicFileAlreadyClosed(PathError):
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"""'%(function)s' called on an AtomicFile after it was closed: %(path)s"""
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def __init__(self, path, function):
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PathError.__init__(self, path=path, extra=None)
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self.function = function
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class NoRepositoryPresent(BzrNewError):
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"""Not repository present: %(path)r"""
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"""No repository present: %(path)r"""
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def __init__(self, bzrdir):
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BzrNewError.__init__(self)
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self.path = bzrdir.transport.clone('..').base
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class UnsupportedFormatError(BzrError):
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"""Specified path is a bzr branch that we recognize but cannot read."""
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return 'unsupported branch format: %s' % self.args[0]
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class UnknownFormatError(BzrError):
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"""Specified path is a bzr branch whose format we do not recognize."""
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return 'unknown branch format: %s' % self.args[0]
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class UnsupportedFormatError(BzrNewError):
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"""Unsupported branch format: %(format)s"""
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class UnknownFormatError(BzrNewError):
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"""Unknown branch format: %(format)r"""
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class IncompatibleFormat(BzrNewError):
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self.paths_as_string = ' '.join([quotefn(p) for p in paths])
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class BadFileKindError(BzrError):
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"""Specified file is of a kind that cannot be added.
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(For example a symlink or device file.)"""
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class ForbiddenFileError(BzrError):
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"""Cannot operate on a file because it is a control file."""
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class PathsDoNotExist(BzrNewError):
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"""Path(s) do not exist: %(paths_as_string)s"""
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# used when reporting that paths are neither versioned nor in the working
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def __init__(self, paths):
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from bzrlib.osutils import quotefn
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BzrNewError.__init__(self)
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self.paths_as_string = ' '.join([quotefn(p) for p in paths])
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class BadFileKindError(BzrNewError):
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"""Cannot operate on %(filename)s of unsupported kind %(kind)s"""
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class ForbiddenControlFileError(BzrNewError):
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"""Cannot operate on %(filename)s because it is a control file"""
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class LockError(BzrNewError):
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"""Commit refused because there are unknowns in the tree."""
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class NoSuchRevision(BzrError):
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class NoSuchRevision(BzrNewError):
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"""Branch %(branch)s has no revision %(revision)s"""
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is_user_error = False
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def __init__(self, branch, revision):
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self.branch = branch
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self.revision = revision
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msg = "Branch %s has no revision %s" % (branch, revision)
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BzrError.__init__(self, msg)
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class HistoryMissing(BzrError):
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% (branch, object_type, object_id))
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class DivergedBranches(BzrError):
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class DivergedBranches(BzrNewError):
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"These branches have diverged. Use the merge command to reconcile them."""
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def __init__(self, branch1, branch2):
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BzrError.__init__(self, "These branches have diverged. Try merge.")
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self.branch1 = branch1
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self.branch2 = branch2
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class UnrelatedBranches(BzrCommandError):
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msg = "Branches have no common ancestor, and no base revision"\
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BzrCommandError.__init__(self, msg)
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class NoCommonAncestor(BzrError):
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class UnrelatedBranches(BzrNewError):
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"Branches have no common ancestor, and no merge base revision was specified."
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class NoCommonAncestor(BzrNewError):
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"Revisions have no common ancestor: %(revision_a)s %(revision_b)s"
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def __init__(self, revision_a, revision_b):
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msg = "Revisions have no common ancestor: %s %s." \
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% (revision_a, revision_b)
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BzrError.__init__(self, msg)
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self.revision_a = revision_a
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self.revision_b = revision_b
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class NoCommonRoot(BzrError):
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def __init__(self, bases):
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warn("BzrError AmbiguousBase has been deprecated as of bzrlib 0.8.",
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DeprecationWarning)
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msg = "The correct base is unclear, becase %s are all equally close" %\
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msg = "The correct base is unclear, because %s are all equally close" %\
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BzrError.__init__(self, msg)
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self.bases = bases
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self.format = format
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class TransportError(BzrError):
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"""All errors thrown by Transport implementations should derive
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class TransportError(BzrNewError):
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"""Transport error: %(msg)s %(orig_error)s"""
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def __init__(self, msg=None, orig_error=None):
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if msg is None and orig_error is not None:
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msg = str(orig_error)
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BzrError.__init__(self, msg)
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if orig_error is None:
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self.orig_error = orig_error
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BzrNewError.__init__(self)
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# A set of semi-meaningful errors which can be thrown
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class TransportNotPossible(TransportError):
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"""This is for transports where a specific function is explicitly not
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possible. Such as pushing files to an HTTP server.
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"""Transport operation not possible: %(msg)s %(orig_error)%"""
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class ConnectionError(TransportError):
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"""A connection problem prevents file retrieval.
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This does not indicate whether the file exists or not; it indicates that a
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precondition for requesting the file was not met.
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def __init__(self, msg=None, orig_error=None):
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TransportError.__init__(self, msg=msg, orig_error=orig_error)
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"""Connection error: %(msg)s %(orig_error)s"""
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class ConnectionReset(TransportError):
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"""The connection has been closed."""
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"""Connection closed: %(msg)s %(orig_error)s"""
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class InvalidRange(TransportError):
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"""Invalid range access."""
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def __init__(self, path, offset):
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TransportError.__init__(self, ("Invalid range access in %s at %d"
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class InvalidHttpResponse(TransportError):
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"""Invalid http response for %(path)s: %(msg)s"""
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def __init__(self, path, msg, orig_error=None):
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TransportError.__init__(self, msg, orig_error=orig_error)
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class InvalidHttpRange(InvalidHttpResponse):
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"""Invalid http range "%(range)s" for %(path)s: %(msg)s"""
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def __init__(self, path, range, msg):
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InvalidHttpResponse.__init__(self, path, msg)
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class InvalidHttpContentType(InvalidHttpResponse):
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"""Invalid http Content-type "%(ctype)s" for %(path)s: %(msg)s"""
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def __init__(self, path, ctype, msg):
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InvalidHttpResponse.__init__(self, path, msg)
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class ConflictsInTree(BzrError):
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class NoBundleFound(BzrNewError):
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"""No bundle was found in %(filename)s"""
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def __init__(self, filename):
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BzrNewError.__init__(self)
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self.filename = filename
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class BundleNotSupported(BzrNewError):
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"""Unable to handle bundle version %(version)s: %(msg)s"""
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def __init__(self, version, msg):
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BzrNewError.__init__(self)
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self.version = version
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class MissingText(BzrNewError):
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"""Branch %(base)s is missing revision %(text_revision)s of %(file_id)s"""
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"""Parameter $(param)s is required but not present."""
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class BzrBadParameterUnicode(BzrBadParameter):
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"""Parameter %(param)s is unicode but only byte-strings are permitted."""
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class BzrBadParameterContainsNewline(BzrBadParameter):
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"""Parameter %(param)s contains a newline."""
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class DependencyNotPresent(BzrNewError):
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"""Unable to import library "%(library)s": %(error)s"""
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"""A nested progress bar was not 'finished' correctly."""
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class InvalidProgressBarType(BzrNewError):
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"""Environment variable BZR_PROGRESS_BAR='%(bar_type)s is not a supported type
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Select one of: %(valid_types)s"""
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def __init__(self, bar_type, valid_types):
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BzrNewError.__init__(self, bar_type=bar_type, valid_types=valid_types)
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class UnsupportedOperation(BzrNewError):
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"""The method %(mname)s is not supported on objects of type %(tname)s."""
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def __init__(self, method, method_self):
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self.method = method
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self.mname = method.__name__
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self.tname = type(method_self).__name__
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class BinaryFile(BzrNewError):
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"""File is binary but should be text."""
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class IllegalPath(BzrNewError):
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"""The path %(path)s is not permitted on this platform"""
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def __init__(self, path):
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BzrNewError.__init__(self)
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class TestamentMismatch(BzrNewError):
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"""Testament did not match expected value.
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For revision_id {%(revision_id)s}, expected {%(expected)s}, measured
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def __init__(self, revision_id, expected, measured):
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self.revision_id = revision_id
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self.expected = expected
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self.measured = measured
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class NotABundle(BzrNewError):
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"""Not a bzr revision-bundle: %(text)r"""
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def __init__(self, text):
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class BadBundle(Exception): pass
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class MalformedHeader(BadBundle): pass
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class MalformedPatches(BadBundle): pass
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class MalformedFooter(BadBundle): pass
added
removed
bzrlib/errors.py
