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15
# along with this program; if not, write to the Free Software
15
16
# 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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Exceptions are caught at a high level to report errors to the user, and
20
might also be caught inside the program. Therefore it needs to be
21
possible to convert them to a meaningful string, and also for them to be
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interrogated by the program.
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Exceptions are defined such that the arguments given to the constructor
25
are stored in the object as properties of the same name. When the
26
object is printed as a string, the doc string of the class is used as
27
a format string with the property dictionary available to it.
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This means that exceptions can used like this:
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... raise NotBranchError(path='/foo/bar')
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... print sys.exc_type
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... print sys.exc_value
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... path = getattr(sys.exc_value, 'path')
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... if path is not None:
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bzrlib.errors.NotBranchError
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Not a branch: /foo/bar
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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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# 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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# python exceptions? A list of values with no names seems less useful
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# TODO: Perhaps convert the exception to a string at the moment it's
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# constructed to make sure it will succeed. But that says nothing about
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# exceptions that are never raised.
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# TODO: Convert all the other error classes here to BzrNewError, and eliminate
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__copyright__ = "Copyright (C) 2005 Canonical Ltd."
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__author__ = "Martin Pool <mbp@canonical.com>"
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######################################################################
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class BzrError(StandardError):
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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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# maybe it should be done at a higher level
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## n = self.__class__.__name__ + ': '
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if len(self.args) == 1:
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return str(self.args[0])
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elif len(self.args) == 2:
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# further explanation or suggestions
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return n + '\n '.join([self.args[0]] + self.args[1])
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return n + "%r" % self
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return n + `self.args`
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class BzrNewError(BzrError):
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# base classes should override the docstring with their human-
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# readable explanation
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def __init__(self, **kwds):
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for key, value in kwds.items():
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setattr(self, key, value)
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return self.__doc__ % self.__dict__
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except (NameError, ValueError, KeyError), e:
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return 'Unprintable exception %s: %s' \
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% (self.__class__.__name__, str(e))
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class BzrCheckError(BzrNewError):
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"""Internal check failed: %(message)s"""
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def __init__(self, message):
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BzrNewError.__init__(self)
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self.message = message
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class InvalidEntryName(BzrNewError):
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"""Invalid entry name: %(name)s"""
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def __init__(self, name):
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BzrNewError.__init__(self)
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class InvalidRevisionNumber(BzrNewError):
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"""Invalid revision number %(revno)d"""
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class BzrCheckError(BzrError):
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class InvalidRevisionNumber(BzrError):
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def __init__(self, revno):
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BzrNewError.__init__(self)
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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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BzrNewError.__init__(self)
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self.revision_id = revision_id
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class NoWorkingTree(BzrNewError):
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"""No WorkingTree exists for %s(base)."""
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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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def __init__(self, url):
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BzrNewError.__init__(self)
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return 'invalid revision number: %r' % self.args[0]
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class InvalidRevisionId(BzrError):
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44
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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# 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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class BzrOptionError(BzrCommandError):
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"""Some missing or otherwise incorrect option was supplied."""
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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 PathError(BzrNewError):
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"""Generic path error: %(path)r%(extra)s)"""
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def __init__(self, path, extra=None):
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BzrNewError.__init__(self)
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self.extra = ': ' + str(extra)
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class NoSuchFile(PathError):
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"""No such file: %(path)r%(extra)s"""
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class FileExists(PathError):
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"""File exists: %(path)r%(extra)s"""
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class PermissionDenied(PathError):
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"""Permission denied: %(path)r%(extra)s"""
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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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def __init__(self, path, base, extra=None):
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BzrNewError.__init__(self)
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self.extra = ': ' + str(extra)
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class NotBranchError(BzrNewError):
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"""Not a branch: %(path)s"""
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def __init__(self, path):
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BzrNewError.__init__(self)
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class NoRepositoryPresent(BzrNewError):
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"""Not 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 FileInWrongBranch(BzrNewError):
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"""File %(path)s in not in branch %(branch_base)s."""
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def __init__(self, branch, path):
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BzrNewError.__init__(self)
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self.branch_base = branch.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 IncompatibleFormat(BzrNewError):
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"""Format %(format)s is not compatible with .bzr version %(bzrdir)s."""
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def __init__(self, format, bzrdir_format):
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BzrNewError.__init__(self)
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self.bzrdir = bzrdir_format
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class NotVersionedError(BzrNewError):
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"""%(path)s is not versioned"""
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def __init__(self, path):
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BzrNewError.__init__(self)
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class NotBranchError(BzrError):
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"""Specified path is not in a branch"""
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class NotVersionedError(BzrError):
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"""Specified object is not versioned."""
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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 LockError(Exception):
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# All exceptions from the lock/unlock functions should be from
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# this exception class. They will be translated as necessary. The
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# original exception is available as e.original_error
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class CommitNotPossible(LockError):
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"""A commit was attempted but we do not have a write lock open."""
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class AlreadyCommitted(LockError):
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"""A rollback was requested, but is not able to be accomplished."""
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class ReadOnlyError(LockError):
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"""A write attempt was made in a read only transaction."""
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class PointlessCommit(BzrNewError):
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"""No changes to commit"""
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class UpgradeReadonly(BzrNewError):
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"""Upgrade URL cannot work with readonly URL's."""
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class StrictCommitFailed(Exception):
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"""Commit refused because there are unknowns in the tree."""
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"""All exceptions from the lock/unlock functions should be from
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this exception class. They will be translated as necessary. The
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original exception is available as e.original_error
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def __init__(self, e=None):
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self.original_error = e
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Exception.__init__(self, e)
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Exception.__init__(self)
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class PointlessCommit(Exception):
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"""Commit failed because nothing was changed."""
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class NoSuchRevision(BzrError):
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BzrError.__init__(self, msg)
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class HistoryMissing(BzrError):
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def __init__(self, branch, object_type, object_id):
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BzrError.__init__(self,
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'%s is missing %s {%s}'
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% (branch, object_type, object_id))
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class DivergedBranches(BzrError):
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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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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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class NoCommonRoot(BzrError):
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def __init__(self, revision_a, revision_b):
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msg = "Revisions are not derived from the same root: %s %s." \
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% (revision_a, revision_b)
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BzrError.__init__(self, msg)
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class NotAncestor(BzrError):
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def __init__(self, rev_id, not_ancestor_id):
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msg = "Revision %s is not an ancestor of %s" % (not_ancestor_id,
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BzrError.__init__(self, msg)
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self.not_ancestor_id = not_ancestor_id
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class InstallFailed(BzrError):
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def __init__(self, revisions):
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msg = "Could not install revisions:\n%s" % " ,".join(revisions)
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BzrError.__init__(self, msg)
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self.revisions = revisions
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class AmbiguousBase(BzrError):
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def __init__(self, bases):
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msg = "The correct base is unclear, becase %s are all equally close" %\
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BzrError.__init__(self, msg)
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class NoCommits(BzrError):
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def __init__(self, branch):
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msg = "Branch %s has no commits." % branch
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BzrError.__init__(self, msg)
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class UnlistableStore(BzrError):
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def __init__(self, store):
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BzrError.__init__(self, "Store %s is not listable" % store)
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class UnlistableBranch(BzrError):
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def __init__(self, br):
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BzrError.__init__(self, "Stores for branch %s are not listable" % br)
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class WeaveError(BzrNewError):
380
"""Error in processing weave: %(message)s"""
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def __init__(self, message=None):
382
BzrNewError.__init__(self)
383
self.message = message
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class WeaveRevisionAlreadyPresent(WeaveError):
387
"""Revision {%(revision_id)s} already present in %(weave)s"""
388
def __init__(self, revision_id, weave):
389
WeaveError.__init__(self)
390
self.revision_id = revision_id
394
class WeaveRevisionNotPresent(WeaveError):
395
"""Revision {%(revision_id)s} not present in %(weave)s"""
396
def __init__(self, revision_id, weave):
397
WeaveError.__init__(self)
398
self.revision_id = revision_id
402
class WeaveFormatError(WeaveError):
403
"""Weave invariant violated: %(what)s"""
404
def __init__(self, what):
405
WeaveError.__init__(self)
409
class WeaveParentMismatch(WeaveError):
410
"""Parents are mismatched between two revisions."""
413
class WeaveInvalidChecksum(WeaveError):
414
"""Text did not match it's checksum: %(message)s"""
417
class WeaveTextDiffers(WeaveError):
418
"""Weaves differ on text content. Revision: {%(revision_id)s}, %(weave_a)s, %(weave_b)s"""
420
def __init__(self, revision_id, weave_a, weave_b):
421
WeaveError.__init__(self)
422
self.revision_id = revision_id
423
self.weave_a = weave_a
424
self.weave_b = weave_b
427
class NoSuchExportFormat(BzrNewError):
428
"""Export format %(format)r not supported"""
429
def __init__(self, format):
430
BzrNewError.__init__(self)
434
class TransportError(BzrError):
435
"""All errors thrown by Transport implementations should derive
438
def __init__(self, msg=None, orig_error=None):
439
if msg is None and orig_error is not None:
440
msg = str(orig_error)
441
BzrError.__init__(self, msg)
443
self.orig_error = orig_error
445
# A set of semi-meaningful errors which can be thrown
446
class TransportNotPossible(TransportError):
447
"""This is for transports where a specific function is explicitly not
448
possible. Such as pushing files to an HTTP server.
453
class ConnectionError(TransportError):
454
"""A connection problem prevents file retrieval.
455
This does not indicate whether the file exists or not; it indicates that a
456
precondition for requesting the file was not met.
458
def __init__(self, msg=None, orig_error=None):
459
TransportError.__init__(self, msg=msg, orig_error=orig_error)
462
class ConnectionReset(TransportError):
463
"""The connection has been closed."""
466
class ConflictsInTree(BzrError):
468
BzrError.__init__(self, "Working tree has conflicts.")
470
class ParseConfigError(BzrError):
471
def __init__(self, errors, filename):
474
message = "Error(s) parsing config file %s:\n%s" % \
475
(filename, ('\n'.join(e.message for e in errors)))
476
BzrError.__init__(self, message)
478
class SigningFailed(BzrError):
479
def __init__(self, command_line):
480
BzrError.__init__(self, "Failed to gpg sign data with command '%s'"
483
class WorkingTreeNotRevision(BzrError):
484
def __init__(self, tree):
485
BzrError.__init__(self, "The working tree for %s has changed since"
486
" last commit, but weave merge requires that it be"
487
" unchanged." % tree.basedir)
489
class CantReprocessAndShowBase(BzrNewError):
490
"""Can't reprocess and show base.
491
Reprocessing obscures relationship of conflicting lines to base."""
493
class GraphCycleError(BzrNewError):
494
"""Cycle in graph %(graph)r"""
495
def __init__(self, graph):
496
BzrNewError.__init__(self)
500
class NotConflicted(BzrNewError):
501
"""File %(filename)s is not conflicted."""
503
def __init__(self, filename):
504
BzrNewError.__init__(self)
505
self.filename = filename
508
class MustUseDecorated(Exception):
509
"""A decorating function has requested its original command be used.
511
This should never escape bzr, so does not need to be printable.
515
class MissingText(BzrNewError):
516
"""Branch %(base)s is missing revision %(text_revision)s of %(file_id)s"""
518
def __init__(self, branch, text_revision, file_id):
519
BzrNewError.__init__(self)
521
self.base = branch.base
522
self.text_revision = text_revision
523
self.file_id = file_id
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class BzrBadParameter(BzrNewError):
527
"""A bad parameter : %(param)s is not usable.
529
This exception should never be thrown, but it is a base class for all
530
parameter-to-function errors.
532
def __init__(self, param):
533
BzrNewError.__init__(self)
537
class BzrBadParameterNotUnicode(BzrBadParameter):
538
"""Parameter %(param)s is neither unicode nor utf8."""
541
class BzrBadParameterNotString(BzrBadParameter):
542
"""Parameter %(param)s is not a string or unicode string."""
545
class BzrBadParameterMissing(BzrBadParameter):
546
"""Parameter $(param)s is required but not present."""
549
class DependencyNotPresent(BzrNewError):
550
"""Unable to import library: %(library)s, %(error)s"""
552
def __init__(self, library, error):
553
BzrNewError.__init__(self, library=library, error=error)
556
class ParamikoNotPresent(DependencyNotPresent):
557
"""Unable to import paramiko (required for sftp support): %(error)s"""
559
def __init__(self, error):
560
DependencyNotPresent.__init__(self, 'paramiko', error)
563
class UninitializableFormat(BzrNewError):
564
"""Format %(format)s cannot be initialised by this version of bzr."""
566
def __init__(self, format):
567
BzrNewError.__init__(self)
571
class OutOfDateTree(BzrNewError):
572
"""Working tree is out of date, please run 'bzr update'."""
574
def __init__(self, tree):
575
BzrNewError.__init__(self)
added
removed
bzrlib/errors.py
