mercurial/error.py

doc: use reStructuredText for man and HTML pages

The Makefile now requires the rst2html and rst2man programs. Both can
be found in Debian testing or downloaded from the Docutils homepage:

  http://docutils.sf.net/
  http://docutils.sf.net/sandbox/manpage-writer/

The new HTML and man pages no longer contain huge amounts of
un-wrapping literal blocks, thanks to how snippets of reStructuredText
can easily be included inside other reStructuredText documents.

The HTML pages now have anchors for all sections, including the help
topics in hgrc.1 which were missing from the old HTML pages.

# error.py - Mercurial exceptions
#
# Copyright 2005-2008 Matt Mackall <[e-mail]>
#
# This software may be used and distributed according to the terms of the
# GNU General Public License version 2, incorporated herein by reference.

"""Mercurial exceptions.

This allows us to catch exceptions at higher levels without forcing
imports.
"""

# Do not import anything here, please

class RevlogError(Exception):
    pass

class LookupError(RevlogError, KeyError):
    def __init__(self, name, index, message):
        self.name = name
        if isinstance(name, str) and len(name) == 20:
            from node import short
            name = short(name)
        RevlogError.__init__(self, '%s@%s: %s' % (index, name, message))

    def __str__(self):
        return RevlogError.__str__(self)

class ParseError(Exception):
    """Exception raised on errors in parsing the command line."""

class ConfigError(Exception):
    'Exception raised when parsing config files'

class RepoError(Exception):
    pass

class CapabilityError(RepoError):
    pass

class LockError(IOError):
    def __init__(self, errno, strerror, filename, desc):
        IOError.__init__(self, errno, strerror, filename)
        self.desc = desc

class LockHeld(LockError):
    def __init__(self, errno, filename, desc, locker):
        LockError.__init__(self, errno, 'Lock held', filename, desc)
        self.locker = locker

class LockUnavailable(LockError):
    pass

class ResponseError(Exception):
    """Raised to print an error with part of output and exit."""

class UnknownCommand(Exception):
    """Exception raised if command is not in the command table."""

class AmbiguousCommand(Exception):
    """Exception raised if command shortcut matches more than one command."""

# derived from KeyboardInterrupt to simplify some breakout code
class SignalInterrupt(KeyboardInterrupt):
    """Exception raised on SIGTERM and SIGHUP."""

class SignatureError(Exception):
    pass

class Abort(Exception):
    """Raised if a command needs to print an error and exit."""