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# Copyright (C) 2005-2011 Canonical Ltd
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# Copyright (C) 2004, 2005 by Canonical Ltd
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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., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
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# Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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# TODO: probably should say which arguments are candidates for glob
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# expansion on windows and do that at the command level.
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# TODO: Help messages for options.
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# TODO: Define arguments by objects, rather than just using names.
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# Those objects can specify the expected type of the argument, which
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# would help with validation and shell completion. They could also provide
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# help/explanation for that argument in a structured way.
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# TODO: Specific "examples" property on commands for consistent formatting.
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# would help with validation and shell completion.
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# TODO: "--profile=cum", to change sort order. Is there any value in leaving
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# the profile output behind so it can be interactively examined?
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from bzrlib.lazy_import import lazy_import
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lazy_import(globals(), """
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from warnings import warn
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from inspect import getdoc
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from bzrlib.hooks import Hooks
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from bzrlib.i18n import gettext
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# Compatibility - Option used to be in commands.
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from bzrlib.option import Option
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from bzrlib.plugin import disable_plugins, load_plugins
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from bzrlib import registry
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from bzrlib.symbol_versioning import (
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class CommandInfo(object):
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"""Information about a command."""
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def __init__(self, aliases):
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"""The list of aliases for the command."""
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self.aliases = aliases
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def from_command(klass, command):
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"""Factory to construct a CommandInfo from a command."""
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return klass(command.aliases)
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class CommandRegistry(registry.Registry):
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"""Special registry mapping command names to command classes.
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:ivar overridden_registry: Look in this registry for commands being
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overridden by this registry. This can be used to tell plugin commands
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about the builtin they're decorating.
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registry.Registry.__init__(self)
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self.overridden_registry = None
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# map from aliases to the real command that implements the name
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def get(self, command_name):
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real_name = self._alias_dict.get(command_name, command_name)
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return registry.Registry.get(self, real_name)
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def _get_name(command_name):
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if command_name.startswith("cmd_"):
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return _unsquish_command_name(command_name)
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def register(self, cmd, decorate=False):
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"""Utility function to help register a command
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:param cmd: Command subclass to register
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:param decorate: If true, allow overriding an existing command
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of the same name; the old command is returned by this function.
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Otherwise it is an error to try to override an existing command.
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k_unsquished = self._get_name(k)
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previous = self.get(k_unsquished)
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if self.overridden_registry:
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previous = self.overridden_registry.get(k_unsquished)
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info = CommandInfo.from_command(cmd)
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registry.Registry.register(self, k_unsquished, cmd,
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override_existing=decorate, info=info)
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trace.warning('Two plugins defined the same command: %r' % k)
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trace.warning('Not loading the one in %r' %
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sys.modules[cmd.__module__])
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trace.warning('Previously this command was registered from %r' %
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sys.modules[previous.__module__])
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for a in cmd.aliases:
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self._alias_dict[a] = k_unsquished
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def register_lazy(self, command_name, aliases, module_name):
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"""Register a command without loading its module.
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:param command_name: The primary name of the command.
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:param aliases: A list of aliases for the command.
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:module_name: The module that the command lives in.
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key = self._get_name(command_name)
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registry.Registry.register_lazy(self, key, module_name, command_name,
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info=CommandInfo(aliases))
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self._alias_dict[a] = key
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plugin_cmds = CommandRegistry()
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builtin_command_registry = CommandRegistry()
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plugin_cmds.overridden_registry = builtin_command_registry
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def register_command(cmd, decorate=False):
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"""Register a plugin command.
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Should generally be avoided in favor of lazy registration.
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from bzrlib.trace import mutter, note, log_error, warning
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from bzrlib.errors import BzrError, BzrCheckError, BzrCommandError, NotBranchError
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from bzrlib.revisionspec import RevisionSpec
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from bzrlib import BZRDIR
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def register_command(cmd):
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"Utility function to help register a command"
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global plugin_cmds
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return plugin_cmds.register(cmd, decorate)
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if k.startswith("cmd_"):
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k_unsquished = _unsquish_command_name(k)
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if not plugin_cmds.has_key(k_unsquished):
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plugin_cmds[k_unsquished] = cmd
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mutter('registered plugin command %s', k_unsquished)
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log_error('Two plugins defined the same command: %r' % k)
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log_error('Not loading the one in %r' % sys.modules[cmd.__module__])
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def _squish_command_name(cmd):
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def _unsquish_command_name(cmd):
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assert cmd.startswith("cmd_")
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return cmd[4:].replace('_','-')
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def _register_builtin_commands():
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if builtin_command_registry.keys():
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def _parse_revision_str(revstr):
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"""This handles a revision string -> revno.
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This always returns a list. The list will have one element for
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each revision specifier supplied.
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>>> _parse_revision_str('234')
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[<RevisionSpec_int 234>]
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>>> _parse_revision_str('234..567')
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[<RevisionSpec_int 234>, <RevisionSpec_int 567>]
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>>> _parse_revision_str('..')
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[<RevisionSpec None>, <RevisionSpec None>]
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>>> _parse_revision_str('..234')
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[<RevisionSpec None>, <RevisionSpec_int 234>]
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>>> _parse_revision_str('234..')
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[<RevisionSpec_int 234>, <RevisionSpec None>]
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>>> _parse_revision_str('234..456..789') # Maybe this should be an error
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[<RevisionSpec_int 234>, <RevisionSpec_int 456>, <RevisionSpec_int 789>]
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>>> _parse_revision_str('234....789') #Error ?
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[<RevisionSpec_int 234>, <RevisionSpec None>, <RevisionSpec_int 789>]
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>>> _parse_revision_str('revid:test@other.com-234234')
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[<RevisionSpec_revid revid:test@other.com-234234>]
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>>> _parse_revision_str('revid:test@other.com-234234..revid:test@other.com-234235')
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[<RevisionSpec_revid revid:test@other.com-234234>, <RevisionSpec_revid revid:test@other.com-234235>]
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>>> _parse_revision_str('revid:test@other.com-234234..23')
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[<RevisionSpec_revid revid:test@other.com-234234>, <RevisionSpec_int 23>]
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>>> _parse_revision_str('date:2005-04-12')
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[<RevisionSpec_date date:2005-04-12>]
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>>> _parse_revision_str('date:2005-04-12 12:24:33')
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[<RevisionSpec_date date:2005-04-12 12:24:33>]
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>>> _parse_revision_str('date:2005-04-12T12:24:33')
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[<RevisionSpec_date date:2005-04-12T12:24:33>]
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>>> _parse_revision_str('date:2005-04-12,12:24:33')
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[<RevisionSpec_date date:2005-04-12,12:24:33>]
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>>> _parse_revision_str('-5..23')
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[<RevisionSpec_int -5>, <RevisionSpec_int 23>]
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>>> _parse_revision_str('-5')
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[<RevisionSpec_int -5>]
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>>> _parse_revision_str('123a')
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Traceback (most recent call last):
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BzrError: No namespace registered for string: '123a'
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>>> _parse_revision_str('abc')
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Traceback (most recent call last):
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BzrError: No namespace registered for string: 'abc'
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>>> _parse_revision_str('branch:../branch2')
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[<RevisionSpec_branch branch:../branch2>]
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old_format_re = re.compile('\d*:\d*')
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m = old_format_re.match(revstr)
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warning('Colon separator for revision numbers is deprecated.'
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for rev in revstr.split(':'):
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revs.append(RevisionSpec(int(rev)))
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revs.append(RevisionSpec(None))
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for x in revstr.split('..'):
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revs.append(RevisionSpec(None))
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# looks like a namespace:.. has happened
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next_prefix = x + '..'
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if next_prefix is not None:
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revs.append(RevisionSpec(x))
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if next_prefix is not None:
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revs.append(RevisionSpec(next_prefix))
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def _builtin_commands():
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import bzrlib.builtins
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for cmd_class in _scan_module_for_commands(bzrlib.builtins).values():
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builtin_command_registry.register(cmd_class)
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bzrlib.builtins._register_lazy_builtins()
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def _scan_module_for_commands(module):
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for name, obj in module.__dict__.iteritems():
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builtins = bzrlib.builtins.__dict__
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for name in builtins:
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if name.startswith("cmd_"):
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real_name = _unsquish_command_name(name)
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real_name = _unsquish_command_name(name)
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r[real_name] = builtins[name]
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def _list_bzr_commands(names):
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"""Find commands from bzr's core and plugins.
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This is not the public interface, just the default hook called by all_command_names.
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# to eliminate duplicates
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names.update(builtin_command_names())
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names.update(plugin_command_names())
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def all_command_names():
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"""Return a set of all command names."""
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for hook in Command.hooks['list_commands']:
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raise AssertionError(
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'hook %s returned None' % Command.hooks.get_hook_name(hook))
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def builtin_command_names():
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"""Return list of builtin command names.
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"""Return list of builtin command names."""
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return _builtin_commands().keys()
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Use of all_command_names() is encouraged rather than builtin_command_names
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and/or plugin_command_names.
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_register_builtin_commands()
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return builtin_command_registry.keys()
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def plugin_command_names():
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"""Returns command names from commands registered by plugins."""
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return plugin_cmds.keys()
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def _get_cmd_dict(plugins_override=True):
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"""Return name->class mapping for all commands."""
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d = _builtin_commands()
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d.update(plugin_cmds)
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def get_all_cmds(plugins_override=True):
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"""Return canonical name and class for all registered commands."""
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for k, v in _get_cmd_dict(plugins_override=plugins_override).iteritems():
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def get_cmd_object(cmd_name, plugins_override=True):
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"""Return the command object for a command.
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"""Return the canonical name and command class for a command.
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If true, plugin commands can override builtins.
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return _get_cmd_object(cmd_name, plugins_override)
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raise errors.BzrCommandError('unknown command "%s"' % cmd_name)
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def _get_cmd_object(cmd_name, plugins_override=True, check_missing=True):
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"""Get a command object.
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:param cmd_name: The name of the command.
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:param plugins_override: Allow plugins to override builtins.
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:param check_missing: Look up commands not found in the regular index via
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the get_missing_command hook.
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:return: A Command object instance
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:raises KeyError: If no command is found.
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# We want only 'ascii' command names, but the user may have typed
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# in a Unicode name. In that case, they should just get a
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# 'command not found' error later.
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# In the future, we may actually support Unicode command names.
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for hook in Command.hooks['get_command']:
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cmd = hook(cmd, cmd_name)
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if cmd is not None and not plugins_override and not cmd.plugin_name():
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# We've found a non-plugin command, don't permit it to be
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if cmd is None and check_missing:
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for hook in Command.hooks['get_missing_command']:
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# Allow plugins to extend commands
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for hook in Command.hooks['extend_command']:
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if getattr(cmd, 'invoked_as', None) is None:
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cmd.invoked_as = cmd_name
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def _try_plugin_provider(cmd_name):
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"""Probe for a plugin provider having cmd_name."""
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plugin_metadata, provider = probe_for_provider(cmd_name)
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raise errors.CommandAvailableInPlugin(cmd_name,
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plugin_metadata, provider)
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except errors.NoPluginAvailable:
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def probe_for_provider(cmd_name):
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"""Look for a provider for cmd_name.
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:param cmd_name: The command name.
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:return: plugin_metadata, provider for getting cmd_name.
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:raises NoPluginAvailable: When no provider can supply the plugin.
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# look for providers that provide this command but aren't installed
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for provider in command_providers_registry:
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return provider.plugin_for_command(cmd_name), provider
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except errors.NoPluginAvailable:
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raise errors.NoPluginAvailable(cmd_name)
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def _get_bzr_command(cmd_or_None, cmd_name):
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"""Get a command from bzr's core."""
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cmd_class = builtin_command_registry.get(cmd_name)
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def _get_external_command(cmd_or_None, cmd_name):
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"""Lookup a command that is a shell script."""
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# Only do external command lookups when no command is found so far.
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if cmd_or_None is not None:
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from bzrlib.externalcommand import ExternalCommand
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cmd_name = str(cmd_name) # not unicode
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# first look up this command under the specified name
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cmds = _get_cmd_dict(plugins_override=plugins_override)
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return cmds[cmd_name]()
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# look for any command which claims this as an alias
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for real_cmd_name, cmd_class in cmds.iteritems():
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if cmd_name in cmd_class.aliases:
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cmd_obj = ExternalCommand.find_command(cmd_name)
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def _get_plugin_command(cmd_or_None, cmd_name):
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"""Get a command from bzr's plugins."""
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return plugin_cmds.get(cmd_name)()
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for key in plugin_cmds.keys():
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info = plugin_cmds.get_info(key)
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if cmd_name in info.aliases:
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return plugin_cmds.get(key)()
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raise BzrCommandError("unknown command %r" % cmd_name)
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class Command(object):
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summary, then a complete description of the command. A grammar
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description will be inserted.
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:cvar aliases: Other accepted names for this command.
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:cvar takes_args: List of argument forms, marked with whether they are
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optional, repeated, etc. Examples::
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['to_location', 'from_branch?', 'file*']
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* 'to_location' is required
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* 'from_branch' is optional
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* 'file' can be specified 0 or more times
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:cvar takes_options: List of options that may be given for this command.
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These can be either strings, referring to globally-defined options, or
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option objects. Retrieve through options().
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:cvar hidden: If true, this command isn't advertised. This is typically
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Other accepted names for this command.
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List of argument forms, marked with whether they are optional,
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List of options that may be given for this command.
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If true, this command isn't advertised. This is typically
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for commands intended for expert users.
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:cvar encoding_type: Command objects will get a 'outf' attribute, which has
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been setup to properly handle encoding of unicode strings.
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encoding_type determines what will happen when characters cannot be
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* strict - abort if we cannot decode
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* replace - put in a bogus character (typically '?')
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* exact - do not encode sys.stdout
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NOTE: by default on Windows, sys.stdout is opened as a text stream,
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therefore LF line-endings are converted to CRLF. When a command uses
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encoding_type = 'exact', then sys.stdout is forced to be a binary
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stream, and line-endings will not mangled.
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A string indicating the real name under which this command was
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invoked, before expansion of aliases.
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(This may be None if the command was constructed and run in-process.)
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:cvar hooks: An instance of CommandHooks.
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:cvar __doc__: The help shown by 'bzr help command' for this command.
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This is set by assigning explicitly to __doc__ so that -OO can
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__doc__ = "My help goes here"
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takes_options = []
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encoding_type = 'strict'
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def __init__(self):
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"""Construct an instance of this command."""
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# List of standard options directly supported
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self.supported_std_options = []
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def add_cleanup(self, cleanup_func, *args, **kwargs):
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"""Register a function to call after self.run returns or raises.
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Functions will be called in LIFO order.
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self._operation.add_cleanup(cleanup_func, *args, **kwargs)
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def cleanup_now(self):
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"""Execute and empty pending cleanup functions immediately.
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After cleanup_now all registered cleanups are forgotten. add_cleanup
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may be called again after cleanup_now; these cleanups will be called
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after self.run returns or raises (or when cleanup_now is next called).
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This is useful for releasing expensive or contentious resources (such
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as write locks) before doing further work that does not require those
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resources (such as writing results to self.outf). Note though, that
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as it releases all resources, this may release locks that the command
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wants to hold, so use should be done with care.
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self._operation.cleanup_now()
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"""Return single-line grammar for this command.
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Only describes arguments, not options.
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s = 'bzr ' + self.name() + ' '
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for aname in self.takes_args:
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aname = aname.upper()
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if aname[-1] in ['$', '+']:
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aname = aname[:-1] + '...'
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elif aname[-1] == '?':
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aname = '[' + aname[:-1] + ']'
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elif aname[-1] == '*':
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aname = '[' + aname[:-1] + '...]'
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s = s[:-1] # remove last space
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def get_help_text(self, additional_see_also=None, plain=True,
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see_also_as_links=False, verbose=True):
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"""Return a text string with help for this command.
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:param additional_see_also: Additional help topics to be
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:param plain: if False, raw help (reStructuredText) is
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returned instead of plain text.
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:param see_also_as_links: if True, convert items in 'See also'
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list to internal links (used by bzr_man rstx generator)
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:param verbose: if True, display the full help, otherwise
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leave out the descriptive sections and just display
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usage help (e.g. Purpose, Usage, Options) with a
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message explaining how to obtain full help.
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if self.l10n and not i18n.installed():
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i18n.install() # Install i18n only for get_help_text for now.
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# Note: If self.gettext() translates ':Usage:\n', the section will
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# be shown after "Description" section and we don't want to
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# translate the usage string.
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# Though, bzr export-pot don't exports :Usage: section and it must
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doc = self.gettext(doc)
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doc = gettext("No help for this command.")
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# Extract the summary (purpose) and sections out from the text
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purpose,sections,order = self._get_help_parts(doc)
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# If a custom usage section was provided, use it
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if sections.has_key('Usage'):
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usage = sections.pop('Usage')
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usage = self._usage()
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# The header is the purpose and usage
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result += gettext(':Purpose: %s\n') % (purpose,)
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if usage.find('\n') >= 0:
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result += gettext(':Usage:\n%s\n') % (usage,)
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result += gettext(':Usage: %s\n') % (usage,)
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# XXX: optparse implicitly rewraps the help, and not always perfectly,
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# so we get <https://bugs.launchpad.net/bzr/+bug/249908>. -- mbp
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parser = option.get_optparser(self.options())
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options = parser.format_option_help()
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# FIXME: According to the spec, ReST option lists actually don't
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# support options like --1.14 so that causes syntax errors (in Sphinx
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# at least). As that pattern always appears in the commands that
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# break, we trap on that and then format that block of 'format' options
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# as a literal block. We use the most recent format still listed so we
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# don't have to do that too often -- vila 20110514
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if not plain and options.find(' --1.14 ') != -1:
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options = options.replace(' format:\n', ' format::\n\n', 1)
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if options.startswith('Options:'):
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result += gettext(':Options:%s') % (options[len('options:'):],)
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# Add the description, indenting it 2 spaces
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# to match the indentation of the options
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if sections.has_key(None):
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text = sections.pop(None)
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text = '\n '.join(text.splitlines())
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result += gettext(':Description:\n %s\n\n') % (text,)
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# Add the custom sections (e.g. Examples). Note that there's no need
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# to indent these as they must be indented already in the source.
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if label in sections:
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result += ':%s:\n%s\n' % (label, sections[label])
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result += (gettext("See bzr help %s for more details and examples.\n\n")
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# Add the aliases, source (plug-in) and see also links, if any
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result += gettext(':Aliases: ')
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result += ', '.join(self.aliases) + '\n'
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plugin_name = self.plugin_name()
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if plugin_name is not None:
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result += gettext(':From: plugin "%s"\n') % plugin_name
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see_also = self.get_see_also(additional_see_also)
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if not plain and see_also_as_links:
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for item in see_also:
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# topics doesn't have an independent section
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# so don't create a real link
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see_also_links.append(item)
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# Use a Sphinx link for this entry
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link_text = gettext(":doc:`%s <%s-help>`") % (item, item)
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see_also_links.append(link_text)
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see_also = see_also_links
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result += gettext(':See also: %s') % ', '.join(see_also) + '\n'
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# If this will be rendered as plain text, convert it
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import bzrlib.help_topics
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result = bzrlib.help_topics.help_as_plain_text(result)
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def _get_help_parts(text):
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"""Split help text into a summary and named sections.
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:return: (summary,sections,order) where summary is the top line and
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sections is a dictionary of the rest indexed by section name.
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order is the order the section appear in the text.
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A section starts with a heading line of the form ":xxx:".
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Indented text on following lines is the section value.
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All text found outside a named section is assigned to the
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default section which is given the key of None.
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def save_section(sections, order, label, section):
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if sections.has_key(label):
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sections[label] += '\n' + section
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sections[label] = section
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lines = text.rstrip().splitlines()
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summary = lines.pop(0)
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label,section = None,''
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if line.startswith(':') and line.endswith(':') and len(line) > 2:
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save_section(sections, order, label, section)
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label,section = line[1:-1],''
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elif (label is not None) and len(line) > 1 and not line[0].isspace():
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save_section(sections, order, label, section)
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label,section = None,line
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section += '\n' + line
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save_section(sections, order, label, section)
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return summary, sections, order
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def get_help_topic(self):
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"""Return the commands help topic - its name."""
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def get_see_also(self, additional_terms=None):
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"""Return a list of help topics that are related to this command.
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The list is derived from the content of the _see_also attribute. Any
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duplicates are removed and the result is in lexical order.
617
:param additional_terms: Additional help topics to cross-reference.
618
:return: A list of help topics.
620
see_also = set(getattr(self, '_see_also', []))
622
see_also.update(additional_terms)
623
return sorted(see_also)
626
"""Return dict of valid options for this command.
628
Maps from long option name to option object."""
629
r = Option.STD_OPTIONS.copy()
631
for o in self.takes_options:
632
if isinstance(o, basestring):
633
o = option.Option.OPTIONS[o]
635
if o.name in std_names:
636
self.supported_std_options.append(o.name)
639
def _setup_outf(self):
640
"""Return a file linked to stdout, which has proper encoding."""
641
self.outf = ui.ui_factory.make_output_stream(
642
encoding_type=self.encoding_type)
644
def run_argv_aliases(self, argv, alias_argv=None):
645
"""Parse the command line and run with extra aliases in alias_argv."""
646
args, opts = parse_args(self, argv, alias_argv)
649
# Process the standard options
254
if self.__doc__ == Command.__doc__:
255
warn("No help message set for %r" % self)
258
def run_argv(self, argv):
259
"""Parse command line and run."""
260
args, opts = parse_args(argv)
650
262
if 'help' in opts: # e.g. bzr add --help
651
self.outf.write(self.get_help_text())
653
if 'usage' in opts: # e.g. bzr add --usage
654
self.outf.write(self.get_help_text(verbose=False))
656
trace.set_verbosity_level(option._verbosity_level)
657
if 'verbose' in self.supported_std_options:
658
opts['verbose'] = trace.is_verbose()
659
elif opts.has_key('verbose'):
661
if 'quiet' in self.supported_std_options:
662
opts['quiet'] = trace.is_quiet()
663
elif opts.has_key('quiet'):
263
from bzrlib.help import help_on_command
264
help_on_command(self.name())
267
# check options are reasonable
268
allowed = self.takes_options
270
if oname not in allowed:
271
raise BzrCommandError("option '--%s' is not allowed for command %r"
272
% (oname, self.name()))
666
274
# mix arguments and options into one dictionary
667
275
cmdargs = _match_argform(self.name(), self.takes_args, args)
709
292
Return 0 or None if the command was successful, or a non-zero
710
293
shell error code if not. It's OK for this method to allow
711
294
an exception to raise up.
713
This method is automatically wrapped by Command.__init__ with a
714
cleanup operation, stored as self._operation. This can be used
715
via self.add_cleanup to perform automatic cleanups at the end of
718
The argument for run are assembled by introspection. So for instance,
719
if your command takes an argument files, you would declare::
721
def run(self, files=None):
724
raise NotImplementedError('no implementation of command %r'
296
raise NotImplementedError()
728
300
"""Return help message for this class."""
729
from inspect import getdoc
730
301
if self.__doc__ is Command.__doc__:
732
303
return getdoc(self)
734
def gettext(self, message):
735
"""Returns the gettext function used to translate this command's help.
737
Commands provided by plugins should override this to use their
740
return i18n.gettext_per_paragraph(message)
743
"""Return the canonical name for this command.
745
The name under which it was actually invoked is available in invoked_as.
747
306
return _unsquish_command_name(self.__class__.__name__)
749
def plugin_name(self):
750
"""Get the name of the plugin that provides this command.
752
:return: The name of the plugin or None if the command is builtin.
754
mod_parts = self.__module__.split('.')
755
if len(mod_parts) >= 3 and mod_parts[1] == 'plugins':
309
def parse_spec(spec):
315
>>> parse_spec("../@")
317
>>> parse_spec("../f/@35")
319
>>> parse_spec('./@revid:john@arbash-meinel.com-20050711044610-3ca0327c6a222f67')
320
['.', 'revid:john@arbash-meinel.com-20050711044610-3ca0327c6a222f67']
325
parsed = spec.split('/@')
326
assert len(parsed) == 2
761
class CommandHooks(Hooks):
762
"""Hooks related to Command object creation/enumeration."""
765
"""Create the default hooks.
767
These are all empty initially, because by default nothing should get
770
Hooks.__init__(self, "bzrlib.commands", "Command.hooks")
771
self.add_hook('extend_command',
772
"Called after creating a command object to allow modifications "
773
"such as adding or removing options, docs etc. Called with the "
774
"new bzrlib.commands.Command object.", (1, 13))
775
self.add_hook('get_command',
776
"Called when creating a single command. Called with "
777
"(cmd_or_None, command_name). get_command should either return "
778
"the cmd_or_None parameter, or a replacement Command object that "
779
"should be used for the command. Note that the Command.hooks "
780
"hooks are core infrastructure. Many users will prefer to use "
781
"bzrlib.commands.register_command or plugin_cmds.register_lazy.",
783
self.add_hook('get_missing_command',
784
"Called when creating a single command if no command could be "
785
"found. Called with (command_name). get_missing_command should "
786
"either return None, or a Command object to be used for the "
788
self.add_hook('list_commands',
789
"Called when enumerating commands. Called with a set of "
790
"cmd_name strings for all the commands found so far. This set "
791
" is safe to mutate - e.g. to remove a command. "
792
"list_commands should return the updated set of command names.",
795
Command.hooks = CommandHooks()
798
def parse_args(command, argv, alias_argv=None):
331
parsed[1] = int(parsed[1])
333
pass # We can allow stuff like ./@revid:blahblahblah
337
parsed = [spec, None]
341
# list of all available options; the rhs can be either None for an
342
# option that takes no argument, or a constructor function that checks
357
'revision': _parse_revision_str,
384
def parse_args(argv):
799
385
"""Parse command line.
801
387
Arguments and options are parsed at this level before being passed
802
388
down to specific command handlers. This routine knows, from a
803
389
lookup table, something about the available options, what optargs
804
390
they take, and which commands will accept them.
392
>>> parse_args('--help'.split())
394
>>> parse_args('help -- --invalidcmd'.split())
395
(['help', '--invalidcmd'], {})
396
>>> parse_args('--version'.split())
397
([], {'version': True})
398
>>> parse_args('status --all'.split())
399
(['status'], {'all': True})
400
>>> parse_args('commit --message=biter'.split())
401
(['commit'], {'message': u'biter'})
402
>>> parse_args('log -r 500'.split())
403
(['log'], {'revision': [<RevisionSpec_int 500>]})
404
>>> parse_args('log -r500..600'.split())
405
(['log'], {'revision': [<RevisionSpec_int 500>, <RevisionSpec_int 600>]})
406
>>> parse_args('log -vr500..600'.split())
407
(['log'], {'verbose': True, 'revision': [<RevisionSpec_int 500>, <RevisionSpec_int 600>]})
408
>>> parse_args('log -rrevno:500..600'.split()) #the r takes an argument
409
(['log'], {'revision': [<RevisionSpec_revno revno:500>, <RevisionSpec_int 600>]})
806
# TODO: make it a method of the Command?
807
parser = option.get_optparser(command.options())
808
if alias_argv is not None:
809
args = alias_argv + argv
813
# for python 2.5 and later, optparse raises this exception if a non-ascii
814
# option name is given. See http://bugs.python.org/issue2931
816
options, args = parser.parse_args(args)
817
except UnicodeEncodeError,e:
818
raise errors.BzrCommandError('Only ASCII permitted in option names')
820
opts = dict([(k, v) for k, v in options.__dict__.iteritems() if
821
v is not option.OptionParser.DEFAULT_VALUE])
417
if not argsover and a[0] == '-':
418
# option names must not be unicode
423
# We've received a standalone -- No more flags
426
mutter(" got option %r" % a)
428
optname, optarg = a[2:].split('=', 1)
431
if optname not in OPTIONS:
432
raise BzrError('unknown long option %r' % a)
435
if shortopt in SHORT_OPTIONS:
436
# Multi-character options must have a space to delimit
438
optname = SHORT_OPTIONS[shortopt]
440
# Single character short options, can be chained,
441
# and have their value appended to their name
443
if shortopt not in SHORT_OPTIONS:
444
# We didn't find the multi-character name, and we
445
# didn't find the single char name
446
raise BzrError('unknown short option %r' % a)
447
optname = SHORT_OPTIONS[shortopt]
450
# There are extra things on this option
451
# see if it is the value, or if it is another
453
optargfn = OPTIONS[optname]
455
# This option does not take an argument, so the
456
# next entry is another short option, pack it back
458
argv.insert(0, '-' + a[2:])
460
# This option takes an argument, so pack it
465
# XXX: Do we ever want to support this, e.g. for -r?
466
raise BzrError('repeated option %r' % a)
468
optargfn = OPTIONS[optname]
472
raise BzrError('option %r needs an argument' % a)
475
opts[optname] = optargfn(optarg)
478
raise BzrError('option %r takes no argument' % optname)
822
483
return args, opts
825
488
def _match_argform(cmd, takes_args, args):
907
553
os.remove(pfname)
910
def exception_to_return_code(the_callable, *args, **kwargs):
911
"""UI level helper for profiling and coverage.
913
This transforms exceptions into a return value of 3. As such its only
914
relevant to the UI layer, and should never be called where catching
915
exceptions may be desirable.
918
return the_callable(*args, **kwargs)
919
except (KeyboardInterrupt, Exception), e:
920
# used to handle AssertionError and KeyboardInterrupt
921
# specially here, but hopefully they're handled ok by the logger now
922
exc_info = sys.exc_info()
923
exitcode = trace.report_exception(exc_info, sys.stderr)
924
if os.environ.get('BZR_PDB'):
925
print '**** entering debugger'
928
if sys.version_info[:2] < (2, 6):
930
# pdb.post_mortem(tb)
931
# but because pdb.post_mortem gives bad results for tracebacks
932
# from inside generators, we do it manually.
933
# (http://bugs.python.org/issue4150, fixed in Python 2.6)
935
# Setup pdb on the traceback
938
p.setup(tb.tb_frame, tb)
939
# Point the debugger at the deepest frame of the stack
940
p.curindex = len(p.stack) - 1
941
p.curframe = p.stack[p.curindex][0]
942
# Start the pdb prompt.
943
p.print_stack_entry(p.stack[p.curindex])
951
def apply_lsprofiled(filename, the_callable, *args, **kwargs):
952
from bzrlib.lsprof import profile
953
ret, stats = profile(exception_to_return_code, the_callable,
960
trace.note('Profile data written to "%s".', filename)
964
def get_alias(cmd, config=None):
965
"""Return an expanded alias, or None if no alias exists.
968
Command to be checked for an alias.
970
Used to specify an alternative config to use,
971
which is especially useful for testing.
972
If it is unspecified, the global config will be used.
976
config = bzrlib.config.GlobalConfig()
977
alias = config.get_alias(cmd)
979
return cmdline.split(alias)
983
def run_bzr(argv, load_plugins=load_plugins, disable_plugins=disable_plugins):
984
557
"""Execute a command.
986
:param argv: The command-line arguments, without the program name from
987
argv[0] These should already be decoded. All library/test code calling
988
run_bzr should be passing valid strings (don't need decoding).
989
:param load_plugins: What function to call when triggering plugin loading.
990
This function should take no arguments and cause all plugins to be
992
:param disable_plugins: What function to call when disabling plugin
993
loading. This function should take no arguments and cause all plugin
994
loading to be prohibited (so that code paths in your application that
995
know about some plugins possibly being present will fail to import
996
those plugins even if they are installed.)
997
:return: Returns a command exit code or raises an exception.
559
This is similar to main(), but without all the trappings for
560
logging and error handling.
563
The command-line arguments, without the program name from argv[0]
565
Returns a command status or raises an exception.
999
567
Special master options: these must come before the command because
1000
568
they control how the command is interpreted.
1003
571
Do not load plugin modules at all
1006
Do not allow aliases
1009
574
Only use builtin commands. (Plugins are still allowed to change
1010
575
other behaviour.)
1013
Run under the Python hotshot profiler.
1016
Run under the Python lsprof profiler.
1019
Generate line coverage report in the specified directory.
1022
Specify the number of processes that can be run concurrently (selftest).
578
Run under the Python profiler.
1024
trace.mutter("bazaar version: " + bzrlib.__version__)
1025
argv = _specified_or_unicode_argv(argv)
1026
trace.mutter("bzr arguments: %r", argv)
580
# Load all of the transport methods
581
import bzrlib.transport.local, bzrlib.transport.http
583
argv = [a.decode(bzrlib.user_encoding) for a in argv]
1028
opt_lsprof = opt_profile = opt_no_plugins = opt_builtin = \
1029
opt_no_l10n = opt_no_aliases = False
1030
opt_lsprof_file = opt_coverage_dir = None
585
opt_profile = opt_no_plugins = opt_builtin = False
1032
587
# --no-plugins is handled specially at a very early stage. We need
1033
588
# to load plugins before doing other command parsing so that they
1034
589
# can override commands, but this needs to happen first.
1038
while i < len(argv):
1040
592
if a == '--profile':
1041
593
opt_profile = True
1042
elif a == '--lsprof':
1044
elif a == '--lsprof-file':
1046
opt_lsprof_file = argv[i + 1]
1048
594
elif a == '--no-plugins':
1049
595
opt_no_plugins = True
1050
elif a == '--no-aliases':
1051
opt_no_aliases = True
1052
elif a == '--no-l10n':
1054
596
elif a == '--builtin':
1055
597
opt_builtin = True
1056
elif a == '--concurrency':
1057
os.environ['BZR_CONCURRENCY'] = argv[i + 1]
1059
elif a == '--coverage':
1060
opt_coverage_dir = argv[i + 1]
1062
elif a == '--profile-imports':
1063
pass # already handled in startup script Bug #588277
1064
elif a.startswith('-D'):
1065
debug.debug_flags.add(a[2:])
1070
debug.set_debug_flags_from_config()
602
if (not argv) or (argv[0] == '--help'):
603
from bzrlib.help import help
610
if argv[0] == '--version':
611
from bzrlib.builtins import show_version
1072
615
if not opt_no_plugins:
616
from bzrlib.plugin import load_plugins
1079
get_cmd_object('help').run_argv_aliases([])
1082
if argv[0] == '--version':
1083
get_cmd_object('version').run_argv_aliases([])
1088
if not opt_no_aliases:
1089
alias_argv = get_alias(argv[0])
1091
argv[0] = alias_argv.pop(0)
619
cmd = str(argv.pop(0))
1094
621
cmd_obj = get_cmd_object(cmd, plugins_override=not opt_builtin)
1097
run = cmd_obj.run_argv_aliases
1098
run_argv = [argv, alias_argv]
624
ret = apply_profiled(cmd_obj.run_argv, argv)
626
ret = cmd_obj.run_argv(argv)
632
bzrlib.trace.log_startup(argv)
633
bzrlib.ui.ui_factory = bzrlib.ui.TextUIFactory()
635
return run_bzr_catch_errors(argv[1:])
638
def run_bzr_catch_errors(argv):
1101
# We can be called recursively (tests for example), but we don't want
1102
# the verbosity level to propagate.
1103
saved_verbosity_level = option._verbosity_level
1104
option._verbosity_level = 0
1106
if opt_coverage_dir:
1108
'--coverage ignored, because --lsprof is in use.')
1109
ret = apply_lsprofiled(opt_lsprof_file, run, *run_argv)
1111
if opt_coverage_dir:
1113
'--coverage ignored, because --profile is in use.')
1114
ret = apply_profiled(run, *run_argv)
1115
elif opt_coverage_dir:
1116
ret = apply_coveraged(opt_coverage_dir, run, *run_argv)
1118
ret = run(*run_argv)
1121
# reset, in case we may do other commands later within the same
1122
# process. Commands that want to execute sub-commands must propagate
1123
# --verbose in their own way.
1124
if 'memory' in debug.debug_flags:
1125
trace.debug_memory('Process status after command:', short=False)
1126
option._verbosity_level = saved_verbosity_level
1129
def display_command(func):
1130
"""Decorator that suppresses pipe/interrupt errors."""
1131
def ignore_pipe(*args, **kwargs):
1133
result = func(*args, **kwargs)
643
# do this here inside the exception wrappers to catch EPIPE
1134
644
sys.stdout.flush()
1137
if getattr(e, 'errno', None) is None:
1139
if e.errno != errno.EPIPE:
1140
# Win32 raises IOError with errno=0 on a broken pipe
1141
if sys.platform != 'win32' or (e.errno not in (0, errno.EINVAL)):
1144
except KeyboardInterrupt:
1149
def install_bzr_command_hooks():
1150
"""Install the hooks to supply bzr's own commands."""
1151
if _list_bzr_commands in Command.hooks["list_commands"]:
1153
Command.hooks.install_named_hook("list_commands", _list_bzr_commands,
1155
Command.hooks.install_named_hook("get_command", _get_bzr_command,
1157
Command.hooks.install_named_hook("get_command", _get_plugin_command,
1158
"bzr plugin commands")
1159
Command.hooks.install_named_hook("get_command", _get_external_command,
1160
"bzr external command lookup")
1161
Command.hooks.install_named_hook("get_missing_command", _try_plugin_provider,
1162
"bzr plugin-provider-db check")
1166
def _specified_or_unicode_argv(argv):
1167
# For internal or testing use, argv can be passed. Otherwise, get it from
1168
# the process arguments in a unicode-safe way.
1170
return osutils.get_unicode_argv()
1174
# ensure all arguments are unicode strings
1176
if isinstance(a, unicode):
1179
new_argv.append(a.decode('ascii'))
1180
except UnicodeDecodeError:
1181
raise errors.BzrError("argv should be list of unicode strings.")
1185
def main(argv=None):
1186
"""Main entry point of command-line interface.
1188
Typically `bzrlib.initialize` should be called first.
1190
:param argv: list of unicode command-line arguments similar to sys.argv.
1191
argv[0] is script name usually, it will be ignored.
1192
Don't pass here sys.argv because this list contains plain strings
1193
and not unicode; pass None instead.
1195
:return: exit code of bzr command.
1197
if argv is not None:
1199
_register_builtin_commands()
1200
ret = run_bzr_catch_errors(argv)
1201
trace.mutter("return code %d", ret)
1205
def run_bzr_catch_errors(argv):
1206
"""Run a bzr command with parameters as described by argv.
1208
This function assumed that that UI layer is setup, that symbol deprecations
1209
are already applied, and that unicode decoding has already been performed on argv.
1211
# done here so that they're covered for every test run
1212
install_bzr_command_hooks()
1213
return exception_to_return_code(run_bzr, argv)
1216
def run_bzr_catch_user_errors(argv):
1217
"""Run bzr and report user errors, but let internal errors propagate.
1219
This is used for the test suite, and might be useful for other programs
1220
that want to wrap the commandline interface.
1222
# done here so that they're covered for every test run
1223
install_bzr_command_hooks()
1225
return run_bzr(argv)
645
except BzrCommandError, e:
646
# command line syntax error, etc
650
bzrlib.trace.log_exception()
652
except AssertionError, e:
653
bzrlib.trace.log_exception('assertion failed: ' + str(e))
655
except KeyboardInterrupt, e:
656
bzrlib.trace.log_exception('interrupted')
1226
658
except Exception, e:
1227
if (isinstance(e, (OSError, IOError))
1228
or not getattr(e, 'internal_error', True)):
1229
trace.report_exception(sys.exc_info(), sys.stderr)
1235
class HelpCommandIndex(object):
1236
"""A index for bzr help that returns commands."""
1239
self.prefix = 'commands/'
1241
def get_topics(self, topic):
1242
"""Search for topic amongst commands.
1244
:param topic: A topic to search for.
1245
:return: A list which is either empty or contains a single
1248
if topic and topic.startswith(self.prefix):
1249
topic = topic[len(self.prefix):]
1251
cmd = _get_cmd_object(topic, check_missing=False)
1258
class Provider(object):
1259
"""Generic class to be overriden by plugins"""
1261
def plugin_for_command(self, cmd_name):
1262
"""Takes a command and returns the information for that plugin
1264
:return: A dictionary with all the available information
1265
for the requested plugin
1267
raise NotImplementedError
1270
class ProvidersRegistry(registry.Registry):
1271
"""This registry exists to allow other providers to exist"""
1274
for key, provider in self.iteritems():
1277
command_providers_registry = ProvidersRegistry()
660
if (isinstance(e, IOError)
661
and hasattr(e, 'errno')
662
and e.errno == errno.EPIPE):
663
bzrlib.trace.note('broken pipe')
668
bzrlib.trace.log_exception()
671
if __name__ == '__main__':
672
sys.exit(main(sys.argv))
added
removed
bzrlib/commands.py
