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# Copyright (C) 2004, 2005 by Canonical Ltd
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# Copyright (C) 2005-2010 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., 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.
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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.
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# Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
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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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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.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.branch import find_branch
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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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from bzrlib.hooks import HookPoint, Hooks
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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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global plugin_cmds
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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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return plugin_cmds.register(cmd, decorate)
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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 _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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It supports integers directly, but everything else it
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defers for passing to Branch.get_revision_info()
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>>> _parse_revision_str('234')
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>>> _parse_revision_str('234..567')
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>>> _parse_revision_str('..')
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>>> _parse_revision_str('..234')
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>>> _parse_revision_str('234..')
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>>> _parse_revision_str('234..456..789') # Maybe this should be an error
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>>> _parse_revision_str('234....789') # Error?
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>>> _parse_revision_str('revid:test@other.com-234234')
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['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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['revid:test@other.com-234234', 'revid:test@other.com-234235']
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>>> _parse_revision_str('revid:test@other.com-234234..23')
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['revid:test@other.com-234234', 23]
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>>> _parse_revision_str('date:2005-04-12')
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>>> _parse_revision_str('date:2005-04-12 12:24:33')
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['date:2005-04-12 12:24:33']
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>>> _parse_revision_str('date:2005-04-12T12:24:33')
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['date:2005-04-12T12:24:33']
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>>> _parse_revision_str('date:2005-04-12,12:24:33')
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['date:2005-04-12,12:24:33']
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>>> _parse_revision_str('-5..23')
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>>> _parse_revision_str('-5')
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>>> _parse_revision_str('123a')
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>>> _parse_revision_str('abc')
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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(int(rev))
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for x in revstr.split('..'):
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def get_merge_type(typestring):
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"""Attempt to find the merge class/factory associated with a string."""
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from merge import merge_types
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return merge_types[typestring][0]
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templ = '%s%%7s: %%s' % (' '*12)
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lines = [templ % (f[0], f[1][1]) for f in merge_types.iteritems()]
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type_list = '\n'.join(lines)
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msg = "No known merge type %s. Supported types are:\n%s" %\
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(typestring, type_list)
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raise BzrCommandError(msg)
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@deprecated_function(deprecated_in((2, 2, 0)))
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def _builtin_commands():
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"""Return a dict of {name: cmd_class} for builtin commands.
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:deprecated: Use the builtin_command_registry registry instead
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# return dict(name: cmd_class)
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return dict(builtin_command_registry.items())
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def _register_builtin_commands():
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if builtin_command_registry.keys():
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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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builtins = bzrlib.builtins.__dict__
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for name in builtins:
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for name, obj in module.__dict__.iteritems():
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if name.startswith("cmd_"):
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real_name = _unsquish_command_name(name)
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r[real_name] = builtins[name]
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real_name = _unsquish_command_name(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 _builtin_commands().keys()
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"""Return list of builtin command names.
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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 canonical name and command class for a command.
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"""Return the command object 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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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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raise BzrCommandError("unknown command %r" % 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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class Command(object):
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List of argument forms, marked with whether they are optional,
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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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List of options that may be given for this command.
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List of options that may be given for this command. These can
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be either strings, referring to globally-defined options,
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or option objects. Retrieve through options().
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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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Command objects will get a 'outf' attribute, which has been
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setup to properly handle encoding of unicode strings.
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encoding_type determines what will happen when characters cannot
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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
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stream, therefore LF line-endings are converted to CRLF.
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When a command uses encoding_type = 'exact', then
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sys.stdout is forced to be a binary stream, and line-endings
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:cvar hooks: An instance of CommandHooks.
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:ivar __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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if self.__doc__ == Command.__doc__:
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warn("No help message set for %r" % self)
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def run_argv(self, argv):
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"""Parse command line and run."""
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args, opts = parse_args(argv)
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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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@deprecated_method(deprecated_in((2, 1, 0)))
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def _maybe_expand_globs(self, file_list):
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"""Glob expand file_list if the platform does not do that itself.
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Not used anymore, now that the bzr command-line parser globs on
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:return: A possibly empty list of unicode paths.
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Introduced in bzrlib 0.18.
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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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doc = "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 += ':Purpose: %s\n' % purpose
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if usage.find('\n') >= 0:
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result += ':Usage:\n%s\n' % usage
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result += ':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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options = option.get_optparser(self.options()).format_option_help()
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# XXX: According to the spec, ReST option lists actually don't support
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# options like --1.9 so that causes syntax errors (in Sphinx at least).
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# As that pattern always appears in the commands that break, we trap
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# on that and then format that block of 'format' options as a literal
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if not plain and options.find(' --1.9 ') != -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 += ':' + options
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elif options.startswith('options:'):
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# Python 2.4 version of optparse
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result += ':Options:' + 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 += ':%s:\n %s\n\n' % ('Description',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 sections.has_key(label):
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result += ':%s:\n%s\n' % (label,sections[label])
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result += ("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 += ':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 += ':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 = ":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 += ':See also: '
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result += ', '.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.
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:param additional_terms: Additional help topics to cross-reference.
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:return: A list of help topics.
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see_also = set(getattr(self, '_see_also', []))
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see_also.update(additional_terms)
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return sorted(see_also)
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"""Return dict of valid options for this command.
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Maps from long option name to option object."""
643
r = Option.STD_OPTIONS.copy()
645
for o in self.takes_options:
646
if isinstance(o, basestring):
647
o = option.Option.OPTIONS[o]
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if o.name in std_names:
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self.supported_std_options.append(o.name)
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def _setup_outf(self):
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"""Return a file linked to stdout, which has proper encoding."""
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self.outf = ui.ui_factory.make_output_stream(
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encoding_type=self.encoding_type)
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def run_argv_aliases(self, argv, alias_argv=None):
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"""Parse the command line and run with extra aliases in alias_argv."""
660
args, opts = parse_args(self, argv, alias_argv)
662
# Process the standard options
273
663
if 'help' in opts: # e.g. bzr add --help
274
from bzrlib.help import help_on_command
275
help_on_command(self.name())
278
# check options are reasonable
279
allowed = self.takes_options
281
if oname not in allowed:
282
raise BzrCommandError("option '--%s' is not allowed for command %r"
283
% (oname, self.name()))
664
sys.stdout.write(self.get_help_text())
666
if 'usage' in opts: # e.g. bzr add --usage
667
sys.stdout.write(self.get_help_text(verbose=False))
669
trace.set_verbosity_level(option._verbosity_level)
670
if 'verbose' in self.supported_std_options:
671
opts['verbose'] = trace.is_verbose()
672
elif opts.has_key('verbose'):
674
if 'quiet' in self.supported_std_options:
675
opts['quiet'] = trace.is_quiet()
676
elif opts.has_key('quiet'):
285
679
# mix arguments and options into one dictionary
286
680
cmdargs = _match_argform(self.name(), self.takes_args, args)
317
747
return _unsquish_command_name(self.__class__.__name__)
749
def plugin_name(self):
750
"""Get the name of the plugin that provides this command.
320
def parse_spec(spec):
326
>>> parse_spec("../@")
328
>>> parse_spec("../f/@35")
330
>>> parse_spec('./@revid:john@arbash-meinel.com-20050711044610-3ca0327c6a222f67')
331
['.', 'revid:john@arbash-meinel.com-20050711044610-3ca0327c6a222f67']
336
parsed = spec.split('/@')
337
assert len(parsed) == 2
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':
342
parsed[1] = int(parsed[1])
344
pass # We can allow stuff like ./@revid:blahblahblah
348
parsed = [spec, None]
352
# list of all available options; the rhs can be either None for an
353
# option that takes no argument, or a constructor function that checks
366
'revision': _parse_revision_str,
378
'merge-type': get_merge_type,
392
def parse_args(argv):
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
771
self.create_hook(HookPoint('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), None))
775
self.create_hook(HookPoint('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.create_hook(HookPoint('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 "
787
"command.", (1, 17), None))
788
self.create_hook(HookPoint('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):
393
799
"""Parse command line.
395
801
Arguments and options are parsed at this level before being passed
396
802
down to specific command handlers. This routine knows, from a
397
803
lookup table, something about the available options, what optargs
398
804
they take, and which commands will accept them.
400
>>> parse_args('--help'.split())
402
>>> parse_args('help -- --invalidcmd'.split())
403
(['help', '--invalidcmd'], {})
404
>>> parse_args('--version'.split())
405
([], {'version': True})
406
>>> parse_args('status --all'.split())
407
(['status'], {'all': True})
408
>>> parse_args('commit --message=biter'.split())
409
(['commit'], {'message': u'biter'})
410
>>> parse_args('log -r 500'.split())
411
(['log'], {'revision': [500]})
412
>>> parse_args('log -r500..600'.split())
413
(['log'], {'revision': [500, 600]})
414
>>> parse_args('log -vr500..600'.split())
415
(['log'], {'verbose': True, 'revision': [500, 600]})
416
>>> parse_args('log -rv500..600'.split()) #the r takes an argument
417
(['log'], {'revision': ['v500', 600]})
425
if not argsover and a[0] == '-':
426
# option names must not be unicode
431
# We've received a standalone -- No more flags
434
mutter(" got option %r" % a)
436
optname, optarg = a[2:].split('=', 1)
439
if optname not in OPTIONS:
440
raise BzrError('unknown long option %r' % a)
443
if shortopt in SHORT_OPTIONS:
444
# Multi-character options must have a space to delimit
446
optname = SHORT_OPTIONS[shortopt]
448
# Single character short options, can be chained,
449
# and have their value appended to their name
451
if shortopt not in SHORT_OPTIONS:
452
# We didn't find the multi-character name, and we
453
# didn't find the single char name
454
raise BzrError('unknown short option %r' % a)
455
optname = SHORT_OPTIONS[shortopt]
458
# There are extra things on this option
459
# see if it is the value, or if it is another
461
optargfn = OPTIONS[optname]
463
# This option does not take an argument, so the
464
# next entry is another short option, pack it back
466
argv.insert(0, '-' + a[2:])
468
# This option takes an argument, so pack it
473
# XXX: Do we ever want to support this, e.g. for -r?
474
raise BzrError('repeated option %r' % a)
476
optargfn = OPTIONS[optname]
480
raise BzrError('option %r needs an argument' % a)
483
opts[optname] = optargfn(optarg)
486
raise BzrError('option %r takes no argument' % optname)
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
options, args = parser.parse_args(args)
814
opts = dict([(k, v) for k, v in options.__dict__.iteritems() if
815
v is not option.OptionParser.DEFAULT_VALUE])
491
816
return args, opts
496
819
def _match_argform(cmd, takes_args, args):
510
833
argdict[argname + '_list'] = None
511
834
elif ap[-1] == '+':
513
raise BzrCommandError("command %r needs one or more %s"
514
% (cmd, argname.upper()))
836
raise errors.BzrCommandError("command %r needs one or more %s"
837
% (cmd, argname.upper()))
516
839
argdict[argname + '_list'] = args[:]
518
841
elif ap[-1] == '$': # all but one
519
842
if len(args) < 2:
520
raise BzrCommandError("command %r needs one or more %s"
521
% (cmd, argname.upper()))
843
raise errors.BzrCommandError("command %r needs one or more %s"
844
% (cmd, argname.upper()))
522
845
argdict[argname + '_list'] = args[:-1]
525
848
# just a plain arg
528
raise BzrCommandError("command %r requires argument %s"
529
% (cmd, argname.upper()))
851
raise errors.BzrCommandError("command %r requires argument %s"
852
% (cmd, argname.upper()))
531
854
argdict[argname] = args.pop(0)
534
raise BzrCommandError("extra argument to command %s: %s"
857
raise errors.BzrCommandError("extra argument to command %s: %s"
862
def apply_coveraged(dirname, the_callable, *args, **kwargs):
863
# Cannot use "import trace", as that would import bzrlib.trace instead of
864
# the standard library's trace.
865
trace = __import__('trace')
867
tracer = trace.Trace(count=1, trace=0)
868
sys.settrace(tracer.globaltrace)
869
threading.settrace(tracer.globaltrace)
872
return exception_to_return_code(the_callable, *args, **kwargs)
875
results = tracer.results()
876
results.write_results(show_missing=1, summary=False,
541
880
def apply_profiled(the_callable, *args, **kwargs):
544
884
pffileno, pfname = tempfile.mkstemp()
546
886
prof = hotshot.Profile(pfname)
548
ret = prof.runcall(the_callable, *args, **kwargs) or 0
888
ret = prof.runcall(exception_to_return_code, the_callable, *args,
553
892
stats = hotshot.stats.load(pfname)
555
stats.sort_stats('time')
894
stats.sort_stats('cum') # 'time'
556
895
## XXX: Might like to write to stderr or the trace file instead but
557
896
## print_stats seems hardcoded to stdout
558
897
stats.print_stats(20)
562
900
os.close(pffileno)
563
901
os.remove(pfname)
904
def exception_to_return_code(the_callable, *args, **kwargs):
905
"""UI level helper for profiling and coverage.
907
This transforms exceptions into a return value of 3. As such its only
908
relevant to the UI layer, and should never be called where catching
909
exceptions may be desirable.
912
return the_callable(*args, **kwargs)
913
except (KeyboardInterrupt, Exception), e:
914
# used to handle AssertionError and KeyboardInterrupt
915
# specially here, but hopefully they're handled ok by the logger now
916
exc_info = sys.exc_info()
917
exitcode = trace.report_exception(exc_info, sys.stderr)
918
if os.environ.get('BZR_PDB'):
919
print '**** entering debugger'
922
if sys.version_info[:2] < (2, 6):
924
# pdb.post_mortem(tb)
925
# but because pdb.post_mortem gives bad results for tracebacks
926
# from inside generators, we do it manually.
927
# (http://bugs.python.org/issue4150, fixed in Python 2.6)
929
# Setup pdb on the traceback
932
p.setup(tb.tb_frame, tb)
933
# Point the debugger at the deepest frame of the stack
934
p.curindex = len(p.stack) - 1
935
p.curframe = p.stack[p.curindex][0]
936
# Start the pdb prompt.
937
p.print_stack_entry(p.stack[p.curindex])
945
def apply_lsprofiled(filename, the_callable, *args, **kwargs):
946
from bzrlib.lsprof import profile
947
ret, stats = profile(exception_to_return_code, the_callable, *args, **kwargs)
953
trace.note('Profile data written to "%s".', filename)
957
@deprecated_function(deprecated_in((2, 2, 0)))
958
def shlex_split_unicode(unsplit):
959
return cmdline.split(unsplit)
962
def get_alias(cmd, config=None):
963
"""Return an expanded alias, or None if no alias exists.
966
Command to be checked for an alias.
968
Used to specify an alternative config to use,
969
which is especially useful for testing.
970
If it is unspecified, the global config will be used.
974
config = bzrlib.config.GlobalConfig()
975
alias = config.get_alias(cmd)
977
return cmdline.split(alias)
981
def run_bzr(argv, load_plugins=load_plugins, disable_plugins=disable_plugins):
567
982
"""Execute a command.
569
This is similar to main(), but without all the trappings for
570
logging and error handling.
573
The command-line arguments, without the program name from argv[0]
575
Returns a command status or raises an exception.
984
:param argv: The command-line arguments, without the program name from
985
argv[0] These should already be decoded. All library/test code calling
986
run_bzr should be passing valid strings (don't need decoding).
987
:param load_plugins: What function to call when triggering plugin loading.
988
This function should take no arguments and cause all plugins to be
990
:param disable_plugins: What function to call when disabling plugin
991
loading. This function should take no arguments and cause all plugin
992
loading to be prohibited (so that code paths in your application that
993
know about some plugins possibly being present will fail to import
994
those plugins even if they are installed.)
995
:return: Returns a command exit code or raises an exception.
577
997
Special master options: these must come before the command because
578
998
they control how the command is interpreted.
581
1001
Do not load plugin modules at all
1004
Do not allow aliases
584
1007
Only use builtin commands. (Plugins are still allowed to change
585
1008
other behaviour.)
588
Run under the Python profiler.
1011
Run under the Python hotshot profiler.
1014
Run under the Python lsprof profiler.
1017
Generate line coverage report in the specified directory.
1020
Specify the number of processes that can be run concurrently (selftest).
590
# Load all of the transport methods
591
import bzrlib.transport.local, bzrlib.transport.http
593
argv = [a.decode(bzrlib.user_encoding) for a in argv]
1022
trace.mutter("bazaar version: " + bzrlib.__version__)
1024
trace.mutter("bzr arguments: %r", argv)
595
opt_profile = opt_no_plugins = opt_builtin = False
1026
opt_lsprof = opt_profile = opt_no_plugins = opt_builtin = \
1027
opt_no_aliases = False
1028
opt_lsprof_file = opt_coverage_dir = None
597
1030
# --no-plugins is handled specially at a very early stage. We need
598
1031
# to load plugins before doing other command parsing so that they
599
1032
# can override commands, but this needs to happen first.
1036
while i < len(argv):
602
1038
if a == '--profile':
603
1039
opt_profile = True
1040
elif a == '--lsprof':
1042
elif a == '--lsprof-file':
1044
opt_lsprof_file = argv[i + 1]
604
1046
elif a == '--no-plugins':
605
1047
opt_no_plugins = True
1048
elif a == '--no-aliases':
1049
opt_no_aliases = True
606
1050
elif a == '--builtin':
607
1051
opt_builtin = True
612
if (not argv) or (argv[0] == '--help'):
613
from bzrlib.help import help
620
if argv[0] == '--version':
621
from bzrlib.builtins import show_version
1052
elif a == '--concurrency':
1053
os.environ['BZR_CONCURRENCY'] = argv[i + 1]
1055
elif a == '--coverage':
1056
opt_coverage_dir = argv[i + 1]
1058
elif a == '--profile-imports':
1059
pass # already handled in startup script Bug #588277
1060
elif a.startswith('-D'):
1061
debug.debug_flags.add(a[2:])
1066
debug.set_debug_flags_from_config()
625
1068
if not opt_no_plugins:
626
from bzrlib.plugin import load_plugins
629
cmd = str(argv.pop(0))
1075
get_cmd_object('help').run_argv_aliases([])
1078
if argv[0] == '--version':
1079
get_cmd_object('version').run_argv_aliases([])
1084
if not opt_no_aliases:
1085
alias_argv = get_alias(argv[0])
1087
argv[0] = alias_argv.pop(0)
631
1090
cmd_obj = get_cmd_object(cmd, plugins_override=not opt_builtin)
634
ret = apply_profiled(cmd_obj.run_argv, argv)
1091
run = cmd_obj.run_argv_aliases
1092
run_argv = [argv, alias_argv]
1095
# We can be called recursively (tests for example), but we don't want
1096
# the verbosity level to propagate.
1097
saved_verbosity_level = option._verbosity_level
1098
option._verbosity_level = 0
1100
if opt_coverage_dir:
1102
'--coverage ignored, because --lsprof is in use.')
1103
ret = apply_lsprofiled(opt_lsprof_file, run, *run_argv)
1105
if opt_coverage_dir:
1107
'--coverage ignored, because --profile is in use.')
1108
ret = apply_profiled(run, *run_argv)
1109
elif opt_coverage_dir:
1110
ret = apply_coveraged(opt_coverage_dir, run, *run_argv)
1112
ret = run(*run_argv)
1115
# reset, in case we may do other commands later within the same
1116
# process. Commands that want to execute sub-commands must propagate
1117
# --verbose in their own way.
1118
if 'memory' in debug.debug_flags:
1119
trace.debug_memory('Process status after command:', short=False)
1120
option._verbosity_level = saved_verbosity_level
1123
def display_command(func):
1124
"""Decorator that suppresses pipe/interrupt errors."""
1125
def ignore_pipe(*args, **kwargs):
1127
result = func(*args, **kwargs)
1131
if getattr(e, 'errno', None) is None:
1133
if e.errno != errno.EPIPE:
1134
# Win32 raises IOError with errno=0 on a broken pipe
1135
if sys.platform != 'win32' or (e.errno not in (0, errno.EINVAL)):
1138
except KeyboardInterrupt:
1143
def install_bzr_command_hooks():
1144
"""Install the hooks to supply bzr's own commands."""
1145
if _list_bzr_commands in Command.hooks["list_commands"]:
1147
Command.hooks.install_named_hook("list_commands", _list_bzr_commands,
1149
Command.hooks.install_named_hook("get_command", _get_bzr_command,
1151
Command.hooks.install_named_hook("get_command", _get_plugin_command,
1152
"bzr plugin commands")
1153
Command.hooks.install_named_hook("get_command", _get_external_command,
1154
"bzr external command lookup")
1155
Command.hooks.install_named_hook("get_missing_command", _try_plugin_provider,
1156
"bzr plugin-provider-db check")
1160
def _specified_or_unicode_argv(argv):
1161
# For internal or testing use, argv can be passed. Otherwise, get it from
1162
# the process arguments in a unicode-safe way.
1164
return osutils.get_unicode_argv()
636
ret = cmd_obj.run_argv(argv)
642
bzrlib.trace.log_startup(argv)
643
bzrlib.ui.ui_factory = bzrlib.ui.TextUIFactory()
1168
# ensure all arguments are unicode strings
1170
if isinstance(a, unicode):
1173
new_argv.append(a.decode('ascii'))
1174
except UnicodeDecodeError:
1175
raise errors.BzrError("argv should be list of unicode strings.")
1179
def main(argv=None):
1180
"""Main entry point of command-line interface.
1182
Typically `bzrlib.initialize` should be called first.
1184
:param argv: list of unicode command-line arguments similar to sys.argv.
1185
argv[0] is script name usually, it will be ignored.
1186
Don't pass here sys.argv because this list contains plain strings
1187
and not unicode; pass None instead.
1189
:return: exit code of bzr command.
1191
argv = _specified_or_unicode_argv(argv)
1192
_register_builtin_commands()
1193
ret = run_bzr_catch_errors(argv)
1194
bzrlib.ui.ui_factory.log_transport_activity(
1195
display=('bytes' in debug.debug_flags))
1196
trace.mutter("return code %d", ret)
1200
def run_bzr_catch_errors(argv):
1201
"""Run a bzr command with parameters as described by argv.
1203
This function assumed that that UI layer is setup, that symbol deprecations
1204
are already applied, and that unicode decoding has already been performed on argv.
1206
# done here so that they're covered for every test run
1207
install_bzr_command_hooks()
1208
return exception_to_return_code(run_bzr, argv)
1211
def run_bzr_catch_user_errors(argv):
1212
"""Run bzr and report user errors, but let internal errors propagate.
1214
This is used for the test suite, and might be useful for other programs
1215
that want to wrap the commandline interface.
1217
# done here so that they're covered for every test run
1218
install_bzr_command_hooks()
648
return run_bzr(argv[1:])
650
# do this here inside the exception wrappers to catch EPIPE
652
#wrap common errors as CommandErrors.
653
except (NotBranchError,), e:
654
raise BzrCommandError(str(e))
655
except BzrCommandError, e:
656
# command line syntax error, etc
660
bzrlib.trace.log_exception()
662
except AssertionError, e:
663
bzrlib.trace.log_exception('assertion failed: ' + str(e))
665
except KeyboardInterrupt, e:
666
bzrlib.trace.note('interrupted')
1220
return run_bzr(argv)
668
1221
except Exception, e:
670
if (isinstance(e, IOError)
671
and hasattr(e, 'errno')
672
and e.errno == errno.EPIPE):
673
bzrlib.trace.note('broken pipe')
676
bzrlib.trace.log_exception()
679
if __name__ == '__main__':
680
sys.exit(main(sys.argv))
1222
if (isinstance(e, (OSError, IOError))
1223
or not getattr(e, 'internal_error', True)):
1224
trace.report_exception(sys.exc_info(), sys.stderr)
1230
class HelpCommandIndex(object):
1231
"""A index for bzr help that returns commands."""
1234
self.prefix = 'commands/'
1236
def get_topics(self, topic):
1237
"""Search for topic amongst commands.
1239
:param topic: A topic to search for.
1240
:return: A list which is either empty or contains a single
1243
if topic and topic.startswith(self.prefix):
1244
topic = topic[len(self.prefix):]
1246
cmd = _get_cmd_object(topic, check_missing=False)
1253
class Provider(object):
1254
'''Generic class to be overriden by plugins'''
1256
def plugin_for_command(self, cmd_name):
1257
'''Takes a command and returns the information for that plugin
1259
:return: A dictionary with all the available information
1260
for the requested plugin
1262
raise NotImplementedError
1265
class ProvidersRegistry(registry.Registry):
1266
'''This registry exists to allow other providers to exist'''
1269
for key, provider in self.iteritems():
1272
command_providers_registry = ProvidersRegistry()