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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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from __future__ import absolute_import
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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 .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 .hooks import Hooks
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from .i18n import gettext
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# Compatibility - Option used to be in commands.
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from .option import Option
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from .plugin import disable_plugins, load_plugins, plugin_name
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from . import errors, registry
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class BzrOptionError(errors.BzrCommandError):
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_fmt = "Error in command line options"
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class CommandAvailableInPlugin(Exception):
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internal_error = False
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def __init__(self, cmd_name, plugin_metadata, provider):
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self.plugin_metadata = plugin_metadata
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self.cmd_name = cmd_name
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self.provider = provider
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_fmt = ('"%s" is not a standard brz command. \n'
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'However, the following official plugin provides this command: %s\n'
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'You can install it by going to: %s'
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% (self.cmd_name, self.plugin_metadata['name'],
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self.plugin_metadata['url']))
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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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self._alias_dict = {}
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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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from bzrlib.errors import (BzrError,
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from bzrlib.option import Option
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from bzrlib.revisionspec import RevisionSpec
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from bzrlib.symbol_versioning import *
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from bzrlib.trace import mutter, note, log_error, warning, be_quiet
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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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"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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if decorate and k_unsquished in builtin_command_names():
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return _builtin_commands()[k_unsquished]
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result = plugin_cmds[k_unsquished]
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plugin_cmds[k_unsquished] = cmd
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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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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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import breezy.builtins
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for cmd_class in _scan_module_for_commands(breezy.builtins):
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builtin_command_registry.register(cmd_class)
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breezy.builtins._register_lazy_builtins()
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def _scan_module_for_commands(module):
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module_dict = module.__dict__
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for name in module_dict:
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assert cmd.startswith("cmd_")
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return cmd[4:].replace('_','-')
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def _builtin_commands():
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import bzrlib.builtins
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builtins = bzrlib.builtins.__dict__
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if name.startswith("cmd_"):
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yield module_dict[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
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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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real_name = _unsquish_command_name(name)
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r[real_name] = builtins[name]
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def builtin_command_names():
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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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"""Return list of builtin command names."""
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return _builtin_commands().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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# Overrides for common mispellings that heuristics get wrong
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'ic': {'ci': 0}, # heuristic finds nick
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def guess_command(cmd_name):
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"""Guess what command a user typoed.
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:param cmd_name: Command to search for
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:return: None if no command was found, name of a command otherwise
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for name in all_command_names():
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cmd = get_cmd_object(name)
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names.update(cmd.aliases)
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# candidate: modified levenshtein distance against cmd_name.
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for name in sorted(names):
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matcher = patiencediff.PatienceSequenceMatcher(None, cmd_name, name)
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opcodes = matcher.get_opcodes()
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for opcode, l1, l2, r1, r2 in opcodes:
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if opcode == 'delete':
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elif opcode == 'replace':
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distance += max(l2 - l1, r2 - l1)
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elif opcode == 'insert':
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elif opcode == 'equal':
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# Score equal ranges lower, making similar commands of equal
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# length closer than arbitrary same length commands.
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distance -= 0.1 * (l2 - l1)
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costs[name] = distance
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costs.update(_GUESS_OVERRIDES.get(cmd_name, {}))
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costs = sorted((costs[key], key) for key in costs)
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candidate = costs[0][1]
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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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# No command found, see if this was a typo
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candidate = guess_command(cmd_name)
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if candidate is not None:
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raise errors.BzrCommandError(
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gettext('unknown command "%s". Perhaps you meant "%s"')
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% (cmd_name, candidate))
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raise errors.BzrCommandError(gettext('unknown command "%s"')
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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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class NoPluginAvailable(errors.BzrError):
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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 CommandAvailableInPlugin(cmd_name, plugin_metadata, provider)
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except 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 NoPluginAvailable:
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raise 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 breezy.externalcommand import ExternalCommand
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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 brz'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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"""Base class for commands.
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Commands are the heart of the command-line brz interface.
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Commands are the heart of the command-line bzr interface.
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The command object mostly handles the mapping of command-line
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parameters into one or more breezy operations, and of the results
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parameters into one or more bzrlib operations, and of the results
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into textual output.
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Commands normally don't have any state. All their arguments are
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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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['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. 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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: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 'brz 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._exit_stack.callback(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._exit_stack.close()
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def enter_context(self, cm):
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return self._exit_stack.enter_context(cm)
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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 = 'brz ' + 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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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, brz 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 'Usage' in sections:
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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(
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[v for k, v in sorted(self.options().items())])
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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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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 brz 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
642
link_text = gettext(":doc:`{0} <{1}-help>`").format(
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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 breezy.help_topics
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result = breezy.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 label in sections:
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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
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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', []))
709
see_also.update(additional_terms)
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return sorted(see_also)
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if self.__doc__ == Command.__doc__:
197
warn("No help message set for %r" % self)
712
199
def options(self):
713
200
"""Return dict of valid options for this command.
715
202
Maps from long option name to option object."""
716
r = Option.STD_OPTIONS.copy()
204
r['help'] = Option.OPTIONS['help']
718
205
for o in self.takes_options:
719
if isinstance(o, string_types):
720
o = option.Option.OPTIONS[o]
206
if not isinstance(o, Option):
207
o = Option.OPTIONS[o]
722
if o.name in std_names:
723
self.supported_std_options.append(o.name)
726
def _setup_outf(self):
727
"""Return a file linked to stdout, which has proper encoding."""
728
self.outf = ui.ui_factory.make_output_stream(
729
encoding_type=self.encoding_type)
211
@deprecated_method(zero_eight)
212
def run_argv(self, argv):
213
"""Parse command line and run.
215
See run_argv_aliases for the 0.8 and beyond api.
217
return self.run_argv_aliases(argv)
731
219
def run_argv_aliases(self, argv, alias_argv=None):
732
220
"""Parse the command line and run with extra aliases in alias_argv."""
733
221
args, opts = parse_args(self, argv, alias_argv)
736
# Process the standard options
737
if 'help' in opts: # e.g. brz add --help
738
self.outf.write(self.get_help_text())
740
if 'usage' in opts: # e.g. brz add --usage
741
self.outf.write(self.get_help_text(verbose=False))
743
trace.set_verbosity_level(option._verbosity_level)
744
if 'verbose' in self.supported_std_options:
745
opts['verbose'] = trace.is_verbose()
746
elif 'verbose' in opts:
748
if 'quiet' in self.supported_std_options:
749
opts['quiet'] = trace.is_quiet()
750
elif 'quiet' in opts:
222
if 'help' in opts: # e.g. bzr add --help
223
from bzrlib.help import help_on_command
224
help_on_command(self.name())
226
# XXX: This should be handled by the parser
227
allowed_names = self.options().keys()
229
if oname not in allowed_names:
230
raise BzrCommandError("option '--%s' is not allowed for"
231
" command %r" % (oname, self.name()))
752
232
# mix arguments and options into one dictionary
753
233
cmdargs = _match_argform(self.name(), self.takes_args, args)
799
249
Return 0 or None if the command was successful, or a non-zero
800
250
shell error code if not. It's OK for this method to allow
801
251
an exception to raise up.
803
This method is automatically wrapped by Command.__init__ with a
804
ExitStack, stored as self._exit_stack. This can be used
805
via self.add_cleanup to perform automatic cleanups at the end of
808
The argument for run are assembled by introspection. So for instance,
809
if your command takes an argument files, you would declare::
811
def run(self, files=None):
814
raise NotImplementedError('no implementation of command %r'
253
raise NotImplementedError()
818
257
"""Return help message for this class."""
819
from inspect import getdoc
820
258
if self.__doc__ is Command.__doc__:
822
260
return getdoc(self)
824
def gettext(self, message):
825
"""Returns the gettext function used to translate this command's help.
827
Commands provided by plugins should override this to use their
830
return i18n.gettext_per_paragraph(message)
833
"""Return the canonical name for this command.
835
The name under which it was actually invoked is available in invoked_as
837
263
return _unsquish_command_name(self.__class__.__name__)
839
def plugin_name(self):
840
"""Get the name of the plugin that provides this command.
842
:return: The name of the plugin or None if the command is builtin.
844
return plugin_name(self.__module__)
847
class CommandHooks(Hooks):
848
"""Hooks related to Command object creation/enumeration."""
851
"""Create the default hooks.
853
These are all empty initially, because by default nothing should get
856
Hooks.__init__(self, "breezy.commands", "Command.hooks")
859
"Called after creating a command object to allow modifications "
860
"such as adding or removing options, docs etc. Called with the "
861
"new breezy.commands.Command object.", (1, 13))
864
"Called when creating a single command. Called with "
865
"(cmd_or_None, command_name). get_command should either return "
866
"the cmd_or_None parameter, or a replacement Command object that "
867
"should be used for the command. Note that the Command.hooks "
868
"hooks are core infrastructure. Many users will prefer to use "
869
"breezy.commands.register_command or plugin_cmds.register_lazy.",
872
'get_missing_command',
873
"Called when creating a single command if no command could be "
874
"found. Called with (command_name). get_missing_command should "
875
"either return None, or a Command object to be used for the "
879
"Called when enumerating commands. Called with a set of "
880
"cmd_name strings for all the commands found so far. This set "
881
" is safe to mutate - e.g. to remove a command. "
882
"list_commands should return the updated set of command names.",
886
"Called prior to executing a command. Called with the command "
890
"Called after executing a command. Called with the command "
894
Command.hooks = CommandHooks()
266
def parse_spec(spec):
272
>>> parse_spec("../@")
274
>>> parse_spec("../f/@35")
276
>>> parse_spec('./@revid:john@arbash-meinel.com-20050711044610-3ca0327c6a222f67')
277
['.', 'revid:john@arbash-meinel.com-20050711044610-3ca0327c6a222f67']
282
parsed = spec.split('/@')
283
assert len(parsed) == 2
288
parsed[1] = int(parsed[1])
290
pass # We can allow stuff like ./@revid:blahblahblah
294
parsed = [spec, None]
897
297
def parse_args(command, argv, alias_argv=None):
898
298
"""Parse command line.
900
300
Arguments and options are parsed at this level before being passed
901
301
down to specific command handlers. This routine knows, from a
902
302
lookup table, something about the available options, what optargs
903
303
they take, and which commands will accept them.
905
# TODO: make it a method of the Command?
906
parser = option.get_optparser(
907
[v for k, v in sorted(command.options().items())])
908
if alias_argv is not None:
909
args = alias_argv + argv
913
# python 2's optparse raises this exception if a non-ascii
914
# option name is given. See http://bugs.python.org/issue2931
916
options, args = parser.parse_args(args)
917
except UnicodeEncodeError:
918
raise errors.BzrCommandError(
919
gettext('Only ASCII permitted in option names'))
921
opts = dict((k, v) for k, v in options.__dict__.items() if
922
v is not option.OptionParser.DEFAULT_VALUE)
305
# TODO: chop up this beast; make it a method of the Command
310
cmd_options = command.options()
312
proc_aliasarg = True # Are we processing alias_argv now?
313
for proc_argv in alias_argv, argv:
320
# We've received a standalone -- No more flags
324
# option names must not be unicode
328
mutter(" got option %r", a)
330
optname, optarg = a[2:].split('=', 1)
333
if optname not in cmd_options:
334
raise BzrOptionError('unknown long option %r for'
339
if shortopt in Option.SHORT_OPTIONS:
340
# Multi-character options must have a space to delimit
342
# ^^^ what does this mean? mbp 20051014
343
optname = Option.SHORT_OPTIONS[shortopt].name
345
# Single character short options, can be chained,
346
# and have their value appended to their name
348
if shortopt not in Option.SHORT_OPTIONS:
349
# We didn't find the multi-character name, and we
350
# didn't find the single char name
351
raise BzrError('unknown short option %r' % a)
352
optname = Option.SHORT_OPTIONS[shortopt].name
355
# There are extra things on this option
356
# see if it is the value, or if it is another
358
optargfn = Option.OPTIONS[optname].type
360
# This option does not take an argument, so the
361
# next entry is another short option, pack it
363
proc_argv.insert(0, '-' + a[2:])
365
# This option takes an argument, so pack it
369
if optname not in cmd_options:
370
raise BzrOptionError('unknown short option %r for'
372
(shortopt, command.name()))
374
# XXX: Do we ever want to support this, e.g. for -r?
376
raise BzrError('repeated option %r' % a)
377
elif optname in alias_opts:
378
# Replace what's in the alias with what's in the real
380
del alias_opts[optname]
382
proc_argv.insert(0, a)
385
raise BzrError('repeated option %r' % a)
387
option_obj = cmd_options[optname]
388
optargfn = option_obj.type
392
raise BzrError('option %r needs an argument' % a)
394
optarg = proc_argv.pop(0)
395
opts[optname] = optargfn(optarg)
397
alias_opts[optname] = optargfn(optarg)
400
raise BzrError('option %r takes no argument' % optname)
403
alias_opts[optname] = True
406
proc_aliasarg = False # Done with alias argv
923
407
return args, opts
1011
475
os.remove(pfname)
1014
def exception_to_return_code(the_callable, *args, **kwargs):
1015
"""UI level helper for profiling and coverage.
1017
This transforms exceptions into a return value of 3. As such its only
1018
relevant to the UI layer, and should never be called where catching
1019
exceptions may be desirable.
1022
return the_callable(*args, **kwargs)
1023
except (KeyboardInterrupt, Exception):
1024
# used to handle AssertionError and KeyboardInterrupt
1025
# specially here, but hopefully they're handled ok by the logger now
1026
exc_info = sys.exc_info()
1027
exitcode = trace.report_exception(exc_info, sys.stderr)
1028
if os.environ.get('BRZ_PDB'):
1029
print('**** entering debugger')
1031
pdb.post_mortem(exc_info[2])
1035
478
def apply_lsprofiled(filename, the_callable, *args, **kwargs):
1036
from breezy.lsprof import profile
1037
ret, stats = profile(exception_to_return_code, the_callable,
479
from bzrlib.lsprof import profile
481
ret, stats = profile(the_callable, *args, **kwargs)
1040
483
if filename is None:
1043
stats.save(filename)
1044
trace.note(gettext('Profile data written to "%s".'), filename)
487
cPickle.dump(stats, open(filename, 'w'), 2)
488
print 'Profile data written to %r.' % filename
1048
def get_alias(cmd, config=None):
1049
"""Return an expanded alias, or None if no alias exists.
1052
Command to be checked for an alias.
1054
Used to specify an alternative config to use,
1055
which is especially useful for testing.
1056
If it is unspecified, the global config will be used.
1059
import breezy.config
1060
config = breezy.config.GlobalConfig()
1061
alias = config.get_alias(cmd)
493
"""Return an expanded alias, or None if no alias exists"""
495
alias = bzrlib.config.GlobalConfig().get_alias(cmd)
1063
return cmdline.split(alias)
497
return alias.split(' ')
1067
def run_bzr(argv, load_plugins=load_plugins, disable_plugins=disable_plugins):
1068
502
"""Execute a command.
1070
:param argv: The command-line arguments, without the program name from
1071
argv[0] These should already be decoded. All library/test code calling
1072
run_bzr should be passing valid strings (don't need decoding).
1073
:param load_plugins: What function to call when triggering plugin loading.
1074
This function should take no arguments and cause all plugins to be
1076
:param disable_plugins: What function to call when disabling plugin
1077
loading. This function should take no arguments and cause all plugin
1078
loading to be prohibited (so that code paths in your application that
1079
know about some plugins possibly being present will fail to import
1080
those plugins even if they are installed.)
1081
:return: Returns a command exit code or raises an exception.
504
This is similar to main(), but without all the trappings for
505
logging and error handling.
508
The command-line arguments, without the program name from argv[0]
510
Returns a command status or raises an exception.
1083
512
Special master options: these must come before the command because
1084
513
they control how the command is interpreted.
1128
547
elif a == '--lsprof':
1129
548
opt_lsprof = True
1130
549
elif a == '--lsprof-file':
1132
550
opt_lsprof_file = argv[i + 1]
1134
552
elif a == '--no-plugins':
1135
553
opt_no_plugins = True
1136
554
elif a == '--no-aliases':
1137
555
opt_no_aliases = True
1138
elif a == '--no-l10n':
1140
556
elif a == '--builtin':
1141
557
opt_builtin = True
1142
elif a == '--concurrency':
1143
os.environ['BRZ_CONCURRENCY'] = argv[i + 1]
1145
elif a == '--coverage':
1147
elif a == '--profile-imports':
1148
pass # already handled in startup script Bug #588277
1149
elif a.startswith('-D'):
1150
debug.debug_flags.add(a[2:])
1151
elif a.startswith('-O'):
1152
override_config.append(a[2:])
558
elif a in ('--quiet', '-q'):
1154
561
argv_copy.append(a)
1157
cmdline_overrides = breezy.get_global_state().cmdline_overrides
1158
cmdline_overrides._from_cmdline(override_config)
1160
debug.set_debug_flags_from_config()
565
if (not argv) or (argv[0] == '--help'):
566
from bzrlib.help import help
573
if argv[0] == '--version':
574
from bzrlib.builtins import show_version
1162
578
if not opt_no_plugins:
579
from bzrlib.plugin import load_plugins
582
from bzrlib.plugin import disable_plugins
1165
583
disable_plugins()
1169
get_cmd_object('help').run_argv_aliases([])
1172
if argv[0] == '--version':
1173
get_cmd_object('version').run_argv_aliases([])
1176
585
alias_argv = None
1178
587
if not opt_no_aliases:
1179
588
alias_argv = get_alias(argv[0])
590
alias_argv = [a.decode(bzrlib.user_encoding) for a in alias_argv]
1181
591
argv[0] = alias_argv.pop(0)
593
cmd = str(argv.pop(0))
1184
595
cmd_obj = get_cmd_object(cmd, plugins_override=not opt_builtin)
1186
cmd_obj.l10n = False
1187
run = cmd_obj.run_argv_aliases
1188
run_argv = [argv, alias_argv]
596
if not getattr(cmd_obj.run_argv, 'is_deprecated', False):
597
run = cmd_obj.run_argv
600
run = cmd_obj.run_argv_aliases
601
run_argv = [argv, alias_argv]
1191
# We can be called recursively (tests for example), but we don't want
1192
# the verbosity level to propagate.
1193
saved_verbosity_level = option._verbosity_level
1194
option._verbosity_level = 0
1198
'--coverage ignored, because --lsprof is in use.')
1199
605
ret = apply_lsprofiled(opt_lsprof_file, run, *run_argv)
1200
606
elif opt_profile:
1203
'--coverage ignored, because --profile is in use.')
1204
607
ret = apply_profiled(run, *run_argv)
1206
ret = apply_coveraged(run, *run_argv)
1208
609
ret = run(*run_argv)
1211
# reset, in case we may do other commands later within the same
1212
# process. Commands that want to execute sub-commands must propagate
1213
# --verbose in their own way.
1214
if 'memory' in debug.debug_flags:
1215
trace.debug_memory('Process status after command:', short=False)
1216
option._verbosity_level = saved_verbosity_level
1217
# Reset the overrides
1218
cmdline_overrides._reset()
612
# reset, in case we may do other commands later within the same process
1221
615
def display_command(func):
1222
616
"""Decorator that suppresses pipe/interrupt errors."""
1225
619
result = func(*args, **kwargs)
1226
620
sys.stdout.flush()
1228
except IOError as e:
1229
if getattr(e, 'errno', None) is None:
623
if not hasattr(e, 'errno'):
1231
625
if e.errno != errno.EPIPE:
1232
# Win32 raises IOError with errno=0 on a broken pipe
1233
if sys.platform != 'win32' or (e.errno not in (0, errno.EINVAL)):
1236
628
except KeyboardInterrupt:
1238
630
return ignore_pipe
1241
def install_bzr_command_hooks():
1242
"""Install the hooks to supply bzr's own commands."""
1243
if _list_bzr_commands in Command.hooks["list_commands"]:
1245
Command.hooks.install_named_hook("list_commands", _list_bzr_commands,
1247
Command.hooks.install_named_hook("get_command", _get_bzr_command,
1249
Command.hooks.install_named_hook("get_command", _get_plugin_command,
1250
"bzr plugin commands")
1251
Command.hooks.install_named_hook("get_command", _get_external_command,
1252
"bzr external command lookup")
1253
Command.hooks.install_named_hook("get_missing_command",
1254
_try_plugin_provider,
1255
"bzr plugin-provider-db check")
1258
def _specified_or_unicode_argv(argv):
1259
# For internal or testing use, argv can be passed. Otherwise, get it from
1260
# the process arguments in a unicode-safe way.
1262
return osutils.get_unicode_argv()
1265
# ensure all arguments are unicode strings
1267
if not isinstance(a, string_types):
1268
raise ValueError('not native str or unicode: %r' % (a,))
1269
if isinstance(a, bytes):
1270
# For Python 2 only allow ascii native strings
1271
a = a.decode('ascii')
1273
except (ValueError, UnicodeDecodeError):
1274
raise errors.BzrError("argv should be list of unicode strings.")
1278
def main(argv=None):
1279
"""Main entry point of command-line interface.
1281
Typically `breezy.initialize` should be called first.
1283
:param argv: list of unicode command-line arguments similar to sys.argv.
1284
argv[0] is script name usually, it will be ignored.
1285
Don't pass here sys.argv because this list contains plain strings
1286
and not unicode; pass None instead.
1288
:return: exit code of brz command.
1290
if argv is not None:
1292
_register_builtin_commands()
1293
ret = run_bzr_catch_errors(argv)
1294
trace.mutter("return code %d", ret)
635
from bzrlib.ui.text import TextUIFactory
636
## bzrlib.trace.enable_default_logging()
637
bzrlib.trace.log_startup(argv)
638
bzrlib.ui.ui_factory = TextUIFactory()
639
ret = run_bzr_catch_errors(argv[1:])
640
mutter("return code %d", ret)
1298
644
def run_bzr_catch_errors(argv):
1299
"""Run a bzr command with parameters as described by argv.
1301
This function assumed that that UI layer is setup, that symbol deprecations
1302
are already applied, and that unicode decoding has already been performed
1305
# done here so that they're covered for every test run
1306
install_bzr_command_hooks()
1307
return exception_to_return_code(run_bzr, argv)
1310
def run_bzr_catch_user_errors(argv):
1311
"""Run brz and report user errors, but let internal errors propagate.
1313
This is used for the test suite, and might be useful for other programs
1314
that want to wrap the commandline interface.
1316
# done here so that they're covered for every test run
1317
install_bzr_command_hooks()
1319
return run_bzr(argv)
1320
except Exception as e:
1321
if (isinstance(e, (OSError, IOError))
1322
or not getattr(e, 'internal_error', True)):
1323
trace.report_exception(sys.exc_info(), sys.stderr)
1329
class HelpCommandIndex(object):
1330
"""A index for bzr help that returns commands."""
1333
self.prefix = 'commands/'
1335
def get_topics(self, topic):
1336
"""Search for topic amongst commands.
1338
:param topic: A topic to search for.
1339
:return: A list which is either empty or contains a single
1342
if topic and topic.startswith(self.prefix):
1343
topic = topic[len(self.prefix):]
1345
cmd = _get_cmd_object(topic, check_missing=False)
649
# do this here inside the exception wrappers to catch EPIPE
652
# used to handle AssertionError and KeyboardInterrupt
653
# specially here, but hopefully they're handled ok by the logger now
655
if (isinstance(e, IOError)
656
and hasattr(e, 'errno')
657
and e.errno == errno.EPIPE):
658
bzrlib.trace.note('broken pipe')
1352
class Provider(object):
1353
"""Generic class to be overriden by plugins"""
1355
def plugin_for_command(self, cmd_name):
1356
"""Takes a command and returns the information for that plugin
1358
:return: A dictionary with all the available information
1359
for the requested plugin
1361
raise NotImplementedError
1364
class ProvidersRegistry(registry.Registry):
1365
"""This registry exists to allow other providers to exist"""
1368
for key, provider in self.items():
1372
command_providers_registry = ProvidersRegistry()
661
bzrlib.trace.log_exception()
662
if os.environ.get('BZR_PDB'):
663
print '**** entering debugger'
665
pdb.post_mortem(sys.exc_traceback)
668
if __name__ == '__main__':
669
sys.exit(main(sys.argv))
added
removed
bzrlib/commands.py
