1
# Copyright (C) 2004, 2005 by Canonical Ltd
1
# Copyright (C) 2005-2010 Canonical Ltd
3
3
# This program is free software; you can redistribute it and/or modify
4
4
# it under the terms of the GNU General Public License as published by
5
5
# the Free Software Foundation; either version 2 of the License, or
6
6
# (at your option) any later version.
8
8
# This program is distributed in the hope that it will be useful,
9
9
# but WITHOUT ANY WARRANTY; without even the implied warranty of
10
10
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
11
11
# GNU General Public License for more details.
13
13
# You should have received a copy of the GNU General Public License
14
14
# along with this program; if not, write to the Free Software
15
# Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
18
# TODO: probably should say which arguments are candidates for glob
19
# expansion on windows and do that at the command level.
21
# TODO: Help messages for options.
15
# Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
23
18
# TODO: Define arguments by objects, rather than just using names.
24
19
# Those objects can specify the expected type of the argument, which
25
# would help with validation and shell completion.
20
# would help with validation and shell completion. They could also provide
21
# help/explanation for that argument in a structured way.
23
# TODO: Specific "examples" property on commands for consistent formatting.
28
from bzrlib.lazy_import import lazy_import
29
lazy_import(globals(), """
31
33
from warnings import warn
32
from inspect import getdoc
36
from bzrlib.trace import mutter, note, log_error, warning
37
from bzrlib.errors import BzrError, BzrCheckError, BzrCommandError
38
from bzrlib.branch import find_branch
39
from bzrlib import BZRDIR
44
def register_command(cmd):
45
"Utility function to help register a command"
49
from bzrlib.hooks import HookPoint, Hooks
50
# Compatibility - Option used to be in commands.
51
from bzrlib.option import Option
52
from bzrlib.plugin import disable_plugins, load_plugins
53
from bzrlib import registry
54
from bzrlib.symbol_versioning import (
61
class CommandInfo(object):
62
"""Information about a command."""
64
def __init__(self, aliases):
65
"""The list of aliases for the command."""
66
self.aliases = aliases
69
def from_command(klass, command):
70
"""Factory to construct a CommandInfo from a command."""
71
return klass(command.aliases)
74
class CommandRegistry(registry.Registry):
75
"""Special registry mapping command names to command classes.
77
:ivar overridden_registry: Look in this registry for commands being
78
overridden by this registry. This can be used to tell plugin commands
79
about the builtin they're decorating.
83
registry.Registry.__init__(self)
84
self.overridden_registry = None
85
# map from aliases to the real command that implements the name
88
def get(self, command_name):
89
real_name = self._alias_dict.get(command_name, command_name)
90
return registry.Registry.get(self, real_name)
93
def _get_name(command_name):
94
if command_name.startswith("cmd_"):
95
return _unsquish_command_name(command_name)
99
def register(self, cmd, decorate=False):
100
"""Utility function to help register a command
102
:param cmd: Command subclass to register
103
:param decorate: If true, allow overriding an existing command
104
of the same name; the old command is returned by this function.
105
Otherwise it is an error to try to override an existing command.
108
k_unsquished = self._get_name(k)
110
previous = self.get(k_unsquished)
113
if self.overridden_registry:
115
previous = self.overridden_registry.get(k_unsquished)
118
info = CommandInfo.from_command(cmd)
120
registry.Registry.register(self, k_unsquished, cmd,
121
override_existing=decorate, info=info)
123
trace.warning('Two plugins defined the same command: %r' % k)
124
trace.warning('Not loading the one in %r' %
125
sys.modules[cmd.__module__])
126
trace.warning('Previously this command was registered from %r' %
127
sys.modules[previous.__module__])
128
for a in cmd.aliases:
129
self._alias_dict[a] = k_unsquished
132
def register_lazy(self, command_name, aliases, module_name):
133
"""Register a command without loading its module.
135
:param command_name: The primary name of the command.
136
:param aliases: A list of aliases for the command.
137
:module_name: The module that the command lives in.
139
key = self._get_name(command_name)
140
registry.Registry.register_lazy(self, key, module_name, command_name,
141
info=CommandInfo(aliases))
143
self._alias_dict[a] = key
146
plugin_cmds = CommandRegistry()
147
builtin_command_registry = CommandRegistry()
148
plugin_cmds.overridden_registry = builtin_command_registry
151
def register_command(cmd, decorate=False):
152
"""Register a plugin command.
154
Should generally be avoided in favor of lazy registration.
46
156
global plugin_cmds
48
if k.startswith("cmd_"):
49
k_unsquished = _unsquish_command_name(k)
52
if not plugin_cmds.has_key(k_unsquished):
53
plugin_cmds[k_unsquished] = cmd
54
mutter('registered plugin command %s', k_unsquished)
56
log_error('Two plugins defined the same command: %r' % k)
57
log_error('Not loading the one in %r' % sys.modules[cmd.__module__])
157
return plugin_cmds.register(cmd, decorate)
60
160
def _squish_command_name(cmd):
64
164
def _unsquish_command_name(cmd):
65
assert cmd.startswith("cmd_")
66
165
return cmd[4:].replace('_','-')
69
def _parse_revision_str(revstr):
70
"""This handles a revision string -> revno.
72
This always returns a list. The list will have one element for
74
It supports integers directly, but everything else it
75
defers for passing to Branch.get_revision_info()
77
>>> _parse_revision_str('234')
79
>>> _parse_revision_str('234..567')
81
>>> _parse_revision_str('..')
83
>>> _parse_revision_str('..234')
85
>>> _parse_revision_str('234..')
87
>>> _parse_revision_str('234..456..789') # Maybe this should be an error
89
>>> _parse_revision_str('234....789') # Error?
91
>>> _parse_revision_str('revid:test@other.com-234234')
92
['revid:test@other.com-234234']
93
>>> _parse_revision_str('revid:test@other.com-234234..revid:test@other.com-234235')
94
['revid:test@other.com-234234', 'revid:test@other.com-234235']
95
>>> _parse_revision_str('revid:test@other.com-234234..23')
96
['revid:test@other.com-234234', 23]
97
>>> _parse_revision_str('date:2005-04-12')
99
>>> _parse_revision_str('date:2005-04-12 12:24:33')
100
['date:2005-04-12 12:24:33']
101
>>> _parse_revision_str('date:2005-04-12T12:24:33')
102
['date:2005-04-12T12:24:33']
103
>>> _parse_revision_str('date:2005-04-12,12:24:33')
104
['date:2005-04-12,12:24:33']
105
>>> _parse_revision_str('-5..23')
107
>>> _parse_revision_str('-5')
109
>>> _parse_revision_str('123a')
111
>>> _parse_revision_str('abc')
115
old_format_re = re.compile('\d*:\d*')
116
m = old_format_re.match(revstr)
118
warning('Colon separator for revision numbers is deprecated.'
121
for rev in revstr.split(':'):
123
revs.append(int(rev))
128
for x in revstr.split('..'):
139
def get_merge_type(typestring):
140
"""Attempt to find the merge class/factory associated with a string."""
141
from merge import merge_types
143
return merge_types[typestring][0]
145
templ = '%s%%7s: %%s' % (' '*12)
146
lines = [templ % (f[0], f[1][1]) for f in merge_types.iteritems()]
147
type_list = '\n'.join(lines)
148
msg = "No known merge type %s. Supported types are:\n%s" %\
149
(typestring, type_list)
150
raise BzrCommandError(msg)
168
@deprecated_function(deprecated_in((2, 2, 0)))
153
169
def _builtin_commands():
170
"""Return a dict of {name: cmd_class} for builtin commands.
172
:deprecated: Use the builtin_command_registry registry instead
174
# return dict(name: cmd_class)
175
return dict(builtin_command_registry.items())
178
def _register_builtin_commands():
179
if builtin_command_registry.keys():
154
182
import bzrlib.builtins
183
for cmd_class in _scan_module_for_commands(bzrlib.builtins).values():
184
builtin_command_registry.register(cmd_class)
185
bzrlib.builtins._register_lazy_builtins()
188
def _scan_module_for_commands(module):
156
builtins = bzrlib.builtins.__dict__
157
for name in builtins:
190
for name, obj in module.__dict__.iteritems():
158
191
if name.startswith("cmd_"):
159
real_name = _unsquish_command_name(name)
160
r[real_name] = builtins[name]
192
real_name = _unsquish_command_name(name)
197
def _list_bzr_commands(names):
198
"""Find commands from bzr's core and plugins.
200
This is not the public interface, just the default hook called by all_command_names.
202
# to eliminate duplicates
203
names.update(builtin_command_names())
204
names.update(plugin_command_names())
208
def all_command_names():
209
"""Return a set of all command names."""
211
for hook in Command.hooks['list_commands']:
214
raise AssertionError(
215
'hook %s returned None' % Command.hooks.get_hook_name(hook))
165
219
def builtin_command_names():
166
"""Return list of builtin command names."""
167
return _builtin_commands().keys()
220
"""Return list of builtin command names.
222
Use of all_command_names() is encouraged rather than builtin_command_names
223
and/or plugin_command_names.
225
_register_builtin_commands()
226
return builtin_command_registry.keys()
170
229
def plugin_command_names():
230
"""Returns command names from commands registered by plugins."""
171
231
return plugin_cmds.keys()
174
def _get_cmd_dict(plugins_override=True):
175
"""Return name->class mapping for all commands."""
176
d = _builtin_commands()
178
d.update(plugin_cmds)
182
def get_all_cmds(plugins_override=True):
183
"""Return canonical name and class for all registered commands."""
184
for k, v in _get_cmd_dict(plugins_override=plugins_override).iteritems():
188
234
def get_cmd_object(cmd_name, plugins_override=True):
189
"""Return the canonical name and command class for a command.
235
"""Return the command object for a command.
192
238
If true, plugin commands can override builtins.
241
return _get_cmd_object(cmd_name, plugins_override)
243
raise errors.BzrCommandError('unknown command "%s"' % cmd_name)
246
def _get_cmd_object(cmd_name, plugins_override=True, check_missing=True):
247
"""Get a command object.
249
:param cmd_name: The name of the command.
250
:param plugins_override: Allow plugins to override builtins.
251
:param check_missing: Look up commands not found in the regular index via
252
the get_missing_command hook.
253
:return: A Command object instance
254
:raises KeyError: If no command is found.
256
# We want only 'ascii' command names, but the user may have typed
257
# in a Unicode name. In that case, they should just get a
258
# 'command not found' error later.
259
# In the future, we may actually support Unicode command names.
262
for hook in Command.hooks['get_command']:
263
cmd = hook(cmd, cmd_name)
264
if cmd is not None and not plugins_override and not cmd.plugin_name():
265
# We've found a non-plugin command, don't permit it to be
268
if cmd is None and check_missing:
269
for hook in Command.hooks['get_missing_command']:
276
# Allow plugins to extend commands
277
for hook in Command.hooks['extend_command']:
282
def _try_plugin_provider(cmd_name):
283
"""Probe for a plugin provider having cmd_name."""
285
plugin_metadata, provider = probe_for_provider(cmd_name)
286
raise errors.CommandAvailableInPlugin(cmd_name,
287
plugin_metadata, provider)
288
except errors.NoPluginAvailable:
292
def probe_for_provider(cmd_name):
293
"""Look for a provider for cmd_name.
295
:param cmd_name: The command name.
296
:return: plugin_metadata, provider for getting cmd_name.
297
:raises NoPluginAvailable: When no provider can supply the plugin.
299
# look for providers that provide this command but aren't installed
300
for provider in command_providers_registry:
302
return provider.plugin_for_command(cmd_name), provider
303
except errors.NoPluginAvailable:
305
raise errors.NoPluginAvailable(cmd_name)
308
def _get_bzr_command(cmd_or_None, cmd_name):
309
"""Get a command from bzr's core."""
311
cmd_class = builtin_command_registry.get(cmd_name)
319
def _get_external_command(cmd_or_None, cmd_name):
320
"""Lookup a command that is a shell script."""
321
# Only do external command lookups when no command is found so far.
322
if cmd_or_None is not None:
194
324
from bzrlib.externalcommand import ExternalCommand
196
cmd_name = str(cmd_name) # not unicode
198
# first look up this command under the specified name
199
cmds = _get_cmd_dict(plugins_override=plugins_override)
201
return cmds[cmd_name]()
205
# look for any command which claims this as an alias
206
for real_cmd_name, cmd_class in cmds.iteritems():
207
if cmd_name in cmd_class.aliases:
210
325
cmd_obj = ExternalCommand.find_command(cmd_name)
214
raise BzrCommandError("unknown command %r" % cmd_name)
330
def _get_plugin_command(cmd_or_None, cmd_name):
331
"""Get a command from bzr's plugins."""
333
return plugin_cmds.get(cmd_name)()
336
for key in plugin_cmds.keys():
337
info = plugin_cmds.get_info(key)
338
if cmd_name in info.aliases:
339
return plugin_cmds.get(key)()
217
343
class Command(object):
239
365
List of argument forms, marked with whether they are optional,
370
['to_location', 'from_branch?', 'file*']
372
'to_location' is required
373
'from_branch' is optional
374
'file' can be specified 0 or more times
243
List of options that may be given for this command.
377
List of options that may be given for this command. These can
378
be either strings, referring to globally-defined options,
379
or option objects. Retrieve through options().
246
382
If true, this command isn't advertised. This is typically
247
383
for commands intended for expert users.
386
Command objects will get a 'outf' attribute, which has been
387
setup to properly handle encoding of unicode strings.
388
encoding_type determines what will happen when characters cannot
390
strict - abort if we cannot decode
391
replace - put in a bogus character (typically '?')
392
exact - do not encode sys.stdout
394
NOTE: by default on Windows, sys.stdout is opened as a text
395
stream, therefore LF line-endings are converted to CRLF.
396
When a command uses encoding_type = 'exact', then
397
sys.stdout is forced to be a binary stream, and line-endings
400
:cvar hooks: An instance of CommandHooks.
401
:ivar __doc__: The help shown by 'bzr help command' for this command.
402
This is set by assigning explicitly to __doc__ so that -OO can
406
__doc__ = "My help goes here"
252
410
takes_options = []
411
encoding_type = 'strict'
256
415
def __init__(self):
257
416
"""Construct an instance of this command."""
258
if self.__doc__ == Command.__doc__:
259
warn("No help message set for %r" % self)
262
def run_argv(self, argv):
263
"""Parse command line and run."""
264
args, opts = parse_args(argv)
417
# List of standard options directly supported
418
self.supported_std_options = []
421
def add_cleanup(self, cleanup_func, *args, **kwargs):
422
"""Register a function to call after self.run returns or raises.
424
Functions will be called in LIFO order.
426
self._operation.add_cleanup(cleanup_func, *args, **kwargs)
428
def cleanup_now(self):
429
"""Execute and empty pending cleanup functions immediately.
431
After cleanup_now all registered cleanups are forgotten. add_cleanup
432
may be called again after cleanup_now; these cleanups will be called
433
after self.run returns or raises (or when cleanup_now is next called).
435
This is useful for releasing expensive or contentious resources (such
436
as write locks) before doing further work that does not require those
437
resources (such as writing results to self.outf). Note though, that
438
as it releases all resources, this may release locks that the command
439
wants to hold, so use should be done with care.
441
self._operation.cleanup_now()
443
@deprecated_method(deprecated_in((2, 1, 0)))
444
def _maybe_expand_globs(self, file_list):
445
"""Glob expand file_list if the platform does not do that itself.
447
Not used anymore, now that the bzr command-line parser globs on
450
:return: A possibly empty list of unicode paths.
452
Introduced in bzrlib 0.18.
457
"""Return single-line grammar for this command.
459
Only describes arguments, not options.
461
s = 'bzr ' + self.name() + ' '
462
for aname in self.takes_args:
463
aname = aname.upper()
464
if aname[-1] in ['$', '+']:
465
aname = aname[:-1] + '...'
466
elif aname[-1] == '?':
467
aname = '[' + aname[:-1] + ']'
468
elif aname[-1] == '*':
469
aname = '[' + aname[:-1] + '...]'
471
s = s[:-1] # remove last space
474
def get_help_text(self, additional_see_also=None, plain=True,
475
see_also_as_links=False, verbose=True):
476
"""Return a text string with help for this command.
478
:param additional_see_also: Additional help topics to be
480
:param plain: if False, raw help (reStructuredText) is
481
returned instead of plain text.
482
:param see_also_as_links: if True, convert items in 'See also'
483
list to internal links (used by bzr_man rstx generator)
484
:param verbose: if True, display the full help, otherwise
485
leave out the descriptive sections and just display
486
usage help (e.g. Purpose, Usage, Options) with a
487
message explaining how to obtain full help.
491
doc = "No help for this command."
493
# Extract the summary (purpose) and sections out from the text
494
purpose,sections,order = self._get_help_parts(doc)
496
# If a custom usage section was provided, use it
497
if sections.has_key('Usage'):
498
usage = sections.pop('Usage')
500
usage = self._usage()
502
# The header is the purpose and usage
504
result += ':Purpose: %s\n' % purpose
505
if usage.find('\n') >= 0:
506
result += ':Usage:\n%s\n' % usage
508
result += ':Usage: %s\n' % usage
513
# XXX: optparse implicitly rewraps the help, and not always perfectly,
514
# so we get <https://bugs.launchpad.net/bzr/+bug/249908>. -- mbp
516
options = option.get_optparser(self.options()).format_option_help()
517
# XXX: According to the spec, ReST option lists actually don't support
518
# options like --1.9 so that causes syntax errors (in Sphinx at least).
519
# As that pattern always appears in the commands that break, we trap
520
# on that and then format that block of 'format' options as a literal
522
if not plain and options.find(' --1.9 ') != -1:
523
options = options.replace(' format:\n', ' format::\n\n', 1)
524
if options.startswith('Options:'):
525
result += ':' + options
526
elif options.startswith('options:'):
527
# Python 2.4 version of optparse
528
result += ':Options:' + options[len('options:'):]
534
# Add the description, indenting it 2 spaces
535
# to match the indentation of the options
536
if sections.has_key(None):
537
text = sections.pop(None)
538
text = '\n '.join(text.splitlines())
539
result += ':%s:\n %s\n\n' % ('Description',text)
541
# Add the custom sections (e.g. Examples). Note that there's no need
542
# to indent these as they must be indented already in the source.
545
if sections.has_key(label):
546
result += ':%s:\n%s\n' % (label,sections[label])
549
result += ("See bzr help %s for more details and examples.\n\n"
552
# Add the aliases, source (plug-in) and see also links, if any
554
result += ':Aliases: '
555
result += ', '.join(self.aliases) + '\n'
556
plugin_name = self.plugin_name()
557
if plugin_name is not None:
558
result += ':From: plugin "%s"\n' % plugin_name
559
see_also = self.get_see_also(additional_see_also)
561
if not plain and see_also_as_links:
563
for item in see_also:
565
# topics doesn't have an independent section
566
# so don't create a real link
567
see_also_links.append(item)
569
# Use a Sphinx link for this entry
570
link_text = ":doc:`%s <%s-help>`" % (item, item)
571
see_also_links.append(link_text)
572
see_also = see_also_links
573
result += ':See also: '
574
result += ', '.join(see_also) + '\n'
576
# If this will be rendered as plain text, convert it
578
import bzrlib.help_topics
579
result = bzrlib.help_topics.help_as_plain_text(result)
583
def _get_help_parts(text):
584
"""Split help text into a summary and named sections.
586
:return: (summary,sections,order) where summary is the top line and
587
sections is a dictionary of the rest indexed by section name.
588
order is the order the section appear in the text.
589
A section starts with a heading line of the form ":xxx:".
590
Indented text on following lines is the section value.
591
All text found outside a named section is assigned to the
592
default section which is given the key of None.
594
def save_section(sections, order, label, section):
596
if sections.has_key(label):
597
sections[label] += '\n' + section
600
sections[label] = section
602
lines = text.rstrip().splitlines()
603
summary = lines.pop(0)
606
label,section = None,''
608
if line.startswith(':') and line.endswith(':') and len(line) > 2:
609
save_section(sections, order, label, section)
610
label,section = line[1:-1],''
611
elif (label is not None) and len(line) > 1 and not line[0].isspace():
612
save_section(sections, order, label, section)
613
label,section = None,line
616
section += '\n' + line
619
save_section(sections, order, label, section)
620
return summary, sections, order
622
def get_help_topic(self):
623
"""Return the commands help topic - its name."""
626
def get_see_also(self, additional_terms=None):
627
"""Return a list of help topics that are related to this command.
629
The list is derived from the content of the _see_also attribute. Any
630
duplicates are removed and the result is in lexical order.
631
:param additional_terms: Additional help topics to cross-reference.
632
:return: A list of help topics.
634
see_also = set(getattr(self, '_see_also', []))
636
see_also.update(additional_terms)
637
return sorted(see_also)
640
"""Return dict of valid options for this command.
642
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]
649
if o.name in std_names:
650
self.supported_std_options.append(o.name)
653
def _setup_outf(self):
654
"""Return a file linked to stdout, which has proper encoding."""
655
self.outf = ui.ui_factory.make_output_stream(
656
encoding_type=self.encoding_type)
658
def run_argv_aliases(self, argv, alias_argv=None):
659
"""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
266
663
if 'help' in opts: # e.g. bzr add --help
267
from bzrlib.help import help_on_command
268
help_on_command(self.name())
271
# check options are reasonable
272
allowed = self.takes_options
274
if oname not in allowed:
275
raise BzrCommandError("option '--%s' is not allowed for command %r"
276
% (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'):
278
679
# mix arguments and options into one dictionary
279
680
cmdargs = _match_argform(self.name(), self.takes_args, args)
310
752
return _unsquish_command_name(self.__class__.__name__)
754
def plugin_name(self):
755
"""Get the name of the plugin that provides this command.
313
def parse_spec(spec):
319
>>> parse_spec("../@")
321
>>> parse_spec("../f/@35")
323
>>> parse_spec('./@revid:john@arbash-meinel.com-20050711044610-3ca0327c6a222f67')
324
['.', 'revid:john@arbash-meinel.com-20050711044610-3ca0327c6a222f67']
329
parsed = spec.split('/@')
330
assert len(parsed) == 2
757
:return: The name of the plugin or None if the command is builtin.
759
mod_parts = self.__module__.split('.')
760
if len(mod_parts) >= 3 and mod_parts[1] == 'plugins':
335
parsed[1] = int(parsed[1])
337
pass # We can allow stuff like ./@revid:blahblahblah
341
parsed = [spec, None]
347
# list of all available options; the rhs can be either None for an
348
# option that takes no argument, or a constructor function that checks
361
'revision': _parse_revision_str,
373
'merge-type': get_merge_type,
387
def parse_args(argv):
766
class CommandHooks(Hooks):
767
"""Hooks related to Command object creation/enumeration."""
770
"""Create the default hooks.
772
These are all empty initially, because by default nothing should get
776
self.create_hook(HookPoint('extend_command',
777
"Called after creating a command object to allow modifications "
778
"such as adding or removing options, docs etc. Called with the "
779
"new bzrlib.commands.Command object.", (1, 13), None))
780
self.create_hook(HookPoint('get_command',
781
"Called when creating a single command. Called with "
782
"(cmd_or_None, command_name). get_command should either return "
783
"the cmd_or_None parameter, or a replacement Command object that "
784
"should be used for the command. Note that the Command.hooks "
785
"hooks are core infrastructure. Many users will prefer to use "
786
"bzrlib.commands.register_command or plugin_cmds.register_lazy.",
788
self.create_hook(HookPoint('get_missing_command',
789
"Called when creating a single command if no command could be "
790
"found. Called with (command_name). get_missing_command should "
791
"either return None, or a Command object to be used for the "
792
"command.", (1, 17), None))
793
self.create_hook(HookPoint('list_commands',
794
"Called when enumerating commands. Called with a set of "
795
"cmd_name strings for all the commands found so far. This set "
796
" is safe to mutate - e.g. to remove a command. "
797
"list_commands should return the updated set of command names.",
800
Command.hooks = CommandHooks()
803
def parse_args(command, argv, alias_argv=None):
388
804
"""Parse command line.
390
806
Arguments and options are parsed at this level before being passed
391
807
down to specific command handlers. This routine knows, from a
392
808
lookup table, something about the available options, what optargs
393
809
they take, and which commands will accept them.
395
>>> parse_args('--help'.split())
397
>>> parse_args('help -- --invalidcmd'.split())
398
(['help', '--invalidcmd'], {})
399
>>> parse_args('--version'.split())
400
([], {'version': True})
401
>>> parse_args('status --all'.split())
402
(['status'], {'all': True})
403
>>> parse_args('commit --message=biter'.split())
404
(['commit'], {'message': u'biter'})
405
>>> parse_args('log -r 500'.split())
406
(['log'], {'revision': [500]})
407
>>> parse_args('log -r500..600'.split())
408
(['log'], {'revision': [500, 600]})
409
>>> parse_args('log -vr500..600'.split())
410
(['log'], {'verbose': True, 'revision': [500, 600]})
411
>>> parse_args('log -rv500..600'.split()) #the r takes an argument
412
(['log'], {'revision': ['v500', 600]})
420
if not argsover and a[0] == '-':
421
# option names must not be unicode
426
# We've received a standalone -- No more flags
429
mutter(" got option %r" % a)
431
optname, optarg = a[2:].split('=', 1)
434
if optname not in OPTIONS:
435
raise BzrError('unknown long option %r' % a)
438
if shortopt in SHORT_OPTIONS:
439
# Multi-character options must have a space to delimit
441
optname = SHORT_OPTIONS[shortopt]
443
# Single character short options, can be chained,
444
# and have their value appended to their name
446
if shortopt not in SHORT_OPTIONS:
447
# We didn't find the multi-character name, and we
448
# didn't find the single char name
449
raise BzrError('unknown short option %r' % a)
450
optname = SHORT_OPTIONS[shortopt]
453
# There are extra things on this option
454
# see if it is the value, or if it is another
456
optargfn = OPTIONS[optname]
458
# This option does not take an argument, so the
459
# next entry is another short option, pack it back
461
argv.insert(0, '-' + a[2:])
463
# This option takes an argument, so pack it
468
# XXX: Do we ever want to support this, e.g. for -r?
469
raise BzrError('repeated option %r' % a)
471
optargfn = OPTIONS[optname]
475
raise BzrError('option %r needs an argument' % a)
478
opts[optname] = optargfn(optarg)
481
raise BzrError('option %r takes no argument' % optname)
811
# TODO: make it a method of the Command?
812
parser = option.get_optparser(command.options())
813
if alias_argv is not None:
814
args = alias_argv + argv
818
# for python 2.5 and later, optparse raises this exception if a non-ascii
819
# option name is given. See http://bugs.python.org/issue2931
821
options, args = parser.parse_args(args)
822
except UnicodeEncodeError,e:
823
raise errors.BzrCommandError('Only ASCII permitted in option names')
825
opts = dict([(k, v) for k, v in options.__dict__.iteritems() if
826
v is not option.OptionParser.DEFAULT_VALUE])
486
827
return args, opts
491
830
def _match_argform(cmd, takes_args, args):
505
844
argdict[argname + '_list'] = None
506
845
elif ap[-1] == '+':
508
raise BzrCommandError("command %r needs one or more %s"
509
% (cmd, argname.upper()))
847
raise errors.BzrCommandError("command %r needs one or more %s"
848
% (cmd, argname.upper()))
511
850
argdict[argname + '_list'] = args[:]
513
852
elif ap[-1] == '$': # all but one
514
853
if len(args) < 2:
515
raise BzrCommandError("command %r needs one or more %s"
516
% (cmd, argname.upper()))
854
raise errors.BzrCommandError("command %r needs one or more %s"
855
% (cmd, argname.upper()))
517
856
argdict[argname + '_list'] = args[:-1]
520
859
# just a plain arg
523
raise BzrCommandError("command %r requires argument %s"
524
% (cmd, argname.upper()))
862
raise errors.BzrCommandError("command %r requires argument %s"
863
% (cmd, argname.upper()))
526
865
argdict[argname] = args.pop(0)
529
raise BzrCommandError("extra argument to command %s: %s"
868
raise errors.BzrCommandError("extra argument to command %s: %s"
873
def apply_coveraged(dirname, the_callable, *args, **kwargs):
874
# Cannot use "import trace", as that would import bzrlib.trace instead of
875
# the standard library's trace.
876
trace = __import__('trace')
878
tracer = trace.Trace(count=1, trace=0)
879
sys.settrace(tracer.globaltrace)
880
threading.settrace(tracer.globaltrace)
883
return exception_to_return_code(the_callable, *args, **kwargs)
886
results = tracer.results()
887
results.write_results(show_missing=1, summary=False,
536
891
def apply_profiled(the_callable, *args, **kwargs):
539
895
pffileno, pfname = tempfile.mkstemp()
541
897
prof = hotshot.Profile(pfname)
543
ret = prof.runcall(the_callable, *args, **kwargs) or 0
899
ret = prof.runcall(exception_to_return_code, the_callable, *args,
548
903
stats = hotshot.stats.load(pfname)
550
stats.sort_stats('time')
905
stats.sort_stats('cum') # 'time'
551
906
## XXX: Might like to write to stderr or the trace file instead but
552
907
## print_stats seems hardcoded to stdout
553
908
stats.print_stats(20)
557
911
os.close(pffileno)
558
912
os.remove(pfname)
915
def exception_to_return_code(the_callable, *args, **kwargs):
916
"""UI level helper for profiling and coverage.
918
This transforms exceptions into a return value of 3. As such its only
919
relevant to the UI layer, and should never be called where catching
920
exceptions may be desirable.
923
return the_callable(*args, **kwargs)
924
except (KeyboardInterrupt, Exception), e:
925
# used to handle AssertionError and KeyboardInterrupt
926
# specially here, but hopefully they're handled ok by the logger now
927
exc_info = sys.exc_info()
928
exitcode = trace.report_exception(exc_info, sys.stderr)
929
if os.environ.get('BZR_PDB'):
930
print '**** entering debugger'
933
if sys.version_info[:2] < (2, 6):
935
# pdb.post_mortem(tb)
936
# but because pdb.post_mortem gives bad results for tracebacks
937
# from inside generators, we do it manually.
938
# (http://bugs.python.org/issue4150, fixed in Python 2.6)
940
# Setup pdb on the traceback
943
p.setup(tb.tb_frame, tb)
944
# Point the debugger at the deepest frame of the stack
945
p.curindex = len(p.stack) - 1
946
p.curframe = p.stack[p.curindex][0]
947
# Start the pdb prompt.
948
p.print_stack_entry(p.stack[p.curindex])
956
def apply_lsprofiled(filename, the_callable, *args, **kwargs):
957
from bzrlib.lsprof import profile
958
ret, stats = profile(exception_to_return_code, the_callable, *args, **kwargs)
964
trace.note('Profile data written to "%s".', filename)
968
@deprecated_function(deprecated_in((2, 2, 0)))
969
def shlex_split_unicode(unsplit):
970
return cmdline.split(unsplit)
973
def get_alias(cmd, config=None):
974
"""Return an expanded alias, or None if no alias exists.
977
Command to be checked for an alias.
979
Used to specify an alternative config to use,
980
which is especially useful for testing.
981
If it is unspecified, the global config will be used.
985
config = bzrlib.config.GlobalConfig()
986
alias = config.get_alias(cmd)
988
return cmdline.split(alias)
992
def run_bzr(argv, load_plugins=load_plugins, disable_plugins=disable_plugins):
562
993
"""Execute a command.
564
This is similar to main(), but without all the trappings for
565
logging and error handling.
568
The command-line arguments, without the program name from argv[0]
570
Returns a command status or raises an exception.
995
:param argv: The command-line arguments, without the program name from
996
argv[0] These should already be decoded. All library/test code calling
997
run_bzr should be passing valid strings (don't need decoding).
998
:param load_plugins: What function to call when triggering plugin loading.
999
This function should take no arguments and cause all plugins to be
1001
:param disable_plugins: What function to call when disabling plugin
1002
loading. This function should take no arguments and cause all plugin
1003
loading to be prohibited (so that code paths in your application that
1004
know about some plugins possibly being present will fail to import
1005
those plugins even if they are installed.)
1006
:return: Returns a command exit code or raises an exception.
572
1008
Special master options: these must come before the command because
573
1009
they control how the command is interpreted.
576
1012
Do not load plugin modules at all
1015
Do not allow aliases
579
1018
Only use builtin commands. (Plugins are still allowed to change
580
1019
other behaviour.)
583
Run under the Python profiler.
1022
Run under the Python hotshot profiler.
1025
Run under the Python lsprof profiler.
1028
Generate line coverage report in the specified directory.
1031
Specify the number of processes that can be run concurrently (selftest).
586
argv = [a.decode(bzrlib.user_encoding) for a in argv]
1033
trace.mutter("bazaar version: " + bzrlib.__version__)
1035
trace.mutter("bzr arguments: %r", argv)
588
opt_profile = opt_no_plugins = opt_builtin = False
1037
opt_lsprof = opt_profile = opt_no_plugins = opt_builtin = \
1038
opt_no_aliases = False
1039
opt_lsprof_file = opt_coverage_dir = None
590
1041
# --no-plugins is handled specially at a very early stage. We need
591
1042
# to load plugins before doing other command parsing so that they
592
1043
# can override commands, but this needs to happen first.
1047
while i < len(argv):
595
1049
if a == '--profile':
596
1050
opt_profile = True
1051
elif a == '--lsprof':
1053
elif a == '--lsprof-file':
1055
opt_lsprof_file = argv[i + 1]
597
1057
elif a == '--no-plugins':
598
1058
opt_no_plugins = True
1059
elif a == '--no-aliases':
1060
opt_no_aliases = True
599
1061
elif a == '--builtin':
600
1062
opt_builtin = True
605
if (not argv) or (argv[0] == '--help'):
606
from bzrlib.help import help
613
if argv[0] == '--version':
614
from bzrlib.builtins import show_version
1063
elif a == '--concurrency':
1064
os.environ['BZR_CONCURRENCY'] = argv[i + 1]
1066
elif a == '--coverage':
1067
opt_coverage_dir = argv[i + 1]
1069
elif a == '--profile-imports':
1070
pass # already handled in startup script Bug #588277
1071
elif a.startswith('-D'):
1072
debug.debug_flags.add(a[2:])
1077
debug.set_debug_flags_from_config()
618
1079
if not opt_no_plugins:
619
from bzrlib.plugin import load_plugins
622
cmd = str(argv.pop(0))
1086
get_cmd_object('help').run_argv_aliases([])
1089
if argv[0] == '--version':
1090
get_cmd_object('version').run_argv_aliases([])
1095
if not opt_no_aliases:
1096
alias_argv = get_alias(argv[0])
1098
argv[0] = alias_argv.pop(0)
624
1101
cmd_obj = get_cmd_object(cmd, plugins_override=not opt_builtin)
627
ret = apply_profiled(cmd_obj.run_argv, argv)
629
ret = cmd_obj.run_argv(argv)
635
bzrlib.trace.log_startup(argv)
636
bzrlib.ui.ui_factory = bzrlib.ui.TextUIFactory()
1102
run = cmd_obj.run_argv_aliases
1103
run_argv = [argv, alias_argv]
1106
# We can be called recursively (tests for example), but we don't want
1107
# the verbosity level to propagate.
1108
saved_verbosity_level = option._verbosity_level
1109
option._verbosity_level = 0
1111
if opt_coverage_dir:
1113
'--coverage ignored, because --lsprof is in use.')
1114
ret = apply_lsprofiled(opt_lsprof_file, run, *run_argv)
1116
if opt_coverage_dir:
1118
'--coverage ignored, because --profile is in use.')
1119
ret = apply_profiled(run, *run_argv)
1120
elif opt_coverage_dir:
1121
ret = apply_coveraged(opt_coverage_dir, run, *run_argv)
1123
ret = run(*run_argv)
1126
# reset, in case we may do other commands later within the same
1127
# process. Commands that want to execute sub-commands must propagate
1128
# --verbose in their own way.
1129
if 'memory' in debug.debug_flags:
1130
trace.debug_memory('Process status after command:', short=False)
1131
option._verbosity_level = saved_verbosity_level
1134
def display_command(func):
1135
"""Decorator that suppresses pipe/interrupt errors."""
1136
def ignore_pipe(*args, **kwargs):
640
return run_bzr(argv[1:])
642
# do this here inside the exception wrappers to catch EPIPE
1138
result = func(*args, **kwargs)
643
1139
sys.stdout.flush()
644
except BzrCommandError, e:
645
# command line syntax error, etc
649
bzrlib.trace.log_exception()
651
except AssertionError, e:
652
bzrlib.trace.log_exception('assertion failed: ' + str(e))
654
except KeyboardInterrupt, e:
655
bzrlib.trace.note('interrupted')
1142
if getattr(e, 'errno', None) is None:
1144
if e.errno != errno.EPIPE:
1145
# Win32 raises IOError with errno=0 on a broken pipe
1146
if sys.platform != 'win32' or (e.errno not in (0, errno.EINVAL)):
1149
except KeyboardInterrupt:
1154
def install_bzr_command_hooks():
1155
"""Install the hooks to supply bzr's own commands."""
1156
if _list_bzr_commands in Command.hooks["list_commands"]:
1158
Command.hooks.install_named_hook("list_commands", _list_bzr_commands,
1160
Command.hooks.install_named_hook("get_command", _get_bzr_command,
1162
Command.hooks.install_named_hook("get_command", _get_plugin_command,
1163
"bzr plugin commands")
1164
Command.hooks.install_named_hook("get_command", _get_external_command,
1165
"bzr external command lookup")
1166
Command.hooks.install_named_hook("get_missing_command", _try_plugin_provider,
1167
"bzr plugin-provider-db check")
1171
def _specified_or_unicode_argv(argv):
1172
# For internal or testing use, argv can be passed. Otherwise, get it from
1173
# the process arguments in a unicode-safe way.
1175
return osutils.get_unicode_argv()
1179
# ensure all arguments are unicode strings
1181
if isinstance(a, unicode):
1184
new_argv.append(a.decode('ascii'))
1185
except UnicodeDecodeError:
1186
raise errors.BzrError("argv should be list of unicode strings.")
1190
def main(argv=None):
1191
"""Main entry point of command-line interface.
1193
Typically `bzrlib.initialize` should be called first.
1195
:param argv: list of unicode command-line arguments similar to sys.argv.
1196
argv[0] is script name usually, it will be ignored.
1197
Don't pass here sys.argv because this list contains plain strings
1198
and not unicode; pass None instead.
1200
:return: exit code of bzr command.
1202
argv = _specified_or_unicode_argv(argv)
1203
_register_builtin_commands()
1204
ret = run_bzr_catch_errors(argv)
1205
bzrlib.ui.ui_factory.log_transport_activity(
1206
display=('bytes' in debug.debug_flags))
1207
trace.mutter("return code %d", ret)
1211
def run_bzr_catch_errors(argv):
1212
"""Run a bzr command with parameters as described by argv.
1214
This function assumed that that UI layer is setup, that symbol deprecations
1215
are already applied, and that unicode decoding has already been performed on argv.
1217
# done here so that they're covered for every test run
1218
install_bzr_command_hooks()
1219
return exception_to_return_code(run_bzr, argv)
1222
def run_bzr_catch_user_errors(argv):
1223
"""Run bzr and report user errors, but let internal errors propagate.
1225
This is used for the test suite, and might be useful for other programs
1226
that want to wrap the commandline interface.
1228
# done here so that they're covered for every test run
1229
install_bzr_command_hooks()
1231
return run_bzr(argv)
657
1232
except Exception, e:
659
if (isinstance(e, IOError)
660
and hasattr(e, 'errno')
661
and e.errno == errno.EPIPE):
662
bzrlib.trace.note('broken pipe')
665
bzrlib.trace.log_exception()
669
if __name__ == '__main__':
670
sys.exit(main(sys.argv))
1233
if (isinstance(e, (OSError, IOError))
1234
or not getattr(e, 'internal_error', True)):
1235
trace.report_exception(sys.exc_info(), sys.stderr)
1241
class HelpCommandIndex(object):
1242
"""A index for bzr help that returns commands."""
1245
self.prefix = 'commands/'
1247
def get_topics(self, topic):
1248
"""Search for topic amongst commands.
1250
:param topic: A topic to search for.
1251
:return: A list which is either empty or contains a single
1254
if topic and topic.startswith(self.prefix):
1255
topic = topic[len(self.prefix):]
1257
cmd = _get_cmd_object(topic, check_missing=False)
1264
class Provider(object):
1265
'''Generic class to be overriden by plugins'''
1267
def plugin_for_command(self, cmd_name):
1268
'''Takes a command and returns the information for that plugin
1270
:return: A dictionary with all the available information
1271
for the requested plugin
1273
raise NotImplementedError
1276
class ProvidersRegistry(registry.Registry):
1277
'''This registry exists to allow other providers to exist'''
1280
for key, provider in self.iteritems():
1283
command_providers_registry = ProvidersRegistry()
added
removed
bzrlib/commands.py
