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.
27
# TODO: "--profile=cum", to change sort order. Is there any value in leaving
28
# the profile output behind so it can be interactively examined?
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(), """
32
33
from warnings import warn
33
from inspect import getdoc
37
from bzrlib.trace import mutter, note, log_error, warning
38
from bzrlib.errors import BzrError, BzrCheckError, BzrCommandError, NotBranchError
39
from bzrlib.revisionspec import RevisionSpec
40
from bzrlib import BZRDIR
45
def register_command(cmd):
46
"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.
47
156
global plugin_cmds
49
if k.startswith("cmd_"):
50
k_unsquished = _unsquish_command_name(k)
53
if not plugin_cmds.has_key(k_unsquished):
54
plugin_cmds[k_unsquished] = cmd
55
mutter('registered plugin command %s', k_unsquished)
57
log_error('Two plugins defined the same command: %r' % k)
58
log_error('Not loading the one in %r' % sys.modules[cmd.__module__])
157
return plugin_cmds.register(cmd, decorate)
61
160
def _squish_command_name(cmd):
65
164
def _unsquish_command_name(cmd):
66
assert cmd.startswith("cmd_")
67
165
return cmd[4:].replace('_','-')
70
def _parse_revision_str(revstr):
71
"""This handles a revision string -> revno.
73
This always returns a list. The list will have one element for
74
each revision specifier supplied.
76
>>> _parse_revision_str('234')
77
[<RevisionSpec_int 234>]
78
>>> _parse_revision_str('234..567')
79
[<RevisionSpec_int 234>, <RevisionSpec_int 567>]
80
>>> _parse_revision_str('..')
81
[<RevisionSpec None>, <RevisionSpec None>]
82
>>> _parse_revision_str('..234')
83
[<RevisionSpec None>, <RevisionSpec_int 234>]
84
>>> _parse_revision_str('234..')
85
[<RevisionSpec_int 234>, <RevisionSpec None>]
86
>>> _parse_revision_str('234..456..789') # Maybe this should be an error
87
[<RevisionSpec_int 234>, <RevisionSpec_int 456>, <RevisionSpec_int 789>]
88
>>> _parse_revision_str('234....789') #Error ?
89
[<RevisionSpec_int 234>, <RevisionSpec None>, <RevisionSpec_int 789>]
90
>>> _parse_revision_str('revid:test@other.com-234234')
91
[<RevisionSpec_revid revid:test@other.com-234234>]
92
>>> _parse_revision_str('revid:test@other.com-234234..revid:test@other.com-234235')
93
[<RevisionSpec_revid revid:test@other.com-234234>, <RevisionSpec_revid revid:test@other.com-234235>]
94
>>> _parse_revision_str('revid:test@other.com-234234..23')
95
[<RevisionSpec_revid revid:test@other.com-234234>, <RevisionSpec_int 23>]
96
>>> _parse_revision_str('date:2005-04-12')
97
[<RevisionSpec_date date:2005-04-12>]
98
>>> _parse_revision_str('date:2005-04-12 12:24:33')
99
[<RevisionSpec_date date:2005-04-12 12:24:33>]
100
>>> _parse_revision_str('date:2005-04-12T12:24:33')
101
[<RevisionSpec_date date:2005-04-12T12:24:33>]
102
>>> _parse_revision_str('date:2005-04-12,12:24:33')
103
[<RevisionSpec_date date:2005-04-12,12:24:33>]
104
>>> _parse_revision_str('-5..23')
105
[<RevisionSpec_int -5>, <RevisionSpec_int 23>]
106
>>> _parse_revision_str('-5')
107
[<RevisionSpec_int -5>]
108
>>> _parse_revision_str('123a')
109
Traceback (most recent call last):
111
BzrError: No namespace registered for string: '123a'
112
>>> _parse_revision_str('abc')
113
Traceback (most recent call last):
115
BzrError: No namespace registered for string: 'abc'
116
>>> _parse_revision_str('branch:../branch2')
117
[<RevisionSpec_branch branch:../branch2>]
120
old_format_re = re.compile('\d*:\d*')
121
m = old_format_re.match(revstr)
124
warning('Colon separator for revision numbers is deprecated.'
126
for rev in revstr.split(':'):
128
revs.append(RevisionSpec(int(rev)))
130
revs.append(RevisionSpec(None))
133
for x in revstr.split('..'):
135
revs.append(RevisionSpec(None))
137
# looks like a namespace:.. has happened
138
next_prefix = x + '..'
140
if next_prefix is not None:
142
revs.append(RevisionSpec(x))
144
if next_prefix is not None:
145
revs.append(RevisionSpec(next_prefix))
168
@deprecated_function(deprecated_in((2, 2, 0)))
149
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():
150
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):
152
builtins = bzrlib.builtins.__dict__
153
for name in builtins:
190
for name, obj in module.__dict__.iteritems():
154
191
if name.startswith("cmd_"):
155
real_name = _unsquish_command_name(name)
156
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))
161
219
def builtin_command_names():
162
"""Return list of builtin command names."""
163
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
return builtin_command_registry.keys()
166
228
def plugin_command_names():
229
"""Returns command names from commands registered by plugins."""
167
230
return plugin_cmds.keys()
170
def _get_cmd_dict(plugins_override=True):
171
"""Return name->class mapping for all commands."""
172
d = _builtin_commands()
174
d.update(plugin_cmds)
178
def get_all_cmds(plugins_override=True):
179
"""Return canonical name and class for all registered commands."""
180
for k, v in _get_cmd_dict(plugins_override=plugins_override).iteritems():
184
233
def get_cmd_object(cmd_name, plugins_override=True):
185
"""Return the canonical name and command class for a command.
234
"""Return the command object for a command.
188
237
If true, plugin commands can override builtins.
240
return _get_cmd_object(cmd_name, plugins_override)
242
raise errors.BzrCommandError('unknown command "%s"' % cmd_name)
245
def _get_cmd_object(cmd_name, plugins_override=True, check_missing=True):
246
"""Get a command object.
248
:param cmd_name: The name of the command.
249
:param plugins_override: Allow plugins to override builtins.
250
:param check_missing: Look up commands not found in the regular index via
251
the get_missing_command hook.
252
:return: A Command object instance
253
:raises KeyError: If no command is found.
255
# We want only 'ascii' command names, but the user may have typed
256
# in a Unicode name. In that case, they should just get a
257
# 'command not found' error later.
258
# In the future, we may actually support Unicode command names.
261
for hook in Command.hooks['get_command']:
262
cmd = hook(cmd, cmd_name)
263
if cmd is not None and not plugins_override and not cmd.plugin_name():
264
# We've found a non-plugin command, don't permit it to be
267
if cmd is None and check_missing:
268
for hook in Command.hooks['get_missing_command']:
275
# Allow plugins to extend commands
276
for hook in Command.hooks['extend_command']:
281
def _try_plugin_provider(cmd_name):
282
"""Probe for a plugin provider having cmd_name."""
284
plugin_metadata, provider = probe_for_provider(cmd_name)
285
raise errors.CommandAvailableInPlugin(cmd_name,
286
plugin_metadata, provider)
287
except errors.NoPluginAvailable:
291
def probe_for_provider(cmd_name):
292
"""Look for a provider for cmd_name.
294
:param cmd_name: The command name.
295
:return: plugin_metadata, provider for getting cmd_name.
296
:raises NoPluginAvailable: When no provider can supply the plugin.
298
# look for providers that provide this command but aren't installed
299
for provider in command_providers_registry:
301
return provider.plugin_for_command(cmd_name), provider
302
except errors.NoPluginAvailable:
304
raise errors.NoPluginAvailable(cmd_name)
307
def _get_bzr_command(cmd_or_None, cmd_name):
308
"""Get a command from bzr's core."""
310
cmd_class = builtin_command_registry.get(cmd_name)
318
def _get_external_command(cmd_or_None, cmd_name):
319
"""Lookup a command that is a shell script."""
320
# Only do external command lookups when no command is found so far.
321
if cmd_or_None is not None:
190
323
from bzrlib.externalcommand import ExternalCommand
192
cmd_name = str(cmd_name) # not unicode
194
# first look up this command under the specified name
195
cmds = _get_cmd_dict(plugins_override=plugins_override)
197
return cmds[cmd_name]()
201
# look for any command which claims this as an alias
202
for real_cmd_name, cmd_class in cmds.iteritems():
203
if cmd_name in cmd_class.aliases:
206
324
cmd_obj = ExternalCommand.find_command(cmd_name)
210
raise BzrCommandError("unknown command %r" % cmd_name)
329
def _get_plugin_command(cmd_or_None, cmd_name):
330
"""Get a command from bzr's plugins."""
332
return plugin_cmds.get(cmd_name)()
335
for key in plugin_cmds.keys():
336
info = plugin_cmds.get_info(key)
337
if cmd_name in info.aliases:
338
return plugin_cmds.get(key)()
213
342
class Command(object):
235
364
List of argument forms, marked with whether they are optional,
369
['to_location', 'from_branch?', 'file*']
371
'to_location' is required
372
'from_branch' is optional
373
'file' can be specified 0 or more times
239
List of options that may be given for this command.
376
List of options that may be given for this command. These can
377
be either strings, referring to globally-defined options,
378
or option objects. Retrieve through options().
242
381
If true, this command isn't advertised. This is typically
243
382
for commands intended for expert users.
385
Command objects will get a 'outf' attribute, which has been
386
setup to properly handle encoding of unicode strings.
387
encoding_type determines what will happen when characters cannot
389
strict - abort if we cannot decode
390
replace - put in a bogus character (typically '?')
391
exact - do not encode sys.stdout
393
NOTE: by default on Windows, sys.stdout is opened as a text
394
stream, therefore LF line-endings are converted to CRLF.
395
When a command uses encoding_type = 'exact', then
396
sys.stdout is forced to be a binary stream, and line-endings
399
:cvar hooks: An instance of CommandHooks.
248
403
takes_options = []
404
encoding_type = 'strict'
252
408
def __init__(self):
253
409
"""Construct an instance of this command."""
254
410
if self.__doc__ == Command.__doc__:
255
411
warn("No help message set for %r" % self)
258
def run_argv(self, argv):
259
"""Parse command line and run."""
260
args, opts = parse_args(argv)
412
# List of standard options directly supported
413
self.supported_std_options = []
416
def add_cleanup(self, cleanup_func, *args, **kwargs):
417
"""Register a function to call after self.run returns or raises.
419
Functions will be called in LIFO order.
421
self._operation.add_cleanup(cleanup_func, *args, **kwargs)
423
def cleanup_now(self):
424
"""Execute and empty pending cleanup functions immediately.
426
After cleanup_now all registered cleanups are forgotten. add_cleanup
427
may be called again after cleanup_now; these cleanups will be called
428
after self.run returns or raises (or when cleanup_now is next called).
430
This is useful for releasing expensive or contentious resources (such
431
as write locks) before doing further work that does not require those
432
resources (such as writing results to self.outf). Note though, that
433
as it releases all resources, this may release locks that the command
434
wants to hold, so use should be done with care.
436
self._operation.cleanup_now()
438
@deprecated_method(deprecated_in((2, 1, 0)))
439
def _maybe_expand_globs(self, file_list):
440
"""Glob expand file_list if the platform does not do that itself.
442
Not used anymore, now that the bzr command-line parser globs on
445
:return: A possibly empty list of unicode paths.
447
Introduced in bzrlib 0.18.
452
"""Return single-line grammar for this command.
454
Only describes arguments, not options.
456
s = 'bzr ' + self.name() + ' '
457
for aname in self.takes_args:
458
aname = aname.upper()
459
if aname[-1] in ['$', '+']:
460
aname = aname[:-1] + '...'
461
elif aname[-1] == '?':
462
aname = '[' + aname[:-1] + ']'
463
elif aname[-1] == '*':
464
aname = '[' + aname[:-1] + '...]'
466
s = s[:-1] # remove last space
469
def get_help_text(self, additional_see_also=None, plain=True,
470
see_also_as_links=False, verbose=True):
471
"""Return a text string with help for this command.
473
:param additional_see_also: Additional help topics to be
475
:param plain: if False, raw help (reStructuredText) is
476
returned instead of plain text.
477
:param see_also_as_links: if True, convert items in 'See also'
478
list to internal links (used by bzr_man rstx generator)
479
:param verbose: if True, display the full help, otherwise
480
leave out the descriptive sections and just display
481
usage help (e.g. Purpose, Usage, Options) with a
482
message explaining how to obtain full help.
486
raise NotImplementedError("sorry, no detailed help yet for %r" % self.name())
488
# Extract the summary (purpose) and sections out from the text
489
purpose,sections,order = self._get_help_parts(doc)
491
# If a custom usage section was provided, use it
492
if sections.has_key('Usage'):
493
usage = sections.pop('Usage')
495
usage = self._usage()
497
# The header is the purpose and usage
499
result += ':Purpose: %s\n' % purpose
500
if usage.find('\n') >= 0:
501
result += ':Usage:\n%s\n' % usage
503
result += ':Usage: %s\n' % usage
508
# XXX: optparse implicitly rewraps the help, and not always perfectly,
509
# so we get <https://bugs.launchpad.net/bzr/+bug/249908>. -- mbp
511
options = option.get_optparser(self.options()).format_option_help()
512
# XXX: According to the spec, ReST option lists actually don't support
513
# options like --1.9 so that causes syntax errors (in Sphinx at least).
514
# As that pattern always appears in the commands that break, we trap
515
# on that and then format that block of 'format' options as a literal
517
if not plain and options.find(' --1.9 ') != -1:
518
options = options.replace(' format:\n', ' format::\n\n', 1)
519
if options.startswith('Options:'):
520
result += ':' + options
521
elif options.startswith('options:'):
522
# Python 2.4 version of optparse
523
result += ':Options:' + options[len('options:'):]
529
# Add the description, indenting it 2 spaces
530
# to match the indentation of the options
531
if sections.has_key(None):
532
text = sections.pop(None)
533
text = '\n '.join(text.splitlines())
534
result += ':%s:\n %s\n\n' % ('Description',text)
536
# Add the custom sections (e.g. Examples). Note that there's no need
537
# to indent these as they must be indented already in the source.
540
if sections.has_key(label):
541
result += ':%s:\n%s\n' % (label,sections[label])
544
result += ("See bzr help %s for more details and examples.\n\n"
547
# Add the aliases, source (plug-in) and see also links, if any
549
result += ':Aliases: '
550
result += ', '.join(self.aliases) + '\n'
551
plugin_name = self.plugin_name()
552
if plugin_name is not None:
553
result += ':From: plugin "%s"\n' % plugin_name
554
see_also = self.get_see_also(additional_see_also)
556
if not plain and see_also_as_links:
558
for item in see_also:
560
# topics doesn't have an independent section
561
# so don't create a real link
562
see_also_links.append(item)
564
# Use a Sphinx link for this entry
565
link_text = ":doc:`%s <%s-help>`" % (item, item)
566
see_also_links.append(link_text)
567
see_also = see_also_links
568
result += ':See also: '
569
result += ', '.join(see_also) + '\n'
571
# If this will be rendered as plain text, convert it
573
import bzrlib.help_topics
574
result = bzrlib.help_topics.help_as_plain_text(result)
578
def _get_help_parts(text):
579
"""Split help text into a summary and named sections.
581
:return: (summary,sections,order) where summary is the top line and
582
sections is a dictionary of the rest indexed by section name.
583
order is the order the section appear in the text.
584
A section starts with a heading line of the form ":xxx:".
585
Indented text on following lines is the section value.
586
All text found outside a named section is assigned to the
587
default section which is given the key of None.
589
def save_section(sections, order, label, section):
591
if sections.has_key(label):
592
sections[label] += '\n' + section
595
sections[label] = section
597
lines = text.rstrip().splitlines()
598
summary = lines.pop(0)
601
label,section = None,''
603
if line.startswith(':') and line.endswith(':') and len(line) > 2:
604
save_section(sections, order, label, section)
605
label,section = line[1:-1],''
606
elif (label is not None) and len(line) > 1 and not line[0].isspace():
607
save_section(sections, order, label, section)
608
label,section = None,line
611
section += '\n' + line
614
save_section(sections, order, label, section)
615
return summary, sections, order
617
def get_help_topic(self):
618
"""Return the commands help topic - its name."""
621
def get_see_also(self, additional_terms=None):
622
"""Return a list of help topics that are related to this command.
624
The list is derived from the content of the _see_also attribute. Any
625
duplicates are removed and the result is in lexical order.
626
:param additional_terms: Additional help topics to cross-reference.
627
:return: A list of help topics.
629
see_also = set(getattr(self, '_see_also', []))
631
see_also.update(additional_terms)
632
return sorted(see_also)
635
"""Return dict of valid options for this command.
637
Maps from long option name to option object."""
638
r = Option.STD_OPTIONS.copy()
640
for o in self.takes_options:
641
if isinstance(o, basestring):
642
o = option.Option.OPTIONS[o]
644
if o.name in std_names:
645
self.supported_std_options.append(o.name)
648
def _setup_outf(self):
649
"""Return a file linked to stdout, which has proper encoding."""
650
self.outf = ui.ui_factory.make_output_stream(
651
encoding_type=self.encoding_type)
653
def run_argv_aliases(self, argv, alias_argv=None):
654
"""Parse the command line and run with extra aliases in alias_argv."""
655
args, opts = parse_args(self, argv, alias_argv)
657
# Process the standard options
262
658
if 'help' in opts: # e.g. bzr add --help
263
from bzrlib.help import help_on_command
264
help_on_command(self.name())
267
# check options are reasonable
268
allowed = self.takes_options
270
if oname not in allowed:
271
raise BzrCommandError("option '--%s' is not allowed for command %r"
272
% (oname, self.name()))
659
sys.stdout.write(self.get_help_text())
661
if 'usage' in opts: # e.g. bzr add --usage
662
sys.stdout.write(self.get_help_text(verbose=False))
664
trace.set_verbosity_level(option._verbosity_level)
665
if 'verbose' in self.supported_std_options:
666
opts['verbose'] = trace.is_verbose()
667
elif opts.has_key('verbose'):
669
if 'quiet' in self.supported_std_options:
670
opts['quiet'] = trace.is_quiet()
671
elif opts.has_key('quiet'):
274
674
# mix arguments and options into one dictionary
275
675
cmdargs = _match_argform(self.name(), self.takes_args, args)
306
742
return _unsquish_command_name(self.__class__.__name__)
744
def plugin_name(self):
745
"""Get the name of the plugin that provides this command.
309
def parse_spec(spec):
315
>>> parse_spec("../@")
317
>>> parse_spec("../f/@35")
319
>>> parse_spec('./@revid:john@arbash-meinel.com-20050711044610-3ca0327c6a222f67')
320
['.', 'revid:john@arbash-meinel.com-20050711044610-3ca0327c6a222f67']
325
parsed = spec.split('/@')
326
assert len(parsed) == 2
747
:return: The name of the plugin or None if the command is builtin.
749
mod_parts = self.__module__.split('.')
750
if len(mod_parts) >= 3 and mod_parts[1] == 'plugins':
331
parsed[1] = int(parsed[1])
333
pass # We can allow stuff like ./@revid:blahblahblah
337
parsed = [spec, None]
341
# list of all available options; the rhs can be either None for an
342
# option that takes no argument, or a constructor function that checks
356
'revision': _parse_revision_str,
382
def parse_args(argv):
756
class CommandHooks(Hooks):
757
"""Hooks related to Command object creation/enumeration."""
760
"""Create the default hooks.
762
These are all empty initially, because by default nothing should get
766
self.create_hook(HookPoint('extend_command',
767
"Called after creating a command object to allow modifications "
768
"such as adding or removing options, docs etc. Called with the "
769
"new bzrlib.commands.Command object.", (1, 13), None))
770
self.create_hook(HookPoint('get_command',
771
"Called when creating a single command. Called with "
772
"(cmd_or_None, command_name). get_command should either return "
773
"the cmd_or_None parameter, or a replacement Command object that "
774
"should be used for the command. Note that the Command.hooks "
775
"hooks are core infrastructure. Many users will prefer to use "
776
"bzrlib.commands.register_command or plugin_cmds.register_lazy.",
778
self.create_hook(HookPoint('get_missing_command',
779
"Called when creating a single command if no command could be "
780
"found. Called with (command_name). get_missing_command should "
781
"either return None, or a Command object to be used for the "
782
"command.", (1, 17), None))
783
self.create_hook(HookPoint('list_commands',
784
"Called when enumerating commands. Called with a set of "
785
"cmd_name strings for all the commands found so far. This set "
786
" is safe to mutate - e.g. to remove a command. "
787
"list_commands should return the updated set of command names.",
790
Command.hooks = CommandHooks()
793
def parse_args(command, argv, alias_argv=None):
383
794
"""Parse command line.
385
796
Arguments and options are parsed at this level before being passed
386
797
down to specific command handlers. This routine knows, from a
387
798
lookup table, something about the available options, what optargs
388
799
they take, and which commands will accept them.
390
>>> parse_args('--help'.split())
392
>>> parse_args('help -- --invalidcmd'.split())
393
(['help', '--invalidcmd'], {})
394
>>> parse_args('--version'.split())
395
([], {'version': True})
396
>>> parse_args('status --all'.split())
397
(['status'], {'all': True})
398
>>> parse_args('commit --message=biter'.split())
399
(['commit'], {'message': u'biter'})
400
>>> parse_args('log -r 500'.split())
401
(['log'], {'revision': [<RevisionSpec_int 500>]})
402
>>> parse_args('log -r500..600'.split())
403
(['log'], {'revision': [<RevisionSpec_int 500>, <RevisionSpec_int 600>]})
404
>>> parse_args('log -vr500..600'.split())
405
(['log'], {'verbose': True, 'revision': [<RevisionSpec_int 500>, <RevisionSpec_int 600>]})
406
>>> parse_args('log -rrevno:500..600'.split()) #the r takes an argument
407
(['log'], {'revision': [<RevisionSpec_revno revno:500>, <RevisionSpec_int 600>]})
415
if not argsover and a[0] == '-':
416
# option names must not be unicode
421
# We've received a standalone -- No more flags
424
mutter(" got option %r" % a)
426
optname, optarg = a[2:].split('=', 1)
429
if optname not in OPTIONS:
430
raise BzrError('unknown long option %r' % a)
433
if shortopt in SHORT_OPTIONS:
434
# Multi-character options must have a space to delimit
436
optname = SHORT_OPTIONS[shortopt]
438
# Single character short options, can be chained,
439
# and have their value appended to their name
441
if shortopt not in SHORT_OPTIONS:
442
# We didn't find the multi-character name, and we
443
# didn't find the single char name
444
raise BzrError('unknown short option %r' % a)
445
optname = SHORT_OPTIONS[shortopt]
448
# There are extra things on this option
449
# see if it is the value, or if it is another
451
optargfn = OPTIONS[optname]
453
# This option does not take an argument, so the
454
# next entry is another short option, pack it back
456
argv.insert(0, '-' + a[2:])
458
# This option takes an argument, so pack it
463
# XXX: Do we ever want to support this, e.g. for -r?
464
raise BzrError('repeated option %r' % a)
466
optargfn = OPTIONS[optname]
470
raise BzrError('option %r needs an argument' % a)
473
opts[optname] = optargfn(optarg)
476
raise BzrError('option %r takes no argument' % optname)
801
# TODO: make it a method of the Command?
802
parser = option.get_optparser(command.options())
803
if alias_argv is not None:
804
args = alias_argv + argv
808
options, args = parser.parse_args(args)
809
opts = dict([(k, v) for k, v in options.__dict__.iteritems() if
810
v is not option.OptionParser.DEFAULT_VALUE])
481
811
return args, opts
486
814
def _match_argform(cmd, takes_args, args):
551
896
os.remove(pfname)
899
def exception_to_return_code(the_callable, *args, **kwargs):
900
"""UI level helper for profiling and coverage.
902
This transforms exceptions into a return value of 3. As such its only
903
relevant to the UI layer, and should never be called where catching
904
exceptions may be desirable.
907
return the_callable(*args, **kwargs)
908
except (KeyboardInterrupt, Exception), e:
909
# used to handle AssertionError and KeyboardInterrupt
910
# specially here, but hopefully they're handled ok by the logger now
911
exc_info = sys.exc_info()
912
exitcode = trace.report_exception(exc_info, sys.stderr)
913
if os.environ.get('BZR_PDB'):
914
print '**** entering debugger'
917
if sys.version_info[:2] < (2, 6):
919
# pdb.post_mortem(tb)
920
# but because pdb.post_mortem gives bad results for tracebacks
921
# from inside generators, we do it manually.
922
# (http://bugs.python.org/issue4150, fixed in Python 2.6)
924
# Setup pdb on the traceback
927
p.setup(tb.tb_frame, tb)
928
# Point the debugger at the deepest frame of the stack
929
p.curindex = len(p.stack) - 1
930
p.curframe = p.stack[p.curindex][0]
931
# Start the pdb prompt.
932
p.print_stack_entry(p.stack[p.curindex])
940
def apply_lsprofiled(filename, the_callable, *args, **kwargs):
941
from bzrlib.lsprof import profile
942
ret, stats = profile(exception_to_return_code, the_callable, *args, **kwargs)
948
trace.note('Profile data written to "%s".', filename)
952
@deprecated_function(deprecated_in((2, 2, 0)))
953
def shlex_split_unicode(unsplit):
954
return cmdline.split(unsplit)
957
def get_alias(cmd, config=None):
958
"""Return an expanded alias, or None if no alias exists.
961
Command to be checked for an alias.
963
Used to specify an alternative config to use,
964
which is especially useful for testing.
965
If it is unspecified, the global config will be used.
969
config = bzrlib.config.GlobalConfig()
970
alias = config.get_alias(cmd)
972
return cmdline.split(alias)
976
def run_bzr(argv, load_plugins=load_plugins, disable_plugins=disable_plugins):
555
977
"""Execute a command.
557
This is similar to main(), but without all the trappings for
558
logging and error handling.
561
The command-line arguments, without the program name from argv[0]
563
Returns a command status or raises an exception.
979
:param argv: The command-line arguments, without the program name from
980
argv[0] These should already be decoded. All library/test code calling
981
run_bzr should be passing valid strings (don't need decoding).
982
:param load_plugins: What function to call when triggering plugin loading.
983
This function should take no arguments and cause all plugins to be
985
:param disable_plugins: What function to call when disabling plugin
986
loading. This function should take no arguments and cause all plugin
987
loading to be prohibited (so that code paths in your application that
988
know about some plugins possibly being present will fail to import
989
those plugins even if they are installed.)
990
:return: Returns a command exit code or raises an exception.
565
992
Special master options: these must come before the command because
566
993
they control how the command is interpreted.
569
996
Do not load plugin modules at all
572
1002
Only use builtin commands. (Plugins are still allowed to change
573
1003
other behaviour.)
576
Run under the Python profiler.
1006
Run under the Python hotshot profiler.
1009
Run under the Python lsprof profiler.
1012
Generate line coverage report in the specified directory.
1015
Specify the number of processes that can be run concurrently (selftest).
578
# Load all of the transport methods
579
import bzrlib.transport.local, bzrlib.transport.http
581
argv = [a.decode(bzrlib.user_encoding) for a in argv]
1017
trace.mutter("bazaar version: " + bzrlib.__version__)
1019
trace.mutter("bzr arguments: %r", argv)
583
opt_profile = opt_no_plugins = opt_builtin = False
1021
opt_lsprof = opt_profile = opt_no_plugins = opt_builtin = \
1022
opt_no_aliases = False
1023
opt_lsprof_file = opt_coverage_dir = None
585
1025
# --no-plugins is handled specially at a very early stage. We need
586
1026
# to load plugins before doing other command parsing so that they
587
1027
# can override commands, but this needs to happen first.
1031
while i < len(argv):
590
1033
if a == '--profile':
591
1034
opt_profile = True
1035
elif a == '--lsprof':
1037
elif a == '--lsprof-file':
1039
opt_lsprof_file = argv[i + 1]
592
1041
elif a == '--no-plugins':
593
1042
opt_no_plugins = True
1043
elif a == '--no-aliases':
1044
opt_no_aliases = True
594
1045
elif a == '--builtin':
595
1046
opt_builtin = True
600
if (not argv) or (argv[0] == '--help'):
601
from bzrlib.help import help
608
if argv[0] == '--version':
609
from bzrlib.builtins import show_version
1047
elif a == '--concurrency':
1048
os.environ['BZR_CONCURRENCY'] = argv[i + 1]
1050
elif a == '--coverage':
1051
opt_coverage_dir = argv[i + 1]
1053
elif a.startswith('-D'):
1054
debug.debug_flags.add(a[2:])
1059
debug.set_debug_flags_from_config()
613
1061
if not opt_no_plugins:
614
from bzrlib.plugin import load_plugins
617
cmd = str(argv.pop(0))
1068
get_cmd_object('help').run_argv_aliases([])
1071
if argv[0] == '--version':
1072
get_cmd_object('version').run_argv_aliases([])
1077
if not opt_no_aliases:
1078
alias_argv = get_alias(argv[0])
1080
user_encoding = osutils.get_user_encoding()
1081
alias_argv = [a.decode(user_encoding) for a in alias_argv]
1082
argv[0] = alias_argv.pop(0)
1085
# We want only 'ascii' command names, but the user may have typed
1086
# in a Unicode name. In that case, they should just get a
1087
# 'command not found' error later.
619
1089
cmd_obj = get_cmd_object(cmd, plugins_override=not opt_builtin)
622
ret = apply_profiled(cmd_obj.run_argv, argv)
1090
run = cmd_obj.run_argv_aliases
1091
run_argv = [argv, alias_argv]
1094
# We can be called recursively (tests for example), but we don't want
1095
# the verbosity level to propagate.
1096
saved_verbosity_level = option._verbosity_level
1097
option._verbosity_level = 0
1099
if opt_coverage_dir:
1101
'--coverage ignored, because --lsprof is in use.')
1102
ret = apply_lsprofiled(opt_lsprof_file, run, *run_argv)
1104
if opt_coverage_dir:
1106
'--coverage ignored, because --profile is in use.')
1107
ret = apply_profiled(run, *run_argv)
1108
elif opt_coverage_dir:
1109
ret = apply_coveraged(opt_coverage_dir, run, *run_argv)
1111
ret = run(*run_argv)
1114
# reset, in case we may do other commands later within the same
1115
# process. Commands that want to execute sub-commands must propagate
1116
# --verbose in their own way.
1117
if 'memory' in debug.debug_flags:
1118
trace.debug_memory('Process status after command:', short=False)
1119
option._verbosity_level = saved_verbosity_level
1122
def display_command(func):
1123
"""Decorator that suppresses pipe/interrupt errors."""
1124
def ignore_pipe(*args, **kwargs):
1126
result = func(*args, **kwargs)
1130
if getattr(e, 'errno', None) is None:
1132
if e.errno != errno.EPIPE:
1133
# Win32 raises IOError with errno=0 on a broken pipe
1134
if sys.platform != 'win32' or (e.errno not in (0, errno.EINVAL)):
1137
except KeyboardInterrupt:
1142
def install_bzr_command_hooks():
1143
"""Install the hooks to supply bzr's own commands."""
1144
if _list_bzr_commands in Command.hooks["list_commands"]:
1146
Command.hooks.install_named_hook("list_commands", _list_bzr_commands,
1148
Command.hooks.install_named_hook("get_command", _get_bzr_command,
1150
Command.hooks.install_named_hook("get_command", _get_plugin_command,
1151
"bzr plugin commands")
1152
Command.hooks.install_named_hook("get_command", _get_external_command,
1153
"bzr external command lookup")
1154
Command.hooks.install_named_hook("get_missing_command", _try_plugin_provider,
1155
"bzr plugin-provider-db check")
1159
def _specified_or_unicode_argv(argv):
1160
# For internal or testing use, argv can be passed. Otherwise, get it from
1161
# the process arguments in a unicode-safe way.
1163
return osutils.get_unicode_argv()
624
ret = cmd_obj.run_argv(argv)
630
bzrlib.trace.log_startup(argv)
631
bzrlib.ui.ui_factory = bzrlib.ui.TextUIFactory()
633
return run_bzr_catch_errors(argv[1:])
1167
# ensure all arguments are unicode strings
1169
if isinstance(a, unicode):
1172
new_argv.append(a.decode('ascii'))
1173
except UnicodeDecodeError:
1174
raise errors.BzrError("argv should be list of unicode strings.")
1178
def main(argv=None):
1179
"""Main entry point of command-line interface.
1181
Typically `bzrlib.initialize` should be called first.
1183
:param argv: list of unicode command-line arguments similar to sys.argv.
1184
argv[0] is script name usually, it will be ignored.
1185
Don't pass here sys.argv because this list contains plain strings
1186
and not unicode; pass None instead.
1188
:return: exit code of bzr command.
1190
argv = _specified_or_unicode_argv(argv)
1191
_register_builtin_commands()
1192
ret = run_bzr_catch_errors(argv)
1193
bzrlib.ui.ui_factory.log_transport_activity(
1194
display=('bytes' in debug.debug_flags))
1195
trace.mutter("return code %d", ret)
636
1199
def run_bzr_catch_errors(argv):
1200
"""Run a bzr command with parameters as described by argv.
1202
This function assumed that that UI layer is setup, that symbol deprecations
1203
are already applied, and that unicode decoding has already been performed on argv.
1205
# done here so that they're covered for every test run
1206
install_bzr_command_hooks()
1207
return exception_to_return_code(run_bzr, argv)
1210
def run_bzr_catch_user_errors(argv):
1211
"""Run bzr and report user errors, but let internal errors propagate.
1213
This is used for the test suite, and might be useful for other programs
1214
that want to wrap the commandline interface.
1216
# done here so that they're covered for every test run
1217
install_bzr_command_hooks()
641
# do this here inside the exception wrappers to catch EPIPE
643
except BzrCommandError, e:
644
# command line syntax error, etc
648
bzrlib.trace.log_exception()
650
except AssertionError, e:
651
bzrlib.trace.log_exception('assertion failed: ' + str(e))
653
except KeyboardInterrupt, e:
654
bzrlib.trace.log_exception('interrupted')
1219
return run_bzr(argv)
656
1220
except Exception, e:
658
if (isinstance(e, IOError)
659
and hasattr(e, 'errno')
660
and e.errno == errno.EPIPE):
661
bzrlib.trace.note('broken pipe')
666
bzrlib.trace.log_exception()
669
if __name__ == '__main__':
670
sys.exit(main(sys.argv))
1221
if (isinstance(e, (OSError, IOError))
1222
or not getattr(e, 'internal_error', True)):
1223
trace.report_exception(sys.exc_info(), sys.stderr)
1229
class HelpCommandIndex(object):
1230
"""A index for bzr help that returns commands."""
1233
self.prefix = 'commands/'
1235
def get_topics(self, topic):
1236
"""Search for topic amongst commands.
1238
:param topic: A topic to search for.
1239
:return: A list which is either empty or contains a single
1242
if topic and topic.startswith(self.prefix):
1243
topic = topic[len(self.prefix):]
1245
cmd = _get_cmd_object(topic, check_missing=False)
1252
class Provider(object):
1253
'''Generic class to be overriden by plugins'''
1255
def plugin_for_command(self, cmd_name):
1256
'''Takes a command and returns the information for that plugin
1258
:return: A dictionary with all the available information
1259
for the requested plugin
1261
raise NotImplementedError
1264
class ProvidersRegistry(registry.Registry):
1265
'''This registry exists to allow other providers to exist'''
1268
for key, provider in self.iteritems():
1271
command_providers_registry = ProvidersRegistry()
added
removed
bzrlib/commands.py
