22
26
# TODO: Specific "examples" property on commands for consistent formatting.
28
# TODO: "--profile=cum", to change sort order. Is there any value in leaving
29
# the profile output behind so it can be interactively examined?
34
from .lazy_import import lazy_import
34
from bzrlib.lazy_import import lazy_import
35
35
lazy_import(globals(), """
38
from warnings import warn
47
from .hooks import Hooks
48
from .i18n import gettext
49
# Compatibility - Option used to be in commands.
50
from .option import Option
51
from .plugin import disable_plugins, load_plugins, plugin_name
52
from . import errors, registry
55
class BzrOptionError(errors.CommandError):
57
_fmt = "Error in command line options"
60
class CommandAvailableInPlugin(Exception):
62
internal_error = False
64
def __init__(self, cmd_name, plugin_metadata, provider):
66
self.plugin_metadata = plugin_metadata
67
self.cmd_name = cmd_name
68
self.provider = provider
72
_fmt = ('"%s" is not a standard brz command. \n'
73
'However, the following official plugin provides this command: %s\n'
74
'You can install it by going to: %s'
75
% (self.cmd_name, self.plugin_metadata['name'],
76
self.plugin_metadata['url']))
81
class CommandInfo(object):
82
"""Information about a command."""
84
def __init__(self, aliases):
85
"""The list of aliases for the command."""
86
self.aliases = aliases
89
def from_command(klass, command):
90
"""Factory to construct a CommandInfo from a command."""
91
return klass(command.aliases)
94
class CommandRegistry(registry.Registry):
95
"""Special registry mapping command names to command classes.
97
:ivar overridden_registry: Look in this registry for commands being
98
overridden by this registry. This can be used to tell plugin commands
99
about the builtin they're decorating.
103
registry.Registry.__init__(self)
104
self.overridden_registry = None
105
# map from aliases to the real command that implements the name
106
self._alias_dict = {}
108
def get(self, command_name):
109
real_name = self._alias_dict.get(command_name, command_name)
110
return registry.Registry.get(self, real_name)
113
def _get_name(command_name):
114
if command_name.startswith("cmd_"):
115
return _unsquish_command_name(command_name)
119
def register(self, cmd, decorate=False):
120
"""Utility function to help register a command
122
:param cmd: Command subclass to register
123
:param decorate: If true, allow overriding an existing command
124
of the same name; the old command is returned by this function.
125
Otherwise it is an error to try to override an existing command.
128
k_unsquished = self._get_name(k)
130
previous = self.get(k_unsquished)
133
if self.overridden_registry:
135
previous = self.overridden_registry.get(k_unsquished)
138
info = CommandInfo.from_command(cmd)
140
registry.Registry.register(self, k_unsquished, cmd,
141
override_existing=decorate, info=info)
143
trace.warning('Two plugins defined the same command: %r' % k)
144
trace.warning('Not loading the one in %r' %
145
sys.modules[cmd.__module__])
146
trace.warning('Previously this command was registered from %r' %
147
sys.modules[previous.__module__])
148
for a in cmd.aliases:
149
self._alias_dict[a] = k_unsquished
152
def register_lazy(self, command_name, aliases, module_name):
153
"""Register a command without loading its module.
155
:param command_name: The primary name of the command.
156
:param aliases: A list of aliases for the command.
157
:module_name: The module that the command lives in.
159
key = self._get_name(command_name)
160
registry.Registry.register_lazy(self, key, module_name, command_name,
161
info=CommandInfo(aliases))
163
self._alias_dict[a] = key
166
plugin_cmds = CommandRegistry()
167
builtin_command_registry = CommandRegistry()
168
plugin_cmds.overridden_registry = builtin_command_registry
50
from bzrlib.symbol_versioning import (
57
from bzrlib.option import Option
171
63
def register_command(cmd, decorate=False):
172
"""Register a plugin command.
64
"""Utility function to help register a command
174
Should generally be avoided in favor of lazy registration.
66
:param cmd: Command subclass to register
67
:param decorate: If true, allow overriding an existing command
68
of the same name; the old command is returned by this function.
69
Otherwise it is an error to try to override an existing command.
176
71
global plugin_cmds
177
return plugin_cmds.register(cmd, decorate)
73
if k.startswith("cmd_"):
74
k_unsquished = _unsquish_command_name(k)
77
if k_unsquished not in plugin_cmds:
78
plugin_cmds[k_unsquished] = cmd
79
## trace.mutter('registered plugin command %s', k_unsquished)
80
if decorate and k_unsquished in builtin_command_names():
81
return _builtin_commands()[k_unsquished]
83
result = plugin_cmds[k_unsquished]
84
plugin_cmds[k_unsquished] = cmd
87
trace.log_error('Two plugins defined the same command: %r' % k)
88
trace.log_error('Not loading the one in %r' % sys.modules[cmd.__module__])
180
91
def _squish_command_name(cmd):
184
95
def _unsquish_command_name(cmd):
185
return cmd[4:].replace('_', '-')
188
def _register_builtin_commands():
189
if builtin_command_registry.keys():
192
import breezy.builtins
193
for cmd_class in _scan_module_for_commands(breezy.builtins):
194
builtin_command_registry.register(cmd_class)
195
breezy.builtins._register_lazy_builtins()
198
def _scan_module_for_commands(module):
199
module_dict = module.__dict__
200
for name in module_dict:
96
assert cmd.startswith("cmd_")
97
return cmd[4:].replace('_','-')
100
def _builtin_commands():
101
import bzrlib.builtins
103
builtins = bzrlib.builtins.__dict__
104
for name in builtins:
201
105
if name.startswith("cmd_"):
202
yield module_dict[name]
205
def _list_bzr_commands(names):
206
"""Find commands from bzr's core and plugins.
208
This is not the public interface, just the default hook called by
211
# to eliminate duplicates
212
names.update(builtin_command_names())
213
names.update(plugin_command_names())
217
def all_command_names():
218
"""Return a set of all command names."""
220
for hook in Command.hooks['list_commands']:
223
raise AssertionError(
224
'hook %s returned None' % Command.hooks.get_hook_name(hook))
106
real_name = _unsquish_command_name(name)
107
r[real_name] = builtins[name]
228
111
def builtin_command_names():
229
"""Return list of builtin command names.
231
Use of all_command_names() is encouraged rather than builtin_command_names
232
and/or plugin_command_names.
234
_register_builtin_commands()
235
return builtin_command_registry.keys()
112
"""Return list of builtin command names."""
113
return _builtin_commands().keys()
238
116
def plugin_command_names():
239
"""Returns command names from commands registered by plugins."""
240
117
return plugin_cmds.keys()
243
# Overrides for common mispellings that heuristics get wrong
245
'ic': {'ci': 0}, # heuristic finds nick
249
def guess_command(cmd_name):
250
"""Guess what command a user typoed.
252
:param cmd_name: Command to search for
253
:return: None if no command was found, name of a command otherwise
256
for name in all_command_names():
258
cmd = get_cmd_object(name)
259
names.update(cmd.aliases)
260
# candidate: modified levenshtein distance against cmd_name.
263
for name in sorted(names):
264
matcher = patiencediff.PatienceSequenceMatcher(None, cmd_name, name)
266
opcodes = matcher.get_opcodes()
267
for opcode, l1, l2, r1, r2 in opcodes:
268
if opcode == 'delete':
270
elif opcode == 'replace':
271
distance += max(l2 - l1, r2 - l1)
272
elif opcode == 'insert':
274
elif opcode == 'equal':
275
# Score equal ranges lower, making similar commands of equal
276
# length closer than arbitrary same length commands.
277
distance -= 0.1 * (l2 - l1)
278
costs[name] = distance
279
costs.update(_GUESS_OVERRIDES.get(cmd_name, {}))
280
costs = sorted((costs[key], key) for key in costs)
285
candidate = costs[0][1]
120
def _get_cmd_dict(plugins_override=True):
121
"""Return name->class mapping for all commands."""
122
d = _builtin_commands()
124
d.update(plugin_cmds)
128
def get_all_cmds(plugins_override=True):
129
"""Return canonical name and class for all registered commands."""
130
for k, v in _get_cmd_dict(plugins_override=plugins_override).iteritems():
289
134
def get_cmd_object(cmd_name, plugins_override=True):
290
"""Return the command object for a command.
135
"""Return the canonical name and command class for a command.
293
138
If true, plugin commands can override builtins.
296
return _get_cmd_object(cmd_name, plugins_override)
298
# No command found, see if this was a typo
299
candidate = guess_command(cmd_name)
300
if candidate is not None:
301
raise errors.CommandError(
302
gettext('unknown command "%s". Perhaps you meant "%s"')
303
% (cmd_name, candidate))
304
raise errors.CommandError(gettext('unknown command "%s"')
308
def _get_cmd_object(cmd_name, plugins_override=True, check_missing=True):
309
"""Get a command object.
311
:param cmd_name: The name of the command.
312
:param plugins_override: Allow plugins to override builtins.
313
:param check_missing: Look up commands not found in the regular index via
314
the get_missing_command hook.
315
:return: A Command object instance
316
:raises KeyError: If no command is found.
140
from bzrlib.externalcommand import ExternalCommand
318
142
# We want only 'ascii' command names, but the user may have typed
319
143
# in a Unicode name. In that case, they should just get a
320
144
# 'command not found' error later.
321
145
# In the future, we may actually support Unicode command names.
324
for hook in Command.hooks['get_command']:
325
cmd = hook(cmd, cmd_name)
326
if cmd is not None and not plugins_override and not cmd.plugin_name():
327
# We've found a non-plugin command, don't permit it to be
330
if cmd is None and check_missing:
331
for hook in Command.hooks['get_missing_command']:
338
# Allow plugins to extend commands
339
for hook in Command.hooks['extend_command']:
341
if getattr(cmd, 'invoked_as', None) is None:
342
cmd.invoked_as = cmd_name
346
class NoPluginAvailable(errors.BzrError):
350
def _try_plugin_provider(cmd_name):
351
"""Probe for a plugin provider having cmd_name."""
353
plugin_metadata, provider = probe_for_provider(cmd_name)
354
raise CommandAvailableInPlugin(cmd_name, plugin_metadata, provider)
355
except NoPluginAvailable:
359
def probe_for_provider(cmd_name):
360
"""Look for a provider for cmd_name.
362
:param cmd_name: The command name.
363
:return: plugin_metadata, provider for getting cmd_name.
364
:raises NoPluginAvailable: When no provider can supply the plugin.
366
# look for providers that provide this command but aren't installed
367
for provider in command_providers_registry:
369
return provider.plugin_for_command(cmd_name), provider
370
except NoPluginAvailable:
372
raise NoPluginAvailable(cmd_name)
375
def _get_bzr_command(cmd_or_None, cmd_name):
376
"""Get a command from bzr's core."""
378
cmd_class = builtin_command_registry.get(cmd_name)
147
# first look up this command under the specified name
148
cmds = _get_cmd_dict(plugins_override=plugins_override)
150
return cmds[cmd_name]()
386
def _get_external_command(cmd_or_None, cmd_name):
387
"""Lookup a command that is a shell script."""
388
# Only do external command lookups when no command is found so far.
389
if cmd_or_None is not None:
391
from breezy.externalcommand import ExternalCommand
154
# look for any command which claims this as an alias
155
for real_cmd_name, cmd_class in cmds.iteritems():
156
if cmd_name in cmd_class.aliases:
392
159
cmd_obj = ExternalCommand.find_command(cmd_name)
397
def _get_plugin_command(cmd_or_None, cmd_name):
398
"""Get a command from brz's plugins."""
400
return plugin_cmds.get(cmd_name)()
403
for key in plugin_cmds.keys():
404
info = plugin_cmds.get_info(key)
405
if cmd_name in info.aliases:
406
return plugin_cmds.get(key)()
163
raise errors.BzrCommandError('unknown command "%s"' % cmd_name)
410
166
class Command(object):
411
167
"""Base class for commands.
413
Commands are the heart of the command-line brz interface.
169
Commands are the heart of the command-line bzr interface.
415
171
The command object mostly handles the mapping of command-line
416
parameters into one or more breezy operations, and of the results
172
parameters into one or more bzrlib operations, and of the results
417
173
into textual output.
419
175
Commands normally don't have any state. All their arguments are
425
181
summary, then a complete description of the command. A grammar
426
182
description will be inserted.
428
:cvar aliases: Other accepted names for this command.
430
:cvar takes_args: List of argument forms, marked with whether they are
431
optional, repeated, etc. Examples::
433
['to_location', 'from_branch?', 'file*']
435
* 'to_location' is required
436
* 'from_branch' is optional
437
* 'file' can be specified 0 or more times
439
:cvar takes_options: List of options that may be given for this command.
440
These can be either strings, referring to globally-defined options, or
441
option objects. Retrieve through options().
443
:cvar hidden: If true, this command isn't advertised. This is typically
185
Other accepted names for this command.
188
List of argument forms, marked with whether they are optional,
193
['to_location', 'from_branch?', 'file*']
195
'to_location' is required
196
'from_branch' is optional
197
'file' can be specified 0 or more times
200
List of options that may be given for this command. These can
201
be either strings, referring to globally-defined options,
202
or option objects. Retrieve through options().
205
If true, this command isn't advertised. This is typically
444
206
for commands intended for expert users.
446
:cvar encoding_type: Command objects will get a 'outf' attribute, which has
447
been setup to properly handle encoding of unicode strings.
448
encoding_type determines what will happen when characters cannot be
451
* strict - abort if we cannot decode
452
* replace - put in a bogus character (typically '?')
453
* exact - do not encode sys.stdout
455
NOTE: by default on Windows, sys.stdout is opened as a text stream,
456
therefore LF line-endings are converted to CRLF. When a command uses
457
encoding_type = 'exact', then sys.stdout is forced to be a binary
458
stream, and line-endings will not mangled.
461
A string indicating the real name under which this command was
462
invoked, before expansion of aliases.
463
(This may be None if the command was constructed and run in-process.)
465
:cvar hooks: An instance of CommandHooks.
467
:cvar __doc__: The help shown by 'brz help command' for this command.
468
This is set by assigning explicitly to __doc__ so that -OO can
472
__doc__ = "My help goes here"
209
Command objects will get a 'outf' attribute, which has been
210
setup to properly handle encoding of unicode strings.
211
encoding_type determines what will happen when characters cannot
213
strict - abort if we cannot decode
214
replace - put in a bogus character (typically '?')
215
exact - do not encode sys.stdout
217
NOTE: by default on Windows, sys.stdout is opened as a text
218
stream, therefore LF line-endings are converted to CRLF.
219
When a command uses encoding_type = 'exact', then
220
sys.stdout is forced to be a binary stream, and line-endings
476
226
takes_options = []
477
227
encoding_type = 'strict'
483
231
def __init__(self):
484
232
"""Construct an instance of this command."""
485
# List of standard options directly supported
486
self.supported_std_options = []
489
def add_cleanup(self, cleanup_func, *args, **kwargs):
490
"""Register a function to call after self.run returns or raises.
492
Functions will be called in LIFO order.
494
self._exit_stack.callback(cleanup_func, *args, **kwargs)
496
def cleanup_now(self):
497
"""Execute and empty pending cleanup functions immediately.
499
After cleanup_now all registered cleanups are forgotten. add_cleanup
500
may be called again after cleanup_now; these cleanups will be called
501
after self.run returns or raises (or when cleanup_now is next called).
503
This is useful for releasing expensive or contentious resources (such
504
as write locks) before doing further work that does not require those
505
resources (such as writing results to self.outf). Note though, that
506
as it releases all resources, this may release locks that the command
507
wants to hold, so use should be done with care.
509
self._exit_stack.close()
511
def enter_context(self, cm):
512
return self._exit_stack.enter_context(cm)
515
"""Return single-line grammar for this command.
517
Only describes arguments, not options.
519
s = 'brz ' + self.name() + ' '
520
for aname in self.takes_args:
521
aname = aname.upper()
522
if aname[-1] in ['$', '+']:
523
aname = aname[:-1] + '...'
524
elif aname[-1] == '?':
525
aname = '[' + aname[:-1] + ']'
526
elif aname[-1] == '*':
527
aname = '[' + aname[:-1] + '...]'
529
s = s[:-1] # remove last space
532
def get_help_text(self, additional_see_also=None, plain=True,
533
see_also_as_links=False, verbose=True):
534
"""Return a text string with help for this command.
536
:param additional_see_also: Additional help topics to be
538
:param plain: if False, raw help (reStructuredText) is
539
returned instead of plain text.
540
:param see_also_as_links: if True, convert items in 'See also'
541
list to internal links (used by bzr_man rstx generator)
542
:param verbose: if True, display the full help, otherwise
543
leave out the descriptive sections and just display
544
usage help (e.g. Purpose, Usage, Options) with a
545
message explaining how to obtain full help.
548
i18n.install() # Install i18n only for get_help_text for now.
551
# Note: If self.gettext() translates ':Usage:\n', the section will
552
# be shown after "Description" section and we don't want to
553
# translate the usage string.
554
# Though, brz export-pot don't exports :Usage: section and it must
556
doc = self.gettext(doc)
558
doc = gettext("No help for this command.")
560
# Extract the summary (purpose) and sections out from the text
561
purpose, sections, order = self._get_help_parts(doc)
563
# If a custom usage section was provided, use it
564
if 'Usage' in sections:
565
usage = sections.pop('Usage')
567
usage = self._usage()
569
# The header is the purpose and usage
571
result += gettext(':Purpose: %s\n') % (purpose,)
572
if usage.find('\n') >= 0:
573
result += gettext(':Usage:\n%s\n') % (usage,)
575
result += gettext(':Usage: %s\n') % (usage,)
580
# XXX: optparse implicitly rewraps the help, and not always perfectly,
581
# so we get <https://bugs.launchpad.net/bzr/+bug/249908>. -- mbp
583
parser = option.get_optparser(
584
[v for k, v in sorted(self.options().items())])
585
options = parser.format_option_help()
586
# FIXME: According to the spec, ReST option lists actually don't
587
# support options like --1.14 so that causes syntax errors (in Sphinx
588
# at least). As that pattern always appears in the commands that
589
# break, we trap on that and then format that block of 'format' options
590
# as a literal block. We use the most recent format still listed so we
591
# don't have to do that too often -- vila 20110514
592
if not plain and options.find(' --1.14 ') != -1:
593
options = options.replace(' format:\n', ' format::\n\n', 1)
594
if options.startswith('Options:'):
595
result += gettext(':Options:%s') % (options[len('options:'):],)
601
# Add the description, indenting it 2 spaces
602
# to match the indentation of the options
604
text = sections.pop(None)
605
text = '\n '.join(text.splitlines())
606
result += gettext(':Description:\n %s\n\n') % (text,)
608
# Add the custom sections (e.g. Examples). Note that there's no need
609
# to indent these as they must be indented already in the source.
612
if label in sections:
613
result += ':%s:\n%s\n' % (label, sections[label])
616
result += (gettext("See brz help %s for more details and examples.\n\n")
619
# Add the aliases, source (plug-in) and see also links, if any
621
result += gettext(':Aliases: ')
622
result += ', '.join(self.aliases) + '\n'
623
plugin_name = self.plugin_name()
624
if plugin_name is not None:
625
result += gettext(':From: plugin "%s"\n') % plugin_name
626
see_also = self.get_see_also(additional_see_also)
628
if not plain and see_also_as_links:
630
for item in see_also:
632
# topics doesn't have an independent section
633
# so don't create a real link
634
see_also_links.append(item)
636
# Use a Sphinx link for this entry
637
link_text = gettext(":doc:`{0} <{1}-help>`").format(
639
see_also_links.append(link_text)
640
see_also = see_also_links
641
result += gettext(':See also: %s') % ', '.join(see_also) + '\n'
643
# If this will be rendered as plain text, convert it
645
import breezy.help_topics
646
result = breezy.help_topics.help_as_plain_text(result)
650
def _get_help_parts(text):
651
"""Split help text into a summary and named sections.
653
:return: (summary,sections,order) where summary is the top line and
654
sections is a dictionary of the rest indexed by section name.
655
order is the order the section appear in the text.
656
A section starts with a heading line of the form ":xxx:".
657
Indented text on following lines is the section value.
658
All text found outside a named section is assigned to the
659
default section which is given the key of None.
661
def save_section(sections, order, label, section):
663
if label in sections:
664
sections[label] += '\n' + section
667
sections[label] = section
669
lines = text.rstrip().splitlines()
670
summary = lines.pop(0)
673
label, section = None, ''
675
if line.startswith(':') and line.endswith(':') and len(line) > 2:
676
save_section(sections, order, label, section)
677
label, section = line[1:-1], ''
678
elif (label is not None and len(line) > 1 and
679
not line[0].isspace()):
680
save_section(sections, order, label, section)
681
label, section = None, line
684
section += '\n' + line
687
save_section(sections, order, label, section)
688
return summary, sections, order
690
def get_help_topic(self):
691
"""Return the commands help topic - its name."""
694
def get_see_also(self, additional_terms=None):
695
"""Return a list of help topics that are related to this command.
697
The list is derived from the content of the _see_also attribute. Any
698
duplicates are removed and the result is in lexical order.
699
:param additional_terms: Additional help topics to cross-reference.
700
:return: A list of help topics.
702
see_also = set(getattr(self, '_see_also', []))
704
see_also.update(additional_terms)
705
return sorted(see_also)
233
if self.__doc__ == Command.__doc__:
234
warn("No help message set for %r" % self)
707
236
def options(self):
708
237
"""Return dict of valid options for this command.
710
239
Maps from long option name to option object."""
711
r = Option.STD_OPTIONS.copy()
241
r['help'] = option.Option.OPTIONS['help']
713
242
for o in self.takes_options:
714
if isinstance(o, str):
243
if isinstance(o, basestring):
715
244
o = option.Option.OPTIONS[o]
717
if o.name in std_names:
718
self.supported_std_options.append(o.name)
721
248
def _setup_outf(self):
722
249
"""Return a file linked to stdout, which has proper encoding."""
723
self.outf = ui.ui_factory.make_output_stream(
724
encoding_type=self.encoding_type)
250
assert self.encoding_type in ['strict', 'exact', 'replace']
252
# Originally I was using self.stdout, but that looks
253
# *way* too much like sys.stdout
254
if self.encoding_type == 'exact':
255
# force sys.stdout to be binary stream on win32
256
if sys.platform == 'win32':
257
fileno = getattr(sys.stdout, 'fileno', None)
260
msvcrt.setmode(fileno(), os.O_BINARY)
261
self.outf = sys.stdout
264
output_encoding = osutils.get_terminal_encoding()
266
# use 'replace' so that we don't abort if trying to write out
267
# in e.g. the default C locale.
268
self.outf = codecs.getwriter(output_encoding)(sys.stdout, errors=self.encoding_type)
269
# For whatever reason codecs.getwriter() does not advertise its encoding
270
# it just returns the encoding of the wrapped file, which is completely
271
# bogus. So set the attribute, so we can find the correct encoding later.
272
self.outf.encoding = output_encoding
726
274
def run_argv_aliases(self, argv, alias_argv=None):
727
275
"""Parse the command line and run with extra aliases in alias_argv."""
277
warn("Passing None for [] is deprecated from bzrlib 0.10",
278
DeprecationWarning, stacklevel=2)
728
280
args, opts = parse_args(self, argv, alias_argv)
731
# Process the standard options
732
if 'help' in opts: # e.g. brz add --help
733
self.outf.write(self.get_help_text())
735
if 'usage' in opts: # e.g. brz add --usage
736
self.outf.write(self.get_help_text(verbose=False))
738
trace.set_verbosity_level(option._verbosity_level)
739
if 'verbose' in self.supported_std_options:
740
opts['verbose'] = trace.is_verbose()
741
elif 'verbose' in opts:
743
if 'quiet' in self.supported_std_options:
744
opts['quiet'] = trace.is_quiet()
745
elif 'quiet' in opts:
281
if 'help' in opts: # e.g. bzr add --help
282
from bzrlib.help import help_on_command
283
help_on_command(self.name())
747
285
# mix arguments and options into one dictionary
748
286
cmdargs = _match_argform(self.name(), self.takes_args, args)
837
324
:return: The name of the plugin or None if the command is builtin.
839
return plugin_name(self.__module__)
842
class CommandHooks(Hooks):
843
"""Hooks related to Command object creation/enumeration."""
846
"""Create the default hooks.
848
These are all empty initially, because by default nothing should get
851
Hooks.__init__(self, "breezy.commands", "Command.hooks")
854
"Called after creating a command object to allow modifications "
855
"such as adding or removing options, docs etc. Called with the "
856
"new breezy.commands.Command object.", (1, 13))
859
"Called when creating a single command. Called with "
860
"(cmd_or_None, command_name). get_command should either return "
861
"the cmd_or_None parameter, or a replacement Command object that "
862
"should be used for the command. Note that the Command.hooks "
863
"hooks are core infrastructure. Many users will prefer to use "
864
"breezy.commands.register_command or plugin_cmds.register_lazy.",
867
'get_missing_command',
868
"Called when creating a single command if no command could be "
869
"found. Called with (command_name). get_missing_command should "
870
"either return None, or a Command object to be used for the "
874
"Called when enumerating commands. Called with a set of "
875
"cmd_name strings for all the commands found so far. This set "
876
" is safe to mutate - e.g. to remove a command. "
877
"list_commands should return the updated set of command names.",
881
"Called prior to executing a command. Called with the command "
885
"Called after executing a command. Called with the command "
889
Command.hooks = CommandHooks()
326
mod_parts = self.__module__.split('.')
327
if len(mod_parts) >= 3 and mod_parts[1] == 'plugins':
333
# Technically, this function hasn't been use in a *really* long time
334
# but we are only deprecating it now.
335
@deprecated_function(zero_eleven)
336
def parse_spec(spec):
342
>>> parse_spec("../@")
344
>>> parse_spec("../f/@35")
346
>>> parse_spec('./@revid:john@arbash-meinel.com-20050711044610-3ca0327c6a222f67')
347
['.', 'revid:john@arbash-meinel.com-20050711044610-3ca0327c6a222f67']
352
parsed = spec.split('/@')
353
assert len(parsed) == 2
358
parsed[1] = int(parsed[1])
360
pass # We can allow stuff like ./@revid:blahblahblah
364
parsed = [spec, None]
892
367
def parse_args(command, argv, alias_argv=None):
893
368
"""Parse command line.
895
370
Arguments and options are parsed at this level before being passed
896
371
down to specific command handlers. This routine knows, from a
897
372
lookup table, something about the available options, what optargs
898
373
they take, and which commands will accept them.
900
375
# TODO: make it a method of the Command?
901
parser = option.get_optparser(
902
[v for k, v in sorted(command.options().items())])
376
parser = option.get_optparser(command.options())
903
377
if alias_argv is not None:
904
378
args = alias_argv + argv
908
# python 2's optparse raises this exception if a non-ascii
909
# option name is given. See http://bugs.python.org/issue2931
911
options, args = parser.parse_args(args)
912
except UnicodeEncodeError:
913
raise errors.CommandError(
914
gettext('Only ASCII permitted in option names'))
916
opts = dict((k, v) for k, v in options.__dict__.items() if
917
v is not option.OptionParser.DEFAULT_VALUE)
382
options, args = parser.parse_args(args)
383
opts = dict([(k, v) for k, v in options.__dict__.iteritems() if
384
v is not option.OptionParser.DEFAULT_VALUE])
918
385
return args, opts
1130
546
opt_no_plugins = True
1131
547
elif a == '--no-aliases':
1132
548
opt_no_aliases = True
1133
elif a == '--no-l10n':
1135
549
elif a == '--builtin':
1136
550
opt_builtin = True
1137
elif a == '--concurrency':
1138
os.environ['BRZ_CONCURRENCY'] = argv[i + 1]
1140
elif a == '--coverage':
1142
elif a == '--profile-imports':
1143
pass # already handled in startup script Bug #588277
551
elif a in ('--quiet', '-q'):
1144
553
elif a.startswith('-D'):
1145
554
debug.debug_flags.add(a[2:])
1146
elif a.startswith('-O'):
1147
override_config.append(a[2:])
1149
556
argv_copy.append(a)
1152
cmdline_overrides = breezy.get_global_state().cmdline_overrides
1153
cmdline_overrides._from_cmdline(override_config)
1155
debug.set_debug_flags_from_config()
1157
if not opt_no_plugins:
1158
from breezy import config
1159
c = config.GlobalConfig()
1160
warn_load_problems = not c.suppress_warning('plugin_load_failure')
1161
load_plugins(warn_load_problems=warn_load_problems)
1165
559
argv = argv_copy
1167
get_cmd_object('help').run_argv_aliases([])
561
from bzrlib.builtins import cmd_help
562
cmd_help().run_argv_aliases([])
1170
565
if argv[0] == '--version':
1171
get_cmd_object('version').run_argv_aliases([])
566
from bzrlib.version import show_version
570
if not opt_no_plugins:
571
from bzrlib.plugin import load_plugins
574
from bzrlib.plugin import disable_plugins
1174
577
alias_argv = None
1176
579
if not opt_no_aliases:
1177
580
alias_argv = get_alias(argv[0])
582
alias_argv = [a.decode(bzrlib.user_encoding) for a in alias_argv]
1179
583
argv[0] = alias_argv.pop(0)
1181
585
cmd = argv.pop(0)
586
# We want only 'ascii' command names, but the user may have typed
587
# in a Unicode name. In that case, they should just get a
588
# 'command not found' error later.
1182
590
cmd_obj = get_cmd_object(cmd, plugins_override=not opt_builtin)
1184
cmd_obj.l10n = False
1185
591
run = cmd_obj.run_argv_aliases
1186
592
run_argv = [argv, alias_argv]
1189
# We can be called recursively (tests for example), but we don't want
1190
# the verbosity level to propagate.
1191
saved_verbosity_level = option._verbosity_level
1192
option._verbosity_level = 0
1196
'--coverage ignored, because --lsprof is in use.')
1197
596
ret = apply_lsprofiled(opt_lsprof_file, run, *run_argv)
1198
597
elif opt_profile:
1201
'--coverage ignored, because --profile is in use.')
1202
598
ret = apply_profiled(run, *run_argv)
1204
ret = apply_coveraged(run, *run_argv)
1206
600
ret = run(*run_argv)
1209
# reset, in case we may do other commands later within the same
1210
# process. Commands that want to execute sub-commands must propagate
1211
# --verbose in their own way.
1212
if 'memory' in debug.debug_flags:
1213
trace.debug_memory('Process status after command:', short=False)
1214
option._verbosity_level = saved_verbosity_level
1215
# Reset the overrides
1216
cmdline_overrides._reset()
603
# reset, in case we may do other commands later within the same process
604
trace.be_quiet(False)
1219
606
def display_command(func):
1220
607
"""Decorator that suppresses pipe/interrupt errors."""
1236
623
return ignore_pipe
1239
def install_bzr_command_hooks():
1240
"""Install the hooks to supply bzr's own commands."""
1241
if _list_bzr_commands in Command.hooks["list_commands"]:
1243
Command.hooks.install_named_hook("list_commands", _list_bzr_commands,
1245
Command.hooks.install_named_hook("get_command", _get_bzr_command,
1247
Command.hooks.install_named_hook("get_command", _get_plugin_command,
1248
"bzr plugin commands")
1249
Command.hooks.install_named_hook("get_command", _get_external_command,
1250
"bzr external command lookup")
1251
Command.hooks.install_named_hook("get_missing_command",
1252
_try_plugin_provider,
1253
"bzr plugin-provider-db check")
1256
def _specified_or_unicode_argv(argv):
1257
# For internal or testing use, argv can be passed. Otherwise, get it from
1258
# the process arguments.
1263
# ensure all arguments are unicode strings
1265
if not isinstance(a, str):
1266
raise ValueError('not native str or unicode: %r' % (a,))
1268
except (ValueError, UnicodeDecodeError):
1269
raise errors.BzrError("argv should be list of unicode strings.")
1273
def main(argv=None):
1274
"""Main entry point of command-line interface.
1276
Typically `breezy.initialize` should be called first.
1278
:param argv: list of unicode command-line arguments similar to sys.argv.
1279
argv[0] is script name usually, it will be ignored.
1280
Don't pass here sys.argv because this list contains plain strings
1281
and not unicode; pass None instead.
1283
:return: exit code of brz command.
1285
if argv is not None:
1287
_register_builtin_commands()
628
from bzrlib.ui.text import TextUIFactory
629
bzrlib.ui.ui_factory = TextUIFactory()
630
argv = [a.decode(bzrlib.user_encoding) for a in argv[1:]]
1288
631
ret = run_bzr_catch_errors(argv)
1289
632
trace.mutter("return code %d", ret)
1293
636
def run_bzr_catch_errors(argv):
1294
"""Run a bzr command with parameters as described by argv.
1296
This function assumed that that UI layer is setup, that symbol deprecations
1297
are already applied, and that unicode decoding has already been performed
1300
# done here so that they're covered for every test run
1301
install_bzr_command_hooks()
1302
return exception_to_return_code(run_bzr, argv)
1305
def run_bzr_catch_user_errors(argv):
1306
"""Run brz and report user errors, but let internal errors propagate.
1308
This is used for the test suite, and might be useful for other programs
1309
that want to wrap the commandline interface.
1311
# done here so that they're covered for every test run
1312
install_bzr_command_hooks()
1314
638
return run_bzr(argv)
1315
except Exception as e:
1316
if (isinstance(e, (OSError, IOError))
1317
or not getattr(e, 'internal_error', True)):
1318
trace.report_exception(sys.exc_info(), sys.stderr)
1324
class HelpCommandIndex(object):
1325
"""A index for bzr help that returns commands."""
1328
self.prefix = 'commands/'
1330
def get_topics(self, topic):
1331
"""Search for topic amongst commands.
1333
:param topic: A topic to search for.
1334
:return: A list which is either empty or contains a single
1337
if topic and topic.startswith(self.prefix):
1338
topic = topic[len(self.prefix):]
1340
cmd = _get_cmd_object(topic, check_missing=False)
1347
class Provider(object):
1348
"""Generic class to be overriden by plugins"""
1350
def plugin_for_command(self, cmd_name):
1351
"""Takes a command and returns the information for that plugin
1353
:return: A dictionary with all the available information
1354
for the requested plugin
1356
raise NotImplementedError
1359
class ProvidersRegistry(registry.Registry):
1360
"""This registry exists to allow other providers to exist"""
1363
for key, provider in self.items():
1367
command_providers_registry = ProvidersRegistry()
639
# do this here inside the exception wrappers to catch EPIPE
641
except (KeyboardInterrupt, Exception), e:
642
# used to handle AssertionError and KeyboardInterrupt
643
# specially here, but hopefully they're handled ok by the logger now
644
trace.report_exception(sys.exc_info(), sys.stderr)
645
if os.environ.get('BZR_PDB'):
646
print '**** entering debugger'
648
pdb.post_mortem(sys.exc_traceback)
651
if __name__ == '__main__':
652
sys.exit(main(sys.argv))
added
removed
bzrlib/commands.py
