26
23
# 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?
33
from warnings import warn
28
from bzrlib.lazy_import import lazy_import
29
lazy_import(globals(), """
38
from bzrlib.errors import (BzrError,
47
from bzrlib.hooks import Hooks
48
from bzrlib.i18n import gettext
49
# Compatibility - Option used to be in commands.
43
50
from bzrlib.option import Option
44
from bzrlib.revisionspec import RevisionSpec
45
from bzrlib.symbol_versioning import *
47
from bzrlib.trace import mutter, note, log_error, warning, be_quiet
51
from bzrlib.plugin import disable_plugins, load_plugins
52
from bzrlib import registry
53
from bzrlib.symbol_versioning import (
60
class CommandInfo(object):
61
"""Information about a command."""
63
def __init__(self, aliases):
64
"""The list of aliases for the command."""
65
self.aliases = aliases
68
def from_command(klass, command):
69
"""Factory to construct a CommandInfo from a command."""
70
return klass(command.aliases)
73
class CommandRegistry(registry.Registry):
74
"""Special registry mapping command names to command classes.
76
:ivar overridden_registry: Look in this registry for commands being
77
overridden by this registry. This can be used to tell plugin commands
78
about the builtin they're decorating.
82
registry.Registry.__init__(self)
83
self.overridden_registry = None
84
# map from aliases to the real command that implements the name
87
def get(self, command_name):
88
real_name = self._alias_dict.get(command_name, command_name)
89
return registry.Registry.get(self, real_name)
92
def _get_name(command_name):
93
if command_name.startswith("cmd_"):
94
return _unsquish_command_name(command_name)
98
def register(self, cmd, decorate=False):
99
"""Utility function to help register a command
101
:param cmd: Command subclass to register
102
:param decorate: If true, allow overriding an existing command
103
of the same name; the old command is returned by this function.
104
Otherwise it is an error to try to override an existing command.
107
k_unsquished = self._get_name(k)
109
previous = self.get(k_unsquished)
112
if self.overridden_registry:
114
previous = self.overridden_registry.get(k_unsquished)
117
info = CommandInfo.from_command(cmd)
119
registry.Registry.register(self, k_unsquished, cmd,
120
override_existing=decorate, info=info)
122
trace.warning('Two plugins defined the same command: %r' % k)
123
trace.warning('Not loading the one in %r' %
124
sys.modules[cmd.__module__])
125
trace.warning('Previously this command was registered from %r' %
126
sys.modules[previous.__module__])
127
for a in cmd.aliases:
128
self._alias_dict[a] = k_unsquished
131
def register_lazy(self, command_name, aliases, module_name):
132
"""Register a command without loading its module.
134
:param command_name: The primary name of the command.
135
:param aliases: A list of aliases for the command.
136
:module_name: The module that the command lives in.
138
key = self._get_name(command_name)
139
registry.Registry.register_lazy(self, key, module_name, command_name,
140
info=CommandInfo(aliases))
142
self._alias_dict[a] = key
145
plugin_cmds = CommandRegistry()
146
builtin_command_registry = CommandRegistry()
147
plugin_cmds.overridden_registry = builtin_command_registry
52
150
def register_command(cmd, decorate=False):
53
"""Utility function to help register a command
151
"""Register a plugin command.
55
:param cmd: Command subclass to register
56
:param decorate: If true, allow overriding an existing command
57
of the same name; the old command is returned by this function.
58
Otherwise it is an error to try to override an existing command.
153
Should generally be avoided in favor of lazy registration.
60
155
global plugin_cmds
62
if k.startswith("cmd_"):
63
k_unsquished = _unsquish_command_name(k)
66
if not plugin_cmds.has_key(k_unsquished):
67
plugin_cmds[k_unsquished] = cmd
68
mutter('registered plugin command %s', k_unsquished)
69
if decorate and k_unsquished in builtin_command_names():
70
return _builtin_commands()[k_unsquished]
72
result = plugin_cmds[k_unsquished]
73
plugin_cmds[k_unsquished] = cmd
76
log_error('Two plugins defined the same command: %r' % k)
77
log_error('Not loading the one in %r' % sys.modules[cmd.__module__])
156
return plugin_cmds.register(cmd, decorate)
80
159
def _squish_command_name(cmd):
84
163
def _unsquish_command_name(cmd):
85
assert cmd.startswith("cmd_")
86
164
return cmd[4:].replace('_','-')
89
def _builtin_commands():
167
def _register_builtin_commands():
168
if builtin_command_registry.keys():
90
171
import bzrlib.builtins
172
for cmd_class in _scan_module_for_commands(bzrlib.builtins).values():
173
builtin_command_registry.register(cmd_class)
174
bzrlib.builtins._register_lazy_builtins()
177
def _scan_module_for_commands(module):
92
builtins = bzrlib.builtins.__dict__
179
for name, obj in module.__dict__.iteritems():
94
180
if name.startswith("cmd_"):
95
181
real_name = _unsquish_command_name(name)
96
r[real_name] = builtins[name]
186
def _list_bzr_commands(names):
187
"""Find commands from bzr's core and plugins.
189
This is not the public interface, just the default hook called by all_command_names.
191
# to eliminate duplicates
192
names.update(builtin_command_names())
193
names.update(plugin_command_names())
197
def all_command_names():
198
"""Return a set of all command names."""
200
for hook in Command.hooks['list_commands']:
203
raise AssertionError(
204
'hook %s returned None' % Command.hooks.get_hook_name(hook))
100
208
def builtin_command_names():
101
"""Return list of builtin command names."""
102
return _builtin_commands().keys()
209
"""Return list of builtin command names.
211
Use of all_command_names() is encouraged rather than builtin_command_names
212
and/or plugin_command_names.
214
_register_builtin_commands()
215
return builtin_command_registry.keys()
105
218
def plugin_command_names():
219
"""Returns command names from commands registered by plugins."""
106
220
return plugin_cmds.keys()
109
def _get_cmd_dict(plugins_override=True):
110
"""Return name->class mapping for all commands."""
111
d = _builtin_commands()
113
d.update(plugin_cmds)
117
def get_all_cmds(plugins_override=True):
118
"""Return canonical name and class for all registered commands."""
119
for k, v in _get_cmd_dict(plugins_override=plugins_override).iteritems():
123
223
def get_cmd_object(cmd_name, plugins_override=True):
124
"""Return the canonical name and command class for a command.
224
"""Return the command object for a command.
127
227
If true, plugin commands can override builtins.
230
return _get_cmd_object(cmd_name, plugins_override)
232
raise errors.BzrCommandError(gettext('unknown command "%s"') % cmd_name)
235
def _get_cmd_object(cmd_name, plugins_override=True, check_missing=True):
236
"""Get a command object.
238
:param cmd_name: The name of the command.
239
:param plugins_override: Allow plugins to override builtins.
240
:param check_missing: Look up commands not found in the regular index via
241
the get_missing_command hook.
242
:return: A Command object instance
243
:raises KeyError: If no command is found.
245
# We want only 'ascii' command names, but the user may have typed
246
# in a Unicode name. In that case, they should just get a
247
# 'command not found' error later.
248
# In the future, we may actually support Unicode command names.
251
for hook in Command.hooks['get_command']:
252
cmd = hook(cmd, cmd_name)
253
if cmd is not None and not plugins_override and not cmd.plugin_name():
254
# We've found a non-plugin command, don't permit it to be
257
if cmd is None and check_missing:
258
for hook in Command.hooks['get_missing_command']:
265
# Allow plugins to extend commands
266
for hook in Command.hooks['extend_command']:
268
if getattr(cmd, 'invoked_as', None) is None:
269
cmd.invoked_as = cmd_name
273
def _try_plugin_provider(cmd_name):
274
"""Probe for a plugin provider having cmd_name."""
276
plugin_metadata, provider = probe_for_provider(cmd_name)
277
raise errors.CommandAvailableInPlugin(cmd_name,
278
plugin_metadata, provider)
279
except errors.NoPluginAvailable:
283
def probe_for_provider(cmd_name):
284
"""Look for a provider for cmd_name.
286
:param cmd_name: The command name.
287
:return: plugin_metadata, provider for getting cmd_name.
288
:raises NoPluginAvailable: When no provider can supply the plugin.
290
# look for providers that provide this command but aren't installed
291
for provider in command_providers_registry:
293
return provider.plugin_for_command(cmd_name), provider
294
except errors.NoPluginAvailable:
296
raise errors.NoPluginAvailable(cmd_name)
299
def _get_bzr_command(cmd_or_None, cmd_name):
300
"""Get a command from bzr's core."""
302
cmd_class = builtin_command_registry.get(cmd_name)
310
def _get_external_command(cmd_or_None, cmd_name):
311
"""Lookup a command that is a shell script."""
312
# Only do external command lookups when no command is found so far.
313
if cmd_or_None is not None:
129
315
from bzrlib.externalcommand import ExternalCommand
131
cmd_name = str(cmd_name) # not unicode
133
# first look up this command under the specified name
134
cmds = _get_cmd_dict(plugins_override=plugins_override)
136
return cmds[cmd_name]()
140
# look for any command which claims this as an alias
141
for real_cmd_name, cmd_class in cmds.iteritems():
142
if cmd_name in cmd_class.aliases:
145
316
cmd_obj = ExternalCommand.find_command(cmd_name)
149
raise BzrCommandError("unknown command %r" % cmd_name)
321
def _get_plugin_command(cmd_or_None, cmd_name):
322
"""Get a command from bzr's plugins."""
324
return plugin_cmds.get(cmd_name)()
327
for key in plugin_cmds.keys():
328
info = plugin_cmds.get_info(key)
329
if cmd_name in info.aliases:
330
return plugin_cmds.get(key)()
152
334
class Command(object):
167
349
summary, then a complete description of the command. A grammar
168
350
description will be inserted.
171
Other accepted names for this command.
174
List of argument forms, marked with whether they are optional,
179
['to_location', 'from_branch?', 'file*']
181
'to_location' is required
182
'from_branch' is optional
183
'file' can be specified 0 or more times
186
List of options that may be given for this command. These can
187
be either strings, referring to globally-defined options,
188
or option objects. Retrieve through options().
191
If true, this command isn't advertised. This is typically
352
:cvar aliases: Other accepted names for this command.
354
:cvar takes_args: List of argument forms, marked with whether they are
355
optional, repeated, etc. Examples::
357
['to_location', 'from_branch?', 'file*']
359
* 'to_location' is required
360
* 'from_branch' is optional
361
* 'file' can be specified 0 or more times
363
:cvar takes_options: List of options that may be given for this command.
364
These can be either strings, referring to globally-defined options, or
365
option objects. Retrieve through options().
367
:cvar hidden: If true, this command isn't advertised. This is typically
192
368
for commands intended for expert users.
195
Command objects will get a 'outf' attribute, which has been
196
setup to properly handle encoding of unicode strings.
197
encoding_type determines what will happen when characters cannot
199
strict - abort if we cannot decode
200
replace - put in a bogus character (typically '?')
201
exact - do not encode sys.stdout
370
:cvar encoding_type: Command objects will get a 'outf' attribute, which has
371
been setup to properly handle encoding of unicode strings.
372
encoding_type determines what will happen when characters cannot be
375
* strict - abort if we cannot decode
376
* replace - put in a bogus character (typically '?')
377
* exact - do not encode sys.stdout
379
NOTE: by default on Windows, sys.stdout is opened as a text stream,
380
therefore LF line-endings are converted to CRLF. When a command uses
381
encoding_type = 'exact', then sys.stdout is forced to be a binary
382
stream, and line-endings will not mangled.
385
A string indicating the real name under which this command was
386
invoked, before expansion of aliases.
387
(This may be None if the command was constructed and run in-process.)
389
:cvar hooks: An instance of CommandHooks.
391
:cvar __doc__: The help shown by 'bzr help command' for this command.
392
This is set by assigning explicitly to __doc__ so that -OO can
396
__doc__ = "My help goes here"
206
400
takes_options = []
207
401
encoding_type = 'strict'
211
407
def __init__(self):
212
408
"""Construct an instance of this command."""
213
if self.__doc__ == Command.__doc__:
214
warn("No help message set for %r" % self)
409
# List of standard options directly supported
410
self.supported_std_options = []
413
def add_cleanup(self, cleanup_func, *args, **kwargs):
414
"""Register a function to call after self.run returns or raises.
416
Functions will be called in LIFO order.
418
self._operation.add_cleanup(cleanup_func, *args, **kwargs)
420
def cleanup_now(self):
421
"""Execute and empty pending cleanup functions immediately.
423
After cleanup_now all registered cleanups are forgotten. add_cleanup
424
may be called again after cleanup_now; these cleanups will be called
425
after self.run returns or raises (or when cleanup_now is next called).
427
This is useful for releasing expensive or contentious resources (such
428
as write locks) before doing further work that does not require those
429
resources (such as writing results to self.outf). Note though, that
430
as it releases all resources, this may release locks that the command
431
wants to hold, so use should be done with care.
433
self._operation.cleanup_now()
436
"""Return single-line grammar for this command.
438
Only describes arguments, not options.
440
s = 'bzr ' + self.name() + ' '
441
for aname in self.takes_args:
442
aname = aname.upper()
443
if aname[-1] in ['$', '+']:
444
aname = aname[:-1] + '...'
445
elif aname[-1] == '?':
446
aname = '[' + aname[:-1] + ']'
447
elif aname[-1] == '*':
448
aname = '[' + aname[:-1] + '...]'
450
s = s[:-1] # remove last space
453
def get_help_text(self, additional_see_also=None, plain=True,
454
see_also_as_links=False, verbose=True):
455
"""Return a text string with help for this command.
457
:param additional_see_also: Additional help topics to be
459
:param plain: if False, raw help (reStructuredText) is
460
returned instead of plain text.
461
:param see_also_as_links: if True, convert items in 'See also'
462
list to internal links (used by bzr_man rstx generator)
463
:param verbose: if True, display the full help, otherwise
464
leave out the descriptive sections and just display
465
usage help (e.g. Purpose, Usage, Options) with a
466
message explaining how to obtain full help.
469
i18n.install() # Install i18n only for get_help_text for now.
472
# Note: If self.gettext() translates ':Usage:\n', the section will
473
# be shown after "Description" section and we don't want to
474
# translate the usage string.
475
# Though, bzr export-pot don't exports :Usage: section and it must
477
doc = self.gettext(doc)
479
doc = gettext("No help for this command.")
481
# Extract the summary (purpose) and sections out from the text
482
purpose,sections,order = self._get_help_parts(doc)
484
# If a custom usage section was provided, use it
485
if sections.has_key('Usage'):
486
usage = sections.pop('Usage')
488
usage = self._usage()
490
# The header is the purpose and usage
492
result += gettext(':Purpose: %s\n') % (purpose,)
493
if usage.find('\n') >= 0:
494
result += gettext(':Usage:\n%s\n') % (usage,)
496
result += gettext(':Usage: %s\n') % (usage,)
501
# XXX: optparse implicitly rewraps the help, and not always perfectly,
502
# so we get <https://bugs.launchpad.net/bzr/+bug/249908>. -- mbp
504
parser = option.get_optparser(self.options())
505
options = parser.format_option_help()
506
# FIXME: According to the spec, ReST option lists actually don't
507
# support options like --1.14 so that causes syntax errors (in Sphinx
508
# at least). As that pattern always appears in the commands that
509
# break, we trap on that and then format that block of 'format' options
510
# as a literal block. We use the most recent format still listed so we
511
# don't have to do that too often -- vila 20110514
512
if not plain and options.find(' --1.14 ') != -1:
513
options = options.replace(' format:\n', ' format::\n\n', 1)
514
if options.startswith('Options:'):
515
result += gettext(':Options:%s') % (options[len('options:'):],)
521
# Add the description, indenting it 2 spaces
522
# to match the indentation of the options
523
if sections.has_key(None):
524
text = sections.pop(None)
525
text = '\n '.join(text.splitlines())
526
result += gettext(':Description:\n %s\n\n') % (text,)
528
# Add the custom sections (e.g. Examples). Note that there's no need
529
# to indent these as they must be indented already in the source.
532
if label in sections:
533
result += ':%s:\n%s\n' % (label, sections[label])
536
result += (gettext("See bzr help %s for more details and examples.\n\n")
539
# Add the aliases, source (plug-in) and see also links, if any
541
result += gettext(':Aliases: ')
542
result += ', '.join(self.aliases) + '\n'
543
plugin_name = self.plugin_name()
544
if plugin_name is not None:
545
result += gettext(':From: plugin "%s"\n') % plugin_name
546
see_also = self.get_see_also(additional_see_also)
548
if not plain and see_also_as_links:
550
for item in see_also:
552
# topics doesn't have an independent section
553
# so don't create a real link
554
see_also_links.append(item)
556
# Use a Sphinx link for this entry
557
link_text = gettext(":doc:`{0} <{1}-help>`").format(
559
see_also_links.append(link_text)
560
see_also = see_also_links
561
result += gettext(':See also: %s') % ', '.join(see_also) + '\n'
563
# If this will be rendered as plain text, convert it
565
import bzrlib.help_topics
566
result = bzrlib.help_topics.help_as_plain_text(result)
570
def _get_help_parts(text):
571
"""Split help text into a summary and named sections.
573
:return: (summary,sections,order) where summary is the top line and
574
sections is a dictionary of the rest indexed by section name.
575
order is the order the section appear in the text.
576
A section starts with a heading line of the form ":xxx:".
577
Indented text on following lines is the section value.
578
All text found outside a named section is assigned to the
579
default section which is given the key of None.
581
def save_section(sections, order, label, section):
583
if sections.has_key(label):
584
sections[label] += '\n' + section
587
sections[label] = section
589
lines = text.rstrip().splitlines()
590
summary = lines.pop(0)
593
label,section = None,''
595
if line.startswith(':') and line.endswith(':') and len(line) > 2:
596
save_section(sections, order, label, section)
597
label,section = line[1:-1],''
598
elif (label is not None) and len(line) > 1 and not line[0].isspace():
599
save_section(sections, order, label, section)
600
label,section = None,line
603
section += '\n' + line
606
save_section(sections, order, label, section)
607
return summary, sections, order
609
def get_help_topic(self):
610
"""Return the commands help topic - its name."""
613
def get_see_also(self, additional_terms=None):
614
"""Return a list of help topics that are related to this command.
616
The list is derived from the content of the _see_also attribute. Any
617
duplicates are removed and the result is in lexical order.
618
:param additional_terms: Additional help topics to cross-reference.
619
:return: A list of help topics.
621
see_also = set(getattr(self, '_see_also', []))
623
see_also.update(additional_terms)
624
return sorted(see_also)
216
626
def options(self):
217
627
"""Return dict of valid options for this command.
219
629
Maps from long option name to option object."""
221
r['help'] = Option.OPTIONS['help']
630
r = Option.STD_OPTIONS.copy()
222
632
for o in self.takes_options:
223
if not isinstance(o, Option):
224
o = Option.OPTIONS[o]
633
if isinstance(o, basestring):
634
o = option.Option.OPTIONS[o]
636
if o.name in std_names:
637
self.supported_std_options.append(o.name)
228
640
def _setup_outf(self):
229
641
"""Return a file linked to stdout, which has proper encoding."""
230
assert self.encoding_type in ['strict', 'exact', 'replace']
232
# Originally I was using self.stdout, but that looks
233
# *way* too much like sys.stdout
234
if self.encoding_type == 'exact':
235
self.outf = sys.stdout
238
output_encoding = getattr(sys.stdout, 'encoding', None)
239
if not output_encoding:
240
input_encoding = getattr(sys.stdin, 'encoding', None)
241
if not input_encoding:
242
output_encoding = bzrlib.user_encoding
243
mutter('encoding stdout as bzrlib.user_encoding %r', output_encoding)
245
output_encoding = input_encoding
246
mutter('encoding stdout as sys.stdin encoding %r', output_encoding)
248
mutter('encoding stdout as sys.stdout encoding %r', output_encoding)
250
# use 'replace' so that we don't abort if trying to write out
251
# in e.g. the default C locale.
252
self.outf = codecs.getwriter(output_encoding)(sys.stdout, errors=self.encoding_type)
253
# For whatever reason codecs.getwriter() does not advertise its encoding
254
# it just returns the encoding of the wrapped file, which is completely
255
# bogus. So set the attribute, so we can find the correct encoding later.
256
self.outf.encoding = output_encoding
258
@deprecated_method(zero_eight)
259
def run_argv(self, argv):
260
"""Parse command line and run.
262
See run_argv_aliases for the 0.8 and beyond api.
264
return self.run_argv_aliases(argv)
642
self.outf = ui.ui_factory.make_output_stream(
643
encoding_type=self.encoding_type)
266
645
def run_argv_aliases(self, argv, alias_argv=None):
267
646
"""Parse the command line and run with extra aliases in alias_argv."""
268
647
args, opts = parse_args(self, argv, alias_argv)
650
# Process the standard options
269
651
if 'help' in opts: # e.g. bzr add --help
270
from bzrlib.help import help_on_command
271
help_on_command(self.name())
273
# XXX: This should be handled by the parser
274
allowed_names = self.options().keys()
276
if oname not in allowed_names:
277
raise BzrCommandError("option '--%s' is not allowed for"
278
" command %r" % (oname, self.name()))
652
self.outf.write(self.get_help_text())
654
if 'usage' in opts: # e.g. bzr add --usage
655
self.outf.write(self.get_help_text(verbose=False))
657
trace.set_verbosity_level(option._verbosity_level)
658
if 'verbose' in self.supported_std_options:
659
opts['verbose'] = trace.is_verbose()
660
elif opts.has_key('verbose'):
662
if 'quiet' in self.supported_std_options:
663
opts['quiet'] = trace.is_quiet()
664
elif opts.has_key('quiet'):
279
667
# mix arguments and options into one dictionary
280
668
cmdargs = _match_argform(self.name(), self.takes_args, args)
310
733
return getdoc(self)
735
def gettext(self, message):
736
"""Returns the gettext function used to translate this command's help.
738
Commands provided by plugins should override this to use their
741
return i18n.gettext_per_paragraph(message)
744
"""Return the canonical name for this command.
746
The name under which it was actually invoked is available in invoked_as.
313
748
return _unsquish_command_name(self.__class__.__name__)
750
def plugin_name(self):
751
"""Get the name of the plugin that provides this command.
316
def parse_spec(spec):
322
>>> parse_spec("../@")
324
>>> parse_spec("../f/@35")
326
>>> parse_spec('./@revid:john@arbash-meinel.com-20050711044610-3ca0327c6a222f67')
327
['.', 'revid:john@arbash-meinel.com-20050711044610-3ca0327c6a222f67']
332
parsed = spec.split('/@')
333
assert len(parsed) == 2
753
:return: The name of the plugin or None if the command is builtin.
755
mod_parts = self.__module__.split('.')
756
if len(mod_parts) >= 3 and mod_parts[1] == 'plugins':
338
parsed[1] = int(parsed[1])
340
pass # We can allow stuff like ./@revid:blahblahblah
344
parsed = [spec, None]
762
class CommandHooks(Hooks):
763
"""Hooks related to Command object creation/enumeration."""
766
"""Create the default hooks.
768
These are all empty initially, because by default nothing should get
771
Hooks.__init__(self, "bzrlib.commands", "Command.hooks")
772
self.add_hook('extend_command',
773
"Called after creating a command object to allow modifications "
774
"such as adding or removing options, docs etc. Called with the "
775
"new bzrlib.commands.Command object.", (1, 13))
776
self.add_hook('get_command',
777
"Called when creating a single command. Called with "
778
"(cmd_or_None, command_name). get_command should either return "
779
"the cmd_or_None parameter, or a replacement Command object that "
780
"should be used for the command. Note that the Command.hooks "
781
"hooks are core infrastructure. Many users will prefer to use "
782
"bzrlib.commands.register_command or plugin_cmds.register_lazy.",
784
self.add_hook('get_missing_command',
785
"Called when creating a single command if no command could be "
786
"found. Called with (command_name). get_missing_command should "
787
"either return None, or a Command object to be used for the "
789
self.add_hook('list_commands',
790
"Called when enumerating commands. Called with a set of "
791
"cmd_name strings for all the commands found so far. This set "
792
" is safe to mutate - e.g. to remove a command. "
793
"list_commands should return the updated set of command names.",
796
Command.hooks = CommandHooks()
347
799
def parse_args(command, argv, alias_argv=None):
348
800
"""Parse command line.
350
802
Arguments and options are parsed at this level before being passed
351
803
down to specific command handlers. This routine knows, from a
352
804
lookup table, something about the available options, what optargs
353
805
they take, and which commands will accept them.
355
# TODO: chop up this beast; make it a method of the Command
360
cmd_options = command.options()
362
proc_aliasarg = True # Are we processing alias_argv now?
363
for proc_argv in alias_argv, argv:
370
# We've received a standalone -- No more flags
374
# option names must not be unicode
378
mutter(" got option %r", a)
380
optname, optarg = a[2:].split('=', 1)
383
if optname not in cmd_options:
384
raise BzrOptionError('unknown long option %r for'
389
if shortopt in Option.SHORT_OPTIONS:
390
# Multi-character options must have a space to delimit
392
# ^^^ what does this mean? mbp 20051014
393
optname = Option.SHORT_OPTIONS[shortopt].name
395
# Single character short options, can be chained,
396
# and have their value appended to their name
398
if shortopt not in Option.SHORT_OPTIONS:
399
# We didn't find the multi-character name, and we
400
# didn't find the single char name
401
raise BzrError('unknown short option %r' % a)
402
optname = Option.SHORT_OPTIONS[shortopt].name
405
# There are extra things on this option
406
# see if it is the value, or if it is another
408
optargfn = Option.OPTIONS[optname].type
410
# This option does not take an argument, so the
411
# next entry is another short option, pack it
413
proc_argv.insert(0, '-' + a[2:])
415
# This option takes an argument, so pack it
419
if optname not in cmd_options:
420
raise BzrOptionError('unknown short option %r for'
422
(shortopt, command.name()))
424
# XXX: Do we ever want to support this, e.g. for -r?
426
raise BzrError('repeated option %r' % a)
427
elif optname in alias_opts:
428
# Replace what's in the alias with what's in the real
430
del alias_opts[optname]
432
proc_argv.insert(0, a)
435
raise BzrError('repeated option %r' % a)
437
option_obj = cmd_options[optname]
438
optargfn = option_obj.type
442
raise BzrError('option %r needs an argument' % a)
444
optarg = proc_argv.pop(0)
445
opts[optname] = optargfn(optarg)
447
alias_opts[optname] = optargfn(optarg)
450
raise BzrError('option %r takes no argument' % optname)
453
alias_opts[optname] = True
456
proc_aliasarg = False # Done with alias argv
807
# TODO: make it a method of the Command?
808
parser = option.get_optparser(command.options())
809
if alias_argv is not None:
810
args = alias_argv + argv
814
# for python 2.5 and later, optparse raises this exception if a non-ascii
815
# option name is given. See http://bugs.python.org/issue2931
817
options, args = parser.parse_args(args)
818
except UnicodeEncodeError,e:
819
raise errors.BzrCommandError(gettext('Only ASCII permitted in option names'))
821
opts = dict([(k, v) for k, v in options.__dict__.iteritems() if
822
v is not option.OptionParser.DEFAULT_VALUE])
457
823
return args, opts
525
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])
528
956
def apply_lsprofiled(filename, the_callable, *args, **kwargs):
529
957
from bzrlib.lsprof import profile
531
ret, stats = profile(the_callable, *args, **kwargs)
958
ret, stats = profile(exception_to_return_code, the_callable,
533
961
if filename is None:
537
cPickle.dump(stats, open(filename, 'w'), 2)
538
print 'Profile data written to %r.' % filename
965
trace.note(gettext('Profile data written to "%s".'), filename)
543
"""Return an expanded alias, or None if no alias exists"""
545
alias = bzrlib.config.GlobalConfig().get_alias(cmd)
969
def get_alias(cmd, config=None):
970
"""Return an expanded alias, or None if no alias exists.
973
Command to be checked for an alias.
975
Used to specify an alternative config to use,
976
which is especially useful for testing.
977
If it is unspecified, the global config will be used.
981
config = bzrlib.config.GlobalConfig()
982
alias = config.get_alias(cmd)
547
return alias.split(' ')
984
return cmdline.split(alias)
988
def run_bzr(argv, load_plugins=load_plugins, disable_plugins=disable_plugins):
552
989
"""Execute a command.
554
This is similar to main(), but without all the trappings for
555
logging and error handling.
558
The command-line arguments, without the program name from argv[0]
559
These should already be decoded. All library/test code calling
560
run_bzr should be passing valid strings (don't need decoding).
562
Returns a command status or raises an exception.
991
:param argv: The command-line arguments, without the program name from
992
argv[0] These should already be decoded. All library/test code calling
993
run_bzr should be passing valid strings (don't need decoding).
994
:param load_plugins: What function to call when triggering plugin loading.
995
This function should take no arguments and cause all plugins to be
997
:param disable_plugins: What function to call when disabling plugin
998
loading. This function should take no arguments and cause all plugin
999
loading to be prohibited (so that code paths in your application that
1000
know about some plugins possibly being present will fail to import
1001
those plugins even if they are installed.)
1002
:return: Returns a command exit code or raises an exception.
564
1004
Special master options: these must come before the command because
565
1005
they control how the command is interpreted.
669
1139
sys.stdout.flush()
671
1141
except IOError, e:
672
if not hasattr(e, 'errno'):
1142
if getattr(e, 'errno', None) is None:
674
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)):
677
1149
except KeyboardInterrupt:
679
1151
return ignore_pipe
684
from bzrlib.ui.text import TextUIFactory
685
## bzrlib.trace.enable_default_logging()
686
bzrlib.trace.log_startup(argv)
687
bzrlib.ui.ui_factory = TextUIFactory()
689
argv = [a.decode(bzrlib.user_encoding) for a in argv[1:]]
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
if argv is not None:
1204
_register_builtin_commands()
690
1205
ret = run_bzr_catch_errors(argv)
691
mutter("return code %d", ret)
1206
trace.mutter("return code %d", ret)
695
1210
def run_bzr_catch_errors(argv):
1211
"""Run a bzr command with parameters as described by argv.
1213
This function assumed that that UI layer is setup, that symbol deprecations
1214
are already applied, and that unicode decoding has already been performed on argv.
1216
# done here so that they're covered for every test run
1217
install_bzr_command_hooks()
1218
return exception_to_return_code(run_bzr, argv)
1221
def run_bzr_catch_user_errors(argv):
1222
"""Run bzr and report user errors, but let internal errors propagate.
1224
This is used for the test suite, and might be useful for other programs
1225
that want to wrap the commandline interface.
1227
# done here so that they're covered for every test run
1228
install_bzr_command_hooks()
700
# do this here inside the exception wrappers to catch EPIPE
1230
return run_bzr(argv)
702
1231
except Exception, e:
703
# used to handle AssertionError and KeyboardInterrupt
704
# specially here, but hopefully they're handled ok by the logger now
706
if (isinstance(e, IOError)
707
and hasattr(e, 'errno')
708
and e.errno == errno.EPIPE):
709
bzrlib.trace.note('broken pipe')
712
bzrlib.trace.log_exception()
713
if os.environ.get('BZR_PDB'):
714
print '**** entering debugger'
716
pdb.post_mortem(sys.exc_traceback)
719
if __name__ == '__main__':
720
sys.exit(main(sys.argv))
1232
if (isinstance(e, (OSError, IOError))
1233
or not getattr(e, 'internal_error', True)):
1234
trace.report_exception(sys.exc_info(), sys.stderr)
1240
class HelpCommandIndex(object):
1241
"""A index for bzr help that returns commands."""
1244
self.prefix = 'commands/'
1246
def get_topics(self, topic):
1247
"""Search for topic amongst commands.
1249
:param topic: A topic to search for.
1250
:return: A list which is either empty or contains a single
1253
if topic and topic.startswith(self.prefix):
1254
topic = topic[len(self.prefix):]
1256
cmd = _get_cmd_object(topic, check_missing=False)
1263
class Provider(object):
1264
"""Generic class to be overriden by plugins"""
1266
def plugin_for_command(self, cmd_name):
1267
"""Takes a command and returns the information for that plugin
1269
:return: A dictionary with all the available information
1270
for the requested plugin
1272
raise NotImplementedError
1275
class ProvidersRegistry(registry.Registry):
1276
"""This registry exists to allow other providers to exist"""
1279
for key, provider in self.iteritems():
1282
command_providers_registry = ProvidersRegistry()
added
removed
bzrlib/commands.py
