359
357
summary, then a complete description of the command. A grammar
360
358
description will be inserted.
362
:cvar aliases: Other accepted names for this command.
364
:cvar takes_args: List of argument forms, marked with whether they are
365
optional, repeated, etc. Examples::
367
['to_location', 'from_branch?', 'file*']
369
* 'to_location' is required
370
* 'from_branch' is optional
371
* 'file' can be specified 0 or more times
373
:cvar takes_options: List of options that may be given for this command.
374
These can be either strings, referring to globally-defined options, or
375
option objects. Retrieve through options().
377
:cvar hidden: If true, this command isn't advertised. This is typically
361
Other accepted names for this command.
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
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().
381
If true, this command isn't advertised. This is typically
378
382
for commands intended for expert users.
380
:cvar encoding_type: Command objects will get a 'outf' attribute, which has
381
been setup to properly handle encoding of unicode strings.
382
encoding_type determines what will happen when characters cannot be
385
* strict - abort if we cannot decode
386
* replace - put in a bogus character (typically '?')
387
* exact - do not encode sys.stdout
389
NOTE: by default on Windows, sys.stdout is opened as a text stream,
390
therefore LF line-endings are converted to CRLF. When a command uses
391
encoding_type = 'exact', then sys.stdout is forced to be a binary
392
stream, and line-endings will not mangled.
395
A string indicating the real name under which this command was
396
invoked, before expansion of aliases.
397
(This may be None if the command was constructed and run in-process.)
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
399
:cvar hooks: An instance of CommandHooks.
401
:cvar __doc__: The help shown by 'bzr help command' for this command.
402
This is set by assigning explicitly to __doc__ so that -OO can
406
__doc__ = "My help goes here"
410
403
takes_options = []
411
404
encoding_type = 'strict'
417
408
def __init__(self):
418
409
"""Construct an instance of this command."""
410
if self.__doc__ == Command.__doc__:
411
warn("No help message set for %r" % self)
419
412
# List of standard options directly supported
420
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self.supported_std_options = []
414
self._operation = cleanup.OperationWithCleanups(self.run)
423
416
def add_cleanup(self, cleanup_func, *args, **kwargs):
424
417
"""Register a function to call after self.run returns or raises.
488
479
usage help (e.g. Purpose, Usage, Options) with a
489
480
message explaining how to obtain full help.
491
if self.l10n and not i18n.installed():
492
i18n.install() # Install i18n only for get_help_text for now.
493
482
doc = self.help()
495
# Note: If self.gettext() translates ':Usage:\n', the section will
496
# be shown after "Description" section and we don't want to
497
# translate the usage string.
498
# Though, bzr export-pot don't exports :Usage: section and it must
500
doc = self.gettext(doc)
502
doc = gettext("No help for this command.")
484
raise NotImplementedError("sorry, no detailed help yet for %r" % self.name())
504
486
# Extract the summary (purpose) and sections out from the text
505
487
purpose,sections,order = self._get_help_parts(doc)
524
506
# XXX: optparse implicitly rewraps the help, and not always perfectly,
525
507
# so we get <https://bugs.launchpad.net/bzr/+bug/249908>. -- mbp
527
parser = option.get_optparser(self.options())
528
options = parser.format_option_help()
529
# FIXME: According to the spec, ReST option lists actually don't
530
# support options like --1.14 so that causes syntax errors (in Sphinx
531
# at least). As that pattern always appears in the commands that
532
# break, we trap on that and then format that block of 'format' options
533
# as a literal block. We use the most recent format still listed so we
534
# don't have to do that too often -- vila 20110514
535
if not plain and options.find(' --1.14 ') != -1:
509
options = option.get_optparser(self.options()).format_option_help()
510
# XXX: According to the spec, ReST option lists actually don't support
511
# options like --1.9 so that causes syntax errors (in Sphinx at least).
512
# As that pattern always appears in the commands that break, we trap
513
# on that and then format that block of 'format' options as a literal
515
if not plain and options.find(' --1.9 ') != -1:
536
516
options = options.replace(' format:\n', ' format::\n\n', 1)
537
517
if options.startswith('Options:'):
538
result += gettext(':Options:%s') % (options[len('options:'):],)
518
result += ':' + options
519
elif options.startswith('options:'):
520
# Python 2.4 version of optparse
521
result += ':Options:' + options[len('options:'):]
540
523
result += options
546
529
if sections.has_key(None):
547
530
text = sections.pop(None)
548
531
text = '\n '.join(text.splitlines())
549
result += gettext(':Description:\n %s\n\n') % (text,)
532
result += ':%s:\n %s\n\n' % ('Description',text)
551
534
# Add the custom sections (e.g. Examples). Note that there's no need
552
535
# to indent these as they must be indented already in the source.
554
537
for label in order:
555
if label in sections:
556
result += ':%s:\n%s\n' % (label, sections[label])
538
if sections.has_key(label):
539
result += ':%s:\n%s\n' % (label,sections[label])
559
result += (gettext("See bzr help %s for more details and examples.\n\n")
542
result += ("See bzr help %s for more details and examples.\n\n"
562
545
# Add the aliases, source (plug-in) and see also links, if any
564
result += gettext(':Aliases: ')
547
result += ':Aliases: '
565
548
result += ', '.join(self.aliases) + '\n'
566
549
plugin_name = self.plugin_name()
567
550
if plugin_name is not None:
568
result += gettext(':From: plugin "%s"\n') % plugin_name
551
result += ':From: plugin "%s"\n' % plugin_name
569
552
see_also = self.get_see_also(additional_see_also)
571
554
if not plain and see_also_as_links:
667
651
def run_argv_aliases(self, argv, alias_argv=None):
668
652
"""Parse the command line and run with extra aliases in alias_argv."""
669
653
args, opts = parse_args(self, argv, alias_argv)
672
655
# Process the standard options
673
656
if 'help' in opts: # e.g. bzr add --help
674
self.outf.write(self.get_help_text())
657
sys.stdout.write(self.get_help_text())
676
659
if 'usage' in opts: # e.g. bzr add --usage
677
self.outf.write(self.get_help_text(verbose=False))
660
sys.stdout.write(self.get_help_text(verbose=False))
679
662
trace.set_verbosity_level(option._verbosity_level)
680
663
if 'verbose' in self.supported_std_options:
695
678
all_cmd_args = cmdargs.copy()
696
679
all_cmd_args.update(cmdopts)
699
return self.run(**all_cmd_args)
701
# reset it, so that other commands run in the same process won't
702
# inherit state. Before we reset it, log any activity, so that it
703
# gets properly tracked.
704
ui.ui_factory.log_transport_activity(
705
display=('bytes' in debug.debug_flags))
706
trace.set_verbosity_level(0)
708
def _setup_run(self):
709
"""Wrap the defined run method on self with a cleanup.
711
This is called by __init__ to make the Command be able to be run
712
by just calling run(), as it could be before cleanups were added.
714
If a different form of cleanups are in use by your Command subclass,
715
you can override this method.
718
def run(*args, **kwargs):
719
self._operation = cleanup.OperationWithCleanups(class_run)
721
return self._operation.run_simple(*args, **kwargs)
726
@deprecated_method(deprecated_in((2, 2, 0)))
683
return self.run_direct(**all_cmd_args)
727
685
def run_direct(self, *args, **kwargs):
728
"""Deprecated thunk from bzrlib 2.1."""
729
return self.run(*args, **kwargs)
686
"""Call run directly with objects (without parsing an argv list)."""
687
return self._operation.run_simple(*args, **kwargs)
732
690
"""Actually run the command.
737
695
Return 0 or None if the command was successful, or a non-zero
738
696
shell error code if not. It's OK for this method to allow
739
697
an exception to raise up.
741
This method is automatically wrapped by Command.__init__ with a
742
cleanup operation, stored as self._operation. This can be used
743
via self.add_cleanup to perform automatic cleanups at the end of
746
The argument for run are assembled by introspection. So for instance,
747
if your command takes an argument files, you would declare::
749
def run(self, files=None):
752
699
raise NotImplementedError('no implementation of command %r'
795
730
These are all empty initially, because by default nothing should get
798
Hooks.__init__(self, "bzrlib.commands", "Command.hooks")
799
self.add_hook('extend_command',
734
self.create_hook(HookPoint('extend_command',
800
735
"Called after creating a command object to allow modifications "
801
736
"such as adding or removing options, docs etc. Called with the "
802
"new bzrlib.commands.Command object.", (1, 13))
803
self.add_hook('get_command',
737
"new bzrlib.commands.Command object.", (1, 13), None))
738
self.create_hook(HookPoint('get_command',
804
739
"Called when creating a single command. Called with "
805
740
"(cmd_or_None, command_name). get_command should either return "
806
741
"the cmd_or_None parameter, or a replacement Command object that "
807
742
"should be used for the command. Note that the Command.hooks "
808
743
"hooks are core infrastructure. Many users will prefer to use "
809
744
"bzrlib.commands.register_command or plugin_cmds.register_lazy.",
811
self.add_hook('get_missing_command',
746
self.create_hook(HookPoint('get_missing_command',
812
747
"Called when creating a single command if no command could be "
813
748
"found. Called with (command_name). get_missing_command should "
814
749
"either return None, or a Command object to be used for the "
816
self.add_hook('list_commands',
750
"command.", (1, 17), None))
751
self.create_hook(HookPoint('list_commands',
817
752
"Called when enumerating commands. Called with a set of "
818
753
"cmd_name strings for all the commands found so far. This set "
819
754
" is safe to mutate - e.g. to remove a command. "
820
755
"list_commands should return the updated set of command names.",
823
758
Command.hooks = CommandHooks()
1120
1045
if not opt_no_aliases:
1121
1046
alias_argv = get_alias(argv[0])
1048
user_encoding = osutils.get_user_encoding()
1049
alias_argv = [a.decode(user_encoding) for a in alias_argv]
1123
1050
argv[0] = alias_argv.pop(0)
1125
1052
cmd = argv.pop(0)
1053
# We want only 'ascii' command names, but the user may have typed
1054
# in a Unicode name. In that case, they should just get a
1055
# 'command not found' error later.
1126
1057
cmd_obj = get_cmd_object(cmd, plugins_override=not opt_builtin)
1129
1058
run = cmd_obj.run_argv_aliases
1130
1059
run_argv = [argv, alias_argv]
1290
1220
class Provider(object):
1291
"""Generic class to be overriden by plugins"""
1221
'''Generic class to be overriden by plugins'''
1293
1223
def plugin_for_command(self, cmd_name):
1294
"""Takes a command and returns the information for that plugin
1224
'''Takes a command and returns the information for that plugin
1296
1226
:return: A dictionary with all the available information
1297
for the requested plugin
1227
for the requested plugin
1299
1229
raise NotImplementedError
1302
1232
class ProvidersRegistry(registry.Registry):
1303
"""This registry exists to allow other providers to exist"""
1233
'''This registry exists to allow other providers to exist'''
1305
1235
def __iter__(self):
1306
1236
for key, provider in self.iteritems():