80
69
class CommandRegistry(registry.Registry):
70
"""Special registry mapping command names to command classes.
72
:ivar overridden_registry: Look in this registry for commands being
73
overridden by this registry. This can be used to tell plugin commands
74
about the builtin they're decorating.
78
registry.Registry.__init__(self)
79
self.overridden_registry = None
80
# map from aliases to the real command that implements the name
83
def get(self, command_name):
84
real_name = self._alias_dict.get(command_name, command_name)
85
return registry.Registry.get(self, real_name)
83
88
def _get_name(command_name):
122
134
key = self._get_name(command_name)
123
135
registry.Registry.register_lazy(self, key, module_name, command_name,
124
136
info=CommandInfo(aliases))
138
self._alias_dict[a] = key
127
141
plugin_cmds = CommandRegistry()
142
builtin_command_registry = CommandRegistry()
143
plugin_cmds.overridden_registry = builtin_command_registry
130
146
def register_command(cmd, decorate=False):
147
"""Register a plugin command.
149
Should generally be avoided in favor of lazy registration.
131
151
global plugin_cmds
132
152
return plugin_cmds.register(cmd, decorate)
317
345
summary, then a complete description of the command. A grammar
318
346
description will be inserted.
321
Other accepted names for this command.
324
List of argument forms, marked with whether they are optional,
329
['to_location', 'from_branch?', 'file*']
331
'to_location' is required
332
'from_branch' is optional
333
'file' can be specified 0 or more times
336
List of options that may be given for this command. These can
337
be either strings, referring to globally-defined options,
338
or option objects. Retrieve through options().
341
If true, this command isn't advertised. This is typically
348
:cvar aliases: Other accepted names for this command.
350
:cvar takes_args: List of argument forms, marked with whether they are
351
optional, repeated, etc. Examples::
353
['to_location', 'from_branch?', 'file*']
355
* 'to_location' is required
356
* 'from_branch' is optional
357
* 'file' can be specified 0 or more times
359
:cvar takes_options: List of options that may be given for this command.
360
These can be either strings, referring to globally-defined options, or
361
option objects. Retrieve through options().
363
:cvar hidden: If true, this command isn't advertised. This is typically
342
364
for commands intended for expert users.
345
Command objects will get a 'outf' attribute, which has been
346
setup to properly handle encoding of unicode strings.
347
encoding_type determines what will happen when characters cannot
349
strict - abort if we cannot decode
350
replace - put in a bogus character (typically '?')
351
exact - do not encode sys.stdout
353
NOTE: by default on Windows, sys.stdout is opened as a text
354
stream, therefore LF line-endings are converted to CRLF.
355
When a command uses encoding_type = 'exact', then
356
sys.stdout is forced to be a binary stream, and line-endings
366
:cvar encoding_type: Command objects will get a 'outf' attribute, which has
367
been setup to properly handle encoding of unicode strings.
368
encoding_type determines what will happen when characters cannot be
371
* strict - abort if we cannot decode
372
* replace - put in a bogus character (typically '?')
373
* exact - do not encode sys.stdout
375
NOTE: by default on Windows, sys.stdout is opened as a text stream,
376
therefore LF line-endings are converted to CRLF. When a command uses
377
encoding_type = 'exact', then sys.stdout is forced to be a binary
378
stream, and line-endings will not mangled.
381
A string indicating the real name under which this command was
382
invoked, before expansion of aliases.
383
(This may be None if the command was constructed and run in-process.)
359
385
:cvar hooks: An instance of CommandHooks.
387
:cvar __doc__: The help shown by 'bzr help command' for this command.
388
This is set by assigning explicitly to __doc__ so that -OO can
392
__doc__ = "My help goes here"
363
396
takes_options = []
364
397
encoding_type = 'strict'
368
403
def __init__(self):
369
404
"""Construct an instance of this command."""
370
if self.__doc__ == Command.__doc__:
371
warn("No help message set for %r" % self)
372
405
# List of standard options directly supported
373
406
self.supported_std_options = []
374
self._operation = cleanup.OperationWithCleanups(self.run)
376
409
def add_cleanup(self, cleanup_func, *args, **kwargs):
377
410
"""Register a function to call after self.run returns or raises.
390
423
This is useful for releasing expensive or contentious resources (such
391
424
as write locks) before doing further work that does not require those
392
resources (such as writing results to self.outf).
425
resources (such as writing results to self.outf). Note though, that
426
as it releases all resources, this may release locks that the command
427
wants to hold, so use should be done with care.
394
429
self._operation.cleanup_now()
396
@deprecated_method(deprecated_in((2, 1, 0)))
397
def _maybe_expand_globs(self, file_list):
398
"""Glob expand file_list if the platform does not do that itself.
400
Not used anymore, now that the bzr command-line parser globs on
403
:return: A possibly empty list of unicode paths.
405
Introduced in bzrlib 0.18.
409
431
def _usage(self):
410
432
"""Return single-line grammar for this command.
439
461
usage help (e.g. Purpose, Usage, Options) with a
440
462
message explaining how to obtain full help.
465
i18n.install() # Install i18n only for get_help_text for now.
442
466
doc = self.help()
444
raise NotImplementedError("sorry, no detailed help yet for %r" % self.name())
468
# Note: If self.gettext() translates ':Usage:\n', the section will
469
# be shown after "Description" section and we don't want to
470
# translate the usage string.
471
# Though, bzr export-pot don't exports :Usage: section and it must
473
doc = self.gettext(doc)
475
doc = gettext("No help for this command.")
446
477
# Extract the summary (purpose) and sections out from the text
447
478
purpose,sections,order = self._get_help_parts(doc)
466
497
# XXX: optparse implicitly rewraps the help, and not always perfectly,
467
498
# so we get <https://bugs.launchpad.net/bzr/+bug/249908>. -- mbp
469
options = option.get_optparser(self.options()).format_option_help()
470
# XXX: According to the spec, ReST option lists actually don't support
471
# options like --1.9 so that causes syntax errors (in Sphinx at least).
472
# As that pattern always appears in the commands that break, we trap
473
# on that and then format that block of 'format' options as a literal
475
if not plain and options.find(' --1.9 ') != -1:
500
parser = option.get_optparser(self.options())
501
options = parser.format_option_help()
502
# FIXME: According to the spec, ReST option lists actually don't
503
# support options like --1.14 so that causes syntax errors (in Sphinx
504
# at least). As that pattern always appears in the commands that
505
# break, we trap on that and then format that block of 'format' options
506
# as a literal block. We use the most recent format still listed so we
507
# don't have to do that too often -- vila 20110514
508
if not plain and options.find(' --1.14 ') != -1:
476
509
options = options.replace(' format:\n', ' format::\n\n', 1)
477
510
if options.startswith('Options:'):
478
result += ':' + options
479
elif options.startswith('options:'):
480
# Python 2.4 version of optparse
481
result += ':Options:' + options[len('options:'):]
511
result += gettext(':Options:%s') % (options[len('options:'):],)
483
513
result += options
489
519
if sections.has_key(None):
490
520
text = sections.pop(None)
491
521
text = '\n '.join(text.splitlines())
492
result += ':%s:\n %s\n\n' % ('Description',text)
522
result += gettext(':Description:\n %s\n\n') % (text,)
494
524
# Add the custom sections (e.g. Examples). Note that there's no need
495
525
# to indent these as they must be indented already in the source.
497
527
for label in order:
498
if sections.has_key(label):
499
result += ':%s:\n%s\n' % (label,sections[label])
528
if label in sections:
529
result += ':%s:\n%s\n' % (label, sections[label])
502
result += ("See bzr help %s for more details and examples.\n\n"
532
result += (gettext("See bzr help %s for more details and examples.\n\n")
505
535
# Add the aliases, source (plug-in) and see also links, if any
507
result += ':Aliases: '
537
result += gettext(':Aliases: ')
508
538
result += ', '.join(self.aliases) + '\n'
509
539
plugin_name = self.plugin_name()
510
540
if plugin_name is not None:
511
result += ':From: plugin "%s"\n' % plugin_name
541
result += gettext(':From: plugin "%s"\n') % plugin_name
512
542
see_also = self.get_see_also(additional_see_also)
514
544
if not plain and see_also_as_links:
611
641
def run_argv_aliases(self, argv, alias_argv=None):
612
642
"""Parse the command line and run with extra aliases in alias_argv."""
613
643
args, opts = parse_args(self, argv, alias_argv)
615
646
# Process the standard options
616
647
if 'help' in opts: # e.g. bzr add --help
617
sys.stdout.write(self.get_help_text())
648
self.outf.write(self.get_help_text())
619
650
if 'usage' in opts: # e.g. bzr add --usage
620
sys.stdout.write(self.get_help_text(verbose=False))
651
self.outf.write(self.get_help_text(verbose=False))
622
653
trace.set_verbosity_level(option._verbosity_level)
623
654
if 'verbose' in self.supported_std_options:
638
668
all_cmd_args = cmdargs.copy()
639
669
all_cmd_args.update(cmdopts)
643
return self.run_direct(**all_cmd_args)
645
def run_direct(self, *args, **kwargs):
646
"""Call run directly with objects (without parsing an argv list)."""
647
return self._operation.run_simple(*args, **kwargs)
672
return self.run(**all_cmd_args)
674
# reset it, so that other commands run in the same process won't
675
# inherit state. Before we reset it, log any activity, so that it
676
# gets properly tracked.
677
ui.ui_factory.log_transport_activity(
678
display=('bytes' in debug.debug_flags))
679
trace.set_verbosity_level(0)
681
def _setup_run(self):
682
"""Wrap the defined run method on self with a cleanup.
684
This is called by __init__ to make the Command be able to be run
685
by just calling run(), as it could be before cleanups were added.
687
If a different form of cleanups are in use by your Command subclass,
688
you can override this method.
691
def run(*args, **kwargs):
692
self._operation = cleanup.OperationWithCleanups(class_run)
694
return self._operation.run_simple(*args, **kwargs)
650
700
"""Actually run the command.
655
705
Return 0 or None if the command was successful, or a non-zero
656
706
shell error code if not. It's OK for this method to allow
657
707
an exception to raise up.
709
This method is automatically wrapped by Command.__init__ with a
710
cleanup operation, stored as self._operation. This can be used
711
via self.add_cleanup to perform automatic cleanups at the end of
714
The argument for run are assembled by introspection. So for instance,
715
if your command takes an argument files, you would declare::
717
def run(self, files=None):
659
720
raise NotImplementedError('no implementation of command %r'
690
763
These are all empty initially, because by default nothing should get
694
self.create_hook(HookPoint('extend_command',
766
Hooks.__init__(self, "bzrlib.commands", "Command.hooks")
767
self.add_hook('extend_command',
695
768
"Called after creating a command object to allow modifications "
696
769
"such as adding or removing options, docs etc. Called with the "
697
"new bzrlib.commands.Command object.", (1, 13), None))
698
self.create_hook(HookPoint('get_command',
770
"new bzrlib.commands.Command object.", (1, 13))
771
self.add_hook('get_command',
699
772
"Called when creating a single command. Called with "
700
773
"(cmd_or_None, command_name). get_command should either return "
701
774
"the cmd_or_None parameter, or a replacement Command object that "
702
775
"should be used for the command. Note that the Command.hooks "
703
776
"hooks are core infrastructure. Many users will prefer to use "
704
777
"bzrlib.commands.register_command or plugin_cmds.register_lazy.",
706
self.create_hook(HookPoint('get_missing_command',
779
self.add_hook('get_missing_command',
707
780
"Called when creating a single command if no command could be "
708
781
"found. Called with (command_name). get_missing_command should "
709
782
"either return None, or a Command object to be used for the "
710
"command.", (1, 17), None))
711
self.create_hook(HookPoint('list_commands',
784
self.add_hook('list_commands',
712
785
"Called when enumerating commands. Called with a set of "
713
786
"cmd_name strings for all the commands found so far. This set "
714
787
" is safe to mutate - e.g. to remove a command. "
715
788
"list_commands should return the updated set of command names.",
718
791
Command.hooks = CommandHooks()
736
options, args = parser.parse_args(args)
809
# for python 2.5 and later, optparse raises this exception if a non-ascii
810
# option name is given. See http://bugs.python.org/issue2931
812
options, args = parser.parse_args(args)
813
except UnicodeEncodeError,e:
814
raise errors.BzrCommandError(
815
gettext('Only ASCII permitted in option names'))
737
817
opts = dict([(k, v) for k, v in options.__dict__.iteritems() if
738
818
v is not option.OptionParser.DEFAULT_VALUE])
739
819
return args, opts
756
836
argdict[argname + '_list'] = None
757
837
elif ap[-1] == '+':
759
raise errors.BzrCommandError("command %r needs one or more %s"
760
% (cmd, argname.upper()))
839
raise errors.BzrCommandError(gettext(
840
"command {0!r} needs one or more {1}").format(
841
cmd, argname.upper()))
762
843
argdict[argname + '_list'] = args[:]
764
845
elif ap[-1] == '$': # all but one
765
846
if len(args) < 2:
766
raise errors.BzrCommandError("command %r needs one or more %s"
767
% (cmd, argname.upper()))
847
raise errors.BzrCommandError(
848
gettext("command {0!r} needs one or more {1}").format(
849
cmd, argname.upper()))
768
850
argdict[argname + '_list'] = args[:-1]
771
853
# just a plain arg
774
raise errors.BzrCommandError("command %r requires argument %s"
775
% (cmd, argname.upper()))
856
raise errors.BzrCommandError(
857
gettext("command {0!r} requires argument {1}").format(
858
cmd, argname.upper()))
777
860
argdict[argname] = args.pop(0)
780
raise errors.BzrCommandError("extra argument to command %s: %s"
863
raise errors.BzrCommandError( gettext(
864
"extra argument to command {0}: {1}").format(
868
952
def apply_lsprofiled(filename, the_callable, *args, **kwargs):
869
953
from bzrlib.lsprof import profile
870
ret, stats = profile(exception_to_return_code, the_callable, *args, **kwargs)
954
ret, stats = profile(exception_to_return_code, the_callable,
872
957
if filename is None:
875
960
stats.save(filename)
876
trace.note('Profile data written to "%s".', filename)
961
trace.note(gettext('Profile data written to "%s".'), filename)
880
@deprecated_function(deprecated_in((2, 2, 0)))
881
def shlex_split_unicode(unsplit):
882
return cmdline.split(unsplit)
885
965
def get_alias(cmd, config=None):
886
966
"""Return an expanded alias, or None if no alias exists.
1005
1094
if not opt_no_aliases:
1006
1095
alias_argv = get_alias(argv[0])
1008
user_encoding = osutils.get_user_encoding()
1009
alias_argv = [a.decode(user_encoding) for a in alias_argv]
1010
1097
argv[0] = alias_argv.pop(0)
1012
1099
cmd = argv.pop(0)
1013
# We want only 'ascii' command names, but the user may have typed
1014
# in a Unicode name. In that case, they should just get a
1015
# 'command not found' error later.
1017
1100
cmd_obj = get_cmd_object(cmd, plugins_override=not opt_builtin)
1018
1103
run = cmd_obj.run_argv_aliases
1019
1104
run_argv = [argv, alias_argv]
1179
1267
class Provider(object):
1180
'''Generic class to be overriden by plugins'''
1268
"""Generic class to be overriden by plugins"""
1182
1270
def plugin_for_command(self, cmd_name):
1183
'''Takes a command and returns the information for that plugin
1271
"""Takes a command and returns the information for that plugin
1185
1273
:return: A dictionary with all the available information
1186
for the requested plugin
1274
for the requested plugin
1188
1276
raise NotImplementedError
1191
1279
class ProvidersRegistry(registry.Registry):
1192
'''This registry exists to allow other providers to exist'''
1280
"""This registry exists to allow other providers to exist"""
1194
1282
def __iter__(self):
1195
1283
for key, provider in self.iteritems():