60
70
return DEFAULT_PLUGIN_PATH
64
"""Return a dictionary of the plugins."""
66
for name, plugin in plugins.__dict__.items():
67
if isinstance(plugin, types.ModuleType):
72
73
def disable_plugins():
73
74
"""Disable loading plugins.
75
76
Future calls to load_plugins() will be ignored.
77
# TODO: jam 20060131 This should probably also disable
83
def set_plugins_path():
84
"""Set the path for plugins to be loaded from."""
85
path = os.environ.get('BZR_PLUGIN_PATH',
86
get_default_plugin_path()).split(os.pathsep)
87
# search the plugin path before the bzrlib installed dir
88
path.append(os.path.dirname(plugins.__file__))
89
plugins.__path__ = path
81
def _strip_trailing_sep(path):
82
return path.rstrip("\\/")
85
def set_plugins_path(path=None):
86
"""Set the path for plugins to be loaded from.
88
:param path: The list of paths to search for plugins. By default,
89
path will be determined using get_standard_plugins_path.
90
if path is [], no plugins can be loaded.
93
path = get_standard_plugins_path()
94
_mod_plugins.__path__ = path
98
def _append_new_path(paths, new_path):
99
"""Append a new path if it set and not already known."""
100
if new_path is not None and new_path not in paths:
101
paths.append(new_path)
105
def get_core_plugin_path():
107
bzr_exe = bool(getattr(sys, 'frozen', None))
108
if bzr_exe: # expand path for bzr.exe
109
# We need to use relative path to system-wide plugin
110
# directory because bzrlib from standalone bzr.exe
111
# could be imported by another standalone program
112
# (e.g. bzr-config; or TortoiseBzr/Olive if/when they
113
# will become standalone exe). [bialix 20071123]
114
# __file__ typically is
115
# C:\Program Files\Bazaar\lib\library.zip\bzrlib\plugin.pyc
116
# then plugins directory is
117
# C:\Program Files\Bazaar\plugins
118
# so relative path is ../../../plugins
119
core_path = osutils.abspath(osutils.pathjoin(
120
osutils.dirname(__file__), '../../../plugins'))
121
else: # don't look inside library.zip
122
# search the plugin path before the bzrlib installed dir
123
core_path = os.path.dirname(_mod_plugins.__file__)
127
def get_site_plugin_path():
128
"""Returns the path for the site installed plugins."""
129
if sys.platform == 'win32':
130
# We don't have (yet) a good answer for windows since that is certainly
131
# related to the way we build the installers. -- vila20090821
135
from distutils.sysconfig import get_python_lib
137
# If distutuils is not available, we just don't know where they are
140
site_path = osutils.pathjoin(get_python_lib(), 'bzrlib', 'plugins')
144
def get_user_plugin_path():
145
return osutils.pathjoin(config.config_dir(), 'plugins')
148
def get_standard_plugins_path():
149
"""Determine a plugin path suitable for general use."""
150
# Ad-Hoc default: core is not overriden by site but user can overrides both
151
# The rationale is that:
152
# - 'site' comes last, because these plugins should always be available and
153
# are supposed to be in sync with the bzr installed on site.
154
# - 'core' comes before 'site' so that running bzr from sources or a user
155
# installed version overrides the site version.
156
# - 'user' comes first, because... user is always right.
157
# - the above rules clearly defines which plugin version will be loaded if
158
# several exist. Yet, it is sometimes desirable to disable some directory
159
# so that a set of plugins is disabled as once. This can be done via
160
# -site, -core, -user.
162
env_paths = os.environ.get('BZR_PLUGIN_PATH', '+user').split(os.pathsep)
163
defaults = ['+core', '+site']
165
# The predefined references
166
refs = dict(core=get_core_plugin_path(),
167
site=get_site_plugin_path(),
168
user=get_user_plugin_path())
170
# Unset paths that should be removed
171
for k,v in refs.iteritems():
173
# defaults can never mention removing paths as that will make it
174
# impossible for the user to revoke these removals.
175
if removed in env_paths:
176
env_paths.remove(removed)
181
for p in env_paths + defaults:
182
if p.startswith('+'):
183
# Resolve reference if they are known
187
# Leave them untouched otherwise, user may have paths starting
190
_append_new_path(paths, p)
192
# Get rid of trailing slashes, since Python can't handle them when
193
# it tries to import modules.
194
paths = map(_strip_trailing_sep, paths)
198
def load_plugins(path=None):
94
199
"""Load bzrlib plugins.
96
201
The environment variable BZR_PLUGIN_PATH is considered a delimited
172
if getattr(plugins, f, None):
173
mutter('Plugin name %s already loaded', f)
286
continue # We don't load __init__.py again in the plugin dir
287
elif getattr(_mod_plugins, f, None):
288
trace.mutter('Plugin name %s already loaded', f)
175
# mutter('add plugin name %s', f)
290
# trace.mutter('add plugin name %s', f)
176
291
plugin_names.add(f)
178
293
for name in plugin_names:
180
295
exec "import bzrlib.plugins.%s" % name in {}
181
296
except KeyboardInterrupt:
298
except errors.IncompatibleAPI, e:
299
trace.warning("Unable to load plugin %r. It requested API version "
300
"%s of module %s but the minimum exported version is %s, and "
301
"the maximum is %s" %
302
(name, e.wanted, e.api, e.minimum, e.current))
183
303
except Exception, e:
304
trace.warning("%s" % e)
184
305
## import pdb; pdb.set_trace()
185
306
if re.search('\.|-| ', name):
186
warning('Unable to load plugin %r from %r: '
187
'It is not a valid python module name.' % (name, d))
307
sanitised_name = re.sub('[-. ]', '_', name)
308
if sanitised_name.startswith('bzr_'):
309
sanitised_name = sanitised_name[len('bzr_'):]
310
trace.warning("Unable to load %r in %r as a plugin because the "
311
"file path isn't a valid module name; try renaming "
312
"it to %r." % (name, d, sanitised_name))
189
warning('Unable to load plugin %r from %r' % (name, d))
190
log_exception_quietly()
193
def load_from_zip(zip_name):
194
"""Load all the plugins in a zip."""
195
valid_suffixes = ('.py', '.pyc', '.pyo') # only python modules/packages
197
if '.zip' not in zip_name:
200
ziobj = zipimport.zipimporter(zip_name)
201
except zipimport.ZipImportError:
204
mutter('Looking for plugins in %r', zip_name)
208
# use zipfile to get list of files/dirs inside zip
209
z = zipfile.ZipFile(ziobj.archive)
210
namelist = z.namelist()
214
prefix = ziobj.prefix.replace('\\','/')
216
namelist = [name[ix:]
218
if name.startswith(prefix)]
220
mutter('Names in archive: %r', namelist)
222
for name in namelist:
223
if not name or name.endswith('/'):
226
# '/' is used to separate pathname components inside zip archives
229
head, tail = '', name
231
head, tail = name.rsplit('/',1)
233
# we don't need looking in subdirectories
236
base, suffix = osutils.splitext(tail)
237
if suffix not in valid_suffixes:
240
if base == '__init__':
251
if getattr(plugins, plugin_name, None):
252
mutter('Plugin name %s already loaded', plugin_name)
256
plugin = ziobj.load_module(plugin_name)
257
setattr(plugins, plugin_name, plugin)
258
mutter('Load plugin %s from zip %r', plugin_name, zip_name)
259
except zipimport.ZipImportError, e:
260
mutter('Unable to load plugin %r from %r: %s',
261
plugin_name, zip_name, str(e))
263
except KeyboardInterrupt:
266
## import pdb; pdb.set_trace()
267
warning('Unable to load plugin %r from %r'
269
log_exception_quietly()
314
trace.warning('Unable to load plugin %r from %r' % (name, d))
315
trace.log_exception_quietly()
316
if 'error' in debug.debug_flags:
317
trace.print_exception(sys.exc_info(), sys.stderr)
321
"""Return a dictionary of the plugins.
323
Each item in the dictionary is a PlugIn object.
326
for name, plugin in _mod_plugins.__dict__.items():
327
if isinstance(plugin, types.ModuleType):
328
result[name] = PlugIn(name, plugin)
332
class PluginsHelpIndex(object):
333
"""A help index that returns help topics for plugins."""
336
self.prefix = 'plugins/'
338
def get_topics(self, topic):
339
"""Search for topic in the loaded plugins.
341
This will not trigger loading of new plugins.
343
:param topic: A topic to search for.
344
:return: A list which is either empty or contains a single
345
RegisteredTopic entry.
349
if topic.startswith(self.prefix):
350
topic = topic[len(self.prefix):]
351
plugin_module_name = 'bzrlib.plugins.%s' % topic
353
module = sys.modules[plugin_module_name]
357
return [ModuleHelpTopic(module)]
360
class ModuleHelpTopic(object):
361
"""A help topic which returns the docstring for a module."""
363
def __init__(self, module):
366
:param module: The module for which help should be generated.
370
def get_help_text(self, additional_see_also=None, verbose=True):
371
"""Return a string with the help for this topic.
373
:param additional_see_also: Additional help topics to be
376
if not self.module.__doc__:
377
result = "Plugin '%s' has no docstring.\n" % self.module.__name__
379
result = self.module.__doc__
380
if result[-1] != '\n':
382
# there is code duplicated here and in bzrlib/help_topic.py's
383
# matching Topic code. This should probably be factored in
384
# to a helper function and a common base class.
385
if additional_see_also is not None:
386
see_also = sorted(set(additional_see_also))
390
result += 'See also: '
391
result += ', '.join(see_also)
395
def get_help_topic(self):
396
"""Return the modules help topic - its __name__ after bzrlib.plugins.."""
397
return self.module.__name__[len('bzrlib.plugins.'):]
400
class PlugIn(object):
401
"""The bzrlib representation of a plugin.
403
The PlugIn object provides a way to manipulate a given plugin module.
406
def __init__(self, name, module):
407
"""Construct a plugin for module."""
412
"""Get the path that this plugin was loaded from."""
413
if getattr(self.module, '__path__', None) is not None:
414
return os.path.abspath(self.module.__path__[0])
415
elif getattr(self.module, '__file__', None) is not None:
416
path = os.path.abspath(self.module.__file__)
417
if path[-4:] in ('.pyc', '.pyo'):
418
pypath = path[:-4] + '.py'
419
if os.path.isfile(pypath):
423
return repr(self.module)
426
return "<%s.%s object at %s, name=%s, module=%s>" % (
427
self.__class__.__module__, self.__class__.__name__, id(self),
428
self.name, self.module)
432
def test_suite(self):
433
"""Return the plugin's test suite."""
434
if getattr(self.module, 'test_suite', None) is not None:
435
return self.module.test_suite()
439
def load_plugin_tests(self, loader):
440
"""Return the adapted plugin's test suite.
442
:param loader: The custom loader that should be used to load additional
446
if getattr(self.module, 'load_tests', None) is not None:
447
return loader.loadTestsFromModule(self.module)
451
def version_info(self):
452
"""Return the plugin's version_tuple or None if unknown."""
453
version_info = getattr(self.module, 'version_info', None)
454
if version_info is not None:
456
if isinstance(version_info, types.StringType):
457
version_info = version_info.split('.')
458
elif len(version_info) == 3:
459
version_info = tuple(version_info) + ('final', 0)
461
# The given version_info isn't even iteratible
462
trace.log_exception_quietly()
463
version_info = (version_info,)
466
def _get__version__(self):
467
version_info = self.version_info()
468
if version_info is None or len(version_info) == 0:
471
version_string = _format_version_tuple(version_info)
472
except (ValueError, TypeError, IndexError), e:
473
trace.log_exception_quietly()
474
# try to return something usefull for bad plugins, in stead of
476
version_string = '.'.join(map(str, version_info))
477
return version_string
479
__version__ = property(_get__version__)
added
removed
bzrlib/plugin.py
