/usr/lib/python3/dist-packages/pyutilib/component/loader/plugin_eggLoader.py is in python3-pyutilib 5.3.5-1.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
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#
# PyUtilib: A Python utility library.
# Copyright (c) 2008 Sandia Corporation.
# This software is distributed under the BSD License.
# Under the terms of Contract DE-AC04-94AL85000 with Sandia Corporation,
# the U.S. Government retains certain rights in this software.
# _________________________________________________________________________
# This software is adapted from the Trac software (specifically, the trac.core
# module. The Trac copyright statement is included below.
__all__ = ['EggLoader']
import os
import sys
import logging
from pyutilib.component.core import *
from pyutilib.component.config import *
try:
if not 'pkg_resources' in sys.modules:
#
# Avoid a re-import, which causes setup.py warnings...
#
import pkg_resources
from pkg_resources import working_set, DistributionNotFound, VersionConflict, UnknownExtra, Environment
pkg_resources_avail=True
def pkg_environment(path):
return Environment(path)
except ImportError:
def pkg_environment(path):
return None
pkg_resources_avail=False
logger = logging.getLogger('pyutilib.component.core.pca')
class EggLoader(ManagedPlugin):
"""
Loader that looks for Python egg files in the plugins directories.
These files get exampled with the pkg_resources package, and
Plugin classes are loaded.
Note: this plugin should not be directly constructed. Instead,
the user should employ the PluginFactory_EggLoader function.
"""
implements(IPluginLoader, service=True)
def __init__(self, **kwds):
"""EggLoader constructor. The 'namespace' keyword option is
required."""
if 'name' not in kwds:
kwds['name'] = "EggLoader."+kwds['namespace']
super(EggLoader,self).__init__(**kwds)
self.entry_point_name = kwds['namespace']+".plugins"
if not pkg_resources_avail:
logger.warning('A dummy EggLoader service is being constructed, because the pkg_resources package is not available on this machine.')
def load(self, env, search_path, disable_re, name_re):
generate_debug_messages = __debug__ and env.log.isEnabledFor(logging.DEBUG)
if not pkg_resources_avail:
if generate_debug_messages:
env.log.debug('The EggLoader service is terminating early because the pkg_resources package is not available on this machine.')
return
env.log.info('BEGIN - Loading plugins with an EggLoader service')
distributions, errors = working_set.find_plugins(
pkg_environment(search_path)
)
for dist in distributions:
if name_re.match(str(dist)):
if generate_debug_messages:
env.log.debug('Adding plugin %r from %r', dist, dist.location)
working_set.add(dist)
else:
if generate_debug_messages:
env.log.debug('Ignoring plugin %r from %r', dist, dist.location)
def _log_error(item, e):
gen_debug = __debug__ and env.log.isEnabledFor(logging.DEBUG)
if isinstance(e, DistributionNotFound):
if gen_debug:
env.log.debug('Skipping "%s": ("%s" not found)', item, e)
elif isinstance(e, VersionConflict):
if gen_debug:
env.log.debug('Skipping "%s": (version conflict "%s")',
item, e)
elif isinstance(e, UnknownExtra):
env.log.error('Skipping "%s": (unknown extra "%s")', item, e)
elif isinstance(e, ImportError):
env.log.error('Skipping "%s": (can\'t import "%s")', item, e)
else:
env.log.error('Skipping "%s": (error "%s")', item, e)
for dist, e in errors.items():
_log_error(dist, e)
for entry in working_set.iter_entry_points(self.entry_point_name):
if generate_debug_messages:
env.log.debug('Loading %r from %r', entry.name,
entry.dist.location)
try:
entry.load(require=True)
except (ImportError, DistributionNotFound, VersionConflict,
UnknownExtra):
e = sys.exc_info()[1]
_log_error(entry, e)
else:
if not disable_re.match(os.path.dirname(entry.module_name)) is None:
#_enable_plugin(env, entry.module_name)
pass
env.log.info('END - Loading plugins with an EggLoader service')
# Copyright (C) 2005-2008 Edgewall Software
# Copyright (C) 2005-2006 Christopher Lenz <cmlenz@gmx.de>
# All rights reserved.
#
# This software is licensed as described in the file COPYING, which
# you should have received as part of this distribution. The terms
# are also available at http://trac.edgewall.org/wiki/TracLicense.
#
# This software consists of voluntary contributions made by many
# individuals. For the exact contribution history, see the revision
# history and logs, available at http://trac.edgewall.org/log/.
#
# Author: Christopher Lenz <cmlenz@gmx.de>
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