/usr/lib/python3/dist-packages/pyutilib/component/config/env_config.py is in python3-pyutilib 5.3.5-1.
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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.
# _________________________________________________________________________
"""A plugin that supports configuration of environment options."""
import os.path
import os
import re
import logging
from pyutilib.component.config.options import *
logger = logging.getLogger('pyutilib.component.core.pca')
class IEnvironmentConfig(Interface):
"""Interface for environment configuration."""
def get_option(self, option):
"""Return the value of the specified option."""
def matches(self, namespace):
"""
Returns a tuple (flag,count). The flag is true if this
environment is a parent of the specified namespace. If the flag is
true, then the count is the number of levels in the namespace.
"""
class EnvironmentConfig(Plugin):
"""A plugin that supports configuration of environment options."""
implements(IEnvironmentConfig)
implements(IPluginLoadPath)
def __init__(self, namespace):
self.namespace = namespace
self.p = re.compile(namespace)
declare_option("options", cls=DictOption, section=namespace)
def get_option(self, option):
try:
return getattr(self.options, option)
except AttributeError:
return None
def matches(self, namespace):
if self.p.match(namespace) is None:
return (False,0)
return (True, namespace.count('.')+1)
def get_load_path(self):
ans = []
#
# Look for load_path in the environment
#
try:
ans.append( os.path.normcase(os.path.realpath(self.options.load_path )) )
except OptionError:
pass
except AttributeError:
pass
#
# Look for the $HOME/.$name/plugin directory
#
if "HOME" in os.environ:
dir = os.path.normcase(os.path.realpath(os.path.join(os.environ["HOME"], "."+self.namespace, "plugins")))
if os.path.exists(dir):
ans.append(dir)
#
# Look for the $PLUGINPATH environment
#
if "PLUGINPATH" in os.environ:
tmp = os.environ["PLUGINPATH"]
if ';' in tmp:
ans += tmp.split(';')
elif ':' in tmp:
ans += tmp.split(':')
else:
ans += re.split('[ \t]+',tmp)
if __debug__ and logger.isEnabledFor(logging.DEBUG):
logger.debug("Created load path: %s" % ans)
return ans
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