111 lines
3.1 KiB
Python
111 lines
3.1 KiB
Python
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# $Id$
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#
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# Copyright 2006 sense.lab e.V.
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#
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# This file is part of the CryptoBox.
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#
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# The CryptoBox is free software; you can redistribute it and/or modify
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# it under the terms of the GNU General Public License as published by
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# the Free Software Foundation; either version 2 of the License, or
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# (at your option) any later version.
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#
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# The CryptoBox is distributed in the hope that it will be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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# GNU General Public License for more details.
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#
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# You should have received a copy of the GNU General Public License
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# along with the CryptoBox; if not, write to the Free Software
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# Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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#
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"""Manages the pluggable features of the CryptoBox.
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"""
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__revision__ = "$Id"
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import os
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class PluginManager:
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"""manage available plugins"""
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def __init__(self, cbox, plugin_dirs=".", site_class=None):
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self.cbox = cbox
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self.site = site_class
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if hasattr(plugin_dirs, "__iter__"):
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self.plugin_dirs = [os.path.abspath(d) for d in plugin_dirs]
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else:
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self.plugin_dirs = [os.path.abspath(plugin_dirs)]
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self.plugin_list = self.__get_all_plugins()
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def get_plugins(self):
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"""Return a list of all feature instances.
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"""
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return self.plugin_list[:]
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def get_plugin(self, name):
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"""Return the specified feature as an instance.
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"""
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for plugin in self.plugin_list[:]:
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if plugin.get_name() == name:
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return plugin
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return None
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def __get_all_plugins(self):
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"""Return all available features as instances.
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"""
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plist = []
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for plfile in self.__get_plugin_files():
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plist.append(self.__get_plugin_class(os.path.basename(plfile)[:-3]))
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return plist
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def __get_plugin_class(self, name):
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"""Return a instance object of the give feature.
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"""
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import imp
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for plfile in self.__get_plugin_files():
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if name == os.path.basename(plfile)[:-3]:
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try:
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pl_class = getattr(imp.load_source(name, plfile), name)
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except AttributeError:
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return None
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return pl_class(self.cbox, os.path.dirname(plfile), self.site)
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else:
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return None
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def __get_plugin_files(self):
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"""Retrieve all python files that may potentially be a feature.
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"""
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result = []
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if self.cbox and self.cbox.prefs["Main"]["DisabledPlugins"]:
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disabled = self.cbox.prefs["Main"]["DisabledPlugins"]
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else:
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disabled = []
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for pdir in [os.path.abspath(e) for e in self.plugin_dirs
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if os.access(e, os.R_OK) and os.path.isdir(e)]:
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for plname in [f for f in os.listdir(pdir)]:
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if plname in disabled:
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if self.cbox:
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self.cbox.log.info(
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"skipped plugin '%s' (disabled via config)" % plname)
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continue
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pldir = os.path.join(pdir, plname)
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plfile = os.path.join(pldir, plname + ".py")
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if os.path.isfile(plfile) and os.access(plfile, os.R_OK):
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result.append(plfile)
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return result
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if __name__ == "__main__":
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MANAGER = PluginManager(None, "../plugins")
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for one_plugin in MANAGER.get_plugins():
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if not one_plugin is None:
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print "Plugin: %s" % one_plugin.get_name()
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