diff options
Diffstat (limited to 'cliapp/pluginmgr.py')
| -rw-r--r-- | cliapp/pluginmgr.py | 52 |
1 files changed, 26 insertions, 26 deletions
diff --git a/cliapp/pluginmgr.py b/cliapp/pluginmgr.py index 1b30932..5e99523 100644 --- a/cliapp/pluginmgr.py +++ b/cliapp/pluginmgr.py @@ -1,15 +1,15 @@ # Copyright (C) 2009-2012 Lars Wirzenius -# +# # This program is free software; you can redistribute it and/or modify # it under the terms of the GNU General Public License as published by # the Free Software Foundation; either version 2 of the License, or # (at your option) any later version. -# +# # This program is distributed in the hope that it will be useful, # but WITHOUT ANY WARRANTY; without even the implied warranty of # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the # GNU General Public License for more details. -# +# # You should have received a copy of the GNU General Public License along # with this program; if not, write to the Free Software Foundation, Inc., # 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA. @@ -37,22 +37,22 @@ from cliapp import Plugin class PluginManager(object): '''Manage plugins. - + This class finds and loads plugins, and keeps a list of them that can be accessed in various ways. - + The locations are set via the locations attribute, which is a list. - + When a plugin is loaded, an instance of its class is created. This instance is initialized using normal and keyword arguments specified - in the plugin manager attributes plugin_arguments and + in the plugin manager attributes plugin_arguments and plugin_keyword_arguments. - + The version of the application using the plugin manager is set via the application_version attribute. This defaults to '0.0.0'. - + ''' - + suffix = '_plugin.py' def __init__(self): @@ -83,14 +83,14 @@ class PluginManager(object): def find_plugin_files(self): '''Find files that may contain plugins. - + This finds all files named *_plugin.py in all locations. The returned list is sorted. - + ''' - + pathnames = [] - + for location in self.locations: try: basenames = os.listdir(location) @@ -100,14 +100,14 @@ class PluginManager(object): s = os.path.join(location, basename) if s.endswith(self.suffix) and os.path.exists(s): pathnames.append(s) - + return sorted(pathnames) def load_plugins(self): '''Load plugins from all plugin files.''' - + plugins = dict() - + for pathname in self.plugin_files: for plugin in self.load_plugin_file(pathname): if plugin.name in plugins: @@ -128,10 +128,10 @@ class PluginManager(object): name, ext = os.path.splitext(os.path.basename(pathname)) f = file(pathname, 'r') - module = imp.load_module(name, f, pathname, + module = imp.load_module(name, f, pathname, ('.py', 'r', imp.PY_SOURCE)) f.close() - + plugins = [] for dummy, member in inspect.getmembers(module, inspect.isclass): if issubclass(member, Plugin): @@ -139,37 +139,37 @@ class PluginManager(object): **self.plugin_keyword_arguments) if self.compatible_version(p.required_application_version): plugins.append(p) - + return plugins def compatible_version(self, required_application_version): '''Check that the plugin is version-compatible with the application. - + This checks the plugin's required_application_version against the declared application version and returns True if they are compatible, and False if not. - + ''' req = self.parse_version(required_application_version) app = self.parse_version(self.application_version) - + return app[0] == req[0] and app >= req def parse_version(self, version): '''Parse a string represenation of a version into list of ints.''' - + return [int(s) for s in version.split('.')] def enable_plugins(self, plugins=None): '''Enable all or selected plugins.''' - + for plugin in plugins or self.plugins: plugin.enable_wrapper() def disable_plugins(self, plugins=None): '''Disable all or selected plugins.''' - + for plugin in plugins or self.plugins: plugin.disable_wrapper() |