112 lines
3.8 KiB
Python
112 lines
3.8 KiB
Python
# -*- coding: utf-8 -*-
|
|
|
|
"""
|
|
Copyright(C) 2010 Romain Bignon
|
|
|
|
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, version 3 of the License.
|
|
|
|
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., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
|
|
|
|
"""
|
|
|
|
import re
|
|
import os
|
|
from ConfigParser import SafeConfigParser
|
|
from logging import warning, debug
|
|
from types import ClassType
|
|
|
|
import weboob.backends as backends
|
|
from weboob.backend import Backend
|
|
|
|
class Module:
|
|
def __init__(self, name, module):
|
|
self.name = name
|
|
self.module = module
|
|
self.klass = None
|
|
for attrname in dir(self.module):
|
|
attr = getattr(self.module, attrname)
|
|
if isinstance(attr, ClassType) and issubclass(attr, Backend) and attr != Backend:
|
|
self.klass = attr
|
|
|
|
if not self.klass:
|
|
raise ImportError("This is not a backend module (no Backend class found)")
|
|
|
|
def get_name(self):
|
|
return self.klass.NAME
|
|
|
|
def has_caps(self, *caps):
|
|
for c in caps:
|
|
if issubclass(self.klass, c):
|
|
return True
|
|
return False
|
|
|
|
def create_backend(self, weboob, name, config):
|
|
return self.klass(weboob, name, config)
|
|
|
|
class ModulesLoader:
|
|
def __init__(self):
|
|
self.modules = {}
|
|
|
|
def load(self):
|
|
path = backends.__path__[0]
|
|
regexp = re.compile('^%s/([\w\d_]+)$' % path)
|
|
for root, dirs, files in os.walk(path):
|
|
m = regexp.match(root)
|
|
if m and '__init__.py' in files:
|
|
self.load_module('weboob.backends.%s' % m.group(1))
|
|
|
|
def load_module(self, name):
|
|
try:
|
|
module = Module(name, __import__(name, fromlist=[name]))
|
|
except ImportError, e:
|
|
warning('Unable to load module %s: %s' % (name, e))
|
|
return
|
|
if name in self.modules:
|
|
warning('Module "%s" is already loaded (%s)' % self.modules[name].module)
|
|
return
|
|
self.modules[module.get_name()] = module
|
|
debug('Loaded module %s (%s)' % (name, module.module.__name__))
|
|
|
|
def load_backends(self, confpath, caps, names):
|
|
config = SafeConfigParser()
|
|
config.read(confpath)
|
|
backends = {}
|
|
for name in config.sections():
|
|
params = dict(config.items(name))
|
|
try:
|
|
module = self.modules[params['_type']]
|
|
except KeyError:
|
|
warning('Unable to find module %s', name)
|
|
continue
|
|
|
|
# Check conditions
|
|
if (not caps is None and not module.has_caps(caps)) or \
|
|
(not names is None and not module.name in name):
|
|
continue
|
|
|
|
try:
|
|
backends[name] = module.create_backend(self, name, params)
|
|
except Exception, e:
|
|
warning('Unable to load %s backend: %s' % (name, e))
|
|
|
|
return backends
|
|
|
|
def load_modules_as_backends(self, caps, names):
|
|
backends = {}
|
|
for name, module in self.modules.iteritems():
|
|
if (caps is None or module.has_caps(caps)) and \
|
|
(names is None or module.name in names):
|
|
try:
|
|
backends[module.name] = module.create_backend(self, module.name, {})
|
|
except Exception, e:
|
|
warning('Unable to load %s backend: %s' % (name, e))
|
|
return backends
|