new backends storage system

weboob/tools/storage.py

@@ -0,0 +1,58 @@
+# -*- 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.
+
+"""
+
+from logging import debug
+
+class IStorage:
+    def load(self, backend, default={}):
+        raise NotImplementedError()
+
+    def save(self, backend):
+        raise NotImplementedError()
+
+    def set(self, backend, *args):
+        raise NotImplementedError()
+
+    def get(self, backend, *args, **kwargs):
+        raise NotImplementedError()
+
+try:
+    from .config.yamlconfig import YamlConfig, ConfigError
+except ImportError, e:
+    debug('Import error for weboob.tools.config.yamlconfig: %s' % e)
+else:
+    class StandardStorage(IStorage):
+        def __init__(self, path):
+            self.config = YamlConfig(path)
+            self.config.load()
+
+        def load(self, backend, default={}):
+            d = self.config.values.get(backend, {})
+            self.config.values[backend] = default.copy()
+            self.config.values[backend].update(d)
+
+        def save(self):
+            self.config.save()
+
+        def set(self, backend, *args):
+            self.config.set(backend, self.backends[backend])
+
+        def get(self, backend, *args, **kwargs):
+            return self.config.get(backend, *args, **kwargs)