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+# -*- coding: utf-8 -*-
+#
+# File: portato/gui/session.py
+# This file is part of the Portato-Project, a graphical portage-frontend.
+#
+# Copyright (C) 2008 René 'Necoro' Neumann
+# This is free software. You may redistribute copies of it under the terms of
+# the GNU General Public License version 2.
+# There is NO WARRANTY, to the extent permitted by law.
+#
+# Written by René 'Necoro' Neumann <necoro@necoro.net>
+
+from ..helper import _, debug
+
+# the current version for saved sessions
+# change this, whenever the change is incompatible with previous versions
+SESSION_VERSION = 1
+
+class SessionException (Exception):
+
+ error = _("Version mismatch.")
+ def __init__ (self, got, expected):
+ self.got = got
+ self.expected = expected
+
+ def __str__ (self):
+ return "%s %s" % (self.error, (_("Got '%d' - expected '%d'.") % (self.got, self.expected)))
+
+class OldSessionException (SessionException):
+ error = _("Current session format is too old.")
+
+class NewSessionException (SessionException):
+ error = _("Current session format is newer than this version supports.")