add an exceptions file that contain our custom exceptions

src/common/exceptions.py

+## exceptions.py
+##
+## Gajim Team:
+## - Yann Le Boulanger <asterix@lagaule.org>
+## - Vincent Hanquez <tab@snarc.org>
+## - Nikos Kouremenos <kourem@gmail.com>
+##
+##      Copyright (C) 2003-2005 Gajim Team
+##
+## 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 2 only.
+##
+## 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.
+##
+
+from common import i18n
+_ = i18n._
+
+class PysqliteNotAvailable(Exception):
+	'''sqlite2 is not installed or python bindings are missing'''
+	def __init__(self):
+		Exception.__init__(self)
+
+	def __str__(self):
+		return _('pysqlite2 (aka python-pysqlite2) dependency is missing. '\
+		'After you install pysqlite3, if you want to migrate your logs '\
+		'to the new database, please read: http://trac.gajim.org/wiki/MigrateLogToDot9DB '\
+		'Exiting...')
+
+class ServiceNotAvailable(Exception):
+	'''This exception is raised when we cannot use Gajim remotely'''
+	def __init__(self):
+		Exception.__init__(self)
+
+	def __str__(self):
+		return _('Service not available: Gajim is not running, or remote_control is False')
+
+class DbusNotSupported(Exception):
+	'''D-Bus is not installed or python bindings are missing'''
+	def __init__(self):
+		Exception.__init__(self)
+
+	def __str__(self):
+		return _('D-Bus is not present on this machine or python module is missing')
+
+class SessionBusNotPresent(Exception):
+	'''This exception indicates that there is no session daemon'''
+	def __init__(self):
+		Exception.__init__(self)
+
+	def __str__(self):
+		return _('Session bus is not available')

src/common/logger.py

@@ -22,20 +22,15 @@ import sys
 import time
 import datetime
 
+from common import exceptions
 from common import i18n
 _ = i18n._
 
 try:
 	from pysqlite2 import dbapi2 as sqlite
 except ImportError:
-	error = _('pysqlite2 (aka python-pysqlite2) dependency is missing. '\
-		'After you install pysqlite3, if you want to migrate your logs '\
-		'to the new database, please read: http://trac.gajim.org/wiki/MigrateLogToDot9DB '\
-		'Exiting...'
-		)
-	print >> sys.stderr, error
-	sys.exit()
-	
+	raise exceptions.PysqliteNotAvailable
+
 GOT_JIDS_ALREADY_IN_DB = False # see get_jids_already_in_db()
 
 if os.name == 'nt':

src/gajim-remote.py

@@ -32,6 +32,7 @@ import signal
 signal.signal(signal.SIGINT, signal.SIG_DFL) # ^C exits the application
 import traceback
 
+from common import exceptions
 from common import i18n
 
 _ = i18n._
@@ -43,34 +44,10 @@ def send_error(error_message):
 		sys.stderr.flush()
 		sys.exit(1)
 
-class ServiceNotAvailable(Exception):
-	'''This exception is raised when we cannot use Gajim remotely'''
-	def __init__(self):
-		Exception.__init__(self)
-
-	def __str__(self):
-		return _('Service not available: Gajim is not running, or remote_control is False')
-
-class DbusNotSupported(Exception):
-	'''D-Bus is not installed or python bindings are missing'''
-	def __init__(self):
-		Exception.__init__(self)
-
-	def __str__(self):
-		return _('D-Bus is not present on this machine or python module is missing')
-
-class SessionBusNotPresent(Exception):
-	'''This exception indicates that there is no session daemon'''
-	def __init__(self):
-		Exception.__init__(self)
-
-	def __str__(self):
-		return _('Session bus is not available')
-
 try:
 	import dbus
 except:
-	raise DbusNotSupported
+	raise exceptions.DbusNotSupported
 
 _version = getattr(dbus, 'version', (0, 20, 0))
 if _version[1] >= 41:
@@ -236,7 +213,7 @@ class GajimRemote:
 				id = self.sbus.add_signal_receiver(self.show_vcard_info, 
 					'VcardInfo', INTERFACE, SERVICE, OBJ_PATH)
 			except Exception, e:
-				raise ServiceNotAvailable
+				raise exceptions.ServiceNotAvailable
 		
 		res = self.call_remote_method()
 		self.print_result(res)
@@ -282,7 +259,7 @@ class GajimRemote:
 		try:
 			self.sbus = dbus.SessionBus()
 		except:
-			raise SessionBusNotPresent
+			raise exceptions.SessionBusNotPresent
 		
 		if _version[1] >= 30:
 			obj = self.sbus.get_object(SERVICE, OBJ_PATH)
@@ -566,7 +543,7 @@ Type "%s help %s" for more info') % (args[argv_len][0], BASENAME, self.command))
 			return res
 		except Exception, e:
 			print str(e)
-			raise ServiceNotAvailable
+			raise exceptions.ServiceNotAvailable
 		return None
 
 if __name__ == '__main__':