jp (base): new date_decoder to specify dates in arguments

sat_frontends/jp/base.py

@@ -35,6 +35,7 @@ from sat_frontends.tools.jid import JID
 from sat.tools import config
 from sat.tools.common import dynamic_import
 from sat.tools.common import uri
+from sat.tools.common import date_utils
 from sat.core import exceptions
 import sat_frontends.jp
 from sat_frontends.jp.constants import Const as C
@@ -137,6 +138,10 @@ def unicode_decoder(arg):
     return arg.decode(locale.getpreferredencoding())
 
 
+def date_decoder(arg):
+    return date_utils.date_parse_ext(arg, default_tz=date_utils.TZ_LOCAL)
+
+
 class Jp(object):
     """
     This class can be use to establish a connection with the