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diff --git a/fevenprg.py b/fevenprg.py
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+#/***************************************************************************
+#                             fevenprg.h
+#                             -----------
+#    begin                : sam nov 2 2002
+#    copyright            : (C) 1992-2004 by Fabian Padilla
+#    email                : fp@bridgethink.com
+# ***************************************************************************/
+
+# /***************************************************************************
+#  *                                                                         *
+#  *   This program is free software; you can redistribute it and/or modify  *
+#  *   it under the terms of the Foundation Public License as published by   *
+#  *   bridgethink sarl; either version 2 of the License, or                 *
+#  *   (at your option) any later version.                                   *
+#  *                                                                         *
+#  ***************************************************************************/
+
+#
+#  from C++ to python by Jeremy Zurcher <jeremy@asynk.ch>
+#
+
+"""/** evenPrg do the modification on the evenData or many evenDatas.
+
+  function : Interface for all evenPrg.
+
+  description : Must contain only the behavior to modify datas and "if" concerning the
+                modification of datas. Do not implement in a evenPrg "if" about end user
+                functionnalities. See the withepaper.pdf at www.evenja.org.
+  
+  *@author Fabian Padilla
+  */"""
+
+
+__all__ = ["FevenPrg"]
+
+
+from fportbkpevendata import FportBkpEvenData
+from evenjastrings import ACT_ERROR
+
+class FevenPrg(FportBkpEvenData):
+	""" This class is the interface for all evenPrg"""
+
+	def __init__(self):
+		FportBkpEvenData.__init__(self)	# force constructor
+		self.evenDataB = None		#/** Backup of the evenDatas that need to be sends by sendEvenData */
+	
+	def __str__(self):
+		return "\t"+FportBkpEvenData.__str__(self)+\
+				"FevenPrg - evenDataB : "+str(self.evenDataB)+"\n"
+	
+	def justDoIt(self,evenData):
+		"""/** Methods called by Fstarter */"""
+		self.evenDataB = evenData.getEvenDataB()
+		if self.evenDataB <> None:
+			evenData.setEvenDataB(self.evenDataB)
+		ret = FportBkpEvenData.justDoIt(self,evenData)
+		if self.evenDataB <> None:
+			self.evenDataB.definePortAction(ACT_ERROR)
+			self.sendEvenData(self.evenDataB)
+		return ret
+	
+	def sendEvenData(self,evenData):
+		"""/** Methods to enable all ports to sends evenDatas to a port */"""
+		if self.evenDataB == evenData:
+			self.evenDataB = None
+		FportBkpEvenData.sendEvenData(self,evenData)
+	
+	def sendEvenDataSys(self,evenData):
+		"""/** Methods to enable all ports to sends evenDatas to a port */"""
+		if self.evenDataB == evenData:
+			self.evenDataB = None
+		FportBkpEvenData.sendEvenDataSys(self,evenData)
+