old_contents: """CardConnectionObserver interface.
  
  CardConnectionObserver is a base class for objects that are to be notified
  upon CardConnection events.
  
  __author__ = "http://www.gemalto.com"
  
  Copyright 2001-2010 gemalto
  Author: Jean-Daniel Aussel, mailto:jean-daniel.aussel@gemalto.com
  
  This file is part of pyscard.
  
  pyscard is free software; you can redistribute it and/or modify
  it under the terms of the GNU Lesser General Public License as published by
  the Free Software Foundation; either version 2.1 of the License, or
  (at your option) any later version.
  
  pyscard 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 Lesser General Public License for more details.
  
  You should have received a copy of the GNU Lesser General Public License
  along with pyscard; if not, write to the Free Software
  Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
  """
  
  from smartcard.util import toHexString
  from smartcard.Observer import Observer
  
  # ReaderObserver interface
  class CardConnectionObserver( Observer ):
      """
      CardConnectionObserver is a base class for objects that are to be notified
      upon CardConnection events.
      """
  
      def update( self, cardconnection, cardconnectionevent ):
          """Called upon CardConnection event.
  
          cardconnection:         the observed card connection object
          cardconnectionevent:    the CardConnectionEvent sent by the connection
          """
          pass
  
  
  class ConsoleCardConnectionObserver( CardConnectionObserver ):
      def update( self, cardconnection, ccevent ):
  
          if 'connect'==ccevent.type:
              print 'connecting to ' + cardconnection.getReader()
  
          elif 'disconnect'==ccevent.type:
              print 'disconnecting from ' + cardconnection.getReader()
  
          elif 'command'==ccevent.type:
              print '> ', toHexString( ccevent.args[0] )
  
          elif 'response'==ccevent.type:
              if []==ccevent.args[0]:
                  print '<  [] ', "%-2X %-2X" % tuple(ccevent.args[-2:])
              else:
                  print '< ', toHexString(ccevent.args[0]), "%-2X %-2X" % tuple(ccevent.args[-2:])
  
new_contents: """CardConnectionObserver interface.
  
  CardConnectionObserver is a base class for objects that are to be notified
  upon CardConnection events.
  
  __author__ = "http://www.gemalto.com"
  
  Copyright 2001-2010 gemalto
  Author: Jean-Daniel Aussel, mailto:jean-daniel.aussel@gemalto.com
  
  This file is part of pyscard.
  
  pyscard is free software; you can redistribute it and/or modify
  it under the terms of the GNU Lesser General Public License as published by
  the Free Software Foundation; either version 2.1 of the License, or
  (at your option) any later version.
  
  pyscard 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 Lesser General Public License for more details.
  
  You should have received a copy of the GNU Lesser General Public License
  along with pyscard; if not, write to the Free Software
  Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
  """
  
  from smartcard.util import toHexString
  from smartcard.Observer import Observer
  
  
  # ReaderObserver interface
  class CardConnectionObserver(Observer):
      """
      CardConnectionObserver is a base class for objects that are to be notified
      upon CardConnection events.
      """
  
      def update(self, cardconnection, cardconnectionevent):
          """Called upon CardConnection event.
  
          cardconnection:         the observed card connection object
          cardconnectionevent:    the CardConnectionEvent sent by the connection
          """
          pass
  
  
  class ConsoleCardConnectionObserver(CardConnectionObserver):
  
      def update(self, cardconnection, ccevent):
  
          if 'connect' == ccevent.type:
              print 'connecting to ' + cardconnection.getReader()
  
          elif 'disconnect' == ccevent.type:
              print 'disconnecting from ' + cardconnection.getReader()
  
          elif 'command' == ccevent.type:
              print '> ', toHexString(ccevent.args[0])
  
          elif 'response' == ccevent.type:
              if [] == ccevent.args[0]:
                  print '<  [] ', "%-2X %-2X" % tuple(ccevent.args[-2:])
              else:
                  print '< ', toHexString(ccevent.args[0]), "%-2X %-2X" % tuple(ccevent.args[-2:])
  
subject: make pep8 happy