old_contents: #!/usr/local/bin/python2.7
  
  """
      Copyright (c) 2016 Ad Schellevis
      All rights reserved.
  
      Redistribution and use in source and binary forms, with or without
      modification, are permitted provided that the following conditions are met:
  
      1. Redistributions of source code must retain the above copyright notice,
       this list of conditions and the following disclaimer.
  
      2. Redistributions in binary form must reproduce the above copyright
       notice, this list of conditions and the following disclaimer in the
       documentation and/or other materials provided with the distribution.
  
      THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES,
      INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY
      AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
      AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY,
      OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
      SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
      INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
      CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
      ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
      POSSIBILITY OF SUCH DAMAGE.
  
      --------------------------------------------------------------------------------------
      list known mac prefixes
  """
  
  import os.path
  import sys
  import ujson
  import netaddr.eui.ieee
  
  if __name__ == '__main__':
      result=dict()
      if os.path.isfile(netaddr.eui.ieee.OUI_REGISTRY):
          for line in open(netaddr.eui.ieee.OUI_REGISTRY).read().split('\n'):
              if line.find('(base 16)') > -1:
                  parts=line.split('(base 16)')
                  if len(parts) >= 2:
                      result[parts[0].strip()] = parts[1].strip()
  
      if len(sys.argv) > 1 and sys.argv[1] == 'json':
          # output json
          print(ujson.dumps(result))
      else:
          # output plain text (console)
          print ('%-6s %s' % ('prefix', 'manufacturer'))
          for mac_prefix in result:
              print ('%s %s' % (mac_prefix, result[mac_prefix]))
  
new_contents: #!/usr/local/bin/python2.7
  
  """
      Copyright (c) 2016 Ad Schellevis
      All rights reserved.
  
      Redistribution and use in source and binary forms, with or without
      modification, are permitted provided that the following conditions are met:
  
      1. Redistributions of source code must retain the above copyright notice,
       this list of conditions and the following disclaimer.
  
      2. Redistributions in binary form must reproduce the above copyright
       notice, this list of conditions and the following disclaimer in the
       documentation and/or other materials provided with the distribution.
  
      THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES,
      INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY
      AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
      AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY,
      OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
      SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
      INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
      CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
      ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
      POSSIBILITY OF SUCH DAMAGE.
  
      --------------------------------------------------------------------------------------
      list known mac prefixes
  """
  
  import os.path
  import sys
  import ujson
  import netaddr.eui.ieee
  
  if __name__ == '__main__':
      result=dict()
      if os.path.isfile(netaddr.eui.ieee.OUI_REGISTRY_PATH):
          for line in open(netaddr.eui.ieee.OUI_REGISTRY_PATH).read().split('\n'):
              if line.find('(base 16)') > -1:
                  parts=line.split('(base 16)')
                  if len(parts) >= 2:
                      result[parts[0].strip()] = parts[1].strip()
  
      if len(sys.argv) > 1 and sys.argv[1] == 'json':
          # output json
          print(ujson.dumps(result))
      else:
          # output plain text (console)
          print ('%-6s %s' % ('prefix', 'manufacturer'))
          for mac_prefix in result:
              print ('%s %s' % (mac_prefix, result[mac_prefix]))
  
subject: fix py-netaddr mac listing for new version