text: #!/usr/bin/env python3
  import fnmatch
  import os
  from termcolor import colored
  
  header_cirkit = """/* {tool}
   * Copyright (C) 2009-2015  University of Bremen
   * Copyright (C) 2015-2017  EPFL
   *
   * Permission is hereby granted, free of charge, to any person
   * obtaining a copy of this software and associated documentation
   * files (the "Software"), to deal in the Software without
   * restriction, including without limitation the rights to use,
   * copy, modify, merge, publish, distribute, sublicense, and/or sell
   * copies of the Software, and to permit persons to whom the
   * Software is furnished to do so, subject to the following
   * conditions:
   *
   * The above copyright notice and this permission notice shall be
   * included in all copies or substantial portions of the Software.
   *
   * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
   * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES
   * OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
   * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT
   * HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
   * WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
   * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
   * OTHER DEALINGS IN THE SOFTWARE.
   */
  """
  
  def get_source_files( *addon_names, directories = [ "src", "programs", "test" ], filt = "*.?pp" ):
      # base dirs
      base_dirs = ["."] + ["addons/cirkit-addon-%s" % a for a in addon_names]
      # refine
      base_dirs = [ os.path.join( base, top ) for base in base_dirs for top in directories ]
      # now walk through them
      return [os.path.join(root, filename) for base_dir in base_dirs for root, _, filenames in os.walk( base_dir ) for filename in fnmatch.filter( filenames, filt )]
  
  def matches( file_header, header ):
      for tool in ["CirKit: A circuit toolkit", "alice: A C++ EDA command line interface API"]:
          if header.replace( "{tool}", tool ) == file_header:
              return True
      return False
  
  count = 0
  total = 0
  header = header_cirkit
  lines = header.count( "\n" )
  
  for name in get_source_files( "formal", "reversible", "experimental" ):
      ll = open( name, "r" ).readlines()
      if ll[0].strip() == "/* [custom_license] */":
          total += 1
          continue
  
      while len( ll ) > lines and ll[lines - 1].strip() != '*/':
          ll.remove( ll[3] )
  
      file_header = ''.join( ll[0:lines] )
      if not matches( file_header, header ):
          count += 1
          print( "{0} File {1} has wrong header.".format( colored( '[e]', 'red', attrs = ['bold'] ), colored( name, 'green' ) ) )
      total += 1
  
  print( "{0} {1} from {2} files have a wrong header.".format( colored( '[i]', 'white', attrs = ['bold'] ), count, total ) )
  