31 void usage(const char* message, ...) {  in usage()  function
477         usage("At most one occurrence of --encode --encodeNoHeader or --decode is allowed.\n");  in multipleEncodeDecodeCheck()
502                     usage("Only one -o flag allowed.");  in main()
505                     usage("Expected outfile after -o");  in main()
523                         usage("Only one --showDifference option allowed.\n");  in main()
527                         usage("Expected difffile after --showDifference");  in main()
531                     usage( NULL);  in main()
533                     usage("Unknown flag %s", pArg);  in main()
538                 usage("Unknown flag %s", pArg);  in main()
543                 usage(  in main()
556         usage("--showDifference is only valid when encoding.");  in main()
560         usage("Expected an input file.");  in main()
569             usage("Could not change extension of input file name: %s\n", pInput);  in main()