37     int i = 1;  in main()  local
38     for (; !res && i < argc; i++) {  in main()
39         if (argv[i][0] != '-') break;  in main()
40         if (argv[i] == std::string("-o")) {  in main()
41             if (++i < argc) {  in main()
42                 format = argv[i];  in main()
47         } else if (argv[i] == std::string("-p")) {  in main()
48             if (++i < argc) {  in main()
49                 options.emplace_back(argv[i]);  in main()
54         } else if (argv[i] == std::string("-v")) {  in main()
55             if (++i < argc) {  in main()
56                 if (argv[i] == std::string("0")) pioasm.default_pio_version = 0;  in main()
57                 else if (argv[i] == std::string("1")) pioasm.default_pio_version = 1;  in main()
59                     std::cerr << "error: unsupported PIO version '" <<  argv[i] << "'" << std::endl;  in main()
66         } else if (argv[i] == std::string("-?") || argv[i] == std::string("--help")) {  in main()
70             std::cerr << "error: unknown option " << argv[i] << std::endl;  in main()
75         if (i != argc) {  in main()
76             input = argv[i++];  in main()
83         if (i != argc) {  in main()
84             output = argv[i++];  in main()
89     if (!res && i != argc) {  in main()
90         std::cerr << "unexpected command line argument " << argv[i] << std::endl;  in main()