main.c

#include <stdio.h>
#include <stdlib.h>
#include <getopt.h>

#include "lib/tester.h"

extern struct tester_operations myops;

static struct tester_flags flags = {
    .keep_going_on_mismatch = 0,
    .enable_cb_instruction_testing = 1,
    .print_tested_instruction = 0,
    .print_verbose_inputs = 0,
};

static void print_usage(char *progname)
{
    printf("Usage: %s [option]...\n\n", progname);
    printf("Game Boy Instruction Tester.\n\n");
    printf("Options:\n");
    printf(" -k, --keep-going       Skip to the next instruction on a mismatch "
            "(instead of aborting all tests).\n");
    printf(" -c, --no-enable-cb     Disable testing of CB prefixed "
            "instructions.\n");
    printf(" -p, --print-inst       Print instruction undergoing tests.\n");
    printf(" -v, --print-input      Print every inputstate that is tested.\n");
    printf(" -h, --help             Show this help.\n");
}

static int parse_args(int argc, char **argv)
{
    while (1) {
        static struct option long_options[] = {
            {"keep-going",   no_argument,        0,  'k'},
            {"no-enable-cb", no_argument,        0,  'c'},
            {"print-inst",   no_argument,        0,  'p'},
            {"print-input",  no_argument,        0,  'v'},
            {"help",         no_argument,        0,  'h'},
            {0, 0, 0, 0}
        };

        char c = getopt_long(argc, argv, "kcpvh", long_options, NULL);

        if (c == -1)
            break;

        switch (c) {
            case 'k':
                flags.keep_going_on_mismatch = 1;
                break;

            case 'c':
                flags.enable_cb_instruction_testing = 0;
                break;

            case 'p':
                flags.print_tested_instruction = 1;
                break;

            case 'v':
                flags.print_verbose_inputs = 1;
                break;

            case 'h':
                print_usage(argv[0]);
                exit(0);

            default:
                print_usage(argv[0]);
                return 1;
        }
    }

    if (optind != argc) {
        /* We should not have any leftover arguments. */
        print_usage(argv[0]);
        return 1;
    }

    return 0;
}

int main(int argc, char **argv)
{
    if (parse_args(argc, argv))
        return 1;

    return tester_run(&flags, &myops);
}