Everyone's worst code!

[mad1231999]

The worst code I have in my current project:

Code:

void kprintf(char *format, ...)
{
    char *p;
    int i;
    uint64_t i64;
    unsigned u;
    char *s;
    va_list argp;

    va_start(argp, format);

    p = format;
    for(p = format; *p != '\0'; p++)
    {
        if(*p != '%')
        {
            putch(*p);
            continue;
        }
        p++;

        switch(*p)
        {
            case 'c':
                i = va_arg(argp, int);
                putch(i);
                break;
            case 'd': case 'i':
                i = va_arg(argp, int);

                if(i < 0)
                {
                    i = -i;
                    putch('-');
                }

                puts(convert(i, 10));
                break;
            case 'l':
                i64 = va_arg(argp, uint64_t);
                puts(convert_u(i64, 10));
                break;
            case 'o':
                i = va_arg(argp, int);
                puts(convert(i, 8));
                break;
            case 's':
                s = va_arg(argp, char*);
                puts(s);
                break;
            case 'u':
                u = va_arg(argp, unsigned int);
                puts(convert_u((uint64_t) u, 10));
                break;
            case 'x':
                i64 = va_arg(argp, uint64_t);
                puts(convert_u(i64, 16));
                break;
            case 'b':
                u = va_arg(argp, unsigned int);
                puts(convert(u, 2));
                break;
            case '%':
                putch('%');
                break;
        }
    }

    va_end(argp);
}