Function printf

lab7/src/2/src/kernel/stdio.cpp:165–235

}

int printf(const char *const fmt, ...)
{
    const int BUF_LEN = 32;

    char buffer[BUF_LEN + 1];
    char number[33];

    int idx, counter;
    va_list ap;

    va_start(ap, fmt);
    idx = 0;
    counter = 0;

    for (int i = 0; fmt[i]; ++i)
    {
        if (fmt[i] != '%')
        {
            counter += printf_add_to_buffer(buffer, fmt[i], idx, BUF_LEN);
        }
        else
        {
            i++;
            if (fmt[i] == '\0')
            {
                break;
            }

            switch (fmt[i])
            {
            case '%':
                counter += printf_add_to_buffer(buffer, fmt[i], idx, BUF_LEN);
                break;

            case 'c':
                counter += printf_add_to_buffer(buffer, va_arg(ap, char), idx, BUF_LEN);
                break;

            case 's':
                buffer[idx] = '\0';
                idx = 0;
                counter += stdio.print(buffer);
                counter += stdio.print(va_arg(ap, const char *));
                break;

            case 'd':
            case 'x':
                int temp = va_arg(ap, int);

                if (temp < 0 && fmt[i] == 'd')
                {
                    counter += printf_add_to_buffer(buffer, '-', idx, BUF_LEN);
                    temp = -temp;
                }

                itos(number, temp, (fmt[i] == 'd' ? 10 : 16));

                for (int j = 0; number[j]; ++j)