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#include <stdarg.h>
#include <stdio.h>
#include <string.h>
#include <devices/uart_16550.h>
static char buffer[3 * sizeof(int) + 2];
int
printf(const char *restrict format, ...)
{
int written = 0;
va_list params;
va_start(params, format);
int s = 0;
int l = 0;
for (int i = 0; format[i] != '\0'; ++i) {
if (format[i] == '%') {
written += uart_puts(COM1, &format[s], l);
s = i + 2;
++i;
switch (format[i]) {
case 's':
written += uart_puts(COM1, va_arg(params, const char *), -1);
break;
case 'c':
written++;
uart_write(COM1, va_arg(params, int));
break;
case 'd':
written += uart_puts(COM1, itoa(buffer, va_arg(params, int), 10), -1);
break;
case 'u':
written += uart_puts(COM1, utoa(buffer, va_arg(params, unsigned int), 10), -1);
break;
case 'x':
written += uart_puts(COM1, utoa(buffer, va_arg(params, unsigned int), 16), -1);
break;
}
l = 0;
}
else
++l;
}
if (l > 0) written += uart_puts(COM1, &format[s], l);
va_end(params);
return written;
}
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