#include <unistd.h>
#include <stdarg.h>
#include <stdlib.h>
#include <stdio.h>
#include <string.h>

static int write_stdout(const char *token, int length)
{
	int rc;
	int bytes_written = 0;

	do {
		rc = write(1, token + bytes_written, length - bytes_written);
		if (rc < 0)
			return rc;

		bytes_written += rc;
	} while (bytes_written < length);

	return bytes_written;
}

char* convert(unsigned int num, int base)
{
	static char Representation[] = "0123456789ABCDEF";
	static char buffer[50];
	char *ptr;

	ptr = &buffer[49];
	*ptr = '\0';

	do
	{
		*--ptr = Representation[num % base];
		num/=base;
	} while (num != 0);
	
	return ptr;
}

void iocla_printf(const char *format, ...)
{
	va_list args;
	va_start(args, format);

	unsigned int i;
	char* specificator;
	char* s;

	for (specificator = format; *specificator != '\0'; specificator++)
	{
		while (*specificator != '%')
		{
			putchar(*specificator);
		}

		specificator++;

		switch (*specificator)
		{
			case 'd': 
					i = va_arg(args,int);
					if (i<0)
					{
						i = -i;
						putchar('-');
					}
					puts(convert(i,10));
					break;
			break;
		
			case 'u':
					i = va_arg(args,int);
					puts(convert(i,10));
					break;
			break;

			case 'x':
					i = va_arg(args, unsigned int);
					puts(convert(i,16));
					break;
			break;

			case 'c':
					i = va_arg(args, int);
					putchar(i);
					break;
			break;

			case 's':
					s = va_arg(args, char *);
					puts(s);
					break;
			break;

			default:
			break;
		}				
	}
	
	//return 0;
}

int main()
{
	//printf("%d\n", iocla_printf("Test blaa balaba %d", 5, 7 ,8));
	iocla_printf("test, nr int: %d, unsigned: %u, hexa: %x, char: %c, string: %s", 15, 2, 4, 'b', "mancare");
	printf("\n");
	return 0;
}