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#include <stdio.h>
#include <stdlib.h>
#include <stdarg.h>
#include "asprintf.h"

/* Implementation of asprintf() */

int
asprintf(char **restrict strp, const char *restrict fmt,... )
{
	va_list args;
	int size = 0;
	va_start(args,fmt);
	va_end(args);
	return size = vasprintf(strp,fmt,args);

}

int
vasprintf(char **restrict strp, const char *restrict fmt,
	va_list ap)
{
	va_list args;
	va_copy(args,ap);
	int size = vsnprintf(NULL,0,fmt,args);
	
	/* if negative number is returned return error */
	if (size < 0)
		return -1;
	*strp = (char*)malloc(size + 1);
	if(*strp == NULL)
		return -1;
	
	va_end(args);
	
	return size = vsprintf(*strp,fmt,ap);
}