#include <stdio.h>
#include <stdlib.h>
#include <limits.h>
#ifndef INSANE_ASPRINTF_H
#define INSANE_ASPRINTF_H

#ifndef __cplusplus
#include <stdarg.h>
#else
#include <cstdarg>
extern "C"
{
#endif

#define insane_free(ptr) { free(ptr); ptr = 0; }

	int vasprintf(char **strp, const char *fmt, va_list ap);
	int asprintf(char **strp, const char *fmt, ...);

#ifdef __cplusplus
}
#endif

#endif

int vasprintf(char **strp, const char *fmt, va_list ap)
{
	int r = -1, size = _vscprintf(fmt, ap);

	if ((size >= 0) && (size < INT_MAX))
	{
		*strp = (char *)malloc(size + 1); //+1 for null
		if (*strp)
		{
			r = vsnprintf(*strp, size + 1, fmt, ap);  //+1 for null
			if ((r < 0) || (r > size))
			{
				insane_free(*strp);
				r = -1;
			}
		}
	}
	else { *strp = 0; }

	return(r);
}