#ifndef __vasprintf_compat_h
#define __vasprintf_compat_h

/**
 * @file
 * @brief Do not use, json-c internal, may be changed or removed at any time.
 */

#include "snprintf_compat.h"

#ifndef _WIN32
#include <stdarg.h>
#endif /* !defined(_WIN32) */
#include <stdint.h>
#include <stdlib.h>

#if !defined(HAVE_VASPRINTF)
/* CAW: compliant version of vasprintf */
static int vasprintf(char **buf, const char *fmt, va_list ap)
{
#ifndef _WIN32
    static char _T_emptybuffer = '\0';
    va_list ap2;
#endif /* !defined(_WIN32) */
    int chars;
    char *b;

    if (!buf)
    {
        return -1;
    }

#ifdef _WIN32
    chars = _vscprintf(fmt, ap);
#else  /* !defined(_WIN32) */
    /* CAW: RAWR! We have to hope to god here that vsnprintf doesn't overwrite
     * our buffer like on some 64bit sun systems... but hey, it's time to move on
     */
    va_copy(ap2, ap);
    chars = vsnprintf(&_T_emptybuffer, 0, fmt, ap2);
    va_end(ap2);
#endif /* defined(_WIN32) */
    if (chars < 0 || (size_t)chars + 1 > SIZE_MAX / sizeof(char))
    {
        return -1;
    }

    b = (char *)malloc(sizeof(char) * ((size_t)chars + 1));
    if (!b)
    {
        return -1;
    }

    if ((chars = vsprintf(b, fmt, ap)) < 0)
    {
        free(b);
    }
    else
    {
        *buf = b;
    }

    return chars;
}
#endif /* !HAVE_VASPRINTF */

#endif /* __vasprintf_compat_h */
