/*

  This file is part of libmicrohttpd

  Copyright (C) 2014-2016 Karlson2k (Evgeny Grin)

  This library is free software; you can redistribute it and/or

  modify it under the terms of the GNU Lesser General Public

  License as published by the Free Software Foundation; either

  version 2.1 of the License, or (at your option) any later version.

  This library is distributed in the hope that it will be useful,

  but WITHOUT ANY WARRANTY; without even the implied warranty of

  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU

  Lesser General Public License for more details.

  You should have received a copy of the GNU Lesser General Public

  License along with this library; if not, write to the Free Software

  Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA

*/

/**

 * @file microhttpd/mhd_compat.h

 * @brief  Header for platform missing functions.

 * @author Karlson2k (Evgeny Grin)

 *

 * Provides compatibility for platforms with some missing

 * functionality.

 * Any functions can be implemented as macro on some platforms

 * unless explicitly marked otherwise.

 * Any function argument can be skipped in macro, so avoid

 * variable modification in function parameters.

 */

#ifndef MHD_COMPAT_H

#define MHD_COMPAT_H 1

#include "mhd_options.h"

#include <stdlib.h>

#ifdef HAVE_STRING_H /* for strerror() */

#include <string.h>

#endif /* HAVE_STRING_H */

 /* MHD_strerror_ is strerror */

#define MHD_strerror_(errnum) strerror((errnum))

/* Platform-independent snprintf name */

#if defined(HAVE_SNPRINTF)

#define MHD_snprintf_ snprintf

#else  /* ! HAVE_SNPRINTF */

#if defined(_WIN32) && ! defined(__CYGWIN__)

/* Emulate snprintf function on W32 */

int W32_snprintf(char *__restrict s, size_t n, const char *__restrict format, ...);

#define MHD_snprintf_ W32_snprintf

#else  /* ! _WIN32 || __CYGWIN__ */

#error Your platform does not support snprintf() and MHD does not know how to emulate it on your platform.

#endif /* ! _WIN32 || __CYGWIN__ */

#endif /* ! HAVE_SNPRINTF */

#ifdef HAVE_RANDOM

/**

 * Generate pseudo random number at least 30-bit wide.

 * @return pseudo random number at least 30-bit wide.

 */

#define MHD_random_() random()

#else  /* HAVE_RANDOM */

#ifdef HAVE_RAND

/**

 * Generate pseudo random number at least 30-bit wide.

 * @return pseudo random number at least 30-bit wide.

 */

#define MHD_random_() ( (((long)rand()) << 15) + (long)rand() )

#endif /* HAVE_RAND */

#endif /* HAVE_RANDOM */

#ifdef HAVE_CALLOC

/**

 * MHD_calloc_ is platform-independent calloc()

 */

#define MHD_calloc_(n,s) calloc((n),(s))

#else  /* ! HAVE_CALLOC */

/**

 * MHD_calloc_ is platform-independent calloc()

 */

void *MHD_calloc_(size_t nelem, size_t elsize);

#endif /* ! HAVE_CALLOC */

#endif /* MHD_COMPAT_H */