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/*
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"
#ifdef HAVE_STDLIB_H
#include <stdlib.h>
#endif /* HAVE_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 */
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