libmicrohttpd

HTTP/1.x server C library (MHD 1.x, stable)
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mhd_compat.h (2861B)

      1 /*
      2   This file is part of libmicrohttpd
      3   Copyright (C) 2014-2021 Karlson2k (Evgeny Grin)
      4 
      5   This library is free software; you can redistribute it and/or
      6   modify it under the terms of the GNU Lesser General Public
      7   License as published by the Free Software Foundation; either
      8   version 2.1 of the License, or (at your option) any later version.
      9 
     10   This library is distributed in the hope that it will be useful,
     11   but WITHOUT ANY WARRANTY; without even the implied warranty of
     12   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
     13   Lesser General Public License for more details.
     14 
     15   You should have received a copy of the GNU Lesser General Public
     16   License along with this library; if not, write to the Free Software
     17   Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
     18 
     19 */
     20 
     21 /**
     22  * @file microhttpd/mhd_compat.h
     23  * @brief  Header for platform missing functions.
     24  * @author Karlson2k (Evgeny Grin)
     25  *
     26  * Provides compatibility for platforms with some missing
     27  * functionality.
     28  * Any functions can be implemented as macro on some platforms
     29  * unless explicitly marked otherwise.
     30  * Any function argument can be skipped in macro, so avoid
     31  * variable modification in function parameters.
     32  */
     33 
     34 #ifndef MHD_COMPAT_H
     35 #define MHD_COMPAT_H 1
     36 
     37 #include "mhd_options.h"
     38 #ifdef HAVE_STDLIB_H
     39 #include <stdlib.h>
     40 #endif /* HAVE_STDLIB_H */
     41 #ifdef HAVE_STRING_H /* for strerror() */
     42 #include <string.h>
     43 #endif /* HAVE_STRING_H */
     44 
     45 /* MHD_strerror_ is strerror */
     46 #define MHD_strerror_(errnum) strerror ((errnum))
     47 
     48 /* Platform-independent snprintf name */
     49 #if defined(HAVE_SNPRINTF)
     50 #define MHD_snprintf_ snprintf
     51 #else  /* ! HAVE_SNPRINTF */
     52 #if defined(_WIN32) && ! defined(__CYGWIN__)
     53 /* Emulate snprintf function on W32 */
     54 int W32_snprintf (char *__restrict s, size_t n, const char *__restrict format,
     55                   ...);
     56 
     57 #define MHD_snprintf_ W32_snprintf
     58 #else  /* ! _WIN32 || __CYGWIN__ */
     59 #error \
     60   Your platform does not support snprintf() and MHD does not know how to emulate it on your platform.
     61 #endif /* ! _WIN32 || __CYGWIN__ */
     62 #endif /* ! HAVE_SNPRINTF */
     63 
     64 #ifdef HAVE_RANDOM
     65 /**
     66  * Generate pseudo random number at least 30-bit wide.
     67  * @return pseudo random number at least 30-bit wide.
     68  */
     69 #define MHD_random_() random ()
     70 #else  /* HAVE_RANDOM */
     71 #ifdef HAVE_RAND
     72 /**
     73  * Generate pseudo random number at least 30-bit wide.
     74  * @return pseudo random number at least 30-bit wide.
     75  */
     76 #define MHD_random_() ( (((long) rand ()) << 15) + (long) rand () )
     77 #endif /* HAVE_RAND */
     78 #endif /* HAVE_RANDOM */
     79 
     80 #ifdef HAVE_CALLOC
     81 /**
     82  * MHD_calloc_ is platform-independent calloc()
     83  */
     84 #define MHD_calloc_(n,s) calloc ((n),(s))
     85 #else  /* ! HAVE_CALLOC */
     86 /**
     87  * MHD_calloc_ is platform-independent calloc()
     88  */
     89 void *MHD_calloc_ (size_t nelem, size_t elsize);
     90 
     91 #endif /* ! HAVE_CALLOC */
     92 
     93 #endif /* MHD_COMPAT_H */