uspace/lib/pcut/src/helper.c

   1 /*
   2  * Copyright (c) 2018 Vojtech Horky
   3  * All rights reserved.
   4  *
   5  * Redistribution and use in source and binary forms, with or without
   6  * modification, are permitted provided that the following conditions
   7  * are met:
   8  *
   9  * - Redistributions of source code must retain the above copyright
  10  *   notice, this list of conditions and the following disclaimer.
  11  * - Redistributions in binary form must reproduce the above copyright
  12  *   notice, this list of conditions and the following disclaimer in the
  13  *   documentation and/or other materials provided with the distribution.
  14  * - The name of the author may not be used to endorse or promote products
  15  *   derived from this software without specific prior written permission.
  16  *
  17  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
  18  * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
  19  * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
  20  * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
  21  * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
  22  * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
  23  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
  24  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  25  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
  26  * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  27  */
  28
  29 /** @file
  30  *
  31  * Helper functions.
  32  */
  33
  34 #include "internal.h"
  35
  36 #pragma warning(push, 0)
  37 #include <stdarg.h>
  38 #include <stdio.h>
  39 #pragma warning(pop)
  40
  41 /*
  42  * It seems that not all Unixes are the same and snprintf
  43  * may not be always exported?
  44  */
  45 #ifdef __unix
  46 extern int snprintf(char *, size_t, const char *, ...);
  47 #endif
  48
  49
  50 int pcut_snprintf(char *dest, size_t size, const char *format, ...) {
  51         va_list args;
  52         int ret;
  53
  54         va_start(args, format);
  55
  56         /*
  57          * Use sprintf_s in Windows but only with Microsoft compiler.
  58          * Namely, let MinGW use snprintf.
  59          */
  60 #if (defined(__WIN64) || defined(__WIN32) || defined(_WIN32)) && defined(_MSC_VER)
  61         ret = _vsnprintf_s(dest, size, _TRUNCATE, format, args);
  62 #else
  63         ret = vsnprintf(dest, size, format, args);
  64 #endif
  65
  66         va_end(args);
  67
  68         return ret;
  69 }