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Version 2.2.5p0

    1: /* vim: tabstop=4 shiftwidth=4 noexpandtab
    2:  * MiniUPnP project
    3:  * http://miniupnp.free.fr/ or https://miniupnp.tuxfamily.org/
    4:  * (c) 2020 Pali Rohár
    5:  * This software is subject to the conditions detailed
    6:  * in the LICENCE file provided within the distribution */
    7: 
    8: #ifndef WIN32_SNPRINTF_H
    9: #define WIN32_SNPRINTF_H
   10: 
   11: #ifdef _WIN32
   12: 
   13: #include <stdio.h>
   14: 
   15: /* snprintf is supported by:
   16:  *  - Visual Studio 2015 or new
   17:  *  - mingw32 with iso c ext
   18:  *  - mingw-w64 with ansi stdio
   19:  *  - mingw-w64 6.0.0 or new with ucrt
   20:  *  - mingw-w64 8.0.0 or new with iso c ext
   21:  */
   22: #if ( \
   23: 	(defined(_MSC_VER) && _MSC_VER < 1900) /* Visual Studio older than 2015 */ || \
   24: 	(defined(__MINGW32__) && !defined(__MINGW64_VERSION_MAJOR) && defined(__NO_ISOCEXT)) /* mingw32 without iso c ext */ || \
   25: 	(defined(__MINGW64_VERSION_MAJOR) && /* mingw-w64 not ... */ !( \
   26: 		(defined (__USE_MINGW_ANSI_STDIO) && __USE_MINGW_ANSI_STDIO != 0)) /* ... with ansi stdio */ || \
   27: 		(__MINGW64_VERSION_MAJOR >= 6 && defined(_UCRT)) /* ... at least 6.0.0 with ucrt */ || \
   28: 		(__MINGW64_VERSION_MAJOR >= 8 && !defined(__NO_ISOCEXT)) /* ... at least 8.0.0 with iso c ext */ || \
   29: 	0) || \
   30: 0)
   31: 
   32: /* _scprintf is supported by:
   33:  *  - Visual Studio 2002 or new
   34:  *  - msvcr70.dll or new
   35:  *  - msvcrt.dll on Windows XP or new
   36:  */
   37: #if ( \
   38: 	(defined(_MSC_VER) && _MSC_VER < 1300) /* Visual Studio older than 2002 */ || \
   39: 	(defined(__MSVCRT_VERSION__) && __MSVCRT_VERSION__ < 0x700) /* msvcrt older than 7.0 */ || \
   40: 0)
   41: #define CHECK_SCPRINTF 0
   42: #define IF_SCPRINTF(expr) 0
   43: #define ELSE_SCPRINTF(expr) expr
   44: #else
   45: #define CHECK_SCPRINTF 1
   46: #define IF_SCPRINTF(expr) expr
   47: #define ELSE_SCPRINTF(expr) 0
   48: #endif
   49: 
   50: /* Emulation of snprintf for win32 */
   51: #define snprintf(buf, size, fmt, ...) ( \
   52: 	(((size) != 0 && (buf) != NULL) ? ( /* _snprintf does not work with NULL buffer */ \
   53: 		_snprintf((buf), (size), (fmt), __VA_ARGS__), /* _snprintf returns -1 on overflow, so ignore its value */ \
   54: 		(((char *)buf)[(size_t)(size)-1] = 0), /* _snprintf does not fill nul byte on overflow */ \
   55: 	0) : 0), \
   56: 	(CHECK_SCPRINTF ? IF_SCPRINTF( \
   57: 		_scprintf((fmt), __VA_ARGS__) /* calculate return value for snprintf via _scprintf */ \
   58: 	) : ELSE_SCPRINTF( \
   59: 		((size) != 0 && (buf) != NULL) ? \
   60: 			strlen((buf)) /* return just length of buffer */ \
   61: 		: \
   62: 			1 /* no buffer, impossible to calculate, return just non-zero number */ \
   63: 		) \
   64: 	) \
   65: )
   66: 
   67: #endif
   68: 
   69: #endif /* _WIN32 */
   70: 
   71: #endif /* WIN32_SNPRINTF_H */