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godotengine
GitHub Repository: godotengine/godot
 Path: blob/master/thirdparty/miniupnpc/src/win32_snprintf.h
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/* vim: tabstop=4 shiftwidth=4 noexpandtab

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 * MiniUPnP project

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 * http://miniupnp.free.fr/ or https://miniupnp.tuxfamily.org/

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 * (c) 2020 Pali Rohár

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 * This software is subject to the conditions detailed

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 * in the LICENCE file provided within the distribution */

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#ifndef WIN32_SNPRINTF_H

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#define WIN32_SNPRINTF_H

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#ifdef _WIN32

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#include <stdio.h>

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/* snprintf is supported by:

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 *  - Visual Studio 2015 or new

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 *  - mingw32 with iso c ext

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 *  - mingw-w64 with ansi stdio

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 *  - mingw-w64 6.0.0 or new with ucrt

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 *  - mingw-w64 8.0.0 or new with iso c ext

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 */

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#if ( \

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	(defined(_MSC_VER) && _MSC_VER < 1900) /* Visual Studio older than 2015 */ || \

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	(defined(__MINGW32__) && !defined(__MINGW64_VERSION_MAJOR) && defined(__NO_ISOCEXT)) /* mingw32 without iso c ext */ || \

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	(defined(__MINGW64_VERSION_MAJOR) && /* mingw-w64 not ... */ !( \

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		(defined (__USE_MINGW_ANSI_STDIO) && __USE_MINGW_ANSI_STDIO != 0) /* ... with ansi stdio */ || \

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		(__MINGW64_VERSION_MAJOR >= 6 && defined(_UCRT)) /* ... at least 6.0.0 with ucrt */ || \

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		(__MINGW64_VERSION_MAJOR >= 8 && !defined(__NO_ISOCEXT))) /* ... at least 8.0.0 with iso c ext */ || \

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	0) || \

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0)

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/* _scprintf is supported by:

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 *  - Visual Studio 2002 or new

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 *  - msvcr70.dll or new

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 *  - msvcrt.dll on Windows XP or new

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 */

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#if ( \

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	(defined(_MSC_VER) && _MSC_VER < 1300) /* Visual Studio older than 2002 */ || \

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	(defined(__MSVCRT_VERSION__) && __MSVCRT_VERSION__ < 0x700) /* msvcrt older than 7.0 */ || \

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0)

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#define CHECK_SCPRINTF 0

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#define IF_SCPRINTF(expr) 0

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#define ELSE_SCPRINTF(expr) expr

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#else

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#define CHECK_SCPRINTF 1

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#define IF_SCPRINTF(expr) expr

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#define ELSE_SCPRINTF(expr) 0

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#endif

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/* Emulation of snprintf for win32 */

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#define snprintf(buf, size, fmt, ...) ( \

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	(((size) != 0 && (buf) != NULL) ? ( /* _snprintf does not work with NULL buffer */ \

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		_snprintf((buf), (size), (fmt), __VA_ARGS__), /* _snprintf returns -1 on overflow, so ignore its value */ \

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		(((char *)buf)[(size_t)(size)-1] = 0), /* _snprintf does not fill nul byte on overflow */ \

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	0) : 0), \

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	(CHECK_SCPRINTF ? IF_SCPRINTF( \

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		_scprintf((fmt), __VA_ARGS__) /* calculate return value for snprintf via _scprintf */ \

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	) : ELSE_SCPRINTF( \

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		((size) != 0 && (buf) != NULL) ? \

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			strlen((buf)) /* return just length of buffer */ \

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		: \

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			1 /* no buffer, impossible to calculate, return just non-zero number */ \

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		) \

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	) \

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)

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#endif

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#endif /* _WIN32 */

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#endif /* WIN32_SNPRINTF_H */

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