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86 lines
2.6 KiB
C
86 lines
2.6 KiB
C
/* Copyright (C) 2010-2020 The RetroArch team
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*
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* ---------------------------------------------------------------------------------------
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* The following license statement only applies to this file (compat_snprintf.c).
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* ---------------------------------------------------------------------------------------
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*
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* Permission is hereby granted, free of charge,
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* to any person obtaining a copy of this software and associated documentation files (the "Software"),
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* to deal in the Software without restriction, including without limitation the rights to
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* use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software,
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* and to permit persons to whom the Software is furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED,
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* INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
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* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
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* WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
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*/
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/* THIS FILE HAS NOT BEEN VALIDATED ON PLATFORMS BESIDES MSVC */
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#ifdef _MSC_VER
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#include <stdio.h>
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#include <stdarg.h>
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#if _MSC_VER < 1800
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#define va_copy(dst, src) ((dst) = (src))
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#endif
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#if _MSC_VER < 1300
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#define _vscprintf c89_vscprintf_retro__
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static int c89_vscprintf_retro__(const char *format, va_list pargs)
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{
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int retval;
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va_list argcopy;
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va_copy(argcopy, pargs);
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retval = vsnprintf(NULL, 0, format, argcopy);
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va_end(argcopy);
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return retval;
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}
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#endif
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/* http://stackoverflow.com/questions/2915672/snprintf-and-visual-studio-2010 */
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int c99_vsnprintf_retro__(char *outBuf, size_t size, const char *format, va_list ap)
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{
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int count = -1;
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if (size != 0)
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{
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#if (_MSC_VER <= 1310)
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count = _vsnprintf(outBuf, size - 1, format, ap);
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#else
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count = _vsnprintf_s(outBuf, size, size - 1, format, ap);
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#endif
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}
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if (count == -1)
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count = _vscprintf(format, ap);
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if (count == size)
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{
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/* there was no room for a NULL, so truncate the last character */
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outBuf[size - 1] = '\0';
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}
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return count;
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}
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int c99_snprintf_retro__(char *outBuf, size_t size, const char *format, ...)
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{
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int count;
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va_list ap;
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va_start(ap, format);
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count = c99_vsnprintf_retro__(outBuf, size, format, ap);
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va_end(ap);
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return count;
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}
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#endif
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