1 /* Copyright (C) 2010-2018 The RetroArch team
2 *
3 * ---------------------------------------------------------------------------------------
4 * The following license statement only applies to this file (compat_snprintf.c).
5 * ---------------------------------------------------------------------------------------
6 *
7 * Permission is hereby granted, free of charge,
8 * to any person obtaining a copy of this software and associated documentation files (the "Software"),
9 * to deal in the Software without restriction, including without limitation the rights to
10 * use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software,
11 * and to permit persons to whom the Software is furnished to do so, subject to the following conditions:
12 *
13 * The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software.
14 *
15 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED,
16 * INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
17 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
18 * IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
19 * WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
20 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
21 */
22
23 /* THIS FILE HAS NOT BEEN VALIDATED ON PLATFORMS BESIDES MSVC */
24 #ifdef _MSC_VER
25
26 #include <stdio.h>
27 #include <stdarg.h>
28
29 #if _MSC_VER < 1800
30 #define va_copy(dst, src) ((dst) = (src))
31 #endif
32
33 #if _MSC_VER < 1300
34 #define _vscprintf c89_vscprintf_retro__
35
c89_vscprintf_retro__(const char * format,va_list pargs)36 static int c89_vscprintf_retro__(const char *format, va_list pargs)
37 {
38 int retval;
39 va_list argcopy;
40 va_copy(argcopy, pargs);
41 retval = vsnprintf(NULL, 0, format, argcopy);
42 va_end(argcopy);
43 return retval;
44 }
45 #endif
46
47 /* http://stackoverflow.com/questions/2915672/snprintf-and-visual-studio-2010 */
48
c99_vsnprintf_retro__(char * outBuf,size_t size,const char * format,va_list ap)49 int c99_vsnprintf_retro__(char *outBuf, size_t size, const char *format, va_list ap)
50 {
51 int count = -1;
52
53 if (size != 0)
54 {
55 #if (_MSC_VER <= 1310)
56 count = _vsnprintf(outBuf, size - 1, format, ap);
57 #else
58 count = _vsnprintf_s(outBuf, size, size - 1, format, ap);
59 #endif
60 }
61
62 if (count == -1)
63 count = _vscprintf(format, ap);
64
65 if (count == size)
66 {
67 /* there was no room for a NULL, so truncate the last character */
68 outBuf[size - 1] = '\0';
69 }
70
71 return count;
72 }
73
c99_snprintf_retro__(char * outBuf,size_t size,const char * format,...)74 int c99_snprintf_retro__(char *outBuf, size_t size, const char *format, ...)
75 {
76 int count;
77 va_list ap;
78
79 va_start(ap, format);
80 count = c99_vsnprintf_retro__(outBuf, size, format, ap);
81 va_end(ap);
82
83 return count;
84 }
85 #endif
86