| 1 | /* Copyright (C) 2010-2020 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 | |
| 36 | static int c89_vscprintf_retro__(const char *fmt, va_list pargs) |
| 37 | { |
| 38 | int retval; |
| 39 | va_list argcopy; |
| 40 | va_copy(argcopy, pargs); |
| 41 | retval = vsnprintf(NULL, 0, fmt, argcopy); |
| 42 | va_end(argcopy); |
| 43 | return retval; |
| 44 | } |
| 45 | #endif |
| 46 | |
| 47 | /* http://stackoverflow.com/questions/2915672/snprintf-and-visual-studio-2010 */ |
| 48 | |
| 49 | int c99_vsnprintf_retro__(char *s, size_t len, const char *fmt, va_list ap) |
| 50 | { |
| 51 | int count = -1; |
| 52 | |
| 53 | if (len != 0) |
| 54 | { |
| 55 | #if (_MSC_VER <= 1310) |
| 56 | count = _vsnprintf(s, len - 1, fmt, ap); |
| 57 | #else |
| 58 | count = _vsnprintf_s(s, len, len - 1, fmt, ap); |
| 59 | #endif |
| 60 | } |
| 61 | |
| 62 | if (count == -1) |
| 63 | count = _vscprintf(fmt, ap); |
| 64 | |
| 65 | /* there was no room for a NULL, so truncate the last character */ |
| 66 | if (count == len && len) |
| 67 | s[len - 1] = '\0'; |
| 68 | |
| 69 | return count; |
| 70 | } |
| 71 | |
| 72 | int c99_snprintf_retro__(char *s, size_t len, const char *fmt, ...) |
| 73 | { |
| 74 | int count; |
| 75 | va_list ap; |
| 76 | |
| 77 | va_start(ap, fmt); |
| 78 | count = c99_vsnprintf_retro__(s, len, fmt, ap); |
| 79 | va_end(ap); |
| 80 | |
| 81 | return count; |
| 82 | } |
| 83 | #endif |