Add compat_snprintf

Makefile.common

@@ -34,6 +34,7 @@ SOURCES_C += $(CORE_DIR)/libretro-common/file/retro_dirent.c \
 				 $(CORE_DIR)/libretro-common/file/file_path.c \
 				 $(CORE_DIR)/libretro-common/compat/compat_posix_string.c \
 				 $(CORE_DIR)/libretro-common/compat/compat_strl.c \
+				 $(CORE_DIR)/libretro-common/compat/compat_snprintf.c \
 				 $(CORE_DIR)/libretro-common/compat/compat_strcasestr.c
 endif
 

libretro-common/compat/compat_snprintf.c

+/* Copyright  (C) 2010-2017 The RetroArch team
+ *
+ * ---------------------------------------------------------------------------------------
+ * The following license statement only applies to this file (compat_snprintf.c).
+ * ---------------------------------------------------------------------------------------
+ *
+ * Permission is hereby granted, free of charge,
+ * to any person obtaining a copy of this software and associated documentation files (the "Software"),
+ * to deal in the Software without restriction, including without limitation the rights to
+ * use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software,
+ * and to permit persons to whom the Software is furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED,
+ * INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
+ * IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
+ * WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+ */
+
+/* THIS FILE HAS NOT BEEN VALIDATED ON PLATFORMS BESIDES MSVC */
+#ifdef _MSC_VER
+
+#include <retro_common.h>
+
+#include <stdio.h>
+#include <stdarg.h>
+
+/* http://stackoverflow.com/questions/2915672/snprintf-and-visual-studio-2010 */
+
+int c99_vsnprintf_retro__(char *outBuf, size_t size, const char *format, va_list ap)
+{
+   int count = -1;
+
+   if (size != 0)
+#if (_MSC_VER <= 1310)
+       count = _vsnprintf(outBuf, size, format, ap);
+#else
+       count = _vsnprintf_s(outBuf, size, _TRUNCATE, format, ap);
+#endif
+   if (count == -1)
+       count = _vscprintf(format, ap);
+
+   return count;
+}
+
+int c99_snprintf_retro__(char *outBuf, size_t size, const char *format, ...)
+{
+   int count;
+   va_list ap;
+
+   va_start(ap, format);
+   count = c99_vsnprintf_retro__(outBuf, size, format, ap);
+   va_end(ap);
+
+   return count;
+}
+#endif