ext/commonmarker/cmark/src/config.h.in in commonmarker-0.6.0 vs ext/commonmarker/cmark/src/config.h.in in commonmarker-0.7.0

@@ -1,5 +1,12 @@
+#ifndef CMARK_CONFIG_H
+#define CMARK_CONFIG_H
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
 #cmakedefine HAVE_STDBOOL_H
 
 #ifdef HAVE_STDBOOL_H
   #include <stdbool.h>
 #elif !defined(__cplusplus)
@@ -20,6 +27,50 @@
   #if defined(_MSC_VER) && !defined(__cplusplus)
     #define CMARK_INLINE __inline
   #else
     #define CMARK_INLINE inline
   #endif
+#endif
+
+/* snprintf and vsnprintf fallbacks for MSVC before 2015,
+   due to Valentin Milea http://stackoverflow.com/questions/2915672/
+*/
+
+#if defined(_MSC_VER) && _MSC_VER < 1900
+
+#include <stdio.h>
+#include <stdarg.h>
+
+#define snprintf c99_snprintf
+#define vsnprintf c99_vsnprintf
+
+CMARK_INLINE int c99_vsnprintf(char *outBuf, size_t size, const char *format, va_list ap)
+{
+    int count = -1;
+
+    if (size != 0)
+        count = _vsnprintf_s(outBuf, size, _TRUNCATE, format, ap);
+    if (count == -1)
+        count = _vscprintf(format, ap);
+
+    return count;
+}
+
+CMARK_INLINE int c99_snprintf(char *outBuf, size_t size, const char *format, ...)
+{
+    int count;
+    va_list ap;
+
+    va_start(ap, format);
+    count = c99_vsnprintf(outBuf, size, format, ap);
+    va_end(ap);
+
+    return count;
+}
+
+#endif
+
+#ifdef __cplusplus
+}
+#endif
+
 #endif