add a CLI command for converting saved games <-> scenarios

src/core/Path.cpp

@@ -79,6 +79,28 @@ namespace Path
         return buffer;
     }
 
+    const utf8 * GetExtension(const utf8 * path)
+    {
+        const utf8 * lastDot = nullptr;
+        const utf8 * ch = path;
+        for (; *ch != '\0'; ch++)
+        {
+            if (*ch == '.')
+            {
+                lastDot = ch;
+            }
+        }
+
+        if (lastDot == nullptr)
+        {
+            // Return the null terminator, i.e. a blank extension
+            return ch;
+        }
+
+        // Return the extension including the dot
+        return lastDot;
+    }
+
     utf8 * GetAbsolute(utf8 *buffer, size_t bufferSize, const utf8 * relativePath)
     {
 #if __WINDOWS__