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alexey-lysiuk · Jan 5, 2024 · fc48f80 · fc48f80
1 parent b5a279c
commit fc48f80
Showing 1 changed file with 11 additions and 3 deletions.
diff --git a/Quake/imgui_lua_bindings/imgui_lua_bindings.cpp b/Quake/imgui_lua_bindings/imgui_lua_bindings.cpp
@@ -79,12 +79,20 @@ static ImVector<char> ioTextBuffer;
 #define IOTEXT_ARG(name) \
     size_t i_##name##_size; \
     const char * i_##name##_const = luaL_checklstring(L, arg++, &(i_##name##_size)); \
-    const size_t bufferSize = (size_t)luaL_checknumber(L, arg); \
+    const lua_Integer bufferSizeInt = luaL_checkinteger(L, arg); \
+    static constexpr lua_Integer BUFFER_SIZE_MIN = 1024; \
+    static constexpr lua_Integer BUFFER_SIZE_MAX = 1024 * 1024; \
+    const size_t bufferSize = bufferSizeInt < BUFFER_SIZE_MIN ? BUFFER_SIZE_MIN : (bufferSizeInt > BUFFER_SIZE_MAX ? BUFFER_SIZE_MAX : bufferSizeInt); \
     ioTextBuffer.resize(bufferSize); \
-    if (bufferSize <= i_##name##_size) \
+    if (bufferSize <= i_##name##_size) { \
         i_##name##_size = bufferSize - 1; \
+        ioTextBuffer[i_##name##_size] = '\0'; \
+    } \
     char* name = &ioTextBuffer[0]; \
-    strncpy(name, i_##name##_const, i_##name##_size);
+    if (i_##name##_size > 0) \
+        strncpy(name, i_##name##_const, i_##name##_size); \
+    else \
+        name[0] = '\0';
 
 #define END_IOTEXT(name) \
     const char* o_##name = name;\