Add Lua function to query property identifiers

src/scene/scene.cpp

@@ -605,6 +605,14 @@ scripting::LuaLibrary Scene::luaLibrary() {
                 "Returns the value the property, identified by "
                 "the provided URI."
             },
+            {
+                "getProperty",
+                &luascriptfunctions::property_getProperty,
+                {},
+                "string",
+                "Returns a list of property identifiers that match the passed regular "
+                "expression"
+            },
             {
                 "loadScene",
                 &luascriptfunctions::loadScene,

src/scene/scene_lua.inl

@@ -401,6 +401,51 @@ int property_getValue(lua_State* L) {
     return 1;
 }
 
+/**
+ * \ingroup LuaScripts
+ * getProperty
+ * Returns a list of property identifiers that match the passed regular expression
+ */
+int property_getProperty(lua_State* L) {
+    ghoul::lua::checkArgumentsAndThrow(L, 1, "lua::property_getProperty");
+
+    std::string regex = ghoul::lua::value<std::string>(L, 1);
+    lua_pop(L, 1);
+
+
+    // Replace all wildcards * with the correct regex (.*)
+    size_t startPos = regex.find("*");
+    while (startPos != std::string::npos) {
+        regex.replace(startPos, 1, "(.*)");
+        startPos += 4; // (.*)
+        startPos = regex.find("*", startPos);
+    }
+
+
+
+    std::regex r(regex);
+    std::vector<properties::Property*> props = allProperties();
+    std::vector<std::string> res;
+    for (properties::Property* prop : props) {
+        // Check the regular expression for all properties
+        const std::string& id = prop->fullyQualifiedIdentifier();
+
+        if (std::regex_match(id, r)) {
+            res.push_back(id);
+        }
+    }
+
+    lua_newtable(L);
+    int number = 1;
+    for (const std::string& s : res) {
+        lua_pushstring(L, s.c_str());
+        lua_rawseti(L, -2, number);
+        ++number;
+    }
+
+    return 1;
+}
+
 /**
  * \ingroup LuaScripts
  * getPropertyValue(string):