Add Json.cpp

Author: ferdnyc

src/Json.cpp

@@ -0,0 +1,50 @@
+/**
+ * @file
+ * @brief Helper functions for Json parsing
+ * @author FeRD (Frank Dana) <[email protected]>
+ *
+ * @ref License
+ */
+
+/* LICENSE
+ *
+ * Copyright (c) 2008-2019 OpenShot Studios, LLC
+ * <http://www.openshotstudios.com/>. This file is part of
+ * OpenShot Library (libopenshot), an open-source project dedicated to
+ * delivering high quality video editing and animation solutions to the
+ * world. For more information visit <http://www.openshot.org/>.
+ *
+ * OpenShot Library (libopenshot) is free software: you can redistribute it
+ * and/or modify it under the terms of the GNU Lesser General Public License
+ * as published by the Free Software Foundation, either version 3 of the
+ * License, or (at your option) any later version.
+ *
+ * OpenShot Library (libopenshot) is distributed in the hope that it will be
+ * useful, but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public License
+ * along with OpenShot Library. If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#include "../include/Json.h"
+
+const Json::Value openshot::stringToJson(const std::string value) {
+
+	// Parse JSON string into JSON objects
+	Json::Value root;
+	Json::CharReaderBuilder rbuilder;
+	Json::CharReader* reader(rbuilder.newCharReader());
+
+	std::string errors;
+	bool success = reader->parse( value.c_str(), value.c_str() + value.size(),
+	                              &root, &errors );
+	delete reader;
+
+	if (!success)
+		// Raise exception
+		throw openshot::InvalidJSON("JSON could not be parsed (or is invalid)");
+
+	return root;
+}