Initial commit

ZUtil/ZJSONReader.cpp

@@ -0,0 +1,81 @@
+#include <ZUtil/ZJSONReader.hpp>
+
+#include <ZSTL/ZString.hpp>
+#include <ZSTL/ZBasicStringAlgo.hpp>
+#include <jansson.h>
+
+/* iterate over the values, adding to the KVTree as needed */
+static void recurse_and_populate ( json_t* _object, void* _itr, ZKVTree& _storage, ZString _currPath )
+{
+	/* for each key-value pair in the object...*/
+	while (_itr != NULL)
+	{
+		json_t* val = json_object_iter_value(_itr);
+
+		if ( json_is_array ( val ) )
+		{			
+
+			/*
+			TODO:
+			What happens if we have an array of arrays? An array of objects?
+			*/
+			size_t arraySize = json_array_size(val);			
+			for (size_t i = 0; i < arraySize; i++)
+			{
+				ZBasicStringAlgo::BuildPrintf(_currPath,"%s.%s[%d]", _currPath.Data(), json_object_iter_key(_itr), i );
+				json_t* data = json_array_get(val, i);
+				_storage.Put( _currPath, json_string_value(data) );
+			}						
+		}
+		else if ( json_is_object( val ) == false)
+		{
+			/* store the pair if it just a value...*/
+			ZBasicStringAlgo::BuildPrintf(_currPath,"%s.%s", _currPath.Data(), json_object_iter_key(_itr) );
+			json_t* data= json_object_iter_value( _itr );
+			_storage.Put( _currPath, json_string_value(data) );
+		}
+		else
+		{
+			/*...or parse it if it isn't */
+			_currPath = ZString( json_object_iter_key(_itr)) + ".";
+			recurse_and_populate( _object, _itr, _storage, _currPath );
+		}
+
+		_itr = json_object_iter_next( _object, _itr );
+	}
+}
+
+ZJSONReader::ZJSONReader(const ZString& _jsonData)
+: ErrorMessage(), JSONData(_jsonData), Registry(new (std::nothrow) ZKVTree())
+{
+	json_t* rootNode;
+
+	if (Registry == NULL)
+	{
+		ErrorMessage = "ZJSONReader: unable to create registry!";
+		return;
+	}
+
+	/* have Jansson parse the string out and make an object */
+	json_error_t error;
+	rootNode = json_loads( _jsonData.Data(), 0, &error);
+	if (rootNode == NULL)
+	{
+		ZBasicStringAlgo::BuildPrintf(ErrorMessage, "ZJSONReader: %s on line %d", error.text, error.line);
+		return;
+	}
+
+	/* now, we parse it out */
+	void* itr = json_object_iter(rootNode);
+	recurse_and_populate( rootNode, itr, *Registry, "");
+}
+
+const ZString& ZJSONReader::GetErrorString()
+{
+	return this->ErrorMessage;
+}
+
+ZPtr<ZKVTree> ZJSONReader::GetKVTree()
+{
+	return this->Registry;
+}