/**

 * Relational pipes (library)

 * Copyright © 2018 František Kučera (Frantovo.cz, GlobalCode.info)

 *

 * This program 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;

 *  - GNU General Public License as published by the Free Software Foundation;

 *

 * This program 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 General Public License for more details.

 *

 * You should have received a copy of the GNU General Public License

 * along with this program. If not, see <http://www.gnu.org/licenses/>.

 */

#pragma once

#include <string>

#include <sstream>

#include <iostream>

#include <vector>

#include <locale>

#include <codecvt>

#include <relpipe/protocol/constants.h>

#include "../DataTypeWriter.h"

namespace relpipe {

namespace writer {

namespace types {

using namespace relpipe::protocol;

using namespace relpipe::writer;

/**

 * The prototype does not recognize any encoding,

 * it just works with c++ strings in encoding default to given platform. 

 * In the real implementation of relational pipes, there will be DataTypes for particular encodings.

 */

class StringDataTypeWriter : public DataTypeWriter<string_t> {

private:

	IntegerDataTypeWriter integerType;

	std::wstring_convert<std::codecvt_utf8<wchar_t>> convertor; // TODO: support also other encodings.

public:

	StringDataTypeWriter() : DataTypeWriter<string_t>(TypeId::STRING, DATA_TYPE_CODE_STRING) {

	}

	void writeValue(std::ostream &output, const string_t &value) override {

		std::string s = convertor.to_bytes(value);

		integerType.writeValue(output, s.length());

		output << s.c_str();

	}

	wstring toValue(const string_t &stringValue) override {

		return stringValue;

	}

};

}

}

}