#pragma once

#include <string>

#include <sstream>

#include <iostream>

#include <vector>

#include <locale>

#include <codecvt>

#include "format.h"

namespace relpipe {

namespace 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>(DATA_TYPE_ID_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;

	}

};

}

}