/**
* 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;
* either version 3 of the License, or (at your option) any later version;
* or (at your option)
* - GNU General Public License as published by the Free Software Foundation;
* either version 2 of the License, or (at your option) any later version.
*
* 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;
}
};
}
}
}