author | František Kučera <franta-hg@frantovo.cz> |
Thu, 20 Dec 2018 00:26:00 +0100 | |
branch | v_0 |
changeset 34 | bd596c95395b |
parent 30 | 3f18cb7a6963 |
child 41 | 744b61559eb2 |
permissions | -rw-r--r-- |
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license: GNU GPLv3+
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/** |
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license of protocol, reader and writer: GNU LGPLv3+ or GNU GPLv2+
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* Relational pipes (library) |
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* Copyright © 2018 František Kučera (Frantovo.cz, GlobalCode.info) |
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* |
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* This program is free software: you can redistribute it and/or modify |
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* it under the terms of the: |
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* - GNU Lesser General Public License as published by the Free Software Foundation; |
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* either version 3 of the License, or (at your option) any later version; |
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* or (at your option) |
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* - GNU General Public License as published by the Free Software Foundation; |
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* either version 2 of the License, or (at your option) any later version. |
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* |
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* This program is distributed in the hope that it will be useful, |
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* but WITHOUT ANY WARRANTY; without even the implied warranty of |
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
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* GNU General Public License for more details. |
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* |
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* You should have received a copy of the GNU General Public License |
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* along with this program. If not, see <http://www.gnu.org/licenses/>. |
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*/ |
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#pragma once |
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#include <string> |
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#include <sstream> |
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#include <iostream> |
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#include <vector> |
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#include <locale> |
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#include <codecvt> |
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#include <relpipe/protocol/constants.h> |
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#include "../DataTypeWriter.h" |
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namespace relpipe { |
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namespace writer { |
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namespace types { |
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using namespace relpipe::protocol; |
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using namespace relpipe::writer; |
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/** |
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* The prototype does not recognize any encoding, |
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* it just works with c++ strings in encoding default to given platform. |
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* In the real implementation of relational pipes, there will be DataTypes for particular encodings. |
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*/ |
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class StringDataTypeWriter : public DataTypeWriter<string_t> { |
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private: |
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IntegerDataTypeWriter integerType; |
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std::wstring_convert<std::codecvt_utf8<wchar_t>> convertor; // TODO: support also other encodings. |
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public: |
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StringDataTypeWriter() : DataTypeWriter<string_t>(TypeId::STRING, DATA_TYPE_CODE_STRING) { |
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} |
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void writeValue(std::ostream &output, const string_t &value) override { |
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std::string s = convertor.to_bytes(value); |
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integerType.writeValue(output, s.length()); |
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output << s.c_str(); |
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} |
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wstring toValue(const string_t &stringValue) override { |
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return stringValue; |
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} |
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}; |
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} |
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} |
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} |