forked from blue/lmdbal
79 lines
No EOL
2.6 KiB
C++
79 lines
No EOL
2.6 KiB
C++
/*
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* LMDB Abstraction Layer.
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* Copyright (C) 2023 Yury Gubich <blue@macaw.me>
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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 GNU General Public License as published by
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* the Free Software Foundation, either version 3 of the License, or
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* (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 <QString>
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#include <QByteArray>
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namespace LMDBAL {
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template<>
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class Serializer<QString> {
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public:
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Serializer():value() {};
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Serializer(const QString& p_value):value(p_value.toUtf8()) {};
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~Serializer() {};
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QString deserialize(const MDB_val& data) {
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#if (QT_VERSION >= QT_VERSION_CHECK(6, 0, 0))
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if (data.mv_size > static_cast<size_t>(std::numeric_limits<qsizetype>::max()))
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throw std::runtime_error("Data size exceeds QByteArray capacity");
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value = QByteArray(static_cast<char *>(data.mv_data), static_cast<qsizetype>(data.mv_size));
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#else
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if (data.mv_size > static_cast<size_t>(std::numeric_limits<int>::max()))
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throw std::runtime_error("Data size exceeds QByteArray capacity");
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value = QByteArray(static_cast<char *>(data.mv_data), static_cast<int>(data.mv_size));
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#endif
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return QString::fromUtf8(value);
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};
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void deserialize(const MDB_val& data, QString& result) {
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#if (QT_VERSION >= QT_VERSION_CHECK(6, 0, 0))
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if (data.mv_size > static_cast<size_t>(std::numeric_limits<qsizetype>::max()))
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throw std::runtime_error("Data size exceeds QByteArray capacity");
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value = QByteArray(static_cast<char *>(data.mv_data), static_cast<qsizetype>(data.mv_size));
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#else
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if (data.mv_size > static_cast<size_t>(std::numeric_limits<int>::max()))
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throw std::runtime_error("Data size exceeds QByteArray capacity");
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value = QByteArray(static_cast<char *>(data.mv_data), static_cast<int>(data.mv_size));
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#endif
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result = QString::fromUtf8(value);
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}
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MDB_val setData(const QString& data) {
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value = data.toUtf8();
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return getData();
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};
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MDB_val getData() {
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MDB_val result;
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result.mv_data = value.data();
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result.mv_size = static_cast<size_t>(value.size());
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return result;
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};
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void clear() {}; //not possible;
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private:
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QByteArray value;
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};
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} |