sdrangel/sdrbase/util/simpleserializer.h

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5.5 KiB
C++

///////////////////////////////////////////////////////////////////////////////////////
// Copyright (C) 2012 maintech GmbH, Otto-Hahn-Str. 15, 97204 Hoechberg, Germany //
// written by Christian Daniel //
// Copyright (C) 2015-2016, 2018-2019 Edouard Griffiths, F4EXB <f4exb06@gmail.com> //
// Copyright (C) 2022 Jon Beniston, M7RCE <jon@beniston.com> //
// //
// This program is free software; you can redistribute it and/or modify //
// it under the terms of the GNU General Public License as published by //
// the Free Software Foundation as version 3 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 V3 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/>. //
///////////////////////////////////////////////////////////////////////////////////////
#ifndef INCLUDE_SIMPLESERIALIZER_H
#define INCLUDE_SIMPLESERIALIZER_H
#include <QString>
#include <QMap>
#include <QDataStream>
#include <QIODevice>
#include "dsp/dsptypes.h"
#include "export.h"
class SDRBASE_API SimpleSerializer {
public:
SimpleSerializer(quint32 version);
void writeS32(quint32 id, qint32 value);
void writeU32(quint32 id, quint32 value);
void writeS64(quint32 id, qint64 value);
void writeU64(quint32 id, quint64 value);
void writeFloat(quint32 id, float value);
void writeDouble(quint32 id, double value);
void writeReal(quint32 id, Real value)
{
if(sizeof(Real) == 4)
writeFloat(id, value);
else writeDouble(id, value);
}
void writeBool(quint32 id, bool value);
void writeString(quint32 id, const QString& value);
void writeBlob(quint32 id, const QByteArray& value);
template<typename T>
void writeList(quint32 id, const QList<T>& value)
{
QByteArray data;
QDataStream *stream = new QDataStream(&data, QIODevice::WriteOnly);
(*stream) << value;
delete stream;
writeBlob(id, data);
}
template<typename TK, typename TV>
void writeHash(quint32 id, const QHash<TK,TV>& value)
{
QByteArray data;
QDataStream *stream = new QDataStream(&data, QIODevice::WriteOnly);
(*stream) << value;
delete stream;
writeBlob(id, data);
}
const QByteArray& final();
protected:
// Lists and hashes are written as TBlob
enum Type {
TSigned32 = 0,
TUnsigned32 = 1,
TSigned64 = 2,
TUnsigned64 = 3,
TFloat = 4,
TDouble = 5,
TBool = 6,
TString = 7,
TBlob = 8,
TVersion = 9
};
QByteArray m_data;
bool m_finalized;
bool writeTag(Type type, quint32 id, quint32 length);
};
class SDRBASE_API SimpleDeserializer {
public:
SimpleDeserializer(const QByteArray& data);
bool readS32(quint32 id, qint32* result, qint32 def = 0) const;
bool readU32(quint32 id, quint32* result, quint32 def = 0) const;
bool readS64(quint32 id, qint64* result, qint64 def = 0) const;
bool readU64(quint32 id, quint64* result, quint64 def = 0) const;
bool readFloat(quint32 id, float* result, float def = 0) const;
bool readDouble(quint32 id, double* result, double def = 0) const;
bool readReal(quint32 id, Real* result, Real def = 0) const;
bool readBool(quint32 id, bool* result, bool def = false) const;
bool readString(quint32 id, QString* result, const QString& def = QString()) const;
bool readBlob(quint32 id, QByteArray* result, const QByteArray& def = QByteArray()) const;
template<typename T>
bool readList(quint32 id, QList<T>* result, const QList<T>& def = {})
{
QByteArray data;
bool ok = readBlob(id, &data);
if (ok)
{
QDataStream *stream = new QDataStream(data);
(*stream) >> *result;
delete stream;
}
else
{
*result = def;
}
return ok;
}
template<typename TK, typename TV>
bool readHash(quint32 id, QHash<TK,TV>* result, const QHash<TK,TV>& def = {})
{
QByteArray data;
bool ok = readBlob(id, &data);
if (ok)
{
QDataStream *stream = new QDataStream(data);
(*stream) >> *result;
delete stream;
}
else
{
*result = def;
}
return ok;
}
bool isValid() const { return m_valid; }
quint32 getVersion() const { return m_version; }
void dump() const;
private:
enum Type {
TSigned32 = 0,
TUnsigned32 = 1,
TSigned64 = 2,
TUnsigned64 = 3,
TFloat = 4,
TDouble = 5,
TBool = 6,
TString = 7,
TBlob = 8,
TVersion = 9
};
struct Element {
Type type;
quint32 ofs;
quint32 length;
Element(Type _type, quint32 _ofs, quint32 _length) :
type(_type),
ofs(_ofs),
length(_length)
{ }
};
typedef QMap<quint32, Element> Elements;
QByteArray m_data;
bool m_valid;
Elements m_elements;
quint32 m_version;
bool parseAll();
bool readTag(uint* readOfs, uint readEnd, Type* type, quint32* id, quint32* length) const;
quint8 readByte(uint* readOfs) const
{
quint8 res = m_data[*readOfs];
(*readOfs)++;
return res;
}
};
#endif // INCLUDE_SIMPLESERIALIZER_H