optionset.cpp

/******************************************************************************
 *
 *  SPDX-FileCopyrightText: 2008 Szymon Tomasz Stefanek <pragma@kvirc.net>
 *
 *  SPDX-License-Identifier: GPL-2.0-or-later
 *
 *******************************************************************************/
 
#include "core/optionset.h"
 
#include <ctime> // for ::time( time_t * )
 
#include <QDataStream>
#include <QIODevice>
 
static const int gOptionSetInitialMarker = 0xcafe; // don't change
static const int gOptionSetFinalMarker = 0xbabe; // don't change
 
static const int gOptionSetWithReadOnLyModeVersion = 0x1002;
 
using namespace MessageList::Core;
 
OptionSet::OptionSet()
{
    generateUniqueId();
}
 
OptionSet::OptionSet(const OptionSet &set) = default;
 
OptionSet::OptionSet(const QString &name, const QString &description, bool readOnly)
    : mName(name)
    , mDescription(description)
    , mReadOnly(readOnly)
{
    generateUniqueId();
}
 
OptionSet::~OptionSet() = default;
 
void OptionSet::generateUniqueId()
{
    static int nextUniqueId = 0;
    nextUniqueId++;
    mId = QStringLiteral("%1-%2").arg((unsigned int)::time(nullptr)).arg(nextUniqueId);
}
 
QString OptionSet::saveToString() const
{
    QByteArray raw;
 
    {
        QDataStream s(&raw, QIODevice::WriteOnly);
 
        s << gOptionSetInitialMarker;
        s << gOptionSetWithReadOnLyModeVersion;
        s << mId;
        s << mName;
        s << mDescription;
        s << mReadOnly;
 
        save(s);
 
        s << gOptionSetFinalMarker;
    }
 
    return QString::fromLatin1(raw.toHex());
}
 
bool OptionSet::loadFromString(const QString &data)
{
    QByteArray raw = QByteArray::fromHex(data.toLatin1());
 
    QDataStream s(&raw, QIODevice::ReadOnly);
 
    int marker;
 
    s >> marker;
 
    if (marker != gOptionSetInitialMarker) {
        return false; // invalid configuration
    }
 
    int currentVersion;
 
    s >> currentVersion;
 
    if (currentVersion > gOptionSetWithReadOnLyModeVersion) {
        return false; // invalid configuration
    }
 
    s >> mId;
 
    if (mId.isEmpty()) {
        return false; // invalid configuration
    }
 
    s >> mName;
 
    if (mName.isEmpty()) {
        return false; // invalid configuration
    }
 
    s >> mDescription;
 
    bool readOnly = false;
    if (currentVersion == gOptionSetWithReadOnLyModeVersion) {
        s >> readOnly;
    }
    mReadOnly = readOnly;
 
    if (!load(s)) {
        return false; // invalid configuration
    }
 
    s >> marker;
 
    if (marker != gOptionSetFinalMarker) {
        return false; // invalid configuration
    }
 
    return true;
}