bool writeConfFile(QIODevice &device, const QSettings::SettingsMap &map)
{
int maxKeyWidth = 20;
QRegExp reKeyXt("^(.+)/(.+)$"); // for extracting keys/values
// first go over map and find longest key length
for(int i=0; i<map.keys().size(); i++)
{
QString k = map.keys().at(i);
QString key = k;
if (reKeyXt.exactMatch(k))
key = reKeyXt.cap(2);
if (key.size() > maxKeyWidth) maxKeyWidth = key.size();
}
// OK, this time actually write to the file - first non-section values
QString outputLine;
for(int i=0; i<map.keys().size(); i++)
{
QString k = map.keys().at(i);
if (!reKeyXt.exactMatch(k))
{
// this is for those keys without a section
outputLine = QString("%1=%2\n").arg(k,map[k].toString());
device.write(outputLine.toUtf8());
}
}
return true;
}
bool writeXmlFile(QIODevice &device, const QSettings::SettingsMap &map)
{
QXmlStreamWriter xmlWriter(&device);
xmlWriter.setAutoFormatting(true);
xmlWriter.writeStartDocument();
xmlWriter.writeStartElement("Settings");
QStringList prev_elements;
QSettings::SettingsMap::ConstIterator map_i;
// Alle Elemente der Map durchlaufen
for (map_i = map.begin(); map_i != map.end(); map_i++) {
QStringList elements = map_i.key().split("/");
int x = 0;
// Zu schließende Elemente ermitteln
while (x < prev_elements.size() && elements.at(x) == prev_elements.at(x)) {
x++;
}
// Elemente schließen
for (int i = prev_elements.size() - 1; i >= x; i--) {
xmlWriter.writeEndElement();
}
// Elemente öffnen
for (int i = x; i < elements.size(); i++) {
xmlWriter.writeStartElement(elements.at(i));
}
// Wert eintragen
xmlWriter.writeCharacters(map_i.value().toString());
prev_elements = elements;
}
// Noch offene Elemente schließen
for (int i = 0; i < prev_elements.size(); i++) {
xmlWriter.writeEndElement();
}
xmlWriter.writeEndElement();
xmlWriter.writeEndDocument();
return true;
}
bool writeSettings(QIODevice &device, const QSettings::SettingsMap &map)
{
try {
YAML::Emitter out;
SettingsIterator it = map.begin();
writeGroup( "", out, it, map );
device.write(out.c_str());
return true;
}
catch (std::exception & e) {
qWarning() << "Exception when writing YAML config file:" << e.what();
return false;
}
}
// Functions to parse plist format are borrowed from pluginsystem.cpp from qutIM instant messenger (see:
// http://www.qutim.org/)
QSettings::SettingsMap parseDict(const QDomNode &rootElement)
{
QSettings::SettingsMap styleHash;
if (rootElement.isNull())
return styleHash;
QDomNode subelement = rootElement;
QString key;
for (QDomNode node = subelement.firstChild(); !node.isNull(); node = node.nextSibling())
{
QDomElement element = node.toElement();
if (element.nodeName() == "key")
key = element.text();
else
{
QVariant value;
if (element.nodeName() == "true")
value = QVariant(true);
else if (element.nodeName() == "false")
value = QVariant(false);
else if (element.nodeName() == "real")
value = QVariant(element.text().toDouble());
else if (element.nodeName() == "string")
value = QVariant(element.text());
else if (element.nodeName() == "integer")
value = QVariant(element.text().toInt());
else if (element.nodeName() == "dict")
value = parseDict(node);
styleHash.insert(key, value);
}
}
return styleHash;
}
static void writeGroup( const QString &groupKey, YAML::Emitter &out,
SettingsIterator &it, const QSettings::SettingsMap &map )
{
out << YAML::BeginMap;
int groupKeyLen = groupKey.size();
while(it != map.end())
{
QString key( it.key() );
if (!key.startsWith(groupKey)) break;
int i_separ = key.indexOf("/", groupKeyLen);
if (i_separ != -1) {
// There is child nodes
key.truncate( i_separ + 1 );
QString yamlKey(key);
yamlKey.remove(0, groupKeyLen);
yamlKey.chop(1);
out << YAML::Key << yamlKey.toStdString();
out << YAML::Value;
writeGroup( key, out, it, map );
}
else
{
// There is no child nodes
key.remove(0, groupKeyLen);
out << YAML::Key << key.toStdString();
out << YAML::Value;
writeValue( it.value(), out );
++it;
}
}
out << YAML::EndMap;
}
QJsonDocument variantMapToJsonDocument(const QSettings::SettingsMap& map) {
QJsonObject object;
for (auto it = map.cbegin(); it != map.cend(); ++it) {
auto& key = it.key();
auto& variant = it.value();
auto variantType = variant.type();
// Switch some types so they are readable/modifiable in the json file
if (variantType == QVariant(1.0f).type()) { // float
variantType = QVariant::Double;
}
if (variantType == QVariant((quint16)0).type()) { // uint16
variantType = QVariant::UInt;
}
if (variantType == QVariant::Url) { // QUrl
variantType = QVariant::String;
}
switch (variantType) {
case QVariant::Hash: {
qCritical() << "Unsupported variant type" << variant.typeName() << ";" << key << variant;
Q_ASSERT(false);
break;
}
case QVariant::Invalid:
object.insert(key, QJsonValue());
break;
case QVariant::LongLong:
case QVariant::ULongLong:
case QVariant::Int:
case QVariant::UInt:
case QVariant::Bool:
case QVariant::Double:
case QVariant::Map:
case QVariant::List:
object.insert(key, QJsonValue::fromVariant(variant));
break;
case QVariant::String: {
QString result = variant.toString();
if (result.startsWith(QLatin1Char('@'))) {
result.prepend(QLatin1Char('@'));
}
object.insert(key, result);
break;
}
case QVariant::ByteArray: {
QByteArray a = variant.toByteArray();
QString result = QLatin1String("@ByteArray(");
result += QString::fromLatin1(a.constData(), a.size());
result += QLatin1Char(')');
object.insert(key, result);
break;
}
case QVariant::Rect: {
QRect r = qvariant_cast<QRect>(variant);
QString result = QLatin1String("@Rect(");
result += QString::number(r.x());
result += QLatin1Char(' ');
result += QString::number(r.y());
result += QLatin1Char(' ');
result += QString::number(r.width());
result += QLatin1Char(' ');
result += QString::number(r.height());
result += QLatin1Char(')');
object.insert(key, result);
break;
}
case QVariant::Size: {
QSize s = qvariant_cast<QSize>(variant);
QString result = QLatin1String("@Size(");
result += QString::number(s.width());
result += QLatin1Char(' ');
result += QString::number(s.height());
result += QLatin1Char(')');
object.insert(key, result);
break;
}
case QVariant::Point: {
QPoint p = qvariant_cast<QPoint>(variant);
QString result = QLatin1String("@Point(");
result += QString::number(p.x());
result += QLatin1Char(' ');
result += QString::number(p.y());
result += QLatin1Char(')');
object.insert(key, result);
break;
}
default: {
QByteArray array;
{
QDataStream stream(&array, QIODevice::WriteOnly);
stream.setVersion(QDataStream::Qt_4_0);
stream << variant;
}
QString result = QLatin1String("@Variant(");
result += QString::fromLatin1(array.constData(), array.size());
result += QLatin1Char(')');
object.insert(key, result);
break;
}
}
}
return QJsonDocument(object);
}
