/**
* @brief Convert an XML stream to a hierarchical QVariantMap.
*
* This function is used internally to embed opaque XML structures, such as the
* SQS service's ErrorResponse::Error::Detail, which the SQS schema defines as
* an arbitrary complex type.
*
* @note This static function exists within the AwsAbstractResponse for
* historic reasons. It should probably be moved our of this class, and
* into a more generic utility space at some point.
*
* @param xml XML stream to convert.
* @param prefix Prefix to apply to special (non-element) child entry names.
* @param maxDepth Maximum depth to traverse before truncating the tree.
*
* @return A QVariantMap representing the \a xml XML fragment.
*
* @todo Move this toVariant function to somewhere more generic.
*/
QVariantMap AwsAbstractResponse::toVariant(
QXmlStreamReader &xml, const QString &prefix, const int maxDepth)
{
if (maxDepth < 0) {
qWarning() << QObject::tr("max depth exceeded");
return QVariantMap();
}
if (xml.hasError()) {
qWarning() << xml.errorString();
return QVariantMap();
}
if (xml.tokenType() == QXmlStreamReader::NoToken)
xml.readNext();
if ((xml.tokenType() != QXmlStreamReader::StartDocument) &&
(xml.tokenType() != QXmlStreamReader::StartElement)) {
qWarning() << QObject::tr("unexpected XML tokenType %1 (%2)")
.arg(xml.tokenString()).arg(xml.tokenType());
return QVariantMap();
}
QVariantMap map;
if (xml.tokenType() == QXmlStreamReader::StartDocument) {
map.insert(prefix + QLatin1String("DocumentEncoding"), xml.documentEncoding().toString());
map.insert(prefix + QLatin1String("DocumentVersion"), xml.documentVersion().toString());
map.insert(prefix + QLatin1String("StandaloneDocument"), xml.isStandaloneDocument());
} else {
if (!xml.namespaceUri().isEmpty())
map.insert(prefix + QLatin1String("NamespaceUri"), xml.namespaceUri().toString());
foreach (const QXmlStreamAttribute &attribute, xml.attributes()) {
QVariantMap attributeMap;
attributeMap.insert(QLatin1String("Value"), attribute.value().toString());
if (!attribute.namespaceUri().isEmpty())
attributeMap.insert(QLatin1String("NamespaceUri"), attribute.namespaceUri().toString());
if (!attribute.prefix().isEmpty())
attributeMap.insert(QLatin1String("Prefix"), attribute.prefix().toString());
attributeMap.insert(QLatin1String("QualifiedName"), attribute.qualifiedName().toString());
map.insertMulti(prefix + attribute.name().toString(), attributeMap);
}
}
for (xml.readNext(); (!xml.atEnd()) && (xml.tokenType() != QXmlStreamReader::EndElement)
&& (xml.tokenType() != QXmlStreamReader::EndDocument); xml.readNext()) {
switch (xml.tokenType()) {
case QXmlStreamReader::Characters:
case QXmlStreamReader::Comment:
case QXmlStreamReader::DTD:
case QXmlStreamReader::EntityReference:
map.insertMulti(prefix + xml.tokenString(), xml.text().toString());
break;
case QXmlStreamReader::ProcessingInstruction:
map.insertMulti(prefix + xml.processingInstructionTarget().toString(),
xml.processingInstructionData().toString());
break;
case QXmlStreamReader::StartElement: {
const QString elementName = xml.name().toString();
map.insertMulti(elementName, toVariant(xml, prefix, maxDepth-1));
break;
}
default:
qWarning() << QObject::tr("unexpected XML tokenType %1 (%2)")
.arg(xml.tokenString()).arg(xml.tokenType());
}
}
return map;
}
