bool QLandmarkFileHandlerGpx::readGpx()
{
/*
<xsd:complexType name="gpxType">
<xsd:sequence>
<xsd:element name="metadata" type="metadataType" minOccurs="0" />
<xsd:element name="wpt" type="wptType" minOccurs="0" maxOccurs="unbounded" />
<xsd:element name="rte" type="rteType" minOccurs="0" maxOccurs="unbounded" />
<xsd:element name="trk" type="trkType" minOccurs="0" maxOccurs="unbounded" />
<xsd:element name="extensions" type="extensionsType" minOccurs="0" />
</xsd:sequence>
<xsd:attribute name="version" type="xsd:string" use="required" fixed="1.1" />
<xsd:attribute name="creator" type="xsd:string" use="required" />
</xsd:complexType>
*/
if (!m_reader->readNextStartElement()) {
m_reader->raiseError("Expected a root element named \"gpx\" (no root element found).");
return false;
}
if (m_reader->name() != "gpx") {
m_reader->raiseError(QString("The root element is expected to have the name \"gpx\" (root element was named \"%1\").").arg(m_reader->name().toString()));
return false;
}
if (m_reader->attributes().hasAttribute("version")) {
QString version = m_reader->attributes().value("version").toString();
if (version != "1.1") {
m_reader->raiseError(QString("Only version 1.1. of the GPX schema is supported (version found was \"%1\").").arg(version));
return false;
}
} else {
m_reader->raiseError("The element \"gpx\" did not have the required attribute \"version\".");
return false;
}
if (m_reader->attributes().hasAttribute("creator")) {
// Not used outside of schema compliance check
} else {
m_reader->raiseError("The element \"gpx\" did not have the required attribute \"creator\".");
return false;
}
if (!m_reader->readNextStartElement()) {
m_reader->skipCurrentElement();
return true;
}
if (m_reader->name() == "metadata") {
// Not used outside of schema compliance check
m_reader->skipCurrentElement();
if (!m_reader->readNextStartElement()) {
m_reader->skipCurrentElement();
return true;
}
}
while (m_reader->name() == "wpt") {
if (m_cancel && (*m_cancel==true)) {
m_errorCode = QLandmarkManager::CancelError;
m_errorString = "Import of gpx file was canceled";
return false;
}
QLandmark landmark;
if (!readWaypoint(landmark, "wpt")) {
return false;
}
m_waypoints.append(landmark);
if(!m_reader->readNextStartElement()) {
m_reader->skipCurrentElement();
return true;
}
}
while (m_reader->name() == "rte") {
if (m_cancel && (*m_cancel==true)) {
m_errorCode = QLandmarkManager::CancelError;
m_errorString = "Import of gpx file was canceled";
return false;
}
QList<QLandmark> route;
if (!readRoute(route))
return false;
m_routes.append(route);
if(!m_reader->readNextStartElement()) {
m_reader->skipCurrentElement();
return true;
}
}
while (m_reader->name() == "trk") {
if (m_cancel && (*m_cancel==true)) {
m_errorCode = QLandmarkManager::CancelError;
m_errorString = "Import of gpx file was canceled";
return false;
}
QList<QLandmark> track;
if (!readTrack(track))
return false;
m_tracks.append(track);
if(!m_reader->readNextStartElement()) {
m_reader->skipCurrentElement();
return true;
}
}
if (m_reader->name() == "extensions") {
// Not used outside of schema compliance check
m_reader->skipCurrentElement();
if (!m_reader->readNextStartElement()) {
m_reader->skipCurrentElement();
return true;
}
}
m_reader->raiseError(QString("The element \"gpx\" did not expect a child element named \"%1\" at this point (unknown child element or child element out of order).").arg(m_reader->name().toString()));
return false;
}
bool QLandmarkFileHandlerGpx::readRoute(QList<QLandmark> &route)
{
/*
<xsd:complexType name="rteType">
<xsd:sequence>
<xsd:element name="name" type="xsd:string" minOccurs="0" />
<xsd:element name="cmt" type="xsd:string" minOccurs="0" />
<xsd:element name="desc" type="xsd:string" minOccurs="0" />
<xsd:element name="src" type="xsd:string" minOccurs="0" />
<xsd:element name="link" type="linkType" minOccurs="0" maxOccurs="unbounded" />
<xsd:element name="number" type="xsd:nonNegativeInteger" minOccurs="0" />
<xsd:element name="type" type="xsd:string" minOccurs="0" />
<xsd:element name="extensions" type="extensionsType" minOccurs="0" />
<xsd:element name="rtept" type="wptType" minOccurs="0" maxOccurs="unbounded" />
</xsd:sequence>
</xsd:complexType>
*/
Q_ASSERT(m_reader->isStartElement()
&& (m_reader->name() == "rte"));
if (!m_reader->readNextStartElement())
return true;
QList<QString> unusedNames1;
unusedNames1 << "name";
unusedNames1 << "cmt";
unusedNames1 << "desc";
unusedNames1 << "src";
for (int i = 0; i < unusedNames1.size(); ++i) {
if (m_reader->name() == unusedNames1.at(i)) {
// Not used outside of schema compliance check
m_reader->skipCurrentElement();
if (!m_reader->readNextStartElement())
return true;
}
}
while (m_reader->name() == "link") {
// Not used outside of schema compliance check
m_reader->skipCurrentElement();
if (!m_reader->readNextStartElement())
return true;
}
QList<QString> unusedNames2;
unusedNames2 << "number";
unusedNames2 << "type";
unusedNames2 << "extensions";
for (int i = 0; i < unusedNames2.size(); ++i) {
if (m_reader->name() == unusedNames2.at(i)) {
// Not used outside of schema compliance check
m_reader->skipCurrentElement();
if (!m_reader->readNextStartElement())
return true;
}
}
while (m_reader->name() == "rtept") {
QLandmark landmark;
if (!readWaypoint(landmark, "rtept"))
return false;
route << landmark;
if (!m_reader->readNextStartElement())
return true;
}
m_reader->raiseError(QString("The element \"rte\" did not expect a child element named \"%1\" at this point (unknown child element or child element out of order).").arg(m_reader->name().toString()));
return false;
}
bool QgsGPXFeatureIterator::fetchFeature( QgsFeature &feature )
{
feature.setValid( false );
if ( mClosed )
return false;
if ( mRequest.filterType() == QgsFeatureRequest::FilterFid )
{
bool res = readFid( feature );
close();
if ( res )
geometryToDestinationCrs( feature, mTransform );
return res;
}
if ( mSource->mFeatureType == QgsGPXProvider::WaypointType )
{
// go through the list of waypoints and return the first one that is in
// the bounds rectangle
for ( ; mWptIter != mSource->data->waypointsEnd(); ++mWptIter )
{
if ( readWaypoint( *mWptIter, feature ) )
{
++mWptIter;
geometryToDestinationCrs( feature, mTransform );
return true;
}
}
}
else if ( mSource->mFeatureType == QgsGPXProvider::RouteType )
{
// go through the routes and return the first one that is in the bounds
// rectangle
for ( ; mRteIter != mSource->data->routesEnd(); ++mRteIter )
{
if ( readRoute( *mRteIter, feature ) )
{
++mRteIter;
geometryToDestinationCrs( feature, mTransform );
return true;
}
}
}
else if ( mSource->mFeatureType == QgsGPXProvider::TrackType )
{
// go through the tracks and return the first one that is in the bounds
// rectangle
for ( ; mTrkIter != mSource->data->tracksEnd(); ++mTrkIter )
{
if ( readTrack( *mTrkIter, feature ) )
{
++mTrkIter;
geometryToDestinationCrs( feature, mTransform );
return true;
}
}
}
close();
return false;
}