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Extended error checking
This commit is contained in:
parent
688e309ef7
commit
fa99d01a77
197
src/map/wmts.cpp
197
src/map/wmts.cpp
@ -12,9 +12,9 @@
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Downloader *WMTS::_downloader = 0;
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bool WMTS::createProjection()
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bool WMTS::createProjection(const QString &crs)
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{
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QStringList list(_crs.split(':'));
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QStringList list(crs.split(':'));
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QString authority, code;
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bool res;
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int epsg;
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@ -92,24 +92,24 @@ WMTS::TileMatrix WMTS::tileMatrix(QXmlStreamReader &reader, bool yx)
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return matrix;
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}
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void WMTS::tileMatrixSet(QXmlStreamReader &reader, const QString &set, bool yx)
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void WMTS::tileMatrixSet(CTX &ctx)
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{
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QString id, crs;
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QSet<TileMatrix> matrixes;
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while (reader.readNextStartElement()) {
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if (reader.name() == "Identifier")
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id = reader.readElementText();
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else if (reader.name() == "SupportedCRS")
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crs = reader.readElementText();
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else if (reader.name() == "TileMatrix")
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matrixes.insert(tileMatrix(reader, yx));
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while (ctx.reader.readNextStartElement()) {
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if (ctx.reader.name() == "Identifier")
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id = ctx.reader.readElementText();
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else if (ctx.reader.name() == "SupportedCRS")
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crs = ctx.reader.readElementText();
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else if (ctx.reader.name() == "TileMatrix")
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matrixes.insert(tileMatrix(ctx.reader, ctx.setup.yx));
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else
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reader.skipCurrentElement();
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ctx.reader.skipCurrentElement();
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}
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if (id == set) {
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_crs = crs;
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if (id == ctx.setup.set) {
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ctx.crs = crs;
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_matrixes = matrixes;
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}
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}
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@ -153,23 +153,25 @@ QSet<WMTS::MatrixLimits> WMTS::tileMatrixSetLimits(QXmlStreamReader &reader)
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return limits;
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}
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void WMTS::tileMatrixSetLink(QXmlStreamReader &reader, const QString &set)
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void WMTS::tileMatrixSetLink(CTX &ctx)
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{
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QString id;
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QSet<MatrixLimits> limits;
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while (reader.readNextStartElement()) {
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if (reader.name() == "TileMatrixSet")
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id = reader.readElementText();
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else if (reader.name() == "TileMatrixSetLimits")
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limits = tileMatrixSetLimits(reader);
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while (ctx.reader.readNextStartElement()) {
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if (ctx.reader.name() == "TileMatrixSet")
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id = ctx.reader.readElementText();
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else if (ctx.reader.name() == "TileMatrixSetLimits")
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limits = tileMatrixSetLimits(ctx.reader);
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else
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reader.skipCurrentElement();
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ctx.reader.skipCurrentElement();
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}
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if (id == set)
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if (id == ctx.setup.set) {
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ctx.set = true;
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_limits = limits;
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}
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}
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RectC WMTS::wgs84BoundingBox(QXmlStreamReader &reader)
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{
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@ -189,83 +191,137 @@ RectC WMTS::wgs84BoundingBox(QXmlStreamReader &reader)
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return RectC(topLeft, bottomRight);
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}
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void WMTS::layer(QXmlStreamReader &reader, const QString &layer,
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const QString &set)
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QString WMTS::style(QXmlStreamReader &reader)
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{
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QString id;
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RectC bounds;
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QString tpl;
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while (reader.readNextStartElement()) {
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if (reader.name() == "Identifier")
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id = reader.readElementText();
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else if (reader.name() == "TileMatrixSetLink")
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tileMatrixSetLink(reader, set);
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else if (reader.name() == "WGS84BoundingBox")
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bounds = wgs84BoundingBox(reader);
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else if (reader.name() == "ResourceURL") {
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const QXmlStreamAttributes &attr = reader.attributes();
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else
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reader.skipCurrentElement();
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}
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return id;
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}
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void WMTS::layer(CTX &ctx)
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{
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QString id, tpl;
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RectC bounds;
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QStringList formats, styles;
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while (ctx.reader.readNextStartElement()) {
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if (ctx.reader.name() == "Identifier")
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id = ctx.reader.readElementText();
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else if (ctx.reader.name() == "TileMatrixSetLink")
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tileMatrixSetLink(ctx);
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else if (ctx.reader.name() == "WGS84BoundingBox")
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bounds = wgs84BoundingBox(ctx.reader);
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else if (ctx.reader.name() == "ResourceURL") {
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const QXmlStreamAttributes &attr = ctx.reader.attributes();
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if (attr.value("resourceType") == "tile")
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tpl = attr.value("template").toString();
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reader.skipCurrentElement();
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} else
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reader.skipCurrentElement();
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ctx.reader.skipCurrentElement();
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} else if (ctx.reader.name() == "Style")
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styles.append(style(ctx.reader));
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else if (ctx.reader.name() == "Format")
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formats.append(ctx.reader.readElementText());
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else
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ctx.reader.skipCurrentElement();
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}
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if (id == layer) {
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if (id == ctx.setup.layer) {
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ctx.layer = true;
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_bounds = bounds;
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if (ctx.setup.rest)
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_tileUrl = tpl;
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if (styles.contains(ctx.setup.style))
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ctx.style = true;
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if (formats.contains(ctx.setup.format))
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ctx.format = true;
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}
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}
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void WMTS::contents(QXmlStreamReader &reader, const QString &layer,
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const QString &set, bool yx)
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void WMTS::contents(CTX &ctx)
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{
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while (reader.readNextStartElement()) {
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if (reader.name() == "TileMatrixSet")
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tileMatrixSet(reader, set, yx);
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else if (reader.name() == "Layer")
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WMTS::layer(reader, layer, set);
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while (ctx.reader.readNextStartElement()) {
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if (ctx.reader.name() == "TileMatrixSet")
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tileMatrixSet(ctx);
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else if (ctx.reader.name() == "Layer")
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layer(ctx);
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else
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reader.skipCurrentElement();
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ctx.reader.skipCurrentElement();
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}
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}
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void WMTS::capabilities(QXmlStreamReader &reader, const QString &layer,
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const QString &set, bool yx)
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void WMTS::capabilities(CTX &ctx)
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{
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while (reader.readNextStartElement()) {
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if (reader.name() == "Contents")
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contents(reader, layer, set, yx);
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while (ctx.reader.readNextStartElement()) {
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if (ctx.reader.name() == "Contents")
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contents(ctx);
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else
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reader.skipCurrentElement();
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ctx.reader.skipCurrentElement();
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}
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}
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bool WMTS::parseCapabilities(const QString &path, const QString &layer,
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const QString &set, bool yx)
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bool WMTS::parseCapabilities(const QString &path, const Setup &setup)
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{
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QFile file(path);
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QXmlStreamReader reader;
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CTX ctx(setup);
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if (!file.open(QFile::ReadOnly | QFile::Text)) {
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_errorString = file.errorString();
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return false;
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}
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reader.setDevice(&file);
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if (reader.readNextStartElement()) {
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if (reader.name() == "Capabilities")
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capabilities(reader, layer, set, yx);
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ctx.reader.setDevice(&file);
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if (ctx.reader.readNextStartElement()) {
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if (ctx.reader.name() == "Capabilities")
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capabilities(ctx);
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else
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reader.raiseError("Not a Capabilities XML file");
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ctx.reader.raiseError("Not a Capabilities XML file");
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}
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if (ctx.reader.error()) {
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_errorString = QString("%1:%2: %3").arg(path).arg(
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ctx.reader.lineNumber()).arg(ctx.reader.errorString());
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return false;
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}
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_errorString = reader.error() ? QString("%1:%2: %3").arg(path)
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.arg(reader.lineNumber()).arg(reader.errorString()) : QString();
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if (!ctx.layer) {
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_errorString = ctx.setup.layer + ": layer not provided";
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return false;
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}
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if (!ctx.style) {
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_errorString = ctx.setup.style + ": style not provided";
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return false;
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}
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if (!ctx.setup.rest && !ctx.format) {
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_errorString = ctx.setup.format + ": format not provided";
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return false;
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}
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if (!ctx.set) {
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_errorString = ctx.setup.set + ": set not provided";
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return false;
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}
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if (ctx.crs.isNull()) {
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_errorString = "Missing CRS definition";
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return false;
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}
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if (!createProjection(ctx.crs)) {
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_errorString = ctx.crs + ": unknown CRS";
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return false;
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}
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if (_matrixes.isEmpty()) {
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_errorString = "No usable tile matrix found";
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return false;
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}
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if (ctx.setup.rest && _tileUrl.isNull()) {
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_errorString = "Missing tile URL template";
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return false;
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}
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return reader.error() ? false : true;
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return true;
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}
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bool WMTS::getCapabilities(const QString &url, const QString &file)
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@ -296,7 +352,7 @@ bool WMTS::load(const QString &file, const WMTS::Setup &setup)
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if (!QFileInfo(file).exists())
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if (!getCapabilities(capaUrl, file))
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return false;
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if (!parseCapabilities(file, setup.layer, setup.set, setup.yx))
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if (!parseCapabilities(file, setup))
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return false;
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if (!setup.rest)
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@ -312,23 +368,6 @@ bool WMTS::load(const QString &file, const WMTS::Setup &setup)
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_tileUrl.replace("{TileCol}", "$x");
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}
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if (_crs.isNull()) {
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_errorString = "Missing CRS definition";
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return false;
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}
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if (!createProjection()) {
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_errorString = _crs + ": unknown CRS";
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return false;
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}
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if (_matrixes.isEmpty()) {
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_errorString = "No usable tile matrix found";
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return false;
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}
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if (_tileUrl.isNull()) {
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_errorString = "Missing tile URL";
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return false;
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}
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return true;
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}
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@ -6,10 +6,10 @@
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#include <QSet>
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#include <QList>
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#include <QHash>
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#include <QXmlStreamReader>
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#include "common/rectc.h"
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#include "projection.h"
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class QXmlStreamReader;
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class Downloader;
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class WMTS
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@ -87,27 +87,37 @@ private:
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{return !id.isEmpty() && rect.isValid();}
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};
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bool createProjection();
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struct CTX {
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const Setup &setup;
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QXmlStreamReader reader;
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QString crs;
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bool layer;
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bool style;
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bool format;
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bool set;
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CTX(const Setup &setup) : setup(setup), layer(false), style(false),
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format(false), set(false) {}
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};
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RectC wgs84BoundingBox(QXmlStreamReader &reader);
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MatrixLimits tileMatrixLimits(QXmlStreamReader &reader);
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TileMatrix tileMatrix(QXmlStreamReader &reader, bool yx);
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QSet<MatrixLimits> tileMatrixSetLimits(QXmlStreamReader &reader);
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void tileMatrixSet(QXmlStreamReader &reader, const QString &set, bool yx);
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void tileMatrixSetLink(QXmlStreamReader &reader, const QString &set);
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void layer(QXmlStreamReader &reader, const QString &layer,
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const QString &set);
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void contents(QXmlStreamReader &reader, const QString &layer,
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const QString &set, bool yx);
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void capabilities(QXmlStreamReader &reader, const QString &layer,
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const QString &set, bool yx);
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bool parseCapabilities(const QString &path, const QString &layer,
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const QString &set, bool yx);
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QString style(QXmlStreamReader &reader);
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void tileMatrixSet(CTX &ctx);
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void tileMatrixSetLink(CTX &ctx);
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void layer(CTX &ctx);
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void contents(CTX &ctx);
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void capabilities(CTX &ctx);
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bool parseCapabilities(const QString &path, const Setup &setup);
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bool getCapabilities(const QString &url, const QString &file);
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bool createProjection(const QString &crs);
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QSet<TileMatrix> _matrixes;
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QSet<MatrixLimits> _limits;
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RectC _bounds;
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QString _crs;
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Projection _projection;
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QString _tileUrl;
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