// License: GPL. For details, see LICENSE file.
package cadastre_fr;
import static org.openstreetmap.josm.tools.I18n.tr;
import java.io.File;
import java.io.IOException;
import java.net.URLDecoder;
import javax.xml.xpath.XPath;
import javax.xml.xpath.XPathConstants;
import javax.xml.xpath.XPathExpression;
import javax.xml.xpath.XPathExpressionException;
import javax.xml.xpath.XPathFactory;
import org.openstreetmap.josm.gui.layer.Layer;
import org.openstreetmap.josm.gui.progress.ProgressMonitor;
import org.openstreetmap.josm.io.IllegalDataException;
import org.openstreetmap.josm.io.session.SessionLayerImporter;
import org.openstreetmap.josm.io.session.SessionReader.ImportSupport;
import org.w3c.dom.Element;
public class CadastreSessionImporter implements SessionLayerImporter {
@Override
public Layer load(Element elem, ImportSupport support,
ProgressMonitor progressMonitor) throws IOException,
IllegalDataException {
String version = elem.getAttribute("version");
if (!"0.1".equals(version)) {
throw new IllegalDataException(tr("Version ''{0}'' of meta data for imagery layer is not supported. Expected: 0.1", version));
}
try {
XPathFactory xPathFactory = XPathFactory.newInstance();
XPath xpath = xPathFactory.newXPath();
XPathExpression fileExp = xpath.compile("file/text()");
String fileStr = (String) fileExp.evaluate(elem, XPathConstants.STRING);
if (fileStr == null || fileStr.isEmpty()) {
throw new IllegalDataException(tr("File name expected for layer no. {0}", support.getLayerIndex()));
}
fileStr = URLDecoder.decode(fileStr, "UTF-8");
fileStr = fileStr.substring(fileStr.indexOf(":/")+2);
String filename = fileStr.substring(fileStr.lastIndexOf('/')+1, fileStr.length());
String ext = (filename.lastIndexOf('.') == -1) ? "" : filename.substring(filename.lastIndexOf('.')+1, filename.length());
// create layer and load cache
if (ext.length() == 3 && ext.substring(0, CacheControl.C_LAMBERT_CC_9Z.length()).equals(CacheControl.C_LAMBERT_CC_9Z))
ext = ext.substring(2);
else if (ext.length() == 4 && ext.substring(0, CacheControl.C_UTM20N.length()).equals(CacheControl.C_UTM20N))
ext = ext.substring(3);
else if (ext.length() == 2 || ext.length() > 4)
throw new IllegalDataException(tr("Unexpected file extension. {0}", ext));
int layoutZone = Integer.parseInt(ext)-1;
WMSLayer wmsLayer = new WMSLayer("", "", layoutZone);
File file = new File(fileStr);
wmsLayer.grabThread.getCacheControl().loadCache(file, layoutZone);
return wmsLayer;
} catch (XPathExpressionException e) {
throw new RuntimeException(e);
}
}
}