1 | // License: GPL. For details, see LICENSE file.
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2 | package org.openstreetmap.josm.io.session;
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3 |
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4 | import static org.openstreetmap.josm.tools.I18n.tr;
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5 |
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6 | import java.io.IOException;
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7 | import java.io.InputStream;
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8 |
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9 | import javax.xml.xpath.XPath;
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10 | import javax.xml.xpath.XPathConstants;
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11 | import javax.xml.xpath.XPathExpression;
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12 | import javax.xml.xpath.XPathExpressionException;
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13 | import javax.xml.xpath.XPathFactory;
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14 |
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15 | import org.openstreetmap.josm.gui.io.importexport.GpxImporter;
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16 | import org.openstreetmap.josm.gui.io.importexport.NMEAImporter;
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17 | import org.openstreetmap.josm.gui.layer.GpxLayer;
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18 | import org.openstreetmap.josm.gui.layer.Layer;
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19 | import org.openstreetmap.josm.gui.progress.ProgressMonitor;
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20 | import org.openstreetmap.josm.io.IllegalDataException;
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21 | import org.w3c.dom.Element;
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22 |
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23 | /**
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24 | * Session exporter for {@link GpxLayer}.
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25 | * @since 5501
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26 | */
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27 | public class GpxTracksSessionImporter implements SessionLayerImporter {
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28 |
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29 | @Override
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30 | public Layer load(Element elem, SessionReader.ImportSupport support, ProgressMonitor progressMonitor)
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31 | throws IOException, IllegalDataException {
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32 | String version = elem.getAttribute("version");
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33 | if (!"0.1".equals(version)) {
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34 | throw new IllegalDataException(tr("Version ''{0}'' of meta data for gpx track layer is not supported. Expected: 0.1", version));
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35 | }
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36 | try {
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37 | XPathFactory xPathFactory = XPathFactory.newInstance();
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38 | XPath xpath = xPathFactory.newXPath();
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39 | XPathExpression fileExp = xpath.compile("file/text()");
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40 | String fileStr = (String) fileExp.evaluate(elem, XPathConstants.STRING);
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41 | if (fileStr == null || fileStr.isEmpty()) {
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42 | throw new IllegalDataException(tr("File name expected for layer no. {0}", support.getLayerIndex()));
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43 | }
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44 |
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45 | try (InputStream in = support.getInputStream(fileStr)) {
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46 | GpxImporter.GpxImporterData importData;
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47 |
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48 | if (NMEAImporter.FILE_FILTER.acceptName(fileStr)) {
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49 | importData = NMEAImporter.loadLayers(in, support.getFile(fileStr), support.getLayerName(), null);
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50 | } else {
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51 | importData = GpxImporter.loadLayers(in, support.getFile(fileStr), support.getLayerName(), null, progressMonitor);
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52 | }
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53 |
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54 | support.addPostLayersTask(importData.getPostLayerTask());
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55 | return importData.getGpxLayer();
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56 | }
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57 |
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58 | } catch (XPathExpressionException e) {
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59 | throw new IllegalDataException(e);
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60 | }
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61 | }
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62 | }
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