1 | // License: GPL. For details, see LICENSE file.
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2 | package org.openstreetmap.josm.io.remotecontrol.handler;
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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.ByteArrayInputStream;
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7 | import java.nio.charset.StandardCharsets;
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8 |
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9 | import org.openstreetmap.josm.Main;
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10 | import org.openstreetmap.josm.actions.downloadtasks.DownloadOsmTask;
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11 | import org.openstreetmap.josm.data.osm.DataSet;
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12 | import org.openstreetmap.josm.io.IllegalDataException;
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13 | import org.openstreetmap.josm.io.OsmReader;
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14 | import org.openstreetmap.josm.io.remotecontrol.PermissionPrefWithDefault;
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15 | import org.openstreetmap.josm.tools.Utils;
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16 |
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17 | /**
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18 | * Handler to load data directly from the URL.
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19 | * @since 7636
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20 | */
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21 | public class LoadDataHandler extends RequestHandler {
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22 |
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23 | private static final String OSM_MIME_TYPE = "application/x-osm+xml";
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24 |
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25 | /**
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26 | * The remote control command name used to import data.
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27 | */
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28 | public static final String command = "load_data";
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29 |
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30 | /**
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31 | * Holds the data input string
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32 | */
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33 | private String data;
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34 |
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35 | /**
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36 | * Holds the parsed data set
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37 | */
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38 | private DataSet dataSet;
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39 |
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40 | @Override
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41 | protected void handleRequest() throws RequestHandlerErrorException {
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42 | Main.worker.submit(new LoadDataTask(isLoadInNewLayer(), dataSet, args.get("layer_name")));
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43 | }
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44 |
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45 | @Override
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46 | public String[] getMandatoryParams() {
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47 | return new String[]{"data"};
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48 | }
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49 |
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50 | @Override
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51 | public String[] getOptionalParams() {
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52 | return new String[] {"new_layer", "mime_type", "layer_name"};
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53 | }
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54 |
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55 | @Override
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56 | public String getUsage() {
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57 | return "Reads data encoded directly in the URL and adds it to the current data set";
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58 | }
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59 |
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60 | @Override
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61 | public String[] getUsageExamples() {
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62 | return new String[]{
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63 | "/load_data?layer_name=extra_layer&new_layer=true&data=" +
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64 | Utils.encodeUrl("<osm version='0.6'><node id='-1' lat='1' lon='2' /></osm>")};
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65 | }
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66 |
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67 | @Override
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68 | public String getPermissionMessage() {
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69 | return tr("Remote Control has been asked to load the following data:")
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70 | + "<br>" + data;
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71 | }
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72 |
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73 | @Override
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74 | public PermissionPrefWithDefault getPermissionPref() {
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75 | // Same permission as the import data, as the difference from a user pov is minimal
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76 | return PermissionPrefWithDefault.IMPORT_DATA;
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77 | }
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78 |
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79 | @Override
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80 | protected void validateRequest() throws RequestHandlerBadRequestException {
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81 | this.data = args.get("data");
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82 | /**
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83 | * Holds the mime type. Currently only OSM_MIME_TYPE is supported
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84 | * But it could be extended to text/csv, application/gpx+xml, ... or even binary encoded data
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85 | */
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86 | final String mimeType = Utils.firstNonNull(args.get("mime_type"), OSM_MIME_TYPE);
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87 | try {
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88 | if (OSM_MIME_TYPE.equals(mimeType)) {
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89 | final ByteArrayInputStream in = new ByteArrayInputStream(data.getBytes(StandardCharsets.UTF_8));
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90 | dataSet = OsmReader.parseDataSet(in, null);
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91 | } else {
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92 | dataSet = new DataSet();
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93 | }
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94 | } catch (IllegalDataException e) {
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95 | throw new RequestHandlerBadRequestException("Failed to parse " + data + ": " + e.getMessage(), e);
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96 | }
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97 | }
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98 |
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99 | protected static class LoadDataTask extends DownloadOsmTask.AbstractInternalTask {
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100 |
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101 | protected final String layerName;
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102 |
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103 | /**
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104 | * Constructs a new {@code LoadDataTask}.
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105 | * @param newLayer if {@code true}, force download to a new layer
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106 | * @param dataSet data set
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107 | * @param layerName layer name
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108 | */
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109 | public LoadDataTask(boolean newLayer, DataSet dataSet, String layerName) {
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110 | super(newLayer, tr("Loading data"), false, true);
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111 | this.dataSet = dataSet;
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112 | this.layerName = layerName;
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113 | }
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114 |
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115 | @Override
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116 | public void realRun() {
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117 | // No real run, the data is already loaded
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118 | }
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119 |
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120 | @Override
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121 | protected void cancel() {
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122 | // No Cancel, would be hard without a real run
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123 | }
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124 |
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125 | @Override
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126 | protected void finish() {
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127 | loadData(layerName, null);
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128 | }
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129 | }
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130 | }
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