[6380] | 1 | // License: GPL. For details, see LICENSE file.
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[18] | 2 | package org.openstreetmap.josm.io;
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| 3 |
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[916] | 4 | import static org.openstreetmap.josm.tools.I18n.tr;
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| 5 |
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[9732] | 6 | import java.io.IOException;
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[103] | 7 | import java.io.InputStream;
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[12992] | 8 | import java.net.Authenticator.RequestorType;
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[18] | 9 | import java.net.HttpURLConnection;
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[1670] | 10 | import java.net.MalformedURLException;
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[18] | 11 | import java.net.URL;
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[6803] | 12 | import java.util.List;
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[18] | 13 |
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[12510] | 14 | import javax.xml.parsers.ParserConfigurationException;
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| 15 |
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[4521] | 16 | import org.openstreetmap.josm.data.gpx.GpxData;
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[7531] | 17 | import org.openstreetmap.josm.data.notes.Note;
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[1146] | 18 | import org.openstreetmap.josm.data.osm.DataSet;
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[1811] | 19 | import org.openstreetmap.josm.gui.progress.ProgressMonitor;
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[11194] | 20 | import org.openstreetmap.josm.io.auth.CredentialsAgentException;
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| 21 | import org.openstreetmap.josm.io.auth.CredentialsManager;
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[9172] | 22 | import org.openstreetmap.josm.tools.HttpClient;
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[12620] | 23 | import org.openstreetmap.josm.tools.Logging;
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[12510] | 24 | import org.openstreetmap.josm.tools.Utils;
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| 25 | import org.openstreetmap.josm.tools.XmlParsingException;
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[13901] | 26 | import org.openstreetmap.josm.tools.XmlUtils;
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[12510] | 27 | import org.w3c.dom.Document;
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| 28 | import org.w3c.dom.Node;
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| 29 | import org.xml.sax.SAXException;
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[18] | 30 |
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| 31 | /**
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[228] | 32 | * This DataReader reads directly from the REST API of the osm server.
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[1169] | 33 | *
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[228] | 34 | * It supports plain text transfer as well as gzip or deflate encoded transfers;
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| 35 | * if compressed transfers are unwanted, set property osm-server.use-compression
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| 36 | * to false.
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[153] | 37 | *
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[18] | 38 | * @author imi
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| 39 | */
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[1146] | 40 | public abstract class OsmServerReader extends OsmConnection {
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[9078] | 41 | private final OsmApi api = OsmApi.getOsmApi();
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[11194] | 42 | private boolean doAuthenticate;
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[5494] | 43 | protected boolean gpxParsedProperly;
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[14216] | 44 | protected String contentType;
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[1664] | 45 |
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[1169] | 46 | /**
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[11194] | 47 | * Constructs a new {@code OsmServerReader}.
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| 48 | */
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| 49 | public OsmServerReader() {
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| 50 | try {
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[16422] | 51 | doAuthenticate = OsmApi.isUsingOAuth()
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| 52 | && CredentialsManager.getInstance().lookupOAuthAccessToken() != null
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| 53 | && OsmApi.USE_OAUTH_FOR_ALL_REQUESTS.get();
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[11194] | 54 | } catch (CredentialsAgentException e) {
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[12620] | 55 | Logging.warn(e);
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[11194] | 56 | }
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| 57 | }
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| 58 |
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| 59 | /**
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[1169] | 60 | * Open a connection to the given url and return a reader on the input stream
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| 61 | * from that connection. In case of user cancel, return <code>null</code>.
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[5863] | 62 | * Relative URL's are directed to API base URL.
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| 63 | * @param urlStr The url to connect to.
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| 64 | * @param progressMonitor progress monitoring and abort handler
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[6695] | 65 | * @return A reader reading the input stream (servers answer) or <code>null</code>.
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[8291] | 66 | * @throws OsmTransferException if data transfer errors occur
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[1169] | 67 | */
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[10378] | 68 | protected InputStream getInputStream(String urlStr, ProgressMonitor progressMonitor) throws OsmTransferException {
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[6695] | 69 | return getInputStream(urlStr, progressMonitor, null);
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| 70 | }
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| 71 |
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| 72 | /**
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| 73 | * Open a connection to the given url and return a reader on the input stream
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| 74 | * from that connection. In case of user cancel, return <code>null</code>.
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| 75 | * Relative URL's are directed to API base URL.
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| 76 | * @param urlStr The url to connect to.
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| 77 | * @param progressMonitor progress monitoring and abort handler
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| 78 | * @param reason The reason to show on console. Can be {@code null} if no reason is given
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| 79 | * @return A reader reading the input stream (servers answer) or <code>null</code>.
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[8291] | 80 | * @throws OsmTransferException if data transfer errors occur
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[6695] | 81 | */
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[10378] | 82 | protected InputStream getInputStream(String urlStr, ProgressMonitor progressMonitor, String reason) throws OsmTransferException {
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[1875] | 83 | try {
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[2035] | 84 | api.initialize(progressMonitor);
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[6695] | 85 | String url = urlStr.startsWith("http") ? urlStr : (getBaseUrl() + urlStr);
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| 86 | return getInputStreamRaw(url, progressMonitor, reason);
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[1875] | 87 | } finally {
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| 88 | progressMonitor.invalidate();
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| 89 | }
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[1670] | 90 | }
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[1664] | 91 |
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[5863] | 92 | /**
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[6695] | 93 | * Return the base URL for relative URL requests
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[5863] | 94 | * @return base url of API
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| 95 | */
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[5097] | 96 | protected String getBaseUrl() {
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| 97 | return api.getBaseUrl();
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| 98 | }
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| 99 |
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[5863] | 100 | /**
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| 101 | * Open a connection to the given url and return a reader on the input stream
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| 102 | * from that connection. In case of user cancel, return <code>null</code>.
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| 103 | * @param urlStr The exact url to connect to.
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| 104 | * @param progressMonitor progress monitoring and abort handler
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| 105 | * @return An reader reading the input stream (servers answer) or <code>null</code>.
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[8291] | 106 | * @throws OsmTransferException if data transfer errors occur
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[5863] | 107 | */
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[1811] | 108 | protected InputStream getInputStreamRaw(String urlStr, ProgressMonitor progressMonitor) throws OsmTransferException {
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[6695] | 109 | return getInputStreamRaw(urlStr, progressMonitor, null);
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| 110 | }
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[6787] | 111 |
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[6695] | 112 | /**
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| 113 | * Open a connection to the given url and return a reader on the input stream
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| 114 | * from that connection. In case of user cancel, return <code>null</code>.
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| 115 | * @param urlStr The exact url to connect to.
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| 116 | * @param progressMonitor progress monitoring and abort handler
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| 117 | * @param reason The reason to show on console. Can be {@code null} if no reason is given
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| 118 | * @return An reader reading the input stream (servers answer) or <code>null</code>.
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[8291] | 119 | * @throws OsmTransferException if data transfer errors occur
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[6695] | 120 | */
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| 121 | protected InputStream getInputStreamRaw(String urlStr, ProgressMonitor progressMonitor, String reason) throws OsmTransferException {
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[6803] | 122 | return getInputStreamRaw(urlStr, progressMonitor, reason, false);
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| 123 | }
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| 124 |
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| 125 | /**
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[12596] | 126 | * Open a connection to the given url (if HTTP, trough a GET request) and return a reader on the input stream
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[6803] | 127 | * from that connection. In case of user cancel, return <code>null</code>.
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| 128 | * @param urlStr The exact url to connect to.
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| 129 | * @param progressMonitor progress monitoring and abort handler
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| 130 | * @param reason The reason to show on console. Can be {@code null} if no reason is given
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| 131 | * @param uncompressAccordingToContentDisposition Whether to inspect the HTTP header {@code Content-Disposition}
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[13352] | 132 | * for {@code filename} and uncompress a gzip/bzip2/xz/zip stream.
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[6803] | 133 | * @return An reader reading the input stream (servers answer) or <code>null</code>.
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[8291] | 134 | * @throws OsmTransferException if data transfer errors occur
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[6803] | 135 | */
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[12596] | 136 | protected InputStream getInputStreamRaw(String urlStr, ProgressMonitor progressMonitor, String reason,
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| 137 | boolean uncompressAccordingToContentDisposition) throws OsmTransferException {
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| 138 | return getInputStreamRaw(urlStr, progressMonitor, reason, uncompressAccordingToContentDisposition, "GET", null);
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| 139 | }
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| 140 |
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| 141 | /**
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| 142 | * Open a connection to the given url (if HTTP, with the specified method) and return a reader on the input stream
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| 143 | * from that connection. In case of user cancel, return <code>null</code>.
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| 144 | * @param urlStr The exact url to connect to.
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| 145 | * @param progressMonitor progress monitoring and abort handler
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| 146 | * @param reason The reason to show on console. Can be {@code null} if no reason is given
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| 147 | * @param uncompressAccordingToContentDisposition Whether to inspect the HTTP header {@code Content-Disposition}
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[13352] | 148 | * for {@code filename} and uncompress a gzip/bzip2/xz/zip stream.
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[12596] | 149 | * @param httpMethod HTTP method ("GET", "POST" or "PUT")
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| 150 | * @param requestBody HTTP request body (for "POST" and "PUT" methods only). Must be null for "GET" method.
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| 151 | * @return An reader reading the input stream (servers answer) or <code>null</code>.
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| 152 | * @throws OsmTransferException if data transfer errors occur
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| 153 | * @since 12596
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| 154 | */
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[7033] | 155 | @SuppressWarnings("resource")
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[8509] | 156 | protected InputStream getInputStreamRaw(String urlStr, ProgressMonitor progressMonitor, String reason,
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[12596] | 157 | boolean uncompressAccordingToContentDisposition, String httpMethod, byte[] requestBody) throws OsmTransferException {
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[1608] | 158 | try {
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[16426] | 159 | if (NetworkManager.isOffline(urlStr)) {
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| 160 | throw new OsmApiException(new OfflineAccessException(tr("{0} not available (offline mode)", urlStr)));
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| 161 | }
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[7434] | 162 |
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[1875] | 163 | URL url = null;
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| 164 | try {
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[3021] | 165 | url = new URL(urlStr.replace(" ", "%20"));
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[8510] | 166 | } catch (MalformedURLException e) {
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[1875] | 167 | throw new OsmTransferException(e);
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| 168 | }
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[228] | 169 |
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[13356] | 170 | String protocol = url.getProtocol();
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| 171 | if ("file".equals(protocol) || "jar".equals(protocol)) {
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[9732] | 172 | try {
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[13356] | 173 | return Utils.openStream(url);
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[9732] | 174 | } catch (IOException e) {
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| 175 | throw new OsmTransferException(e);
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| 176 | }
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| 177 | }
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| 178 |
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[12596] | 179 | final HttpClient client = HttpClient.create(url, httpMethod)
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[15969] | 180 | .setAccept("application/xml, */*;q=0.8")
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[12596] | 181 | .setFinishOnCloseOutput(false)
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| 182 | .setReasonForRequest(reason)
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[12711] | 183 | .setOutputMessage(tr("Downloading data..."))
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[12596] | 184 | .setRequestBody(requestBody);
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[9309] | 185 | activeConnection = client;
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[9308] | 186 | adaptRequest(client);
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[2641] | 187 | if (doAuthenticate) {
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[9172] | 188 | addAuth(client);
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[2124] | 189 | }
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[2641] | 190 | if (cancel)
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[8415] | 191 | throw new OsmTransferCanceledException("Operation canceled");
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[1169] | 192 |
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[9309] | 193 | final HttpClient.Response response;
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[1875] | 194 | try {
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[9309] | 195 | response = client.connect(progressMonitor);
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[14216] | 196 | contentType = response.getContentType();
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[10212] | 197 | } catch (IOException e) {
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[12620] | 198 | Logging.error(e);
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[8509] | 199 | OsmTransferException ote = new OsmTransferException(
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| 200 | tr("Could not connect to the OSM server. Please check your internet connection."), e);
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[5575] | 201 | ote.setUrl(url.toString());
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| 202 | throw ote;
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[1875] | 203 | }
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| 204 | try {
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[12992] | 205 | if (response.getResponseCode() == HttpURLConnection.HTTP_UNAUTHORIZED) {
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| 206 | CredentialsManager.getInstance().purgeCredentialsCache(RequestorType.SERVER);
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[8510] | 207 | throw new OsmApiException(HttpURLConnection.HTTP_UNAUTHORIZED, null, null);
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[12992] | 208 | }
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[1353] | 209 |
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[9309] | 210 | if (response.getResponseCode() == HttpURLConnection.HTTP_PROXY_AUTH)
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[8415] | 211 | throw new OsmTransferCanceledException("Proxy Authentication Required");
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[2641] | 212 |
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[9309] | 213 | if (response.getResponseCode() != HttpURLConnection.HTTP_OK) {
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| 214 | String errorHeader = response.getHeaderField("Error");
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[10420] | 215 | String errorBody = fetchResponseText(response);
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[13499] | 216 | throw new OsmApiException(response.getResponseCode(), errorHeader, errorBody, url.toString(), null,
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[14216] | 217 | contentType);
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[1670] | 218 | }
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[1169] | 219 |
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[9309] | 220 | response.uncompressAccordingToContentDisposition(uncompressAccordingToContentDisposition);
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| 221 | return response.getContent();
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[6246] | 222 | } catch (OsmTransferException e) {
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| 223 | throw e;
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[10212] | 224 | } catch (IOException e) {
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[6246] | 225 | throw new OsmTransferException(e);
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[1670] | 226 | }
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[1875] | 227 | } finally {
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| 228 | progressMonitor.invalidate();
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[1169] | 229 | }
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| 230 | }
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| 231 |
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[10420] | 232 | private static String fetchResponseText(final HttpClient.Response response) {
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| 233 | try {
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| 234 | return response.fetchContent();
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| 235 | } catch (IOException e) {
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[12620] | 236 | Logging.error(e);
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[10420] | 237 | return tr("Reading error text failed.");
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| 238 | }
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| 239 | }
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| 240 |
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[6244] | 241 | /**
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[9308] | 242 | * Allows subclasses to modify the request.
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| 243 | * @param request the prepared request
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| 244 | * @since 9308
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| 245 | */
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| 246 | protected void adaptRequest(HttpClient request) {
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| 247 | }
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| 248 |
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| 249 | /**
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[6244] | 250 | * Download OSM files from somewhere
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| 251 | * @param progressMonitor The progress monitor
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| 252 | * @return The corresponding dataset
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[6643] | 253 | * @throws OsmTransferException if any error occurs
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[6244] | 254 | */
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[11023] | 255 | public abstract DataSet parseOsm(ProgressMonitor progressMonitor) throws OsmTransferException;
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[1169] | 256 |
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[6244] | 257 | /**
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[13352] | 258 | * Download compressed OSM files from somewhere
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[6244] | 259 | * @param progressMonitor The progress monitor
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[13352] | 260 | * @param compression compression to use
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[6244] | 261 | * @return The corresponding dataset
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[6643] | 262 | * @throws OsmTransferException if any error occurs
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[13352] | 263 | * @since 13352
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[6244] | 264 | */
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[13352] | 265 | public DataSet parseOsm(ProgressMonitor progressMonitor, Compression compression) throws OsmTransferException {
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[15784] | 266 | throw new UnsupportedOperationException();
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[4530] | 267 | }
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[5361] | 268 |
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[6244] | 269 | /**
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[13352] | 270 | * Download OSM Change uncompressed files from somewhere
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[6244] | 271 | * @param progressMonitor The progress monitor
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| 272 | * @return The corresponding dataset
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[6643] | 273 | * @throws OsmTransferException if any error occurs
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[6244] | 274 | */
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[13352] | 275 | public DataSet parseOsmChange(ProgressMonitor progressMonitor) throws OsmTransferException {
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[5361] | 276 | return null;
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| 277 | }
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| 278 |
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[6244] | 279 | /**
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[13352] | 280 | * Download OSM Change compressed files from somewhere
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[6244] | 281 | * @param progressMonitor The progress monitor
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[13352] | 282 | * @param compression compression to use
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[6244] | 283 | * @return The corresponding dataset
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[6643] | 284 | * @throws OsmTransferException if any error occurs
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[13352] | 285 | * @since 13352
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[6244] | 286 | */
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[13352] | 287 | public DataSet parseOsmChange(ProgressMonitor progressMonitor, Compression compression) throws OsmTransferException {
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[15784] | 288 | throw new UnsupportedOperationException();
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[5361] | 289 | }
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| 290 |
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[6244] | 291 | /**
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| 292 | * Retrieve raw gps waypoints from the server API.
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| 293 | * @param progressMonitor The progress monitor
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| 294 | * @return The corresponding GPX tracks
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| 295 | * @throws OsmTransferException if any error occurs
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| 296 | */
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[13352] | 297 | public GpxData parseRawGps(ProgressMonitor progressMonitor) throws OsmTransferException {
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[4521] | 298 | return null;
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| 299 | }
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[5317] | 300 |
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[6244] | 301 | /**
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[13352] | 302 | * Retrieve compressed GPX files from somewhere.
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| 303 | * @param progressMonitor The progress monitor
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| 304 | * @param compression compression to use
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| 305 | * @return The corresponding GPX tracks
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| 306 | * @throws OsmTransferException if any error occurs
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| 307 | * @since 13352
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| 308 | */
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| 309 | public GpxData parseRawGps(ProgressMonitor progressMonitor, Compression compression) throws OsmTransferException {
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[15784] | 310 | throw new UnsupportedOperationException();
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[13352] | 311 | }
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| 312 |
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| 313 | /**
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[2124] | 314 | * Returns true if this reader is adding authentication credentials to the read
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| 315 | * request sent to the server.
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[2512] | 316 | *
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[2124] | 317 | * @return true if this reader is adding authentication credentials to the read
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| 318 | * request sent to the server
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| 319 | */
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| 320 | public boolean isDoAuthenticate() {
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| 321 | return doAuthenticate;
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| 322 | }
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| 323 |
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| 324 | /**
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| 325 | * Sets whether this reader adds authentication credentials to the read
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| 326 | * request sent to the server.
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[2512] | 327 | *
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[2124] | 328 | * @param doAuthenticate true if this reader adds authentication credentials to the read
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| 329 | * request sent to the server
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| 330 | */
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| 331 | public void setDoAuthenticate(boolean doAuthenticate) {
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| 332 | this.doAuthenticate = doAuthenticate;
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| 333 | }
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[6070] | 334 |
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[5494] | 335 | /**
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| 336 | * Determines if the GPX data has been parsed properly.
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| 337 | * @return true if the GPX data has been parsed properly, false otherwise
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| 338 | * @see GpxReader#parse
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| 339 | */
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| 340 | public final boolean isGpxParsedProperly() {
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| 341 | return gpxParsedProperly;
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| 342 | }
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[7531] | 343 |
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| 344 | /**
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| 345 | * Downloads notes from the API, given API limit parameters
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| 346 | *
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[8218] | 347 | * @param noteLimit How many notes to download.
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[7531] | 348 | * @param daysClosed Return notes closed this many days in the past. -1 means all notes, ever. 0 means only unresolved notes.
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| 349 | * @param progressMonitor Progress monitor for user feedback
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| 350 | * @return List of notes returned by the API
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| 351 | * @throws OsmTransferException if any errors happen
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| 352 | */
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[8218] | 353 | public List<Note> parseNotes(int noteLimit, int daysClosed, ProgressMonitor progressMonitor) throws OsmTransferException {
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[7531] | 354 | return null;
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| 355 | }
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| 356 |
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| 357 | /**
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| 358 | * Downloads notes from a given raw URL. The URL is assumed to be complete and no API limits are added
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| 359 | *
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[8470] | 360 | * @param progressMonitor progress monitor
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[7531] | 361 | * @return A list of notes parsed from the URL
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[8470] | 362 | * @throws OsmTransferException if any error occurs during dialog with OSM API
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[7531] | 363 | */
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| 364 | public List<Note> parseRawNotes(final ProgressMonitor progressMonitor) throws OsmTransferException {
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| 365 | return null;
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| 366 | }
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| 367 |
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| 368 | /**
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[13352] | 369 | * Download notes from a URL that contains a compressed notes dump file
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| 370 | * @param progressMonitor progress monitor
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| 371 | * @param compression compression to use
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| 372 | * @return A list of notes parsed from the URL
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| 373 | * @throws OsmTransferException if any error occurs during dialog with OSM API
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| 374 | * @since 13352
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| 375 | */
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| 376 | public List<Note> parseRawNotes(ProgressMonitor progressMonitor, Compression compression) throws OsmTransferException {
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[15784] | 377 | throw new UnsupportedOperationException();
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[13352] | 378 | }
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| 379 |
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| 380 | /**
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[12510] | 381 | * Returns an attribute from the given DOM node.
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| 382 | * @param node DOM node
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| 383 | * @param name attribute name
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| 384 | * @return attribute value for the given attribute
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| 385 | * @since 12510
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| 386 | */
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| 387 | protected static String getAttribute(Node node, String name) {
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| 388 | return node.getAttributes().getNamedItem(name).getNodeValue();
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| 389 | }
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| 390 |
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| 391 | /**
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| 392 | * DOM document parser.
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| 393 | * @param <R> resulting type
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| 394 | * @since 12510
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| 395 | */
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| 396 | @FunctionalInterface
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| 397 | protected interface DomParser<R> {
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| 398 | /**
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| 399 | * Parses a given DOM document.
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| 400 | * @param doc DOM document
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| 401 | * @return parsed data
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| 402 | * @throws XmlParsingException if an XML parsing error occurs
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| 403 | */
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| 404 | R parse(Document doc) throws XmlParsingException;
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| 405 | }
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| 406 |
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| 407 | /**
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| 408 | * Fetches generic data from the DOM document resulting an API call.
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| 409 | * @param api the OSM API call
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| 410 | * @param subtask the subtask translated message
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| 411 | * @param parser the parser converting the DOM document (OSM API result)
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| 412 | * @param <T> data type
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| 413 | * @param monitor The progress monitor
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| 414 | * @param reason The reason to show on console. Can be {@code null} if no reason is given
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| 415 | * @return The converted data
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| 416 | * @throws OsmTransferException if something goes wrong
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| 417 | * @since 12510
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| 418 | */
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| 419 | public <T> T fetchData(String api, String subtask, DomParser<T> parser, ProgressMonitor monitor, String reason)
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| 420 | throws OsmTransferException {
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| 421 | try {
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| 422 | monitor.beginTask("");
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| 423 | monitor.indeterminateSubTask(subtask);
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| 424 | try (InputStream in = getInputStream(api, monitor.createSubTaskMonitor(1, true), reason)) {
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[13901] | 425 | return parser.parse(XmlUtils.parseSafeDOM(in));
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[12510] | 426 | }
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| 427 | } catch (OsmTransferException e) {
|
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| 428 | throw e;
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| 429 | } catch (IOException | ParserConfigurationException | SAXException e) {
|
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| 430 | throw new OsmTransferException(e);
|
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| 431 | } finally {
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| 432 | monitor.finishTask();
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| 433 | }
|
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| 434 | }
|
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[18] | 435 | }
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