// License: GPL. For details, see LICENSE file.
package org.openstreetmap.josm.tools;
import static org.openstreetmap.josm.tools.I18n.tr;
import java.io.IOException;
import java.io.InputStream;
import java.util.ArrayList;
import java.util.Collection;
import java.util.Collections;
import java.util.HashMap;
import java.util.Map;
import java.util.Set;
import org.openstreetmap.josm.Main;
import org.openstreetmap.josm.data.coor.LatLon;
import org.openstreetmap.josm.data.osm.DataSet;
import org.openstreetmap.josm.data.osm.OsmPrimitive;
import org.openstreetmap.josm.data.osm.Relation;
import org.openstreetmap.josm.data.osm.Way;
import org.openstreetmap.josm.io.CachedFile;
import org.openstreetmap.josm.io.IllegalDataException;
import org.openstreetmap.josm.io.OsmReader;
/**
* Look up territories ISO3166 codes at a certain place.
*/
public final class Territories {
private static final String ISO3166_1 = "ISO3166-1:alpha2";
private static final String ISO3166_2 = "ISO3166-2";
private static DataSet dataSet;
private static volatile Map<String, GeoPropertyIndex<Boolean>> iso3166Cache;
private Territories() {
// Hide implicit public constructor for utility classes
}
/**
* Get all known ISO3166-1 and ISO3166-2 codes.
*
* @return the ISO3166-1 and ISO3166-2 codes for the given location
*/
public static synchronized Set<String> getKnownIso3166Codes() {
return iso3166Cache.keySet();
}
/**
* Determine, if a point is inside a territory with the given the ISO3166-1
* or ISO3166-2 code.
*
* @param code the ISO3166-1 or ISO3166-2 code
* @param ll the coordinates of the point
* @return true, if the point is inside a territory with the given code
*/
public static synchronized boolean isIso3166Code(String code, LatLon ll) {
GeoPropertyIndex<Boolean> gpi = iso3166Cache.get(code);
if (gpi == null) {
Main.warn(tr("Unknown territory id: {0}", code));
return false;
}
return gpi.get(ll);
}
/**
* Returns the territories dataset.
* @return the territories dataset
*/
public static synchronized DataSet getDataSet() {
return new DataSet(dataSet);
}
/**
* Initializes territories.
* TODO: Synchronization can be refined inside the {@link GeoPropertyIndex} as most look-ups are read-only.
*/
public static synchronized void initialize() {
iso3166Cache = new HashMap<>();
try (CachedFile cf = new CachedFile("resource://data/boundaries.osm");
InputStream is = cf.getInputStream()) {
dataSet = OsmReader.parseDataSet(is, null);
Collection<OsmPrimitive> candidates = new ArrayList<>(dataSet.getWays());
candidates.addAll(dataSet.getRelations());
for (OsmPrimitive osm : candidates) {
String iso1 = osm.get(ISO3166_1);
String iso2 = osm.get(ISO3166_2);
if (iso1 != null || iso2 != null) {
GeoProperty<Boolean> gp;
if (osm instanceof Way) {
gp = new DefaultGeoProperty(Collections.singleton((Way) osm));
} else {
gp = new DefaultGeoProperty((Relation) osm);
}
GeoPropertyIndex<Boolean> gpi = new GeoPropertyIndex<>(gp, 24);
if (iso1 != null) {
iso3166Cache.put(iso1, gpi);
}
if (iso2 != null) {
iso3166Cache.put(iso2, gpi);
}
}
}
} catch (IOException | IllegalDataException ex) {
throw new JosmRuntimeException(ex);
}
}
}