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package cgeo.geocaching.files;
import cgeo.geocaching.DataStore;
import cgeo.geocaching.Geocache;
import cgeo.geocaching.SearchResult;
import cgeo.geocaching.enumerations.CacheSize;
import cgeo.geocaching.enumerations.CacheType;
import cgeo.geocaching.enumerations.LoadFlags;
import cgeo.geocaching.geopoint.Geopoint;
import cgeo.geocaching.utils.CancellableHandler;
import cgeo.geocaching.utils.Log;
import cgeo.geocaching.utils.MatcherWrapper;
import org.apache.commons.lang3.StringUtils;
import org.eclipse.jdt.annotation.NonNull;
import org.eclipse.jdt.annotation.Nullable;
import java.io.IOException;
import java.io.InputStream;
import java.util.ArrayList;
import java.util.Collection;
import java.util.HashMap;
import java.util.HashSet;
import java.util.List;
import java.util.Map;
import java.util.Map.Entry;
import java.util.Set;
import java.util.regex.Pattern;
public final class LocParser extends FileParser {
private static final String NAME_OWNER_SEPARATOR = " by ";
private static final Pattern patternGeocode = Pattern
.compile("name id=\"([^\"]+)\"");
private static final Pattern patternLat = Pattern
.compile("lat=\"([^\"]+)\"");
private static final Pattern patternLon = Pattern
.compile("lon=\"([^\"]+)\"");
private static final Pattern patternName = Pattern.compile("CDATA\\[([^\\]]+)\\]");
private static final CacheSize[] SIZES = {
CacheSize.NOT_CHOSEN, // 1
CacheSize.MICRO, // 2
CacheSize.REGULAR, // 3
CacheSize.LARGE, // 4
CacheSize.VIRTUAL, // 5
CacheSize.OTHER, // 6
CacheSize.UNKNOWN, // 7
CacheSize.SMALL, // 8
};
private int listId;
public static void parseLoc(final SearchResult searchResult, final String fileContent) {
final Map<String, Geocache> cidCoords = parseCoordinates(fileContent);
// save found cache coordinates
final HashSet<String> contained = new HashSet<>();
for (String geocode : searchResult.getGeocodes()) {
if (cidCoords.containsKey(geocode)) {
contained.add(geocode);
}
}
Set<Geocache> caches = DataStore.loadCaches(contained, LoadFlags.LOAD_CACHE_OR_DB);
for (Geocache cache : caches) {
Geocache coord = cidCoords.get(cache.getGeocode());
copyCoordToCache(coord, cache);
}
}
private static void copyCoordToCache(final Geocache coord, final Geocache cache) {
cache.setCoords(coord.getCoords());
cache.setDifficulty(coord.getDifficulty());
cache.setTerrain(coord.getTerrain());
cache.setSize(coord.getSize());
cache.setGeocode(coord.getGeocode());
cache.setReliableLatLon(true);
if (StringUtils.isBlank(cache.getName())) {
cache.setName(coord.getName());
}
cache.setOwnerUserId(coord.getOwnerUserId());
}
static Map<String, Geocache> parseCoordinates(final String fileContent) {
final Map<String, Geocache> coords = new HashMap<>();
if (StringUtils.isBlank(fileContent)) {
return coords;
}
// >> premium only
final String[] points = fileContent.split("<waypoint>");
// parse coordinates
for (String pointString : points) {
final Geocache pointCoord = parseCache(pointString);
if (StringUtils.isNotBlank(pointCoord.getGeocode())) {
coords.put(pointCoord.getGeocode(), pointCoord);
}
}
Log.i("Coordinates found in .loc file: " + coords.size());
return coords;
}
public static Geopoint parsePoint(final String latitude, final String longitude) {
// the loc file contains the coordinates as plain floating point values, therefore avoid using the GeopointParser
try {
return new Geopoint(Double.valueOf(latitude), Double.valueOf(longitude));
} catch (NumberFormatException e) {
Log.e("LOC format has changed", e);
}
// fall back to parser, just in case the format changes
return new Geopoint(latitude, longitude);
}
public LocParser(int listId) {
this.listId = listId;
}
@Override
public Collection<Geocache> parse(@NonNull final InputStream stream, @Nullable final CancellableHandler progressHandler) throws IOException, ParserException {
final String streamContent = readStream(stream, null).toString();
final int maxSize = streamContent.length();
final Map<String, Geocache> coords = parseCoordinates(streamContent);
final List<Geocache> caches = new ArrayList<>();
for (Entry<String, Geocache> entry : coords.entrySet()) {
Geocache coord = entry.getValue();
if (StringUtils.isBlank(coord.getGeocode()) || StringUtils.isBlank(coord.getName())) {
continue;
}
Geocache cache = new Geocache();
cache.setReliableLatLon(true);
copyCoordToCache(coord, cache);
caches.add(cache);
fixCache(cache);
cache.setType(CacheType.UNKNOWN); // type is not given in the LOC file
cache.setListId(listId);
cache.setDetailed(true);
cache.store(null);
if (progressHandler != null) {
progressHandler.sendMessage(progressHandler.obtainMessage(0, maxSize * caches.size() / coords.size(), 0));
}
}
Log.i("Caches found in .loc file: " + caches.size());
return caches;
}
public static Geocache parseCache(final String pointString) {
final Geocache cache = new Geocache();
final MatcherWrapper matcherGeocode = new MatcherWrapper(patternGeocode, pointString);
if (matcherGeocode.find()) {
cache.setGeocode(matcherGeocode.group(1).trim());
}
final MatcherWrapper matcherName = new MatcherWrapper(patternName, pointString);
if (matcherName.find()) {
final String name = matcherName.group(1).trim();
String ownerName = StringUtils.trim(StringUtils.substringAfterLast(name, NAME_OWNER_SEPARATOR));
if (StringUtils.isEmpty(cache.getOwnerUserId()) && StringUtils.isNotEmpty(ownerName)) {
cache.setOwnerUserId(ownerName);
}
cache.setName(StringUtils.substringBeforeLast(name, NAME_OWNER_SEPARATOR).trim());
} else {
cache.setName(cache.getGeocode());
}
final MatcherWrapper matcherLat = new MatcherWrapper(patternLat, pointString);
final MatcherWrapper matcherLon = new MatcherWrapper(patternLon, pointString);
if (matcherLat.find() && matcherLon.find()) {
cache.setCoords(parsePoint(matcherLat.group(1).trim(), matcherLon.group(1).trim()));
}
final String difficulty = StringUtils.substringBetween(pointString, "<difficulty>", "</difficulty>");
final String terrain = StringUtils.substringBetween(pointString, "<terrain>", "</terrain>");
final String container = StringUtils.substringBetween(pointString, "<container>", "</container");
try {
if (StringUtils.isNotBlank(difficulty)) {
cache.setDifficulty(Float.parseFloat(difficulty.trim()));
}
if (StringUtils.isNotBlank(terrain)) {
cache.setTerrain(Float.parseFloat(terrain.trim()));
}
if (StringUtils.isNotBlank(container)) {
final int size = Integer.parseInt(container.trim());
if (size >= 1 && size <= 8) {
cache.setSize(SIZES[size - 1]);
}
}
} catch (NumberFormatException e) {
Log.e("LocParser.parseCache", e);
}
return cache;
}
}
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