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package cgeo.geocaching.files;
import cgeo.geocaching.SearchResult;
import cgeo.geocaching.cgCache;
import cgeo.geocaching.cgData;
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 org.apache.commons.lang3.StringUtils;
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.Matcher;
import java.util.regex.Pattern;
public final class LocParser extends FileParser {
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=\"([^\"]+)\"");
// premium only >>
private static final Pattern patternDifficulty = Pattern
.compile("<difficulty>([^<]+)</difficulty>");
private static final Pattern patternTerrain = Pattern
.compile("<terrain>([^<]+)</terrain>");
private static final Pattern patternContainer = Pattern
.compile("<container>([^<]+)</container>");
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, cgCache> cidCoords = parseCoordinates(fileContent);
// save found cache coordinates
final HashSet<String> contained = new HashSet<String>();
for (String geocode : searchResult.getGeocodes()) {
if (cidCoords.containsKey(geocode)) {
contained.add(geocode);
}
}
Set<cgCache> caches = cgData.loadCaches(contained, LoadFlags.LOAD_CACHE_OR_DB);
for (cgCache cache : caches) {
cgCache coord = cidCoords.get(cache.getGeocode());
copyCoordToCache(coord, cache);
}
}
private static void copyCoordToCache(final cgCache coord, final cgCache 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());
}
}
static Map<String, cgCache> parseCoordinates(final String fileContent) {
final Map<String, cgCache> coords = new HashMap<String, cgCache>();
if (StringUtils.isBlank(fileContent)) {
return coords;
}
// >> premium only
final String[] points = fileContent.split("<waypoint>");
// parse coordinates
for (String pointString : points) {
final cgCache 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");
}
// 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<cgCache> parse(InputStream stream, CancellableHandler progressHandler) throws IOException, ParserException {
// TODO: progress reporting happens during reading stream only, not during parsing
String streamContent = readStream(stream, progressHandler).toString();
final Map<String, cgCache> coords = parseCoordinates(streamContent);
final List<cgCache> caches = new ArrayList<cgCache>();
for (Entry<String, cgCache> entry : coords.entrySet()) {
cgCache coord = entry.getValue();
if (StringUtils.isBlank(coord.getGeocode()) || StringUtils.isBlank(coord.getName())) {
continue;
}
cgCache cache = new cgCache();
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);
}
Log.i("Caches found in .loc file: " + caches.size());
return caches;
}
public static cgCache parseCache(final String pointString) {
final cgCache cache = new cgCache();
final Matcher matcherGeocode = patternGeocode.matcher(pointString);
if (matcherGeocode.find()) {
cache.setGeocode(matcherGeocode.group(1).trim());
}
final Matcher matcherName = patternName.matcher(pointString);
if (matcherName.find()) {
final String name = matcherName.group(1).trim();
cache.setName(StringUtils.substringBeforeLast(name, " by ").trim());
} else {
cache.setName(cache.getGeocode());
}
final Matcher matcherLat = patternLat.matcher(pointString);
final Matcher matcherLon = patternLon.matcher(pointString);
if (matcherLat.find() && matcherLon.find()) {
cache.setCoords(parsePoint(matcherLat.group(1).trim(), matcherLon.group(1).trim()));
}
final Matcher matcherDifficulty = patternDifficulty.matcher(pointString);
if (matcherDifficulty.find()) {
cache.setDifficulty(Float.parseFloat(matcherDifficulty.group(1).trim()));
}
final Matcher matcherTerrain = patternTerrain.matcher(pointString);
if (matcherTerrain.find()) {
cache.setTerrain(Float.parseFloat(matcherTerrain.group(1).trim()));
}
final Matcher matcherContainer = patternContainer.matcher(pointString);
if (matcherContainer.find()) {
final int size = Integer.parseInt(matcherContainer.group(1).trim());
if (size >= 1 && size <= 8) {
cache.setSize(SIZES[size - 1]);
}
}
return cache;
}
}
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