/*
This file is part of RouteConverter.
RouteConverter is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 2 of the License, or
(at your option) any later version.
RouteConverter is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with RouteConverter; if not, write to the Free Software
Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
Copyright (C) 2007 Christian Pesch. All Rights Reserved.
*/
package slash.navigation.url;
import slash.navigation.base.BaseUrlParsingFormat;
import slash.navigation.base.ParserContext;
import slash.navigation.base.Wgs84Position;
import slash.navigation.base.Wgs84Route;
import java.io.PrintWriter;
import java.net.URL;
import java.util.ArrayList;
import java.util.List;
import java.util.Map;
import java.util.StringTokenizer;
import java.util.logging.Logger;
import java.util.prefs.Preferences;
import java.util.regex.Matcher;
import java.util.regex.Pattern;
import static java.lang.Math.max;
import static slash.common.io.Transfer.*;
import static slash.navigation.base.RouteCalculations.asWgs84Position;
import static slash.navigation.base.RouteCharacteristics.Route;
/**
* Reads and writes Google Maps URLs from/to files.
*
* @author Christian Pesch
*/
public class GoogleMapsUrlFormat extends BaseUrlParsingFormat {
private static final Logger log = Logger.getLogger(GoogleMapsUrlFormat.class.getName());
private static final Preferences preferences = Preferences.userNodeForPackage(GoogleMapsUrlFormat.class);
private static final Pattern URL_PATTERN = Pattern.compile(".*http[s]?://.+\\.google\\..+/maps([^\\s]+).*");
private static final Pattern BOOKMARK_PATTERN = Pattern.compile(".*InternetShortcut(.+)IconFile.*");
private static final Pattern PLAIN_POSITION_PATTERN = Pattern.compile("(\\s*[-|\\d|\\.]+\\s*),(\\s*[-|\\d|\\.]+\\s*)");
private static final Pattern COMMENT_POSITION_PATTERN = Pattern.
compile("(" + WHITE_SPACE + ".*?" + WHITE_SPACE + ")" +
"(@?(" + WHITE_SPACE + "[-|\\d|\\.]+" + WHITE_SPACE + ")," +
"(" + WHITE_SPACE + "[-|\\d|\\.]+" + WHITE_SPACE + "))?");
private static final String DESTINATION_SEPARATOR = "to:";
public String getExtension() {
return ".url";
}
public String getName() {
return "Google Maps URL (*" + getExtension() + ")";
}
public int getMaximumPositionCount() {
return preferences.getInt("maximumGoogleMapsUrlPositionCount", 15);
}
public static boolean isGoogleMapsLinkUrl(URL url) {
String found = internalFindUrl(url.toExternalForm());
return found != null && (found.startsWith("?") || found.startsWith("/dir/"));
}
public static boolean isGoogleMapsProfileUrl(URL url) {
String found = internalFindUrl(url.toExternalForm());
return found != null && found.startsWith("/ms?");
}
private static String internalFindUrl(String text) {
text = replaceLineFeeds(text, "&");
Matcher bookmarkMatcher = BOOKMARK_PATTERN.matcher(text);
if (bookmarkMatcher.matches())
text = bookmarkMatcher.group(1);
Matcher urlMatcher = URL_PATTERN.matcher(text);
if (!urlMatcher.matches())
return null;
return trim(urlMatcher.group(1));
}
protected void processURL(String url, String encoding, ParserContext<Wgs84Route> context) {
if (url.startsWith("/dir/")) {
List<Wgs84Position> positions = parsePositions(url.substring(5));
if (positions.size() > 0)
context.appendRoute(createRoute(Route, null, positions));
} else
super.processURL(url, encoding, context);
}
List<Wgs84Position> parsePositions(String url) {
List<Wgs84Position> result = new ArrayList<>();
String[] segments = url.split("/");
for (String segment : segments) {
if (segment.startsWith("@") || segment.startsWith("data"))
break;
result.add(asWgs84Position(null, null, decodeUri(segment)));
}
return result;
}
protected String findURL(String text) {
return internalFindUrl(text);
}
Wgs84Position parsePlainPosition(String coordinates) {
Matcher matcher = PLAIN_POSITION_PATTERN.matcher(coordinates);
if (!matcher.matches())
throw new IllegalArgumentException("'" + coordinates + "' does not match");
Double latitude = parseDouble(matcher.group(1));
Double longitude = parseDouble(matcher.group(2));
return asWgs84Position(longitude, latitude);
}
Wgs84Position parseCommentPosition(String position) {
Matcher matcher = COMMENT_POSITION_PATTERN.matcher(position);
if (!matcher.matches())
throw new IllegalArgumentException("'" + position + "' does not match");
String comment = trim(matcher.group(1));
Double latitude = parseDouble(matcher.group(3));
Double longitude = parseDouble(matcher.group(4));
return asWgs84Position(longitude, latitude, comment);
}
List<Wgs84Position> parseDestinationPositions(String destinationComments) {
List<Wgs84Position> result = new ArrayList<>();
int startIndex = 0;
while (startIndex < destinationComments.length()) {
int endIndex = destinationComments.indexOf(DESTINATION_SEPARATOR, startIndex);
if (endIndex == -1)
endIndex = destinationComments.length();
String position = destinationComments.substring(startIndex, endIndex);
result.add(parseCommentPosition(position));
startIndex = endIndex + 3 /* DESTINATION_SEPARATOR */;
}
return result;
}
List<Wgs84Position> extractGeocodePositions(List<Wgs84Position> positions) {
List<Wgs84Position> result = new ArrayList<>(positions);
for (int i = result.size() - 1; i >= 0; i--) {
Wgs84Position position = result.get(i);
if (trim(position.getDescription()) == null)
result.remove(i);
}
return result;
}
protected List<Wgs84Position> parsePositions(Map<String, List<String>> parameters) {
List<Wgs84Position> result = new ArrayList<>();
if (parameters == null)
return result;
// ignore ll and sll parameters as they contain positions far off the route
List<String> startPositions = parameters.get("saddr");
if (startPositions != null) {
for (String startComment : startPositions) {
result.add(parseCommentPosition(startComment));
}
}
List<String> destinationPositions = parameters.get("daddr");
if(destinationPositions != null) {
for (String destinationPosition : destinationPositions) {
result.addAll(parseDestinationPositions(destinationPosition));
}
List<String> geocode = parameters.get("geocode");
if(geocode != null && geocode.size() > 0 && result.size() > 0) {
List<Wgs84Position> geocodePositions = extractGeocodePositions(result);
StringTokenizer tokenizer = new StringTokenizer(geocode.get(0), ",;");
int positionIndex = 0;
while(tokenizer.hasMoreTokens() && positionIndex < geocodePositions.size()) {
tokenizer.nextToken();
if (tokenizer.hasMoreTokens()) {
try {
Double latitude = parseDouble(tokenizer.nextToken());
if (tokenizer.hasMoreTokens()) {
Double longitude = parseDouble(tokenizer.nextToken());
Wgs84Position position = geocodePositions.get(positionIndex++);
position.setLongitude(longitude);
position.setLatitude(latitude);
}
}
catch (NumberFormatException e) {
log.warning("Cannot parse tokens from " + geocode.get(0));
}
}
}
}
}
return result;
}
String createURL(List<Wgs84Position> positions, int startIndex, int endIndex) {
StringBuilder buffer = new StringBuilder("http://maps.google.com/maps?ie=UTF8&");
for (int i = startIndex; i < endIndex; i++) {
Wgs84Position position = positions.get(i);
String longitude = position.getLongitude() != null ? formatDoubleAsString(position.getLongitude(), 6) : null;
String latitude = position.getLatitude() != null ? formatDoubleAsString(position.getLatitude(), 6) : null;
String comment = encodeDescription(trim(position.getDescription()));
if (i == startIndex) {
buffer.append("saddr=").append(comment);
if(longitude != null && latitude != null)
buffer.append("%40").append(latitude).append(",").append(longitude);
if (endIndex > startIndex + 1)
buffer.append("&daddr=");
} else {
if (i > startIndex + 1 && i < endIndex)
buffer.append("+").append(DESTINATION_SEPARATOR);
buffer.append(comment);
if(longitude != null && latitude != null)
buffer.append("%40").append(latitude).append(",").append(longitude);
}
}
return buffer.toString();
}
public void write(Wgs84Route route, PrintWriter writer, int startIndex, int endIndex) {
List<Wgs84Position> positions = route.getPositions();
writer.println("[InternetShortcut]");
// idea from forum: add start point from previous route section since your not at the
// last position of the previous segment heading for the first position of the next segment
startIndex = max(startIndex - 1, 0);
writer.println("URL=" + createURL(positions, startIndex, endIndex));
writer.println();
}
}