mirror of
https://gitlab.com/oeffi/public-transport-enabler.git
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f5a7ca06dd
git-svn-id: https://public-transport-enabler.googlecode.com/svn/trunk@631 0924bc21-9374-b0fa-ee44-9ff1593b38f0
289 lines
10 KiB
Java
289 lines
10 KiB
Java
/*
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* Copyright 2010, 2011 the original author or authors.
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*
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* This program is free software: you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation, either version 3 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program. If not, see <http://www.gnu.org/licenses/>.
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*/
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package de.schildbach.pte;
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import java.io.IOException;
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import java.util.ArrayList;
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import java.util.Calendar;
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import java.util.Collections;
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import java.util.GregorianCalendar;
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import java.util.List;
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import java.util.regex.Matcher;
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import java.util.regex.Pattern;
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import de.schildbach.pte.dto.Departure;
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import de.schildbach.pte.dto.Location;
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import de.schildbach.pte.dto.LocationType;
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import de.schildbach.pte.dto.NearbyStationsResult;
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import de.schildbach.pte.dto.QueryDeparturesResult;
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import de.schildbach.pte.dto.QueryDeparturesResult.Status;
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import de.schildbach.pte.dto.StationDepartures;
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import de.schildbach.pte.util.ParserUtils;
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/**
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* @author Andreas Schildbach
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*/
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public class VgsProvider extends AbstractHafasProvider
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{
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public static final String OLD_NETWORK_ID = "www.vgs-online.de";
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private static final String API_BASE = "http://www.vgs-online.de/cgi-bin/"; // "http://www.saarfahrplan.de/cgi-bin/";
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private static final long PARSER_DAY_ROLLOVER_THRESHOLD_MS = 12 * 60 * 60 * 1000;
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public VgsProvider()
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{
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super(API_BASE + "query.exe/dn", 11, null);
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}
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public NetworkId id()
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{
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return NetworkId.VGS;
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}
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public boolean hasCapabilities(final Capability... capabilities)
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{
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for (final Capability capability : capabilities)
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if (capability == Capability.AUTOCOMPLETE_ONE_LINE || capability == Capability.DEPARTURES || capability == Capability.CONNECTIONS)
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return true;
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return false;
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}
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private static final String AUTOCOMPLETE_URI = API_BASE
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+ "ajax-getstop.exe/eny?start=1&tpl=suggest2json&REQ0JourneyStopsS0A=1&getstop=1&noSession=yes&REQ0JourneyStopsB=12&REQ0JourneyStopsS0G=%s?&js=true&";
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private static final String ENCODING = "ISO-8859-1";
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public List<Location> autocompleteStations(final CharSequence constraint) throws IOException
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{
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final String uri = String.format(AUTOCOMPLETE_URI, ParserUtils.urlEncode(constraint.toString(), ENCODING));
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return jsonGetStops(uri);
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}
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public NearbyStationsResult queryNearbyStations(final Location location, final int maxDistance, final int maxStations) throws IOException
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{
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final StringBuilder uri = new StringBuilder(API_BASE);
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if (location.hasLocation())
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{
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uri.append("query.exe/dny");
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uri.append("?performLocating=2&tpl=stop2json");
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uri.append("&look_maxno=").append(maxStations != 0 ? maxStations : 200);
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uri.append("&look_maxdist=").append(maxDistance != 0 ? maxDistance : 5000);
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uri.append("&look_stopclass=").append(allProductsInt());
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uri.append("&look_x=").append(location.lon);
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uri.append("&look_y=").append(location.lat);
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return jsonNearbyStations(uri.toString());
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}
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else if (location.type == LocationType.STATION && location.hasId())
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{
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uri.append("stboard.exe/dn?near=Anzeigen");
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uri.append("&distance=").append(maxDistance != 0 ? maxDistance / 1000 : 50);
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uri.append("&input=").append(location.id);
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return htmlNearbyStations(uri.toString());
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}
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else
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{
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throw new IllegalArgumentException("cannot handle: " + location.toDebugString());
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}
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}
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private String departuresQueryUri(final int stationId, final int maxDepartures)
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{
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final StringBuilder uri = new StringBuilder();
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uri.append(API_BASE).append("stboard.exe/dn");
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uri.append("?input=").append(stationId);
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uri.append("&boardType=dep");
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uri.append("&productsFilter=").append(allProductsString());
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if (maxDepartures != 0)
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uri.append("&maxJourneys=").append(maxDepartures);
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uri.append("&disableEquivs=yes"); // don't use nearby stations
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uri.append("&start=yes");
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return uri.toString();
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}
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private static final Pattern P_DEPARTURES_HEAD_COARSE = Pattern
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.compile(
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".*?" //
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+ "(?:" //
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+ "<table class=\"hafasResult\"[^>]*>(.+?)</table>.*?" //
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+ "(?:<table cellspacing=\"0\" class=\"hafasResult\"[^>]*>(.+?)</table>|(verkehren an dieser Haltestelle keine))"//
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+ "|(Eingabe kann nicht interpretiert)|(Verbindung zum Server konnte leider nicht hergestellt werden|kann vom Server derzeit leider nicht bearbeitet werden))" //
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+ ".*?" //
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, Pattern.DOTALL);
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private static final Pattern P_DEPARTURES_HEAD_FINE = Pattern.compile(".*?" //
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+ "<td class=\"querysummary screennowrap\">\\s*(.*?)\\s*<.*?" // location
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+ "(\\d{2}\\.\\d{2}\\.\\d{2}).*?" // date
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+ "Abfahrt (\\d{1,2}:\\d{2}).*?" // time
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, Pattern.DOTALL);
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private static final Pattern P_DEPARTURES_COARSE = Pattern.compile("<tr class=\"(depboard-\\w*)\">(.*?)</tr>", Pattern.DOTALL);
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private static final Pattern P_DEPARTURES_FINE = Pattern.compile(".*?" //
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+ "<td class=\"[\\w ]*\">(\\d{1,2}:\\d{2})</td>\n" // plannedTime
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+ "(?:<td class=\"[\\w ]*prognosis[\\w ]*\">\n" //
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+ "(?: |<span class=\"rtLimit\\d\">(pünktlich|\\d{1,2}:\\d{2})</span>)\n</td>\n" // predictedTime
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+ ")?.*?" //
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+ "<img src=\"/hafas-res/img/(\\w+)_pic\\.gif\"[^>]*>\\s*(.*?)\\s*</.*?" // type, line
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+ "<span class=\"bold\">\n" //
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+ "<a href=\"http://www\\.vgs-online\\.de/cgi-bin/stboard\\.exe/dn\\?input=(\\d+)&[^>]*>" // destinationId
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+ "\\s*(.*?)\\s*</a>\n" // destination
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+ "</span>.*?" //
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+ "(?:<td class=\"center sepline top\">\n(" + ParserUtils.P_PLATFORM + ").*?)?" // position
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, Pattern.DOTALL);
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public QueryDeparturesResult queryDepartures(final int stationId, final int maxDepartures, final boolean equivs) throws IOException
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{
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final QueryDeparturesResult result = new QueryDeparturesResult();
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// scrape page
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final String uri = departuresQueryUri(stationId, maxDepartures);
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final CharSequence page = ParserUtils.scrape(uri);
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// parse page
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final Matcher mHeadCoarse = P_DEPARTURES_HEAD_COARSE.matcher(page);
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if (mHeadCoarse.matches())
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{
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// messages
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if (mHeadCoarse.group(3) != null)
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{
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result.stationDepartures.add(new StationDepartures(new Location(LocationType.STATION, stationId),
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Collections.<Departure> emptyList(), null));
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return result;
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}
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else if (mHeadCoarse.group(4) != null)
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return new QueryDeparturesResult(Status.INVALID_STATION);
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else if (mHeadCoarse.group(5) != null)
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return new QueryDeparturesResult(Status.SERVICE_DOWN);
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final Matcher mHeadFine = P_DEPARTURES_HEAD_FINE.matcher(mHeadCoarse.group(1));
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if (mHeadFine.matches())
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{
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final String location = ParserUtils.resolveEntities(mHeadFine.group(1));
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final Calendar currentTime = new GregorianCalendar(timeZone());
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currentTime.clear();
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ParserUtils.parseGermanDate(currentTime, mHeadFine.group(2));
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ParserUtils.parseEuropeanTime(currentTime, mHeadFine.group(3));
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final List<Departure> departures = new ArrayList<Departure>(8);
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String oldZebra = null;
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final Matcher mDepCoarse = P_DEPARTURES_COARSE.matcher(mHeadCoarse.group(2));
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while (mDepCoarse.find())
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{
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final String zebra = mDepCoarse.group(1);
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if (oldZebra != null && zebra.equals(oldZebra))
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throw new IllegalArgumentException("missed row? last:" + zebra);
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else
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oldZebra = zebra;
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final Matcher mDepFine = P_DEPARTURES_FINE.matcher(mDepCoarse.group(2));
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if (mDepFine.matches())
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{
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final Calendar plannedTime = new GregorianCalendar(timeZone());
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plannedTime.setTimeInMillis(currentTime.getTimeInMillis());
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ParserUtils.parseEuropeanTime(plannedTime, mDepFine.group(1));
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if (plannedTime.getTimeInMillis() - currentTime.getTimeInMillis() < -PARSER_DAY_ROLLOVER_THRESHOLD_MS)
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plannedTime.add(Calendar.DAY_OF_MONTH, 1);
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final Calendar predictedTime;
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final String prognosis = ParserUtils.resolveEntities(mDepFine.group(2));
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if (prognosis != null)
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{
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predictedTime = new GregorianCalendar(timeZone());
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if (!prognosis.equals("pünktlich"))
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{
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predictedTime.setTimeInMillis(plannedTime.getTimeInMillis());
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}
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else
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{
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predictedTime.setTimeInMillis(currentTime.getTimeInMillis());
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ParserUtils.parseEuropeanTime(predictedTime, prognosis);
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}
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}
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else
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{
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predictedTime = null;
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}
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final String lineType = mDepFine.group(3);
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final String line = normalizeLine(lineType, ParserUtils.resolveEntities(mDepFine.group(4)));
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final int destinationId = mDepFine.group(5) != null ? Integer.parseInt(mDepFine.group(5)) : 0;
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final String destination = ParserUtils.resolveEntities(mDepFine.group(6));
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final String position = mDepFine.group(7) != null ? "Gl. " + ParserUtils.resolveEntities(mDepFine.group(7)) : null;
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final Departure dep = new Departure(plannedTime.getTime(), predictedTime != null ? predictedTime.getTime() : null, line,
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line != null ? lineColors(line) : null, null, position, destinationId, destination, null);
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if (!departures.contains(dep))
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departures.add(dep);
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}
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else
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{
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throw new IllegalArgumentException("cannot parse '" + mDepCoarse.group(2) + "' on " + stationId);
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}
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}
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result.stationDepartures.add(new StationDepartures(new Location(LocationType.STATION, stationId, null, location), departures, null));
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return result;
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}
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else
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{
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throw new IllegalArgumentException("cannot parse '" + mHeadCoarse.group(1) + "' on " + stationId);
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}
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}
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else
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{
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throw new IllegalArgumentException("cannot parse '" + page + "' on " + stationId);
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}
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}
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@Override
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protected char normalizeType(final String type)
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{
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final String ucType = type.toUpperCase();
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if (ucType.equals("INT")) // Zürich-Brüssel
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return 'I';
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if (ucType.equals("SBS"))
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return 'S';
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if (ucType.equals("E")) // Stadtbahn Karlsruhe: S4/S31/xxxxx
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return 'S';
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if (ucType.equals("BSS"))
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return 'B';
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if (ucType.equals("BOV"))
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return 'B';
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if (ucType.equals("T84")) // U.K.
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return '?';
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final char t = super.normalizeType(type);
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if (t != 0)
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return t;
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return 0;
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}
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}
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