sub-project for enabler

enabler/src/de/schildbach/pte/VbbProvider.java

@@ -0,0 +1,175 @@
+/*
+ * Copyright 2010, 2011 the original author or authors.
+ * 
+ * This program 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 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program 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 this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+package de.schildbach.pte;
+
+import java.io.IOException;
+import java.util.List;
+import java.util.regex.Matcher;
+import java.util.regex.Pattern;
+
+import de.schildbach.pte.dto.Location;
+import de.schildbach.pte.dto.LocationType;
+import de.schildbach.pte.dto.NearbyStationsResult;
+import de.schildbach.pte.dto.QueryDeparturesResult;
+import de.schildbach.pte.util.ParserUtils;
+
+/**
+ * @author Andreas Schildbach
+ */
+public class VbbProvider extends AbstractHafasProvider
+{
+	public static final NetworkId NETWORK_ID = NetworkId.VBB;
+	private static final String API_BASE = "http://www.vbb-fahrinfo.de/hafas/";
+
+	public VbbProvider()
+	{
+		super(API_BASE + "query.exe/dn", 7, null);
+	}
+
+	public NetworkId id()
+	{
+		return NETWORK_ID;
+	}
+
+	public boolean hasCapabilities(final Capability... capabilities)
+	{
+		for (final Capability capability : capabilities)
+			if (capability == Capability.DEPARTURES || capability == Capability.AUTOCOMPLETE_ONE_LINE || capability == Capability.CONNECTIONS)
+				return true;
+
+		return false;
+	}
+
+	@Override
+	protected void setProductBits(final StringBuilder productBits, final char product)
+	{
+		if (product == 'I')
+		{
+			productBits.setCharAt(5, '1');
+		}
+		else if (product == 'R')
+		{
+			productBits.setCharAt(6, '1');
+		}
+		else if (product == 'S')
+		{
+			productBits.setCharAt(0, '1');
+		}
+		else if (product == 'U')
+		{
+			productBits.setCharAt(1, '1');
+		}
+		else if (product == 'T')
+		{
+			productBits.setCharAt(2, '1');
+		}
+		else if (product == 'B' || product == 'P')
+		{
+			productBits.setCharAt(3, '1');
+		}
+		else if (product == 'F')
+		{
+			productBits.setCharAt(4, '1');
+		}
+		else if (product == 'C')
+		{
+		}
+		else
+		{
+			throw new IllegalArgumentException("cannot handle: " + product);
+		}
+	}
+
+	private static final Pattern P_SPLIT_NAME_PAREN = Pattern.compile("(.*?) \\((.{4,}?)\\)(?: \\((U|S|S\\+U)\\))?");
+	private static final Pattern P_SPLIT_NAME_COMMA = Pattern.compile("([^,]*), ([^,]*)");
+
+	@Override
+	protected String[] splitPlaceAndName(final String name)
+	{
+		final Matcher mParen = P_SPLIT_NAME_PAREN.matcher(name);
+		if (mParen.matches())
+		{
+			final String su = mParen.group(3);
+			return new String[] { mParen.group(2), mParen.group(1) + (su != null ? " (" + su + ")" : "") };
+		}
+
+		final Matcher mComma = P_SPLIT_NAME_COMMA.matcher(name);
+		if (mComma.matches())
+			return new String[] { mComma.group(1), mComma.group(2) };
+
+		return super.splitPlaceAndName(name);
+	}
+
+	public NearbyStationsResult queryNearbyStations(final Location location, final int maxDistance, final int maxStations) throws IOException
+	{
+		final StringBuilder uri = new StringBuilder(API_BASE);
+
+		if (location.hasLocation())
+		{
+			uri.append("query.exe/dny");
+			uri.append("?performLocating=2&tpl=stop2json");
+			uri.append("&look_maxno=").append(maxStations != 0 ? maxStations : 200);
+			uri.append("&look_maxdist=").append(maxDistance != 0 ? maxDistance : 5000);
+			uri.append("&look_stopclass=").append(allProductsInt());
+			uri.append("&look_x=").append(location.lon);
+			uri.append("&look_y=").append(location.lat);
+
+			return jsonNearbyStations(uri.toString());
+		}
+		else if (location.type == LocationType.STATION && location.hasId())
+		{
+			uri.append("stboard.exe/dn");
+			uri.append("?productsFilter=").append(allProductsString());
+			uri.append("&boardType=dep");
+			uri.append("&input=").append(location.id);
+			uri.append("&sTI=1&start=yes&hcount=0");
+			uri.append("&L=vs_java3");
+
+			return xmlNearbyStations(uri.toString());
+		}
+		else
+		{
+			throw new IllegalArgumentException("cannot handle: '" + location.toDebugString());
+		}
+	}
+
+	public QueryDeparturesResult queryDepartures(final int stationId, final int maxDepartures, final boolean equivs) throws IOException
+	{
+		final StringBuilder uri = new StringBuilder();
+		uri.append(API_BASE).append("stboard.exe/dn");
+		uri.append("?productsFilter=").append(allProductsString());
+		uri.append("&boardType=dep");
+		uri.append("&disableEquivs=yes"); // don't use nearby stations
+		uri.append("&maxJourneys=50"); // ignore maxDepartures because result contains other stations
+		uri.append("&start=yes");
+		uri.append("&L=vs_java3");
+		uri.append("&input=").append(stationId);
+
+		return xmlQueryDepartures(uri.toString(), stationId);
+	}
+
+	private static final String AUTOCOMPLETE_URI = API_BASE + "ajax-getstop.exe/dn?getstop=1&REQ0JourneyStopsS0A=255&S=%s?&js=true&";
+	private static final String ENCODING = "ISO-8859-1";
+
+	public List<Location> autocompleteStations(final CharSequence constraint) throws IOException
+	{
+		final String uri = String.format(AUTOCOMPLETE_URI, ParserUtils.urlEncode(constraint.toString(), ENCODING));
+
+		return jsonGetStops(uri);
+	}
+}