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autocomplete using XML-interface for Switzerland and Belgium

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git-svn-id: https://public-transport-enabler.googlecode.com/svn/trunk@300 0924bc21-9374-b0fa-ee44-9ff1593b38f0
This commit is contained in:
andreas.schildbach 2010-10-16 22:15:55 +00:00
parent 824bab1b5e
commit 06712bf0eb
9 changed files with 165 additions and 41 deletions
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94
src/de/schildbach/pte/AbstractHafasProvider.java
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@ -18,6 +18,8 @@
package de.schildbach.pte;
import java.io.IOException;
import java.io.InputStream;
import java.net.SocketTimeoutException;
import java.util.ArrayList;
import java.util.HashMap;
import java.util.List;
@ -25,16 +27,108 @@ import java.util.Map;
import java.util.regex.Matcher;
import java.util.regex.Pattern;
import org.xmlpull.v1.XmlPullParser;
import org.xmlpull.v1.XmlPullParserException;
import org.xmlpull.v1.XmlPullParserFactory;
import de.schildbach.pte.dto.Location;
import de.schildbach.pte.dto.LocationType;
import de.schildbach.pte.dto.NearbyStationsResult;
import de.schildbach.pte.dto.Station;
import de.schildbach.pte.util.Color;
import de.schildbach.pte.util.ParserUtils;
import de.schildbach.pte.util.XmlPullUtil;
/**
* @author Andreas Schildbach
*/
public abstract class AbstractHafasProvider implements NetworkProvider
{
private static final String DEFAULT_ENCODING = "ISO-8859-1";
private final String autocompleteUri;
private final String prod;
private final String accessId;
public AbstractHafasProvider(final String autocompleteUri, final String prod, final String accessId)
{
this.autocompleteUri = autocompleteUri;
this.prod = prod;
this.accessId = accessId;
}
public List<Location> autocompleteStations(final CharSequence constraint) throws IOException
{
final String request = "<?xml version=\"1.0\" encoding=\"iso-8859-1\"?>" //
+ "<ReqC ver=\"1.1\" prod=\"" + prod + "\" lang=\"DE\"" + (accessId != null ? " accessId=\"" + accessId + "\"" : "") + ">" //
+ "<LocValReq id=\"station\" maxNr=\"10\"><ReqLoc match=\"" + constraint + "\" type=\"ST\"/></LocValReq>" //
+ "<LocValReq id=\"poi\" maxNr=\"10\"><ReqLoc match=\"" + constraint + "\" type=\"POI\"/></LocValReq>" //
+ "</ReqC>";
InputStream is = null;
try
{
is = ParserUtils.scrapeInputStream(autocompleteUri, request);
final List<Location> results = new ArrayList<Location>();
final XmlPullParserFactory factory = XmlPullParserFactory.newInstance(System.getProperty(XmlPullParserFactory.PROPERTY_NAME), null);
final XmlPullParser pp = factory.newPullParser();
pp.setInput(is, DEFAULT_ENCODING);
XmlPullUtil.jump(pp, "ResC");
XmlPullUtil.enter(pp);
XmlPullUtil.require(pp, "LocValRes");
XmlPullUtil.requireAttr(pp, "id", "station");
XmlPullUtil.enter(pp);
while (XmlPullUtil.test(pp, "Station"))
{
final String name = pp.getAttributeValue(null, "name");
final int id = Integer.parseInt(pp.getAttributeValue(null, "externalStationNr"));
final int x = Integer.parseInt(pp.getAttributeValue(null, "x"));
final int y = Integer.parseInt(pp.getAttributeValue(null, "y"));
results.add(new Location(LocationType.STATION, id, y, x, name));
XmlPullUtil.skipTree(pp);
}
XmlPullUtil.exit(pp);
XmlPullUtil.require(pp, "LocValRes");
XmlPullUtil.requireAttr(pp, "id", "poi");
XmlPullUtil.enter(pp);
while (XmlPullUtil.test(pp, "Poi"))
{
final String name = pp.getAttributeValue(null, "name");
final int x = Integer.parseInt(pp.getAttributeValue(null, "x"));
final int y = Integer.parseInt(pp.getAttributeValue(null, "y"));
results.add(new Location(LocationType.POI, 0, y, x, name));
XmlPullUtil.skipTree(pp);
}
XmlPullUtil.exit(pp);
return results;
}
catch (final XmlPullParserException x)
{
throw new RuntimeException(x);
}
catch (final SocketTimeoutException x)
{
throw new RuntimeException(x);
}
finally
{
if (is != null)
is.close();
}
}
private final static Pattern P_NEARBY_COARSE = Pattern.compile("<tr class=\"(zebra[^\"]*)\">(.*?)</tr>", Pattern.DOTALL);
private final static Pattern P_NEARBY_FINE_COORDS = Pattern
.compile("&REQMapRoute0\\.Location0\\.X=(-?\\d+)&REQMapRoute0\\.Location0\\.Y=(-?\\d+)&");