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scan stations nearby given station (rather than just lat/lon)

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git-svn-id: https://public-transport-enabler.googlecode.com/svn/trunk@169 0924bc21-9374-b0fa-ee44-9ff1593b38f0
This commit is contained in:
andreas.schildbach 2010-09-20 12:00:20 +00:00
parent 6ba4ad8395
commit 9f5e011511
9 changed files with 208 additions and 32 deletions
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46
src/de/schildbach/pte/SbbProvider.java
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@ -78,9 +78,51 @@ public class SbbProvider implements NetworkProvider
return results;
}
public List<Station> nearbyStations(final double lat, final double lon, final int maxDistance, final int maxStations) throws IOException
private final static String NEARBY_URI = "http://fahrplan.sbb.ch/bin/bhftafel.exe/dn?input=%d&distance=50&near=Anzeigen";
private final static Pattern P_NEARBY_COARSE = Pattern.compile("<tr class=\"zebra-row-\\d\">(.*?)</tr>", Pattern.DOTALL);
private final static Pattern P_NEARBY_FINE = Pattern.compile(".*?&REQMapRoute0\\.Location0\\.X=(-?\\d+)&REQMapRoute0\\.Location0\\.Y=(-?\\d+)"
+ "&REQMapRoute0\\.Location0\\.Name=(.*?)&sturl=.*?dn\\?input=(\\d+).*?", Pattern.DOTALL);
public List<Station> nearbyStations(final String stationId, final double lat, final double lon, final int maxDistance, final int maxStations)
throws IOException
{
throw new UnsupportedOperationException();
if (stationId == null)
throw new IllegalArgumentException("stationId must be given");
final List<Station> stations = new ArrayList<Station>();
final String uri = String.format(NEARBY_URI, stationId);
final CharSequence page = ParserUtils.scrape(uri);
final Matcher mCoarse = P_NEARBY_COARSE.matcher(page);
while (mCoarse.find())
{
final Matcher mFine = P_NEARBY_FINE.matcher(mCoarse.group(1));
if (mFine.matches())
{
final double parsedLon = latLonToDouble(Integer.parseInt(mFine.group(1)));
final double parsedLat = latLonToDouble(Integer.parseInt(mFine.group(2)));
final String parsedName = ParserUtils.resolveEntities(mFine.group(3));
final int parsedId = Integer.parseInt(mFine.group(4));
final Station station = new Station(parsedId, parsedName, parsedLat, parsedLon, 0, null, null);
stations.add(station);
}
else
{
throw new IllegalArgumentException("cannot parse '" + mCoarse.group(1) + "' on " + uri);
}
}
if (maxStations == 0 || maxStations >= stations.size())
return stations;
else
return stations.subList(0, maxStations);
}
private static double latLonToDouble(int value)
{
return (double) value / 1000000;
}
public StationLocationResult stationLocation(final String stationId) throws IOException