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https://gitlab.com/oeffi/public-transport-enabler.git
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separate parsing of live and planned departures
git-svn-id: https://public-transport-enabler.googlecode.com/svn/trunk@419 0924bc21-9374-b0fa-ee44-9ff1593b38f0
This commit is contained in:
andreas.schildbach@gmail.com
parent
0b5a05f922
commit
221e4eabbe
1 changed files with 143 additions and 69 deletions
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@ -526,14 +526,21 @@ public final class BvgProvider extends AbstractHafasProvider
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}
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private static final String DEPARTURE_URL_LIVE = "http://mobil.bvg.de/IstAbfahrtzeiten/index/mobil?";
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private String departuresQueryLiveUri(final String stationId)
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{
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final StringBuilder uri = new StringBuilder();
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uri.append(DEPARTURE_URL_LIVE);
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uri.append("input=").append(stationId);
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return uri.toString();
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}
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private static final String DEPARTURE_URL_PLAN = "http://mobil.bvg.de/Fahrinfo/bin/stboard.bin/dox/dox?boardType=dep&disableEquivs=yes&start=yes&";
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private String departuresQueryUri(final String stationId, final int maxDepartures)
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private String departuresQueryPlanUri(final String stationId, final int maxDepartures)
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{
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final boolean live = stationId.length() == 6;
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final StringBuilder uri = new StringBuilder();
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uri.append(live ? DEPARTURE_URL_LIVE : DEPARTURE_URL_PLAN);
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uri.append(DEPARTURE_URL_PLAN);
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uri.append("input=").append(stationId);
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uri.append("&maxJourneys=").append(maxDepartures != 0 ? maxDepartures : 50);
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return uri.toString();
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@ -558,82 +565,149 @@ public final class BvgProvider extends AbstractHafasProvider
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+ "<a href=\"/Fahrinfo/bin/stboard\\.bin/dox/dox.*?evaId=(\\d+)&[^>]*>" // destinationId
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+ "\\s*(.*?)\\s*</a>.*?" // destination
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, Pattern.DOTALL);
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private static final Pattern P_DEPARTURES_ERRORS = Pattern.compile("(derzeit leider nicht bearbeitet werden)|(Wartungsarbeiten)");
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private static final Pattern P_DEPARTURES_LIVE_ERRORS = Pattern.compile("(Haltestelle:)");
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private static final Pattern P_DEPARTURES_PLAN_ERRORS = Pattern.compile("(derzeit leider nicht bearbeitet werden)|(Wartungsarbeiten)");
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public QueryDeparturesResult queryDepartures(final String stationId, final int maxDepartures) throws IOException
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{
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final String uri = departuresQueryUri(stationId, maxDepartures);
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final CharSequence page = ParserUtils.scrape(uri);
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final Matcher mError = P_DEPARTURES_ERRORS.matcher(page);
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if (mError.find())
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if (stationId.length() == 6) // live
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{
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if (mError.group(1) != null)
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return new QueryDeparturesResult(Status.INVALID_STATION, Integer.parseInt(stationId));
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if (mError.group(2) != null)
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return new QueryDeparturesResult(Status.SERVICE_DOWN, Integer.parseInt(stationId));
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}
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final String uri = departuresQueryLiveUri(stationId);
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final CharSequence page = ParserUtils.scrape(uri);
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final boolean live = stationId.length() == 6;
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// parse page
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final Matcher mHead = P_DEPARTURES_HEAD.matcher(page);
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if (mHead.matches())
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{
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final String location = ParserUtils.resolveEntities(mHead.group(1));
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final Date currentTime = parseDate(mHead.group(2));
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final List<Departure> departures = new ArrayList<Departure>(8);
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// choose matcher
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final Matcher mDepCoarse = P_DEPARTURES_COARSE.matcher(page);
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while (mDepCoarse.find())
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final Matcher mError = P_DEPARTURES_LIVE_ERRORS.matcher(page);
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if (mError.find())
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{
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final Matcher mDepFine = (live ? P_DEPARTURES_LIVE_FINE : P_DEPARTURES_PLAN_FINE).matcher(mDepCoarse.group(1));
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if (mDepFine.matches())
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{
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final Calendar current = new GregorianCalendar();
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current.setTime(currentTime);
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final Calendar parsed = new GregorianCalendar();
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parsed.setTime(ParserUtils.parseTime(mDepFine.group(1)));
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parsed.set(Calendar.YEAR, current.get(Calendar.YEAR));
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parsed.set(Calendar.MONTH, current.get(Calendar.MONTH));
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parsed.set(Calendar.DAY_OF_MONTH, current.get(Calendar.DAY_OF_MONTH));
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if (ParserUtils.timeDiff(parsed.getTime(), currentTime) < -PARSER_DAY_ROLLOVER_THRESHOLD_MS)
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parsed.add(Calendar.DAY_OF_MONTH, 1);
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boolean isPlanned = live && mDepFine.group(2) != null;
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Date plannedTime = null;
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Date predictedTime = null;
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if (live && !isPlanned)
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predictedTime = parsed.getTime();
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else
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plannedTime = parsed.getTime();
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final String line = normalizeLine(ParserUtils.resolveEntities(mDepFine.group(live ? 3 : 2)));
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final String position = !live ? ParserUtils.resolveEntities(mDepFine.group(3)) : null;
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final int destinationId = !live ? Integer.parseInt(mDepFine.group(4)) : 0;
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final String destination = ParserUtils.resolveEntities(mDepFine.group(live ? 4 : 5));
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final Departure dep = new Departure(plannedTime, predictedTime, line, line != null ? lineColors(line) : null, null, position,
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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(1) + "' on " + uri);
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}
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if (mError.group(1) != null)
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return new QueryDeparturesResult(Status.INVALID_STATION, Integer.parseInt(stationId));
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}
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return new QueryDeparturesResult(new Location(LocationType.STATION, Integer.parseInt(stationId), location), departures, null);
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// parse page
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final Matcher mHead = P_DEPARTURES_HEAD.matcher(page);
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if (mHead.matches())
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{
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final String location = ParserUtils.resolveEntities(mHead.group(1));
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final Date currentTime = parseDate(mHead.group(2));
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final List<Departure> departures = new ArrayList<Departure>(8);
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// choose matcher
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final Matcher mDepCoarse = P_DEPARTURES_COARSE.matcher(page);
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while (mDepCoarse.find())
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{
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final Matcher mDepFine = P_DEPARTURES_LIVE_FINE.matcher(mDepCoarse.group(1));
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if (mDepFine.matches())
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{
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final Calendar current = new GregorianCalendar();
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current.setTime(currentTime);
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final Calendar parsed = new GregorianCalendar();
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parsed.setTime(ParserUtils.parseTime(mDepFine.group(1)));
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parsed.set(Calendar.YEAR, current.get(Calendar.YEAR));
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parsed.set(Calendar.MONTH, current.get(Calendar.MONTH));
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parsed.set(Calendar.DAY_OF_MONTH, current.get(Calendar.DAY_OF_MONTH));
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if (ParserUtils.timeDiff(parsed.getTime(), currentTime) < -PARSER_DAY_ROLLOVER_THRESHOLD_MS)
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parsed.add(Calendar.DAY_OF_MONTH, 1);
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boolean isPlanned = mDepFine.group(2) != null;
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Date plannedTime = null;
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Date predictedTime = null;
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if (!isPlanned)
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predictedTime = parsed.getTime();
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else
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plannedTime = parsed.getTime();
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final String line = normalizeLine(ParserUtils.resolveEntities(mDepFine.group(3)));
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final String position = null;
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final int destinationId = 0;
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final String destination = ParserUtils.resolveEntities(mDepFine.group(4));
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final Departure dep = new Departure(plannedTime, predictedTime, line, line != null ? lineColors(line) : null, null, position,
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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(1) + "' on " + uri);
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}
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}
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return new QueryDeparturesResult(new Location(LocationType.STATION, Integer.parseInt(stationId), location), departures, null);
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}
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else
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{
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throw new IllegalArgumentException("cannot parse '" + page + "' on " + uri);
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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 " + uri);
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final String uri = departuresQueryPlanUri(stationId, maxDepartures);
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final CharSequence page = ParserUtils.scrape(uri);
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final Matcher mError = P_DEPARTURES_PLAN_ERRORS.matcher(page);
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if (mError.find())
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{
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if (mError.group(1) != null)
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return new QueryDeparturesResult(Status.INVALID_STATION, Integer.parseInt(stationId));
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if (mError.group(2) != null)
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return new QueryDeparturesResult(Status.SERVICE_DOWN, Integer.parseInt(stationId));
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}
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// parse page
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final Matcher mHead = P_DEPARTURES_HEAD.matcher(page);
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if (mHead.matches())
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{
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final String location = ParserUtils.resolveEntities(mHead.group(1));
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final Date currentTime = parseDate(mHead.group(2));
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final List<Departure> departures = new ArrayList<Departure>(8);
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// choose matcher
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final Matcher mDepCoarse = P_DEPARTURES_COARSE.matcher(page);
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while (mDepCoarse.find())
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{
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final Matcher mDepFine = P_DEPARTURES_PLAN_FINE.matcher(mDepCoarse.group(1));
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if (mDepFine.matches())
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{
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final Calendar current = new GregorianCalendar();
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current.setTime(currentTime);
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final Calendar parsed = new GregorianCalendar();
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parsed.setTime(ParserUtils.parseTime(mDepFine.group(1)));
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parsed.set(Calendar.YEAR, current.get(Calendar.YEAR));
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parsed.set(Calendar.MONTH, current.get(Calendar.MONTH));
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parsed.set(Calendar.DAY_OF_MONTH, current.get(Calendar.DAY_OF_MONTH));
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if (ParserUtils.timeDiff(parsed.getTime(), currentTime) < -PARSER_DAY_ROLLOVER_THRESHOLD_MS)
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parsed.add(Calendar.DAY_OF_MONTH, 1);
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final Date plannedTime = parsed.getTime();
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final String line = normalizeLine(ParserUtils.resolveEntities(mDepFine.group(2)));
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final String position = ParserUtils.resolveEntities(mDepFine.group(3));
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final int destinationId = Integer.parseInt(mDepFine.group(4));
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final String destination = ParserUtils.resolveEntities(mDepFine.group(5));
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final Departure dep = new Departure(plannedTime, null, line, line != null ? lineColors(line) : null, null, position,
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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(1) + "' on " + uri);
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}
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}
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return new QueryDeparturesResult(new Location(LocationType.STATION, Integer.parseInt(stationId), location), departures, null);
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}
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else
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{
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throw new IllegalArgumentException("cannot parse '" + page + "' on " + uri);
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}
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}
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}
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