001// License: GPL. See LICENSE file for details.
002package org.openstreetmap.josm.data.validation.tests;
003
004import static org.openstreetmap.josm.tools.I18n.tr;
005
006import java.util.ArrayList;
007import java.util.Collection;
008import java.util.HashSet;
009import java.util.Set;
010import java.util.regex.Pattern;
011
012import org.openstreetmap.josm.Main;
013import org.openstreetmap.josm.data.osm.OsmPrimitive;
014import org.openstreetmap.josm.data.validation.Severity;
015import org.openstreetmap.josm.data.validation.Test;
016import org.openstreetmap.josm.data.validation.TestError;
017import org.openstreetmap.josm.tools.Predicates;
018import org.openstreetmap.josm.tools.Utils;
019
020/**
021 * Test that validates {@code lane:} tags.
022 * @since 6592
023 */
024public class Lanes extends Test.TagTest {
025
026    /**
027     * Constructs a new {@code Lanes} test.
028     */
029    public Lanes() {
030        super(tr("Lane tags"), tr("Test that validates ''lane:'' tags."));
031    }
032
033    static int getLanesCount(String value) {
034        return value.isEmpty() ? 0 : value.replaceAll("[^|]", "").length() + 1;
035    }
036
037    protected void checkNumberOfLanesByKey(final OsmPrimitive p, String lanesKey, String message) {
038        final Collection<String> keysForPattern = new ArrayList<>(Utils.filter(p.keySet(),
039                Predicates.stringContainsPattern(Pattern.compile(":" + lanesKey + "$"))));
040        keysForPattern.remove("source:lanes");
041        if (keysForPattern.size() < 1) {
042            // nothing to check
043            return;
044        }
045        final Set<Integer> lanesCount = new HashSet<>(Utils.transform(keysForPattern, new Utils.Function<String, Integer>() {
046            @Override
047            public Integer apply(String key) {
048                return getLanesCount(p.get(key));
049            }
050        }));
051        if (lanesCount.size() > 1) {
052            // if not all numbers are the same
053            errors.add(new TestError(this, Severity.WARNING, message, 3100, p));
054        } else if (lanesCount.size() == 1 && p.hasKey(lanesKey)) {
055            // ensure that lanes <= *:lanes
056            try {
057                if (Integer.parseInt(p.get(lanesKey)) > lanesCount.iterator().next()) {
058                    errors.add(new TestError(this, Severity.WARNING, tr("Number of {0} greater than {1}", lanesKey, "*:" + lanesKey), 3100, p));
059                }
060            } catch (NumberFormatException ignore) {
061                Main.debug(ignore.getMessage());
062            }
063        }
064    }
065
066    protected void checkNumberOfLanes(final OsmPrimitive p) {
067        final String lanes = p.get("lanes");
068        if (lanes == null) return;
069        final String forward = Utils.firstNonNull(p.get("lanes:forward"), "0");
070        final String backward = Utils.firstNonNull(p.get("lanes:backward"), "0");
071        try {
072        if (Integer.parseInt(lanes) < Integer.parseInt(forward) + Integer.parseInt(backward)) {
073            errors.add(new TestError(this, Severity.WARNING,
074                    tr("Number of {0} greater than {1}", tr("{0}+{1}", "lanes:forward", "lanes:backward"), "lanes"), 3101, p));
075        }
076        } catch (NumberFormatException ignore) {
077            Main.debug(ignore.getMessage());
078        }
079    }
080
081    @Override
082    public void check(OsmPrimitive p) {
083        checkNumberOfLanesByKey(p, "lanes", tr("Number of lane dependent values inconsistent"));
084        checkNumberOfLanesByKey(p, "lanes:forward", tr("Number of lane dependent values inconsistent in forward direction"));
085        checkNumberOfLanesByKey(p, "lanes:backward", tr("Number of lane dependent values inconsistent in backward direction"));
086        checkNumberOfLanes(p);
087    }
088}