--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/backend/src/main/java/org/dive4elements/river/importer/sinfo/parsers/CollisionParser.java	Tue Apr 03 10:18:30 2018 +0200
@@ -0,0 +1,191 @@
+/* Copyright (C) 2017 by Bundesanstalt für Gewässerkunde
+ * Software engineering by
+ *  Björnsen Beratende Ingenieure GmbH
+ *  Dr. Schumacher Ingenieurbüro für Wasser und Umwelt
+ *
+ * This file is Free Software under the GNU AGPL (>=v3)
+ * and comes with ABSOLUTELY NO WARRANTY! Check out the
+ * documentation coming with Dive4Elements River for details.
+ */
+
+package org.dive4elements.river.importer.sinfo.parsers;
+
+import java.io.File;
+import java.text.DateFormat;
+import java.text.SimpleDateFormat;
+import java.util.ArrayList;
+import java.util.Date;
+import java.util.EnumMap;
+import java.util.HashMap;
+import java.util.List;
+import java.util.regex.Matcher;
+import java.util.regex.Pattern;
+
+import org.apache.log4j.Logger;
+import org.dive4elements.river.importer.Config;
+import org.dive4elements.river.importer.ImportRiver;
+import org.dive4elements.river.importer.common.AbstractParser;
+import org.dive4elements.river.importer.common.ParsingState;
+import org.dive4elements.river.importer.sinfo.importitem.CollisionKmLineImport;
+import org.dive4elements.river.importer.sinfo.importitem.CollisionSeriesImport;
+import org.dive4elements.river.importer.sinfo.importitem.CollisionTypeImport;
+import org.dive4elements.river.model.sinfo.Collision;
+import org.dive4elements.river.model.sinfo.CollisionType;
+import org.dive4elements.river.model.sinfo.CollisionValue;
+
+/**
+ * Reads and parses a collision file
+ *
+ * @author Matthias Schäfer
+ *
+ */
+public class CollisionParser extends AbstractParser<Collision, CollisionValue, CollisionKmLineImport, CollisionSeriesImport> {
+
+    /***** FIELDS *****/
+
+    private static final Logger log = Logger.getLogger(CollisionParser.class);
+
+    private static final Pattern META_YEAR = Pattern.compile("^#\\sJahr:\\s*([12]\\d\\d\\d).*", Pattern.CASE_INSENSITIVE);
+
+    private enum ColTitlePattern {
+        DATE("Datum.*"), //
+        GAUGE_W("Pegelstand\\s*\\[(.*)\\].*"), //
+        GAUGE_NAME("Bezugspegel.*"), //
+        TYPE("Unfallart.*");
+
+        private final Pattern pattern;
+
+        ColTitlePattern(final String regexp) {
+            this.pattern = Pattern.compile(regexp, Pattern.CASE_INSENSITIVE);
+        }
+
+        public Pattern getPattern() {
+            return this.pattern;
+        }
+    }
+
+    private static final DateFormat dateFormat = new SimpleDateFormat("dd.MM.yyyy");
+
+    private final EnumMap<ColTitlePattern, Integer> cols = new EnumMap<>(ColTitlePattern.class);
+
+    private final HashMap<String, CollisionTypeImport> types;
+
+
+    /***** CONSTRUCTORS *****/
+
+    public CollisionParser(final File importPath, final File rootRelativePath, final ImportRiver river) {
+        super(importPath, rootRelativePath, river);
+        this.types = new HashMap<>();
+        for (final CollisionType type : CollisionType.getTypes())
+            this.types.put(type.getName().trim().toLowerCase(), new CollisionTypeImport(type.getName()));
+    }
+
+
+    /***** METHODS *****/
+
+    @Override
+    protected Logger getLog() {
+        return log;
+    }
+
+    /**
+     * Whether this import type shall be skipped
+     */
+    public static boolean shallSkip() {
+        return Config.INSTANCE.skipSInfoCollision();
+    }
+
+    /**
+     * Creates a list of parsers for all collision import files in a directory
+     */
+    public static List<CollisionParser> createParsers(final File importDir, final File relativeDir, final ImportRiver river) {
+        final List<CollisionParser> parsers = new ArrayList<>();
+        for (final File file : listFiles(importDir, ".csv"))
+            parsers.add(new CollisionParser(file, new File(relativeDir, file.getName()), river));
+        return parsers;
+    }
+
+    @Override
+    protected CollisionSeriesImport createSeriesImport(final String filename) {
+        return new CollisionSeriesImport(filename);
+    }
+
+    @Override
+    protected boolean kmMustBeUnique() {
+        return false;
+    }
+
+    @Override
+    protected boolean handleMetaOther() {
+        if (handleMetaYear())
+            return true;
+        else
+            return false;
+    }
+
+    private boolean handleMetaYear() {
+        final Matcher m = META_YEAR.matcher(this.currentLine);
+        if (m.matches()) {
+            this.metaPatternsMatched.add(META_YEAR);
+            this.seriesHeader.setYear(Integer.parseInt(m.group(1)));
+            return true;
+        }
+        return false;
+    }
+
+    @Override
+    protected boolean handleMetaColumnTitles() {
+        if (!super.handleMetaColumnTitles())
+            return false;
+        for (final ColTitlePattern col : ColTitlePattern.values())
+            this.cols.put(col, -1);
+        for (int i = 1; i <= this.columnTitles.size() - 1; i++) {
+            for (final ColTitlePattern col : ColTitlePattern.values()) {
+                if (col.getPattern().matcher(this.columnTitles.get(i)).matches()) {
+                    this.cols.put(col, i);
+                    break;
+                }
+            }
+        }
+        if (this.cols.get(ColTitlePattern.DATE) < 0)
+            logWarning("Column of the event dates could not be identified, missing column title 'Datum'");
+        if (this.cols.get(ColTitlePattern.TYPE) < 0) {
+            logError("Column of the collision types could not be identified, missing column title 'Unfallart'");
+            this.headerParsingState = ParsingState.STOP;
+            return false;
+        }
+        if (!this.metaPatternsMatched.contains(META_YEAR)) {
+            logError("Required meta info for the year is missing");
+            this.headerParsingState = ParsingState.STOP;
+        }
+        return true;
+    }
+
+    @Override
+    protected CollisionKmLineImport createKmLineImport(final Double km, final String[] values) {
+        Date eventDate = null;
+        try {
+            eventDate = dateFormat.parse(values[this.cols.get(ColTitlePattern.DATE)]);
+        }
+        catch (final Exception e) {
+            logError("Invalid date in line " + this.in.getLineNumber());
+            return null;
+        }
+        final String typeName = values[this.cols.get(ColTitlePattern.TYPE)].trim();
+        final String typeKey = typeName.toLowerCase();
+        CollisionTypeImport type = null;
+        if (this.types.containsKey(typeKey))
+            type = this.types.get(typeKey);
+        else {
+            type = new CollisionTypeImport(typeName);
+            this.types.put(typeKey, type);
+        }
+        String gaugeName = null;
+        if (this.cols.get(ColTitlePattern.GAUGE_NAME) >= 0)
+            gaugeName = values[this.cols.get(ColTitlePattern.GAUGE_NAME)].trim();
+        double gaugeW = Double.NaN;
+        if (this.cols.get(ColTitlePattern.GAUGE_W) >= 0)
+            gaugeW = parseDoubleWithNull(values[this.cols.get(ColTitlePattern.GAUGE_W)]).doubleValue();
+        return new CollisionKmLineImport(km, type, eventDate, gaugeName, gaugeW);
+    }
+}