--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/backend/src/main/java/org/dive4elements/river/importer/parsers/PorosityParser.java	Wed Apr 30 14:11:29 2014 +0200
@@ -0,0 +1,201 @@
+/* Copyright (C) 2011, 2012, 2013 by Bundesanstalt für Gewässerkunde
+ * Software engineering by Intevation GmbH
+ *
+ * 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.parsers;
+
+import org.dive4elements.river.importer.ImportDepth;
+import org.dive4elements.river.importer.ImportPorosity;
+import org.dive4elements.river.importer.ImportPorosityValue;
+import org.dive4elements.river.importer.ImportSedimentDensity;
+import org.dive4elements.river.importer.ImportSedimentDensityValue;
+import org.dive4elements.river.importer.ImportTimeInterval;
+
+import java.io.File;
+import java.io.IOException;
+
+import java.math.BigDecimal;
+
+import java.text.NumberFormat;
+import java.text.ParseException;
+
+import java.util.ArrayList;
+import java.util.Date;
+import java.util.List;
+
+import java.util.regex.Matcher;
+import java.util.regex.Pattern;
+
+import org.apache.log4j.Logger;
+
+public class PorosityParser extends LineParser {
+
+    private static final Logger log =
+        Logger.getLogger(PorosityParser.class);
+
+    public static final NumberFormat nf =
+        NumberFormat.getInstance(DEFAULT_LOCALE);
+
+    public static final Pattern META_DEPTH =
+        Pattern.compile("^Tiefe: (\\w++)-(\\w++)( (\\w++))?.*");
+
+    public static final Pattern META_TIMEINTERVAL =
+        Pattern.compile("^Zeitraum: (\\d{4})-(\\d{4}).*");
+
+    protected List<ImportPorosity> porosities;
+
+    protected ImportPorosity current;
+
+    protected String currentDescription;
+
+    public PorosityParser() {
+        porosities = new ArrayList<ImportPorosity>();
+    }
+
+
+    @Override
+    public void parse(File file) throws IOException {
+        currentDescription = file.getName();
+
+        super.parse(file);
+    }
+
+
+    @Override
+    protected void reset() {
+        current = new ImportPorosity(currentDescription);
+    }
+
+
+    @Override
+    protected void finish() {
+        if (current != null) {
+            porosities.add(current);
+        }
+    }
+
+
+    @Override
+    protected void handleLine(int lineNum, String line) {
+        if (line.startsWith(START_META_CHAR)) {
+            handleMetaLine(stripMetaLine(line));
+        }
+        else {
+            handleDataLine(line);
+        }
+    }
+
+
+    protected void handleMetaLine(String line) {
+        if (handleMetaDepth(line)) {
+            return;
+        }
+        if (handleMetaTimeInterval(line)) {
+            return;
+        }
+        log.warn("Unknown meta line: '" + line + "'");
+    }
+
+    protected boolean handleMetaTimeInterval(String line) {
+        Matcher m = META_TIMEINTERVAL.matcher(line);
+
+        if (m.matches()) {
+            String lo = m.group(1);
+            String up = m.group(2);
+
+            log.debug("Found time interval: " + lo + " - " + up);
+
+            try {
+                int lower = Integer.valueOf(lo);
+                int upper = Integer.valueOf(up);
+
+                Date fromYear = LineParser.getStartDateFromYear(lower);
+                Date toYear   = LineParser.getEndDateFromYear(upper);
+
+                current.setTimeInterval(new ImportTimeInterval(fromYear, toYear));
+            }
+            catch (NumberFormatException e) {
+                log.warn("PP: could not parse timeinterval", e);
+            }
+
+            return true;
+        }
+
+        return false;
+    }
+
+    protected boolean handleMetaDepth(String line) {
+        Matcher m = META_DEPTH.matcher(line);
+
+        if (m.matches()) {
+            String lo   = m.group(1);
+            String up   = m.group(2);
+
+            log.info("Found porosity depth: " + lo + " - " + up + " cm");
+
+            try {
+                ImportDepth depth = new ImportDepth(
+                    new BigDecimal(nf.parse(lo).doubleValue()),
+                    new BigDecimal(nf.parse(up).doubleValue())
+                );
+
+                current.setDepth(depth);
+
+                return true;
+            }
+            catch (ParseException pe) {
+                log.warn("Unparseable numbers in: '" + line + "'");
+            }
+        }
+        else {
+            log.debug("Meta line doesn't contain depth information: " + line);
+        }
+
+        return false;
+    }
+
+    protected void handleDataLine(String line) {
+        String[] vals = line.split(SEPERATOR_CHAR);
+        log.debug("handle line: " + line);
+
+        if (vals == null || vals.length < 3) {
+            log.warn("skip invalid data line: '" + line + "'");
+            return;
+        }
+
+        BigDecimal km = null;
+        BigDecimal shoreOffset = null;
+        BigDecimal porosity = null;
+        try {
+            km          = new BigDecimal(nf.parse(vals[0]).doubleValue());
+            porosity     = new BigDecimal(nf.parse(vals[2]).doubleValue());
+            if (!vals[1].isEmpty()) {
+                shoreOffset = new BigDecimal(nf.parse(vals[1]).doubleValue());
+            }
+        }
+        catch (ParseException pe) {
+            log.warn("Unparseable numbers in '" + line + "'");
+        }
+
+        if (km == null || porosity == null) {
+            log.warn("PP: No km nor porosity given. Skip line");
+            return;
+        }
+        log.debug("add new value.");
+        current.addValue(new ImportPorosityValue(
+            km,
+            shoreOffset,
+            porosity,
+            currentDescription));
+    }
+
+
+    public List<ImportPorosity> getPorosities() {
+        return porosities;
+    }
+}
+// vim:set ts=4 sw=4 si et sta sts=4 fenc=utf8 :