diff flys-backend/src/main/java/de/intevation/flys/importer/parsers/MorphologicalWidthParser.java @ 2821:0a536eb5d668

Added parser for parsing morphological widths. flys-backend/trunk@4238 c6561f87-3c4e-4783-a992-168aeb5c3f6f
author Ingo Weinzierl <ingo.weinzierl@intevation.de>
date Fri, 13 Apr 2012 13:22:54 +0000
parents
children 0d27d02b1208
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line diff
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/flys-backend/src/main/java/de/intevation/flys/importer/parsers/MorphologicalWidthParser.java	Fri Apr 13 13:22:54 2012 +0000
@@ -0,0 +1,123 @@
+package de.intevation.flys.importer.parsers;
+
+import java.math.BigDecimal;
+
+import java.text.NumberFormat;
+import java.text.ParseException;
+
+import java.util.ArrayList;
+import java.util.List;
+import java.util.regex.Matcher;
+import java.util.regex.Pattern;
+
+import org.apache.log4j.Logger;
+
+import de.intevation.flys.importer.ImportMorphWidth;
+import de.intevation.flys.importer.ImportMorphWidthValue;
+import de.intevation.flys.importer.ImportUnit;
+
+
+public class MorphologicalWidthParser extends LineParser {
+
+    private static final Logger log =
+        Logger.getLogger(MorphologicalWidthParser.class);
+
+
+    public static final NumberFormat nf = NumberFormat.getInstance(DEFAULT_LOCALE);
+
+
+    public static final Pattern META_UNIT =
+        Pattern.compile("^Einheit: \\[(.*)\\].*");
+
+
+    protected List<ImportMorphWidth> morphWidths;
+
+    protected ImportMorphWidth current;
+
+
+    public MorphologicalWidthParser() {
+        morphWidths = new ArrayList<ImportMorphWidth>();
+    }
+
+
+    @Override
+    protected void reset() {
+        current = new ImportMorphWidth();
+    }
+
+
+    @Override
+    protected void finish() {
+        if (current != null) {
+            morphWidths.add(current);
+        }
+    }
+
+
+    @Override
+    protected void handleLine(String line) {
+        if (line.startsWith(START_META_CHAR)) {
+            handleMetaLine(stripMetaLine(line));
+        }
+        else {
+            handleDataLine(line);
+        }
+    }
+
+
+    protected void handleMetaLine(String line) {
+        if (handleMetaUnit(line)) {
+            return;
+        }
+        else {
+            log.warn("Unknown meta line: '" + line + "'");
+        }
+    }
+
+
+    protected boolean handleMetaUnit(String line) {
+        Matcher m = META_UNIT.matcher(line);
+
+        if (m.matches()) {
+            String unit = m.group(1);
+
+            current.setUnit(new ImportUnit(unit));
+
+            return true;
+        }
+
+        return false;
+    }
+
+
+    protected void handleDataLine(String line) {
+        String[] vals = line.split(SEPERATOR_CHAR);
+
+        if (vals == null || vals.length < 2) {
+            log.warn("skip invalid data line: '" + line + "'");
+            return;
+        }
+
+        try {
+            BigDecimal km    = new BigDecimal(nf.parse(vals[0]).doubleValue());
+            BigDecimal width = new BigDecimal(nf.parse(vals[1]).doubleValue());
+
+            String desc = vals.length > 2 ? vals[2] : null;
+
+            current.addValue(new ImportMorphWidthValue(
+                km,
+                width,
+                desc
+            ));
+        }
+        catch (ParseException pe) {
+            log.warn("Error while parsing numbers in '" + line + "'");
+        }
+    }
+
+
+    public List<ImportMorphWidth> getMorphologicalWidths() {
+        return morphWidths;
+    }
+}
+// vim:set ts=4 sw=4 si et sta sts=4 fenc=utf8 :

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