--- a/flys-artifacts/src/main/java/de/intevation/flys/utils/DoubleUtil.java	Sun Sep 16 11:40:38 2012 +0000
+++ b/flys-artifacts/src/main/java/de/intevation/flys/utils/DoubleUtil.java	Sun Sep 16 17:55:10 2012 +0000
@@ -1,12 +1,17 @@
 package de.intevation.flys.utils;
 
+import de.intevation.flys.artifacts.math.Linear;
+
+import gnu.trove.TDoubleArrayList;
+
 import java.util.Arrays;
 
-import de.intevation.flys.artifacts.math.Linear;
-
+import org.apache.log4j.Logger;
 
 public class DoubleUtil
 {
+    private static Logger log = Logger.getLogger(DoubleUtil.class);
+
     public static final double DEFAULT_STEP_PRECISION = 1e6;
 
     private DoubleUtil() {
@@ -138,5 +143,39 @@
         Arrays.fill(result, value);
         return result;
     }
+
+    public interface SegmentCallback {
+        void newSegment(double from, double to, double [] values);
+    }
+
+    public static final void parseSegments(
+        String          input,
+        SegmentCallback callback
+    ) {
+        TDoubleArrayList vs = new TDoubleArrayList();
+
+        for (String segmentStr: input.split(":")) {
+            String [] parts = segmentStr.split(";");
+            if (parts.length < 3) {
+                log.warn("invalid segment: '" + segmentStr + "'");
+                continue;
+            }
+            try {
+                double from = Double.parseDouble(parts[0].trim());
+                double to   = Double.parseDouble(parts[1].trim());
+
+                vs.resetQuick();
+
+                for (String valueStr: parts[2].split(",")) {
+                    vs.add(round(Double.parseDouble(valueStr.trim())));
+                }
+
+                callback.newSegment(from, to, vs.toNativeArray());
+            }
+            catch (NumberFormatException nfe) {
+                log.warn("invalid segment: '" + segmentStr + "'");
+            }
+        }
+    }
 }
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