# HG changeset patch
# User Felix Wolfsteller <felix.wolfsteller@intevation.de>
# Date 1356692341 -3600
# Node ID ccae8b43e527eb75e44fc48e24c6135c573de7a0
# Parent  c6d70560285f7e21112ede02ade38635e269beec
Initial empty version of W80Parser.

diff -r c6d70560285f -r ccae8b43e527 flys-backend/src/main/java/de/intevation/flys/importer/parsers/W80Parser.java
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/flys-backend/src/main/java/de/intevation/flys/importer/parsers/W80Parser.java	Fri Dec 28 11:59:01 2012 +0100
@@ -0,0 +1,171 @@
+package de.intevation.flys.importer.parsers;
+
+import java.util.ArrayList;
+import java.util.HashMap;
+import java.util.Map;
+import java.util.List;
+import java.util.TreeMap;
+
+import java.util.regex.Pattern;
+import java.util.regex.Matcher;
+
+import java.io.File;
+import java.io.IOException;
+
+import org.apache.log4j.Logger;
+
+import de.intevation.flys.importer.XY;
+
+import de.intevation.artifacts.common.utils.FileTools;
+
+
+/**
+ * To create cross-sections, generate: Map<double,list<xy>> from files
+ * in da66 format.
+ */
+public class W80Parser extends LineParser implements CrossSectionParser
+{
+    /** Private logger. */
+    private static Logger logger = Logger.getLogger(W80Parser.class);
+
+    /** Regex to match lines of files in da66 format. */
+    private static final Pattern LINE_PATTERN =
+        Pattern.compile("[\\p{Alnum} ]{20}" + // ID
+                        "[0-9 ]{10} " + // GK-right
+                        "[0-9 ]{10} " + // GK-left
+                        "[0-9 ]{6} " + // date
+                        "[0-9 ]{1} " + // kind of exactness of measurement
+                        "[0-9 ]{7} " + // height
+                        "[0-9 ]{6} " + // date of height
+                        "[0-9 ]{1} " + // kind of exactness of height-measurement
+                        "[0-9 ]{3} " + // kind (only for NIV-points)
+                        "[\\p{Alnum} ]{6} " + // date of point decline
+                        "[\\p{Alnum} ]{8} " + // note for point
+                        "[0-9 ]{2} "  // actuality
+                        );
+
+    // TODO define headers regex, use regex or remove it.
+
+
+    /** The current line to which add points. */
+    private List<XY> currentLine;
+
+
+    /** Data collected so far, last element will be currentLine. */
+    protected Map<Double, List<XY>> data;
+
+
+    /** Trivial constructor. */
+    public W80Parser() {
+        data = new TreeMap<Double, List<XY>>();
+    }
+
+
+    /** Get the description of the cross section parsed. */
+    @Override
+    public String getDescription() {
+        return removeExtension(getFileName());
+    }
+
+
+    /** Get the year of this cross sections measurement. */
+    @Override
+    public Integer getYear() {
+        return null;
+    }
+
+
+    /**
+     * Return the data parsed.
+     * @return map of stations (km) to list of points.
+     */
+    @Override
+    public Map<Double, List<XY>> getData() {
+        return data;
+    }
+
+
+    /** Remove everything after dot from name. */
+    private static final String removeExtension(String name) {
+        int index = name.lastIndexOf('.');
+        return index == -1
+            ? name
+            : name.substring(0, index);
+    }
+
+    public void parseW80s(File root, final Callback callback) {
+
+        // TODO use the removeExtension/guess description and date.
+        FileTools.walkTree(root, new FileTools.FileVisitor() {
+            @Override
+            public boolean visit(File file) {
+                if (file.isFile() && file.canRead()
+                && file.getName().toLowerCase().endsWith(".w80")
+                && (callback == null || callback.accept(file))) {
+                    reset();
+                    try {
+                        parse(file);
+                        logger.info("parsing done");
+                        if (callback != null) {
+                            callback.parsed(W80Parser.this);
+                        }
+                    }
+                    catch (IOException ioe) {
+                        logger.error("IOException while parsing file");
+                        return false;
+                    }
+                }
+                return true;
+            }
+        });
+    }
+
+
+    /** Called before consuming first line of file. */
+    public void reset() {
+        data.clear();
+        currentLine = new ArrayList<XY>();
+    }
+
+
+    /**
+     * Called for each line. Try to extract info from a da66 line.
+     */
+    @Override
+    protected void handleLine(int lineNum, String line) {
+        String pointId = line.substring(0,20);
+        String gkRight = line.substring(20,30);
+        String gkHigh  = line.substring(30,40);
+        String date    = line.substring(40,46);
+        String locType = line.substring(46,47);
+        String height  = line.substring(47,54);
+        String dateH   = line.substring(54,60);
+        String typeH   = line.substring(60,61);
+        String kindH   = line.substring(61,64);
+        String dateDec = line.substring(64,70);
+        String note    = line.substring(70,78);
+        String actual  = line.substring(78);
+    }
+
+
+    /** Called when file is fully consumed. */
+    @Override
+    protected void finish() {
+        logger.info("Parsed " + data.size() + " lines");
+    }
+
+
+    /** Parses files given as arguments. */
+    public static void main(String [] args) {
+
+        W80Parser parser = new W80Parser();
+
+        logger.warn("Start parsing files.");
+        for (String arg: args) {
+            parser.parseW80s(new File(arg), null);
+            logger.warn("Parsing a file.");
+        }
+        logger.error("Finished parsing files.");
+    }
+}
+// vim:set ts=4 sw=4 si et sta sts=4 fenc=utf8 :