sascha@184: package de.intevation.flys.importer;
sascha@184: 
sascha@184: import java.io.File;
sascha@184: 
sascha@184: import java.util.List;
sascha@184: import java.util.ArrayList;
sascha@184: 
sascha@184: import java.io.IOException;
sascha@184: import java.io.LineNumberReader;
sascha@184: import java.io.FileInputStream;
sascha@184: import java.io.InputStreamReader;
sascha@184: 
sascha@189: import java.math.BigDecimal;
sascha@189: 
sascha@184: import org.apache.log4j.Logger;
sascha@184: 
sascha@184: import de.intevation.flys.utils.FileTools;
sascha@184: 
sascha@184: public class PegelGltParser
sascha@184: {
sascha@186:     private static Logger log = Logger.getLogger(PegelGltParser.class);
sascha@184: 
sascha@184:     public static final String ENCODING = "ISO-8859-1";
sascha@184: 
sascha@184:     public static final String KM = "km:";
sascha@184: 
sascha@184:     protected List<ImportGauge> gauges;
sascha@184: 
sascha@184:     public PegelGltParser() {
sascha@184:         gauges = new ArrayList<ImportGauge>();
sascha@184:     }
sascha@184: 
sascha@184:     public List<ImportGauge> getGauges() {
sascha@184:         return gauges;
sascha@184:     }
sascha@184: 
sascha@184:     public void parse(File file) throws IOException {
sascha@184: 
sascha@184:         File parent = file.getParentFile();
sascha@184: 
sascha@184:         log.info("parsing GLT file '" + file + "'");
sascha@184:         LineNumberReader in = null;
sascha@184:         try {
sascha@184:             in =
sascha@184:                 new LineNumberReader(
sascha@184:                 new InputStreamReader(
sascha@184:                 new FileInputStream(file), ENCODING));
sascha@184: 
sascha@184:             String line = null;
sascha@184:             while ((line = in.readLine()) != null) {
sascha@184:                 if ((line = line.trim()).length() == 0) {
sascha@184:                     continue;
sascha@184:                 }
sascha@184: 
sascha@184:                 int kmPos = line.indexOf(KM);
sascha@184:                 if (kmPos < 0) {
sascha@184:                     log.warn("no gauge found in line " + in.getLineNumber());
sascha@184:                     continue;
sascha@184:                 }
sascha@184: 
sascha@184:                 String gaugeName = line.substring(0, kmPos).trim();
sascha@184:                 log.info("Found gauge '" + gaugeName + "'");
sascha@184: 
sascha@184:                 line = line.substring(kmPos + KM.length()).trim();
sascha@184: 
sascha@184:                 String [] parts = line.split("\\s+");
sascha@184:                 if (parts.length < 4) {
sascha@184:                     log.warn("line " + in.getLineNumber() 
sascha@184:                         + " has not enough columns");
sascha@184:                     continue;
sascha@184:                 }
sascha@184: 
sascha@189:                 BigDecimal from = new BigDecimal(parts[0].replace(",", "."));
sascha@189:                 BigDecimal to   = new BigDecimal(parts[1].replace(",", "."));
sascha@189:                 if (to.compareTo(from) > 0) { 
sascha@189:                     BigDecimal t = from; from = to; to = t; 
sascha@189:                 }
sascha@185:                 ImportRange range = new ImportRange(from, to);
sascha@184:                 File staFile = FileTools.repair(new File(parent, parts[2]));
sascha@184:                 File atFile  = FileTools.repair(new File(parent, parts[3]));
sascha@184: 
sascha@184:                 if (log.isDebugEnabled()) {
sascha@184:                     log.debug("\tfrom: " + from);
sascha@184:                     log.debug("\tto: " + to);
sascha@184:                     log.debug("\tsta: " + staFile);
sascha@184:                     log.debug("\tat: " + atFile);
sascha@184:                 }
sascha@184: 
sascha@185:                 gauges.add(new ImportGauge(range, staFile, atFile));
sascha@184:             }
sascha@184:         }
sascha@184:         finally {
sascha@184:             if (in != null) {
sascha@184:                 in.close();
sascha@184:             }
sascha@184:         }
sascha@184:     }
sascha@184: }
sascha@184: // vim:set ts=4 sw=4 si et sta sts=4 fenc=utf8 :