com.bce.gis.io.zweidm.SmsParser.java Source code

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/*----------------    FILE HEADER KALYPSO ------------------------------------------
 *
 *  This file is part of kalypso.
 *  Copyright (C) 2004 by:
 *
 *  Technical University Hamburg-Harburg (TUHH)
 *  Institute of River and coastal engineering
 *  Denickestrae 22
 *  21073 Hamburg, Germany
 *  http://www.tuhh.de/wb
 *
 *  and
 *
 *  Bjoernsen Consulting Engineers (BCE)
 *  Maria Trost 3
 *  56070 Koblenz, Germany
 *  http://www.bjoernsen.de
 *
 *  This library is free software; you can redistribute it and/or
 *  modify it under the terms of the GNU Lesser General Public
 *  License as published by the Free Software Foundation; either
 *  version 2.1 of the License, or (at your option) any later version.
 *
 *  This library is distributed in the hope that it will be useful,
 *  but WITHOUT ANY WARRANTY; without even the implied warranty of
 *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
 *  Lesser General Public License for more details.
 *
 *  You should have received a copy of the GNU Lesser General Public
 *  License along with this library; if not, write to the Free Software
 *  Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
 *
 *  Contact:
 *
 *  E-Mail:
 *  belger@bjoernsen.de
 *  schlienger@bjoernsen.de
 *  v.doemming@tuhh.de
 *
 *  ---------------------------------------------------------------------------*/
package com.bce.gis.io.zweidm;

import java.io.BufferedInputStream;
import java.io.IOException;
import java.io.InputStream;
import java.io.InputStreamReader;
import java.io.LineNumberReader;
import java.io.Reader;
import java.net.URL;
import java.util.ArrayList;
import java.util.List;
import java.util.regex.Matcher;
import java.util.regex.Pattern;

import org.apache.commons.io.IOUtils;
import org.apache.commons.lang3.ArrayUtils;
import org.apache.commons.lang3.StringUtils;
import org.eclipse.core.runtime.Assert;
import org.eclipse.core.runtime.IProgressMonitor;
import org.eclipse.core.runtime.IStatus;
import org.kalypso.commons.java.net.UrlUtilities;
import org.kalypso.contribs.eclipse.core.runtime.IStatusCollector;
import org.kalypso.contribs.eclipse.core.runtime.ProgressInputStream;
import org.kalypso.contribs.eclipse.core.runtime.StatusCollector;
import org.kalypso.gml.processes.KalypsoGmlProcessesPlugin;
import org.kalypso.gml.processes.i18n.Messages;

/**
 * Provides algorithm to convert from a SMS model to a 1d2d discretisation model
 *
 * @author Thomas Jung
 */
public class SmsParser {
    private final IStatusCollector m_stati = new StatusCollector(KalypsoGmlProcessesPlugin.PLUGIN_ID);

    private final ISmsModel m_model;

    private static final Pattern ELEMENT_LINE_PATTERN_E3T = Pattern.compile(
            "E3T\\s*([0-9]+)\\s+([\\+\\-]?[0-9]+)\\s+([\\+\\-]?[0-9]+)\\s+([\\+\\-]?[0-9]+)\\s+([\\+\\-]?[0-9]+).*"); //$NON-NLS-1$

    private static final Pattern ELEMENT_LINE_PATTERN_E4Q = Pattern.compile(
            "E4Q\\s*([0-9]+)\\s+([\\+\\-]?[0-9]+)\\s+([\\+\\-]?[0-9]+)\\s+([\\+\\-]?[0-9]+)\\s+([\\+\\-]?[0-9]+)\\s+([\\+\\-]?[0-9]+).*"); //$NON-NLS-1$

    public SmsParser(final int srid) {
        m_model = new SmsModel(srid);
    }

    public SmsParser(final ISmsModel model) {
        m_model = model;
    }

    public IStatus parse(final URL url, final IProgressMonitor monitor) throws IOException {
        InputStream is = null;
        try {
            final long contentLength = UrlUtilities.getContentLength(url);
            is = new ProgressInputStream(new BufferedInputStream(url.openStream()), contentLength, monitor);

            parse(is);

            is.close();

            final String okMessage = String.format(Messages.getString("SmsParser_0"), url.toExternalForm()); //$NON-NLS-1$
            final String problemMessage = String.format(Messages.getString("SmsParser_1"), url.toExternalForm()); //$NON-NLS-1$
            return m_stati.asMultiStatusOrOK(problemMessage, okMessage);
        } finally {
            IOUtils.closeQuietly(is);
        }
    }

    private void parse(final InputStream inputStream) throws IOException {
        Assert.isNotNull(inputStream);
        parse(new InputStreamReader(inputStream));
    }

    private void parse(final Reader reader) throws IOException {
        Assert.isNotNull(reader);

        final LineNumberReader lnReader = new LineNumberReader(reader);
        for (String line = lnReader.readLine(); line != null; line = lnReader.readLine()) {
            try {
                if (line.startsWith("ND")) //$NON-NLS-1$
                    interpreteNodeLine(line, lnReader);
                else if (line.startsWith("E3T")) //$NON-NLS-1$
                    interpreteE3TLine(line, lnReader);
                else if (line.startsWith("E4Q")) //$NON-NLS-1$
                    interpreteE4QLine(line, lnReader);
            } catch (final NumberFormatException e) {
                addStatus(lnReader, IStatus.ERROR, Messages.getString("SmsParser_2"), e.getLocalizedMessage()); //$NON-NLS-1$
            }

            /* Abort after too many problems, */
            final int maxProblemCount = 100;
            if (m_stati.size() > maxProblemCount) {
                m_stati.add(IStatus.ERROR, Messages.getString("SmsParser_3")); //$NON-NLS-1$
                return;
            }
        }
    }

    private void interpreteNodeLine(final String line, final LineNumberReader lnReader) {
        final String[] nodeLineStrings = StringUtils.split(line);

        if (!"ND".equals(nodeLineStrings[0])) //$NON-NLS-1$
        {
            addStatus(lnReader, IStatus.WARNING, Messages.getString("SmsParser_5")); //$NON-NLS-1$
            return;
        }

        final int id = Integer.parseInt(nodeLineStrings[1]);
        final double easting = Double.parseDouble(nodeLineStrings[2]);
        final double northing = Double.parseDouble(nodeLineStrings[3]);
        double elevation = Double.parseDouble(nodeLineStrings[4]);
        // TODO: the value '-9999' represents the NODATA-value, should be discussed
        if (elevation == -9999)
            elevation = Double.NaN;

        m_model.addNode(line, id, easting, northing, elevation);
    }

    private void interpreteE3TLine(final String line, final LineNumberReader lnReader) {
        final Matcher lineMatcher = ELEMENT_LINE_PATTERN_E3T.matcher(line);
        if (!lineMatcher.matches()) {
            addStatus(lnReader, IStatus.WARNING, Messages.getString("SmsParser_6")); //$NON-NLS-1$
            return;
        }

        final List<Integer> nodeIdList = new ArrayList<>();

        final int id = Integer.parseInt(lineMatcher.group(1));

        nodeIdList.add(Integer.parseInt(lineMatcher.group(2)));
        nodeIdList.add(Integer.parseInt(lineMatcher.group(3)));
        nodeIdList.add(Integer.parseInt(lineMatcher.group(4)));

        final Integer[] nodes = nodeIdList.toArray(new Integer[nodeIdList.size()]);

        final int roughnessClassID = Integer.parseInt(lineMatcher.group(5));
        m_model.addElement(line, id, nodes, roughnessClassID);
    }

    private void interpreteE4QLine(final String line, final LineNumberReader lnReader) {
        final Matcher elementMatcher = ELEMENT_LINE_PATTERN_E4Q.matcher(line);
        if (!elementMatcher.matches()) {
            addStatus(lnReader, IStatus.WARNING, Messages.getString("SmsParser_7")); //$NON-NLS-1$
            return;
        }

        final List<Integer> nodeIdList = new ArrayList<>();

        final int id = Integer.parseInt(elementMatcher.group(1));

        nodeIdList.add(Integer.parseInt(elementMatcher.group(2)));
        nodeIdList.add(Integer.parseInt(elementMatcher.group(3)));
        nodeIdList.add(Integer.parseInt(elementMatcher.group(4)));
        nodeIdList.add(Integer.parseInt(elementMatcher.group(5)));

        final Integer[] nodes = nodeIdList.toArray(new Integer[nodeIdList.size()]);

        final int roughnessClassID = Integer.parseInt(elementMatcher.group(6));
        m_model.addElement(line, id, nodes, roughnessClassID);
    }

    private void addStatus(final LineNumberReader lnReader, final int severity, final String message,
            final Object... args) {
        final String format = Messages.getString("SmsParser_8") + message; //$NON-NLS-1$

        final Object[] arguments = ArrayUtils.addAll(new Object[] { lnReader.getLineNumber() }, args);

        final String msg = String.format(format, arguments);

        m_stati.add(severity, msg);
    }

    public ISmsModel getModel() {
        return m_model;
    }
}