Application: gvSIG desktop

/*

 * Cresques Mapping Suite. Graphic Library for constructing mapping applications.

 *

 * Copyright (C) 2004-5.

 *

 * This program is free software; you can redistribute it and/or

 * modify it under the terms of the GNU General Public License

 * as published by the Free Software Foundation; either version 2

 * of the License, or (at your option) any later version.

 *

 * This program 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 General Public License for more details.

 *

 * You should have received a copy of the GNU General Public License

 * along with this program; if not, write to the Free Software

 * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307,USA.

 *

 * For more information, contact:

 *

 * cresques@gmail.com

 */

package org.cresques.io;

import org.cresques.cts.ICoordTrans;

import org.cresques.cts.IProjection;

import org.cresques.px.IObjList;

import org.cresques.px.gml.Feature;

import org.cresques.px.gml.FeatureCollection;

import org.cresques.px.gml.Geometry;

import org.cresques.px.gml.LineString;

import org.cresques.px.gml.MultiGeometry;

import org.cresques.px.gml.MultiPolygon;

import org.cresques.px.gml.Point;

import org.cresques.px.gml.Polygon;

import java.io.BufferedReader;

import java.io.FileNotFoundException;

import java.io.FileReader;

import java.io.IOException;

import java.io.InputStream;

import java.io.InputStreamReader;

import java.io.Reader;

import java.util.Hashtable;

/**

 * Cargador de ficheros .gml de JUMP de vivid solutions.

 * Actualmente lee un subconjunto de datos. Datos de prueba generados por JUMP.

 * @author "Luis W. Sevilla" <sevilla_lui@gva.es>

 */

public class GmlFile extends GeoFile {

    final static int NOWHERE = -1;

    final static int INCOORDINATES = 0;

    final static int INPROPERTY = 1;

    final static String LT = "<";

    final static String GT = ">";

    int where = NOWHERE;

    Hashtable tipos = new Hashtable();

    FeatureCollection collection = null;

    Feature activeFeature = null;

    Geometry activeGeometry = null;

    Geometry activeMember = null;

    String buf = null;

    String propName = null;

    long lineNr = 0;

    BufferedReader fi;

    long l = 0;

    int count = 0;

    /**

     * Constructor de la clase Gml

     *

     */

    public GmlFile(IProjection proj, String name) {

        super(proj, name);

    }

    /**

     * Carga un .gml

     * @param name nombre del fichero

     */

    public GeoFile load() {

        System.out.println("Cargando " + name + " ...");

        try {

            if (FileFolder.isUrl(name)) {

                ZipFileFolder zFolder = new ZipFileFolder(name);

                InputStream is = zFolder.getInputStream(name);

                return load(new InputStreamReader(is));

            } else {

                return load(new FileReader(name));

            }

        } catch (FileNotFoundException e) {

            e.printStackTrace();

        } catch (IOException ie) {

            System.err.println("ERROR." + l + "lineas leidas");

            ie.printStackTrace();

        }

        return this;

    }

    public GeoFile load(Reader fr) {

        try {

            fi = new BufferedReader(fr);

            while ((buf = fi.readLine()) != null) {

                //System.out.println(buf);

                l++;

                preParseLine(buf.trim());

            }

            fi.close();

            System.out.println("'" + name + "' cargado. (" + l + " l?neas).");

        } catch (FileNotFoundException e) {

            e.printStackTrace();

        } catch (IOException ie) {

            System.err.println("ERROR." + l + "lineas leidas");

            ie.printStackTrace();

        }

        this.lineNr = l;

        extent.add(collection.getExtent());

        return this;

    }

    /**

     * Analiza una l?nea del fichero .gml

     * @param l linea que analiza

     */

    void preParseLine(String l) {

        String line1;

        //System.err.println("pre0: '"+l+"'");

        //if (count++>500) System.exit(1);

        if (l.indexOf(LT) > 0) {

            line1 = l.substring(0, l.indexOf(LT)).trim();

            l = l.substring(l.indexOf(LT)).trim();

            //System.err.println("pre1: '"+line1+"', '"+l+"'");

            preParseLine(line1);

            preParseLine(l);

            return;

        }

        if ((l.indexOf(GT) >= 0) && (l.indexOf(GT) != (l.length() - 1))) {

            line1 = l.substring(0, l.indexOf(GT) + 1).trim();

            l = l.substring(l.indexOf(GT) + 1).trim();

            //System.err.println("pre2: '"+line1+"', '"+l+"'");

            preParseLine(line1);

            preParseLine(l);

            return;

        }

        parseToken(l);

    }

    /**

     * Analiza un token

     * @param l

     */

    void parseToken(String l) {

        String token = null;

        //System.err.println(l);

        if ((l.length() > 0) && (l.substring(0, 1).compareTo(LT) == 0)) {

            token = l.substring(1, l.indexOf(GT));

            if (token.compareTo("gml:coordinates") == 0) {

                where = INCOORDINATES;

            } else if (token.compareTo("/gml:coordinates") == 0) {

                where = NOWHERE;

            } else if (token.compareTo("gml:LinearRing") == 0) {

            } else if (token.compareTo("/gml:LinearRing") == 0) {

            } else if (token.compareTo("gml:Polygon") == 0) {

                activeMember = new Polygon();

                if (activeGeometry == null) {

                    activeGeometry = activeMember;

                }

            } else if (token.compareTo("/gml:Polygon") == 0) {

                if (activeGeometry.getClass() == MultiPolygon.class) {

                    ((MultiPolygon) activeGeometry).add(activeMember);

                }

                activeMember = null;

            } else if (token.compareTo("gml:LineString") == 0) {

                activeMember = new LineString();

                if (activeGeometry == null) {

                    activeGeometry = activeMember;

                }

            } else if (token.compareTo("/gml:LineString") == 0) {

                if (activeGeometry.getClass() == MultiGeometry.class) {

                    ((MultiGeometry) activeGeometry).add(activeMember);

                }

                activeMember = null;

            } else if (token.compareTo("gml:outerBoundaryIs") == 0) {

            } else if (token.compareTo("/gml:outerBoundaryIs") == 0) {

            } else if (token.compareTo("featureCollection") == 0) {

                collection = new FeatureCollection(proj);

            } else if (token.compareTo("/featureCollection") == 0) {

            } else if (token.compareTo("feature") == 0) {

                System.err.println("feature");

                activeFeature = new Feature();

            } else if (token.compareTo("/feature") == 0) {

                collection.add(activeFeature);

                activeFeature = null;

            } else if (token.compareTo("geometry") == 0) {

            } else if (token.compareTo("/geometry") == 0) {

                activeFeature.setGeometry(activeGeometry);

                activeGeometry = null;

                activeMember = null;

            } else if (token.compareTo("gml:Point") == 0) {

                activeMember = new Point();

                if (activeGeometry == null) {

                    activeGeometry = activeMember;

                }

            } else if (token.compareTo("/gml:Point") == 0) {

                activeMember = null;

            } else if (token.compareTo("gml:MultiPolygon") == 0) {

                activeGeometry = new MultiPolygon();

            } else if (token.compareTo("/gml:MultiPolygon") == 0) {

            } else if (token.compareTo("gml:MultiPoint") == 0) {

                //activeGeometry = new MultiPoint();

            } else if (token.compareTo("/gml:MultiPoint") == 0) {

            } else if (token.compareTo("gml:polygonMember") == 0) {

            } else if (token.compareTo("/gml:polygonMember") == 0) {

            } else if (token.compareTo("gml:innerBoundaryIs") == 0) {

                ((Polygon) activeMember).setInnerBoundary();

            } else if (token.compareTo("/gml:innerBoundaryIs") == 0) {

            } else if (token.startsWith("property")) {

                where = INPROPERTY;

                propName = l.substring(l.indexOf("\"") + 1);

                propName = propName.substring(0, propName.indexOf("\""));

            } else if (token.startsWith("/property")) {

                where = NOWHERE;

                Integer tipo = new Integer(0);

                if (tipos.containsKey(token)) {

                    tipo = (Integer) tipos.get(token);

                }

                tipos.put(token, new Integer(tipo.intValue() + 1));

            }

        } else {

            switch (where) {

            case INPROPERTY:

                activeFeature.setProp(propName, l);

                break;

            case INCOORDINATES:

                String[] txt = l.split(",");

                double[] pt = new double[3];

                for (int i = 0; i < txt.length; i++)

                    pt[i] = Double.parseDouble(txt[i]);

                activeMember.add(proj.createPoint(pt[0], pt[1]));

                break;

            }

        }

    }

    /**

     * Obtiene la lista de features.

     */

    public IObjList getObjects() {

        return collection;

    }

    /**

     * Saca las estadisticas del fichero por stdout.

     */

    public void pintaStats() {

        /*                print "GML file '%s': %d lineas" % (self.name, self.lineNr)

                        print "GML Tokens:"

                        kk = self.tipos.keys()

                        kk.sort()

                        for k in kk:

                                print k, self.tipos[k]

                        print "\nTotal Coordenadas %d\n" % geo.Polygon.numCoords

                        #print "\nExtent: min=(%.2f,%df), max=(%.2f,%.2f)" % (self.minX, self.minY, self.maxX, self.maxY)

                        print "\nExtent: ", (self.minX, self.minY, self.maxX, self.maxY)*/

        String txt = "GML file: '" + name + "': " + lineNr + " l?neas\n";

        txt += ("\nGML file: Total Coordenadas: " + Polygon.pointNr + "\n");

        txt += ("GML file: Total features: " + collection.size() + "\n");

        txt += ("GML file: " + collection.getExtent() + "\n");

        txt += ("GML file: " + ((Feature) collection.get(0)).getExtent());

        System.out.println(txt);

    }

    public void reProject(ICoordTrans rp) {

        collection.reProject(rp);

        setProjection(rp.getPDest());

    }

    /* (non-Javadoc)

     * @see org.cresques.io.GeoFile#close()

     */

    public void close() {

        // TODO Auto-generated method stub

    }

}