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 java.io.BufferedInputStream;

import java.io.IOException;

import java.io.InputStream;

import java.net.MalformedURLException;

import java.net.URL;

import org.cresques.px.Extent;

/**

 * Consulta para un servidor de mapas.

 * @author Luis W. Sevilla (sevilla_lui@gva.es)

 */

public abstract class MapServerClient implements Extent.Has {

        public static final int MAXBUFSIZE = 1024*1024; 

    BufferedInputStream bufIn = null;

    byte [] buffer;

    int bufPos;

        String serverName;

        protected String urlBase = null;

        protected long xMin, xMax, yMin, yMax;

        protected int ancho, alto;

    public boolean echo = false;

    private Extent extent = null;

    private int maxViewWidth = 1500;

    private int maxViewHeight = 1500;

    private float minTimeBetweenQuerys = 0;

        public MapServerClient(String serverName) {

                this.serverName = serverName;

        }

        public String getName() { return serverName; }

        public byte [] getBuffer() { return buffer; } 

        public void setView(long xMin, long yMin, long xMax, long yMax) {

                this.xMin = xMin; this.xMax = xMax;

                this.yMax = yMax; this.yMin = yMin;

        }

        public void setViewSize( int w, int h) {

                ancho = w; alto = h;

        }

        /**

         * Pone el tama?o m?ximo de la vista. Solicitando una vista m?s

         * grande que esta al servidor dar? error (y no im?genes)  :-(

         * @param w        ancho

         * @param h alto

         */

        public void setMaxViewSize( int w, int h) {

                maxViewWidth = w; maxViewHeight = h;

        }

        public Extent getViewExtent() {

                return new Extent(xMin, yMax, xMax, yMin);

        }

        public void setExtent(Extent e) { extent = e; }

        public Extent getExtent() { return extent; }

        abstract public String getUrl();

    public void get() throws Exception {

            get(getUrl());

    }

    public void get(String address) throws Exception {

            bufPos = 0;

            buffer = new byte[MAXBUFSIZE];

        try {

            // Check to see that a command parameter was entered

            // Create an URL instance

            URL url = new URL(address);

            // Get an input stream for reading

            InputStream in = url.openStream();

            // Create a buffered input stream for efficency

            bufIn = new BufferedInputStream(in);

            // Repeat until end of file

            int data;

            for (bufPos = 0; (data = bufIn.read()) != -1; bufPos++) {

                buffer[bufPos] = (byte) data;

                if ( echo ) System.out.println (data);

            }

                byte [] buf = new byte[bufPos];

                for (int i=0; i<bufPos; i++) buf[i] = buffer[i];

                buffer = buf;

                System.out.println(bufPos+" bytes leidos.");

                bufIn.close();

            in.close();

        } catch (MalformedURLException mue) {

            System.err.println ("Invalid URL");

        } catch (IOException ioe) {

            System.err.println ("I/O Error - " + ioe);

        }

    }

}