svn-gvsig-desktop / branches / v2_0_0_prep / libraries / libRaster / src / org / gvsig / raster / dataset / io / rmf / ClassSerializer.java @ 27512
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/* gvSIG. Sistema de Informaci?n Geogr?fica de la Generalitat Valenciana
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*
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* Copyright (C) 2007 IVER T.I. and Generalitat Valenciana.
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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* as published by the Free Software Foundation; either version 2
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* of the License, or (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307,USA.
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*/
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package org.gvsig.raster.dataset.io.rmf; |
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import java.awt.geom.AffineTransform; |
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import java.awt.geom.Point2D; |
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import java.io.IOException; |
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import org.cresques.impl.cts.ProjectionPool; |
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import org.gvsig.raster.datastruct.Extent; |
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import org.gvsig.raster.datastruct.ViewPortData; |
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import org.kxml2.io.KXmlParser; |
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import org.xmlpull.v1.XmlPullParserException; |
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/**
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* Clase de la que debe heredar cualquier clase que convierta objetos a XML
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* para ser guardados en ficheros rmf.
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*
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* 23-abr-2007
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* @author Nacho Brodin (nachobrodin@gmail.com)
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*/
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public abstract class ClassSerializer implements IRmfBlock { |
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/**
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* Parsea un tag con un String como texto de la forma \<TAG\>String\</TAG\>
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* @param parser KXmlParser
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* @param parseableTag cadena de texto con el nombre del tag
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* @param errorTags Lista de tags que interrumpiran el proceso si son encontrados
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* @return valor double recuperado
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* @throws XmlPullParserException
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* @throws IOException
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* @throws ParsingException
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*/
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protected String parserString(KXmlParser parser, String parseableTag, String[] errorTags) throws XmlPullParserException, IOException, ParsingException { |
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String value = null; |
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boolean end = false; |
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boolean tagOk = false; |
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int tag = parser.next();
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while (!end) {
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switch (tag) {
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case KXmlParser.END_DOCUMENT:
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if (value != null) |
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return value;
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throw new ParsingException("No se ha encontrado el parametro " + parseableTag + " en el RMF"); |
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case KXmlParser.START_TAG:
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if (parser.getName() != null) { |
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if (errorTags != null) |
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for (int i = 0; i < errorTags.length; i++) |
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if (parser.getName().compareTo(errorTags[i]) == 0) |
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return null; |
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if (parser.getName().compareTo(parseableTag) == 0) |
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tagOk = true;
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} |
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break;
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case KXmlParser.END_TAG:
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if (parser.getName().compareTo(parseableTag) == 0) |
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end = true;
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break;
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case KXmlParser.TEXT:
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if (tagOk) {
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value = parser.getText(); |
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tagOk = false;
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} |
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break;
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} |
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if (!end)
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tag = parser.next(); |
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} |
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return value;
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} |
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/**
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* Parsea un bloque que representa un Extent con la forma \<Bbox\><BR> \<Px\>-245.41842857142848\</Px\><BR> \<Py\>1783.3830816326529\</Py\><BR> \<WCWidth\>500.09399999999994\</WCWidth\><BR> \<WCHeight\>324.72771428571446\</WCHeight\><BR> \</Bbox\><BR>
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* @param gp
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* @param parser
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* @param parseableTag Tag principal del Extent
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* @param bbox lista de 4 elementos que representa los 4 tags minx, maxy,
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* ancho y alto
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* @throws NumberFormatException
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* @throws XmlPullParserException
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* @throws IOException
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* @throws ParsingException
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*/
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public Extent parseBoundingBox(KXmlParser parser, String parseableTag, String[] bbox) throws NumberFormatException, XmlPullParserException, IOException, ParsingException { |
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boolean end = false; |
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boolean tagOk = false; |
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int tag = parser.next();
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Extent ext = null;
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while (!end) {
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switch (tag) {
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case KXmlParser.START_TAG:
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if (parser.getName() != null) |
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if (parser.getName().compareTo(parseableTag) == 0) |
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tagOk = true;
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break;
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case KXmlParser.END_TAG:
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if (parser.getName().compareTo(parseableTag) == 0) |
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end = true;
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break;
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case KXmlParser.TEXT:
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if (tagOk) {
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double x = Double.valueOf(parserString(parser, bbox[0], null)).doubleValue(); |
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double y = Double.valueOf(parserString(parser, bbox[1], null)).doubleValue(); |
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double w = Double.valueOf(parserString(parser, bbox[2], null)).doubleValue(); |
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double h = Double.valueOf(parserString(parser, bbox[3], null)).doubleValue(); |
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ext = new Extent(x, y, x + w, y - h);
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} |
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tagOk = false;
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break;
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} |
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if (!end)
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tag = parser.next(); |
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} |
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return ext;
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} |
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/**
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* Parsea un bloque correspondiente a un punto con la forma
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* \<Pdim\><BR>
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* \<Width\>140.0\</Width\><BR>
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* \<Height\>140.0\</Height\><BR>
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* \</Pdim\><BR>
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* @param gp
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* @param parser
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* @param parseableTag
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* @throws NumberFormatException
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* @throws XmlPullParserException
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* @throws IOException
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* @throws ParsingException
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*/
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public Point2D parsePoint2D(KXmlParser parser, String parseableTag, String[] points) throws NumberFormatException, XmlPullParserException, IOException, ParsingException { |
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boolean end = false; |
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boolean tagOk = false; |
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Point2D dim = null; |
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int tag = parser.next();
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while (!end) {
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switch (tag) {
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case KXmlParser.START_TAG:
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if (parser.getName() != null) |
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if (parser.getName().compareTo(parseableTag) == 0) |
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tagOk = true;
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break;
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case KXmlParser.END_TAG:
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if (parser.getName().compareTo(parseableTag) == 0) |
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end = true;
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break;
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case KXmlParser.TEXT:
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if (tagOk) {
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double x = Double.valueOf(parserString(parser, points[0], null)).doubleValue(); |
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double y = Double.valueOf(parserString(parser, points[1], null)).doubleValue(); |
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dim = new Point2D.Double(x, y); |
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tagOk = false;
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} |
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break;
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} |
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if (!end)
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tag = parser.next(); |
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} |
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return dim;
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} |
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/**
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* Parsea un viewport contenido en un punto de control
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* @param gp
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* @param parser
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* @param parseableTag Tag correspondiente a la cabecera del viewport
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* @param bbox lista de tags correspondientes al extent. El primero ser? la cabecera y los siguientes cuatro minx, maxy, ancho y alto
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* @param size tags del tama?o en pixeles. El primero ser? la cabecera y los siguientes dos ancho y alto
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* @param proj tag de la proyecci?n
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* @throws XmlPullParserException
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* @throws IOException
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* @throws ParsingException
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*/
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public ViewPortData parseViewPort(KXmlParser parser, String parseableTag, String[] bbox, String[] size, String proj) throws XmlPullParserException, IOException, ParsingException { |
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boolean end = false; |
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boolean begin = true; |
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ViewPortData vp = new ViewPortData();
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vp.mat = new AffineTransform(); |
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int tag = parser.next();
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while (!end) {
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switch (tag) {
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case KXmlParser.START_TAG:
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if (parser.getName() != null) |
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if (parser.getName().compareTo(parseableTag) == 0) { |
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String project = parserString(parser, proj, null); |
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Extent ext = parseBoundingBox(parser, bbox[0], new String[] { bbox[1], bbox[2], bbox[3], bbox[4] }); |
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Point2D dim = parsePoint2D(parser, size[0], new String[] { size[1], size[2] }); |
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vp.setExtent(ext); |
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vp.pxSize = new Point2D.Double(dim.getX(), dim.getY()); |
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if (project != null && project != "") |
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vp.setProjection(new ProjectionPool().get(project));
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begin = false;
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} else if (begin) |
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return null; |
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break;
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case KXmlParser.END_TAG:
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if (parser.getName().compareTo(parseableTag) == 0) |
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end = true;
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break;
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case KXmlParser.TEXT:
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break;
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} |
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if (!end)
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tag = parser.next(); |
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} |
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return vp;
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} |
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/**
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* Convierte una lista de valores en un solo String en un array de enteros. El
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* String debe representar una lista de numeros separados por espacios.
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* <P>
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* String v = "4 5 65 2 1"
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* </P>
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* <P>
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* Se converir?a en:
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* </P>
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* <P>
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* int[] i = new int[]{4, 5, 65, 2, 1};
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* </P>
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* @param list Cadena con la lista de valores
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* @return Array de valores long
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* @throws XmlPullParserException
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* @throws IOException
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*/
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protected int[] convertStringInIntArray(String list) throws XmlPullParserException, IOException { |
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String[] sValues = list.split(" "); |
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int[] iValues = new int[sValues.length]; |
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for (int i = 0; i < sValues.length; i++) |
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try {
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iValues[i] = Integer.parseInt(sValues[i]);
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} catch (NumberFormatException e) { |
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// iValues[i] vale cero
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} |
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return iValues;
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} |
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/**
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* Convierte una lista de valores en un solo String en un array de double. El
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* String debe representar una lista de numeros separados por espacios.
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* <P>
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* String v = "4.2 5 65.5 2 1"
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* </P>
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* <P>
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* Se converir?a en:
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* </P>
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* <P>
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* double[] i = new double[]{4.2, 5, 65.5, 2, 1};
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* </P>
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* @param list Cadena con la lista de valores
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* @return Array de valores double
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* @throws XmlPullParserException
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* @throws IOException
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*/
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protected double[] convertStringInDoubleArray(String list) throws XmlPullParserException, IOException { |
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String[] sValues = list.split(" "); |
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double[] dValues = new double[sValues.length]; |
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for (int i = 0; i < sValues.length; i++) |
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try {
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dValues[i] = Double.parseDouble(sValues[i]);
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} catch (NumberFormatException e) { |
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// dValues[i] vale cero
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} |
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return dValues;
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} |
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/**
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* A?ade al buffer la propiedad (String) especificada en los par?metros
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* @param b Buffer
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* @param prop Nombre de la propiedad (Tag)
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* @param value Valor de la propiedad
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*/
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public void putProperty(StringBuffer b, String prop, String value, int level) { |
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for (int i = 0; i < level; i++) |
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b.append("\t");
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b.append("<" + prop + ">"); |
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b.append(value); |
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b.append("</" + prop + ">\n"); |
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} |
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/**
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* A?ade al buffer la propiedad (int) especificada en los par?metros
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* @param b Buffer
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* @param prop Nombre de la propiedad (Tag)
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* @param value Valor de la propiedad
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*/
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public void putProperty(StringBuffer b, String prop, int value, int level) { |
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putProperty(b, prop, String.valueOf(value), level);
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} |
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/**
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* A?ade al buffer la propiedad (double) especificada en los par?metros
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* @param b Buffer
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* @param prop Nombre de la propiedad (Tag)
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* @param value Valor de la propiedad
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*/
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public void putProperty(StringBuffer b, String prop, double value, int level) { |
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putProperty(b, prop, String.valueOf(value), level);
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} |
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} |