svn-gvsig-desktop / branches / v02_desarrollo / libraries / sld / temp / org.gvsig.sldsupport.lib.impl / src / main / java / org / gvsig / sldsupport / impl / sld / handler / Handler.java @ 40827
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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) 2004 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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* For more information, contact:
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*
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* Generalitat Valenciana
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* Conselleria d'Infraestructures i Transport
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* Av. Blasco Ib��ez, 50
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* 46010 VALENCIA
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* SPAIN
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*
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* +34 963862235
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* gvsig@gva.es
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* www.gvsig.gva.es
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*
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* or
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*
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* IVER T.I. S.A
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* Salamanca 50
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* 46005 Valencia
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* Spain
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*
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* +34 963163400
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* dac@iver.es
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*/
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package org.gvsig.sldsupport.impl.sld.handler; |
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import java.io.File; |
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import java.io.FileOutputStream; |
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import java.io.IOException; |
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import java.io.InputStream; |
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import java.io.OutputStream; |
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import java.io.OutputStreamWriter; |
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import java.util.ArrayList; |
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import java.util.HashMap; |
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import java.util.List; |
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import java.util.Map; |
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import org.gvsig.sldsupport.exception.InvalidSLDObjectException; |
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import org.gvsig.sldsupport.exception.SLDException; |
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import org.gvsig.sldsupport.exception.SLDReadException; |
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import org.gvsig.sldsupport.exception.UnsupportedSLDObjectException; |
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import org.gvsig.sldsupport.exception.UnsupportedSLDVersionException; |
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import org.gvsig.sldsupport.impl.parser.ExtendedKXmlParser; |
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import org.gvsig.sldsupport.impl.sld.parsing.FeatureStyleElement; |
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import org.gvsig.sldsupport.impl.sld.parsing.NamedLayerElement; |
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import org.gvsig.sldsupport.impl.sld.parsing.UserLayerElement; |
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import org.gvsig.sldsupport.impl.sld.parsing.symbol.SymbolElement; |
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import org.gvsig.sldsupport.impl.util.SLDUtils; |
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import org.gvsig.sldsupport.impl.util.XmlBuilder; |
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import org.gvsig.sldsupport.sld.SLDObject; |
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import org.gvsig.sldsupport.sld.SLDRoot; |
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import org.gvsig.sldsupport.sld.SLDTags; |
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import org.gvsig.sldsupport.sld.layer.SLDLayer; |
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import org.gvsig.sldsupport.sld.layer.SLDNamedLayer; |
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import org.gvsig.sldsupport.sld.layer.SLDUserLayer; |
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import org.gvsig.sldsupport.sld.style.SLDFeatureStyle; |
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import org.gvsig.sldsupport.sld.symbol.SLDSymbol; |
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import org.kxml2.io.KXmlParser; |
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import org.xmlpull.v1.XmlPullParser; |
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import org.xmlpull.v1.XmlPullParserException; |
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public class Handler { |
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private static List<String> versions = new ArrayList<String>(); |
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static {
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versions.add("1.0.0");
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versions.add("1.1.0");
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} |
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public Handler() { |
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} |
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public static SLDObject parse(InputStream inStream, String encoding, String version) |
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throws XmlPullParserException, IOException, SLDException { |
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int tag;
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XmlPullParser parser = new ExtendedKXmlParser();
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parser.setInput(inStream, encoding); |
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tag = parser.getEventType(); |
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if (tag == XmlPullParser.START_DOCUMENT) {
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parser.nextTag(); |
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parser.require(KXmlParser.START_TAG, null, SLDTags.SLD_ROOT);
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// Now we are in root
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} else {
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if (tag != XmlPullParser.START_TAG) {
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throw new IOException( |
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"Misplaced input stream (it's not before opening tag)");
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} |
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} |
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String name = parser.getName();
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String v = null; |
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if (name.compareToIgnoreCase(SLDTags.SLD_ROOT) == 0) { |
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v = parser.getAttributeValue(null, SLDTags.VERSION_ATTR);
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if (v == null) { |
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throw new SLDReadException( |
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"Version attribute is missing in " + SLDTags.SLD_ROOT);
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} |
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SLDRoot root = parseRoot(parser, v); |
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tag = parser.getEventType(); |
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// Must be end-document
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if (tag != KXmlParser.END_DOCUMENT) {
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throw new SLDReadException( |
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"Expected end of document after closing '"
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+ SLDTags.SLD_ROOT + "' tag");
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} |
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return root;
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} else {
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if (name.compareToIgnoreCase(SLDTags.FEATURESTYLE) == 0 |
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|| name.compareToIgnoreCase(SLDTags.FEATURETYPESTYLE) == 0) {
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/*
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* This line is out of the SLD standard
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*/
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v = parser.getAttributeValue(null, SLDTags.VERSION_ATTR);
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return parseFeatureStyle(parser, v);
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} else {
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if (name.compareToIgnoreCase(SLDTags.LINESYMBOLIZER) == 0 |
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|| name.compareToIgnoreCase(SLDTags.POLYGONSYMBOLIZER) == 0
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|| name.compareToIgnoreCase(SLDTags.POINTSYMBOLIZER) == 0
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|| name.compareToIgnoreCase(SLDTags.TEXTSYMBOLIZER) == 0
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|| name.compareToIgnoreCase(SLDTags.RASTERSYMBOLIZER) == 0) {
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/*
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* This line is out of the SLD standard
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*/
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v = parser.getAttributeValue(null, SLDTags.VERSION_ATTR);
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return parseSymbol(parser, v);
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} |
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} |
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} |
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throw new SLDReadException( |
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"Misplaced input stream. Bad opening tag: " + name);
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} |
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private static SLDSymbol parseSymbol(XmlPullParser parser, String version) |
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throws XmlPullParserException, IOException, SLDReadException { |
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return SymbolElement.parse(parser, version);
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} |
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private static SLDLayer parseLayer(XmlPullParser parser, String version) |
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throws XmlPullParserException, IOException, SLDReadException { |
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String name = parser.getName();
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SLDLayer resp = null;
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if (SLDUtils.isStr(name, SLDTags.NAMEDLAYER)) {
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resp = NamedLayerElement.parse(parser, version); |
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} else {
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if (SLDUtils.isStr(name, SLDTags.USERDEFINEDLAYER)) {
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resp = UserLayerElement.parse(parser, version); |
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} else {
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throw new SLDReadException( |
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"Expected layer, found: '" + name + "' tag"); |
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} |
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} |
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return resp;
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} |
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private static SLDFeatureStyle parseFeatureStyle( |
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XmlPullParser parser, String version)
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throws XmlPullParserException, IOException, SLDReadException { |
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String name = parser.getName();
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SLDFeatureStyle resp = null;
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if (SLDUtils.isStr(name, SLDTags.FEATURESTYLE) ||
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SLDUtils.isStr(name, SLDTags.FEATURETYPESTYLE)) {
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resp = FeatureStyleElement.parse(parser, version); |
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} else {
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throw new SLDReadException( |
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"Expected layer, found: '" + name + "' tag"); |
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} |
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return resp;
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} |
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private static SLDRoot parseRoot(XmlPullParser parser, String version) |
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throws XmlPullParserException, IOException, SLDReadException { |
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parser.require(KXmlParser.START_TAG, null, SLDTags.SLD_ROOT);
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int tag = parser.nextTag();
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String name = parser.getName();
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SLDLayer layer_item = null;
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SLDRoot resp = new SLDRoot(version);
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while (tag == KXmlParser.START_TAG &&
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(SLDUtils.isStr(name, SLDTags.USERDEFINEDLAYER) || |
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SLDUtils.isStr(name, SLDTags.NAMEDLAYER))) {
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layer_item = parseLayer(parser, version); |
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resp.getLayers().add(layer_item); |
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// =============
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name = parser.getName(); |
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tag = parser.getEventType(); |
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} |
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parser.require(KXmlParser.END_TAG, null, SLDTags.SLD_ROOT);
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parser.next(); // goes to end of doc
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return resp;
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} |
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// ============ WRITING =================
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public static void writeToFile(SLDObject obj, File outf) |
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throws InvalidSLDObjectException, UnsupportedSLDVersionException,
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UnsupportedSLDObjectException, IOException {
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if (obj == null) { |
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throw new InvalidSLDObjectException("SLDObject", "Null"); |
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} |
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if (! (obj instanceof SLDRoot |
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|| obj instanceof SLDFeatureStyle
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|| obj instanceof SLDSymbol)) {
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throw new InvalidSLDObjectException("Unexpected class.", |
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obj.getClass().getName()); |
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} |
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if (outf == null || !outf.canWrite()) { |
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new IOException("Null or read-only file: " |
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+ (outf == null ? "Null" : outf.getAbsolutePath())); |
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} |
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if (obj.getVersion() == null || !versions.contains(obj.getVersion())) { |
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throw new UnsupportedSLDVersionException(obj.getVersion()); |
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} |
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// ok
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outf.delete(); |
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outf.createNewFile(); |
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FileOutputStream outs = new FileOutputStream(outf); |
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XmlBuilder xmlb = getXML(obj); |
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OutputStreamWriter writer = new OutputStreamWriter(outs, SLDUtils.DEFAULT_ENCODING); |
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writer.write(xmlb.getXML()); |
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writer.close(); |
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outs.close(); |
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} |
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public static XmlBuilder getXML(SLDObject obj) |
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throws InvalidSLDObjectException, UnsupportedSLDObjectException {
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if (! (obj instanceof SLDRoot |
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|| obj instanceof SLDFeatureStyle
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|| obj instanceof SLDSymbol)) {
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throw new InvalidSLDObjectException("Unexpected entity.", |
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obj.getClass().getName()); |
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} |
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Map<String, String> attributes = new HashMap<String, String>(); |
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attributes.put("xsi:schemaLocation","http://www.opengis.net/sld StyledLayerDescriptor.xsd"); |
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attributes.put("xmlns","http://www.opengis.net/sld"); |
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attributes.put("xmlns:ogc","http://www.opengis.net/ogc"); |
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attributes.put("xmlns:xlink","http://www.w3.org/1999/xlink"); |
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attributes.put("xmlns:xsi","http://www.w3.org/2001/XMLSchema-instance"); |
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attributes.put(SLDTags.VERSION_ATTR, obj.getVersion()); |
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/*
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* Atts will be written in the opentag of the first entity
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*/
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XmlBuilder xmlBuilder = new XmlBuilder();
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xmlBuilder.setEncoding(SLDUtils.DEFAULT_ENCODING); |
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xmlBuilder.writeHeader(); |
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// ==========================================
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if (obj instanceof SLDRoot) { |
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appendRoot((SLDRoot) obj, xmlBuilder, attributes); |
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} else {
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if (obj instanceof SLDFeatureStyle) { |
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/*
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* Doing this is not SLD standard-conformal
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*/
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FeatureStyleElement.append((SLDFeatureStyle) obj, xmlBuilder, attributes); |
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} else {
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if (obj instanceof SLDSymbol) { |
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/*
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* Doing this is not SLD standard-conformal
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*/
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SymbolElement.append((SLDSymbol) obj, xmlBuilder, attributes); |
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} |
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} |
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} |
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// ==========================================
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return xmlBuilder;
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} |
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private static void appendRoot( |
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SLDRoot root, |
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XmlBuilder xb, |
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Map<String, String> atts) throws |
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InvalidSLDObjectException, UnsupportedSLDObjectException {
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xb.openTag(SLDTags.SLD_ROOT, atts); |
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List<SLDLayer> list = root.getLayers();
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if (list == null || list.size() == 0) { |
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throw new InvalidSLDObjectException( |
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SLDTags.SLD_ROOT, "No layers");
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} else {
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for (int i=0; i<list.size(); i++) { |
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if (list.get(i) instanceof SLDUserLayer) { |
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// Do not pass attributes 8already written)
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UserLayerElement.append((SLDUserLayer) list.get(i), xb, root.getVersion()); |
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} else {
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if (list.get(i) instanceof SLDNamedLayer) { |
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// Do not pass attributes 8already written)
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NamedLayerElement.append((SLDNamedLayer) list.get(i), xb, root.getVersion()); |
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} else {
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throw new UnsupportedSLDObjectException( |
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(list.get(i) == null ? "Null" : |
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list.get(i).getClass().getName()), |
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"Unknwon layer type");
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} |
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} |
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} |
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} |
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xb.closeTag(); |
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} |
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} |