Application: gvSIG desktop

package org.gvsig.sldsupport.impl.sld1_0_0.parsing;

import java.io.IOException;

import org.gvsig.sldsupport.exception.SLDReadException;

import org.gvsig.sldsupport.impl.util.SLDUtils;

import org.gvsig.sldsupport.sld.SLDTags;

import org.gvsig.sldsupport.sld.graphic.SLDExternalGraphic;

import org.kxml2.io.KXmlParser;

import org.xmlpull.v1.XmlPullParser;

import org.xmlpull.v1.XmlPullParserException;

public class ExternalGraphicElement {

        public static SLDExternalGraphic parse(XmlPullParser parser , String version)

                        throws XmlPullParserException, IOException, SLDReadException {

                parser.require(KXmlParser.START_TAG, null, SLDTags.EXTERNALGRAPHIC);

                int tag = 0;

                SLDExternalGraphic resp = new SLDExternalGraphic();

                tag = parser.nextTag();

                String name = parser.getName();

                String txt = null;

                while (!(SLDUtils.isStr(name, SLDTags.EXTERNALGRAPHIC) && tag == KXmlParser.END_TAG)) {

                        switch (tag) {

                        case KXmlParser.START_TAG:

                                if (SLDUtils.isStr(name, SLDTags.FORMAT)) {

                                        txt = parser.nextText();

                                        resp.setFormat(txt);

                                        parser.nextTag();

                                        break;

                                }

                                if (SLDUtils.isStr(name, SLDTags.ONLINE_RESOURCE)) {

                                        // xlink:href="http://somesite.com/something.xml"

                                        String res = parser.getAttributeValue(null, SLDTags.XLINK_HREF);

                                        if (res == null) {

                                                throw new SLDReadException("URL not found (xlink:href att is missing) in online resource entity");

                                        }

                                        resp.setIsOnline(true);

                                        resp.setOnlineResource(res);

                                        parser.nextTag();

                                        parser.nextTag();

                                        break;

                                }

                                if (SLDUtils.isStr(name, SLDTags.INLINE_CONTENT)) {

                                        /*

                                         * This is unlikely to work if content is binary

                                         */

                                        txt = parser.nextText();

                                        resp.setIsOnline(false);

                                        resp.setInlineContent(txt.getBytes());

                                        parser.nextTag();

                                        break;

                                }

                                /*

                                 * Any other entity causes parsing error

                                 */

                                throw new SLDReadException(

                                                "Bad SLD file. Unexpected entity in external graphic: " + name);

                        case KXmlParser.END_TAG:

                                break;

                        case KXmlParser.TEXT:

                                break;

                        }

                        tag = parser.getEventType();

                        name = parser.getName();

                }

                parser.nextTag();

                return resp;

        }        

}