Application: gvSIG desktop » gvSIG raster

/* gvSIG. Geographic Information System of the Valencian Government

 *

 * Copyright (C) 2007-2008 Infrastructures and Transports Department

 * of the Valencian Government (CIT)

 *

 * 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., 51 Franklin Street, Fifth Floor, Boston,

 * MA  02110-1301, USA.

 *

 */

package org.gvsig.raster.mosaic.io;

import java.io.File;

import java.io.FileWriter;

import java.io.IOException;

import java.io.Reader;

import java.io.StringReader;

import java.text.ParseException;

import org.gvsig.fmap.dal.coverage.exception.ParsingException;

import org.gvsig.raster.impl.store.rmf.ClassSerializer;

import org.gvsig.raster.impl.store.rmf.RmfBlocksManager;

import org.kxml2.io.KXmlParser;

import org.xmlpull.v1.XmlPullParserException;

/**

 * @author Nacho Brodin (nachobrodin@gmail.com)

 */

public class MosaicRasterFormatSerializer extends ClassSerializer {

        //TAGS

        public static final String MAIN_TAG          = "MultiFileFormat";

        public static final String URIS              = "URIs";

        public static final String URI               = "URI";

        public static final String DESCRIPTION       = "Description";

        public static final String NAME              = "Name";

        private MosaicRasterFormat       mosaicFormat      = null;

        public MosaicRasterFormatSerializer(MosaicRasterFormat mosaicFormat) {

                this.mosaicFormat = mosaicFormat;

        }

         /**

         * Parsers a date list

         * @param tInfo

         * @param parser

         * @param xml

         * @param tag

         * @throws XmlPullParserException

         * @throws IOException

         * @throws ParsingException

         * @throws NumberFormatException

         * @throws ParseException 

         */

        public void parseURIs(KXmlParser parser, String xml, String parseableTag) throws XmlPullParserException, IOException, NumberFormatException, ParsingException, ParseException  {

                boolean end = false;

                boolean init = false;

                boolean readFile = false;

                int tag = parser.next();

                while (!end) {

                        switch (tag) {

                                case KXmlParser.END_DOCUMENT:

                                        return;

                                case KXmlParser.START_TAG:

                                        if (parser.getName().compareTo(parseableTag) == 0) {

                                                init = true;

                                        }

                                        if(init) {

                                                if (parser.getName().compareTo(URI) == 0) {

                                                        readFile = true;

                                                }

                                        }

                                        break;

                                case KXmlParser.END_TAG:

                                        if (parser.getName().compareTo(parseableTag) == 0)

                                                end = true;

                                        break;

                                case KXmlParser.TEXT:

                                        if(readFile) {

                                                String file = parser.getText();

                                                mosaicFormat.addFile(new File(file));

                                                readFile = false;

                                        }

                                        break;

                        }

                        if (!end)

                                tag = parser.next();

                }

        }

        /*

         * (non-Javadoc)

         * @see org.gvsig.raster.dataset.io.rmf.IRmfBlock#read(java.lang.String)

         */

        public void read(String xml) throws ParsingException {

                if(mosaicFormat == null)

                        mosaicFormat = new MosaicRasterFormat();

                else {

                        mosaicFormat.clean();

                }

                boolean init = false;

                boolean end = false;

                KXmlParser parser = new KXmlParser();

                Reader reader = new StringReader(xml);

                try {

                        parser.setInput(reader);

                } catch (XmlPullParserException e) {

                        throw new ParsingException(xml);

                }

                try {

                        int tag = parser.nextTag();

                        if ( parser.getEventType() != KXmlParser.END_DOCUMENT ){

                                parser.require(KXmlParser.START_TAG, null, MAIN_TAG);

                                while(tag != KXmlParser.END_DOCUMENT) {

                                        switch(tag) {

                                                case KXmlParser.START_TAG:

                                                        if (parser.getName().compareTo(MAIN_TAG) == 0)

                                                                init = true;

                                                        break;

                                                case KXmlParser.END_TAG:

                                                        if(parser.getName().compareTo(MAIN_TAG) == 0)

                                                                end = true;

                                                        break;

                                                case KXmlParser.TEXT:

                                                        if(init) {

                                                                String name = parserString(parser, NAME, null);

                                                                mosaicFormat.setName(name);

                                                                String desc = parserString(parser, DESCRIPTION, null);

                                                                mosaicFormat.setDescription(desc);

                                                                parseURIs(parser, xml, URIS);

                                                                init = false;

                                                        }

                                                        break;

                                        }

                                        if(end)

                                                break;

                                        tag = parser.next();

                                }

                        }

                } catch (XmlPullParserException e) {

                        throw new ParsingException(xml);

                } catch (IOException e) {

                        throw new ParsingException(xml);

                } catch (NumberFormatException e) {

                        throw new ParsingException(xml);

                } catch (ParseException e) {

                        throw new ParsingException(xml);

                }

        }

        /**

         * Writes a MultiFileFormat to disk

         * @param mosaicFormat

         * @param file

         * @throws IOException

         */

        public static void write(MosaicRasterFormat mosaicFormat, String fileName) throws IOException {

                File file = new File(fileName);

                file.createNewFile();

                FileWriter writer = new FileWriter(file);

                MosaicRasterFormatSerializer serializer = new MosaicRasterFormatSerializer(mosaicFormat);

                writer.write(serializer.write());

                writer.close();

        }

        /**

         * Reads a TimeSeriesFormat from disk

         * @param timeSeriesFormat

         * @param file

         * @throws IOException

         * @throws ParsingException 

         */

        public static MosaicRasterFormat read(MosaicRasterFormat timeSeriesFormat, String file) throws IOException, ParsingException {

                RmfBlocksManager manager = new RmfBlocksManager(file);

                MosaicRasterFormatSerializer serializer = new MosaicRasterFormatSerializer(timeSeriesFormat);

                manager.addClient(serializer);

                manager.read(null);

                return timeSeriesFormat;

        }

        /*

         * (non-Javadoc)

         * @see org.gvsig.raster.dataset.io.rmf.IRmfBlock#write()

         */

        public String write() {

                StringBuffer b = new StringBuffer();

                b.append("<?xml version=\"1.0\" encoding=\"ISO-8859-15\"?>\n");

                b.append("<" + MAIN_TAG + ">\n");

                putProperty(b, NAME, mosaicFormat.getName(), 2);

                putProperty(b, DESCRIPTION, mosaicFormat.getDescription(), 2);

                b.append("\t\t<" + URIS + ">\n");

                for (int i = 0; i < mosaicFormat.getNumberOfFiles(); i++) {

                        putProperty(b, URI, mosaicFormat.getPathToFile(i), 3);

                }

                b.append("\t\t</" + URIS + ">\n");

                b.append("</" + MAIN_TAG + ">\n");

                return b.toString();

        }

        /*

         * (non-Javadoc)

         * @see org.gvsig.raster.dataset.io.rmf.IRmfBlock#getResult()

         */

        public Object getResult() {

                return mosaicFormat;

        }

        /*

         *  (non-Javadoc)

         * @see org.gvsig.raster.dataset.io.rmf.IRmfBlock#getMainTag()

         */

        public String getMainTag() {

                return MAIN_TAG;

        }

}