Subversion Repositories mkgmap

/*
 * Copyright (C) 2007 Steve Ratcliffe
 *
 *  This program is free software; you can redistribute it and/or modify
 *  it under the terms of the GNU General Public License version 2 as
 *  published by the Free Software Foundation.
 *
 *  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.
 *
 *
 * Author: Steve Ratcliffe
 * Create date: Dec 14, 2007
 */
package uk.me.parabola.imgfmt.app.trergn;

import uk.me.parabola.imgfmt.ReadFailedException;
import uk.me.parabola.imgfmt.app.CommonHeader;
import uk.me.parabola.imgfmt.app.ImgFileReader;
import uk.me.parabola.imgfmt.app.ImgFileWriter;
import uk.me.parabola.imgfmt.app.Section;

/**
 * The header for the RGN file.  This is very simple, just a location and size.
 *
 * @author Steve Ratcliffe
 */
public class RGNHeader extends CommonHeader {
        //private static final int DEF_LEN = 29;
        private static final int DEF_LEN = 125;
        public static final int HEADER_LEN = DEF_LEN;

        private final Section data = new Section();

        private int extTypeAreasOffset;
        private int extTypeAreasSize;
        private int extTypeLinesOffset;
        private int extTypeLinesSize;
        private int extTypePointsOffset;
        private int extTypePointsSize;

        public RGNHeader() {
                super(HEADER_LEN, "GARMIN RGN");
                data.setPosition(HEADER_LEN);
        }

        /**
         * Read the rest of the header.  Specific to the given file.  It is guaranteed
         * that the file position will be set to the correct place before this is
         * called.
         *
         * @param reader The header is read from here.
         */
        protected void readFileHeader(ImgFileReader reader) throws ReadFailedException {
                data.readSectionInfo(reader, false);
        }

        /**
         * Write the rest of the header.  It is guaranteed that the writer will be set
         * to the correct position before calling.
         *
         * @param writer The header is written here.
         */
        protected void writeFileHeader(ImgFileWriter writer) {
                data.writeSectionInfo(writer, false);

                if (getHeaderLength() > 29) {
                        writer.putInt(extTypeAreasOffset);
                        writer.putInt(extTypeAreasSize);
                        writer.putInt(0);
                        writer.putInt(0);
                        writer.putInt(0);
                        writer.putInt(0);
                        writer.putInt(0);

                        writer.putInt(extTypeLinesOffset);
                        writer.putInt(extTypeLinesSize);
                        writer.putInt(0);
                        writer.putInt(0);
                        writer.putInt(0);
                        writer.putInt(0);
                        writer.putInt(0);

                        writer.putInt(extTypePointsOffset);
                        writer.putInt(extTypePointsSize);
                        writer.putInt(0);
                        writer.putInt(0);
                        writer.putInt(0);
                        writer.putInt(0);
                        writer.putInt(0);
                        writer.putInt(0);
                        writer.putInt(0);
                        writer.putInt(0);
                }
        }

        public int getDataOffset() {
                return data.getPosition();
        }
       
        public void setDataSize(int dataSize) {
                data.setSize(dataSize);
        }

        public void setExtTypeAreasInfo(int offset, int size) {
                extTypeAreasOffset = offset;
                extTypeAreasSize = size;
        }

        public void setExtTypeLinesInfo(int offset, int size) {
                extTypeLinesOffset = offset;
                extTypeLinesSize = size;
        }

        public void setExtTypePointsInfo(int offset, int size) {
                extTypePointsOffset = offset;
                extTypePointsSize = size;
        }
}