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: Jan 1, 2008
 */
package uk.me.parabola.imgfmt.app.lbl;

import uk.me.parabola.imgfmt.app.ImgFileWriter;
import uk.me.parabola.imgfmt.app.Label;
import uk.me.parabola.imgfmt.app.trergn.Subdivision;

/**
 * A city is in a region.  It also has (or can have anyway) a reference to
 * an indexed point within the map itself.
 *
 * @author Steve Ratcliffe
 */
public class City {
        private static final int POINT_REF = 0x8000;
        private static final int REGION_IS_COUNTRY = 0x4000;

        private int index = -1;

        private final Region region;
        private final Country country;

        // This determines if a label is being used or a subdivision and point
        // combo.
        private boolean pointRef;

        // The location of the city.  These could both be zero if we are using a
        // label instead.
        private Subdivision subdivision;
        private byte pointIndex;


        // You can have either a label or a subdivision and point.  This will be
        // null if the location is being specified.
        private Label label;

        public City(Region region) {
                this.region = region;
                this.country = null;
        }

        public City(Country country) {
                this.country = country;
                this.region = null;
        }

        void write(ImgFileWriter writer) {
                //writer.put3()
                if (pointRef) {
                    //              System.err.println("City point = " + (int)pointIndex + " div = " + subdivision.getNumber());
                        writer.put(pointIndex);
                        writer.putChar((char)subdivision.getNumber());
                } else {
                        writer.put3(label.getOffset());
                }

                char info;
                if(region != null)
                    info = (char) (region.getIndex() & 0x3fff);
                else
                    info = (char) (REGION_IS_COUNTRY | (country.getIndex() & 0x3fff));
                if (pointRef)
                        info |= POINT_REF;

                writer.putChar(info);
        }

        public int getIndex() {
                if (index == -1)
                        throw new IllegalStateException("Offset not known yet.");
                return index;
        }

        public void setIndex(int index) {
                this.index = index;
        }

        public void setLabel(Label label) {
                pointRef = false;
                this.label = label;
        }

        public void setPointIndex(byte pointIndex) {
                pointRef = true;
                this.pointIndex = pointIndex;
        }

        public void setSubdivision(Subdivision subdivision) {
                pointRef = true;
                this.subdivision = subdivision;
        }

        public String getName() {
                if (label == null)
                        return "";
                return label.getText();
        }

        public int getLblOffset() {
                if (label == null)
                        return 0;
                return label.getOffset();
        }

        public String toString() {
                String result = "";
                if(label != null)
                        result += label.getText();
                if (subdivision != null)
                        result += " " + subdivision.getNumber() + "/" + pointIndex;
                if(country != null)
                        result += " in country " + (0 + country.getIndex());
                if(region != null)
                        result += " in region " + (0 + region.getIndex());

                return result;
        }

        public int getSubdivNumber() {
                return subdivision.getNumber();
        }

        public int getPointIndex() {
                return pointIndex;
        }

        /**
         * Get the region or country number.
         * @return The region number if there is one, else the country number
         * with a flag bit set to indicate that it is one.
         */
        public int getRegionCountryNumber() {
                if (region == null) {
                        if (country != null)
                                return country.getIndex() | 0x4000;
                } else {
                        return region.getIndex();
                }
                return 0;
        }

        public int getRegionNumber() {
                return region == null? 0: region.getIndex();
        }
       
        public int getCountryNumber() {
                return country != null ? country.getIndex() : 0;
        }

        public Label getLabel() {
                return label;
        }
}