Subversion Repositories mkgmap

/*
 * Copyright (C) 2011.
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License version 3 or
 * 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.
 */
package uk.me.parabola.imgfmt.app.mdr;

import java.util.ArrayList;
import java.util.List;

/**
 * This section contains the streets sorted by region.
 * There is no pointer from region, unlike in the case with cities.
 *
 * @author Steve Ratcliffe
 * @author Gerd Petermann
 */
public class Mdr21 extends Mdr2x {

        public Mdr21(MdrConfig config) {
                setConfig(config);
        }

        /**
         * We need to sort the streets by the name of their region. Within a region
         * group the streets are ordered by their own index.
         *
         * @param inStreets The list of streets from mdr7.
         */
        public void buildFromStreets(List<Mdr7Record> inStreets) {
                ArrayList<Mdr7Record> sorted = new ArrayList<>(inStreets.size());
                for (Mdr7Record street : inStreets) {
                        if (street.getCity() != null && street.getCity().getMdrRegion() != null)
                                sorted.add(street);
                }
                sorted.sort((o1, o2) -> {
                        int d = Integer.compare(o1.getCity().getMdr21SortPos(), o2.getCity().getMdr21SortPos());
                        if (d != 0)
                                return d;
                        return Integer.compare(o1.getIndex(), o2.getIndex());
                });

                int lastIndex = -1;
                int record = 0;
                for (Mdr7Record street : sorted) {
                        if (lastIndex != street.getIndex()) {
                                record++;
                                streets.add(street);

                                Mdr13Record mdrRegion = street.getCity().getMdrRegion();
                                if (mdrRegion != null) {
                                        Mdr28Record mdr28 = mdrRegion.getMdr28();
                                        mdr28.setMdr21(record);
                                }

                                lastIndex = street.getIndex();
                        }
                }
        }

        protected boolean sameGroup(Mdr7Record street1, Mdr7Record street2) {
                return true;
        }

        /**
         * Not known what these flags signify.
         */
        public int getExtraValue() {
                return 0x11800;
        }
}