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.Collections;
import java.util.HashMap;
import java.util.List;
import java.util.Map;

import uk.me.parabola.imgfmt.app.srt.Sort;
import uk.me.parabola.imgfmt.app.srt.SortKey;

/**
 * This section contains the streets sorted by region.
 * There is no pointer from region, unlike in the case with cities.
 *
 * @author Steve Ratcliffe
 */
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) {
                Sort sort = getConfig().getSort();

                List<SortKey<Mdr7Record>> keys = new ArrayList<SortKey<Mdr7Record>>();
                Map<String, byte[]> cache = new HashMap<String, byte[]>();

                for (Mdr7Record s : inStreets) {
                        Mdr5Record city = s.getCity();
                        if (city == null) continue;

                        Mdr13Record region = city.getMdrRegion();
                        if (region == null) continue;

                        String name = region.getName();
                        if (name == null)
                                continue;

                        keys.add(sort.createSortKey(s, name, s.getIndex(), cache));
                }

                Collections.sort(keys);

                String lastName = null;
                int lastMapid = 0;
                int record = 0;
                for (SortKey<Mdr7Record> key : keys) {
                        Mdr7Record street = key.getObject();

                        String name = street.getName();
                        int mapid = street.getMapIndex();
                        if (mapid != lastMapid || !name.equals(lastName)) {
                                record++;
                                streets.add(street);

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

                                lastMapid = mapid;
                                lastName = name;
                        }
                }
        }

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