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;

import uk.me.parabola.imgfmt.app.ImgFileWriter;
import uk.me.parabola.imgfmt.app.lbl.Zip;
import uk.me.parabola.imgfmt.app.srt.SortKey;

/**
 * Section containing zip codes.
 *
 * We need: map number, zip index in map, pointer into MDR 15 for the string name.
 *
 * @author WanMil
 */
public class Mdr6 extends MdrMapSection {

        private final List<Mdr6Record> zips = new ArrayList<>();


        public Mdr6(MdrConfig config) {
                setConfig(config);
        }

        public void addZip(int mapIndex, Zip zip, int strOff) {
                Mdr6Record record = new Mdr6Record(zip);
                record.setMapIndex(mapIndex);
                record.setStringOffset(strOff);
                zips.add(record);
        }
       

        public void writeSectData(ImgFileWriter writer) {
                int zipSize = getSizes().getZipSize();

                List<SortKey<Mdr6Record>> sortKeys = MdrUtils.sortList(getConfig().getSort(), zips);

                boolean hasString = hasFlag(0x4);
                int record = 1;
                for (SortKey<Mdr6Record> key : sortKeys) {
                        Mdr6Record z = key.getObject();
                        addIndexPointer(z.getMapIndex(), record++);

                        putMapIndex(writer, z.getMapIndex());
                        writer.putN(zipSize, z.getZipIndex());
                        if (hasString)
                                putStringOffset(writer, z.getStringOffset());
                }
        }

        /**
         * Enough bytes to represent the map number
         * and the zip index and the string offset.
         * @return The size of a record in this section.
         */
        public int getItemSize() {
                PointerSizes sizes = getSizes();
                int size = sizes.getMapSize() + sizes.getZipSize();
                if (hasFlag(0x4))
                        size += sizes.getStrOffSize();
                return size;
        }

        protected int numberOfItems() {
                return zips.size();
        }

        /**
         * Known structure:
         * bits 0-1: size of local zip index - 1 (all values appear to work)
         * bits 2: if MDR 15 available
         * @return The value to be placed in the header.
         */
        public int getExtraValue() {
                return  ((getSizes().getZipSize()-1)&0x03) | (isForDevice() ? 0 : 0x04);
        }
}