/*
* 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.nio.charset.Charset;
import java.util.ArrayList;
import java.util.List;
import uk.me.parabola.imgfmt.app.ImgFileWriter;
/**
* This section is a simple index into the streets section (mdr7).
*
* @author Steve Ratcliffe
*/
public class Mdr8 extends MdrSection implements HasHeaderFlags {
private static final int STRING_WIDTH = 4;
private List<Mdr8Record> index = new ArrayList<Mdr8Record>();
public Mdr8(MdrConfig config) {
setConfig(config);
}
/**
* Write out the contents of this section.
*
* @param writer Where to write it.
*/
public void writeSectData(ImgFileWriter writer) {
int size = associatedSize();
Charset charset = getConfig().getSort().getCharset();
for (Mdr8Record s : index) {
writer.put(s.getPrefix().getBytes(charset), 0, STRING_WIDTH);
putN(writer, size, s.getRecordNumber());
}
}
protected int associatedSize() {
return getSizes().getStreetSize();
}
/**
* The number of records in this section.
*
* @return The number of items in the section.
*/
protected int numberOfItems() {
return index.size();
}
/**
* The size of a record in the section. This is not a constant and might vary
* on various factors, such as the file version, if we are preparing for a
* device, the number of maps etc.
*
* @return The size of a record in this section.
*/
public int getItemSize() {
return STRING_WIDTH + associatedSize();
}
public void setIndex(List<Mdr8Record> index) {
this.index = index;
}
/**
* The header flags for the section.
* Possible values are not known.
*
* @return The correct value based on the contents of the section. Zero if
* nothing needs to be done.
*/
public int getExtraValue() {
// this value is likely to depend on the size of the max record number.
return (STRING_WIDTH << 8) + 0x0a;
}
}