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/*
* Copyright (C) 2009.
*
* 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.List;
import uk.me.parabola.imgfmt.app.ImgFileWriter;
/**
* Super class of all sections that contain items that belong to a particular
* map.
*
* @author Steve Ratcliffe
*/
public abstract class MdrMapSection
extends MdrSection
implements HasHeaderFlags
{
private Mdr1 index
;
public void setMapIndex
(Mdr1 index
) {
this.
index = index
;
}
/**
* This is called before the sections are written out, but after all the
* data is read into them.
* @param sectionNumber The one-based section number.
*/
public final void initIndex
(int sectionNumber
) {
// Set the size required to store the record numbers for this section.
// There are no flags or minimums required here, unlike in setPointerSize()
// which does a similar thing.
int n = getNumberOfItems
();
index.
setPointerSize(sectionNumber, numberToPointerSize
(n
));
}
/**
* Add a pointer to the reverse index for this section.
* @param recordNumber A record number in this section, belonging to the
* given map.
*/
public void addIndexPointer
(int mapNumber,
int recordNumber
) {
if (!isForDevice
())
index.
addPointer(mapNumber, recordNumber
);
}
protected void putCityIndex
(ImgFileWriter writer,
int cityIndex,
boolean isNew
) {
int flag =
(isNew
&& cityIndex
> 0)? getSizes
().
getCityFlag():
0;
putN
(writer, getSizes
().
getCitySizeFlagged(), cityIndex | flag
);
}
protected void putRegionIndex
(ImgFileWriter writer,
int region
) {
// This is only called when putCityIndex might also be called and so has to be
// the same size (probably ;)
putN
(writer, getSizes
().
getCitySizeFlagged(), region
);
}
protected void putPoiIndex
(ImgFileWriter writer,
int poiIndex,
boolean isNew
) {
int flag = isNew
? getSizes
().
getPoiFlag():
0;
putN
(writer, getSizes
().
getPoiSizeFlagged(), poiIndex | flag
);
}
protected boolean hasFlag
(int val
) {
return (getExtraValue
() & val
) !=
0;
}
public abstract void relabelMaps
(Mdr1 maps
);
/**
* Relabel every map-index in the given set of records.
*
* The maps must be in sorted order, but because of the incremental way that we build the
* index, this isn't known until the end. So we get rewrite the mapIndex from the
* initial to the final ordering.
*
* @param maps The final ordering of the maps.
* @param records The set of records to be relabeled.
* @param <T> The type of the record. Must be a subclass of RecordBase.
*/
protected <T
extends RecordBase
> void relabel
(Mdr1 maps,
List<T
> records
) {
for (T r : records
) {
int n = r.
getMapIndex();
int newIndex = maps.
sortedMapIndex(n
);
r.
setMapIndex(newIndex
);
}
}
}