/*
* 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.text.Collator;
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.MultiSortKey;
import uk.me.parabola.imgfmt.app.srt.Sort;
import uk.me.parabola.imgfmt.app.srt.SortKey;
/**
* This is a list of streets that belong to each city.
*
* It is sorted with each group of streets that belong to a city in the same
* order as the cities, within each group the sort is by street id in mdr7.
*
* Streets that do not have an associated city are not included.
*
* There is a subsection in the mdr1 reverse index for this section, however
* the map index is not saved as part of this record.
*
* @author Steve Ratcliffe
*/
public class Mdr20
extends Mdr2x
{
public Mdr20
(MdrConfig config
) {
setConfig
(config
);
}
/**
* We need to sort the streets by the name of the city. Within a city
* group the streets are ordered by their own index.
*
* Also have to set the record number of the first record in this section
* on the city.
*
* @param inStreets The list of streets from mdr7, must have Mdr7.index set.
*/
public void buildFromStreets
(List<Mdr7Record
> inStreets
) {
Sort sort = getConfig
().
getSort();
// Use a key cache because there are a large number of street names but a much smaller number
// of city, region and country names. Therefore we can reuse the memory needed for the keys
// most of the time, particularly for the country and region names.
Map<String,
byte[]> cache =
new HashMap<>();
List<SortKey<Mdr7Record
>> keys =
new ArrayList<>();
for (Mdr7Record s : inStreets
) {
Mdr5Record city = s.
getCity();
if (city ==
null)
continue;
String name = city.
getName();
if (name ==
null || name.
isEmpty())
assert false;
// We are sorting the streets, but we are sorting primarily on the
// city name associated with the street, then on the street name.
SortKey<Mdr7Record
> cityKey = sort.
createSortKey(s, city.
getName(),
0, cache
);
SortKey<Mdr7Record
> regionKey = sort.
createSortKey(null, city.
getRegionName(),
0, cache
);
// The streets are already sorted, with the getIndex() method revealing the sort order
SortKey<Mdr7Record
> countryStreetKey = sort.
createSortKey(null, city.
getCountryName(), s.
getIndex(),
cache
);
// Combine all together so we can sort on it.
SortKey<Mdr7Record
> key =
new MultiSortKey
<>(cityKey, regionKey, countryStreetKey
);
keys.
add(key
);
}
Collections.
sort(keys
);
Collator collator = getConfig
().
getSort().
getCollator();
String lastName =
null;
String lastPartialName =
null;
Mdr5Record lastCity =
null;
int record =
0;
int cityRecord =
1;
int lastMapNumber =
0;
for (SortKey<Mdr7Record
> key : keys
) {
Mdr7Record street = key.
getObject();
String name = street.
getName();
String partialName = street.
getPartialName();
Mdr5Record city = street.
getCity();
boolean citySameByName = city.
isSameByName(collator, lastCity
);
int mapNumber = city.
getMapIndex();
// Only save a single copy of each street name.
if (!citySameByName || mapNumber
!= lastMapNumber || lastName ==
null || lastPartialName ==
null
||
!name.
equals(lastName
)
||
!partialName.
equals(lastPartialName
))
{
record++
;
streets.
add(street
);
lastName = name
;
lastPartialName = partialName
;
}
// The mdr20 value changes for each new city name
if (citySameByName
) {
assert cityRecord
!=
0;
city.
setMdr20(cityRecord
);
} else {
// New city name, this marks the start of a new section in mdr20
assert cityRecord
!=
0;
cityRecord = record
;
city.
setMdr20(cityRecord
);
lastCity = city
;
}
lastMapNumber = mapNumber
;
}
}
/**
* Two streets are in the same group if they have the same mdr20 id.
*/
protected boolean sameGroup
(Mdr7Record street1, Mdr7Record street2
) {
if (street2
!=
null && street1.
getCity().
getMdr20() == street2.
getCity().
getMdr20())
return true;
return false;
}
/**
* Unknown.
*/
public int getExtraValue
() {
return isForDevice
() ? 0xe : 0x8800
;
}
}