/*
* Copyright (C) 2007 Steve Ratcliffe
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License 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.
*
*
* Author: Steve Ratcliffe
* Create date: Jan 1, 2008
*/
package uk.me.parabola.imgfmt.app.lbl;
import java.util.List;
import uk.me.parabola.imgfmt.app.Exit;
import uk.me.parabola.imgfmt.app.ImgFileWriter;
import uk.me.parabola.imgfmt.app.Label;
/**
* @author Steve Ratcliffe
*/
public class POIRecord
{
static final byte HAS_STREET_NUM = 0x01
;
static final byte HAS_STREET = 0x02
;
static final byte HAS_CITY = 0x04
;
static final byte HAS_ZIP = 0x08
;
static final byte HAS_PHONE = 0x10
;
static final byte HAS_EXIT = 0x20
;
static final byte HAS_TIDE_PREDICTION = 0x40
;
/* Not used yet
private static final AddrAbbr ABBR_HASH = new AddrAbbr(' ', "#");
private static final AddrAbbr ABBR_APARTMENT = new AddrAbbr('1', "APT");
private static final AddrAbbr ABBR_BUILDING = new AddrAbbr('2', "BLDG");
private static final AddrAbbr ABBR_DEPT = new AddrAbbr('3', "DEPT");
private static final AddrAbbr ABBR_FLAT = new AddrAbbr('4', "FL");
private static final AddrAbbr ABBR_ROOM = new AddrAbbr('5', "RM");
private static final AddrAbbr ABBR_STE = new AddrAbbr('6', "STE"); // don't know what this is?
private static final AddrAbbr ABBR_UNIT = new AddrAbbr('7', "UNIT");
*/
private int offset = -
1;
private Label poiName
;
private final SimpleStreetPhoneNumber simpleStreetNumber =
new SimpleStreetPhoneNumber
();
private final SimpleStreetPhoneNumber simplePhoneNumber =
new SimpleStreetPhoneNumber
();
private Label streetName
;
private Label streetNumberName
; // Used for numbers such as 221b
private Label complexPhoneNumber
; // Used for numbers such as 221b
private City city
;
private Zip zip
;
private Exit exit
;
//private String phoneNumber;
public void setLabel
(Label label
) {
this.
poiName = label
;
}
public void setStreetName
(Label label
) {
this.
streetName = label
;
}
public boolean setSimpleStreetNumber
(String streetNumber
)
{
return simpleStreetNumber.
set(streetNumber
);
}
public void setComplexStreetNumber
(Label label
)
{
streetNumberName = label
;
}
public boolean setSimplePhoneNumber
(String phone
)
{
return simplePhoneNumber.
set(phone
);
}
public void setComplexPhoneNumber
(Label label
)
{
complexPhoneNumber = label
;
}
public void setZip
(Zip zip
) {
this.
zip = zip
;
}
public void setCity
(City city
)
{
this.
city = city
;
}
public void setExit
(Exit exit
) {
this.
exit = exit
;
}
void write
(ImgFileWriter writer,
byte POIGlobalFlags,
int realofs,
long numCities,
long numZips,
long numHighways,
long numExitFacilities
) {
assert offset == realofs :
"offset = " + offset +
" realofs = " + realofs
;
int ptr = poiName.
getOffset();
if (POIGlobalFlags
!= getPOIFlags
())
ptr |= 0x800000
;
writer.
put3(ptr
);
if (POIGlobalFlags
!= getPOIFlags
())
writer.
put(getWrittenPOIFlags
(POIGlobalFlags
));
if (streetNumberName
!=
null)
{
int labOff = streetNumberName.
getOffset();
writer.
put((byte)((labOff
& 0x7F0000
) >> 16));
writer.
putChar((char)(labOff
& 0xFFFF
));
}
else if (simpleStreetNumber.
isUsed())
simpleStreetNumber.
write(writer
);
if (streetName
!=
null)
writer.
put3(streetName.
getOffset());
if (city
!=
null)
{
char cityIndex =
(char) city.
getIndex();
if(numCities
> 255)
writer.
putChar(cityIndex
);
else
writer.
put((byte)cityIndex
);
}
if (zip
!=
null) {
char zipIndex =
(char) zip.
getIndex();
if(numZips
> 255)
writer.
putChar(zipIndex
);
else
writer.
put((byte) zipIndex
);
}
if (complexPhoneNumber
!=
null)
{
int labOff = complexPhoneNumber.
getOffset();
writer.
put((byte)((labOff
& 0x7F0000
) >> 16));
writer.
putChar((char)(labOff
& 0xFFFF
));
}
else if (simplePhoneNumber.
isUsed())
simplePhoneNumber.
write(writer
);
if(exit
!=
null) {
Label description = exit.
getDescription();
int val =
0;
if(description
!=
null) {
val = description.
getOffset();
assert val
< 0x400000 :
"Exit description label offset too large";
}
if(exit.
getOvernightParking())
val |= 0x400000
;
List<ExitFacility
> facilites = exit.
getFacilities();
ExitFacility ef =
null;
if(!facilites.
isEmpty())
ef = facilites.
get(0);
if(ef
!=
null)
val |= 0x800000
; // exit facilities defined
writer.
put3(val
);
char highwayIndex =
(char)exit.
getHighway().
getIndex();
if(numHighways
> 255)
writer.
putChar(highwayIndex
);
else
writer.
put((byte)highwayIndex
);
if(ef
!=
null) {
char exitFacilityIndex =
(char)ef.
getIndex();
if(numExitFacilities
> 255)
writer.
putChar(exitFacilityIndex
);
else
writer.
put((byte)exitFacilityIndex
);
}
}
}
byte getPOIFlags
() {
byte b =
0;
if (streetName
!=
null)
b |= HAS_STREET
;
if (simpleStreetNumber.
isUsed() || streetNumberName
!=
null)
b |= HAS_STREET_NUM
;
if (city
!=
null)
b |= HAS_CITY
;
if (zip
!=
null)
b |= HAS_ZIP
;
if (simplePhoneNumber.
isUsed() || complexPhoneNumber
!=
null)
b |= HAS_PHONE
;
if (exit
!=
null)
b |= HAS_EXIT
;
return b
;
}
byte getWrittenPOIFlags
(byte POIGlobalFlags
)
{
int flag =
0;
int j =
0;
int usedFields = getPOIFlags
();
/* the local POI flag is really tricky if a bit is not set in the global mask
we have to skip this bit in the local mask. In other words the meaning of the local bits
change influenced by the global bits */
for(byte i =
0; i
< 6; i++
)
{
int mask =
1 << i
;
if((mask
& POIGlobalFlags
) == mask
)
{
if((mask
& usedFields
) == mask
)
flag |=
(1 << j
);
j++
;
}
}
flag |= 0x80
; // gpsmapedit asserts for this bit set
return (byte) flag
;
}
/**
* Sets the start offset of this POIRecord
*
* \return Number of bytes needed by this entry
*/
int calcOffset
(int ofs,
byte POIGlobalFlags,
long numCities,
long numZips,
long numHighways,
long numExitFacilities
) {
offset = ofs
;
int size =
3;
if (exit
!=
null) {
size +=
3;
size +=
(numHighways
> 255)? 2 :
1;
if(!exit.
getFacilities().
isEmpty())
size +=
(numExitFacilities
> 255)? 2 :
1;
}
if (POIGlobalFlags
!= getPOIFlags
())
size +=
1;
if (simpleStreetNumber.
isUsed())
size += simpleStreetNumber.
getSize();
if (streetNumberName
!=
null)
size +=
3;
if (simplePhoneNumber.
isUsed())
size += simplePhoneNumber.
getSize();
if (complexPhoneNumber
!=
null)
size +=
3;
if (streetName
!=
null)
size +=
3;
if (city
!=
null)
{
/*
depending on how many cities are in the LBL block we have
to write one or two bytes
*/
if(numCities
> 255)
size +=
2;
else
size +=
1;
}
if (zip
!=
null) {
// depending on how many zips are in the LBL block we have to write one or two bytes
if(numZips
> 255)
size +=
2;
else
size +=
1;
}
return size
;
}
public int getOffset
() {
if (offset == -
1)
throw new IllegalStateException("Offset not known yet.");
return offset
;
}
public Label getNameLabel
() {
return poiName
;
}
public City getCity
() {
return city
;
}
/**
* Street and Phone numbers can be stored in two different ways in the poi record
* Simple Number that only contain digits are coded in base 11 coding.
* This helper class tries to code the given number. If the number contains other
* chars like in 4a the coding fails and the caller has to use a Label instead
*/
class SimpleStreetPhoneNumber
{
private byte[] encodedNumber
;
private int encodedSize
;
/**
* Encode a string as base 11.
* @param str The input string.
* @return If the string is not all numeric (or A) then false is returned
* and this object is invalid.
*/
public boolean set
(String str
) {
// remove surrounding whitespace to increase chance for simple encoding
String number = str.
trim();
encodedNumber =
new byte[(number.
length()/
2)+
2];
int i =
0;
int j =
0;
while (i
< number.
length()) {
int c1 = decodeChar
(number.
charAt(i++
));
int c2
;
if (i
< number.
length()) {
c2 = decodeChar
(number.
charAt(i++
));
} else
c2 =
10;
// Only 0-9 and - allowed
if (c1
< 0 || c1
> 10 || c2
< 0 || c2
> 10)
return false;
// Encode as base 11
int val = c1
* 11 + c2
;
// first byte needs special marking with 0x80
// If this is not set would be treated as label pointer
if (j ==
0)
val |= 0x80
;
encodedNumber
[j++
] =
(byte)val
;
}
if (j ==
0)
return false;
if (j ==
1)
encodedNumber
[j++
] =
(byte) 0xf8
;
else
encodedNumber
[j-
1] |= 0x80
;
encodedSize = j
;
return true;
}
public void write
(ImgFileWriter writer
)
{
for(int i =
0; i
< encodedSize
; i++
)
writer.
put(encodedNumber
[i
]);
}
public boolean isUsed
()
{
return (encodedSize
> 0);
}
public int getSize
()
{
return encodedSize
;
}
/**
* Convert the characters '0' to '9' and '-' to a number 0-10 (base 11).
* @param ch The character to convert.
* @return A number between 0 and 10 or -1 if the character is not valid.
*/
private int decodeChar
(char ch
) {
if (ch ==
'-')
return 10;
else if (ch
>=
'0' && ch
<=
'9')
return (ch -
'0');
else
return -
1;
}
}
}