The reason for using code-pages other than 65001 is that many Garmin
devices fail to load non original unicode maps. See Felix explanation
here:
https://openmtbmap.org/download/odbl/#Compatibility_-_Unicode_vs_Non_Unicode_cannot_authenticate_maps
El 24/10/21 a las 18:14, Ticker Berkin escribió:
Hi Carlos
When mkgmap doesn't have a resources/sort for the given code page, it
defaults the sort to cp1252 (Western European).
As part of building the the various indexes, it sorts counties,
regions, cities, streets etc using this sort, but any characters that
don't have a defined sort order are ignored in the ordering. The result
of this is that, using cp1252 on Chinese, all names seem the same.
I suspect that indexes are mostly empty and find is ignoring them.
There is some logic that is differentiating the names in these
structures on exact naming, and this inconsistency causes the assertion
crash.
The actual output in the map image is cp836, which Basecamp and
Mapsource appear to handle. I don't know how well it is supported by
Garmin devices.
Is there a reason for using cp836 rather than cp65001/unicode?
Ticker
On Sun, 2021-10-24 at 16:22 +0200, Carlos Dávila wrote:
using copy from JOSM/paste into BaseCamp, I could test address
searches
and they seem to work.
El 23/10/21 a las 23:50, Ticker Berkin escribió:
Hi Carlos
mkgmap doesn't have a resources/sort for code-page 936 (Microsoft's
character encoding for simplified Chinese). I was surprised it
doesn't
give any warning about this. I'll look more closely tomorrow to see
what happens when it doesn't find the resource file.
I presume this didn't crash before, but did the index work?
I suspect this will have many of the same problems as unicode sort
had
for unspecified characters.
I'll also investigate the other change relating to collation
strength.
Ticker
On Sat, 2021-10-23 at 22:26 +0200, Carlos Dávila wrote:
Hi devs.
With this new version I get a new crash, but now with --code-
page=936,
not with unicode:
Exception in thread "main" java.lang.AssertionError: mdr20 value
changed
f=5174 t=5180 count=2995
at
uk.me.parabola.imgfmt.app.mdr.Mdr5Record.setMdr20(Mdr5Record.java
:134
)
at
uk.me.parabola.imgfmt.app.mdr.Mdr20.buildFromStreets(Mdr20.java:8
4)
at
uk.me.parabola.imgfmt.app.mdr.MDRFile.writeSections(MDRFile.java:
335)
at
uk.me.parabola.imgfmt.app.mdr.MDRFile.write(MDRFile.java:270)
at
uk.me.parabola.mkgmap.combiners.MdrBuilder.onFinish(MdrBuilder.ja
va:3
31)
at
uk.me.parabola.mkgmap.main.Main.endOptions(Main.java:690)
at
uk.me.parabola.mkgmap.CommandArgsReader.readArgs(CommandArgsReade
r.ja
va:126)
at
uk.me.parabola.mkgmap.main.Main.mainStart(Main.java:147)
at uk.me.parabola.mkgmap.main.Main.main(Main.java:118)
mkgmap command: java -ea -jar mkgmap-r4809.jar --index
--bounds=bounds.zip --housenumbers --code-page=936 31177013.o5m
https://files.mkgmap.org.uk/download/524/31177013.o5m
El 22/10/21 a las 9:42, svn commit escribió:
Version mkgmap-r4809 was committed by gerd on Fri, 22 Oct 2021
fix java.lang.AssertionError while building index from unicode
tiles
mdrUnicode_v2.patch by Ticker Berkin
http://www.mkgmap.org.uk/websvn/revision.php?repname=mkgmap&rev=4809
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