Hi Ticker, reg. " unless --code-page is given" I see. Will try to change the code so that Mdr16 evaluates sort later.
Gerd ________________________________________ Von: mkgmap-dev <mkgmap-dev-boun...@lists.mkgmap.org.uk> im Auftrag von Ticker Berkin <rwb-mkg...@jagit.co.uk> Gesendet: Sonntag, 16. Januar 2022 13:37 An: Development list for mkgmap Betreff: Re: [mkgmap-dev] Please try and report results of Huffman compression Hi Gerd I'm just starting to look at this, but won't be able to do much today, but some initial findings: If just making gmapi from .img, unless --code-page is given it doesn't do compression, however the Mdr generated with the expected charset. MdrCheck and MdrDisplay, including string dump, look good Ticker On Sat, 2022-01-15 at 15:59 +0000, Gerd Petermann wrote: > Hi all, > > during the last weeks Ticker and I decoded Garmin's String compression > of the global index for the PC (the *_mdr.img) . > In the mdr2 branch I've coded support for that in mkgmap and I think > its ready for a first beta test. > > It works with codepages 1250 ..1258 or 65001. > I've no idea how the 2-byte pages work, but Garmin seems to support > that, too. Maybe I'll work on this later. > > The branch version produces around 200 lines of diagnostic output to > show what happens when compression is enabled. > This will be changed to debug level later. > > The encoding is enabled by default, special option --x-no-mdr15- > compression can be used to turn it off. > > Note that the size of the *_mdr.img file will be smaller (which is esp. > intersting for those who get close to the 2G limit) > Note also that a zipped *_mdr.img can and will be larger since zip > cannot remove as much redundancy. > Note also that this branch includes the changes from the faster-mp > branch and introduces a few changes > which are relavant for --lower-case maps. > > How to test? > Install the map in MapSource and check if you see any unexpected > characters in the result lists or maybe even crashes while searching. > If so, please try the same input files with the --x-no-mdr15- > compression to verify if this is caused by compression or maybe other > changes. > > Please don't yet publish the maps, but let me know if you see anything > unexpected. Some changes reg. lower-case in this branch are still > experimental. > > The binary is here: > https://www.mkgmap.org.uk/download/mkgmap-mdr2-r4865.zip > > If you see errors which are caused by compression, please attach the > diagnostic output. > > @Ticker: Please review the source. > > Gerd > _______________________________________________ > mkgmap-dev mailing list > mkgmap-dev@lists.mkgmap.org.uk > https://www.mkgmap.org.uk/mailman/listinfo/mkgmap-dev _______________________________________________ mkgmap-dev mailing list mkgmap-dev@lists.mkgmap.org.uk https://www.mkgmap.org.uk/mailman/listinfo/mkgmap-dev _______________________________________________ mkgmap-dev mailing list mkgmap-dev@lists.mkgmap.org.uk https://www.mkgmap.org.uk/mailman/listinfo/mkgmap-dev
