[mkgmap-dev] [PATCH v5] - Code around highway shield crap when sorting labels

Sun Mar 21 22:36:52 GMT 2010

v5 - now understands the 0x1b prefix code that introduces a lower case
letter (and also is used to prefix a couple of separators (0x1b and
0x1c).

I thought great, now I can prefix my road names with ^\ (aka 0x1c) and
they won't show up so readily when zoomed out. That worked as expected
but, unfortunately, it broke the address search stuff so the bottom
line is that you can't use the separators as a prefix (sob).

Also, for those of you wondering why the display names and other refs
are not showing up in the mapsource address search - it's because the
MDR building code only reads the first label for a road and ignores any
others. Shame that. I don't think there's a good reason why it couldn't
read the other labels, it's just doesn't do that at the moment. BTW -
the basic address search on the etrex and Nuvi still sees those
alternative road labels.

So, those people who are tracking this patch series, please test and if
it doesn't bite your arse, I will commit it soonish

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v4 - found the motorways (and a load of other roads too!)

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v3 - now works harder to clean up road names for use in MDR file - not
sure if this will have a beneficial effect but it could possibly fix
the issue recently reported by Felix.

Motorways are still not showing up.

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v2 - remove more duplicate labels that only differ in letter case -
remove leading spaces from labels even if they start with a Garmin code.

Still something wrong with motorway names because on the UK map, only
the M74 appears in the mapsource road names - all other motorways are
missing - very odd.

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This patch codes around the problems introduced by highway
shields with regard to the sorted roads:

1 - the sort order should now be much improved

2 - no duplicate symbols (shield version + non-shield version)

It also includes a fix to the label reading code so that labels with a
highway shield prefix are read in correctly when generating the MDR
file.

For me, in mapsource, road search for roads with highway shields now
works apart from motorways which don't seem to searchable - perhaps
that's deliberate on Garmin's part?

All feedback appreciated.

Mark
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