[OSM-dev] tagtransform for OSM - An effort make tagging and using OSM data easier; bridging different worlds together

[Andy Townsend]

On 06/12/2019 14:08, Jean Marie Falisse wrote:
>
> 1.  Is all this written in java?

Taking the examples from 
https://www.openstreetmap.org/user/SomeoneElse/diary/391484 :

  * osmosis is written in Java
  * osmium is I believe C++
  * osm2pgsql's lua interface (obviously) calls things written in lua
  * mkgmap is Java, and uses a style definition in its own format
  * OsmAnd (Android) is Android Java, but the style definitions (which
    can do tag transforms) are just XML files
  * osmfilter is C
  * Valhalla appears to be C++


>
> 2.  Is there anything going on in Haskell? I’d love to be involved in 
> something using Haskell.

I'm not aware of anything, but most of those examples are to some extent 
stand-alone - if you wanted to write something in Haskell to do the same 
or a different standalone job you could.

For example, suppose you wanted to write something that you wanted to 
maintain a personal list of tags that you as a data consumer wanted to 
be treated as if they were another tag.  It'd be able to generate from 
this list:

  * lua for use by the "generic" lua call from osm2pgsql
  * Java called by mkgmap, or a style definition that can be used by it
  * XML style definitions for OsmAnd

You could write the code to generate the above in anything you like, 
even COBOL*.

Best Regards,

Andy

* not just a joke - I did do something very like this in a COBOL-based 
language in the 1980s on a long-defunct minicomputer platform.



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