[mkgmap-dev] mkgmap style parsing question.

Mon Oct 18 17:14:45 BST 2010

> Johann,
>
> the idea to printout a warning sounds good. But there are some 
> restrictions within mkgmap that makes it unfeasable.
>   
Yes, unfortunatelly I know the internas somewhat :-)
> When mkgmap reads the OSM data all tags which keys are not referenced in 
> the style files are dropped. This improves the performance and reduces 
> the memory footprint *enormously*. The style file processing is done at 
> a later stage.
>
>   
So why not printout a warning at this stage, where the key is dropped? 
Or maybe not printout directly, but fill a statistics class with it. So 
the user can see, there are x (thousand) occurences of a key he has not 
handled in his style file.

> So in case your style file only contains a rule for natural=water you 
> would get a warning for natural=land but not for landuse=residential.
>
> I don't think that's what you want?
>   
I personally don't need this feature at all. It was meant only as a 
suggestion in response to the original poster.
I will not implement it. ;-) If I will find some time for the mkgmap 
project, I have other preferences.


Johann