[mkgmap-dev] Commit r3675: dest_hint_v1.patch : change --process-destination option

Fri Apr 1 09:10:47 BST 2016

no 3675  file yet
Steve

On Fri, Apr 1, 2016 at 4:41 PM, svn commit <svn at mkgmap.org.uk> wrote:

> Version mkgmap-r3675 was committed by gerd on Fri, 01 Apr 2016
>
> dest_hint_v1.patch : change --process-destination option
> The process_destination option was a bit problematic because
> it could have added the tag destination=* to an existing OSM element.
>
> The attached patch changes the method like this:
> 1) the tag destination is not changed by mkgmap
> 2) Instead the special tag mkgmap:dest_hint is now set to the
> destination string that was found in one of the tags listed in this code
> snippet:
>         tags.add("destination");
>         tags.add("destination:lanes");
>         tags.add("destination:lanes:forward");
>         tags.add("destination:lanes:backward");
>         tags.add("destination:forward");
>         tags.add("destination:backward");
>         tags.add("destination:street");
>
>
> (BTW: This is also the order of evaluation in mkgmap searches since r3673,
> of cause
> forward/backward are checked depending on the direction of the way)
>
> For style authors this means that they have to
> 1) change all rules with mkgmap:dest_hint=true to mkgmap:dest_hint=*
> 2) change the rule that produces the hint to something like this:
> mkgmap:dest_hint=*
>   { set dest_hint = '${destination:ref|subst: =>}
> ${mkgmap:dest_hint|subst:;=> |subst:/=> }' |
>          '${ref|subst: =>} ${mkgmap:dest_hint|subst:;=> |subst:/=> }' |
>          '${mkgmap:dest_hint|subst:;=> |subst:/=> }';
>        }
>
> Basically all places where "destination" was used were changed to
> mkgmap:dest_hint.
> This could cause trouble, so I've added a check that complains when
> the style contains an expression mkgmap:dest_hint=true.
>
> http://www.mkgmap.org.uk/websvn/revision.php?repname=mkgmap&rev=3675
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