Consolidate GPX and GPC-GC

[following5]

There are two GPX exporters in OCPL code: GPX-GC ("Groundspeak GPX") and GPX. Does someone remember what's the intended difference of both? Are there compability problems of "GPX-GC" with some devices? Is it to minimize data amount when downloading many caches? (see #1006 - Gpx export memory issue)

OCDE has only one GPX format, which is Groundspeak compatible and works with all devices. But it limits the download to max. 500 caches.

GPX-GC download is linked here:

• Collected searches
• My list
• Search results - export selected caches
• Powertrails
• Viewcache

GPX download ist linked here:

• Collected searches
• My list
• Search results - export all caches

Important improvements are missing in GPX. The usual problem with redundant copy-and-past source code (lib/search.gpx.inc.php vs. lib/search.gpxgc.inc.php).

I suggest to consolidate that, either merge both to one module which produces both formats, or fix GPX-GC if it has issues with some devices and discard GPX.

[following5]

Just noticed that GPX and GPX-GC have different mappings for special OC cache sizes.

GPX:

• Very Large => Large
• Nano => Micro

GPX-GC:

• Very Large => Very Large, which will appear as "Other" / unknown in some apps
• Nano => Nano, which will appear as "Other" / unknown in some apps.

I would prefer to map Very Large always to Large. But am not sure about Nano.

[following5]

Another option would be to discard the legacy GPX code and rebase all GPX download on OKAPI. Additional [internal] switches may be added to OKAPI GPX service, if necessary, so that the output will have the desired format and may contain more than 500 caches.