Kicad c++ walkthrough – footprint APIs

I’ve gotten several requests to talk about how to decipher the kicad c++ code base, about how does one add new python APIs.In the youtube video below, I walk through the changes I needed to make to enable querying about the available footprint libraries. As I walk through the code, I try to give insight on how the code related to that change is put together. There is a little bit of discussion of this patch on the kicad developer list. The patch I talk about can be view here. The old (bad) patch can be viewed here.
The three new APIs (which will hopefully be merged):

# return a list of modules in a library. Takes a library name:
mods = pcbnew.FootprintsInLib('MountingHole')
# Returns information about a footprint.
# The ':' delimiter between the library and modules is important.
# output:
{ 'uniquepadcount': 0, 'padcount': 0, 'name': 'MountingHole_3.2mm_M3',
 'lib': 'MountingHole', 'doc': 'Mounting Hole 3.2mm, no annular, M3',
 'ordernum': 0, 'keywords': 'mounting hole 3.2mm no annular m3'}") FootprintInfo;
# returns a list of all available footprint libraries

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