randy
fc174d4267
Maptool::Fit reads Garmin's binary FIT format directly rather than adding a gem — the one Ruby option depends on activesupport, unmaintained since 2022, for a single-purpose binary parser. Only "record" messages are read (position + altitude; everything else is skipped by byte length, never interpreted); field numbers and scale/offset are Garmin's own (fit-python-sdk's profile.py), and the framing plus all extracted values were checked byte-for-byte against 5 real device files from python-fitparse's test suite before this shipped. A .zip upload (Garmin's bulk/FIT export format) is expanded into its .gpx/.fit entries via rubyzip — that one's an actual dependency, since ZIP's own format isn't the kind of narrow, single-purpose parsing FIT above is.