Additional formats (GPSBabel)

[vibrog]

Add support for relevant GPS file formats supported by GPSBabel, e.g. Garmin FIT, TCX, GDB.

[vibrog]

    // Call GPSBabel
    NSString *cmd = [NSString stringWithFormat:
                     @"'%@/gpsbabel' -i garmin_fit -f '%@' -o gpx -F '%@' %s", 
                     rsrcEsc, rsrcEsc, targetEsc, thumbnail ? "1" : "0"];
    gpxlog(@"cmd = %@", cmd);

    output = runTask(cmd, env, status);
    if (*status != 0) {
        NSLog(@"quicklook-gpx: gpsbabel failed with exit code %d.  Command was (%@).", 
              *status, cmd);
    }

[vibrog]

TCX can be converted (to GPX or GeoJSON) using XSLT 1.0, which is natively supported by macOS.