app/views/api/tracepoints/index.gpx.builder

   1 # frozen_string_literal: true
   2
   3 xml.instruct!
   4
   5 xml.gpx("version" => "1.0",
   6         "creator" => "OpenStreetMap.org",
   7         "xmlns" => "http://www.topografix.com/GPX/1/0") do
   8   # initialise these variables outside of the loop so that they
   9   # stay in scope and don't get free'd up by the GC during the
  10   # loop.
  11   gpx_id = -1
  12   trackid = -1
  13   tracks = []
  14   track = nil
  15   trkseg = nil
  16   anon_track = nil
  17   anon_trkseg = nil
  18
  19   @points.each do |point|
  20     if gpx_id != point.gpx_id
  21       gpx_id = point.gpx_id
  22       trackid = -1
  23
  24       if point.trace.trackable?
  25         track = {}
  26         track["trksegs"] = []
  27         tracks << track
  28
  29         if point.trace.identifiable?
  30           track["name"] = point.trace.name
  31           track["desc"] = point.trace.description
  32           track["url"] = url_for(:controller => "/traces", :action => "show", :display_name => point.trace.user.display_name, :id => point.trace.id)
  33         end
  34       else
  35         # use the anonymous track segment if the user hasn't allowed
  36         # their GPX points to be tracked.
  37         if anon_track.nil?
  38           anon_track = {}
  39           anon_track["trksegs"] = []
  40           tracks << anon_track
  41         end
  42         track = anon_track
  43       end
  44     end
  45
  46     if trackid != point.trackid
  47       if point.trace.trackable?
  48         trkseg = []
  49         track["trksegs"] << trkseg
  50         trackid = point.trackid
  51       else
  52         if anon_trkseg.nil?
  53           anon_trkseg = []
  54           anon_track["trksegs"] << anon_trkseg
  55         end
  56         trkseg = anon_trkseg
  57       end
  58     end
  59
  60     trkseg << point
  61   end
  62
  63   tracks.each do |trk|
  64     xml.trk do
  65       if trk.key?("name")
  66         xml.name trk["name"]
  67         xml.desc trk["desc"]
  68         xml.url trk["url"]
  69       end
  70       trk["trksegs"].each do |trksg|
  71         xml.trkseg do
  72           trksg.each do |tracepoint|
  73             xml.trkpt("lat" => tracepoint.lat.to_s, "lon" => tracepoint.lon.to_s) do
  74               xml.time tracepoint.timestamp.xmlschema if tracepoint.trace.trackable?
  75             end
  76           end
  77         end
  78       end
  79     end
  80   end
  81 end