Class: GpxRuby::Gpx::Parsers::TrackParser

Inherits:
Object
  • Object
show all
Defined in:
lib/gpx_ruby/gpx/parsers/track_parser.rb

Instance Method Summary collapse

Constructor Details

#initialize(gpx_node) ⇒ TrackParser

Returns a new instance of TrackParser.



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# File 'lib/gpx_ruby/gpx/parsers/track_parser.rb', line 9

def initialize(gpx_node)
  @gpx_node = gpx_node
end

Instance Method Details

#parse ⇒ Object 



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# File 'lib/gpx_ruby/gpx/parsers/track_parser.rb', line 13

def parse
  tracks = []
  if track_nodes = @gpx_node.xpath('./xmlns:trk')
    # iterate over all tracks
    track_nodes.each do |trk|
      trk_segments = trk.xpath('./xmlns:trkseg')

      # map track segments for this track
      track_segments = trk_segments.map do |trkseg|

        # map all track points for this track segment
        track_points = trkseg.xpath('./xmlns:trkpt').map do |trkpt|

          lat = trkpt.at_xpath('./@lat').value.to_f
          lon = trkpt.at_xpath('./@lon').value.to_f

          time = begin
            DateTime.xmlschema(trkpt.at_xpath('./xmlns:time').text).to_time
          rescue
            nil
          end

          elevation =  begin
            trkpt.at_xpath('./xmlns:ele').text.to_f
          rescue
            nil
          end

          Track::Point.new lat: lat, lon: lon, time: time, elevation: elevation
        end

        Track::Segment.new track_points
      end

      trk_name = begin
        trk.at_xpath('./xmlns:name').text
      rescue
        nil
      end

      trk_cmt = begin
        trk.at_xpath('./xmlns:cmt').text
      rescue
        nil
      end

      trk_src = begin
        trk.at_xpath('./xmlns:src').text
      rescue
        nil
      end

      trk_desc = begin
        trk.at_xpath('./xmlns:desc').text
      rescue
        nil
      end

      trk_number = begin
        trk.at_xpath('./xmlns:number').text
      rescue
        nil
      end

      trk_url = begin
        trk.at_xpath('./xmlns:url').text
      rescue
        nil
      end

      trk_url_name = begin
        trk.at_xpath('./xmlns:urlname').text
      rescue
        nil
      end

      trk_time = begin
        DateTime.xmlschema(trk.at_xpath('./xmlns:time').text).to_time
      rescue
        nil
      end

      track_hash = {
          segments: track_segments,
          name: trk_name,
          time: trk_time,
          source: trk_src,
          description: trk_desc,
          number: trk_number,
          comment: trk_cmt,
          url: trk_url,
          url_name: trk_url_name
      }

      tracks << Track.new(track_hash)
    end

  end

  tracks
end