Class: KrkTimetables::Line

Inherits:
Object
  • Object
show all
Defined in:
lib/krk-timetables_line.rb

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(number, destination, url) ⇒ Line

Returns a new instance of Line.



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# File 'lib/krk-timetables_line.rb', line 5

def initialize(number, destination, url)
  @number, @destination, @departures = number, destination, {}

  # the following "r" to "t" substitution is needed to get the right page without any frames
  @url = url.gsub(/r|\.\.\//, "r" => "t", "../" => "")
end

Instance Attribute Details

#destination ⇒ Object (readonly)

Returns the value of attribute destination.



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# File 'lib/krk-timetables_line.rb', line 3

def destination
  @destination
end

#number ⇒ Object (readonly)

Returns the value of attribute number.



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# File 'lib/krk-timetables_line.rb', line 3

def number
  @number
end

Instance Method Details

#departures ⇒ Object 



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# File 'lib/krk-timetables_line.rb', line 12

def departures
  return @departures unless @departures.empty?

  departure_types = ["work_weekdays", "saturdays", "sundays"]
  departure_types.each do |type|
    @departures[type] = []
  end

  doc = Nokogiri::HTML(open(KrkTimetables::URL_PREFIX + @url))

  doc.css("table table tr").each do |row|
    next if (cells = row.css("td")).size == 3

    hour = nil

    cells.each_with_index do |cell, cell_index|
      if (hour_cell = cell.css("b").first)
        hour = hour_cell.content
      elsif not (minutes = cell.content.split).empty?
        minutes.each do |minute|
          next if minute == "-"

          type = departure_types[cell_index/2]

          @departures[type] << KrkTimetables::Departure.new(hour.to_i, minute.to_i)
        end
      end
    end
  end

  @departures
end

#type ⇒ Object 



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# File 'lib/krk-timetables_line.rb', line 45

def type
  number < 100 ? "tram" : "bus"
end