Class: WeatherReportObservation

Inherits:
Object
  • Object
show all
Includes:
WeatherReportLocation
Defined in:
lib/weather_report.rb

Overview

The current weather observations (at least at the time of reading - given by attribute reading_date)

Constant Summary collapse

DESCRIPTION = 
/(.*)Temperature: ([-\d\.]+|N\/A|NA|\(none\))(.+)Wind Direction: ([\w -\/\(\)]*), Wind Speed: ([-\d\.]+|N\/A|NA|\(none\))([ ]*)mph, Relative Humidity: ([\d\.]+|N\/A|NA|\(none\))(.*), Pressure: ([\d\.]+|N\/A|NA|\(none\))mB, ([\w -\/]+), Visibility: ([\w -\/]+)/
SUMMARY = 
/(.+):(\W+)([\w -\/\(\)]+). (.+)/m

Constants included from WeatherReportLocation

WeatherReportLocation::TITLE

Instance Attribute Summary collapse

Attributes included from WeatherReportLocation

#country, #latitude, #longtitude, #name

Instance Method Summary collapse

Methods included from WeatherReportLocation

#loadLocation

Constructor Details

#initialize(document) ⇒ WeatherReportObservation

Constructs the weather observation from an XML string or file containing the XML in BBC Backstage weather format



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# File 'lib/weather_report.rb', line 98

def initialize(document)
  doc = REXML::Document.new document
  
  loadLocation(doc)
  @reading_date = DateTime.now
  doc.elements.each("rss/channel/item[1]/title[1]") { |element| 
    md = SUMMARY.match(element.text)
    @description = md[3]
  }
    
  hasDesc = false
  doc.elements.each("rss/channel/item[1]/description[1]") { |element| 
    hasDesc = true
    md = DESCRIPTION.match(element.text)
    @temperature = md[2].to_f
    @wind_direction = md[4]
    @wind_speed = md[5].to_f * 1.61
    @humidity = md[7].to_f
    @pressure = md[9].to_f
    @pressure_state = md[10]
    @visibility = md[11]
  }
  raise WeatherReport::WeatherReportFormatError unless hasDesc
  
  rescue
    raise WeatherReport::WeatherReportFormatError
end

Instance Attribute Details

#description ⇒ Object (readonly)

Returns the value of attribute description.



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# File 'lib/weather_report.rb', line 95

def description
  @description
end

#humidity ⇒ Object (readonly)

Returns the value of attribute humidity.



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# File 'lib/weather_report.rb', line 95

def humidity
  @humidity
end

#pressure ⇒ Object (readonly)

Returns the value of attribute pressure.



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# File 'lib/weather_report.rb', line 95

def pressure
  @pressure
end

#pressure_state ⇒ Object (readonly)

Returns the value of attribute pressure_state.



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# File 'lib/weather_report.rb', line 95

def pressure_state
  @pressure_state
end

#reading_date ⇒ Object (readonly)

Returns the value of attribute reading_date.



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# File 'lib/weather_report.rb', line 95

def reading_date
  @reading_date
end

#temperature ⇒ Object (readonly)

Returns the value of attribute temperature.



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# File 'lib/weather_report.rb', line 95

def temperature
  @temperature
end

#visibility ⇒ Object (readonly)

Returns the value of attribute visibility.



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# File 'lib/weather_report.rb', line 95

def visibility
  @visibility
end

#wind_direction ⇒ Object (readonly)

Returns the value of attribute wind_direction.



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# File 'lib/weather_report.rb', line 95

def wind_direction
  @wind_direction
end

#wind_speed ⇒ Object (readonly)

Returns the value of attribute wind_speed.



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# File 'lib/weather_report.rb', line 95

def wind_speed
  @wind_speed
end