Class: UPowerDataSource

Inherits:
Object
  • Object
show all
Defined in:
lib/battery/upower_data_source.rb

Defined Under Namespace

Classes: Boolean, UPowerCommand

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(options = {}) ⇒ UPowerDataSource

Returns a new instance of UPowerDataSource.



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# File 'lib/battery/upower_data_source.rb', line 7

def initialize( options = {} )
  self.upower_command = options[:upower_command] || UPowerCommand.new
  update
end

Instance Attribute Details

#upower_command ⇒ Object

Returns the value of attribute upower_command.



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# File 'lib/battery/upower_data_source.rb', line 5

def upower_command
  @upower_command
end

Instance Method Details

#charging? ⇒ Boolean

Returns:



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# File 'lib/battery/upower_data_source.rb', line 44

def charging?
  fetch( 'state' ) == 'charging'
end

#design_max_energy_wh ⇒ Object 



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# File 'lib/battery/upower_data_source.rb', line 64

def design_max_energy_wh
  fetch( 'energy-full-design', :as => Float )
end

#discharging? ⇒ Boolean

Returns:



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# File 'lib/battery/upower_data_source.rb', line 48

def discharging?
  fetch( 'state' ) == 'discharging'
end

#energy_left ⇒ Object 



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# File 'lib/battery/upower_data_source.rb', line 56

def energy_left
  fetch( 'percentage', :as => Float ) / 100.0
end

#energy_left_wh ⇒ Object 



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# File 'lib/battery/upower_data_source.rb', line 60

def energy_left_wh
  fetch( 'energy', :as => Float )
end

#fully_charged? ⇒ Boolean

Returns:



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# File 'lib/battery/upower_data_source.rb', line 52

def fully_charged?
  fetch( 'state' ) == 'fully-charged'
end

#has_history? ⇒ Boolean

Returns:



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# File 'lib/battery/upower_data_source.rb', line 32

def has_history?
  fetch( 'has history', :as => Boolean )
end

#has_stats? ⇒ Boolean

Returns:



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# File 'lib/battery/upower_data_source.rb', line 36

def has_stats?
  fetch( 'has statistics', :as => Boolean )
end

#last_update ⇒ Object 



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# File 'lib/battery/upower_data_source.rb', line 28

def last_update
  fetch( 'updated', :as => DateTime )
end

#max_energy_wh ⇒ Object 



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# File 'lib/battery/upower_data_source.rb', line 68

def max_energy_wh
  fetch( 'energy-full', :as => Float )
end

#model ⇒ Object 



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# File 'lib/battery/upower_data_source.rb', line 16

def model
  fetch( 'model' )
end

#present? ⇒ Boolean

Returns:



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# File 'lib/battery/upower_data_source.rb', line 40

def present?
  fetch( 'present', :as => Boolean )
end

#serial ⇒ Object 



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# File 'lib/battery/upower_data_source.rb', line 20

def serial
  fetch( 'serial' )
end

#technology ⇒ Object 



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# File 'lib/battery/upower_data_source.rb', line 24

def technology
  fetch( 'technology' )
end

#update ⇒ Object 



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# File 'lib/battery/upower_data_source.rb', line 76

def update
  output = upower_command.exec
  first_battery = output.scan( /Device:.*battery_.*\n((.|\n)+)\n(Daemon:|Device:)/ )
  first_battery = first_battery.first.first rescue ''
  first_battery_rows = first_battery.strip.split( /$/ ).map( &:strip ).reject{ |r| !r.include?( ':' ) }
  first_battery_key_value_array = first_battery_rows.map{ |r| r.split( ':', 2 ) }.flatten.map( &:strip )
  @values = Hash[*first_battery_key_value_array]
end

#vendor ⇒ Object 



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# File 'lib/battery/upower_data_source.rb', line 12

def vendor
  fetch( 'vendor' )
end

#voltage ⇒ Object 



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# File 'lib/battery/upower_data_source.rb', line 72

def voltage
  fetch( 'voltage', :as => Float )
end