Class: Fusuma::Device::LineParser

Inherits:
Object
  • Object
show all
Defined in:
lib/fusuma/device.rb

Overview

parse line and generate devices

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize ⇒ LineParser

Returns a new instance of LineParser.



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# File 'lib/fusuma/device.rb', line 66

def initialize
  @lines = []
end

Instance Attribute Details

#lines ⇒ Object (readonly)

Returns the value of attribute lines.



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# File 'lib/fusuma/device.rb', line 64

def lines
  @lines
end

Instance Method Details

#generate_devices ⇒ Object 



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# File 'lib/fusuma/device.rb', line 75

def generate_devices
  device = nil
  lines.each_with_object([]) do |line, devices|
    device ||= Device.new
    device = parse(device: device, line: line)
    if device.available
      devices << device
      device = nil
    end
  end
end

#id_from(line) ⇒ Object 



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# File 'lib/fusuma/device.rb', line 99

def id_from(line)
  line.match('^Kernel:[[:space:]]*') do |m|
    m.post_match.match(/event[0-9]+/).to_s
  end
end

#name_from(line) ⇒ Object 



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# File 'lib/fusuma/device.rb', line 105

def name_from(line)
  line.match('^Device:[[:space:]]*') do |m|
    m.post_match.strip
  end
end

#natural_scroll_is_available?(line) ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/fusuma/device.rb', line 111

def natural_scroll_is_available?(line)
  return false unless line =~ /^Nat.scrolling: /
  return false if line =~ %r{n/a}
  true
end

#parse(device:, line:) ⇒ Device

Returns:



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# File 'lib/fusuma/device.rb', line 88

def parse(device:, line:)
  if (id = id_from(line))
    device.id = id
  elsif (name = name_from(line))
    device.name = name
  elsif (available = natural_scroll_is_available?(line))
    device.available = available
  end
  device
end

#push(line) ⇒ Object

Parameters:

  • line (String) 


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# File 'lib/fusuma/device.rb', line 71

def push(line)
  lines.push(line)
end