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 69

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 67

def lines
  @lines
end

Instance Method Details

#available_from(line) ⇒ Object 



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# File 'lib/fusuma/device.rb', line 120

def available_from(line)
  # NOTE: is natural scroll available?
  if line =~ /^Nat.scrolling: /
    return false if line =~ %r{n/a}

    return true # disabled / enabled
  end
  nil
end

#extract_attribute(line:) ⇒ Hash

Parameters:

Returns:



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# File 'lib/fusuma/device.rb', line 96

def extract_attribute(line:)
  if (id = id_from(line))
    { id: id }
  elsif (name = name_from(line))
    { name: name }
  elsif (available = available_from(line))
    { available: available }
  else
    {}
  end
end

#generate_devices ⇒ Array

Returns:

  • (Array) 


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# File 'lib/fusuma/device.rb', line 79

def generate_devices
  lines.each_with_object([]) do |line, devices|
    attributes = extract_attribute(line: line)

    next if attributes == {}

    if attributes[:name]
      # when detected new line including device name
      devices << Device.new # next device
    end

    devices.last.assign_attributes(attributes) unless devices.empty?
  end
end

#id_from(line) ⇒ Object 



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# File 'lib/fusuma/device.rb', line 108

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 114

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

#push(line) ⇒ Object

Parameters:



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# File 'lib/fusuma/device.rb', line 74

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