Module: StateMate::Adapters::NVRAM

Includes:
StateMate::Adapters
Defined in:
lib/state_mate/adapters/nvram.rb

Constant Summary

Constants included from StateMate::Adapters

API_METHOD_NAMES, DEFAULT_KEY_SEP

Class Method Summary collapse

Methods included from StateMate::Adapters

get, included, register

Class Method Details

.read(key, options = {}) ⇒ Object 



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# File 'lib/state_mate/adapters/nvram.rb', line 12

def self.read key, options = {}
  result = Cmds "nvram %{key}", key: key

  if result.error?
    if result.err.start_with? "nvram: Error getting variable"
      return nil
    end
    result.assert
  end

  if m = /^#{ key }\t(.*)\n$/.match(result.out)
    m[1]
  else
    raise binding.erb <<-BLOCK
      can't parse output for key <%= key.inspect %>:

        cmd: <%= result.cmd %>

        output: <%= result.out.inspect %>
    BLOCK
  end
end

.write(key, value, options = {}) ⇒ Object 



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# File 'lib/state_mate/adapters/nvram.rb', line 35

def self.write key, value, options = {}
  unless value.is_a? String
    raise "value must be a String, not #{ value.inspect }"
  end

  Cmds! "sudo nvram #{ key }='#{ value }'"
end