Ruby dmidecode

dmi.rb

require 'json'

def standardize_key(k)
  k.downcase.gsub(/\s+/,'_')
end

def read_dmi
  data=`dmidecode`

  dict={}
  handle = 0
  current_title = nil

  data.lines.each do |line|
    case line
    when /^End Of Table/, /^\s+$/, /^\# dmidecode/, /^SMBIOS/, /structures occupying/, /^Table at/
      next
    when /^Handle\s+(.*?),\s+/
      handle = $1.to_i(16)
    when /(.*)\s+Information\n$/, /(.*)\s+Device\n$/, /(.*)\s+Device Mapped Address\n$/, /(.*)\s+Array Mapped Address\n$/, /Physical\s+(.*)\s+Array\n$/
      title = standardize_key($1)
      current_title = title
      dict[title] ||= []
      dict[title] << {'handle' => handle}
    else
      raw_data = line.strip.split(':')
      if raw_data.is_a?(Array) && raw_data.length == 2
        k, v = raw_data
        dict[current_title].last[standardize_key(k)] = v.strip
      end
    end
  end
  dict
end

puts JSON.pretty_generate(read_dmi)