Method: CRC::Utils#export_table

Defined in:
lib/crc/_utils.rb

#export_table(table, bitsize, linewidth, indentsize = 2) ⇒ Object 



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# File 'lib/crc/_utils.rb', line 82

def export_table(table, bitsize, linewidth, indentsize = 2)
  bitsize0 = bitsize.to_i
  indent = " " * indentsize.to_i
  case
  when bitsize0 > 64 || bitsize0 < 1
    raise "invalid bitsize (expected to 1..64, but given #{bitsize})"
  when bitsize0 > 32
    packformat = "Q>"
    hexwidth = 16
  when bitsize0 > 16
    packformat = "N"
    hexwidth = 8
  when bitsize0 > 8
    packformat = "n"
    hexwidth = 4
  else # when bitsize0 > 0
    packformat = "C"
    hexwidth = 2
  end
  table = table.to_a.pack("#{packformat}*").unpack("H*")[0]
  table.gsub!(/(?<=\w)(?=\w{#{hexwidth}}{#{linewidth}}+$)/, "\n")
  table.gsub!(/(?<=\w)(?=\w{#{hexwidth}}+$)/, " ")
  table.gsub!(/(?<=\w)(?=\s|$)/, ",")
  table.gsub!(/(?:(?<=^)|(?<=\s))(?=\w)/, "0x")
  table.gsub!(/^/, "#{indent}  ")
  <<-EOS
#{indent}TABLE = [
#{table}
#{indent}].freeze
  EOS
end