Method: Spreadsheet::Excel::Workbook#biff_version

Defined in:
lib/spreadsheet/excel/workbook.rb

#biff_version ⇒ Object 



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# File 'lib/spreadsheet/excel/workbook.rb', line 51

def biff_version
  case @bof
  when 0x009
    2
  when 0x209
    3
  when 0x409
    4
  else
    BIFF_VERSIONS.fetch(@version) { raise "Unkown BIFF_VERSION '#@version'" }
  end
end