Method: Spreadsheet::Excel::Reader#read_bof

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

#read_bof ⇒ Object 



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# File 'lib/spreadsheet/excel/reader.rb', line 165

def read_bof
  # Offset  Size  Contents
  #      0     2  BIFF version (always 0x0600 for BIFF8)
  #      2     2  Type of the following data: 0x0005 = Workbook globals
  #                                           0x0006 = Visual Basic module
  #                                           0x0010 = Worksheet
  #                                           0x0020 = Chart
  #                                           0x0040 = Macro sheet
  #                                           0x0100 = Workspace file
  #      4     2  Build identifier
  #      6     2  Build year
  #      8     4  File history flags
  #     12     4  Lowest Excel version that can read all records in this file
  _, @bof, _, work = get_next_chunk
  ## version and datatype are common to all Excel-Versions. Later versions
  #  have additional information such as build-id and -year (from BIFF5).
  #  These are ignored for the time being.
  version, datatype = work.unpack("v2")
  if datatype == 0x5
    @version = version
  end
end