The Microsoft Excel File Format - OpenOffice.org

10 Workspace Documents
10 Workspace Documents
2do
10.1 Workspace Stream
10.1.1 Workbook Stream (BIFF4W)
The whole BIFF4W workbook file consists of the Workbook Stream. It contains the global workbook data in the
Workbook Globals Substream, and a list of worksheets, the Sheet Substreams.
The Workbook Globals Substream contains common information about the workbook, for instance text encoding, global
view settings or a list of all sheet names. Additionally each workbook holds a SHEETSOFFSET record.
The data of the sheets is stored in Sheet Substreams, which are embedded in the Workbook Globals Substream. Each
substream is preceded with a SHEETHDR record which contains the name of the sheet and the size of the following
substream. The SHEETSOFFSET record mentioned above contains the stream position of the first SHEETHDR record.
Each substream is a complete BIFF4 Worksheet Stream (➜4.1.1).
Common structure of the Workspace Stream, BIFF4W:
● BOF Type = workbook globals
Global workbook records
● SHEETSOFFSET Position of the first SHEETHDR record (➜10.5)
Global workbook records
○○
● SHEETHDR Sheet name, length of following substream (➜10.4)
● BOF Type = sheet, chart, macro sheet
●●
Embedded BIFF4 Sheet Substream, ➜4.1.1
●
●
EOF
EOF
Structure of the Worksheet Protection Block, BIFF4W:
○ PROTECT Worksheet contents: 1 = protected (➜5.82)
○ WINDOWPROTECT Window settings: 1 = protected (➜5.111)
○ OBJECTPROTECT Embedded objects: 1 = protected (➜5.72)
○ SCENPROTECT Scenarios: 1 = protected (➜5.91)
○ PASSWORD Hash value of the password; 0 = no password (➜5.76)
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