Filetype in the non-inverted StandardHeader is 0x31
Specific header
| Offset (b) | Size (b) | Description |
| 0x20 | 0x10 | main_ID (S-SHEET; zero padded) |
| 0x30 | 4 | MCS_SubItemCount; count of items under this main_ID (usually 1) |
| 0x34 | 8 | MCS_DIRNAME ("@SSHEET"; zero padded) |
| 0x3C | 8 | MCS_ITEMNAME (FILENAME; without extension; zero padded) |
| 0x44 | 1 | MCS_DirType (0xFE) |
| 0x45 | 4 | MCS_DataLength; hint: the datatype "int" fails because of bad alignment |
| 0x49 | 3 | Unknown purpose (maybe 4-alignment), appears insignificant |
| 0x4C | 1 | 1 |
| 0x4D | 3 | CC; column count (max. 26) |
| 0x50 | 4 | { 0, 0, 0, 0 } |
| 0x54 | 4 | length the column definitions (see below) |
| 0x58 | 4 | { 0, 0, 0, 0 } |
| 0x5C | 4*CC | CDS[]; Column directory (size of the datastructure defining the whole column) |
| 0x5C+4*CC | sum of CDS[] | Column definitions; use the sizes in CDS[] to calculate the offsets to the column-definitions. |
A column definition starts with a 0x80 byte row directory.
struct ColumnDefinition
{
unsigned
char RowDirectory[0x80];
/* every bit set in this array represents an non-empty
cell, max. 999 */
struct Cell
cells[n];
/* n according to the count of non-empty cells in the
RowDirectory */
};
struct Cell{
char BCD_value[9];
char stuff[3];
/* 4-alignment, insignificant */
}
Empty columns occur in the ColumnDirectory with a SizeOfColumnDefinition=0. They have no entry in the ColumnDefinitions.
The BCD-coded value consists of a three digit exponent (base
10) and a 15 digit mantissa, giving 9 bytes. Generally 3 insignificant bytes
are added for 4-alignment.
The exponent is biased by 100, t. i. you have to subtract 100, if you want to
yield the real exponent.
F. i. 100 = 0; 098 = -2 a.s.o..
If the mantissa is negative, 500 is added to the exponent.
600123000000000000 would be -1.23
100230400000000000 would be 2.304
098456000000000000 would be 0.0456
597786000000000000 would be -0.00786
SpreadSheet-files reside in main memory. If an add-in wants to write a
SpeadSheet-file directly into main memory, special dispositions are to make.
Before calling Bfile_CreateMainMemory the
AppName has to be changed to "@SSHEET\0\0". Only thus the file is
positioned in the right directory <S-SHEET>. Furthermore SSHEET_FileHeader
must not be written! Bfile_CreateMainMemory prepares SSHEET_FileHeader
automatically.
(12.05.2012 10:29:58)