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patch 'props' from Nirgal Vourgère

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Brian Bruns
2011-02-16 18:58:02 -05:00
parent fa83ed0af0
commit 6696edf1f8
10 changed files with 198 additions and 278 deletions
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39
HACKING
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@@ -669,36 +669,33 @@ read is stored, once the index search has been exhausted by the normal search
routine, it enters a "clean up mode" and reads the next leaf page pointer until
it's null.
KKD Records
-----------
Properties
----------
Design View table definitions appear to be stored in 'KKD' records (my name for
them...they always start with 'KKD\0'). Again these reside on pages, packed to
the end of the page.
Design View table definitions are stored in LvProp column of MSysObjects as OLE
fields. They contain default values, description, format, required ...
Update: The KKD records are stored in LvProp column of MSysObjects so they are
stored as other OLE/Memo fields are.
They start with a 32 bits header: 'KKD\0' in Jet3 and 'MR2\0' in Jet 4.
They look a little like this: (this needs work...see the kkd.c)
Next come chunks. Each chunk starts with:
32 bits length value (this includes the length)
16 bits chunk type (0x00 0x80 contains the names, 0x00 0x00 and 0x00 0x01 contain
the values)
'K' 'K' 'D' 0x00
16 bit length value (this includes the length)
0x00 0x00
0x80 0x00 (0x80 seems to indicate a header)
Then one or more of: 16 bit length field and a value of that size.
Name chunks (0x00 0x80) simply contains occurences of:
16 bit name length
name
For instance:
0x0d 0x00 and 'AccessVersion' (AccessVersion is 13 bytes, 0x0d 0x00 intel order)
Next comes one of more rows of data. (column names, descriptions, etc...)
Next comes one of more chunk of data:
16 bit length value (this includes the length)
0x00 0x00
0x00 0x00
16bit length field (this include the length itself)
4 bytes of unknown purpose
16 bit length field (non-inclusive)
value (07.53 for the AccessVersion example above)
8 bit type
16 bit name (index in the name array of above chunk 0x00 0x80)
16 bit length field (non-inclusive)
value (07.53 for the AccessVersion example above)
See kkd.c for an example, although it needs cleanup.
See props.c for an example.
Text Data Type