I remember the original question was " how to get the field names of
a record"
Let's assume that we can retrieve the AppInfo block from the PDB
header. If the AppInfo block is defined as
typedef struct {
UInt16 renamedCategories;
Char categoryLabels[16][16];
UInt8 categoryUniqIDs[16];
UInt8 lastUniqID;
UInt8 padding;
} AppInfoType;
as on this page:
http://www.palmos.com/dev/support/docs/fileformats/PDB+PRCFormat.html
then how is the category information related to the field
names/types/offsets/length ?
so far I'm not convinced that we can retrieve the record structure
given an arbitrary pdb along with its AppInfo block.
Wei
--- In [EMAIL PROTECTED], "Viren" <[EMAIL PROTECTED]> wrote:
> Thanks Doug for that clarification.
>
> -Viren
>
> --- In [EMAIL PROTECTED], Douglas Handy <[EMAIL PROTECTED]>
> wrote:
> > Viren,
> >
> > >Correct. But Doug, how would I know what all info is it dumping
in
> > >the AppInfoBlock or SortInfoBlock ?
> >
> > You don't have to know what or why they put something in those
> blocks, only that
> > they exist and how to get to the records. See the docs at
> >
>
http://www.palmos.com/dev/support/docs/fileformats/Intro.html#939653
> for more
> > information.
> >
> > You don't want to assume the records begin after the recordlist.
> On the above
> > page you'll find a specific warning about that:
> >
> > "IMPORTANT: There is always a gap between the final record list
> in the header
> > and the first block of data in the database, where the first
block
> might be one
> > of the following: the appInfo block, the sortInfo block, raw
record
> or resource
> > data, or the end of the file. The gap is traditionally two bytes
> long; however,
> > if you write code to parse a database, your code should be able
to
> handle any
> > size gap, from zero bytes long and up. "
> >
> > >I mean there is no way for me to
> > >know by how much do I have to increment my offset
> >
> > Start at the above page and read the documentation on the
formats.
> It is
> > possible to know...
> >
> > Doug
> >
> > --
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>
>
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