Re: [VCDImager Bugs/Devel] some XML/DTD questions

[Herbert Valerio Riedel]

[just a short answer since I don't have enough time right now,]

please checkout cvs, I've done some work on it lately... I'm still working
on it, so it's not final at all...

On Tue, 8 May 2001, Matto Marjanovic wrote:

>
> Heya,
>
> I actually have started hacking around with parsing XML.  Not the steepest
>  learning curve, but certainly not a downhill trot.  Anyhow, I've got a
>  couple of questions (i.e. complaints) with regards to the 'videocd.dtd'
>  in CVS:
>
>  o Why does the 'selection' element require an IDREF attribute?
>     (I can't imagine what it is even referencing.)
>  o The 'selection' element should have one optional 'item' child,
>     not many.  (i.e. item?, not item*)
>  o What about numeric events for 'selection'?  That's missing altogether.
>     Something along the lines of:
>
>      <!ELEMENT numeric EMPTY>
>      <!ATTLIST numeric
>        ref      IDREF     #REQUIRED
>        num      CDATA     #REQUIRED
>      >
>
>  o Ok, a more complicated question:  should 'bsn' be implicit or explicit.
>     I'm assuming (I should test this) that the BSN is the "number" for the
>     first entry in the list of numeric selections; thus, if someone presses
>     '5', the vcd player follows  numeric_selection[5-BSN].
>    So, you could specify numeric selections in the conf file by:
>      a)  Give the BSN followed by a sequence of (unnumbered) list references.
>          If you want blanks/unassigned numbers, you need to somehow specify
>            a 'numeric' element with no reference.
>     OR
>      b)  Give a sequence of numbered list references, not necessarily in
>           any order.  The BSN is computed on the fly (from the minimum),
>           and the continuous sequence (possibly with blanks) is constructed.
>
>    (a) directly records what is in the selection list record on disk.
>    (b) does more to capture the semantic content of what it is supposed to do.
>
>    Opinions?
>
>
> -matt m.
>
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