Subject:
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Re: More MPD
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Newsgroups:
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lugnet.cad.dev
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Date:
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Wed, 22 Mar 2000 16:29:58 GMT
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Viewed:
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1327 times
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I think this goes back to the discussion (from last week, I think) about
the MPD format, and if it does everything needed, and if there should be
changes to it, or a new file format. To handle nested files, and
sub-mpd files, I'd go for a new format.
This hypothetical format would be targeted to containing single models
made of multiple nested components. The sub-components within a file
would be private to that file. A model could also be made of several
multi-component files working together.
In lugnet.cad.dev, Lars C. Hassing wrote:
> 1. Are the files in an MPD public or private?
I don't *know* for sure, but I'd be willing to wager a small amount of
money that they aren't.
If someone develops a new file-spec, add an option so an multi-component
file could be referenced as either public or private, to allow libraries
of files to be developed.
> 2. I suggest BuildMpd and M-Peedy should be able to handle MPD's too
> as input files, and SplitMPD and M-Peedy should be able to split an MPD
> correctly into the original files, both MPD and DAT.
Do you mean, the builders should be able to stuff an MPD into another
MPD? This would definitely require a spec-change, either an endofdat
delimiter, or a file.subfile notation on the 0 FILE command.
> 3. Can I generally use the NOFILE meta command to skip the rest of the file,
> i.e. also for ordinary DAT files?
No. Well, you could use it, but I'd expect programs would either ignore
it, or report a syntax error.
> Should it be renamed to EOF/ENDOFFILE?
I'd prefer 0 FILE END, to match LDLite syntax for nested commands.
Which would mean we couldn't empeedy a file named END., but I think
that's a minor inconvenience.
Steve
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Message is in Reply To:
 | | More MPD [DAT]
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| 1. Are the files in an MPD public or private? Consider this example with three files: town.dat 1 16 -40 0 0 1 0 0 0 1 0 0 0 1 house1.mpd 1 16 40 0 0 1 0 0 0 1 0 0 0 1 house2.mpd house1.mpd 0 FILE house1.dat 1 4 0 0 0 1 0 0 0 1 0 0 0 1 3003.DAT 1 4 0 (...) (25 years ago, 22-Mar-00, to lugnet.cad.dev)
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