Subject:
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Re: Trouble creating building instructions using lpub and mpd file
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Newsgroups:
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lugnet.cad, lugnet.cad.mlcad
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Date:
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Sun, 10 Apr 2005 15:42:46 GMT
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Viewed:
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9934 times
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In lugnet.cad, Don Heyse wrote:
> Hmmm, I'm not sure if this effort is actually making things more
> compatible.
>
> In lugnet.cad, Lars C. Hassing wrote:
> > In lugnet.cad, Kevin L. Clague wrote:
> > > Using MLCad as a benchmark, the name with blanks is *not* enclosed
> > > in quotes. I use the remainder of the line, sans end of line as
> > > the file name.
>
> I just did a little testing myself. MLCad seems to strip off any
> whitespace (tabs and space characters) at the end of the line when
> it grabs the filename. Is that what you meant by "sans end of line"?
> I'm not sure what happens if you actually manage to create a file
> with trailing white space, something like "my file.ldr ".
I'll do the same.
>
> > > If the new L3P allows blanks in file names, I can easily remove the
> > > check. It is only in one place in the code. Once removed, the
> > > rest of the code is ready for blanks in file names.
> >
> > I am currently going through the L3P code and I have now added support
> > for filenames with spaces, both in linetype 1 and in "0 FILE xxx".
> > It now uses the rest of the line as the filename.
> > It also accepts filenames in double-quotes.
>
> Well, that's ok for l3p because it doesn't create any new ldr files.
> But MLCad doesn't seem to accept filenames in double quotes. (It
> treats the quotes as part of the filename). So what do I do if I
> want to write a program that creates new ldraw files. We now have
> some programs that accept filenames in double-quotes and treat the
> remainder of the line as comments. We have some programs that accept
> everything but trailing whitespace as the filename. And we have some
> other programs that try to do both. It's still an incompatible mess.
> How about an official recommendation from ldraw.org?
>
> FWIW, I prefer the quotes because it's less ambiguous. Consider the
> possibility that you might want a meta command where the filename is
> in the middle. When you don't use the quotes you don't know where the
> filename ends and the meta command picks up. Kevin, I think this may
> be a problem with the way you were planning on using the MLCAD group
> command.
Hi Don,
Nice post.
GROUP commands are defined outside the LDraw spec, but I'd guess that the
naming issues are the same. I just made a minor change to:
0 PLIST BEGIN SUB <file> // depricated
0 LPUB PLI BEGIN SUB <file>
This original version supports sub-model files within the working directory.
I now allow a variant format:
0 LPUB PLI BEGIN SUB <color> <file>
Where you can specify an alternate LDraw part (e.g. retracted pistons instead of
extended pistons.) This part requires a color. I put color first for two
reasons:
1. This is the same order specified in a type 1 text line.
2. It supports blanks in file names without the need for double quotes.
The only strike against double quotes is backward compatibility. Isn't it too
late to make this a requirement?
Kevin
>
> Anyhow, that's my 2 cents. Have fun,
>
> Don
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