[Seaside] BOLatexWriter

[Tudor Girba]

Hi,


On 25 Sep 2011, at 08:49, Lukas Renggli wrote:

> > Thanks. In the latest version of all Grease packages and the print: method is not around in the Stream hierarchy.
> 
> Ok, then it should be added.
> 
> > So, for is it Ok to have the fix in BOLatexWriter>>visitInternalLink: by replacing stream with latex to work with print: or do you see problems there?
> 
> No, the two strams don't have te same semantics. stream print: '\' should print '\'; latex print: '\' should print '\\'.

Right. I got the difference now.

But, I still would not know how to implement GRXYZStream>>print:, because I am not sure I understand what is the difference between print: and nextPutAll:. Could anyone help with this matter?

Cheers,
Doru



> Lukas
> 
> >
> > Cheers,
> > Doru
> >
> >
> > On 24 Sep 2011, at 23:11, Lukas Renggli wrote:
> >
> >> Yes, this is intentional: 'stream' is the raw low-level stream, 'latex' is the high-level encoded stream. The choice to which you send the output is important. Changing it likely breaks the generation of valid LaTeX.
> >>
> >> GRPharoUtf8CodecStream or better its abstract superclass should implement #print:. I think this was discussed in the Seaside list recently and fixed, but I might be wrong.
> >>
> >> Lukas
> >>
> >> On Saturday, 24 September 2011, Tudor Girba <tudor at tudorgirba.com> wrote:
> >> > Hi,
> >> >
> >> > I am testing Pier 2 some more, and now I got a problem in the Latex writer. Specifically, I do not quite understand the difference between the latex instance variable and the inherited stream one.
> >> >
> >> > Take a look at the snippet below:
> >> >
> >> > BOLatexWriter>>visitInternalLink: anInternalLink
> >> >                ...
> >> >                latex tab ... square: [ stream nextPutAll: 'width='; print: ((anInternalLink parameterAt: 'width' ifAbsent: [ 100 ]) asNumber / 100.0); ... ]
> >> >
> >> > When executed on a book we have two instance variables:
> >> > - stream: instance of GRPharoUtf8CodecStream (inherited)
> >> > - latex: instance of BOLatexStream which wraps stream
> >> >
> >> > Now, it so happens that GRPharoUtf8CodecStream does not understand print:, but this method exists in BOLatexStream. I fixed the code by replacing stream with latex in the above method, and it works.
> >> >
> >> > But, there are still other places that use stream, and I think they should all use the BOLatexStream instance instead. So, my question is: Is this intentional? Or maybe should we actually simply override the setting of stream and use that one for everything?
> >> >
> >> > Cheers,
> >> > Doru
> >> >
> >> >
> >> >
> >> > --
> >> > www.tudorgirba.com
> >> >
> >> > "Yesterday is a fact.
> >> >  Tomorrow is a possibility.
> >> >  Today is a challenge."
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> >> >
> >> >
> >> >
> >> > _______________________________________________
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> >> >
> >>
> >> --
> >> Lukas Renggli
> >> www.lukas-renggli.ch
> >> _______________________________________________
> >> Magritte, Pier and Related Tools ...
> >> https://www.iam.unibe.ch/mailman/listinfo/smallwiki
> >
> > --
> > www.tudorgirba.com
> >
> > "From an abstract enough point of view, any two things are similar."
> >
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> -- 
> Lukas Renggli
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