---

From: Hans Hagen [mailto:pragma@wxs.nl]
To: mailing list for ConTeXt users [mailto:ntg-context@ntg.nl]
Cc: graumann@its.caltech.edu
Sent: Tue, 29 Nov 2005 10:52:14 +0100
Subject: Re: [NTG-context] ConTeXt, XML, multiple attributes evaluation

Richard Gabriel wrote:

> Hello Johannes,
>
> I consider your first \XMLifequalelse command a bit strange. This
> command is intented to be used if you want to convert the attribute
> values into something else (e.g. "yes" into "packed").
> If you need the unmodified parameter value, simply use \XMLpar.
> So e.g.:
>
> \startitemize[ \XMLpar{list}{setup}{},
> \XMLifequalelse{list}{packed}{yes}{packed}{unpacked} ]
>
> Of course "setup" should be a required attribute of <list> (in your
> DTD), otherwise it would lead to something like \startitemize[,packed]
> which obviously wouldn't work at all.
> If it's not the case, I'd use \doifXMLparelse:
>
> \doifXMLparelse{list}{setup}{%
> \startitemize[ \XMLpar{list}{setup}{},
> \XMLifequalelse{list}{packed}{yes}{packed}{unpacked} ]%
> }{%
> \startitemize[1, \XMLifequalelse{list}{packed}{yes}{packed}{unpacked} ]
> }
>
>
> -Richard
>
>
> ------------------------------------------------------------------------
> *From:* Johannes Graumann [mailto:graumann@caltech.edu]
> *To:* ntg-context@ntg.nl
> *Sent:* Tue, 29 Nov 2005 05:30:25 +0100
> *Subject:* [NTG-context] ConTeXt, XML, multiple attributes evaluation
>
> Hello again,
>
> Another one:
> I'm trying to expand
> >\defineXMLenvironment [list]%
> > {%
> > \expanded{%
> > \startitemize%
> > [%
> > \XMLifequalelse{list}{packed}{yes}{packed}{unpacked}%
> > ]%
> > }%
> > }%
> > {\stopitemize}
>
> which can deal with things like
> ><list packed="yes">
> > <item>
> > </item>
> ></list>
>
> To something able to deal with multiple attributes (a "setup"
> statement for
> now):
> ><list packed="yes" setup="n">
> > <item>
> > </item>
> ></list>
>
> I have tryed multiple incarnations of
> >\defineXMLenvironment [list]%
> > {%
> > \expanded{%
> > \startitemize%
> > [%
> > \XMLifequalelse{list}{setup}{n}{n}{},%
> > \XMLifequalelse{list}{packed}{yes}{packed}{unpacked}%
> > ]%
> > }%
> > }%
> > {\stopitemize}
>
> but this doesn't work ...
>
> Can anybody give me any pointers here?
>

a convenient way is to use the remapper:

\mapXMLvalue {list:packed} {yes} {packed}
\mapXMLvalue {list:packed} {no} {unpacked}

and then:

\defineXMLenvironment
[list]
[packed=no]
{\startitemize[\XMLval{list:packed}{\XMLop{packed}}{}]}
{\stopitemize}

no fuzzy testing involved, just expansion (fast and clean)

Hans
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