[NTG-context] xmldoif: checking for contents of attribute

[NTG-context] xmldoif: checking for contents of attribute

[denis.maier]

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Hi,

I'm trying to check whether an attribute contains (or, actually starts with) a given string.
I've tried a whole bunch of different combinations, but I've had no luck so far. Minimal example below. Anyone has a hint?

Best,
Denis


%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
\startxmlsetups xml:test
                \xmlsetsetup{#1}{*}{-}
                \xmlsetsetup{#1}{doc|element}{xml:*}
\stopxmlsetups

\xmlregisterdocumentsetup{test}{xml:test}


\startxmlsetups xml:doc
\xmlflush{#1}
\stopxmlsetups

\startxmlsetups xml:element
\xmlfilter{#1}{./find(attribute('class'), 'abc')/command(xml:whatever)}

\xmldoifelse{#1}{./attribute('class')/contains('abc')} {Yes}{No}
\stopxmlsetups

\startxmlsetups xml:whatever
Yes
\stopxmlsetups

\startbuffer[test]
<?xml version="1.0" encoding="UTF-8"?>
<doc>
<element class="abcdefg">Yes</element>
<element>No</element>
</doc>
\stopbuffer

\starttext

\xmlprocessbuffer{test}{test}{}

\stoptext

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[NTG-context] Re: xmldoif: checking for contents of attribute

[Thomas A. Schmitz]

One way would be to do the search in Lua; when you have multiple searches to perform, that may be the easiest way to go. For example:

\startxmlsetups xml:test
                \xmlsetsetup{#1}{*}{-}
                \xmlsetsetup{#1}{doc|element}{xml:*}
\stopxmlsetups
 
\xmlregisterdocumentsetup{test}{xml:test}
 
\startxmlsetups xml:doc
\xmlflush{#1}
\stopxmlsetups
 
\startxmlsetups xml:element
	 \xmlfunction {#1} {element}
\stopxmlsetups
 
\startluacode
function xml.functions.element (t)
	 if t.at.class and t.at.class:find ("abc") then
			context.startcolor { "blue" }
			lxml.flush (t)
			context.stopcolor ()
	 else
			context.startcolor { "red" }
			lxml.flush (t)
			context.stopcolor ()
	 end
end
\stopluacode 
 
\startbuffer[test]
<?xml version="1.0" encoding="UTF-8"?>
<doc>
<element class="abcdefg">Yes</element>
<element>No</element>
</doc>
\stopbuffer
 
\starttext
 
\xmlprocessbuffer{test}{test}{}
 
\stoptext

Hope that gets you started.

Thomas

> On 24. Aug 2023, at 16:11, denis.maier@unibe.ch wrote:
> 
> Hi,
>  I’m trying to check whether an attribute contains (or, actually starts with) a given string.
> I’ve tried a whole bunch of different combinations, but I’ve had no luck so far. Minimal example below. Anyone has a hint?
>  Best,
> Denis
>   %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
> \startxmlsetups xml:test
>                 \xmlsetsetup{#1}{*}{-}
>                 \xmlsetsetup{#1}{doc|element}{xml:*} \stopxmlsetups
>  \xmlregisterdocumentsetup{test}{xml:test}
>   \startxmlsetups xml:doc
> \xmlflush{#1}
> \stopxmlsetups
>  \startxmlsetups xml:element
> \xmlfilter{#1}{./find(attribute('class'), 'abc')/command(xml:whatever)}
>  \xmldoifelse{#1}{./attribute('class')/contains('abc')} {Yes}{No}
> \stopxmlsetups
>  \startxmlsetups xml:whatever
> Yes
> \stopxmlsetups
>  \startbuffer[test]
> <?xml version="1.0" encoding="UTF-8"?>
> <doc>
> <element class="abcdefg">Yes</element>
> <element>No</element>
> </doc>
> \stopbuffer
>  \starttext
>  \xmlprocessbuffer{test}{test}{}
>  \stoptext


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[NTG-context] Re: xmldoif: checking for contents of attribute

[Hans Hagen]

On 8/24/2023 4:11 PM, denis.maier@unibe.ch wrote:
> Hi,
> 
> I'm trying to check whether an attribute contains (or, actually starts with) a given string.
> I've tried a whole bunch of different combinations, but I've had no luck so far. Minimal example below. Anyone has a hint?
> 
> Best,
> Denis
> 
> 
> %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
> \startxmlsetups xml:test
>                  \xmlsetsetup{#1}{*}{-}
>                  \xmlsetsetup{#1}{doc|element}{xml:*}
> \stopxmlsetups
> 
> \xmlregisterdocumentsetup{test}{xml:test}
> 
> 
> \startxmlsetups xml:doc
> \xmlflush{#1}
> \stopxmlsetups
> 
> \startxmlsetups xml:element
> \xmlfilter{#1}{./find(attribute('class'), 'abc')/command(xml:whatever)}
> 
> \xmldoifelse{#1}{./attribute('class')/contains('abc')} {Yes}{No}
> \stopxmlsetups
> 
> \startxmlsetups xml:whatever
> Yes
> \stopxmlsetups
> 
> \startbuffer[test]
> <?xml version="1.0" encoding="UTF-8"?>
> <doc>
> <element class="abcdefg">Yes</element>
> <element>No</element>
> </doc>
> \stopbuffer
> 
> \starttext
> 
> \xmlprocessbuffer{test}{test}{}
> 
> \stoptext
\xmldoifelse{#1}{.[@class and contains(@class,'abc')]}{Yes}{No}
\xmldoifelse{#1}{.[@class and find(@class,"abc")]}{Yes}{No}


-----------------------------------------------------------------
                                           Hans Hagen | PRAGMA ADE
               Ridderstraat 27 | 8061 GH Hasselt | The Netherlands
        tel: 038 477 53 69 | www.pragma-ade.nl | www.pragma-pod.nl
-----------------------------------------------------------------

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___________________________________________________________________________________

[NTG-context] Re: xmldoif: checking for contents of attribute

[denis.maier]

> -----Ursprüngliche Nachricht-----
> Von: Hans Hagen <j.hagen@xs4all.nl>
> Gesendet: Donnerstag, 24. August 2023 16:54
> An: ntg-context@ntg.nl
> Betreff: [NTG-context] Re: xmldoif: checking for contents of attribute
> 
> On 8/24/2023 4:11 PM, denis.maier@unibe.ch wrote:
> > Hi,
> >
> > I'm trying to check whether an attribute contains (or, actually starts with) a
> given string.


> \xmldoifelse{#1}{.[@class and contains(@class,'abc')]}{Yes}{No}
> \xmldoifelse{#1}{.[@class and find(@class,"abc")]}{Yes}{No}

Thanks for your help. I can use that, but why is this sort of double-checking necessary here?

\startxmlsetups xml:test
	\xmlsetsetup{#1}{*}{-}
	\xmlsetsetup{#1}{doc|element}{xml:*}	
\stopxmlsetups

\xmlregisterdocumentsetup{test}{xml:test}

\startxmlsetups xml:doc
\xmlflush{#1}
\stopxmlsetups

\startxmlsetups xml:element
1 \xmldoifelse{#1}{.[@class and contains(@class,'abc')]}{Yes}{No} \par
2 \xmldoifelse{#1}{.[@class and find(@class,"abc")]}{Yes}{No} \par
3 \xmldoifelse{#1}{.[True and contains(@class,'abc')]}{Yes}{No} \par % runs, but no match
4 \xmldoifelse{#1}{.[True and find(@class,"abc")]}{Yes}{No} \par % run, but no match
% 5 \xmldoifelse{#1}{.[contains(@class,'abc')]}{Yes}{No} \par % causes an error
% 6 \xmldoifelse{#1}{.[find(@class,"abc")]}{Yes}{No} \par % causes an error

\stopxmlsetups

\startxmlsetups xml:whatever
Yes
\stopxmlsetups

\startbuffer[test]
<?xml version="1.0" encoding="UTF-8"?>
<doc>
<element class="abcdefg">Yes</element>
<element>No</element>
</doc>
\stopbuffer

\starttext

\xmlprocessbuffer{test}{test}{}

\stoptext
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___________________________________________________________________________________

[NTG-context] Re: xmldoif: checking for contents of attribute

[denis.maier]

> -----Ursprüngliche Nachricht-----
> Von: Thomas A. Schmitz <thomas.schmitz@uni-bonn.de>
> Gesendet: Donnerstag, 24. August 2023 16:35
> An: mailing list for ConTeXt users <ntg-context@ntg.nl>
> Betreff: [NTG-context] Re: xmldoif: checking for contents of attribute
> 
> 
> One way would be to do the search in Lua; when you have multiple searches
> to perform, that may be the easiest way to go. For example:
> 
...
> 
> Hope that gets you started.
> 
> Thomas

Thank you, Thomas. Yes, that get's me started. But same question applies this solution too: Why do you need to double check? (I guess the answer will probably be the same.)

Anyway, it looks like I should really look more into Lua as this will probably make a few things much easier.

Best,
Denis
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[NTG-context] Re: xmldoif: checking for contents of attribute

[Hans Hagen]

On 8/25/2023 8:22 AM, denis.maier@unibe.ch wrote:

> Thanks for your help. I can use that, but why is this sort of double-checking necessary here?

because containsa in a function that has checking while find is just the 
lua find .. so i've added a check in that one too now but no upload

Hans

-----------------------------------------------------------------
                                           Hans Hagen | PRAGMA ADE
               Ridderstraat 27 | 8061 GH Hasselt | The Netherlands
        tel: 038 477 53 69 | www.pragma-ade.nl | www.pragma-pod.nl
-----------------------------------------------------------------

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___________________________________________________________________________________

[NTG-context] Re: xmldoif: checking for contents of attribute

[denis.maier]

> -----Ursprüngliche Nachricht-----
> Von: Hans Hagen <j.hagen@xs4all.nl>
> Gesendet: Freitag, 25. August 2023 09:06
> An: Maier, Denis Christian (UB) <denis.maier@unibe.ch>; mailing list for
> ConTeXt users <ntg-context@ntg.nl>
> Betreff: Re: [NTG-context] Re: xmldoif: checking for contents of attribute
> 
> On 8/25/2023 8:22 AM, denis.maier@unibe.ch wrote:
> 
> > Thanks for your help. I can use that, but why is this sort of double-checking
> necessary here?
> 
> because containsa in a function that has checking while find is just the lua find
> .. so i've added a check in that one too now but no upload
> 

So, that would mean that the double checking is only necessary for find, not for contains. And indeed the example below works.
Is that correct or are there any unwanted side-effects?

\startxmlsetups xml:test
	\xmlsetsetup{#1}{*}{-}
	\xmlsetsetup{#1}{doc|element}{xml:*}	
\stopxmlsetups

\xmlregisterdocumentsetup{test}{xml:test}

\startxmlsetups xml:doc
\xmlflush{#1}
\stopxmlsetups

\startxmlsetups xml:element
1 \xmldoifelse{#1}{.[contains(@class,'abc')]}{Yes}{No} \par
2 \xmldoifelse{#1}{.[@class and find(@class,'abc')]}{Yes}{No} \par % runs, but no match

\stopxmlsetups

\startxmlsetups xml:whatever
Yes
\stopxmlsetups

\startbuffer[test]
<?xml version="1.0" encoding="UTF-8"?>
<doc>
<element class="abcdefg">Yes</element>
<element>No</element>
</doc>
\stopbuffer

\starttext

\xmlprocessbuffer{test}{test}{}

\stoptext


___________________________________________________________________________________
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maillist : ntg-context@ntg.nl / https://www.ntg.nl/mailman/listinfo/ntg-context
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___________________________________________________________________________________

[NTG-context] Re: xmldoif: checking for contents of attribute

[Hans Hagen]

On 8/25/2023 1:45 PM, denis.maier@unibe.ch wrote:
>> -----Ursprüngliche Nachricht-----
>> Von: Hans Hagen <j.hagen@xs4all.nl>
>> Gesendet: Freitag, 25. August 2023 09:06
>> An: Maier, Denis Christian (UB) <denis.maier@unibe.ch>; mailing list for
>> ConTeXt users <ntg-context@ntg.nl>
>> Betreff: Re: [NTG-context] Re: xmldoif: checking for contents of attribute
>>
>> On 8/25/2023 8:22 AM, denis.maier@unibe.ch wrote:
>>
>>> Thanks for your help. I can use that, but why is this sort of double-checking
>> necessary here?
>>
>> because containsa in a function that has checking while find is just the lua find
>> .. so i've added a check in that one too now but no upload
>>
> 
> So, that would mean that the double checking is only necessary for find, not for contains. And indeed the example below works.
> Is that correct or are there any unwanted side-effects?
correct and in the next upload i'll also catch the find

-----------------------------------------------------------------
                                           Hans Hagen | PRAGMA ADE
               Ridderstraat 27 | 8061 GH Hasselt | The Netherlands
        tel: 038 477 53 69 | www.pragma-ade.nl | www.pragma-pod.nl
-----------------------------------------------------------------

___________________________________________________________________________________
If your question is of interest to others as well, please add an entry to the Wiki!

maillist : ntg-context@ntg.nl / https://www.ntg.nl/mailman/listinfo/ntg-context
webpage  : https://www.pragma-ade.nl / http://context.aanhet.net
archive  : https://bitbucket.org/phg/context-mirror/commits/
wiki     : https://contextgarden.net
___________________________________________________________________________________