Re: [NTG-context] xml and lua again
On 22-10-2011 18:46, Thomas A. Schmitz wrote:
Hi all,
again, I'm playing a bit with processing my xml in lua. I want a simple
interface for processing tables (I don't need all the power and
complexity of cals tables and want to learn something in the process).
And I thought that collecting the setups in lua might be the easiest
way, but so far, I haven't been successful. Here's an example:
\startbuffer[test]
a
nattable frame=on
tr
td1/td
td2/td
td3/td
td4/td
/tr
tr
td5/td
td6/td
td7/td
td8/td
/tr
/nattable
/a
\stopbuffer
\startxmlsetups xml:testsetups
\xmlsetsetup{main}{a|nattable|tr|td|}{xml:*}
\stopxmlsetups
\xmlregistersetup{xml:testsetups}
\startxmlsetups xml:a
\xmlflush{#1}
\stopxmlsetups
\startxmlsetups xml:nattable
\startluacode
framestate = lxml.att(#1, frame)
context(framestate)
context(true)
context.placefigure( { here }, none , function()
context.setupTABLE( { frame=on } )
context.bTABLE()
context.xmlflush(#1)
context.eTABLE()
end)
\stopluacode
\stopxmlsetups
\startxmlsetups xml:tr
\startluacode
context.bTR()
context.xmlflush(#1)
context.eTR()
\stopluacode
\stopxmlsetups
\startxmlsetups xml:td
\startluacode
context.bTD()
context.xmlflush(#1)
context.eTD()
\stopluacode
\stopxmlsetups
\starttext
\xmlprocessbuffer{main}{test}{}
\stoptext
question: I have the value on in the lua variable framestate. But
how can I pass this on to the line
context.setupTABLE( { frame=on } )?
I tried something like
context.setupTABLE( { frame= .. framestate } )
but that doesn't work. Any suggestions?
why so complex
\startbuffer[test]
a
nattable frame=on
tr
td1/td
td2/td
td3/td
td4/td
/tr
tr
td5/td
td6/td
td7/td
td8/td
/tr
/nattable
nattable frame=off
tr
td1/td
td2/td
td3/td
td4/td
/tr
tr
td5/td
td6/td
td7/td
td8/td
/tr
/nattable
nattable frame=no
tr
td1/td
td2/td
td3/td
td4/td
/tr
tr
td5/td
td6/td
td7/td
td8/td
/tr
/nattable
/a
\stopbuffer
\startxmlsetups xml:testsetups
\xmlsetsetup{main}{a|nattable|tr|td|}{xml:*}
\stopxmlsetups
\xmlregistersetup{xml:testsetups}
\startxmlsetups xml:a
\xmlflush{#1}
\stopxmlsetups
\xmlmapvalue {nattable:frame} {on} {on}
\xmlmapvalue {nattable:frame} {yes} {on}
\xmlmapvalue {nattable:frame} {off} {off}
\xmlmapvalue {nattable:frame} {no} {off}
\startxmlsetups xml:nattable
\placefigure
[here,none]
{}
{
\setupTABLE[frame=\xmlval{nattable:frame}{\xmlatt{#1}{frame}}{on}]
\bTABLE
\xmlflush{#1}
\eTABLE
}
\stopxmlsetups
\startxmlsetups xml:tr
\bTR
\xmlflush{#1}
\eTR
\stopxmlsetups
\startxmlsetups xml:td
\bTD
\xmlflush{#1}
\eTD
\stopxmlsetups
\starttext
\xmlprocessbuffer{main}{test}{}
\stoptext
In x-cals.lua / mkiv you can see an example of pure lua solution. It
boils down to applying a function the the whole table element.
Hans
-
Hans Hagen | PRAGMA ADE
Ridderstraat 27 | 8061 GH Hasselt | The Netherlands
tel: 038 477 53 69 | voip: 087 875 68 74 | www.pragma-ade.com
| www.pragma-pod.nl
-
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Re: [NTG-context] processing style inside verbatim in XML
On 21-10-2011 22:18, Mojca Miklavec wrote:
Hello,
Is there any simple way to typeset the following example properly in ConTeXt?
I have an example of text that has to obey lines and spaces, but I
would like to apply some color to make it more readable. The
attachment contains an example of HTML which displays fine in my
browser, and it should look similar with ConTeXt.
I have problems with literal typesetting ofspan class=... (that
should have applied style instead), but maybe I only have wrong
settings in my parser.
When I use \xmlsetfunction{main}{pre}{lxml.displayverbatim}, then I
cannot color the numbers. When I use, according to Wolfgang's
suggestion,
\startxmlsetups pre
\setuplines[style=mono,space=yes]
\startlines
\xmlflush{#1}
\stoplines
\stopxmlsetups
then all the spaces are eaten up by XML parser (or somewhere else), so
that I don't get the desired result. Any ideas about this?
I'm also sending a self-contained example with \setuplines which
doesn't really work in the desired way.
The next beta will provide two extra flushers. The following patch to
your example seems to work ok then.
\startxmlsetups all:html
\xmlsetsetup{main}{head|h1|pre|span}{*}
\stopxmlsetups
\xmlmapval{span}{n}{\bf\red}
\startxmlsetups span
\start
\xmlval{span}{\xmlatt{#1}{class}}{}
\xmlflush{#1}
\stop
\stopxmlsetups
\startxmlsetups pre
\start \tttf
%\xmlflush{#1}
%\xmlflushlinewise{#1}
\xmlflushspacewise{#1}
\stop
\stopxmlsetups
Hans
-
Hans Hagen | PRAGMA ADE
Ridderstraat 27 | 8061 GH Hasselt | The Netherlands
tel: 038 477 53 69 | voip: 087 875 68 74 | www.pragma-ade.com
| www.pragma-pod.nl
-
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Re: [NTG-context] xml and lua again
On 10/24/2011 12:17 PM, Hans Hagen wrote: why so complex Hi Hans, yes, I'm aware that this procedure is quite silly for this example, this was just for myself, for educational purposes. As soon as the setup becomes more complex, I thought it might be easier to collect and process the options in lua than in tex (as I have done before), but I'm running against a wall here (see my exchange with Peter about goat milk yesterday). So the real question is: how can I collect data such as an attribute value to process it with lua, say in the form if lxml.att(t, frame) == on then context(Yes, the frame is really on!) else context(Nope, sorry, it's still off.) end I don't really understand what kind of object a call such as lxml.att(t, frame) produces. All best Thomas ___ If your question is of interest to others as well, please add an entry to the Wiki! maillist : ntg-context@ntg.nl / http://www.ntg.nl/mailman/listinfo/ntg-context webpage : http://www.pragma-ade.nl / http://tex.aanhet.net archive : http://foundry.supelec.fr/projects/contextrev/ wiki : http://contextgarden.net ___
Re: [NTG-context] xml and lua again
On 24-10-2011 14:18, Thomas A. Schmitz wrote: On 10/24/2011 12:17 PM, Hans Hagen wrote: why so complex Hi Hans, yes, I'm aware that this procedure is quite silly for this example, this was just for myself, for educational purposes. As soon as the setup becomes more complex, I thought it might be easier to collect and process the options in lua than in tex (as I have done before), but I'm running against a wall here (see my exchange with Peter about goat milk yesterday). So the real question is: how can I collect data such as an attribute value to process it with lua, say in the form if lxml.att(t, frame) == on then context(Yes, the frame is really on!) else context(Nope, sorry, it's still off.) end I don't really understand what kind of object a call such as lxml.att(t, frame) produces. all lxml.* calls print something to tex, so when you're at the lua end and want to stay there you should use the xml.* methods; also, when you have an element, say e then there is an e.at table that has all attributes - Hans Hagen | PRAGMA ADE Ridderstraat 27 | 8061 GH Hasselt | The Netherlands tel: 038 477 53 69 | voip: 087 875 68 74 | www.pragma-ade.com | 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 / http://www.ntg.nl/mailman/listinfo/ntg-context webpage : http://www.pragma-ade.nl / http://tex.aanhet.net archive : http://foundry.supelec.fr/projects/contextrev/ wiki : http://contextgarden.net ___
Re: [NTG-context] Links in exported XHTML file
On 21-10-2011 11:27, Andreas Harder wrote:
\setupinteraction[state=start]
\setupbackend[export=yes,xhtml=yes,css=export-example.css]
\starttext
\useURL[google][http://www.google.com/][][Google] \from[google]
\textreference[txt:ref]{some text} \in[txt:ref] % OK
\goto{Google}[url(http://www.google.com/)]
\stoptext
in next beta
-
Hans Hagen | PRAGMA ADE
Ridderstraat 27 | 8061 GH Hasselt | The Netherlands
tel: 038 477 53 69 | voip: 087 875 68 74 | www.pragma-ade.com
| www.pragma-pod.nl
-
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Re: [NTG-context] Image compression/resizing in PDFs
On 21-10-2011 11:54, John Devereux wrote:
Hi all,
Is there a way to have context automatically compress or resample
included images to a given output resolution? I have not been following
recent developments...
I can obviously pre-reduce all images to the desired dpi. But:
1) This is a bit of work (and hard to get non-technical people to do)
2) In 5 years time we might want the images to be higher resolution and
not be as concerned about PDF size. But the information will be lost (or
be elsewhere).
So a command line or document setting would be ideal, is there such a
thing? \setpdfimageresolution[300dpi].
You can plug in a converter:
\startluacode
figures.converters[png] = {
[lowres.png] = function(oldname,newname,resolution)
os.execute(string.format('gm convert -depth 1 %s
%s',oldname,newname))
end,
}
-- the following is automatic in next beta
figures.suffixes[lowres.png] = figures.suffixes.png
\stopluacode
And then use:
\starttext
\externalfigure[mill.png][conversion=lowres.png]
\stoptext
downsamples images are cached so the overhead is minimal
Hans
-
Hans Hagen | PRAGMA ADE
Ridderstraat 27 | 8061 GH Hasselt | The Netherlands
tel: 038 477 53 69 | voip: 087 875 68 74 | www.pragma-ade.com
| www.pragma-pod.nl
-
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Re: [NTG-context] Image compression/resizing in PDFs
downsamples images are cached so the overhead is minimal Is caching based only on the figure name? If I change the original figure, will the cached figure be updated? Aditya ___ If your question is of interest to others as well, please add an entry to the Wiki! maillist : ntg-context@ntg.nl / http://www.ntg.nl/mailman/listinfo/ntg-context webpage : http://www.pragma-ade.nl / http://tex.aanhet.net archive : http://foundry.supelec.fr/projects/contextrev/ wiki : http://contextgarden.net ___
Re: [NTG-context] Image compression/resizing in PDFs
On 24-10-2011 16:29, Aditya Mahajan wrote: downsamples images are cached so the overhead is minimal Is caching based only on the figure name? If I change the original figure, will the cached figure be updated? Sure, local oldtime = lfs.attributes(oldname,'modification') or 0 local newtime = lfs.attributes(newname,'modification') or 0 if newtime == 0 or oldtime newtime then In fact it's just integration of old resource library code (ruby stuff that happened between runs). Hans - Hans Hagen | PRAGMA ADE Ridderstraat 27 | 8061 GH Hasselt | The Netherlands tel: 038 477 53 69 | voip: 087 875 68 74 | www.pragma-ade.com | 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 / http://www.ntg.nl/mailman/listinfo/ntg-context webpage : http://www.pragma-ade.nl / http://tex.aanhet.net archive : http://foundry.supelec.fr/projects/contextrev/ wiki : http://contextgarden.net ___
[NTG-context] Anand Raj wants to chat
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Re: [NTG-context] xml and lua again
On 10/24/2011 02:26 PM, Hans Hagen wrote: if lxml.att(t, frame) == on then context(Yes, the frame is really on!) else context(Nope, sorry, it's still off.) end I don't really understand what kind of object a call such as lxml.att(t, frame) produces. all lxml.* calls print something to tex, so when you're at the lua end and want to stay there you should use the xml.* methods; also, when you have an element, say e then there is an e.at table that has all attributes OK, excuse me for being particularly thick today: there doesn't seem to be xml.att, only xml.attribute, so it should be something like: function tableinit(t) if xml.attribute(t, /, frame, off) == on then context(Yes, the framestate is really on!) else context(Nope, sorry, it's still off.) end end (if I understand the definition of xml.attribute correctly: id,pattern,a,default)? Thomas ___ If your question is of interest to others as well, please add an entry to the Wiki! maillist : ntg-context@ntg.nl / http://www.ntg.nl/mailman/listinfo/ntg-context webpage : http://www.pragma-ade.nl / http://tex.aanhet.net archive : http://foundry.supelec.fr/projects/contextrev/ wiki : http://contextgarden.net ___
[NTG-context] How do I test for empty labeltext?
Hello,
The following code
\setuplabeltext[test=]
test is \doifemptyelse{\labeltext{test}}{empty}{not empty}
doesn't work as intended for the reasons that I approximately
understand (not exactly, but I understand that there might be a lot of
weird stuff returned when I ask for labeltext). However I have no idea
how to check if text is empty or not.
As an exception :) :) :), MKIV hints should be highly appreciated and
enough for this particular application.
Mojca
PS: the extended example looks approximately as follows:
\def\document#1#2{
\setuplabeltext[name={{#1}},company={{#2}}]
\startstandardmakeup
\setups{content}
\setups{decoration}
\stopstandardmakeup
}
\startsetups content
This is for \labeltext{name}%
\doifemptyelse{\labeltext{company}}{.}{, working for \labeltext{company}.}
\stopsetups
I have no problem changing the complete code and I can already find a
workaround by defining some new if inside definition of \document,
but I'm still slightly curious to know how to test for existence of a
label. The sources contain
definelabels(setuplabeltext, data.texts, true)
and it is not too clear to me how to decrypt the rest with too much pain.
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Re: [NTG-context] How do I test for empty labeltext?
On 24-10-2011 19:41, Mojca Miklavec wrote:
Hello,
The following code
\setuplabeltext[test=]
test is \doifemptyelse{\labeltext{test}}{empty}{not empty}
doesn't work as intended for the reasons that I approximately
understand (not exactly, but I understand that there might be a lot of
weird stuff returned when I ask for labeltext). However I have no idea
how to check if text is empty or not.
As an exception :) :) :), MKIV hints should be highly appreciated and
enough for this particular application.
an empty test is always somewhat special as there can be an unexpandable
macro inside that eventually expands to nothing
you can try \doiftextelse instead
-
Hans Hagen | PRAGMA ADE
Ridderstraat 27 | 8061 GH Hasselt | The Netherlands
tel: 038 477 53 69 | voip: 087 875 68 74 | www.pragma-ade.com
| www.pragma-pod.nl
-
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Re: [NTG-context] xml and lua again
On 24-10-2011 19:00, Thomas A. Schmitz wrote: On 10/24/2011 02:26 PM, Hans Hagen wrote: if lxml.att(t, frame) == on then context(Yes, the frame is really on!) else context(Nope, sorry, it's still off.) end I don't really understand what kind of object a call such as lxml.att(t, frame) produces. all lxml.* calls print something to tex, so when you're at the lua end and want to stay there you should use the xml.* methods; also, when you have an element, say e then there is an e.at table that has all attributes OK, excuse me for being particularly thick today: there doesn't seem to be xml.att, only xml.attribute, so it should be something like: function tableinit(t) if xml.attribute(t, /, frame, off) == on then context(Yes, the framestate is really on!) else context(Nope, sorry, it's still off.) end end (if I understand the definition of xml.attribute correctly: id,pattern,a,default)? sure, oryou can play with if xml.filter(t,.[@frame=on]) then the x-*.lua show some tricks Hans - Hans Hagen | PRAGMA ADE Ridderstraat 27 | 8061 GH Hasselt | The Netherlands tel: 038 477 53 69 | voip: 087 875 68 74 | www.pragma-ade.com | 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 / http://www.ntg.nl/mailman/listinfo/ntg-context webpage : http://www.pragma-ade.nl / http://tex.aanhet.net archive : http://foundry.supelec.fr/projects/contextrev/ wiki : http://contextgarden.net ___
[NTG-context] Question about chapter headings
I'm trying to set up a chapter heading which looks like this:
Chapter 4
This is the fourth chapter
That is, there are two lines, one of which says Chapter followed by its
number, and the next which is the chapter title. What is the easiest way to
do this? I've tried
\def\chap#1#2{Chapter #1\crlf #2}
\setuphead[chapter][
command=\chap,
style=bfc,
after={\blank[1cm]},
]
But this doesn't work (and nor do many other variations in the chap
command). I'm a bit stymied here - and I'd welcome some advice.
Thanks,
Alasdair
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