Re: [NTG-context] Grammar to parse TeX input?
On 11/28/2018 9:33 AM, Joseph Canedo wrote:
I’d like to change some input to modify used font but only in parts of
it, for example to implement having first line with different font. So
basically if I have text with macros etc…:
% firstlines-001.tex
\setupbodyfont
[pagella]
\setupalign
[tolerant,stretch]
\setupfirstline
[alternative=line,
color=darkred,
style=\setfontfeature{smallcaps}]
\setupfirstline
[fancy]
[n=3]
\setupfirstline
[fancier]
[alternative=word,
color=darkblue,
style=bold,
n=3]
\setupfirstline
[weirder]
[alternative=line,
color=darkgreen,
style=\setfontfeature{smallcaps},
n=3]
\setupinitial
[location=text,
n=2,
color=darkred,
voffset=1.2\lineheight,
before={\blank[2*big]}]
% \enabletrackers[typesetters.firstlines,typesetters.initials]
\starttext
\setfirstline
\input ward \par
\placeinitial
\input ward \par
\setupindenting[medium,yes]
\setinitial % \placeinitial
\input ward \par
\setinitial % \placeinitial
\setfirstline
\input ward \par
\setfirstline[fancy]
\input ward \par
\setfirstline[fancier]
\input ward \par
\setinitial % \placeinitial
\setfirstline[weirder]
\input ward \par
\stoptext
-
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 / http://www.ntg.nl/mailman/listinfo/ntg-context
webpage : http://www.pragma-ade.nl / http://context.aanhet.net
archive : https://bitbucket.org/phg/context-mirror/commits/
wiki : http://contextgarden.net
___
Re: [NTG-context] Grammar to parse TeX input?
I’d like to change some input to modify used font but only in parts of it, for
example to implement having first line with different font. So basically if I
have text with macros etc…:
\WORD{i}eu \Note[]{}{Ebrieux \LeftDot 11.a.}crea au commencement le ciel et la
terre. Et la terre
estoit \Note[]{*}{{\Hebreu\Tav\He\Vav} c'est a dire/ vaine/ qui ne proffite et
ne sert a rien.}indisposee et \Note[]{*}{{\Hebreu\Bet\He\Vav} non remplie &
ornee/ de plantes et d'animaux.}vuyde/ et les tenebres estoient sus les
abysmes/ et \Note[]{*}{Selon les Ebrieux/ ou esperit: car
{\Hebreu\Dalet\Vav\Het} signifie vent & esperit.}le vent \Note[]{*}{ou/
vehement car {\Hebreu\Alef\Lamed\Resh\He\Yod\Memfinal} se prent aucunesfois
pour hault/ excellent/ & puissant.}de Dieu se demenoit par dessus les eaues.
I’d like to typeset the beginning of that using a different font BigFont (but
letting lua code to determine the position of closing brace). Ie :
{\BigFont \WORD{i}eu \Note[]{}{Ebrieux \LeftDot 11.a.}crea au commencement le
ciel et la terre.} Et la terre
estoit \Note[]{*}{{\Hebreu\Tav\He\Vav} c'est a dire/ vaine/ qui ne proffite et
ne sert a rien.}indisposee et \Note[]{*}{{\Hebreu\Bet\He\Vav} non remplie &
ornee/ de plantes et d'animaux.}vuyde/ et les tenebres estoient sus les
abysmes/ et \Note[]{*}{Selon les Ebrieux/ ou esperit: car
{\Hebreu\Dalet\Vav\Het} signifie vent & esperit.}le vent \Note[]{*}{ou/
vehement car {\Hebreu\Alef\Lamed\Resh\He\Yod\Memfinal} se prent aucunesfois
pour hault/ excellent/ & puissant.}de Dieu se demenoit par dessus les eaues.
To do this I’d need to extract the macros etc… « Worst » case scenario I’ll
write a simple adhoc lpeg grammar to parse input, but was wondering if such
grammar existed already in context lua code, or elsewhere.
Thanks
De : Hans Hagen
Envoyé le :mercredi 28 novembre 2018 09:04
À : Joseph Canedo; mailing list for ConTeXt users
Objet :Re: [NTG-context] Grammar to parse TeX input?
On 11/27/2018 11:00 PM, Joseph Canedo wrote:
> I’ve tried context.processbuffer but I am afraid it’s not what I am
> after, most probably I have not phrased clearly my question.
>
> What I am looking for is roughly what’s described in Taco’s presentation
> https://meeting.contextgarden.net/2014/talks/2014-09-12-taco-luatex/luatextalk.pdf
>
> A way to decompose some input into tokens which represent either normal
> text, csnames etc… I had a try to this token library in LuaTeX but I
> could not find examples of how to use it. I suspect that buffers
> mechanism use it somehow.
you can pick up stuff from the input so in principle you can start your
input with a token scanner, but then you not only end up with lots of
'tokens' but also need to interpret them ... and that is actually what
tex is quite effecient in and good at, so the question is: what do you
want to achieve ... there might be better ways
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
-
___
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://context.aanhet.net
archive : https://bitbucket.org/phg/context-mirror/commits/
wiki : http://contextgarden.net
___
Re: [NTG-context] Grammar to parse TeX input?
On 11/27/2018 11:00 PM, Joseph Canedo wrote: I’ve tried context.processbuffer but I am afraid it’s not what I am after, most probably I have not phrased clearly my question. What I am looking for is roughly what’s described in Taco’s presentation https://meeting.contextgarden.net/2014/talks/2014-09-12-taco-luatex/luatextalk.pdf A way to decompose some input into tokens which represent either normal text, csnames etc… I had a try to this token library in LuaTeX but I could not find examples of how to use it. I suspect that buffers mechanism use it somehow. you can pick up stuff from the input so in principle you can start your input with a token scanner, but then you not only end up with lots of 'tokens' but also need to interpret them ... and that is actually what tex is quite effecient in and good at, so the question is: what do you want to achieve ... there might be better ways 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 - ___ 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://context.aanhet.net archive : https://bitbucket.org/phg/context-mirror/commits/ wiki : http://contextgarden.net ___
Re: [NTG-context] Grammar to parse TeX input?
I’ve tried context.processbuffer but I am afraid it’s not what I am after, most
probably I have not phrased clearly my question.
What I am looking for is roughly what’s described in Taco’s presentation
https://meeting.contextgarden.net/2014/talks/2014-09-12-taco-luatex/luatextalk.pdf
A way to decompose some input into tokens which represent either normal text,
csnames etc… I had a try to this token library in LuaTeX but I could not find
examples of how to use it. I suspect that buffers mechanism use it somehow.
Thanks
De : Hans Hagen
Envoyé le :lundi 26 novembre 2018 18:55
À : mailing list for ConTeXt users; Joseph Canedo
Objet :Re: [NTG-context] Grammar to parse TeX input?
On 11/26/2018 3:19 PM, Joseph Canedo wrote:
> \startluacode
>
> function zzz_function(text)
>
> - How to process ‘text’ to get bits which are macros, groups etc… ?
> Eventually expanded ?
>
> end
>
> \stopluacode
>
> \definebuffer[ZZZBuffer]
>
> \def\StartZZZ{\grabbufferdata[ZZZBuffer][StartZZZ][StopZZZ]}
>
> \def\StopZZZ{\ctxlua{zzz_function(buffers.getcontent('ZZZBuffer'))}}
>
> \StartZZZ
>
> \input knuth
>
> \StopZZZ
context.processbuffer { "ZZZBuffer" }
-
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 / http://www.ntg.nl/mailman/listinfo/ntg-context
webpage : http://www.pragma-ade.nl / http://context.aanhet.net
archive : https://bitbucket.org/phg/context-mirror/commits/
wiki : http://contextgarden.net
___
Re: [NTG-context] Grammar to parse TeX input?
On 11/26/2018 3:19 PM, Joseph Canedo wrote:
\startluacode
function zzz_function(text)
- How to process ‘text’ to get bits which are macros, groups etc… ?
Eventually expanded ?
end
\stopluacode
\definebuffer[ZZZBuffer]
\def\StartZZZ{\grabbufferdata[ZZZBuffer][StartZZZ][StopZZZ]}
\def\StopZZZ{\ctxlua{zzz_function(buffers.getcontent('ZZZBuffer'))}}
\StartZZZ
\input knuth
\StopZZZ
context.processbuffer { "ZZZBuffer" }
-
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 / http://www.ntg.nl/mailman/listinfo/ntg-context
webpage : http://www.pragma-ade.nl / http://context.aanhet.net
archive : https://bitbucket.org/phg/context-mirror/commits/
wiki : http://contextgarden.net
___
[NTG-context] Grammar to parse TeX input?
Dear list,
I use a buffer to make some text processing. That text contains TeX macros etc…
and I’d like to know if there is some feature in lua to parse the text to
extract bits which macros, normal text etc… ?
Thanks
Best regards
Joseph
Example of pseudo MWE follows.
\startluacode
function zzz_function(text)
- How to process ‘text’ to get bits which are macros, groups etc… ? Eventually
expanded ?
end
\stopluacode
\definebuffer[ZZZBuffer]
\def\StartZZZ{\grabbufferdata[ZZZBuffer][StartZZZ][StopZZZ]}
\def\StopZZZ{\ctxlua{zzz_function(buffers.getcontent('ZZZBuffer'))}}
\StartZZZ
\input knuth
\StopZZZ
___
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://context.aanhet.net
archive : https://bitbucket.org/phg/context-mirror/commits/
wiki : http://contextgarden.net
___
