* Check the character after a macro
@ 2015-05-01 16:56 Sam Ḥilluc
2015-05-01 17:38 ` Otared Kavian
0 siblings, 1 reply; 5+ messages in thread
From: Sam Ḥilluc @ 2015-05-01 16:56 UTC (permalink / raw)
To: ntg-context
Hello,
Is it possible to check (in a macro definition) if the character following the
macro is included in a set of characters?
Something that could work like this:
\def\MyMacro#1{%
\ifNextCharIn{abcd} \dothis%
\else \dothat%
\fi%
}
Cheers.
___________________________________________________________________________________
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
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___________________________________________________________________________________
^ permalink raw reply [flat|nested] 5+ messages in thread
* Re: Check the character after a macro
2015-05-01 16:56 Check the character after a macro Sam Ḥilluc
@ 2015-05-01 17:38 ` Otared Kavian
2015-05-01 18:41 ` Sam Ḥilluc
0 siblings, 1 reply; 5+ messages in thread
From: Otared Kavian @ 2015-05-01 17:38 UTC (permalink / raw)
To: mailing list for ConTeXt users
Hi,
You have several commands in ConTeXt doing what you are seeking to do: please look at the examples below:
%%% begin do-if-inset.tex
\starttext
\type{\doifinset{A}{A,B,C}{should go}:} \doifinset{A}{A,B,C}{should go}
\type{\doifinset{D}{A,B,C}{should go}:} \doifinset{D}{A,B,C}{should participate}
\type{\doifnotinset{}{A,B,C}{not in the set}:} \doifnotinset{}{A,B,C}{not in the set}
\type{\doifnotinset{D}{A,B,C}{not in the set}:} \doifnotinset{D}{A,B,C}{not in the set}
\doifinsetelse{D}{A,B,C}{it is in the set}{it is not in the set}
\define\test{B}
\type{\doifinsetelse{\test}{A,B,C}{\test\ is in the set}{\test\ is not in the set}}
\doifinsetelse{\test}{A,B,C}{\test\ is in the set}{\test\ is not in the set}
\stoptext
%%% end do-if-inset.tex
Best regards: OK
> On 01 May 2015, at 18:56, Sam Ḥilluc <shilluc@gmx.com> wrote:
>
> Hello,
>
> Is it possible to check (in a macro definition) if the character following the
> macro is included in a set of characters?
>
> Something that could work like this:
>
> \def\MyMacro#1{%
> \ifNextCharIn{abcd} \dothis%
> \else \dothat%
> \fi%
> }
>
> Cheers.
> ___________________________________________________________________________________
> 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
> ___________________________________________________________________________________
___________________________________________________________________________________
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
___________________________________________________________________________________
^ permalink raw reply [flat|nested] 5+ messages in thread
* Re: Check the character after a macro
2015-05-01 17:38 ` Otared Kavian
@ 2015-05-01 18:41 ` Sam Ḥilluc
2015-05-01 19:10 ` Wolfgang Schuster
0 siblings, 1 reply; 5+ messages in thread
From: Sam Ḥilluc @ 2015-05-01 18:41 UTC (permalink / raw)
To: mailing list for ConTeXt users
On 2015-05-01 19:38, Otared Kavian wrote:
> Hi,
>
> You have several commands in ConTeXt doing what you are seeking to do: please look at the examples below:
>
> %%% begin do-if-inset.tex
> \starttext
> \type{\doifinset{A}{A,B,C}{should go}:} \doifinset{A}{A,B,C}{should go}
>
> \type{\doifinset{D}{A,B,C}{should go}:} \doifinset{D}{A,B,C}{should participate}
>
>
> \type{\doifnotinset{}{A,B,C}{not in the set}:} \doifnotinset{}{A,B,C}{not in the set}
>
> \type{\doifnotinset{D}{A,B,C}{not in the set}:} \doifnotinset{D}{A,B,C}{not in the set}
>
> \doifinsetelse{D}{A,B,C}{it is in the set}{it is not in the set}
>
> \define\test{B}
>
> \type{\doifinsetelse{\test}{A,B,C}{\test\ is in the set}{\test\ is not in the set}}
>
> \doifinsetelse{\test}{A,B,C}{\test\ is in the set}{\test\ is not in the set}
> \stoptext
> %%% end do-if-inset.tex
>
> Best regards: OK
This works for testing if a given character is in a set, but how can I retrieve
that character just after the defined macro.
To give an example, a macro that adds a dot if the next character is not a
comma.
\MyMacro{text1} text2 -> text1. text2
\MyMacro{text1}, text2 -> text1, text2
Thanks.
___________________________________________________________________________________
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
___________________________________________________________________________________
^ permalink raw reply [flat|nested] 5+ messages in thread
* Re: Check the character after a macro
2015-05-01 18:41 ` Sam Ḥilluc
@ 2015-05-01 19:10 ` Wolfgang Schuster
2015-05-01 21:53 ` Sam Ḥilluc
0 siblings, 1 reply; 5+ messages in thread
From: Wolfgang Schuster @ 2015-05-01 19:10 UTC (permalink / raw)
To: mailing list for ConTeXt users
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> Am 01.05.2015 um 20:41 schrieb Sam Ḥilluc <shilluc@gmx.com>:
>
> On 2015-05-01 19:38, Otared Kavian wrote:
>> Hi,
>>
>> You have several commands in ConTeXt doing what you are seeking to do: please look at the examples below:
>>
>> %%% begin do-if-inset.tex
>> \starttext
>> \type{\doifinset{A}{A,B,C}{should go}:} \doifinset{A}{A,B,C}{should go}
>>
>> \type{\doifinset{D}{A,B,C}{should go}:} \doifinset{D}{A,B,C}{should participate}
>>
>>
>> \type{\doifnotinset{}{A,B,C}{not in the set}:} \doifnotinset{}{A,B,C}{not in the set}
>>
>> \type{\doifnotinset{D}{A,B,C}{not in the set}:} \doifnotinset{D}{A,B,C}{not in the set}
>>
>> \doifinsetelse{D}{A,B,C}{it is in the set}{it is not in the set}
>>
>> \define\test{B}
>>
>> \type{\doifinsetelse{\test}{A,B,C}{\test\ is in the set}{\test\ is not in the set}}
>>
>> \doifinsetelse{\test}{A,B,C}{\test\ is in the set}{\test\ is not in the set}
>> \stoptext
>> %%% end do-if-inset.tex
>>
>> Best regards: OK
>
> This works for testing if a given character is in a set, but how can I retrieve
> that character just after the defined macro.
>
> To give an example, a macro that adds a dot if the next character is not a
> comma.
>
> \MyMacro{text1} text2 -> text1. text2
> \MyMacro{text1}, text2 -> text1, text2
You can use the \doifelsenextchar command to check the character after your command.
\define[1]\MyMacro
{\doifelsenextchar{,}
{#1}
{#1. }}
\starttext
\MyMacro{left} right
\MyMacro{left}, right
\stoptext
The limitation of this method is that you check only for one character at a time
and when want to check for more you have to use multiple \doifelsenextchar lines.
\doifelsenextchar{,}
{...}
{\doifelsenextchar{.}
{...}
{...}}
Wolfgang
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___________________________________________________________________________________
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
___________________________________________________________________________________
^ permalink raw reply [flat|nested] 5+ messages in thread
* Re: Check the character after a macro
2015-05-01 19:10 ` Wolfgang Schuster
@ 2015-05-01 21:53 ` Sam Ḥilluc
0 siblings, 0 replies; 5+ messages in thread
From: Sam Ḥilluc @ 2015-05-01 21:53 UTC (permalink / raw)
To: mailing list for ConTeXt users
On 2015-05-01 21:10, Wolfgang Schuster wrote:
> You can use the \doifelsenextchar command to check the character after your command.
>
> \define[1]\MyMacro
> {\doifelsenextchar{,}
> {#1}
> {#1. }}
>
> \starttext
>
> \MyMacro{left} right
>
> \MyMacro{left}, right
>
> \stoptext
>
>
> The limitation of this method is that you check only for one character at a time
> and when want to check for more you have to use multiple \doifelsenextchar lines.
>
> \doifelsenextchar{,}
> {...}
> {\doifelsenextchar{.}
> {...}
> {...}}
>
> Wolfgang
It worked, thanks.
___________________________________________________________________________________
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
___________________________________________________________________________________
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2015-05-01 16:56 Check the character after a macro Sam Ḥilluc
2015-05-01 17:38 ` Otared Kavian
2015-05-01 18:41 ` Sam Ḥilluc
2015-05-01 19:10 ` Wolfgang Schuster
2015-05-01 21:53 ` Sam Ḥilluc
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