* How to test the emptyness of a variable?
@ 2013-11-05 21:56 Géry Ogam
2013-11-07 12:21 ` Procházka Lukáš Ing. - Pontex s. r. o.
0 siblings, 1 reply; 8+ messages in thread
From: Géry Ogam @ 2013-11-05 21:56 UTC (permalink / raw)
To: ntg-context
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Any idea for achieving this behaviour?
- When there is a chapter label (\setuplabeltext[chapter=CHAPTER~]), display
:
CHAPTER ONE Cool
CHAPTER 2 Cat
CHAPTER 3 Mouse
etc.
- When there is no chapter label (\setuplabeltext[chapter=]), display:
1 Cool
2 Cat
3 Mouse
etc.
My try achieves the first display, but not the second one since I don’t
know how to test the emptyness of the chapter label. When I remove the
chapter label, it displays:
ONE Cool
2 Cat
3 Mouse
instead of:
1 Cool
2 Cat
3 Mouse
My code:
\setuplabeltext[chapter=CHAPTER~]
\define[1] \MyCommand{\doifelse{\currentsectioncountervalue}{1}{ONE}{#1}}
\setuphead[chapter][deepnumbercommand=\MyCommand]
\starttext
\chapter{Cool}
\chapter{Cat}
\chapter{Mouse}
\stoptext
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* Re: How to test the emptyness of a variable?
2013-11-05 21:56 How to test the emptyness of a variable? Géry Ogam
@ 2013-11-07 12:21 ` Procházka Lukáš Ing. - Pontex s. r. o.
0 siblings, 0 replies; 8+ messages in thread
From: Procházka Lukáš Ing. - Pontex s. r. o. @ 2013-11-07 12:21 UTC (permalink / raw)
To: mailing list for ConTeXt users
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Hello,
Lua way:
----
\setuplabeltext[chapter=]
\define[1]\MyCommand{\ctxcommand{doifelse(1==\currentsectioncountervalue)}{ONE}{#1}}
\setuphead[chapter][deepnumbercommand=\MyCommand]
\starttext
\chapter{Cool}
\chapter{Cat}
\chapter{Mouse}
\stoptext
----
I'm sure there is also a "cleaner" TeX way, but I'm not experienced enough for that.
Cheers,
Lukas
On Tue, 05 Nov 2013 22:56:54 +0100, Géry Ogam <maggyero@gmail.com> wrote:
> Any idea for achieving this behaviour?
>
> - When there is a chapter label (\setuplabeltext[chapter=CHAPTER~]), display
> :
>
> CHAPTER ONE Cool
> CHAPTER 2 Cat
> CHAPTER 3 Mouse
> etc.
>
> - When there is no chapter label (\setuplabeltext[chapter=]), display:
>
> 1 Cool
> 2 Cat
> 3 Mouse
> etc.
>
>
> My try achieves the first display, but not the second one since I don’t
> know how to test the emptyness of the chapter label. When I remove the
> chapter label, it displays:
>
> ONE Cool
> 2 Cat
> 3 Mouse
>
> instead of:
>
> 1 Cool
> 2 Cat
> 3 Mouse
>
>
> My code:
>
> \setuplabeltext[chapter=CHAPTER~]
> \define[1] \MyCommand{\doifelse{\currentsectioncountervalue}{1}{ONE}{#1}}
> \setuphead[chapter][deepnumbercommand=\MyCommand]
>
> \starttext
>
> \chapter{Cool}
> \chapter{Cat}
> \chapter{Mouse}
>
> \stoptext
>
--
Ing. Lukáš Procházka [mailto:LPr@pontex.cz]
Pontex s. r. o. [mailto:pontex@pontex.cz] [http://www.pontex.cz]
Bezová 1658
147 14 Praha 4
Tel: +420 241 096 751
Fax: +420 244 461 038
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\setuplabeltext[chapter=]
\define[1]\MyCommand{\ctxcommand{doifelse(1==\currentsectioncountervalue)}{ONE}{#1}}
\setuphead[chapter][deepnumbercommand=\MyCommand]
\starttext
\chapter{Cool}
\chapter{Cat}
\chapter{Mouse}
\stoptext
[-- Attachment #3: t2.pdf --]
[-- Type: application/pdf, Size: 8207 bytes --]
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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
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wiki : http://contextgarden.net
___________________________________________________________________________________
^ permalink raw reply [flat|nested] 8+ messages in thread
* Re: How to test the emptyness of a variable?
@ 2013-11-10 16:32 Géry Ogam
0 siblings, 0 replies; 8+ messages in thread
From: Géry Ogam @ 2013-11-10 16:32 UTC (permalink / raw)
To: ntg-context
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Thank you very much Aditya, now it works.
As you said, the trick was to use \doiftextelse{}{}{} function as test of
emptyness function, and \labeltext{chapter} instead of
\currentstructurelabel as variable for the test because the latter was
never found empty, even when it was.
Thus the right code for me is:
\define[1]
\MyConversion{\doifelse{\currentsectioncountervalue}{1}{\doiftextelse{\labeltext{chapter}}{ONE}{#1}}{#1}}
\defineconversion[MyConversion][\MyConversion]
\setuphead[chapter][conversion=MyConversion]
\starttext
\setuplabeltext[chapter=]
\chapter{Cool}
\chapter{Cat}
\chapter{Mouse}
\setuplabeltext[chapter=CHAPTER~]
\setupheadnumber[chapter][0]
\chapter{Cool}
\chapter{Cat}
\chapter{Mouse}
\stoptext
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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
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___________________________________________________________________________________
^ permalink raw reply [flat|nested] 8+ messages in thread
* Re: How to test the emptyness of a variable?
2013-11-07 17:45 Géry Ogam
@ 2013-11-09 19:55 ` Aditya Mahajan
0 siblings, 0 replies; 8+ messages in thread
From: Aditya Mahajan @ 2013-11-09 19:55 UTC (permalink / raw)
To: mailing list for ConTeXt users
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On Thu, 7 Nov 2013, Géry Ogam wrote:
>> I'm sure there is also a "cleaner" TeX way, but I'm not experienced
> enough for that.
>
> I think you misunderstood my issue: your Lua way does the same thing than
> my TeX way: it displays:
>
> ONE Cool
> 2 Cat
> 3 Mouse
>
> but that is NOT what I want. What I want is:
>
> 1 Cool
> 2 Cat
> 3 Mouse
>
> So I need to check if the chapter label has been set empty or not by the
> user, because it is not empty (let's say the user chose the string
> "CHAPTER~" for the chapter label) I want to display this:
>
> CHAPTER ONE Cool
> CHAPTER 2 Cat
> CHAPTER 3 Mouse
> The way to do that is to check if the variable \currentstructurelabel is
> empty, so the code must be:
Why not just check the labeltext?
\define[1]\MyConversion
{\doifelse{#1}{1}{ONE}{#1}}
\define\CheckedConversion % #1 number
{\doiftextelse{\labeltexts{chapter}}\MyConversion\numbers}
\defineconversion[CheckedConversion][\CheckedConversion]
\setuphead[chapter][conversion=CheckedConversion]
\doifmode{label}{\setuplabeltext[chapter=CHAPTER~]}
\starttext
\chapter{Cool}
\chapter{Cat}
\chapter{Mouse}
\stoptext
compile with and without --mode=label.
Aditya
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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
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archive : http://foundry.supelec.fr/projects/contextrev/
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___________________________________________________________________________________
^ permalink raw reply [flat|nested] 8+ messages in thread
* How to test the emptyness of a variable?
@ 2013-11-07 17:45 Géry Ogam
2013-11-09 19:55 ` Aditya Mahajan
0 siblings, 1 reply; 8+ messages in thread
From: Géry Ogam @ 2013-11-07 17:45 UTC (permalink / raw)
To: ntg-context
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> I'm sure there is also a "cleaner" TeX way, but I'm not experienced
enough for that.
I think you misunderstood my issue: your Lua way does the same thing than
my TeX way: it displays:
ONE Cool
2 Cat
3 Mouse
but that is NOT what I want. What I want is:
1 Cool
2 Cat
3 Mouse
So I need to check if the chapter label has been set empty or not by the
user, because it is not empty (let's say the user chose the string
"CHAPTER~" for the chapter label) I want to display this:
CHAPTER ONE Cool
CHAPTER 2 Cat
CHAPTER 3 Mouse
The way to do that is to check if the variable \currentstructurelabel is
empty, so the code must be:
\define[1]
\MyCommand{\doifelse{\currentsectioncountervalue}{1}{\doifnotemptyelse{\currentstructurelabel}{ONE}{#1}}{#1}}
\setuphead[chapter][deepnumbercommand=\MyCommand]
\starttext
\setuplabeltext[chapter=CHAPTER~]
\chapter{Cool}
\chapter{Cat}
\chapter{Mouse}
\stoptext
\starttext
\setuplabeltext[chapter=]
\chapter{Cool}
\chapter{Cat}
\chapter{Mouse}
\stoptext
But the problem is that in the second case, even if the chapter label is
set empty the command \doifnotemptyelse{\currentstructurelabel} thinks the
variable \currentstructurelabel is not empty. So there must be something
invisible in it, like a strut or something.
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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] 8+ messages in thread
* How to test the emptyness of a variable?
@ 2013-11-05 12:41 Géry Ogam
0 siblings, 0 replies; 8+ messages in thread
From: Géry Ogam @ 2013-11-05 12:41 UTC (permalink / raw)
To: ntg-context
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> you can try
>
> \doifnothing\currentstructurelabel{Do something}
It does not work in my case (even if the currenstructurelabel is empty it
acts as if it not empty). In fact I asked that to get the following
behaviour:
— When there is a chapter label (\setuplabeltext[chapter=CHAPTER~]) I want
that:
CHAPTER ONE Cool
CHAPTER 2 Cat
CHAPTER 3 Mouse
etc.
— When there is no chapter label (\setuplabeltext[chapter=]) I want that:
1 Cool
2 Cat
3 Mouse
etc.
E.g.:
\setuplabeltext[chapter=CHAPTER~]
\define[1] \MyCommand{\doifelse{\currentsectioncountervalue}{1}{ONE}{#1}}
\setuphead[chapter][deepnumbercommand=\MyCommand]
\starttext
\chapter{Cool}
\chapter{Cat}
\chapter{Mouse}
\stoptext
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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] 8+ messages in thread
* Re: How to test the emptyness of a variable?
2013-11-04 23:42 Géry Ogam
@ 2013-11-05 8:29 ` Hans Hagen
0 siblings, 0 replies; 8+ messages in thread
From: Hans Hagen @ 2013-11-05 8:29 UTC (permalink / raw)
To: ntg-context
On 11/5/2013 12:42 AM, Géry Ogam wrote:
> Hello,
>
>
> How to test if the current structure label is empty? The following
> example does not work because I don’t know how to expand the variable
> \currentstructurelabel..
>
> E.g.:
>
> \define \MyCommand{\doifempty{\currentstructurelabel}{Do something}}
you can try
\doifnothing\currentstructurelabel{Do something}
>
> Best regards.
>
>
> ___________________________________________________________________________________
> 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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Ridderstraat 27 | 8061 GH Hasselt | The Netherlands
tel: 038 477 53 69 | voip: 087 875 68 74 | www.pragma-ade.com
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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
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wiki : http://contextgarden.net
___________________________________________________________________________________
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* How to test the emptyness of a variable?
@ 2013-11-04 23:42 Géry Ogam
2013-11-05 8:29 ` Hans Hagen
0 siblings, 1 reply; 8+ messages in thread
From: Géry Ogam @ 2013-11-04 23:42 UTC (permalink / raw)
To: ntg-context
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Hello,
How to test if the current structure label is empty? The following example
does not work because I don’t know how to expand the variable
\currentstructurelabel.
E.g.:
\define \MyCommand{\doifempty{\currentstructurelabel}{Do something}}
Best regards.
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[-- Attachment #2: Type: text/plain, Size: 485 bytes --]
___________________________________________________________________________________
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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