Re: [NTG-context] How to test the emptyness of a variable?

2013-11-10 Thread Géry Ogam
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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Re: [NTG-context] How to test the emptyness of a variable?

2013-11-09 Thread Aditya Mahajan

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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Re: [NTG-context] How to test the emptyness of a variable?

2013-11-07 Thread Procházka Lukáš Ing . - Pontex s . r . o .

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 maggy...@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:l...@pontex.cz]
Pontex s. r. o.  [mailto:pon...@pontex.cz] [http://www.pontex.cz]
Bezová 1658
147 14 Praha 4

Tel: +420 241 096 751
Fax: +420 244 461 038

t2.mkiv
Description: Binary data


t2.pdf
Description: Adobe PDF document
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Re: [NTG-context] How to test the emptyness of a variable?

2013-11-05 Thread Hans Hagen

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.


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