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