Re: Optimal way to defining of macros in Luacode in ConTeXt

[Jaroslav Hajtmar <hajtmar@gyza.cz>]

Thanx very much Hans and Wolfgang too,
I converted ALL my ConTeXt definitions (macros) with fixed numbers of 
parameters by using yours method - ie:

interfaces.definecommand {
     name      = "....",
     macro     = .....,
     arguments = {
         { "content", "string" },
         { "content", "string" },
     },
}

It is great and very easy - thanx.

Now I want convert rest of definitions (macros) - they have varied 
numbers of parameters.

Is there any similar way to do it? Suffice it to indicate how.

Thanx Jaroslav


To show what macros I want to convert, I mention these examples:

\def\opencsvfile{%
     \dosingleempty\doopencsvfile%
}

\def\doopencsvfile[#1]{%
     \dosinglegroupempty\dodoopencsvfile
}

\def\dodoopencsvfile#1{%
     \iffirstargument
     \ctxlua{thirddata.scancsv.opencsvfile("#1")}
    \else
      \ctxlua{thirddata.scancsv.opencsvfile()}
    \fi
}


or other macro etc:

% \doloopaction % implicit use \lineaction macro
% \doloopaction{\action} % use \action macro for all lines
% \doloopaction{\action}{4} % use \action macro for first 4 lines
% \doloopaction{\action}{2}{5} % use \action macro for lines from 2 to 5

\def\doloopaction{\dotriplegroupempty\doloopAction}


\def\doloopAction#1#2#3{%
\opencsvfile%
\doifsomethingelse{#3}{%3 args.
     \doloopfromto{#2}{#3}{#1}% if 3 arguments then do #1 macro from #2 
line to  #3 line
     }{%
     \doifsomethingelse{#2}{%2 args.
     \doloopfromto{1}{#2}{#1}% if 2 arguments then do #1 macro for first 
#2 lines
     }%
     {\doifsomethingelse{#1}{% 1 arg.
         \doloopfromto{-1}{-1}{#1}%
         }{% if without arguments then do \lineaction macro for all lines
         \doloopfromto{-1}{-1}{\lineaction}%
         }%
     }%
     }%
}%


Dne 13.7.2011 16:33, Wolfgang Schuster napsal(a):
> Am 13.07.2011 um 16:09 schrieb Jaroslav Hajtmar:
>
>    
>> Thanx Wolfgang,
>>
>> It looks very interesting... It can be used this method for example for macro definitions?
>>      
> It depends what you want to achieve, while you try to create many commands
> in the form \MacroXXX where each command contains some content i define
> only one command which takes the content only when requested.
>
>    
>> When I will return to the subject of this mail:
>> Can also be used for the council said Hans macros with multiple parameters?
>>
>> For example macros without parameter is no problem:
>> context.setvalue('printline',calling.luafunction(),tex.par)
>> I assume that for a more parameters cannot be used context.setvalue (...) ..
>>
>> But how to use multiple parameters when defining the macro as follows:
>> context([[\\def\\paramcontrol#1#2{%s}]],thirddata.scancsv.paramcontrol('#1', '#2'))
>>      
> Look into cldf-int.lua where you can see a method to create TeX commands
> without optional arguments from Lua.
>
> Wolfgang
>    

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