How to "\processcommalist"?

How to "\processcommalist"?

[Mojca Miklavec]

I would like to define a command, which would be called in the following way:
    \TheBossWantsTheWorkToBeDoneOn[monday,wednesday,thursday]{tidy up}

so that it would be equivalent to:
    \WeHaveToDo[monday]{tidy up}
    \WeHaveToDo[wednesday]{tidy up}
    \WeHaveToDo[thursday]{tidy up}

I played a bit with different variants of \processcommalist, but I
can't figure out how to use it in this particular case.

Is there also a possibility to define a command like
    \IHaveToDoTheTasks[1-4,7,9-11]{until tomorrow}

which would expand into
    \IHaveToDoTheTask[1]{until tomorrow}
    \IHaveToDoTheTask[2]{until tomorrow}
    \IHaveToDoTheTask[3]{until tomorrow}
    \IHaveToDoTheTask[4]{until tomorrow}
    \IHaveToDoTheTask[7]{until tomorrow}
    \IHaveToDoTheTask[9]{until tomorrow}
    \IHaveToDoTheTask[10]{until tomorrow}
    \IHaveToDoTheTask[11]{until tomorrow}
?

Thanks for any suggestions,
    Mojca

Re: How to "\processcommalist"?

[Taco Hoekwater]

Mojca Miklavec wrote:
> I would like to define a command, which would be called in the following way:
>     \TheBossWantsTheWorkToBeDoneOn[monday,wednesday,thursday]{tidy up}
> 
> so that it would be equivalent to:
>     \WeHaveToDo[monday]{tidy up}
>     \WeHaveToDo[wednesday]{tidy up}
>     \WeHaveToDo[thursday]{tidy up}
> 
> I played a bit with different variants of \processcommalist, but I
> can't figure out how to use it in this particular case.

The trick is to store the tidy up inside the processing command,
like so:

   \def\WeHaveToDo[#1]#2{\message{(#1: #2)}}

   \def\TheBossWantsTheWorkToBeDoneOn[#1]#2%
     {\begingroup
      \def\processitem##1{\WeHaveToDo[##1]{#2}}%
      \processcommalist[#1]\processitem
      \endgroup }

   \TheBossWantsTheWorkToBeDoneOn[monday,wednesday,thursday]{tidy up}


> Is there also a possibility to define a command like
>     \IHaveToDoTheTasks[1-4,7,9-11]{until tomorrow}

There was not, but knowing Hans I trust that soon there will be :-).

For now, here is my solution.

   % a few auxiliary core macros are needed to uncompress the list.
   %
   % \uncompresslist is the twin of the already existing \compresslist
   % which works in the other direction (syst-new)
   %
   \unprotect

   % I guess this function is already available but couldnt find it...
   %
   \def\apptomac#1#2%
     {\ifx#1\empty\def#1{#2}\else \@EA\def\@EA#1\@EA{#1,#2}\fi}

   % the next macro does this:
   %
   % \itemwithdash<<9-11>>- => \dorecurse {<<1+11-9>>}
   %     {\apptomac\uncompressedlist<<9-1+\recurselevel>>}
   %
   % (the 1+ and -1 are needed to solve a counter offset.)
   \def\itemwithdash#1-#2-%
     {\@EA\dorecurse\@EA
       {\the\numexpr 1+#2-#1\relax}%
       {\@EA\apptomac\@EA\uncompressedlist\@EA
         {\the\numexpr #1-1+\recurselevel\relax}}}%

   % top level. The result will be in \uncompressedlist
   \def\uncompresslist[#1]%
     {\def\uncompressedlist{}%
      \def\processitem##1%
        {\doifinstringelse{-}{##1}
          {\itemwithdash##1-}
          {\apptomac\uncompressedlist{##1}}}%
      \processcommalist[#1]\processitem }

   \protect

   % end support macros.

With these, you can do:

   \def\IHaveToDoTheTask[#1]#2{\message{(#1: #2)}}

   \def\IHaveToDoTheTasks[#1]#2%
     {\begingroup
      \def\processitem##1{\IHaveToDoTheTask[##1]{#2}}%
      \uncompresslist[#1]% <= Yeah!
      \processcommacommand[\uncompressedlist]\processitem
      \endgroup }

I hope you understand what I've done, but otherwise, feel
free to ask, of course.

Greetings, Taco

Re: How to "\processcommalist"?

[Mojca Miklavec]

Taco Hoekwater wrote:
> Mojca Miklavec wrote:
> > I would like to define a command, which would be called in the following way:
> >     \TheBossWantsTheWorkToBeDoneOn[monday,wednesday,thursday]{tidy up}
> >
> > so that it would be equivalent to:
> >     \WeHaveToDo[monday]{tidy up}
> >     \WeHaveToDo[wednesday]{tidy up}
> >     \WeHaveToDo[thursday]{tidy up}
> >
> > I played a bit with different variants of \processcommalist, but I
> > can't figure out how to use it in this particular case.
> 
> The trick is to store the tidy up inside the processing command,
> like so:
> 
>    \def\WeHaveToDo[#1]#2{\message{(#1: #2)}}
> 
>    \def\TheBossWantsTheWorkToBeDoneOn[#1]#2%
>      {\begingroup
>       \def\processitem##1{\WeHaveToDo[##1]{#2}}%
>       \processcommalist[#1]\processitem
>       \endgroup }
> 
>    \TheBossWantsTheWorkToBeDoneOn[monday,wednesday,thursday]{tidy up}

Great, thanks Taco! It works. It seems easier than I thought, but I
could have spent hours looking for the proper solution alone.

I hope this will land in the t-rsteps module (\OnSteps[1,2,3,6]{...}).

> > Is there also a possibility to define a command like
> >     \IHaveToDoTheTasks[1-4,7,9-11]{until tomorrow}
> 
> There was not, but knowing Hans I trust that soon there will be :-).

:)

> For now, here is my solution.
> 
> [...]
>
> With these, you can do:
> 
>    \def\IHaveToDoTheTask[#1]#2{\message{(#1: #2)}}
> 
>    \def\IHaveToDoTheTasks[#1]#2%
>      {\begingroup
>       \def\processitem##1{\IHaveToDoTheTask[##1]{#2}}%
>       \uncompresslist[#1]% <= Yeah!
>       \processcommacommand[\uncompressedlist]\processitem
>       \endgroup }
> 
> I hope you understand what I've done, but otherwise, feel
> free to ask, of course.

Well, my stomach needs some time to process the latter example. But if I write
    \def\IHaveToDoTheTask[#1]#2{\message{(#1: #2)}The task #1 has to
be done #2.\crlf}
    \IHaveToDoTheTasks[1-3]{until tomorrow}
nothing happens.

Thanks again,
    Mojca

Re: How to "\processcommalist"? (corrected solution)

[Taco Hoekwater]

I have to reply to myself, because Mojca discovered an error
in my example code. This:

Taco Hoekwater wrote:
>   \def\IHaveToDoTheTasks[#1]#2%
>     {\begingroup
>      \def\processitem##1{\IHaveToDoTheTask[##1]{#2}}%
>      \uncompresslist[#1]% <= Yeah!
>      \processcommacommand[\uncompressedlist]\processitem
>      \endgroup }

should have been:

    \def\IHaveToDoTheTasks[#1]#2%
      {\begingroup
       \uncompresslist[#1]% <= Yeah! (do this first!)
       \def\processitem##1{\IHaveToDoTheTask[##1]{#2}}%
       \processcommacommand[\uncompressedlist]\processitem
       \endgroup }


Greetings again, Taco

Re: How to "\processcommalist"?

[Hans Hagen]

Mojca Miklavec wrote:
> Taco Hoekwater wrote:
> 
>>Mojca Miklavec wrote:
>>
>>>I would like to define a command, which would be called in the following way:
>>>    \TheBossWantsTheWorkToBeDoneOn[monday,wednesday,thursday]{tidy up}
>>>
>>>so that it would be equivalent to:
>>>    \WeHaveToDo[monday]{tidy up}
>>>    \WeHaveToDo[wednesday]{tidy up}
>>>    \WeHaveToDo[thursday]{tidy up}
>>>
>>>I played a bit with different variants of \processcommalist, but I
>>>can't figure out how to use it in this particular case.
>>
>>The trick is to store the tidy up inside the processing command,
>>like so:
>>
>>   \def\WeHaveToDo[#1]#2{\message{(#1: #2)}}
>>
>>   \def\TheBossWantsTheWorkToBeDoneOn[#1]#2%
>>     {\begingroup
>>      \def\processitem##1{\WeHaveToDo[##1]{#2}}%
>>      \processcommalist[#1]\processitem
>>      \endgroup }
>>
>>   \TheBossWantsTheWorkToBeDoneOn[monday,wednesday,thursday]{tidy up}
> 
> 
> Great, thanks Taco! It works. It seems easier than I thought, but I
> could have spent hours looking for the proper solution alone.

Actually, there is an easier way to do this; just swap the arguments to WeHaveToDo:

\def\TheBossWantsTheWorkToBeDoneOn[#1]#2%
   {\processcommalist[#1]{\WeHaveToDo{#2}}}

\def\WeHaveToDo#1#2{(#2: #1)}

\starttext

\TheBossWantsTheWorkToBeDoneOn[monday,wednesday,thursday]{tidy up}

\stoptext

btw, nice thread for a wiki entry

> I hope this will land in the t-rsteps module (\OnSteps[1,2,3,6]{...}).
> 
> 
>>>Is there also a possibility to define a command like
>>>    \IHaveToDoTheTasks[1-4,7,9-11]{until tomorrow}
>>
>>There was not, but knowing Hans I trust that soon there will be :-).

hm, well, it does rain outside, but ...

Hans

-----------------------------------------------------------------
                                           Hans Hagen | PRAGMA ADE
               Ridderstraat 27 | 8061 GH Hasselt | The Netherlands
      tel: 038 477 53 69 | fax: 038 477 53 74 | www.pragma-ade.com
                                              | www.pragma-pod.nl
-----------------------------------------------------------------

Re: How to "\processcommalist"?

[Mojca Miklavec]

Hans Hagen wrote:
> Mojca Miklavec wrote:
> > Taco Hoekwater wrote:
> >>Mojca Miklavec wrote:
> >>
> >>>I would like to define a command, which would be called in the following way:
> >>>    \TheBossWantsTheWorkToBeDoneOn[monday,wednesday,thursday]{tidy up}
> >>>
> >>>so that it would be equivalent to:
> >>>    \WeHaveToDo[monday]{tidy up}
> >>>    \WeHaveToDo[wednesday]{tidy up}
> >>>    \WeHaveToDo[thursday]{tidy up}
>
> Actually, there is an easier way to do this; just swap the arguments to WeHaveToDo:
> 
> \def\TheBossWantsTheWorkToBeDoneOn[#1]#2%
>    {\processcommalist[#1]{\WeHaveToDo{#2}}}
> 
> \def\WeHaveToDo#1#2{(#2: #1)}

Thanks for the proposal. I included it into Wiki, but in my case the
"\WeHaveToDo" was already defined and I needed it exactly in the form
that Taco suggested (to call \OnlyStep[#1]{#2} with
\OnSteps[1-3,5]{content} in t-rsteps module).

> btw, nice thread for a wiki entry

I added it to http://contextgarden.net/Inside_ConTeXt#Processing_lists_of_values.

> >>>Is there also a possibility to define a command like
> >>>    \IHaveToDoTheTasks[1-4,7,9-11]{until tomorrow}
> >>
> >>There was not, but knowing Hans I trust that soon there will be :-).
> 
> hm, well, it does rain outside, but ...

Taco's solution already solved my problem, but I believe it would be
nice to add some \processenumeratedlist (well, some better name should
be given!) command to ConTeXt one day. That way it would be possible
to process some commands like
    \filterpages[file.pdf][1,3,5]
also with
    \filterpages[file.pdf][1-3,5,7-11]

Mojca

Re: How to "\processcommalist"?

[Hans Hagen]

Mojca Miklavec wrote:

> Taco's solution already solved my problem, but I believe it would be
> nice to add some \processenumeratedlist (well, some better name should
> be given!) command to ConTeXt one day. That way it would be possible
> to process some commands like
>     \filterpages[file.pdf][1,3,5]
> also with
>     \filterpages[file.pdf][1-3,5,7-11]

ah, you stopped rading page-imp.tex too early, there's also:

\def\dowithrange#1#2% #2 takes number
   {\beforesplitstring#1\at:\to\fromrange
    \aftersplitstring #1\at:\to\torange
    \ifx\torange\empty\let\torange\fromrange\fi
    \dostepwiserecurse\fromrange\torange1{#2{\recurselevel}}}

but we can indeed make a nicer looking one

Hans

-----------------------------------------------------------------
                                           Hans Hagen | PRAGMA ADE
               Ridderstraat 27 | 8061 GH Hasselt | The Netherlands
      tel: 038 477 53 69 | fax: 038 477 53 74 | www.pragma-ade.com
                                              | www.pragma-pod.nl
-----------------------------------------------------------------