Re: xtable headers and handlecsv loop

[Wolfgang Schuster <wolfgang.schuster.lists@gmail.com>]

Geert Dobbels schrieb am 03.04.2020 um 11:57:
> Hello,
> 
> The sample below has 2 problems I cannot find the solution for:
> 
> I am reading a table from a CSV file and want to typeset it via \xtable.
> 
> The xtable as defined below works, it splits over several pages, but the 
> header does not repeat. I have seen examples in the mailing list where 
> people put the "\startxtable.....\stopxtable" within a \placefigure, but 
> as soon as I try this, I get an error message: "missing } or endgroup", 
> although I doublechecked the "}" and I see no error.
> 
> The other issue I have: Since xtable requires me to read the header line 
> separately in order to put it between \startxtablehead and 
> \stopxtablehead, I access the csv buffer twice: the first time, I only 
> read the first line, and the second time, I read starting from the 
> second line. My problem here is that I do not know beforehand the number 
> of lines in the csv file. So in my second \doloopfromto I give the 
> second argument a number high enough to be sure it reads all the lines. 
> It works fine, but I would like to know if there is a way to read the 
> number of lines in the csv file to use the exact number of lines, 
> instead of guessing.
> 
> \usemodule[handlecsv]
> 
> \opencsvfile{systaprov2.csv}
> 
> \starttext
> 
> 
> \startbuffer[loop]
> \startxrow
> \startxcell[left] \cA \stopxcell
> \startxcell[left] \cB \stopxcell
> \startxcell[left] \cC \stopxcell
> \startxcell[left] \cD \stopxcell
> \startxcell \cE \stopxcell
> \startxcell[left] \cF \stopxcell
> \startxcell \cG \stopxcell
> \startxcell \cH \stopxcell
> \doifdefined{cI}{\startxcell \cI \stopxcell}
> \doifdefined{cJ}{\startxcell \cJ \stopxcell}
> \doifdefined{cK}{\startxcell [left] \cK \stopxcell}
> \stopxrow
> \stopbuffer
> 
> \setupxtable[offset=0cm,
> frame=off,
> bottomframe=on,
> framecolor=gray,
> option=stretch,
> align=middle]
> 
> \setupxtable[head][background=color,
> backgroundcolor=gray,
> topframe=on,
> bottomframe=on,
> framecolor=black,
> foregroundcolor=blue]
> 
> \setupxtable[left][align=right]
> 
> \startxtable[header=repeat]

Add "split=repeat" to \startxtable.

> \startxtablehead[head]
> \doloopfromto{1}{1}{\getbuffer[loop]}
> \stopxtablehead
> \startxtablebody
> \doloopfromto{2}{500}{\getbuffer[loop]}
> \stopxtablebody
> 
> \stopxtable
> 
> \stoptext

Wolfgang
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