I need a pretty simple thing - when I get a macro parameter which is a string delimited with commas, can I split it and assign resulting strings into an array?
In short, I'd like to write something like this:
\newcommand{\test}[1]{
\def\array = \parse{#1}{,}
}
So I could later use it like this:
\someOtherMacro{\array[1]}
I was looking at the other answers, but I'm not able to find something really simple for this task (just parsing string and assigning results).
You can consider using arrayjobx:
\documentclass{article}
\usepackage{arrayjobx}
\makeatletter
\renewcommand{\readarray}[3][&]{\read@array[#1]{#2}{#3}}%
\makeatother
\newcommand{\someOtherMacro}{\textbf}
\begin{document}
\newarray\mynames
\readarray{mynames}{Moe&Larry&Curly}
1: \mynames(1) and \someOtherMacro{\mynames(2)} and \mynames(3)
\readarray[,]{mynames}{Moe,Larry,Curly}
2: \mynames(1) and \mynames(2) and \someOtherMacro{\mynames(3)}
\end{document}
The listofitems package is very powerful in this regard. The first example parses based on a , separator.
The 2nd example is a two-tiered parsing, first by way of \\, and then again, using a space separator.
Parsing to n-tiers poses no problem for the package. It also has options to discard blank array elements, if desired.
In both cases, leading/trailing spaces have been excised, by using the star form of the \readlist invocation.
\documentclass{article}
\usepackage{listofitems}
\begin{document}
\setsepchar{,}
\readlist*\parsed{This, is, my , list, of words}
There are \parsedlen{} items in list
Here are the items:
\showitems\parsed
item 4 is ``\parsed[4]''.
\setsepchar{\\/ }
\readlist*\multiparsed{%
This is a test\\
of the\\
emergency broadcast system.%
}
Here is the other list:
\showitems\multiparsed
Row 2 is ``\multiparsed[2].''
2nd word of row 3 is ``\multiparsed[3,2]''.
\end{document}
listofitems. Do you have any other solution?
It's very easy with expl3.
\documentclass{article}
\usepackage{xparse}
\ExplSyntaxOn
\NewDocumentCommand{\definearray}{mm}
{
\seq_new:c { g_eenoku_array_#1_seq }
\seq_gset_split:cnn { g_eenoku_array_#1_seq } { , } { #2 }
}
\cs_generate_variant:Nn \seq_gset_split:Nnn { c }
\NewDocumentCommand{\usearray}{mm}
{
\seq_item:cn { g_eenoku_array_#1_seq } { #2 }
}
\ExplSyntaxOff
\definearray{names}{Moe,Larry,Curly}
\begin{document}
\usearray{names}{1}
\usearray{names}{2}
\usearray{names}{3}
\end{document}
\def\com#1,#2{\def\array{#1}}. i.e.\com{Hallo,Tübb}will result in\array -> Hallo.