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%%
%% This is file `macrolist.sty',
%% generated with the docstrip utility.
%%
%% The original source files were:
%%
%% macrolist.dtx (with options: `package')
%% This work may be distributed and/or modified under
%% the conditions the LaTeX Project Public License (LPPL),
%% either version 1.3 of this license or (at your option)
%% any later version. The latest version of this license
%% can be found in
%% http://www.latex-project.org/lppl.txt
%% and version 1.3 or later is part of all distributions of LaTeX
%% version 2005/12/01 or later.
\NeedsTeXFormat{LaTeX2e}
\ProvidesPackage{macrolist}[2021/07/23 v1.1.1 Create lists of macros and perform operations on them]
\RequirePackage{pgffor}
\newcommand{\newlist}[1]{
\ifcsname c@macrolist@list@#1\endcsname
\PackageError{macrolist}{The list '#1' is already defined}{}
\else
\newcounter{macrolist@list@#1}
\setcounter{macrolist@list@#1}{0}
\fi
}
\newcommand{\listexists}[3]{\ifcsname c@macrolist@list@#1\endcsname#2\else#3\fi}
\newcommand{\listelement}[2]{%
\macrolist@inbounds{#1}{#2}%
\csname macrolist@list@#1\the\numexpr #2\relax\endcsname%
}
\newcommand{\listadd}[1]{
\macrolist@exists{#1}
\def\macrolist@currlist{#1}
\macrolist@listadd
}
%% We write \listadd this way such that the optional argument will be positioned correctly
\newcommand{\macrolist@listadd}[2][]{
\stepcounter{macrolist@list@\macrolist@currlist}
\if\relax\detokenize{#1}\relax
\expandafter\gdef\csname macrolist@list@\macrolist@currlist\listsize{\macrolist@currlist}\endcsname{#2}
\else
\expandafter\ifnum\csname themacrolist@list@\macrolist@currlist\endcsname=#1
\expandafter\gdef\csname macrolist@list@\macrolist@currlist\listsize{\macrolist@currlist}\endcsname{#2}
\else
\macrolist@inbounds{\macrolist@currlist}{#1}
\foreach \macrolist@index in {\listsize{\macrolist@currlist}, ...,\the\numexpr #1+1\relax} {
\global\expandafter\let\csname macrolist@list@\macrolist@currlist\macrolist@index\expandafter\endcsname\csname macrolist@list@\macrolist@currlist\the\numexpr\macrolist@index-1\relax\endcsname
}
\expandafter\gdef\csname macrolist@list@\macrolist@currlist#1\endcsname{#2}
\fi
\fi
}
\newcommand{\listremove}[2]{
\macrolist@inbounds{#1}{#2}
\ifnum\numexpr#2\relax=\listsize{#1}
\else
\foreach \macrolist@index in {#2, ..., \the\numexpr\listsize{#1}-1\relax} {
\global\expandafter\let\csname macrolist@list@#1\macrolist@index\expandafter\endcsname\csname macrolist@list@#1\the\numexpr\macrolist@index+1\endcsname
}
\fi
\global\expandafter\let\csname macrolist@list@#1\listsize{#1}\endcsname\relax
\addtocounter{macrolist@list@#1}{-1}
}
\newcommand{\listremovelast}[1]{
\macrolist@exists{#1}
\global\expandafter\let\csname macrolist@list@#1\listsize{#1}\endcsname\relax
\addtocounter{macrolist@list@#1}{-1}
}
\newcommand{\listclear}[2]{
\macrolist@inbounds{#1}{#2}
\foreach \macrolist@index in {1, ..., \listsize{#1}} {
\global\expandafter\let\csname \macrolist@list@#1\macrolist@index\endcsname\relax
}
\setcounter{macrolist@list@#1}{0}
}
\newcommand*{\listsize}[1]{%
\macrolist@exists{#1}%
\csname themacrolist@list@#1\endcsname
}
\newcommand{\listforeach}[2]
{%
\def\macrolist@foreachstart{0}% Reset
% This is used to make optional arguments line up correctly
\def\macrolist@start{1}%
\def\macrolist@end{\listsize{#1}}%
\def\macrolist@listname{#1}%
\def\macrolist@element{#2}%
\macrolist@listforeachi
}
\newcommand{\macrolist@listforeachi}[1][]{%
\if\relax\detokenize{#1}\relax
\else
\def\macrolist@start{#1}%
\def\macrolist@foreachstart{1}%
\fi
\macrolist@listforeachii
}
\newcommand{\macrolist@listforeachii}[1][]{%
\if\relax\detokenize{#1}\relax
\ifnum\macrolist@foreachstart=1
\PackageError{macrolist}{You must either pass in both a starting and ending position or neither}{}
\fi
\else
\def\macrolist@end{#1}%
\fi
\macrolist@listforeachaction
}
\newcommand{\macrolist@listforeachaction}[1]{%
\macrolist@exists{\macrolist@listname}%
\ifnum\numexpr\macrolist@start\relax>\listsize{\macrolist@listname}%
\PackageError{macrolist}{The starting index of the loop is out of the bounds of list '\macrolist@listname'}{}
\fi
\ifnum\numexpr\macrolist@end\relax>\listsize{\macrolist@listname}
\PackageError{macrolist}{The ending index of the loop is out of the bounds of list '\macrolist@listname'}{}
\fi
\foreach \macrolist@index in {\the\numexpr\macrolist@start\relax, ..., \the\numexpr\macrolist@end\relax} {%
\expandafter\expandafter\expandafter\let\expandafter\expandafter\macrolist@element\csname macrolist@list@\macrolist@listname\macrolist@index\endcsname
#1%
}%
}
\newcommand{\listjoin}[2]{%
\ifnum\listsize{#1}>1
\listforeach{#1}{\macrolist@joinelement}[1][\listsize{#1}-1]{\macrolist@joinelement#2}%
\fi
\ifnum\listsize{#1}>0
\listelement{#1}{\listsize{#1}}%
\fi
}
%% List: Some text
%% List: Some text, \macro
%% Prints out "Some text"
%% List: Element inserted into beginning, Some text, \macro
%% List: Some text, \macro
%% We're printing out \textbf{Some text}. We're printing out \textbf{\macro}.
%% Some text, \macro
\newcommand*{\macrolist@exists}[1]{%
\ifcsname c@macrolist@list@#1\endcsname
\else
\PackageError{macrolist}
{The first argument is not a defined list}
{Make sure you have defined the list before trying to operate on it.}
\fi
}
\newcommand*{\macrolist@inbounds}[2]{%
\macrolist@exists{#1}%
%
\if\relax\detokenize{#2}
\PackageError{macrolist}
{No number has been passed into the second argument of your command
}{Pass in a number to the second argument of your command.}
\fi
%
\ifnum\numexpr#2 \relax>\listsize{#1}
\PackageError{macrolist}
{Index out of bounds}
{The number you have passed in to the second argument of your command\MessageBreak
is out of the bounds of list '#1'.}
\fi
}
\endinput
%%
%% End of file `macrolist.sty'.
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