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%++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++%
% This is file 'newenviron.sty', version 1.0, Match 2013. %
% %
% This package and accompanying files may be distributed and/or %
% modified under the conditions of the LaTeX Project Public License, %
% either version 1.3 of this license or any later version. The latest %
% version of this license is 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. %
% %
% The LPPL maintenance status of this software is 'author-maintained'. %
% %
% This software is provided 'as it is', without warranty of any kind, %
% either expressed or implied, including, but not limited to, the %
% implied warranties of merchantability and fitness for a particular %
% purpose. %
% %
% Copyright (c) 2013 Ahmed Musa (amusa22@gmail.com). %
%++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++%
\@ifpackageloaded{catoptions}{}{\RequirePackage{catoptions}[2011/12/12]}
\UseNormalCatcodes
\StyleFilePurpose{Collect and execute environment body (AM)}
\StyleFileRCSInfo
$Id: newenviron.sty,v 1.0 2013/03/08 09:00:00 Ahmed Musa Exp $
\ProvidesPackage{newenviron}[\StyleFileInfo]
\NeedsTeXFormat{LaTeX2e}[2011/06/27]
% Collect environment body in macro \envbody and \<env name>body.
%
\cptnewvariables{toks}[nenv@]{temptoks}
\new@def\nenv@gobbletomarker#1\nenv@endmarker{}
\new@def*\nevn@quark{}
\new@def*\AlwaysTrimEnvEntries{\global\nenv@alwaystrimtrue}
\new@def*\nenv@trimspace{%
\ifdefboolTF{nenv@alwaystrim}\cpttrimspace\unexpanded
}
\new@def*\nenv@everybegin@hook{}
\robust@def*\EveryBeginOfEnvironment#1{%
\xifinsetTF
{\detokenize{\nevn@quark#1\nevn@quark}}
{\cptoxdetok\nenv@everybegin@hook}{}{%
\edef\nenv@everybegin@hook{%
\expandcsonce\nenv@everybegin@hook
\noexpand\nevn@quark\unexpanded{#1}\noexpand\nevn@quark
}%
}%
}
\new@def*\nenv@everyend@hook{}
\robust@def*\EveryEndOfEnvironment#1{%
\xifinsetTF
{\detokenize{\nevn@quark#1\nevn@quark}}
{\cptoxdetok\nenv@everyend@hook}{}{%
\edef\nenv@everyend@hook{%
\expandcsonce\nenv@everyend@hook
\noexpand\nevn@quark\unexpanded{#1}\noexpand\nevn@quark
}%
}%
}
\EveryEndOfEnvironment{\@ignoretrue}
\robust@def*\nenv@appto#1#2{%
\ifdefTF#1{%
\edef#1{\expandcsonce#1\unexpanded{#2}}%
}{%
\edef#1{\unexpanded{#2}}%
}%
}
%
% \newenviron<optional *>
% {<name>}[<narg>][<default of 1st argument>]{<start-code>}{<end-code>}
%
% \renewenviron<optional *>
% {<name>}[<narg>][<default of 1st argument>]{<start-code>}{<end-code>}
%
\robust@def*\newenviron{\cpt@starorlong\nenv@newenviron}
\robust@def*\nenv@newenviron#1{%
\edef\cpt@tempa{\cpttrimspace{#1}}%
\cptexpandarg\cpt@testopt
{\nenv@newenviron@a{\expandcsonce\cpt@tempa}}{0}%
}
\robust@def*\nenv@newenviron@a#1[#2]{%
\cpt@ifbrack{\nenv@newenviron@b#1[#2]}{\nenv@newenviron@c{#1}{[#2]}}%
}
\robust@def*\nenv@newenviron@b#1[#2][#3]{\nenv@newenviron@c{#1}{[#2][{#3}]}}
\robust@def\nenv@newenviron@c#1#2#3#4{%
\ifcsndefTF{#1}{}{\letcsntocsn{#1}{end#1}}%
\aftercsname\new@command{#1}#2{%
\edef\nenv@beforebody{\nenv@trimspace{#3}}%
\nenv@everybegin@hook
\nenv@collectbody
}%
\l@ngrel@x\csn@edef{end#1}{%
% We want any parameter characters in #4 to be doubled by
% the user at environment definition time. The aim is that in both
% <start code> and <end code>, the parameter characters should be
% doubled for any new macro definition. For example,
%
% \newenviron{assertion}
% {\def\acmd##1{##1}}
% {\def\bcmd##1{##1}\assertionbody}
%
% Any #1, #2, etc. in <start code> refer to the parameters of
% \assertion.
%
\def\noexpand\cpt@prova{\nenv@trimspace{#4}}\noexpand\cpt@prova
\noexpand\nenv@everyend@hook
}%
}
\robust@def*\nenv@collectbody{%
\begingroup
\toks@{}%
\everyeof{\end{EOF}\relax}%
\nenv@collectbody@a
}
\robust@def\nenv@collectbody@a#1\end#2{%
\nenv@temptoks{%
\cptexpanded{%
\toks@{%
\the\toks@\nenv@trimspace{#1}%
\noexpand\end{\expandcsonce\cpt@argofend}%
}%
}%
\nenv@collectbody@a
}%
\edef\cpt@argofend{\cpttrimspace{#2}}%
\ifcseqTF\cpt@argofend\@currenvir{%
\def\cpt@tempa{}%
\nenv@pushbegin#1\begin\end\nenv@endmarker
\ifcsemptyTF\cpt@tempa{%
% Last end of \newenviron grabbed:
\cptexpanded{\endgroup
\csn@edef{\@currenvir body}{%
\noexpand\unexpanded{\the\toks@\nenv@trimspace{#1}}%
}%
\letcstocsn\noexpand\envbody{\@currenvir body}%
\unexpanded{%
\nenv@beforebody\relax
\ifdefboolTF{nenv@alwaystrim}\@ignoretrue\relax
}%
\noexpand\end{\cpt@argofend}%
}%
}{%
% Nested \newenviron: add current #1 and continue:
\the\nenv@temptoks
}%
}{%
\oifstrcmpTF{\cpt@argofend}{document}{%
\expandafter\endgroup\expandafter
\@checkend\expandafter{\cpt@argofend}%
}{%
\oifstrcmpTF{\cpt@argofend}{EOF}{%
\expandafter\endgroup\expandafter
\@checkend\expandafter{\cpt@argofend}%
}{%
\the\nenv@temptoks
}%
}%
}%
}
\new@def\nenv@pushbegin#1\begin#2{%
\expandafter\ifx\cpt@car#2x\car@nil\end
\expandafter\@gobble
\else
\edef\cpt@prova{\cpttrimspace{#2}}%
\ifx\cpt@prova\cpt@argofend
\def\cpt@tempa{x}%
\expandafter\expandafter\expandafter\nenv@gobbletomarker
\else
\expandafter\expandafter\expandafter\nenv@pushbegin
\fi
\fi
}
\robust@def*\renewenviron{\cpt@starorlong\nenv@renewenviron}
\robust@def*\nenv@renewenviron#1{%
\edef\cpt@tempa{\cpttrimspace{#1}}%
\ifcsndefTF\cpt@tempa
{}
{\@latex@error{Environment #1 is undefined}\@ehd}%
\letcsntocs\cpt@tempa\relax
\letcsntocs{end\cpt@tempa}\relax
\expandafter\nenv@newenviron\expandafter{\cpt@tempa}%
}
\XDeclareBooleanOption{alwaystrim}[true](nenv@){}{}
\XDeclareOption*{\@@warning{Unknown option '\CurrentOption' ignored}}
\XExecuteOptions{alwaystrim}
\XProcessOptions*\relax
\endinput
|
