% \iffalse meta-comment
%
% Copyright (C) 2015 by Ruben Giannotti 
% <ruben dot giannotti at gmx dot net>
% -------------------------------------------------------
% 
% This work may be distributed and/or modified under the
% conditions of the LaTeX Project Public License, either
% version 1.3c of this license or (at your option) 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.
%
% This work has the LPPL maintenance status `maintained'.
% 
% The Current Maintainer of this work is Ruben Giannotti.
%
% This work consists of the files
%   fetchcls.dtx 
%   fetchcls.ins
% and the derived file fetchcls.sty.
%
% \fi
%
% \iffalse
%<*driver>
\ProvidesFile{fetchcls.dtx}
%</driver>
%<package>\NeedsTeXFormat{LaTeX2e}[2008/04/05]
%<package>\ProvidesPackage{fetchcls}
%<*package>
    [2015/08/11 v1.0 Fetch the class name (RG)]
%</package>
%
%<*driver>
\documentclass{ltxdoc}
\usepackage{parskip}
\setlength\parindent{0pt}
\providecommand*\pkg{}
\providecommand*\url{}
\providecommand*\email{}
\renewcommand\pkg{\textsf}
\renewcommand\url{\texttt}
\renewcommand\email{\texttt}
\begin{document}
  \DocInput{fetchcls.dtx}
\end{document}
%</driver>
% \fi
%
% \CheckSum{13}
%
% \CharacterTable
%  {Upper-case    \A\B\C\D\E\F\G\H\I\J\K\L\M\N\O\P\Q\R\S\T\U\V\W\X\Y\Z
%   Lower-case    \a\b\c\d\e\f\g\h\i\j\k\l\m\n\o\p\q\r\s\t\u\v\w\x\y\z
%   Digits        \0\1\2\3\4\5\6\7\8\9
%   Exclamation   \!     Double quote  \"     Hash (number) \#
%   Dollar        \$     Percent       \%     Ampersand     \&
%   Acute accent  \'     Left paren    \(     Right paren   \)
%   Asterisk      \*     Plus          \+     Comma         \,
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%   Right bracket \]     Circumflex    \^     Underscore    \_
%   Grave accent  \`     Left brace    \{     Vertical bar  \|
%   Right brace   \}     Tilde         \~}
%
%
% \changes{v1.0}{2015/08/11}{Initial version}
%
% \GetFileInfo{fetchcls.dtx}
%
% \DoNotIndex{\newcommand,\newenvironment,\!,\@empty,\@gobble,\@gobbletwo}
% \DoNotIndex{\@ifpackageloaded,\@ifpackagewith,\@ifundefined,\@namedef}
% \DoNotIndex{\@nil,\@onlypreamble,\@tempa,\@tempb,\@tempswafalse,\def}
% \DoNotIndex{\@tempswatrue,\^,\-,\active,\begingroup,\catcode,\@car,\@cdr}
% \DoNotIndex{\edef,\else,\endgroup,\endinput,\expandafter,\fi,\if}
% \DoNotIndex{\if@tempswa,\ifcase,\ifnum,\ifx,\lccode,\let,\lowercase}
% \DoNotIndex{\MessageBreak,\next,\number,\numexpr,\or,\PackageError}
% \DoNotIndex{\PackageWarning,\PackageWarningNoLine,\strip@prefix,\@@end}
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% \DoNotIndex{\meaning,\ifdefined,\csname,\chardef,\endcsname,\protect}
% \DoNotIndex{\input,\RequirePackage,\global,\ifcsname,\makeatother}
% \DoNotIndex{\@makeother,\the,\toks@}
%
% \title{The \pkg{fetchcls} package\thanks{This document
%   corresponds to \pkg{fetchcls}~\fileversion, dated \filedate.}}
% \author{Ruben Giannotti\thanks{\email{ruben dot giannotti at gmx dot net}}}
% \date{August, 11 2015}
%
% \maketitle
%
% With standard \LaTeX\ you are able to check for the class in use
% invoking the kernel command \cs{@ifclassloaded}.
% However, doing so you can't get the explicit class name
% (unless you want to loop over every possible class name
% until \cs{@ifclassloaded} returns true -- don't do that!)
% With the present package you can get the name with significantly less effort.
% Just load the package as usual:
% \begin{flushleft}
%   \cs{usepackage}\{fetchcls\}
% \end{flushleft}
% Then, the control sequence \cs{classname} will hold the name of the current class.
%
% \StopEventually{}
%
% Let's have a brief look on how the two code lines of this package tackle this task.
%
% We will use the \cs{@filelist} to retrive the class name 
% as it contains the class name as its first entry.
% Since the class is captured with its extension we define a macro
% with the explicit class extension of \LaTeX\ as delimiter.
% Then the rest will be read until the end and thrown away.
% Everything in front of the delimiter will be written into \cs{classname}.
%    \begin{macrocode}
\def\f@tchcls#1.cls#2 {\def\classname{#1}}
%    \end{macrocode}
% The next and alredy last step consists in
% apllying \cs{f@tchcls} to the \cs{@filelist}
% while ensuring that it gets expanded before \cs{f@tchcls} reads it.
%    \begin{macrocode}
\begingroup\edef\x{\endgroup\noexpand\f@tchcls\@filelist\space}\x
%    \end{macrocode}
%
% \Finale
\endinput