% \iffalse meta-comment
%
% Copyright (C) 2005, 2006 by Heiko Oberdiek <oberdiek@uni-freiburg.de>
%
% This work may be distributed and/or modified under the
% conditions of the LaTeX Project Public License, either
% version 1.3 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".
%
% This Current Maintainer of this work is Heiko Oberdiek.
%
% This work consists of the main source file classlist.dtx
% and the derived files
%    classlist.sty, classlist.pdf, classlist.ins, classlist.drv.
%
% Distribution:
%    CTAN:macros/latex/contrib/oberdiek/classlist.dtx
%    CTAN:macros/latex/contrib/oberdiek/classlist.pdf
%
% Unpacking:
%    (a) If classlist.ins is present:
%           tex classlist.ins
%    (b) Without classlist.ins:
%           tex classlist.dtx
%    (c) If you insist on using LaTeX
%           latex \let\install=y\input{classlist.dtx}
%        (quote the arguments according to the demands of your shell)
%
% Documentation:
%    (a) If classlist.drv is present:
%           latex classlist.drv
%    (b) Without classlist.drv:
%           latex classlist.dtx; ...
%    The class ltxdoc loads the configuration file ltxdoc.cfg
%    if available. Here you can specify further options, e.g.
%    use A4 as paper format:
%       \PassOptionsToClass{a4paper}{article}
%
%    Programm calls to get the documentation (example):
%       pdflatex classlist.dtx
%       makeindex -s gind.ist classlist.idx
%       pdflatex classlist.dtx
%       makeindex -s gind.ist classlist.idx
%       pdflatex classlist.dtx
%
% Installation:
%    TDS:tex/latex/oberdiek/classlist.sty
%    TDS:doc/latex/oberdiek/classlist.pdf
%    TDS:source/latex/oberdiek/classlist.dtx
%
%<*ignore>
\begingroup
  \def\x{LaTeX2e}
\expandafter\endgroup
\ifcase 0\ifx\install y1\fi\expandafter
         \ifx\csname processbatchFile\endcsname\relax\else1\fi
         \ifx\fmtname\x\else 1\fi\relax
\else\csname fi\endcsname
%</ignore>
%<*install>
\input docstrip.tex
\Msg{************************************************************************}
\Msg{* Installation}
\Msg{* Package: classlist 2006/02/20 v1.2 Record loaded classes (HO)}
\Msg{************************************************************************}

\keepsilent
\askforoverwritefalse

\preamble

This is a generated file.

Copyright (C) 2005, 2006 by Heiko Oberdiek <oberdiek@uni-freiburg.de>

This work may be distributed and/or modified under the
conditions of the LaTeX Project Public License, either
version 1.3 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".

This Current Maintainer of this work is Heiko Oberdiek.

This work consists of the main source file classlist.dtx
and the derived files
   classlist.sty, classlist.pdf, classlist.ins, classlist.drv.

\endpreamble

\generate{%
  \file{classlist.ins}{\from{classlist.dtx}{install}}%
  \file{classlist.drv}{\from{classlist.dtx}{driver}}%
  \usedir{tex/latex/oberdiek}%
  \file{classlist.sty}{\from{classlist.dtx}{package}}%
}

\obeyspaces
\Msg{************************************************************************}
\Msg{*}
\Msg{* To finish the installation you have to move the following}
\Msg{* file into a directory searched by TeX:}
\Msg{*}
\Msg{*     classlist.sty}
\Msg{*}
\Msg{* To produce the documentation run the file `classlist.drv'}
\Msg{* through LaTeX.}
\Msg{*}
\Msg{* Happy TeXing!}
\Msg{*}
\Msg{************************************************************************}

\endbatchfile
%</install>
%<*ignore>
\fi
%</ignore>
%<*driver>
\NeedsTeXFormat{LaTeX2e}
\ProvidesFile{classlist.drv}%
  [2006/02/20 v1.2 Record loaded classes (HO)]
\documentclass{ltxdoc}
\usepackage{holtxdoc}
\begin{document}
  \DocInput{classlist.dtx}
\end{document}
%</driver>
% \fi
%
% \CheckSum{162}
%
% \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         \,
%   Minus         \-     Point         \.     Solidus       \/
%   Colon         \:     Semicolon     \;     Less than     \<
%   Equals        \=     Greater than  \>     Question mark \?
%   Commercial at \@     Left bracket  \[     Backslash     \\
%   Right bracket \]     Circumflex    \^     Underscore    \_
%   Grave accent  \`     Left brace    \{     Vertical bar  \|
%   Right brace   \}     Tilde         \~}
%
% \GetFileInfo{classlist.drv}
%
% \title{The \xpackage{classlist} package}
% \date{2006/02/20 v1.2}
% \author{Heiko Oberdiek\\\xemail{oberdiek@uni-freiburg.de}}
%
% \maketitle
%
% \begin{abstract}
% This package records the loaded classes and stores
% them in a list.
% \end{abstract}
%
% \tableofcontents
%
% \section{Documentation}
%
% \subsection{Background}
%
% This packages is an answer of a newsgroup question:
% \begin{quote}
% \begin{tabular}{@{}ll@{}}
%   Newsgroup: & comp.text.tex\\
%   Subject: & Finding the Document Class\\
%   From: & Herber Schulz\\
%   Date: & 18 Jun 2005 13:16:49 -0500\\
%   Message-ID: &
%    \textless
%    \texttt{herbs-D55DB9.13170418062005@news.isp.giganews.com}^^A
%    \textgreater
% \end{tabular}
% \end{quote}
%
% \subsection{Usage}
%
% Load this package before \cs{documentclass}:
% \begin{quote}
%   |\RequirePackage{classlist}|\\
%   |\documentclass[some,options]{whatever}|
% \end{quote}
% It then records the classes with options.
%
% If used after \cs{documentclass}, \cs{@filelist} is
% parsed for classes. The additional data
% specified options and requested version is no
% longer available here.
%
% \begin{description}
% \item[\cs{MainClass}] contains the first loaded class.
% \item[\cs{ClassList}] stores the class entries, eg.
%   \begin{quote}
%   \begin{tabular}{@{}l@{ }l@{}}
%     \cs{ClassList} $\rightarrow$&
%     |\ClassListEntry{myarticle}{a4paper}{}|\\
%     &|\ClassListEntry{article}{}{}|
%   \end{tabular}
%   \end{quote}
% \item[\cs{ClassListEntry}] has three arguments:
%   \begin{quote}
%   \begin{tabular}{@{}ll@{}}
%     |#1|: & class name\\
%     |#2|: & options given in \cs{documentclass}/\cs{LoadClass}\\
%     |#3|: & requested version, not the version of class
%   \end{tabular}
%   \end{quote}
% \item[\cs{PrintClassList}] prints the list on screen it can be
%    configured by
% \item[\cs{PrintClassListTitle}] for the title and
% \item[\cs{PrintClassListEntry}] for formatting the entries.
%    See the implemenation how to use these.
% \end{description}
%
% \StopEventually{
% }
%
% \section{Implementation}
%
%    \begin{macrocode}
%<*package>
%    \end{macrocode}
%    Package identification.
%    \begin{macrocode}
\NeedsTeXFormat{LaTeX2e}
\ProvidesPackage{classlist}%
  [2006/02/20 v1.2 Record loaded classes (HO)]
%    \end{macrocode}
%
%    \begin{macrocode}
\let\ClassList\@empty
\let\MainClassName\relax
%    \end{macrocode}
%
%    Test, whether we are called before \cs{documentclass}.
%    \begin{macrocode}
\ifx\@classoptionslist\relax
  \let\CL@org@fileswith@pti@ns\@fileswith@pti@ns
  \def\@fileswith@pti@ns#1[#2]#3[#4]{%
%    \end{macrocode}
%    \begin{tabular}{@{}ll@{}}
%      |#1|: & \cs{@clsextension}\\
%      |#2|: & options of \cs{documentclass}/\cs{LoadClass}\\
%      |#3|: & class name\\
%      |#4|: & requested version
%    \end{tabular}
%    \begin{macrocode}
    \ifx#1\@clsextension
      \@ifl@aded#1{#3}{%
        \PackageInfo{classlist}{%
          Skipping class `#3', because\MessageBreak
          this class is already loaded%
        }%
      }{%
        \@ifundefined{MainClassName}{%
          \def\MainClassName{#3}%
        }{}%
        \@temptokena\expandafter{%
          \ClassList
          \ClassListEntry{#3}{#2}{#4}%
        }%
        \edef\ClassList{\the\@temptokena}%
      }%
    \fi
    \CL@org@fileswith@pti@ns{#1}[{#2}]{#3}[{#4}]%
  }
  \let\@@fileswith@pti@ns\@fileswith@pti@ns
\else
%    \end{macrocode}
%    Called after \cs{documentclass}.
%    \begin{macrocode}
  \PackageInfo{classlist}{Use \string\@filelist\space method}%

  \let\ClassListEntry\relax
  \expandafter\def\expandafter\CL@test
      \expandafter#\expandafter1\@clsextension#2\@nil{%
    \ifx\\#2\\%
%    \end{macrocode}
%    Name does not contain \cs{@clsextension}
%    \begin{macrocode}
    \else
      \expandafter\CL@test@i\CL@entry\@nil
    \fi
  }%
  \expandafter\def\expandafter\CL@test@i
      \expandafter#\expandafter1\@clsextension#2\@nil{%
    \ifx\\#2\\%
      \@ifundefined{opt@\CL@entry}{%
      }{%
        \@ifundefined{MainClassName}{%
          \let\MainClassName\CL@entry
        }{%
        }%
        \edef\ClassList{%
          \ClassList
          \ClassListEntry{\CL@entry}{}{}%
        }%
      }%
    \else
%    \end{macrocode}
%    Names with more than one \cs{@clsextension} are not supported.
%    \begin{macrocode}
    \fi
  }
  \@for\CL@entry:=\@filelist\do{%
    \expandafter\expandafter\expandafter\CL@test\expandafter
        \CL@entry\@clsextension\@nil
  }%
\fi
%    \end{macrocode}
%
%    \begin{macro}{\PrintClassListEntry}
%    \begin{macrocode}
\providecommand*{\PrintClassListEntry}[3]{%
  \toks@{* #1}%
  \typeout{\the\toks@}%
}
%    \end{macrocode}
%    \end{macro}
%    \begin{macro}{\PrintClassListTitle}
%    \begin{macrocode}
\providecommand*{\PrintClassListTitle}{%
  \typeout{Class list:}%
}
%    \end{macrocode}
%    \end{macro}
%    \begin{macro}{\PrintClassList}
%    \begin{macrocode}
\providecommand*{\PrintClassList}{%
  \begingroup
    \let\ClassListEntry\PrintClassListEntry
    \PrintClassListTitle
    \ClassList
  \endgroup
}
%    \end{macrocode}
%    \end{macro}
%    \begin{macro}{\CL@InfoEntry}
%    \begin{macrocode}
\def\CL@InfoEntry#1#2#3{%
  \advance\count@ by \@ne
  \def\x{#2}%
  \@onelevel@sanitize\x
  \edef\CL@Info{%
    \CL@Info
    \noexpand\MessageBreak
    (\the\count@) %
    #1 [\x]%
    \ifx\\#3\\%
    \else
      \space[#3]%
    \fi
  }%
}
%    \end{macrocode}
%    \end{macro}
%    \begin{macrocode}
\AtBeginDocument{%
  \begingroup
    \count@=\z@
    \def\CL@Info{Class List:}%
    \let\ClassListEntry\CL@InfoEntry
    \ClassList
    \let\on@line\@empty
    \PackageInfo{classlist}{\CL@Info}
  \endgroup
}
%    \end{macrocode}
%
%    \begin{macrocode}
%</package>
%    \end{macrocode}
% \section{Installation}
%
% \paragraph{CTAN.} This package is available on
% CTAN\footnote{\url{ftp://ftp.ctan.org/tex-archive/}}:
% \begin{description}
% \item[\CTAN{macros/latex/contrib/oberdiek/classlist.dtx}] The source file.
% \item[\CTAN{macros/latex/contrib/oberdiek/classlist.pdf}] Documentation.
% \end{description}
%
% \paragraph{Unpacking.} The \xfile{.dtx} file is a self-extracting
% \docstrip\ archive. The files are extracted by running the
% \xfile{.dtx} through \plainTeX:
% \begin{quote}
%   \verb|tex classlist.dtx|
% \end{quote}
%
% \paragraph{TDS.} Now the different files must be moved into
% the different directories in your installation TDS tree
% (also known as \xfile{texmf} tree):
% \begin{quote}
% \sbox0{^^A
% \begin{tabular}{@{}>{\ttfamily}l@{$\quad\rightarrow\quad$}>{\ttfamily}l@{}}
%   classlist.sty & tex/latex/oberdiek/classlist.sty\\
%   classlist.pdf & doc/latex/oberdiek/classlist.pdf\\
%   classlist.dtx & source/latex/oberdiek/classlist.dtx\\
% \end{tabular}^^A
% }%
% \ifdim\wd0>\linewidth
%   \mbox{}\nobreak\hskip0pt minus\leftmargin
%   \usebox0
%   \nobreak\hskip0pt minus\rightmargin
% \else
%   \usebox0
% \fi
% \end{quote}
% If you have a \xfile{docstrip.cfg} that configures and enables \docstrip's
% TDS installing feature, then some files can already be in the right
% place, see the documentation of \docstrip.
%
% \paragraph{Refresh file databases.} If your \TeX~distribution
% (\teTeX, \mikTeX, \dots) rely on file databases, you must refresh
% these. For example, \teTeX\ users run \verb|texhash| or
% \verb|mktexlsr|.
%
% \subsection{Some details for the interested}
%
% \paragraph{Attached source.}
%
% The PDF documentation on CTAN also includes the
% \xfile{.dtx} source file. It can be extracted by
% AcrobatReader 6 or higher. Another option is \textsf{pdftk},
% e.g. unpack the file into the current directory:
% \begin{quote}
%   \verb|pdftk classlist.pdf unpack_files output .|
% \end{quote}
%
% \paragraph{Unpacking with \LaTeX.}
% The \xfile{.dtx} chooses its action depending on the format:
% \begin{description}
% \item[\plainTeX:] Run \docstrip\ and extract the files.
% \item[\LaTeX:] Generate the documentation.
% \end{description}
% If you insist on using \LaTeX\ for \docstrip\ (really,
% \docstrip\ does not need \LaTeX), then inform the autodetect routine
% about your intention:
% \begin{quote}
%   \verb|latex \let\install=y\input{classlist.dtx}|
% \end{quote}
% Do not forget to quote the argument according to the demands
% of your shell.
%
% \paragraph{Generating the documentation.}
% You can use both the \xfile{.dtx} or the \xfile{.drv} to generate
% the documentation. The process can be configured by the
% configuration file \xfile{ltxdoc.cfg}. For instance, put this
% line into this file, if you want to have A4 as paper format:
% \begin{quote}
%   \verb|\PassOptionsToClass{a4paper}{article}|
% \end{quote}
% An example follows how to generate the
% documentation with pdf\LaTeX:
% \begin{quote}
%\begin{verbatim}
%pdflatex classlist.dtx
%makeindex -s gind.ist classlist.idx
%pdflatex classlist.dtx
%makeindex -s gind.ist classlist.idx
%pdflatex classlist.dtx
%\end{verbatim}
% \end{quote}
%
% \begin{History}
%   \begin{Version}{2005/06/19 v1.0}
%   \item
%     First published version
%     (comp.text.tex, CTAN).
%   \end{Version}
%   \begin{Version}{2005/06/19 v1.1}
%   \item
%     After \cs{documentclass} the package looks
%     at \cs{@filelist} instead of aborting with error.
%   \end{Version}
%   \begin{Version}{2006/02/20 v1.2}
%   \item
%     DTX framework.
%   \item
%     Fix for \cs{@@fileswith@pti@ns}.
%   \end{Version}
% \end{History}
%
% \PrintIndex
%
% \Finale
\endinput
