% \iffalse meta-comment
%
% File: cd.dtx Copyright (C) 1998-2007 Sebastiano Vigna
%              Copyright (C) 2014 Werner Lemberg
%
%   This file is free software; you can redistribute it and/or modify
%   it under the terms of the GNU General Public License as published by
%   the Free Software Foundation; either version 2 of the License, or
%   (at your option) any later version.
%
%   This program is distributed in the hope that it will be useful,
%   but WITHOUT ANY WARRANTY; without even the implied warranty of
%   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
%   GNU General Public License for more details.
%
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%   along with this program; if not, write to the Free Software
%   Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
%
%
% \fi
%
% \CheckSum{1121}
%% \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         \~}
%%
% \iffalse
%
%<class>\NeedsTeXFormat{LaTeX2e}
%<class>\ProvidesClass{cd}[2014/06/13 v1.4 CD Cover Class]
%
%<*driver>
\documentclass{ltxdoc}
\RecordChanges
\GetFileInfo{cd.cls}

\title{A CD Cover Class}
\date{Printed \today}
\author{Sebastiano Vigna}

\begin{document}
 \maketitle
 \tableofcontents
 \DocInput{cd.dtx}
\end{document}
%</driver>
%
% \fi
%
%
% \changes{v0.0}{1998/06/04}
%   {Created file.}
%
% \changes{v0.1}{1998/06/15}
%   {New macros for data file handling.}
%
% \changes{v1.0}{2002/01/10}
%   {Bump revision number.}
%
% \changes{v1.1}{2005/09/08}
%   {Add support for slim cases.}
% \changes{v1.1}{2005/09/08}
%   {Better positioning, too.}
%
% \changes{v1.3}{2007/10/12}
%   {Implement covergraphics, etc.}
% \changes{v1.3}{2007/10/12}
%   {Implement .dat/.lst filename from job name.}
%
% \changes{v1.4}{2014/06/13}
%   {Make track list height configurable.}
% \changes{v1.4}{2014/06/13}
%   {Add \cs{trackrange} command.}
% \changes{v1.4}{2014/06/13}
%   {Fix typo in \cs{track} command.}
% \changes{v1.4}{2014/06/13}
%   {Make slim and normal back covers use the same height.}
%
%
% \section{Introduction}
%
% The purpose of this class is to print CD covers.  The main design line is
% allowing the creation of labels with minimum effort, without restraining
% the freedom to customise.  There is also some support for multiple cover
% printing.  Since version 1.1, slim CD boxes are supported.
%
% Each CD cover is created by a number of commands that set the content of
% the front cover, back cover, track lists etc.  After everything is ready,
% additional commands actually generate the covers.  This is a very simple
% example:
%
% \begin{verbatim}
% \documentclass{cd}
% \begin{document}
%
% \covertext{
% The Artist\\
% \bfseries The Title
% }
%
% \leftspine{THE ARTIST}
% \centerspine{THE TITLE}
%
% \lefttracklist{
% \track Song 1
% \track Song 2
% \track Song 3
% }
%
% \leftinfo{Words and Music by The Artist}
%
% \makecover\par
% \makeback\par
% \end{document}
% \end{verbatim}
%
% By compiling the file above, you will obtain your first CD cover.  Using
% |\makeslimcover| instead of |\makecover| and |\makeback|, you will obtain
% a single cover for a slim CD box.
%
% Equivalently, you can create a file |CD.dat| containing the lines between
% |\begin{document}| and |\makecover| and compile with \LaTeX{} the file
% |CD.tex| (or |slimCD.tex|).  This is a better mechanism---each CD should
% have its own data (|.dat|) file that is run through the driver file
% |CD.tex| or the more powerful list mechanism described below.  This also
% allows to set some parameters one for all (for instance, the font family)
% in the driver file.  My driver file, for instance, is as follows (see
% below for the non-standard commands):
%
% \begin{verbatim}
% \documentclass[a4paper]{cd}
% \usepackage[latin1]{inputenc}
% \usepackage{avant}
% \renewcommand\rmdefault{\sfdefault}
% \onecorrection{.2}
% \begin{document}
% \makeCD
% \end{document}
% \end{verbatim}
%
% The |CD| class loads the |article| class, so commands like |\Large| or
% |\smallskip| are available.  However, the |CD| class provides its own
% precise size-switching commands, and for greater accuracy it is advisable
% to use \LaTeX's |\\|\oarg{vspace} mechanism in order to generate vertical
% spacing.
%
% Note that the class uses heavily the |rotating| package, so you must
% convert the resulting dvi file into PostScript\textregistered, or use
% directly |pdflatex|.
%
%
% \section{The Text Commands}
%
% The content of a CD cover are set using the following self-explaining
% commands.
%
% \begin{quote}
%   |\covertext|, |\backtext|, |\insidetext|,\\
%   |\leftspine|, |\centerspine|, |\rightspine|,\\
%   |\lefttracklist|, |\righttracklist|,\\
%   |\leftinfo|, |\rightinfo|
% \end{quote}
%
% \noindent The commands |\insidetext|, |\leftspine|, |\centerspine| and
% |\rightspine| are ignored for slim covers.  Note that by default the
% material contained in |\covertext|, |\backtext| and |\insidetext| is
% bottom-aligned, and the arguments of the spine commands must not contain
% line breaks.  The left and right track lists should use the |\track|
% command, which inserts a |\par| and an automatically numbered box with the
% track number.  There is also a |\trackrange| command that takes a
% parameter and adds a range indication (two numbered boxes separated by a
% dash).  Should you need to set manually the track number, use
% |\setindex|\marg{n}.  The text contained in |\leftinfo| and |\rightinfo|
% is bottom-aligned just under the respective track lists.  Note that if the
% right information or track list box is empty, the left one will span
% across the whole cover.  By default everything is typeset with no
% justification, and no paragraph indentation.  One tenth of the current
% baseline skip is inserted between paragraphs.
%
% In extreme cases you may want to create different spines (e.g., for
% R.E.M.'s \emph{Fables Of The Reconstruction}); the |\leftspinebis|,
% |\centerspinebis| and |\rightspinebis| commands allows you to insert
% different content into the ``back'' spine.
%
% The height of the track list (in millimeters) can be set with
% |\tracklistheight|, which expects a dimensionless, positive integer value.
% If not specified, the height is set to 70.  The sum of the track list
% height and the height of the area used to typeset |\covertext| on the back
% cover equals 100.
%
%
% \section{The Graphic Commands}
%
% In the case you want to fill the cover or the inside of your CD with a
% picture, the commands |\covergraphics| and |\insidegraphics| work like
% |\covertext| and |\insidetext|, but they create no border (as opposed to
% the standard 1\,cm border for text).
%
%
% \section{The Font Commands}
%
% The |CD| class provides some simple commands for switching the font
% dimension and line spacing.  The command |\fh|\marg{height} sets the font
% height to the given number of points (line spacing is not affected), while
% |\fhb|\marg{height}\marg{baselineskip} sets both the font height and the
% baseline skip (usually 6/5th of the font height will work).  Note that you
% can just write |\fh7| in order to switch to a 7~point font, and that the
% |\fhb| command always sets |\parskip| to 1/10th of the current baseline
% skip, so |\par| will always space a little more than |\\|.
%
% When you issue a |\newcd| command, all fonts are reset to their default
% values.  But there are a number of self-explaining commands, i.e.,
% |\coverfont|, |\backfont|, |\insidefont|, |\spinefont|, |\tracklistfont|,
% |\infofont| and |\indexfont|, that allow to change the font assigned to a
% part of the cover.  In fact, they are just one-argument macros whose
% arguments are expanded just before the corresponding text commands, and
% can contain other formatting parameters.
%
%
% \section{The Cover Creation Commands}
%
% Before setting the content of the cover, the |\newcd| command takes care
% of resetting everything to default values.  In particular, |\backtext| is
% the same as |\covertext| (unless you change it explicitly), so usually you
% do not need to set the former (note that, of course, this does \emph{not}
% happen with |\covergraphics|).  Analogously, |\backfont| is the same as
% |\coverfont|.
%
% Once everything is set up, the |\makecover| and |\makeback| commands will
% create a cover and a back cover using the data set so far, whereas the
% |\makeslimcover| will create a slim cover.  Both commands have an optional
% argument that can contain any of the letters |lrtb| (left, right, top,
% bottom), which create the respective crop marks (note that the argument
% must be enclosed in brackets).  The default value is |lrtb|.  The
% possibility of partially eliminating crop marks is particularly useful
% when stacking several covers in the same sheet.
%
% It is possible to create a single \LaTeX{} document containing a CD cover,
% but it is usually more useful to create a data file containing all
% |CD|-specific command, and include it from a ``driver'' file, containing
% the |\makeCD| or the |\makeslimCD| command.  With no argument, it checks
% for the existence of a \textit{jobname}|.dat| file (where \textit{jobname}
% is the root of the \LaTeX{} file under compilation---e.g., |CD.dat| when
% compiling |CD.tex|).  If such a file exists, it is input and then the
% (slim) CD cover is generated.  Otherwise, the user is asked for a data
% file name (the |CD| class will try automatically to append the |.dat|
% extension to the name), which is read and processed.  Of course, the
% optional argument (which, note again, must be enclosed in brackets) can be
% used to specify a data file name.
%
% Having a database of data files is particularly useful when using the
% |\makelist| or the |\makeslimlist| commands, which process an entire list
% of CDs, printing one cover (or two back covers) per page; the crop marks
% are suitably aligned so to minimise the cutting effort.  The CD list must
% be contained in a list file, one data file name per line.  With no
% argument, |\makelist| and |\makeslimlist| check for the existence of a
% |CD.lst| file.  If it exists, it is input; otherwise, the user is asked
% for a list file name (the |CD| class will try automatically to append the
% |.lst| extension to the name), which is read and processed.  Again, the
% optional argument can be used to specify a list file name.
%
%
% \section{The Options}
%
% You can pass to the |CD| class all the options of the |article| class
% (e.g., paper size).  Moreover, there are options |aligncovertop|,
% |aligninsidetop|, |alignbacktop| and |aligntop| (the last one resumes the
% first three ones), and analogously |aligncovercenter|, etc., that allow to
% change the default alignment behaviour.  The |covergraphics| option lets
% you use the entire cover area (instead of a centered 10\,cm$\times$10\,cm
% square).  Finally, the |alignspine| option forces vertical centring of the
% spine text on the ``real'' height of the box involved, rather than on the
% height of a generic upper case character.  This is not usually what you
% want, since, e.g., accents can lead to ugly results.  Experiment.
%
%
% \section{Getting Obsessed}
%
% PostScript fonts usually are set up in such a way that the metric of all
% digits is the same, regardless of the actual appearance.  This (in
% particular with sans-serif fonts) can lead to a very ugly alignment of
% two-digit track numbers in which either the first or the last digit is
% a~1.  The solution is to put in the preamble a
% |\onecorrection|\marg{fraction} command: the positioning of two-digit
% numbers either starting or ending with 1 will be corrected by the given
% fraction of the width of a~1.  For instance, |\onecorrection{.2}| works
% great for AvantGarde.  The values for other fonts must be set by
% trial-and-error.
%
%
% \StopEventually{}
%
%
% \section{The Code}
%
% First of all we manage all options.  This is done with a |\newif| for
% |alignspine|, and by defining suitably some macros representing the
% alignment option for the cover, inside and back text.  Default is~|b|.
% All options we do not process are passed to the |article| class.
%
%    \begin{macrocode}
%<*class>
\newif\if@lignspine
\@lignspinefalse

\DeclareOption{alignspine}{\@lignspinetrue}

\def\@ligncover{b}
\def\@ligninside{b}
\def\@lignback{b}

\DeclareOption{aligncovertop}{\def\@ligncover{t}}
\DeclareOption{aligninsidetop}{\def\@ligninside{t}}
\DeclareOption{alignbacktop}{\def\@lignback{t}}

\DeclareOption{covergraphics}{\def\@lignback{t}}

\DeclareOption{aligntop}%
  {\ExecuteOptions{aligncovertop,
                   aligninsidetop,
                   alignbacktop}}

\DeclareOption{aligncovercenter}{\def\@ligncover{c}}
\DeclareOption{aligninsidecenter}{\def\@ligninside{c}}
\DeclareOption{alignbackcenter}{\def\@lignback{c}}

\DeclareOption{aligncenter}%
  {\ExecuteOptions{aligncovercenter,
                   aligninsidecenter,
                   alignbackcenter}}

\DeclareOption*{\PassOptionsToClass{\CurrentOption}{article}}

\ProcessOptions\relax
%    \end{macrocode}
%
% Now we load the |article| class and the |rotating| package, which is
% fundamental in typesetting the spine text.
%
%    \begin{macrocode}
\LoadClass{article}
\RequirePackage{rotating}
%    \end{macrocode}
%
% The |\onecorrection| command defines a the fraction used for
% correcting the alignment of 1's.  The default is~0.
%
%    \begin{macrocode}
\DeclareRobustCommand*\onecorrection[1]{\def\onec@rrfrac{#1}}
\onecorrection{0}
%    \end{macrocode}
%
% Now we have all the font and text declaration commands.  They just define
% a certain macro to be their argument.
%
%    \begin{macrocode}
\DeclareRobustCommand*{\coverfont}[1]{\def\coverf@nt{#1}}
\DeclareRobustCommand*{\backfont}[1]{\def\backf@nt{#1}}
\DeclareRobustCommand*{\insidefont}[1]{\def\insidef@nt{#1}}
\DeclareRobustCommand*{\spinefont}[1]{\def\spinef@nt{#1}}
\DeclareRobustCommand*{\tracklistfont}[1]{\def\tracklistf@nt{#1}}
\DeclareRobustCommand*{\infofont}[1]{\def\infof@nt{#1}}
\DeclareRobustCommand*{\indexfont}[1]{\def\indexf@nt{#1}}

\DeclareRobustCommand{\lefttracklist}[1]{\def\lefttr@cklist{#1}}
\DeclareRobustCommand{\righttracklist}[1]{\def\righttr@cklist{#1}}
\DeclareRobustCommand{\leftinfo}[1]{\def\leftinf@{#1}}
\DeclareRobustCommand{\rightinfo}[1]{\def\rightinf@{#1}}
\DeclareRobustCommand{\covertext}[1]{\def\c@vertext{#1}}
\DeclareRobustCommand{\backtext}[1]{\def\b@cktext{#1}}
\DeclareRobustCommand{\insidetext}[1]{\def\insid@text{#1}}

\DeclareRobustCommand{\covergraphics}[1]{%
  \def\c@vertext{#1}\def\c@vergraphics{}}
\DeclareRobustCommand{\insidegraphics}[1]{%
  \def\insid@text{#1}\def\insid@graphics{}}

\DeclareRobustCommand*{\leftspine}[1]{\def\leftspin@{#1}}
\DeclareRobustCommand*{\centerspine}[1]{\def\centerspin@{#1}}
\DeclareRobustCommand*{\rightspine}[1]{\def\rightspin@{#1}}
\DeclareRobustCommand*{\leftspinebis}[1]{\def\leftspin@bis{#1}}
\DeclareRobustCommand*{\centerspinebis}[1]{\def\centerspin@bis{#1}}
\DeclareRobustCommand*{\rightspinebis}[1]{\def\rightspin@bis{#1}}

\DeclareRobustCommand*{\tracklistheight}[1]{%
  \begingroup
    \xdef\tr@cklistheight{#1}%
    \@tempcnta=100
    \advance\@tempcnta by -\tr@cklistheight
    \xdef\c@vertextheight{\the\@tempcnta}%
    \@tempcnta=12
    \advance\@tempcnta by \tr@cklistheight
    \xdef\c@verpos{\the\@tempcnta}%
  \endgroup
}
%    \end{macrocode}
%
% We do not want any |lineskip|, as stacked covers should not be separated
% by any space.  Analogously, we want no margins, no indentation and no
% hyphenation.  Offsets will be set command by each command.
%
%    \begin{macrocode}
\evensidemargin=0cm
\oddsidemargin=0cm
\topmargin=0cm
\headheight=0cm
\headsep=0cm
\footskip=0cm
\textwidth=\paperwidth
%\advance\textwidth by -3cm
\textheight=\paperheight
%\advance\textheight by -3cm

\lineskip=0pt
\lineskiplimit=0pt
\parskip=0pt
\parindent=0pt
\hyphenpenalty=10000
%    \end{macrocode}
%
% We set the unit for the |picture| environment to 1\,mm and prepare a
% number of lengths that will be useful in aligning track numbers and spine
% text.  |\squ@re| holds the side length of the square framing the track
% numbers.  |\h@nging| is its hanging amount.  |\h@ngingg| is the hanging
% amount of a track range.  |\@hstrip| and |\@wstrip| are used when aligning
% the spine.  |\winf@| and |\wtr@cklist| are the width of the information
% and tracklist minipages.
%
%    \begin{macrocode}
\setlength{\unitlength}{1mm}
\newlength{\squ@re}
\newlength{\@temp}
\newlength{\@tempp}
\newlength{\d@shwidth}
\newlength{\h@nging}
\newlength{\h@ngingg}
\newlength{\@hstrip}
\newlength{\@wstrip}
\newlength{\winf@}
\newlength{\wtr@cklist}
\newlength{\onec@rrection}
%    \end{macrocode}
%
% The |\tr@ck| command typesets a hanging framed box with a small number
% inside.  The number is given by a counter that is reset to~1 at each
% |\makeback|, and can be changed manually with the |\setindex| command.
% Two parameters makes it possible to set the hanging amount and the amount
% of space that follows the box.  The alignment inside the small box will be
% corrected for numbers either starting or ending with a~1 by the fraction
% of the width of~1 specified with the |\onecorrection| command.  The
% associated user commands are |\track| and |\trackrange|; the latter makes
% it possible to typeset a range given its length.
%
%    \begin{macrocode}
\newcounter{tr@ckindex}
\DeclareRobustCommand*{\setindex}[1]{\setcounter{tr@ckindex}{#1}}

\DeclareRobustCommand*{\tr@ck}[2]{%
  \let\@firstdigit=\@empty
  \setlength{\onec@rrection}{0pt}%
  \settowidth{\@temp}{\indexf@nt1}%
  \expandafter\@tfor \expandafter\@digit
   \expandafter:\expandafter=\number\value{tr@ckindex}\do {%
    \ifx\@firstdigit\@empty
      \let\@firstdigit=\@digit
    \else
      \if 1\@firstdigit
        \if 1\@digit\else
          \setlength{\onec@rrection}{-\onec@rrfrac\@temp}%
        \fi
      \else
        \if 1\@digit
          \setlength{\onec@rrection}{\onec@rrfrac\@temp}%
        \fi
      \fi
    \fi
  }%
  \setlength{\@temp}{\squ@re}%
  \settoheight{\@tempp}{\tracklistf@nt M}%
  \addtolength{\@temp}{-\@tempp}%
  \raisebox{-.5\@temp}{%
    \setlength{\unitlength}{\squ@re}%
    \hspace*{-#1}%
    \begin{picture}(1,1)
      \put(0,0){%
        \framebox(1,1){%
          \hspace*{\onec@rrection}\indexf@nt\thetr@ckindex}%
        }
    \end{picture}%
  }%
  \hspace*{#2}%
  \addtocounter{tr@ckindex}{1}%
}

\DeclareRobustCommand*{\track}{%
  \par\tr@ck{\h@nging}{6pt}%
}

\DeclareRobustCommand*{\trackrange}[1]{%
  \par
  \tr@ck{\h@ngingg}{1pt}%
  \addtocounter{tr@ckindex}{#1}%
  \addtocounter{tr@ckindex}{-2}%
  \settoheight{\@temp}{\indexf@nt M}%
  \settoheight{\@tempp}{\tracklistf@nt M}%
  \addtolength{\@temp}{-\@tempp}%
  \raisebox{-.5\@temp}{\indexf@nt-}%
  \hspace*{1pt}%
  \tr@ck{0pt}{6pt}%
}
%    \end{macrocode}
%
% We declare some utility commands that allow for easy font dimension
% switch.  The |\newcd| command resets font and text values to its default
% values.
%
%    \begin{macrocode}
\AtBeginDocument{%
  \pagestyle{empty}%
  \thispagestyle{empty}%
  \newcd
}

\DeclareRobustCommand*{\fhb}[2]{%
  \fontsize{#1pt}{#2pt}\selectfont
  \parskip=.1\baselineskip
}

\DeclareRobustCommand*{\fh}[1]{%
  \fontsize{#1pt}{\baselineskip}\selectfont
}

\DeclareRobustCommand*{\newcd}{%
  \lefttracklist{}%
  \righttracklist{}%
  \covertext{}%
  \insidetext{}%
  \leftspine{}%
  \centerspine{}%
  \rightspine{}%
  \leftspinebis{\leftspin@}%
  \centerspinebis{\centerspin@}%
  \rightspinebis{\rightspin@}%
  \leftinfo{}%
  \rightinfo{}%
  \coverfont{\fhb{16}{19}}%
  \backfont{\coverf@nt}%
  \insidefont{\fhb{10}{12}}%
  \spinefont{\fhb{9}{11}\bfseries}%
  \tracklistfont{\fhb{9}{10.5}}%
  \infofont{\fhb{7}{8.3}}%
  \indexfont{\fhb{5}{0}}%
  \tracklistheight{70}%
}
%    \end{macrocode}
%
% The following two commands are useful in alignment.  The first command
% decides the height and width of a given strip of text, to be inserted in
% the spine.  The point is that unless the |alignspine| option has been
% requested, we do not set |\@hstrip|, which has been set previously to the
% maximum height of a capital letter.  The |\alignt@baseline| command is
% used at the end of boxes that could be bottom aligned: it eliminates the
% additional height inserted when a box's last line has a descender.
%
%    \begin{macrocode}
\DeclareRobustCommand*{\@sethwstrips}[1]{%
  \settowidth{\@wstrip}{\spinef@nt #1}%
  \if@lignspine
    \settoheight{\@hstrip}{\spinef@nt #1}%
  \fi
}

\DeclareRobustCommand*{\alignt@baseline}{%
  \settodepth{\@temp}{gjpqy}%
  \vphantom{gjpqy}\par
  \vspace*{-\@temp}\par
}
%    \end{macrocode}
%
% It is now easy to write down the |\makecover| command.  It is just a
% matter of laying out the material and printing the requested crop marks.
%
%    \begin{macrocode}
\DeclareRobustCommand*{\makecover}[1][lrtb]{%
  \voffset=0in
  \begin{picture}(120,240)
  \end{picture}%
  \begin{rotate}{90}%
    \begin{picture}(240,120)
      \@tfor\cr@pmark := #1 \do {
        \if l\cr@pmark
          \put(-1,0){\line(-1,0){5}}
          \put(-1,120){\line(-1,0){5}}
        \else\if r\cr@pmark
          \put(241,0){\line(1,0){5}}
          \put(241,120){\line(1,0){5}}
        \else\if b\cr@pmark
          \put(0,-1){\line(0,-1){5}}
          \put(240,-1){\line(0,-1){5}}
          \put(120,-1){\line(0,-1){1}}
          \put(120,-3){\line(0,-1){1}}
          \put(120,-5){\line(0,-1){1}}
        \else\if t\cr@pmark
          \put(0,121){\line(0,1){5}}
          \put(240,121){\line(0,1){5}}
          \put(120,121){\line(0,1){1}}
          \put(120,123){\line(0,1){1}}
          \put(120,125){\line(0,1){1}}
        \else\if c\cr@pmark
          \put(0,0){\line(1,0){240}}
          \put(0,0){\line(0,1){120}}
          \put(120,0){\line(0,1){120}}
          \put(0,120){\line(1,0){240}}
          \put(240,0){\line(0,1){120}}
        \fi\fi\fi\fi\fi
      }

      \ifx\insid@graphics\@empty
        \put(0,0){%
          \makebox(120,120)[\@ligninside]{%
            \parbox{12cm}{%
               \raggedright
               \insidef@nt
               \insid@text
               \alignt@baseline}}}
      \else
        \put(10,10){%
          \makebox(100,100)[\@ligninside]{%
            \parbox{10cm}{%
              \raggedright
              \insidef@nt
              \insid@text
              \alignt@baseline}}}
      \fi
      \ifx\c@vergraphics\@empty
        \put(120,0){%
          \makebox(120,120)[\@ligncover]{%
            \parbox{12cm}{%
              \raggedright
              \coverf@nt
              \c@vertext
              \alignt@baseline}}}
      \else
        \put(130,10){%
          \makebox(100,100)[\@ligncover]{%
            \parbox{10cm}{%
              \raggedright
              \coverf@nt
              \c@vertext
              \alignt@baseline}}}
      \fi
    \end{picture}%
  \end{rotate}%
}
%    \end{macrocode}
%
% The |\makeback| command is slightly more complicated, as it must set up
% come values for the |\track| command to work.  Moreover, it has to check
% for empty right information or tracklist minipages, as in this case the
% left ones must be enlarged, and it must try to use the text from the cover
% page if no back text has been specified.
%
%    \begin{macrocode}
\DeclareRobustCommand*{\makeback}[1][lrtb]{%
  \voffset=-.5in
  \setindex{1}%
  \settowidth{\d@shwidth}{\indexf@nt-}%
  \settowidth{\squ@re}{\indexf@nt00}%
  \settoheight{\@temp}{\indexf@nt0}%
  \addtolength{\squ@re}{.4\@temp}%
  \setlength{\h@nging}{\squ@re}%
  \setlength{\h@ngingg}{\squ@re}%
  \addtolength{\h@ngingg}{\squ@re}%
  \addtolength{\h@ngingg}{\d@shwidth}%
  \addtolength{\h@nging}{6pt}%
  \addtolength{\h@ngingg}{8pt}%
  \settoheight{\@hstrip}{\spinef@nt ABCDEFGHIJKLMNOPQRSTUVWXYZ}%
%
  \ifx\righttr@cklist\@empty
    \setlength{\wtr@cklist}{12cm}%
  \else
    \setlength{\wtr@cklist}{5.5cm}%
  \fi
%
  \ifx\rightinf@\@empty
    \setlength{\winf@}{12cm}%
  \else
    \setlength{\winf@}{5.5cm}%
  \fi
%
  \begin{picture}(151,118)
    \@tfor\cr@pmark := #1 \do {
      \if l\cr@pmark
        \put(-1,0){\line(-1,0){5}}
        \put(-1,118){\line(-1,0){5}}
      \else\if r\cr@pmark
        \put(152,0){\line(1,0){5}}
        \put(152,118){\line(1,0){5}}
      \else\if b\cr@pmark
        \put(0,-1){\line(0,-1){5}}
        \put(151,-1){\line(0,-1){5}}
        \put(6.5,-1){\line(0,-1){1}}
        \put(6.5,-3){\line(0,-1){1}}
        \put(6.5,-5){\line(0,-1){1}}
        \put(144.5,-1){\line(0,-1){1}}
        \put(144.5,-3){\line(0,-1){1}}
        \put(144.5,-5){\line(0,-1){1}}
      \else\if t\cr@pmark
        \put(0,119){\line(0,1){5}}
        \put(151,119){\line(0,1){5}}
        \put(6.5,119){\line(0,1){1}}
        \put(6.5,121){\line(0,1){1}}
        \put(6.5,123){\line(0,1){1}}
        \put(144.5,119){\line(0,1){1}}
        \put(144.5,121){\line(0,1){1}}
        \put(144.5,123){\line(0,1){1}}
      \else\if c\cr@pmark
        \put(0,0){\line(1,0){151}}
        \put(0,0){\line(0,1){118}}
        \put(151,0){\line(0,1){118}}
        \put(0,118){\line(1,0){151}}
        \put(6.5,0){\line(0,1){118}}
        \put(144.5,0){\line(0,1){118}}
      \fi\fi\fi\fi\fi
    }

    \@sethwstrips{\leftspin@}

    \put(0,4){%
      \makebox(6.5,110)[b]{%
        \makebox[\@hstrip][r]{%
          \begin{rotate}{90}%
            \spinef@nt
            \leftspin@
          \end{rotate}}}}

    \@sethwstrips{\centerspin@}

    \put(0,4){%
      \makebox(6.5,110){%
        \raisebox{0pt}[\@wstrip]{%
          \makebox[\@hstrip][r]{%
            \begin{rotate}{90}%
              \spinef@nt
              \centerspin@
            \end{rotate}}}}}

    \@sethwstrips{\rightspin@}

    \put(0,4){%
      \makebox(6.5,110)[t]{%
        \raisebox{0pt}[\@wstrip]{%
          \makebox[\@hstrip][r]{%
            \begin{rotate}{90}%
              \spinef@nt
              \rightspin@
            \end{rotate}}}}}

    \@sethwstrips{\leftspin@bis}

    \put(144.5,4){%
      \makebox(6.5,110)[t]{%
        \makebox[\@hstrip][l]{%
          \begin{rotate}{-90}%
            \spinef@nt
            \leftspin@bis
          \end{rotate}}}}

    \@sethwstrips{\centerspin@bis}

    \put(144.5,4){%
      \makebox(6.5,110){%
        \raisebox{\@wstrip}[\@wstrip]{%
          \makebox[\@hstrip][l]{%
            \begin{rotate}{-90}%
              \spinef@nt
              \centerspin@bis
            \end{rotate}}}}}

    \@sethwstrips{\rightspin@bis}

    \put(144.5,4){%
      \makebox(6.5,110)[b]{%
        \raisebox{\@wstrip}[\@wstrip]{%
          \makebox[\@hstrip][l]{%
            \begin{rotate}{-90}%
              \spinef@nt
              \rightspin@bis
            \end{rotate}}}}}

    \put(17,0){%
      \begin{picture}(121,118)
        \put(0,\c@verpos){%
          \makebox(120,\c@vertextheight)[\@lignback]{%
            \parbox{12.1cm}{%
              \raggedright
              \backf@nt
              \ifx\b@cktext\undefined
                \ifx\c@vergraphics\@empty\else\c@vertext\fi
              \else
                \b@cktext
              \fi
              \alignt@baseline}}}

        \put(0,5){%
          \makebox(55,\tr@cklistheight)[tl]{%
            \begin{minipage}{\wtr@cklist}%
              \lineskip=.5pt
              \lineskiplimit=1pt
              \raggedright
              \tracklistf@nt
              \lefttr@cklist
            \end{minipage}}}

        \put(65,5){%
          \makebox(55,\tr@cklistheight)[tl]{%
            \begin{minipage}{\wtr@cklist}%
              \lineskip=.5pt
              \lineskiplimit=1pt
              \raggedright
              \tracklistf@nt
              \righttr@cklist
            \end{minipage}}}

        \put(0,5){%
          \makebox(0,0)[bl]{%
            \parbox{\winf@}{%
              \raggedright
              \infof@nt
              \leftinf@
              \alignt@baseline}}}

        \put(65,5){%
          \makebox(0,0)[bl]{%
            \parbox{\winf@}{%
              \raggedright
              \infof@nt
              \rightinf@
              \alignt@baseline}}}
      \end{picture}%
    }
  \end{picture}%
}
%    \end{macrocode}
%
% The |\makeslimcover| command is essentially a mix of the previous two, as
% a single slim cover must contain the front matter and the track lists.
% Note that we have much less space.
%
%    \begin{macrocode}
\DeclareRobustCommand*{\makeslimcover}[1][lrtb]{%
  \voffset=0in
  \setindex{1}%
  \settowidth{\d@shwidth}{\indexf@nt-}%
  \settowidth{\squ@re}{\indexf@nt00}%
  \settoheight{\@temp}{\indexf@nt0}%
  \addtolength{\squ@re}{.4\@temp}%
  \setlength{\h@nging}{\squ@re}%
  \setlength{\h@ngingg}{\squ@re}%
  \addtolength{\h@ngingg}{\squ@re}%
  \addtolength{\h@ngingg}{\d@shwidth}%
  \addtolength{\h@nging}{6pt}%
  \addtolength{\h@ngingg}{8pt}%
  \settoheight{\@hstrip}{\spinef@nt ABCDEFGHIJKLMNOPQRSTUVWXYZ}%
%
  \ifx\righttr@cklist\@empty
    \setlength{\wtr@cklist}{10cm}%
  \else
    \setlength{\wtr@cklist}{4.7cm}%
  \fi
%
  \ifx\rightinf@\@empty
    \setlength{\winf@}{10cm}%
  \else
    \setlength{\winf@}{4.7cm}%
  \fi
%
  \begin{picture}(120,240)
  \end{picture}%
  \begin{rotate}{90}%
    \begin{picture}(240,120)
      \@tfor\cr@pmark := #1 \do {
        \if l\cr@pmark
          \put(-1,0){\line(-1,0){5}}
          \put(-1,120){\line(-1,0){5}}
        \else\if r\cr@pmark
          \put(241,0){\line(1,0){5}}
          \put(241,120){\line(1,0){5}}
        \else\if b\cr@pmark
          \put(0,-1){\line(0,-1){5}}
          \put(240,-1){\line(0,-1){5}}
          \put(120,-1){\line(0,-1){1}}
          \put(120,-3){\line(0,-1){1}}
          \put(120,-5){\line(0,-1){1}}
        \else\if t\cr@pmark
          \put(0,121){\line(0,1){5}}
          \put(240,121){\line(0,1){5}}
          \put(120,121){\line(0,1){1}}
          \put(120,123){\line(0,1){1}}
          \put(120,125){\line(0,1){1}}
        \else\if c\cr@pmark
          \put(0,0){\line(1,0){240}}
          \put(0,0){\line(0,1){120}}
          \put(120,0){\line(0,1){120}}
          \put(0,120){\line(1,0){240}}
          \put(240,0){\line(0,1){120}}
        \fi\fi\fi\fi\fi
      }

      \put(11,0){%
        \begin{picture}(100,120)
          \put(0,\c@verpos){%
            \makebox(100,\c@vertextheight)[\@lignback]{%
              \parbox{10.1cm}{%
                \raggedright
                \backf@nt
                \ifx\b@cktext\undefined
                  \ifx\c@vergraphics\@empty\else\c@vertext\fi
                \else
                  \b@cktext
                \fi
                \alignt@baseline}}}

          \put(0,5){%
            \makebox(47,\tr@cklistheight)[tl]{%
              \begin{minipage}{\wtr@cklist}%
                \lineskip=.5pt
                \lineskiplimit=1pt
                \raggedright
                \tracklistf@nt
                \lefttr@cklist
              \end{minipage}}}

          \put(55,5){%
            \makebox(47,\tr@cklistheight)[tl]{%
              \begin{minipage}{\wtr@cklist}%
                \lineskip=.5pt
                \lineskiplimit=1pt
                \raggedright
                \tracklistf@nt
                \righttr@cklist
              \end{minipage}}}

          \put(0,5){%
            \makebox(0,0)[bl]{%
              \parbox{\winf@}{%
                \raggedright
                \infof@nt
                \leftinf@
                \alignt@baseline}}}

          \put(55,5){%
            \makebox(0,0)[bl]{%
              \parbox{\winf@}{%
                \raggedright
                \infof@nt
                \rightinf@
                \alignt@baseline}}}
        \end{picture}%
      }
      \ifx\c@vergraphics\@empty
        \put(120,0){%
          \makebox(120,120)[\@ligncover]{%
            \parbox{12cm}{%
              \raggedright
              \coverf@nt
              \c@vertext
              \alignt@baseline}}}
      \else
        \put(130,10){%
          \makebox(100,100)[\@ligncover]{%
            \parbox{10cm}{%
              \raggedright
              \coverf@nt
              \c@vertext
              \alignt@baseline}}}
      \fi
    \end{picture}%
  \end{rotate}%
}
%    \end{macrocode}
%
% Finally, we have the high-level commands that allow to produce one or
% several CD from data files, |\makeCD|, |\makelist|, |\makeslimCD| and
% |\makeslimlist|.  All have an additional argument for the file name,
% defaulting to |\jobname.dat| or |\jobname.lst|.
%
% Two separate commands factor out the checks and the user interaction in
% case the file is not specified or does not exist.
%
% A data file must contain only text declaration commands from the |CD|
% class.  All \LaTeX{} stuff (preamble, etc.) and cover generation commands
% are handled automatically.  A list file must contain a number of lines,
% each containing a data file name.
%
%    \begin{macrocode}
\DeclareRobustCommand*{\@skCDfile}[1]{%
  \def\CDname{#1}%
  \ifx\CDname\@empty
    \IfFileExists{\jobname.dat}{%
      \def\CDname{\jobname.dat}%
    }{%
      \typein[\CDname]{Please insert CD data file name:}%
    }%
  \fi
  \InputIfFileExists{\CDname.dat}{%
  }{%
    \InputIfFileExists{\CDname}{%
    }{%
      \ClassError{cd}
                 {CD data file (\CDname.dat or \CDname) not found}
                 {}%
    }%
  }%
}

\DeclareRobustCommand*{\makeCD}[1][]{%
  \@skCDfile{#1}%
  \makecover\par
  \makeback\par
}

\DeclareRobustCommand*{\makeslimCD}[1][]{%
  \@skCDfile{#1}%
  \makeslimcover\par
}

\newread\CDlist

\newcounter{@cd}
\setcounter{@cd}{0}

\newif\ifne@f

\DeclareRobustCommand*{\@sklistfile}[1]{%
  \def\CDlistname{#1}%
  \ifx\CDlistname\@empty
    \IfFileExists{\jobname.lst}{%
      \def\CDlistname{\jobname.lst}%
    }{%
      \typein[\CDlistname]{Please insert CD list file name:}
    }%
  \fi
  \IfFileExists{\CDlistname.lst}{%
    \immediate\openin\CDlist=\CDlistname.lst
  }{%
    \IfFileExists{\CDlistname}{%
      \immediate\openin\CDlist=\CDlistname
    }{%
      \ClassError{cd}
                 {CD list (\CDlistname.lst or \CDlistname) not found}
                 {}%
    }%
  }%
  \ne@ftrue
}

\DeclareRobustCommand*{\makelist}[1][]{%
  \@sklistfile{#1}%
  \advance\endlinechar\@M
  \immediate\read\CDlist to \CDname
  \advance\endlinechar-\@M
  \ifeof\CDlist\ne@ffalse\fi
%
  \@whilesw \ifne@f \fi {%
    \newcd
    \InputIfFileExists{\CDname.dat}{%
    }{%
      \InputIfFileExists{\CDname}{%
      }{%
        \ClassError{cd}
                   {CD data file (\CDname.dat or \CDname) not found}
                   {}%
      }%
    }%
    \advance\endlinechar\@M
    \immediate\read\CDlist to \CDname
    \advance\endlinechar-\@M
    \ifeof\CDlist\ne@ffalse\fi
    \ifodd\value{@cd}%
      \makeback[lrb]\par
      \makecover\par
    \else
      \makecover\par
      \ifne@f\makeback[lrt]\else\makeback\fi\par
    \fi
    \addtocounter{@cd}{1}%
  }%
}

\DeclareRobustCommand*{\makeslimlist}[1][]{%
  \@sklistfile{#1}%
  \advance\endlinechar\@M
  \immediate\read\CDlist to \CDname
  \advance\endlinechar-\@M
  \ifeof\CDlist\ne@ffalse\fi
%
  \@whilesw \ifne@f \fi {%
    \newcd
    \InputIfFileExists{\CDname.dat}{%
    }{%
      \InputIfFileExists{\CDname}{%
      }{%
        \ClassError{cd}
                   {CD data file (\CDname.dat or \CDname) not found}
                   {}%
      }%
    }%
    \advance\endlinechar\@M
    \immediate\read\CDlist to \CDname
    \advance\endlinechar-\@M
    \ifeof\CDlist\ne@ffalse\fi
    \makeslimcover\par
  }%
}
%</class>
%    \end{macrocode}
% \Finale
%
% \PrintChanges
% \addcontentsline{toc}{section}{Change History}

\endinput