unix-x.sty

%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%
% Written by Per Foreby <per.foreby@kansli.lth.se> 1995-1999
%
% Permission is granted to non-profit organisations to use this
% code any way you want, as long as you don't pretend you wrote it!
%
% Credit where credit is due!
%
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
\NeedsTeXFormat{LaTeX2e}
\ProvidesPackage{unix-x}

\newif\iffinal                  % initially false
\newif\ifgray                   % initially false
\newif\ifhtml                   % initially false

\DeclareOption{nogray}{\grayfalse}
\DeclareOption{gray}{\graytrue}
\DeclareOption{draft}{\finalfalse}
\DeclareOption{final}{\finaltrue}
\DeclareOption{html}{\htmltrue}
\DeclareOption{nohtml}{\htmlfalse}
\ExecuteOptions{gray}
\ExecuteOptions{final}
\ExecuteOptions{nohtml}
\ProcessOptions

%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
% pdftex
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
\usepackage{ifpdf}

\ifpdf
  \pdfoutput=1           
  \pdftrue               %% pdfLaTeX is executed
\else
  \pdfoutput=0
  \pdffalse              %% normal LaTeX is executed
\fi

%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
% Print "Utkast"
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
\iffinal
\else
\special{!userdict begin /bop-hook{gsave 200 30 translate
    65 rotate /Times-Roman findfont 200 scalefont setfont
    0 0 moveto 0.98 setgray (UTKAST) show grestore}def end}
\fi

%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
% Page measurements
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
\addtolength{\textwidth}{20mm}
\addtolength{\oddsidemargin}{2mm}
\addtolength{\evensidemargin}{-22mm}
\addtolength{\topmargin}{-25mm}
\addtolength{\headsep}{-10pt}
\addtolength{\textheight}{60mm}
%\setlength{\columnsep}{5mm}
% Don't use a visible column separator when running
% latex2html. Otherwise cropping of pictures won't work.
\newlength{\my@colseprule}
\ifhtml
  \setlength{\my@colseprule}{0pt}
\else
  \setlength{\my@colseprule}{.4pt}
\fi
\setlength{\columnseprule}{\my@colseprule}
\setlength{\parindent}{0pt}
\setlength{\parskip}{\medskipamount}
\setlength{\unitlength}{1mm}          % Skalfaktor för pictureomgivningen.
\renewcommand{\baselinestretch}{0.95}

% Change to avoid columnseprule and page headers on empty pages.
\def\cleardoublepage{\clearpage\if@twoside \ifodd\c@page\else
  \thispagestyle{empty}\setlength{\columnseprule}{0pt}\hbox{}\newpage%
  \if@twocolumn\hbox{}\newpage\fi%
  \setlength{\columnseprule}{\my@colseprule}\fi\fi}

\renewcommand\appendixname{Appendix}

%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
% Fonts
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
\renewcommand{\sfdefault}{pag}          % Avant garde
\renewcommand{\rmdefault}{ptm}          % Times
\renewcommand{\ttdefault}{pcr}          % Courier

%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
% Toc should be multicolumn (and no uppercase in headings)
% Also, make list of figures and tables sections instead of chapters.
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
\renewcommand\tableofcontents{%
  \setcounter{tocdepth}{2}%
  \chapter*{\contentsname\@mkboth{\contentsname}{\contentsname}}%
  \@starttoc{toc}%
  \section*{\listfigurename}%
  \@starttoc{lof}%
  \section*{\listtablename}%
  \@starttoc{lot}%
}


%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
% Chapter and section headers redefined to use sans serif fonts and
% to be slightly larger. (Original definitions from book.cls)
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
\def\@makechapterhead#1{%
  \vspace*{50\p@}%
  {\parindent \z@ \raggedright \reset@font
    \ifnum \c@secnumdepth >\m@ne
       \if@mainmatter
         \huge\sffamily\bfseries \@chapapp{} \thechapter
         \par
         \vskip 20\p@
       \fi
       \fi
    \Huge \sffamily\bfseries #1\par
    \nobreak
    \vskip 40\p@
  }}
\def\@makeschapterhead#1{%
  \vspace*{50\p@}%
  {\parindent \z@ \raggedright
    \reset@font
    \Huge \sffamily\bfseries  #1\par
    \nobreak
    \vskip 40\p@
  }}
\renewcommand\section{\@startsection{section}{1}{\z@}%
  {-3.5ex \@plus -1ex \@minus -.2ex}{2.3ex \@plus.2ex}%
  {\reset@font\LARGE\sffamily\bfseries}}
\renewcommand\subsection{\@startsection{subsection}{2}{\z@}%
  {-3.25ex\@plus -1ex \@minus -.2ex}{1.5ex \@plus .2ex}%
  {\reset@font\Large\sffamily\bfseries}}

% Don't number subsections, and indent them more in the toc
\setcounter{secnumdepth}{1}
\renewcommand\l@subsection{\@dottedtocline{2}{4.8em}{3.2em}}

%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
% Page headers
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
\RequirePackage{fancyheadings}
\pagestyle{fancyplain}
\renewcommand{\chaptermark}[1]{\markboth{#1}{#1}}
\renewcommand{\sectionmark}[1]{\markright{\thesection\ #1}}
\newcommand{\SB}[1]{\textsf{\textbf{#1}}}
\lhead[\fancyplain{\SB{\thepage}}{\SB{\thepage}}]
      {\fancyplain{}{\SB{\rightmark}}}
\rhead[\fancyplain{}{\SB{\leftmark}}]
      {\fancyplain{\SB{\thepage}}{\SB{\thepage}}}
\cfoot{}

% \hours prints HOUR:MINUTE
\newcount\m \newcount\n
\def\hours{\n=\time \divide\n 60
  \m=-\n \multiply\m 60 \advance\m \time
  \twodigits\n:\twodigits\m}
\def\twodigits#1{\ifnum #1<10 0\fi \number#1}

\iffinal\else\chead{\textbf{%
    Korrekturex --- ej för tryckning --- \today\ \hours}}\fi

%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
% Make an evironment "exercise". It will print a theorem like exercise
% and optionally use an "answer" environment to append the answer to
% the file \jobname.ans, which will be included in an appendix.
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
\RequirePackage{color,verbatim,theorem}
\definecolor{@gray}{gray}{.80}
% This code is originally from color.sty. It is modified to allow for
% use in environments.
\long\def\Begin@colpara{%
  \par\noindent\setbox\z@\vbox\bgroup\kern\fboxsep\hbox\bgroup\kern\fboxsep%
  \vtop\bgroup\hsize=\linewidth\advance\hsize-2\fboxsep}

\def\End@colpara#1{%
 \egroup\kern\fboxsep\egroup\kern\fboxsep\egroup%
 \ifgray{\@declaredcolor{#1}\color@block{\wd\z@}{\ht\z@}{\dp\z@}}\fi%
 \box\z@\par}

% This stuff uses the enhanced theorem style
\theoremstyle{break}
\theorembodyfont{\upshape}
\newtheorem{ex@theorem}{Övning}[chapter]
\setlength{\theorempreskipamount}{0pt}
\setlength{\theorempostskipamount}{0.2ex}
\newenvironment{exercise}{%
  \Begin@colpara%
  \begin{ex@theorem}%
}{%
  \end{ex@theorem}%
  \End@colpara{@gray}%
  \vspace{-1ex}%
}

\newwrite\verbatim@out
\immediate\openout\verbatim@out\jobname.ans
\edef\@tempa{\immediate\write\verbatim@out{\string\begin{enumerate}}}\@tempa

\newenvironment{answer}{%
  \@bsphack%
  \edef\@tempa{\immediate\write\verbatim@out{%
      \string\begin{printanswer}{\theex@theorem}}}\@tempa%
  \let\do\@makeother\dospecials\catcode`\^^M\active%
  \def\verbatim@processline{\immediate\write\verbatim@out{\the\verbatim@line}}%
  \verbatim@start%
}{%
  \edef\@tempa{\immediate\write\verbatim@out{\string\end{printanswer}}}\@tempa%
  \@esphack
}

\newenvironment{printanswer}[1]{\item[\textbf{#1}]}{}

\newcommand{\answers}{
  \edef\@tempa{\immediate\write\verbatim@out{\string\end{enumerate}}}\@tempa
  \immediate\closeout\verbatim@out%
  \chapter{Lösningar till övningsuppgifterna}%
  \input{\jobname.ans}}

%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
% Index macros
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
\newcommand{\rmindex}[1]{#1\index{#1}}
\newcommand{\emindex}[1]{\emph{#1}\index{#1}}
\newcommand{\ttindex}[1]{\texttt{#1}\index{#1@\texttt{#1}}}
\newcommand{\hidettindex}[1]{\index{#1@\texttt{#1}}}

\def\seename{se}


%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
% Use multicols to print index in multiple columns.
% Heavily inspired from the doc package.
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
\RequirePackage{multicol}
\renewenvironment{theindex}
  {\begin{multicols}{4}[\index@prologue]%
    \IndexParms \let\item\@idxitem \ignorespaces}%
  {\end{multicols}}

\long\def\IndexPrologue#1{\@bsphack\def\index@prologue{#1}\@esphack}
\def\index@prologue{\chapter*{\indexname}%
  \addcontentsline{toc}{chapter}{\indexname}%
  \markboth{\indexname}{\indexname}%
}
\def\IndexParms{%
  \parindent \z@
  \columnsep 15pt
  \setlength{\columnseprule}{\my@colseprule}
  \parskip 0pt plus 1pt
  \rightskip 15pt
  \mathsurround \z@
  \parfillskip=-15pt
  \small
  \def\@idxitem{\par\hangindent 30pt}%
  \def\subitem{\@idxitem\hspace*{15pt}}%
  \def\subsubitem{\@idxitem\hspace*{25pt}}%
  \def\indexspace{\par\vspace{10pt plus 2pt minus 3pt}}%
  \def\efill{\hfill\nopagebreak}%
  \def\dotfill{\leaders\hbox to.6em{\hss .\hss}\hskip\z@ plus  1fill}%
  \def\dotfil{\leaders\hbox to.6em{\hss .\hss}\hfil}%
  \def\pfill{\unskip~\dotfill\penalty500\strut\nobreak
    \dotfil~\ignorespaces}%
}

%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
% Misc
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%

%Used for filenames in directory graphs
\newcommand{\ST}[1]{\texttt{\small #1}}

% Description and itemize with different measurements.
\renewenvironment{description}{%
  \list{}{\labelwidth=16mm\leftmargin=20mm\partopsep=0pt\parskip=0pt%
    \parsep=0pt\itemsep=0pt\topsep=5pt\let\makelabel\descriptionlabel}}
{\endlist}
\renewcommand\descriptionlabel[1]{\hspace\labelsep
                                \normalfont\bfseries #1\hfill}
\newenvironment{Xdescription}{%
  \list{}{\labelwidth=5mm\leftmargin=8mm\partopsep=0pt\parskip=0pt%
    \parsep=0pt\itemsep=0pt\topsep=5pt\let\makelabel\descriptionlabel}}
{\endlist}
\newcommand\Xdescriptionlabel[1]{\hspace\labelsep
                                \normalfont\bfseries #1\hfill}
\newenvironment{refdescription}{%
  \list{}{\labelwidth=26mm\leftmargin=26mm\partopsep=0pt\parskip=0pt%
    \parsep=0pt\itemsep=0pt\topsep=5pt\let\makelabel\refdescriptionlabel}}
{\endlist}
\newcommand\refdescriptionlabel[1]{\hspace\labelsep
                                \normalfont #1\hfill}
\renewenvironment{itemize}{%
  \list{$\bullet$}{\labelwidth=2mm\leftmargin=7mm\partopsep=0pt\parskip=0pt%
    \parsep=0pt\itemsep=0pt\topsep=5pt}}
{\endlist}
% Similar to quote but uses small tt font and has less surrounding space
\newenvironment{ttquote}{%
  \list{}{\leftmargin=5mm\partopsep=0pt\parskip=0pt\parsep=0pt%
    \itemsep=0pt\topsep=5pt}\item[]\ttfamily\small}
{\endlist\vspace{-3pt}}

\newcommand{\Sp}{\ifhmode\hspace{.3em}\fi} % Don't add space to beg of paragr.

\newcommand{\Ctrl}[1]{$\langle$\textrm{\textsc{control-#1}}$\rangle$}
\newcommand{\Tab}[0]{$\langle$\textrm{\textsc{\scriptsize TAB}}$\rangle$}

\newcommand{\Prog}{\@ifstar\@oprog\@prog}
\newcommand{\@prog}[1]{\Sp\texttt{#1}\Sp}
\newcommand{\@oprog}[1]{\Sp$[$\texttt{#1}$]$\Sp}

\newcommand{\Arg}{\@ifstar\@oarg\@arg}
\newcommand{\@arg}[2][]{\texttt{#1}\@@rg{#2}\Sp}
\newcommand{\@oarg}[2][]{$[$\texttt{#1}\@@rg{#2}$]$\Sp}
\newcommand{\@@rg}[1]{$\langle$\textit{#1}$\rangle$}

\newcommand{\Marg}[1]{\@@rg{#1}...\Sp}

\RequirePackage{alltt,fancybox}
\cornersize*{10pt}
\newlength{\my@len}
\newenvironment{example}{%
  \par
  \setlength{\my@len}{\linewidth}%
  \addtolength{\my@len}{-2\fboxsep}%
  \addtolength{\my@len}{-2\fboxrule}%
  \begin{Sbox}%
    \begin{minipage}{\my@len}%
      \small%
      \begin{alltt}%
}{%
      \end{alltt}%
    \end{minipage}%
  \end{Sbox}%
  \ovalbox{\TheSbox}%
  \par
}