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diff --git a/2004/netfilter-failover-ols2004/OLS2004-proceedings/TEMPLATES/csty.sty b/2004/netfilter-failover-ols2004/OLS2004-proceedings/TEMPLATES/csty.sty new file mode 100644 index 0000000..54dff9c --- /dev/null +++ b/2004/netfilter-failover-ols2004/OLS2004-proceedings/TEMPLATES/csty.sty @@ -0,0 +1,250 @@ +% This is CSTY.STY as received by email at december 1990 +% +% The cprog macros allow programs in C, C++, Pascal, and Modula-2 to be +% included directly into TeX documents. Program text is set in a Roman +% font, comments in slanted, and strings in typewriter. Operators such as +% <= are optionally combined into single symbols like $\le$. Keywords are +% *not* emphasised---I find this ugly and distracting. (By purest +% coincidence it would also be very hard to do.) +% +% These macros can be \input in plain TeX or used as a style file in LaTeX. +% They provide a convenient alternative to tgrind, particularly for program +% fragments embedded in documents. Full instructions for use appear in the +% macro package itself. +% +% +% \'Eamonn McManus <emcmanus@cs.tcd.ie> <emcmanus%cs.tcd.ie@cunyvm.cuny.edu> +% +% ASCII: !"#$%&'()*+,-./09:;<=>?@AZ[\]^_`az{|}~ +% + +% BEGIN: cprog.tex (or cprog.sty) - formatting of C programs +% By \'Eamonn McManus <emcmanus@cs.tcd.ie>. This file is not copyrighted. +% $Id: cprog.tex,v 1.4 90/09/12 23:21:26 emcmanus Exp $ + +% This allows C programs to be formatted directly by TeX. It can be +% invoked by \cprogfile{filename} or (in LaTeX) \begin{cprog} ... +% \end{cprog} or (in plain TeX) \cprog ... \end{cprog}. In LaTeX, the +% alternative form \begin{cprog*} is allowed, where spaces in C strings +% are printed using the `square u' character (like LaTeX {verbatim*}). +% In plain TeX, you have to use \csname cprog*\endcsname for this (sorry). +% If you are using \cprogfile, say \cprogttspacetrue beforehand if you +% want this effect. + +% The formatting is (necessarily) simple. C text is set in a normal Roman +% font, comments in a slanted font, and strings in a typewriter font, with +% spaces optionally made visible as the `square u' symbol. Tabs are +% expanded to four spaces (this does not look good when comments are +% aligned to the right of program text). Some pairs of input characters +% appear as single output characters: << <= >> >= != -> are respectively +% TeX's \ll \le \gg \ge \ne \rightarrow. Say \cprogpairsfalse to disable +% this. + +% You can escape to TeX within cprog text by defining an escape character. +% The character @ is suitable for C and Pascal. I have not tested other +% characters so they may interact badly with their existing definitions here. +% To define @ as the escape character, do \cprogescape@. Then within text +% you can do @ followed by TeX commands. These commands will be in a TeX +% group with the \catcodes of \{}% as normal. The commands are terminated +% by a newline, which is not considered part of the program text. + +% The fonts below can be changed to alter the setting of the various parts +% of the program. The \cprogbaselineskip parameter can be altered to +% change the line spacing. LaTeX's \baselinestretch is taken into account +% too. The indentation applied to the whole program is \cprogindent, +% initially 0. Before and after the program there are skips of +% \beforecprogskip and \aftercprogskip; the default values are \parskip +% and 0 respectively (since there will often be a \parskip after the +% program anyway). + +% If the source text is Pascal or Modula-2, say \pascaltrue or \modulatrue +% (respectively) before formatting it. This makes (* *) be recognised for +% comments instead of /* */. Braces {} are also recognised for Pascal. +% \pascalfalse or \modulafalse as appropriate restores the default of C. + +% This package works by making a large number of characters active. Since +% even spaces are active, it is possible to examine the next character in +% a macro by making it a parameter, rather than using \futurelet as one +% would normally do. This is more convenient, but the coding does mean +% that if the next character itself wants to examine a character it may +% look at a token from the macro rather than the input text. I think that +% all cases that occur in practice have been looked after. + +% The macros could still do with some work. For example, the big macro +% defined with [] taking the place of {} could be recoded to use {} and so +% be more legible. The internal macros etc should have @ in their names, +% and should be checked against LaTeX macros for clashes. + +% Allow multiple inclusion to go faster. + +\ifx\undefined\cprogsetup % The whole file. + +% Define the fonts used for program text, comments, and strings. +% Note that if \it is used for \ccommentfont, something will need to +% be done about $ signs, which come out as pounds sterling. +\let\ctextfont=\tt \let\ccommentfont=\sl \let\cstringfont=\tt + +% Parameters. Unfortunately \newdimen is \outer (\outerness is a mistake) +% so we need a subterfuge in case we are skipping the file. +\csname newdimen\endcsname\cprogbaselineskip \cprogbaselineskip=\baselineskip +\csname newdimen\endcsname\cprogindent \cprogindent=0pt +\csname newdimen\endcsname\cprogwidth % Gets default=\hsize when cprog invoked. +\csname newskip\endcsname\beforecprogskip \beforecprogskip=\parskip +\csname newskip\endcsname\aftercprogskip \aftercprogskip=0pt +\csname newif\endcsname\ifcprogttspace +\csname newif\endcsname\ifcprogpairs \cprogpairstrue +\csname newif\endcsname\ifpascal +\csname newif\endcsname\ifmodula % Same as Pascal but no {comments}. +{\def\junk{\fi\fi\fi\fi}} % If skipping. + +\let\cprogesc\relax +\begingroup \catcode`~=\active +\gdef\cprogescape#1{% + {\catcode`~=\active \uccode`~=`#1 \aftergroup\cprogescont + \uppercase{\aftergroup~}}} +\gdef\cprogescont#1{% + \def\cprogesc{% + \makeactive#1\def#1{% + \begingroup \catcode`\\0 \catcode`{1 \catcode`}2 \catcode`\%14 + \catcode` 10 \clinegroup{}}}} +\endgroup + +\def\makeactive#1{\catcode`#1=\active} \def\makeother#1{\catcode`#1=12} +{\obeyspaces\gdef\activespace{ } \obeylines\gdef\activecr{^^M}} +{\catcode`|=\catcode`\\ \makeactive\\ |gdef|activebackslash{\}} +{\catcode9=\active \gdef\activetab{^^I}} + +% The following group makes many characters active, so that their catcodes +% in the \cprogchars macro are active, allowing them to be defined. We +% could alternatively define more stuff like \activebackslash and use +% \expandafter or (carefully) \edef to expand these in the macro. +\begingroup +\catcode`[=\catcode`{ \catcode`]=\catcode`} +\makeactive! \makeactive" \makeactive' \makeactive( \makeactive* \makeactive- +\makeactive/ \makeactive< \makeactive> \makeactive? \makeactive^ \makeactive_ +\makeactive\{ \makeactive| \makeactive\} +\gdef\activestar[*] +\gdef\cprogchars[% + \makeother##\makeother$\makeother&\makeother\%\makeother^% + \makeactive"\makeactive'\makeactive*\makeactive?\makeactive{\makeactive}% + \makeactive}\makeactive\\\makeactive_\expandafter\makeactive\activetab% + \makeactive!\makeactive<\makeactive>\makeactive-\makeactive|% + \ifcprogpairs + \def!##1[\ifx=##1$\ne$\else\string!\null##1\fi]% + \def-##1[\ifx>##1$\rightarrow$\else$\string-$##1\fi]% + % We use \aftergroup in < and > to deal with the fact that #1 might + % itself examine the following character. + \def<##1[[$\ifx<##1\ll$\else\ifx=##1\le$\else + \ifx>##1\ifpascal\ne$\else\string<$\aftergroup>\fi + \else \string<$\aftergroup##1\fi\fi\fi]]% + \def>##1[[$\ifx>##1\gg$\else\ifx=##1\ge$\else + \string>$\aftergroup##1\fi\fi]]% + \else \def![\string!\null]% Avoid !` ligature. + \def-[$\string-$]\def<[$\string<$]\def>[$\string>$]% + \fi + \def?[\string?\null]% Avoid ?` ligature. + \def"[\cquote"[\tt\string"]]\def'[\cquote'[\tt\ttquote]]\def*[$\string*$]% + \ifmodula \pascaltrue \fi % Except that {...} is used for sets. + \ifpascal + \ifmodula \dulllbrace \else + \def{[\begingroup \dulllbrace{\ccommentsetup\def}[\/\endgroup }]]% + \fi \makeactive(\let(=\pascalcomment \makeactive^\def^[$\uparrow$]% + \else \dulllbrace\makeactive/\let/=\ccomment + \fi + \def}[$\}$]\def|[$\string|$]\def~[$\sim$]\let_\_% + \expandafter\def\activebackslash[$\backslash$]% + \obeyspaces \expandafter\def\activespace[\leavevmode\space]% + \expandafter\def\activetab[\ \ \ \ ]% + \obeylines \expandafter\def\activecr[\strut\par]] +\gdef\cprogarg[\expandafter\def\activebackslash##1[\ifx##1e\let\next\cprogend + \else$\backslash$\let\next##1\fi\next]\eatcr] +\gdef\cprogend nd#1{cprog#2}[\endcprogarg] % #1 can be space, #2 *. +\gdef\dulllbrace[\def{[$\{$]] +\endgroup + +\chardef\ttquote=13 % Undirected single quote. +\begingroup \makeactive" \makeactive' \makeactive! +\gdef\cquote#1#2{% #1 is the quote, " or ', #2 how to set it. + \begingroup #2\cstringfont \makeactive\\% + \ifpascal \makeother\\\makeother^% + \else \expandafter\let\activebackslash\quotebackslash + \fi + \expandafter\edef\activespace{\ifcprogttspace\char`\ \else\ \fi}% + \expandafter\let\activecr=\unclosedstring + \def!{\string!\null}% No !` ligature. + \makeother*\makeother-\makeother/\makeother<\makeother>% + \makeother_\makeother\{\makeother\}\makeother|\makeother~% + \ifx"#1\let'\ttquote \else \makeother"\fi + \def#1{#2\endgroup}} +\endgroup +\csname newhelp\endcsname\cprogunclosedstr{% +A string or character constant earlier in the line was unclosed.^^JSo +I'm closing it now.} +\def\unclosedstring{% + \escapechar-1% + \errhelp\cprogunclosedstr + \errmessage{Unclosed string}% + \endgroup} +\newlinechar=`^^J +\def\quotebackslash#1{\char`\\% + \expandafter\ifx\activecr#1\strut\par + \else\if'\noexpand#1\ttquote\else\string#1\fi\fi} + +% In a comment, we shrink the width of the opening / to that of a space so +% that the stars in multiline comments will line up. We also shrink the +% closing * for symmetry, but not in Pascal where it looks nasty. +% Note that \end{cprog} is not recognised in strings or comments. +\def\spacebox#1{\leavevmode \hbox to \spaceskip{#1\hss}} + +\begingroup \makeactive* \makeactive! \makeother/ +\gdef\ccommentsetup{\ccommentfont \makeother-\makeother'\makeother"\makeother/% + \def!{\string!\null}\expandafter\def\activebackslash{$\backslash$}} +\gdef\ccomment#1{% + \let\next\relax + \ifx#1*\bgroup \ccommentsetup + \spacebox{\ctextfont\string/}*% + \makeactive*\def*{\commentstar/}% + \else\if\noexpand#1/\begingroup //\ccommentsetup \clinegroup\activecr + \else \string/\let\next#1% + \fi\fi\next} +\gdef\pascalcomment#1{% + \ifx#1*\bgroup \ccommentsetup \let\next\dulllbrace \makeother(% + \spacebox{\ctextfont\string(}*\makeactive*\def*{\commentstar)}% + \else (\let\next#1\fi \next} +\obeylines \long\gdef\clinegroup#1#2^^M{#2\endgroup#1}% +\endgroup +\def\commentstar#1#2{% + {\if#1\noexpand#2\egroup \ifpascal\else\aftergroup\spacebox\fi\fi}{$*$}#2} + +% We usually have an active ^^M after \cprog or \begin{cprog}. +\def\eatcr#1{{\expandafter\ifx\activecr#1\else\aftergroup#1\fi}} + +% Expand to stretch and shrink (plus and minus) of parameter #1. +\def\stretchshrink#1{\expandafter\eatdimenpart\the#1 \end} +\def\eatdimenpart#1 #2\end{#2} + +\ifx\undefined\baselinestretch \def\baselinestretch{1}\fi + +\def\cprogsetup{\ctextfont \cprogchars \parskip=0pt\stretchshrink\parskip + \ifdim \cprogwidth=0pt \else \hsize\cprogwidth \fi + \cprogesc \spaceskip\fontdimen2\font \xspaceskip\spaceskip + \baselineskip=\baselinestretch\cprogbaselineskip \parindent=\cprogindent + \vskip\beforecprogskip} +\def\endcprog{\endgroup \vskip\aftercprogskip} +\def\cprogfile#1{\begingroup \cprogsetup \input#1\endcprog} +\def\cprog{\begingroup \cprogttspacefalse \cprogsetup \cprogarg} +% Like {verbatim*}, {cprog*} uses `square u' for spaces in quoted strings. +\expandafter\def\csname cprog*\endcsname{% + \begingroup \cprogttspacetrue \cprogsetup \cprogarg} +\expandafter\let\csname endcprog*\endcsname=\endcprog +% In LaTeX we need to call \end{cprog} properly to close the environment, +% whereas in plain TeX this will end the job. The test for LaTeX is not +% bulletproof, but most plain TeX documents don't refer to the LaTeX logo. +\ifx\undefined\LaTeX \let\endcprogarg=\endcprog +\else \def\endcprogarg{\ifcprogttspace\end{cprog*}\else\end{cprog}\fi} +\fi + +\fi % \ifx\undefined\cprogsetup + +\endinput + |