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+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+% CAP --- Macros for typesetting programs in C and Pascal %
+% Micha\l{} Gulczy\'nski, Szczecin, Feb 1997 / Feb 1998 %
+% mgulcz@we.tuniv.szczecin.pl %
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+%
+% version 1.2
+% This file contains common definitions used in the CAP package.
+% It does not contain any useful macros itself.
+%
+
+
+%
+% macro that compares two strings
+%
+\def\@Identical#1#2{%
+ MG\fi
+ \edef\@FirstString{#1}%
+ \edef\@SecondString{#2}%
+ \ifx \@FirstString \@SecondString
+}
+%
+% font declarations
+%
+{% a tiny trick that lets TeX check if the user has PL fonts...
+ \catcode`\p = 12
+ \catcode`\l = 12
+ \catcode`\r = 12
+ \xdef\xxx{plr10}
+}
+\if\@Identical{\xxx}{\fontname\tenrm}
+ \font\tenttsl = plsltt10
+ \font\tenttit = plitt10
+\else
+ \font\tenttsl = cmsltt10
+ \font\tenttit = cmitt10
+\fi
+\let\IdentifierFont = \it
+\let\TextFont = \sl
+\let\KeywordFont = \bf
+\let\CommentFont = \tenttit
+\let\DirectiveFont = \tenttsl
+\let\SymbolFont = \tt
+\let\SpecialFont = \tt % some characters: { } < > _ \ and | are very
+ % special -- they exist only in tt fonts
+%
+% registers and constants used in the program
+%
+\newif\if@TempBool % temporary boolean
+\newread\@InFile % file read by \Insert macros
+\newcount\@CharCode % code of current character
+\newcount\@PrevChar % code of previous charater
+\newcount\@WhereAmI % one of the following values:
+\chardef\@NothingSpecial = 0
+\chardef\@Text = 1
+\chardef\@Directive = 2 % used only in C
+\chardef\@ShortComment = 3 % C: //... ; Pascal: (* ... *)
+\chardef\@LongComment = 4 % C: /* ... */; Pascal: { ... }
+%
+% I need a "not eof" function
+%
+\def\neof#1{%
+ MG\fi
+ \ifeof#1
+ \@TempBoolfalse
+ \else
+ \@TempBooltrue
+ \fi
+ \if@TempBool
+}
+%
+% macro for changing catcodes of some special characters
+%
+\def\@TurnSpecialCharsOff{%
+ \catcode`\/=12
+ \catcode`\~=12
+ \catcode`\#=12
+ \catcode`\$=12
+ \catcode`\%=12
+ \catcode`\^=12
+ \catcode`\&=12
+ \catcode`\_=12
+ \catcode`\\=12
+ \catcode`\{=12
+ \catcode`\}=12
+ \catcode`\ =12
+ \catcode`\^^M=12
+}
+%
+% macro that initiates all the variables
+%
+\def\@PrepareCPas{%
+ \begingroup
+ \parindent=0pt
+ \rightskip=0pt plus 1fil
+ \@TurnSpecialCharsOff
+ \def\@Word{}%
+ \@WhereAmI = \@NothingSpecial
+ \@PrevChar = 32
+ \SymbolFont
+}
+%
+% macro that outputs the char specified as the argument;
+% characters < > _ \ { | } are written with \SpecialFont
+%
+\def\@WriteChar#1{%
+ \def\@Check##1{%
+ \ifnum `#1=`##1
+ {\SpecialFont #1}%
+ \@TempBooltrue
+ \fi
+ }%
+ \@TempBoolfalse
+ \@Check{<}%
+ \@Check{>}%
+ \@Check{_}%
+ \@Check{\\}%
+ \@Check{\{}%
+ \@Check{\}}%
+ \@Check{|}%
+ \if@TempBool
+ \else
+ \ifnum `#1=13
+ \par\leavevmode
+ \else
+ \ifnum `#1=32
+ \hskip 1ex
+ \else
+ #1%
+ \fi
+ \fi
+ \fi
+}
+%
+% checks if word #1 is a keyword and writes it out;
+% #2 is a list of keywords separated with spaces
+%
+\def\@WriteWord#1#2{%
+ \if\@OnListOfKeywords{ #1 }{#2}%
+ {\KeywordFont #1}%
+ \else
+ {\IdentifierFont #1}%
+ \fi
+}
+%
+% checks if string #2 contains string #1
+%
+\def\@OnListOfKeywords#1#2{%
+ MG\fi
+ \edef\@ExpandedArgument{{#1}}%
+ \expandafter\@@OnListOfKeywords\@ExpandedArgument{#2}\relax
+}
+\def\@@OnListOfKeywords#1#2{%
+ \def\@CheckList##1#1##2\@EndOfList{%
+ \if\@Identical{##2}{}%
+ \@TempBoolfalse
+ \else
+ \@TempBooltrue
+ \fi
+ }%
+ \expandafter\@CheckList#2#1\@EndOfList\relax
+ \if@TempBool
+}
+%
+% checks if the specified character is a digit or a letter
+%
+\def\@DigitLetter#1{%
+ MG\fi
+ \@TempBoolfalse
+ \ifnum `\` < #1\relax % small letter?
+ \ifnum `\{ > #1\relax
+ \@TempBooltrue
+ \fi
+ \fi
+ \ifnum `\@ < #1\relax % capital letter?
+ \ifnum `\[ > #1\relax
+ \@TempBooltrue
+ \fi
+ \fi
+ \ifnum `\/ < #1\relax % digit?
+ \ifnum `\: > #1\relax
+ \@TempBooltrue
+ \fi
+ \fi
+ \if@TempBool
+}
+
+\endinput