/usr/share/texlive/texmf-dist/tex/generic/fenixpar/fenixtok.sty is in texlive-generic-extra 2013.20140215-2.
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1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 | % fenixtok.sty Version 0.92, 18th November, 2011
%
% (c) Javier A. M\'ugica, 2007 2011
% License: LPPL version 1.3
%
% LPPL maintenance status: maintained
% Current Maintainer: Javier A. M\'ugica
%
% For bug reports and comments:
%
% Javier M\'ugica, javier at digi21.net
%
% Description:
%
% This file provides a few user macros to add material to a token register (typically \everypar)
% to be automatically removed when the token list is executed or later on request,
% without interfering with existing material in that register.
% Supose for example that you want the code \hbox to0pt{\kern-20pt$\ast$\hss} to be
% executed by the next \everypar. Then you would type
% \fornexttokl{everypar}{\hbox to0pt{\kern-20pt$\ast$\hss}}.
% \fornexttokl adds the material as a stack: last added, first executed.
% If you want to add material to be executed after whatever may be on the register,
% use \fornexttokr instead.
% If you need \fornexttok often (or even twice) you may _define_ that type of everypar:
%
% \NewTypeoftok{everypar}{asterisk}{\hbox to0pt{\kern-20pt$\ast$\hss}}
%
% And later you would type \NexteveryparL{asterisk} (or \NexteveryparR).
% If you want several consecutive paragraphs to be signaled with the asterisk
% you may enclose them between \AlleveryparsL{asterisk} (or ...R) and \Endeverypars{asterisk}.
%
% For any token register 'mytok' you can use \nextmytokl (...r) as an abreviation for
% \fornexttokl{mytok} (...r), but it will fail if you have not yet used \NewTypeoftok{mytok}
% or \fornexttok{mytok}.
%
% The commands \All... and \End..., can be mixed in any order; in particular, they don't need
% to be nested. They may also be mixed in any way with respect to \Next.. or \fornext...
%
\chardef\atcatcode=\catcode`\@
\catcode`\@=11\relax
\def\exp@noex{\expandafter\noexpand}
\def\noexp@name#1{\exp@noex\csname#1\endcsname}
\def\tok@newtoks{\csname newtoks\endcsname}% \newtoks not allowed in definitios
\def\@namedef#1{\expandafter\def\csname#1\endcsname}% This is LaTeX definition
\long\def\@gobbletwo#1#2{}% So is this one.
%Almost everything is done by this macro. See the example below.
\def\NewTypeoftok#1#2#3{%
\toktype@Registerifnotyet{#1}%
\expandafter\tok@newtoks\csname #1/#2\endcsname
\csname #1/#2\endcsname{#3}%
\@namedef{next@#1/#2}{%
\edef\tok@type{\csname #1\endcsname}% We need it very often
\edef\if@nextrequired{\noexp@name{if@next#1@required}}%Idem
\def\make@ifnextrequired@false{\let\exp@noex\if@nextrequired\noexpand\iffalse}%
\edef\tempa{\csname previous@#1@\endcsname\tok@type}\tempa
\if@nextrequired\else
\edef\tempa{\csname former@#1@\endcsname\tok@type}\tempa
\fi
\edef\tempa{\tok@type{\if\foo L\expandafter\the\csname #1/#2\endcsname\fi
\if@nextrequired\else\tok@type\csname former@#1@\endcsname\fi\make@ifnextrequired@false% the \fi should be after \make@..., but if another macro (@startsection, for instance) changes everypar before it is executed, or builds the paragraph inside a group and later outside the group changes it, we would never recover.
\expandafter\the\csname previous@#1@\endcsname
\if\foo R\expandafter\the\csname #1/#2\endcsname\fi}}%
\tempa
\expandafter\let\if@nextrequired\iftrue
}%
\expandafter\edef\csname the@#1/#2\endcsname{\expandafter\the\csname #1/#2\endcsname}%
\@namedef{every@#1/#2}{%
\def\tempb####1{\edef\tempa{\csname####1\endcsname{\if\foo L\noexp@name{the@#1/#2}\fi\expandafter\the\csname####1\endcsname\if\foo R\noexp@name{the@#1/#2}\fi}}}%
\tempb{#1}\tempa
%Also add it to the saved \former... if necesary:
\csname if@next#1@required\endcsname
\tempb{former@#1@}\tempa
\fi
}%
\@namedef{end@#1/#2}{%
\edef\tempa{\noexpand\see@if@present\noexp@name{#1}\noexp@name{the@#1/#2}}\tempa
\if@tok@present
\def\tempb####1{\edef\tempa{\csname ####1\endcsname\noexpand\expandafter\noexp@name{strip@#1/#2}\noexpand\the\csname####1\endcsname}%
\expandafter\expandafter\tempa\mark@end@fenixtok}%
\tempb{#1}%
%Remove it from \former... if necesary:
\iftrue
\csname if@next#1@required\endcsname
\tempb{former@#1@}%
\fi
\csname fi\endcsname
\else
\newlinechar=`^^J%
\edef\tempa{\noexpand\errhelp{Probably another macro redefined \noexp@name{#1} behind the scenes.^^J%
Simply proceed and remember to check if the effect of {#2}^^J%
is missing from some prior point up to here.}}%
\tempa
\errmessage{The material of {#2} has already been removed from \noexp@name{#1}.^^J%
I will ignore End#1s{#2}}%
\errhelp{}%
\fi
}%
\edef\tempa{\noexp@name{strip@#1/#2}####1\noexp@name{the@#1/#2}}%
\expandafter\def\tempa##2\mark@end@fenixtok{{##1##2}}%
}
%This one must receive the \xxx already built, for if not the definition would be (more) cumbersome.
\def\see@if@present#1#2{%
\def\save@first@part ##1#2##2\mark@end@fenixtok{\toks0{##1}}%
\expandafter\save@first@part\the#1#2\mark@end@fenixtok\edef\tempa{\the\toks0}\edef\tempb{\the#1}%
\expandafter\let\expandafter\if@tok@present\csname\ifx\tempa\tempb iffalse\else iftrue\fi\endcsname \toks0{}%
}
\let\tempb\fi \let\tempc\iffalse
\catcode`f=12 \catcode`s=12 %
\tempc
%If #1 is {mytok} and #2 is {foo}, the previous unexcrutable \csname's and \edef's
%will result arfter expansion of \NewTypeoftok in something like
\toktype@Registerifnotyet{mytok}%
\newtoks\mytok/foo
\mytok/foo{#3}%
\def\next@mytok/foo{%
% The two auxiliary %\def\tok@type{\mytok}
% edef lines %\def\if@nextrequired{\if@nextmytok@required}
% Another auxiliary line, for easier reading of the edef where it apears
% \def\make@ifnextrequired@false{\let\exp@noex\if@nextrequired\noexpand\iffalse}
\previous@mytok@\mytok
\if@nextmytok@required\else
\former@mytok@\mytok
\fi
\edef\tempa{\mytok{\if\foo L\the\mytok/foo\fi %The first \foo is real
\if@nextmytok@required\else\mytok\former@mytok@\let\noexpand\if@nextmytok@required\noexpand\iffalse\fi
\the\previous@mytok@
\if\foo R\the\mytok/foo\fi
}}%
\tempa
\let\if@nextmytok@required\iftrue
}%
\edef\the@mytok/foo{\the\mytok/foo}%
\def\every@mytok/foo{%
%Axuliary definition of \tempb in order to edefine \tempa, not shown.
\edef\tempa{\mytok{\if\foo L\noexpand\the@mytok@foo\fi \the\mytok \if\foo L\noexpand\the@mytok@foo\fi}}%
\tempa
\if@nextmytok@required
%Same definition as above with \former@mytok@ istead of \mytok
\tempa
\fi
}%
\def\end@mytok/foo{%
%Axuliary definition of \tempb not shown
%Only shown the case where \if@tok@present is true
\def\tempa{\mytok\expandafter\strip@mytok/foo \the\mytok}%
\expandafter\mytok\expandafter\strip@mytok/foo\the\mytok\mark@end@fenixtok
\if@nextmytok@required
\def\tempa{\expandafter\strip@mytok/foo \noexpand\the\mytok}%
\expandafter\former@mytok@\expandafter\strip@mytok/foo\the\former@mytok@\mark@end@fenixtok
\fi
}%
\def\tempa{\strip@mytok/foo ####1\the@mytok/foo}%
\def\strip@mytok/foo##1\the@mytok/foo##2\mark@end@fenixtok{\mytok{##1##2}}%
\fi
%end of example
\tempb
\catcode`f=11 \catcode`s=11 %
\let\fi\tempb \let\iffalse\tempc
\let\tempb\relax \let\tempc\relax
%Now the Register macros
\def\toktype@Registerifnotyet#1{%
\ifcsname if@next#1@required\endcsname
\def\next{}%
\else\def\next{\toktype@Register{#1}}%
\fi
\next
}
\def\toktype@Register#1{%
\expandafter\tok@newtoks\csname former@#1@\endcsname
\expandafter\tok@newtoks\csname previous@#1@\endcsname
\expandafter\global\expandafter\let\csname if@next#1@required\endcsname\iffalse
%
\@namedef{Next#1L}##1{\def\foo{L}\csname next@#1/##1\endcsname}% If you think
\@namedef{Next#1R}##1{\def\foo{R}\csname next@#1/##1\endcsname}%
\@namedef{All#1sL}##1{\def\foo{L}\csname every@#1/##1\endcsname}% these should not be user level,
\@namedef{All#1sR}##1{\def\foo{R}\csname every@#1/##1\endcsname}% these should not be user level,
\@namedef{End#1s}##1{\csname end@#1/##1\endcsname}% just insert an @
%
\NewTypeoftok{#1}{@scratch@}{}%
\@namedef{next#1l}##1{\csname #1/@scratch@\endcsname{##1}\csname Next#1L\endcsname{@scratch@}}% inside the argument
\@namedef{next#1r}##1{\csname #1/@scratch@\endcsname{##1}\csname Next#1R\endcsname{@scratch@}}% to the @namedef's
}
\def\fornexttokl#1#2{%
\toktype@Registerifnotyet{#1}%
\csname next#1l\endcsname{#2}% Also here.
}
\def\fornexttokr#1#2{%
\toktype@Registerifnotyet{#1}%
\csname next#1r\endcsname{#2}% and here.
}
\catcode`@=\atcatcode
\let\atcatcode\relax
\endinput
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