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%D \module
%D [ file=verb-tex,
%D version=1997.12.22,
%D title=\CONTEXT\ Verbatim Macros,
%D subtitle=Pretty \TEX\ verbatim,
%D author=Hans Hagen,
%D date=\currentdate,
%D copyright={PRAGMA / Hans Hagen \& Ton Otten}]
%C
%C This module is part of the \CONTEXT\ macro||package and is
%C therefore copyrighted by \PRAGMA. See mreadme.pdf for
%C details.
\writestatus{loading}{ConTeXt Verbatim Macros / Pretty TEX Verbatim}
%D The original module \type{supp-ver} had the \TEX\
%D interpreter built in. The current implementation is more
%D natural and less complicated.
%D \startTEX
%D \definetyping[niceTEX][option=TEX,paletpalet=graypretty]
%D
%D \startniceTEX
%D \message{A vivid look at TeX}
%D \stopniceTEX
%D \stopTEX
\unprotect
%D \macros
%D {ifsplitTEXparameters}
%D
%D The mechanism described here, is meant to be used with
%D color. It is nevertheless possible to use different fonts
%D instead of distinctive colors. When using color, it's better
%D to end parameter mode after the \type{#}. When on the
%D other hand we use a slanted typeface for the hashmark, then
%D a slanted number looks better.
\doglobal\newif\ifsplitTEXparameters \global\splitTEXparameterstrue
%D \macros
%D {ifsplitTEXcontrols}
%D
%D With \type{\splittexcontrols} we can influence the way
%D control characters are processed in macro names. By default,
%D the \type{^^} part is uncolored. When this boolean is set to
%D false, they get the same color as the other characters.
\doglobal\newif\ifsplitTEXcontrols \global\splitTEXcontrolstrue
%D The next boolean is used for internal purposes only and
%D keeps track of the length of the name. Because two||character
%D sequences starting with a backslash are always seen as a
%D command.
\doglobal\newif\iffirstinTEXcommand
%D We use a maximum of four colors because more colors will
%D distract too much. In the following table we show the
%D logical names of the colors, their color and \cap{RGB} values.
%D
%D \placetable{geen}
%D \starttable[|l|l|c|c|c|c|]
%D \HL
%D \FC\bf identifier \MC\bf color \MC\bf r \MC\bf g \MC\bf b \MC\bf bw \LC\SR
%D \HL
%D \FC prettyone \MC red \MC 0.9 \MC 0.0 \MC 0.0 \MC 0.30 \LC\FR
%D \FC prettytwo \MC green \MC 0.0 \MC 0.8 \MC 0.0 \MC 0.45 \LC\MR
%D \FC prettythree \MC yellow \MC 0.0 \MC 0.0 \MC 0.9 \MC 0.60 \LC\MR
%D \FC prettyfour \MC blue \MC 0.8 \MC 0.8 \MC 0.6 \MC 0.75 \LC\LR
%D \HL
%D \stoptable
%D
%D Outside \CONTEXT\ these colors are defined in
%D \type{verb-ini}, in \CONTEXT\ their definitions can be found
%D in \type{core-ver}, where in fact we use the color palet
%D mechanism. That way we can use different schemes i a quite
%D natural way.
\gdef\setupprettyTEXtype
{\def\prettyidentifier{TEX}%
\global\inTEXcommandfalse
\global\firstinTEXcommandfalse
\global\inTEXparameterfalse
\TEXsetcontrols
\TEXsethandlers
\TEXsetspecials}
\gdef\TEXsetcontrols
{\saveprettycontrols
\everyprettyend
{\TEXendofcommand
\TEXendofparameter}%
\def\obeyedspace
{\TEXendofcommand
\TEXendofparameter
\oldobeyedspace}%
\def\flushrestofverbatimline
{\TEXendofcommand
\TEXendofparameter}%
\let\obeytabs=\ignoretabs}
\gdef\TEXsetspecials
{\setpretty`\$=1 \setpretty`\{=1 \setpretty`\}=1
\setpretty`\[=2 \setpretty`\]=2 \setpretty`\(=2 \setpretty`\)=2
\setpretty`\==2 \setpretty`\<=2 \setpretty`\>=2 \setpretty`\"=2
\setpretty`\-=3 \setpretty`\+=3 \setpretty`\/=3
\setpretty`\|=3 \setpretty`\%=3 \setpretty`\'=3 \setpretty`\`=3
\setpretty`\_=3 \setpretty`\&=3 \setpretty`\~=3
\setpretty`\.=4 \setpretty`\,=4 \setpretty`\:=4 \setpretty`\;=4 \setpretty`\*=4
\setpretty`\#=5
\setpretty`\1=6 \setpretty`\2=6 \setpretty`\3=6 \setpretty`\4=6 \setpretty`\5=6
\setpretty`\6=6 \setpretty`\7=6 \setpretty`\8=6 \setpretty`\9=6 \setpretty`\0=6
\setpretty`\\=7
\setpretty`\^=8
\setpretty`\A=9 \setpretty`\B=9 \setpretty`\C=9 \setpretty`\D=9 \setpretty`\E=9
\setpretty`\F=9 \setpretty`\G=9 \setpretty`\H=9 \setpretty`\I=9 \setpretty`\J=9
\setpretty`\K=9 \setpretty`\L=9 \setpretty`\M=9 \setpretty`\N=9 \setpretty`\O=9
\setpretty`\P=9 \setpretty`\Q=9 \setpretty`\R=9 \setpretty`\S=9 \setpretty`\T=9
\setpretty`\U=9 \setpretty`\V=9 \setpretty`\W=9 \setpretty`\X=9 \setpretty`\Y=9
\setpretty`\Z=9
\setpretty`\a=9 \setpretty`\b=9 \setpretty`\c=9 \setpretty`\d=9 \setpretty`\e=9
\setpretty`\f=9 \setpretty`\g=9 \setpretty`\h=9 \setpretty`\i=9 \setpretty`\j=9
\setpretty`\k=9 \setpretty`\l=9 \setpretty`\m=9 \setpretty`\n=9 \setpretty`\o=9
\setpretty`\p=9 \setpretty`\q=9 \setpretty`\r=9 \setpretty`\s=9 \setpretty`\t=9
\setpretty`\u=9 \setpretty`\v=9 \setpretty`\w=9 \setpretty`\x=9 \setpretty`\y=9
\setpretty`\z=9
\setpretty`\?=9 \setpretty`\!=9 \setpretty`\@=9
\setpretty`\%=0 }
\gdef\TEXsethandlers
{\installprettyhandler 1 \TEXtypeone
\installprettyhandler 2 \TEXtypetwo
\installprettyhandler 3 \TEXtypethree
\installprettyhandler 4 \TEXtypefour
\installprettyhandler 5 \TEXtypefive
\installprettyhandler 6 \TEXtypesix
\installprettyhandler 7 \TEXtypeseven
\installprettyhandler 8 \TEXtypeeight
\installprettyhandler 9 \TEXtypenine
\installprettyhandler 0 \TEXtypezero}
\doglobal\newif\ifinTEXcommand
\doglobal\newif\ifinTEXparameter
\gdef\TEXbeginofcommand
{\TEXendofparameter
\ifinTEXcommand
\else
\global\inTEXcommandtrue
\global\firstinTEXcommandtrue
\beginofpretty[\!!prettytwo]%
\fi}
\gdef\TEXendofcommand
{\ifinTEXcommand
\endofpretty
\global\inTEXcommandfalse
\global\firstinTEXcommandfalse
\fi}
\gdef\TEXbeginofparameter
{\TEXendofcommand
\ifinTEXparameter
\else
\global\inTEXparametertrue
\beginofpretty[\!!prettythree]%
\fi}
\gdef\TEXendofparameter
{\ifinTEXparameter
\endofpretty
\global\inTEXparameterfalse
\fi}
\gdef\ifnotfirstinTEXcommand#1
{\iffirstinTEXcommand
\getpretty{#1}%
\TEXendofcommand
\else}
\gdef\TEXtypeone#1%
{\ifnotfirstinTEXcommand#1
\TEXendofcommand
\TEXendofparameter
\beginofpretty[\!!prettyone]\getpretty{#1}\endofpretty
\fi}
\gdef\TEXtypetwo#1%
{\ifnotfirstinTEXcommand#1
\TEXendofcommand
\TEXendofparameter
\beginofpretty[\!!prettythree]\getpretty{#1}\endofpretty
\fi}
\gdef\TEXtypethree#1%
{\ifnotfirstinTEXcommand#1
\TEXendofcommand
\TEXendofparameter
\beginofpretty[\!!prettyfour]\getpretty{#1}\endofpretty
\fi}
\gdef\TEXtypefour#1%
{\ifnotfirstinTEXcommand#1
\TEXendofcommand
\TEXendofparameter
\getpretty{#1}%
\fi}
\gdef\TEXtypefive#1%
{\ifnotfirstinTEXcommand#1
\TEXbeginofparameter
\getpretty{#1}%
\fi}
\gdef\TEXtypesix#1%
{\ifnotfirstinTEXcommand#1
\ifinTEXparameter
\ifsplitTEXparameters
\TEXendofparameter
\getpretty{#1}%
\else
\getpretty{#1}%
\TEXendofparameter
\fi
\else
\TEXendofcommand
\getpretty{#1}%
\fi
\fi}
\gdef\TEXtypeseven#1%
{\ifnotfirstinTEXcommand#1
\TEXbeginofcommand
\getpretty{#1}%
\fi}
\gdef\TEXtypeeightA#1#2%
{\getprettydata{#2}%
\ifnum\prettytype=80
\TEXendofparameter
\ifsplitTEXcontrols
\ifinTEXcommand
\def\next{\TEXendofcommand\getpretty{#1}\getpretty{#1}\TEXbeginofcommand}%
\else
\def\next{\getpretty{#1}\getpretty{#1}}%
\fi
\else
\def\next{\getpretty{#1}\getpretty{#1}}%
\fi
\else
\def\next{\TEXtypeeightB{#1}#2}%
\fi
\next}
\gdef\TEXtypeeightB
{\TEXendofparameter
\ifinTEXcommand
\firstinTEXcommandfalse
\expandafter\getpretty
\else
\expandafter\TEXtypethree
\fi}
\gdef\TEXtypeeight
{\handlenextnextpretty\TEXtypeeightA\TEXtypeeightB}
\gdef\TEXtypenine
{\TEXendofparameter
\global\firstinTEXcommandfalse
\getpretty}
%\gdef\TEXtypezero
% {\disableprettyafterwards % only when enabled of course
% \ifnewpretty\expandafter\handlenewpretty\fi\TEXtypethree}
\long\gdef\naturalTEXtext#1#2\relax% local alternative for \naturaltextext
{\convertargument#2\to\ascii
\doifinstringelse{\letterpercent}{\ascii}
{\long\def\next{\TEXtypethree{#1}#2\relax}}
%{\long\def\next{\bgroup\prettynaturalfont\restorecatcodes\scantokens{\ignorespaces#2}\egroup}}%
{\long\def\next{\bgroup\prettynaturalfont{\restorecatcodes\scantokens{\ignorespaces#2}}\egroup}}%
\next}
\gdef\TEXtypezero
{\ifnaturaltextext
\expandafter\naturalTEXtext
\else
\disableprettyafterwards % only when enabled of course
\expandafter\handlenewpretty\expandafter\TEXtypethree
\fi}
\protect \endinput
|
