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authorNorbert Preining <norbert@preining.info>2019-09-02 13:46:59 +0900
committerNorbert Preining <norbert@preining.info>2019-09-02 13:46:59 +0900
commite0c6872cf40896c7be36b11dcc744620f10adf1d (patch)
tree60335e10d2f4354b0674ec22d7b53f0f8abee672 /macros/context/contrib/context-vim/tex/context/third/vim/t-syntax-highlight.mkii
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+%D \module
+%D [ file=t-syntax-highlight,
+%D version=2013.04.15,
+%D title=\CONTEXT\ User Module,
+%D subtitle=Code syntax highlighting,
+%D author=Aditya Mahajan,
+%D date=\currentdate,
+%D copyright=Aditya Mahajan,
+%D email=adityam <at> ieee <dot> org,
+%D license=Simplified BSD License]
+
+\writestatus{loading}{Code syntax highlighting (ver: 2013.04.15)}
+
+\startmodule [syntax-highlight]
+\usemodule [syntax-groups]
+\usemodule [filter] % loads module-catcodes
+
+\unprotectmodulecatcodes
+
+\startinterface all
+ \setinterfaceconstant {syntax} {syntax}
+ \setinterfaceconstant {highlight} {highlight}
+ \setinterfaceconstant {highlightcolor} {highlightcolor}
+\stopinterface
+
+%D Name space
+
+\def\syntaxhighlighting@id {syntaxhighlighting}
+\def\syntaxhighlighting@namespace {@@@@\syntaxhighlighting@id}
+\def\syntaxhighlighting@name {}
+
+\edef\t!syntaxhighlighting {\syntaxhighlighting@id}
+
+\installparameterhandler \syntaxhighlighting@namespace \syntaxhighlighting@id
+\installsetuphandler \syntaxhighlighting@namespace \syntaxhighlighting@id
+
+%D Helper macro
+
+\def\syntaxhighlighting@yes{\v!yes,\v!on}
+
+\def\definesyntaxhighlighting
+ {\dodoubleargument\syntaxhighlighting@define}
+
+\starttexdefinition syntaxhighlighting@define [#1][#2]
+ \setupsyntaxhighlighting[#1][\s!parent=\syntaxhighlighting@namespace,#2]
+
+ \edef\syntaxhighlighting@name{#1}
+ \defineexternalfilter[#1][\s!parent=\syntaxhighlighting@namespace#1]
+
+ \doifmode\s!mkiv{\setups{syntaxhighlighting@setup_line_number_mkiv}}
+
+ \setvalue{type#1file}{\getvalue{process#1file}}
+
+\stoptexdefinition
+
+\startsetups syntaxhighlighting@setup
+
+ \edef\syntaxhighlighting@name{\currentexternalfilter}
+ \edef\colorscheme@name{\externalfilterparameter\c!alternative}
+
+ \let\SYN\syntaxgroup
+ \edef\HGL{\externalfilterparameter{\c!highlight\c!command}}
+ \let\\\textbackslash
+ \let\{\textbraceleft
+ \let\}\textbraceright
+ \let\SYNBOL\donothing
+ \let\SYNEOL\donothing
+
+ \def\tab##1%
+ {\dorecurse{##1}{\obeyedspace}}%
+
+ \setups{syntaxhighlighting@setup_line_number_mkii}%
+
+ \forgetall
+ \doifinset{\externalfilterparameter\c!option}{\v!packed}
+ {\setupwhitespace[\v!none,\v!flexible]}%
+
+ \doifnotinset{\externalfilterparameter\c!option}{\v!hyphenated}
+ {\language\minusone}%
+
+ \setcatcodetable\externalfilter@minimal_catcodes
+ \expandafter\def\activeendoflinetoken{\strut\par}
+ \activatespacehandler{\syntaxhighlighting@namespace\externalfilterparameter\c!space}
+ \raggedright
+\stopsetups
+
+\startsetups syntaxhighlighting@setup_line_number_mkiv
+\definelinenumbering [#1]
+
+\setuplinenumbering
+ [#1]
+ [\c!conversion=\externalfilterparameter\c!numberconversion,
+ \c!start=\externalfilterparameter{\c!number\c!start},
+ \c!step=\externalfilterparameter{\c!number\c!step},
+ \c!method=\externalfilterparameter{\c!number\c!method},
+ \c!location=\externalfilterparameter{\c!number\c!location},
+ \c!style=\externalfilterparameter\c!numberstyle,
+ \c!color=\externalfilterparameter\c!numbercolor,
+ \c!width=\externalfilterparameter{\c!number\c!width},
+ \c!left=\externalfilterparameter{\c!number\c!left},
+ \c!right=\externalfilterparameter{\c!number\c!right},
+ \c!command=\externalfilterparameter\c!numbercommand,
+ \c!distance=\externalfilterparameter{\c!number\c!distance},
+ \c!align=\externalfilterparameter{\c!number\c!align},
+ ]
+\stopsetups
+
+\doifmode\s!mkii
+ {\newcount\syntaxhighlighting@linenumber}
+
+\startsetups syntaxhighlighting@setup_line_number_mkii
+\doifinset{\externalfilterparameter\c!numbering}\syntaxhighlighting@yes
+ {% setuplinenumbering resets \linenumber. So we save the value of linenumber and
+ % revert it back.
+ \syntaxhighlighting@linenumber=\linenumber
+
+ \setuplinenumbering
+ [\c!conversion=\externalfilterparameter\c!numberconversion,
+ \c!start=\externalfilterparameter{\c!number\c!start},
+ \c!step=\externalfilterparameter{\c!number\c!step},
+ \c!method=\externalfilterparameter{\c!number\c!method},
+ \c!location=\externalfilterparameter{\c!number\c!location},
+ \c!style=\externalfilterparameter\c!numberstyle,
+ \c!color=\externalfilterparameter\c!numbercolor,
+ \c!width=\externalfilterparameter{\c!number\c!width},
+ \c!left=\externalfilterparameter{\c!number\c!left},
+ \c!right=\externalfilterparameter{\c!number\c!right},
+ \c!command=\externalfilterparameter\c!numbercommand,
+ \c!distance=\externalfilterparameter{\c!number\c!distance},
+ \c!align=\externalfilterparameter{\c!number\c!align},
+ ]
+
+ \linenumber=\syntaxhighlighting@linenumber}
+\stopsetups
+
+\starttexdefinition syntaxhighlighting@read_command #1
+ \syntaxhighlighting@linenumbering_start
+ \ReadFile{#1}
+ \syntaxhighlighting@linenumbering_stop
+\stoptexdefinition
+
+
+\starttexdefinition syntaxhighlighting@linenumbering_stop
+ \dostoptagged
+ \doifinset{\externalfilterparameter\c!numbering}\syntaxhighlighting@yes
+ {\stoplinenumbering}
+\stoptexdefinition
+
+\starttexdefinition syntaxhighlighting@linenumbering_start
+ \doifinset{\externalfilterparameter\c!numbering}\syntaxhighlighting@yes
+ {\doifelse{\externalfilterparameter{\c!number\c!continue}}\syntaxhighlighting@yes
+ {\startlinenumbering[\v!continue]}
+ {\startlinenumbering}}
+\stoptexdefinition
+\starttexdefinition syntaxhighlighting@linenumbering_stop
+ \doifinset{\externalfilterparameter\c!numbering}\syntaxhighlighting@yes
+ {\stoplinenumbering}
+\stoptexdefinition
+
+
+\setupsyntaxhighlighting
+ [\c!tab=4,
+ \c!space=\v!off,
+ \c!lines=\v!split,
+ \c!start=1,
+ \c!stop=0,
+ % \c!syntax=context,
+ \c!alternative=pscolor,
+ \c!before=,
+ \c!after=,
+ \c!spacebefore=\v!none,
+ \c!spaceafter=\v!none,
+ \c!location=\v!paragraph,
+ \c!style=\tttf,
+ \c!color=,
+ \c!align={\v!flushleft,\v!nothyphenated}, %Does not work due to \forgetall
+ \c!filtercommand=echo, % placeholder
+ \c!continue=yes,
+ \c!read=\v!yes,
+ \c!readcommand=\syntaxhighlighting@read_command,
+ \c!output=\externalfilterinputfile, % placeholder
+ \c!setups=syntaxhighlighting@setup,
+ \c!option=\v!packed, % \v!hyphenated
+ \s!parent=\externalfilter@namespace,
+ % Numbering options
+ \c!numbering=\v!no,
+ \c!number\c!start=1,
+ \c!number\c!step=1,
+ \c!number\c!continue=\v!no,
+ \c!numberconversion=\v!numbers,
+ \c!number\c!method=\v!first,
+ \c!number\c!location=\v!left,
+ \c!numberstyle=\ttx,
+ \c!numbercolor=,
+ \c!number\c!width=2em,
+ \c!number\c!left=,
+ \c!number\c!right=,
+ \c!numbercommand=,
+ \c!number\c!distance=0.5em,
+ \c!number\c!align=\v!flushright,
+ %Highlight options
+ \c!highlight=,
+ \c!highlightcolor=lightgray,
+ \c!highlight\c!command=\syntaxhighlightline,
+ ]
+
+\def\currentsyntaxhighlighting {\syntaxhighlighting@name}
+
+% Space handler
+%
+% The space handing code for MkII and MkIV is not consistent. So, we provide our
+% own versions.
+
+\setvalue{\syntaxhighlighting@namespace @\c!lines @\v!split}{\hskip}
+\setvalue {\syntaxhighlighting@namespace @\c!lines @\v!fixed}{\dontleavehmode\kern}
+
+% default
+\setvalue{\syntaxhighlighting@namespace @\c!lines @}{\hskip}
+
+\def\syntaxhighlighting@split%
+ {\getvalue{\syntaxhighlighting@namespace @\c!lines @\externalfilterparameter\c!lines}}
+
+% Visible space
+\installspacehandler {\syntaxhighlighting@namespace\v!on}
+ {\obeyspaces
+ \unexpanded\def\obeyedspace
+ {\syntaxhighlighting@split\zeropoint\relax
+ \hbox{\normalcontrolspace}%
+ \syntaxhighlighting@split\zeropoint\relax}}%
+
+% Invisible space
+\installspacehandler {\syntaxhighlighting@namespace\v!off}
+ {\obeyspaces
+ \unexpanded\def\obeyedspace
+ {\syntaxhighlighting@split\interwordspace\relax}}
+
+% Default
+\installspacehandler {\syntaxhighlighting@namespace}
+ {\activatespacehandler {\syntaxhighlighting@namespace\v!off}}
+
+% Line highlighting
+
+\definetextbackground[syntaxhighlightline]
+ [\c!location=\v!text,
+ %% location=paragraph causes a spurious line break
+ \c!alternative=0,
+ \c!frame=\v!off,
+ \c!background=\v!color,
+ \c!backgroundcolor=\externalfilterparameter\c!highlightcolor,
+ \c!before=,
+ \c!after=,
+ ]
+
+
+\protectmodulecatcodes
+
+\stopmodule