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%D \module
%D [ file=lang-url,
%D version=2008.01.22, % used to be lang-mis
%D title=\CONTEXT\ Language Macros,
%D subtitle=Language Options,
%D author=Hans Hagen,
%D date=\currentdate,
%D copyright={PRAGMA ADE \& \CONTEXT\ Development Team}]
%C
%C This module is part of the \CONTEXT\ macro||package and is
%C therefore copyrighted by \PRAGMA. See mreadme.pdf for
%C details.
\registerctxluafile{lang-url}{1.001}
\unprotect
%D Traditionally this code is in the language namespace as
%D hyphenation relates to languages.
%D \macros
%D {hyphenatedurl}
%D
%D For those who want to put full \URL's in a text, we offer
%D
%D \startbuffer
%D \hyphenatedurl{http://optimist.optimist/optimist/optimist.optimist#optimist}
%D \stopbuffer
%D
%D \typebuffer
%D
%D which breaks at the appropriate places. Watch the \type{#}
%D hack.
%D
%D When passed as argument, like in \type {\goto}, one needs
%D to substitute a \type {\\} for each \type{#}.
%D
%D \startbuffer
%D \hyphenatedurl{http://this.is.a.rather/strange/reference#indeed}
%D \stopbuffer
%D
%D \typebuffer
\newtoks\everyhyphenatedurl
\appendtoks
\let\&\letterampersand
\let\#\letterhash
\let\~\lettertilde
\let\\\letterbackslash
\let\$\letterdollar
\let\^\letterhat
\let\_\letterunderscore
\let\{\letterleftbrace
\let\}\letterrightbrace
\let\|\letterbar
\let~=\lettertilde
\let|=\letterbar
\to \everyhyphenatedurl
\let\hyphenatedurlseparator \empty % \periodcentered
\let\hyphenatedurldiscretionary\empty
\setnewconstant\hyphenatedurllefthyphenmin \plusthree
\setnewconstant\hyphenatedurlrighthyphenmin\plusthree
\def\lang_url_more{\penalty\plustenthousand\hskip\scratchskipone\penalty\plustenthousand}
\def\lang_url_less{\penalty\plustenthousand\hskip\scratchskiptwo\penalty\plustenthousand}
\def\lang_url_trac{\penalty\plustenthousand\hsmash{\darkred\vl}\penalty\plustenthousand}
\def\lang_url_a#1{\lang_url_more\char#1\lang_url_show\discretionary{}{\hyphenatedurlseparator}{}}
\def\lang_url_b#1{\lang_url_more\discretionary{\hyphenatedurlseparator}{}{}\lang_url_show\char#1\relax}
\def\lang_url_d#1{\lang_url_more\discretionary{\lang_url_show}{\lang_url_show}{\lang_url_show}}
\def\lang_url_l#1{\lang_url_less\char#1\relax}
\def\lang_url_c#1{\lang_url_more\char#1\relax}
\def\lang_url_L#1{\lang_url_less\char#1\relax}
\def\lang_url_C#1{\lang_url_more\char#1\relax}
\unexpanded\def\showhyphenatedurlbreaks % for old times sake
{\let\lang_url_show\lang_url_trac}
\installtextracker
{languages.url}
{\let\lang_url_show\lang_url_trac}
{\let\lang_url_show\relax}
\let\lang_url_show\relax
\unexpanded\def\sethyphenatedurlnormal#1{\ctxcommand{hyphenatedurl.setcharacters(\!!bs#1\!!es,0)}} % Lua names will change
\unexpanded\def\sethyphenatedurlbefore#1{\ctxcommand{hyphenatedurl.setcharacters(\!!bs#1\!!es,1)}} % Lua names will change
\unexpanded\def\sethyphenatedurlafter #1{\ctxcommand{hyphenatedurl.setcharacters(\!!bs#1\!!es,2)}} % Lua names will change
% \sethyphenatedurlafter{ABCDEF}
\unexpanded\def\hyphenatedurl#1%
{\dontleavehmode
\begingroup
\the\everyhyphenatedurl
\normallanguage\zerocount
\let\a\lang_url_a % after
\let\b\lang_url_b % before
\let\d\lang_url_d % disc
\let\l\lang_url_l % letter
\let\c\lang_url_c % character
\let\L\lang_url_L % letter_nobreak
\let\C\lang_url_C % character_nobreak
\scratchskipone\zeropoint\s!plus\dimexpr\emwidth/12\s!minus\dimexpr\emwidth/24\relax % 1.00pt @ 12pt
\scratchskiptwo\zeropoint\s!plus\dimexpr\emwidth/48\s!minus\dimexpr\emwidth/96\relax % 0.25pt @ 12pt
\normalexpanded{\noexpand\ctxcommand{hyphenatedurl(
\!!bs\noexpand\detokenize{#1}\!!es,
\number\hyphenatedurllefthyphenmin,
\number\hyphenatedurlrighthyphenmin,
"\hyphenatedurldiscretionary"
)}}%
\endgroup}
%D \macros
%D {hyphenatedfilename}
%D
%D For the moment we treat filenames in a similar way,
%D
%D \starttyping
%D \hyphenatedfilename{here/there/filename.suffix}
%D \stoptyping
\ifx\hyphenatedfilename\undefined \let\hyphenatedfilename\hyphenatedurl \fi
% \def\test#1%
% {\dontleavehmode
% \begingroup
% \tttf
% \hyphenatedurl {%
% \letterampersand #1\letterampersand #1\letterampersand #1\letterampersand #1\letterampersand
% \letterhash #1\letterhash #1\letterpercent #1\letterslash #1\letterampersand
% }%
% \endgroup}
% \dorecurse{100}{\test{a} \test{ab} \test{abc} \test{abcd} \test{abcde} \test{abcdef}}
\protect \endinput
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