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%D \module
%D [ file=lang-lab,
%D version=1997.08.27,
%D title=\CONTEXT\ Language Macros,
%D subtitle=Labels,
%D author=Hans Hagen / Tobias Burnus,
%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.
\writestatus{loading}{ConTeXt Language Macros / Labels}
\registerctxluafile{lang-lab}{1.001}
\registerctxluafile{lang-txt}{1.001}
\unprotect
%D Left-overs:
\ifdefined\sixperemspace \else
\def\sixperemspace{\normalUchar"2006}
\fi
%D In this module we deal with language dependant labels and
%D prefixes, like in {\em Figure~12} and {\em Chapter 1}. In
%D this file we set the default values. Users can easily
%D overrule these.
%D
%D This module is dedicated to the grandfather of Tobias
%D Burnus, who's extensive languages oriented library helped us
%D a lot in finding the right translations. All those labels
%D are collected in files that reflect their common ancestor.
%D
%D Not all languages can be satisfied with the labeling
%D mechanism as provided here. Chinese for instance put a label
%D in front as well as after a part number. This is why the
%D current implementation of labels supports two labels too.
%D \macros
%D {setupheadtext, setuplabeltext}
%D
%D First we present some macros that deal with what we will
%D call head and label texts. Such texts are defines by:
%D
%D \showsetup{setupheadtext}
%D \showsetup{setuplabeltext}
%D
%D A regular \CONTEXT\ stores some 1500 labels at most.
%D
%D These commands accept all kind of inputs:
%D
%D \starttyping
%D \setuplabeltext [language] [labellabel=text]
%D \setuplabeltext [language] [labellabel=text,labellabel=text,...]
%D \setuplabeltext [labellabel=text]
%D \setuplabeltext [labellabel=text,labellabel=text,...]
%D \stoptyping
%D
%D The last two cases concern the current language.
\installcorenamespace{label}
\let\currentlabelcategory\empty
\unexpanded\def\definelabelclass
{\dodoubleempty\lang_labels_define_class}
\def\lang_labels_define_class[#1][#2]%
{\normalexpanded
{\lang_labels_define_class_indeed
{#1}%
{\ifsecondargument#2\else\zerocount\fi}%
\expandafter\noexpand\csname dogetupsome#1text\endcsname
\expandafter\noexpand\csname #1language\endcsname
\expandafter\noexpand\csname dodogetupsome#1text\endcsname
\expandafter\noexpand\csname left#1text\endcsname
\expandafter\noexpand\csname right#1text\endcsname
\expandafter\noexpand\csname #1texts\endcsname
\expandafter\noexpand\csname #1text\endcsname}}
% hm, not interfaced
\unexpanded\def\lang_labels_define_class_indeed#1#2#3#4#5#6#7#8#9%
{\setuvalue{setup#1text}{\protecttextprefixes#2\def\currenttextprefixclass{#1}\dodoubleempty\lang_labels_text_prefix_setup}%
\setuvalue{preset#1text}{\protecttextprefixes1\def\currenttextprefixclass{#1}\dodoubleempty\lang_labels_text_prefix_setup}%
\setuvalue{copy#1text}{\protecttextprefixes1\def\currenttextprefixclass{#1}\dodoubleempty\lang_labels_text_prefix_copy}%
\setuvalue{start#1text}{\protecttextprefixes1\def\currenttextprefixclass{#1}\dotripleempty\lang_labels_text_prefix_start[#1]}%
\letvalue{stop#1text}\relax
\def#4{\reallanguagetag{\defaultlanguage\currentmainlanguage}}%
\ifnum#2=\plustwo % used for math and tags
\def#3{#5#4}%
\def#5##1##2% ##1=language
{\ifcsname\??label\currentlabelcategory#1:##1:##2\endcsname
\lastnamedcs
\else\ifcsname\??label#1:##1:##2\endcsname
\lastnamedcs
% \else\ifcsname\??language#4\s!default\endcsname
% \expandafter#5\csname\??language#4\s!default\endcsname{##2}%
\else\ifcsname\??language##1\s!default\endcsname
%\expandafter#5\csname\??language##1\s!default\endcsname{##2}%
\expandafter#5\lastnamedcs{##2}%
\else\ifcsname\??label\currentlabelcategory#1:##2\endcsname
\lastnamedcs
\else\ifcsname\??label#1:##2\endcsname
\lastnamedcs
\else\ifcsname\??label\currentlabelcategory#1:\s!en:##2\endcsname
\lastnamedcs
\else\ifcsname\??label#1:\s!en:##2\endcsname
\lastnamedcs
\else
##2%
\fi\fi\fi\fi\fi\fi\fi}%
\let#6\gobbleoneargument
\let#7\gobbleoneargument
\let#8\gobbletwoarguments
\let#9#3%
\else
\unexpanded\def#3{#5#4}%
\unexpanded\def#5##1##2%
{\ifcsname\??label#1:##1:##2\endcsname
%\expandafter\let\expandafter\thetextprefix\csname\??label#1:##1:##2\endcsname
\expandafter\let\expandafter\thetextprefix\lastnamedcs
\else\ifcsname\??language#4\s!default\endcsname
%\expandafter#5\csname\??language#4\s!default\endcsname{##2}%
\expandafter#5\lastnamedcs{##2}%
\else\ifcsname\??label#1:##2\endcsname
%\expandafter\let\expandafter\thetextprefix\csname\??label#1:##2\endcsname
\expandafter\let\expandafter\thetextprefix\lastnamedcs
\else\ifcsname\??label#1:\s!en:##2\endcsname
%\expandafter\let\expandafter\thetextprefix\csname\??label#1:\s!en:##2\endcsname
\expandafter\let\expandafter\thetextprefix\lastnamedcs
\else
\let\thetextprefix\dummytextprefix
\fi\fi\fi\fi}%
\unexpanded\def#6##1{#3{##1}\expandafter\flushleftlabelclass \thetextprefix}%
\unexpanded\def#7##1{#3{##1}\expandafter\flushrightlabelclass\thetextprefix}%
\unexpanded\def#8##1{#3{##1}\expandafter\flushbothlabelclass \thetextprefix}% #2
\unexpanded\def#9##1{#3{##1}\expandafter\flushleftlabelclass \thetextprefix}%
\fi
\appendtoks
\let#6\firstofoneargument % to be checked
\let#7\firstofoneargument % to be checked
\let#8\firstofoneargument % to be checked
\let#9\firstofoneargument % to be checked
\to \everysimplifycommands}
\let\flushleftlabelclass \firstoftwoarguments
\let\flushrightlabelclass\secondoftwoarguments
\def\flushbothlabelclass #1#2#3{#1#3#2}
\def\dummytextprefix {\empty\empty}
%D \macros
%D {headtext, labeltext, leftlabeltext, rightlabeltext, labeltexts}
%D
%D Once defined, head and label texts can be called upon using:
%D
%D \showsetup{headtext}
%D \showsetup{labeltext}
%D
%D \macros
%D {presetheadtext,presetlabeltext}
%D
%D These macros enable us to automatically define head and label
%D texts without replacing predefined ones. They are internal macros.
\appendtoks \let\labellanguage\currentlanguage \to \everycurrentdate
\newconstant\protecttextprefixes
\let\currenttextprefixtag \s!unknown
\let\currenttextprefixclass\s!unknown
\def\lang_labels_text_prefix_start[#1][#2][#3]% class language name
{\ifthirdargument
\edef\currenttextprefixtag{\reallanguagetag{#2}}%
\edef\currenttextprefixname{#3}%
\else
\edef\currenttextprefixtag{\reallanguagetag\currentmainlanguage}%
\edef\currenttextprefixname{#2}%
\fi
\grabuntil{stop#1text}\lang_labels_text_prefix_start_indeed}
\def\lang_labels_text_prefix_start_indeed#1% text (not special checking done here yet, only for long texts anyway)
{\expandafter\edef\csname\??label\currenttextprefixclass:\currenttextprefixtag:\currenttextprefixname\endcsname%
{{\clf_strip{#1}}\empty}}
\def\lang_labels_text_prefix_setup[#1][#2]%
{\ifsecondargument
\edef\currenttextprefixtag{\reallanguagetag{#1}}%
\processcommalist[#2]\lang_labels_text_prefix_setup_indeed
\else
\edef\currenttextprefixtag{\reallanguagetag\currentmainlanguage}%
\processcommalist[#1]\lang_labels_text_prefix_setup_indeed
\fi}
\def\lang_labels_text_prefix_setup_indeed#1%
{\lang_labels_text_prefix_assign[#1]}
\def\lang_labels_text_prefix_assign[#1=#2]%
{\lang_labels_text_prefix_assign_indeed{#1}[#2,,]}
\def\lang_labels_text_prefix_assign_indeed#1%
{\ifcase\protecttextprefixes
% no checking
\expandafter\lang_labels_text_prefix_assign_yes
\or
% checking
\ifcsname\??label\currenttextprefixclass:\currenttextprefixtag:#1\endcsname
\expandafter\expandafter\expandafter\lang_labels_text_prefix_assign_nop
\else
\expandafter\expandafter\expandafter\lang_labels_text_prefix_assign_yes
\fi
\or
% simple assignment (a bit overkill but it fits in the whole)
\expandafter\lang_labels_text_prefix_assign_dumb
\fi{#1}}
\let\m_lang_labels_left \empty
\let\m_lang_labels_right\empty
% \def\lang_labels_text_prefix_assign_yes#1[#2,#3,#4]%
% {\def\m_lang_labels_left {#2}% no longer an edef ... else \Word undefined expansion issues
% \def\m_lang_labels_right{#3}% no longer an edef ... else \Word undefined expansion issues
% \ifx\m_lang_labels_right\empty
% \ifx\m_lang_labels_left\empty
% \expandafter\def\csname\??label\currenttextprefixclass:\currenttextprefixtag:#1\endcsname{\empty\empty}%
% \else
% \expandafter\def\csname\??label\currenttextprefixclass:\currenttextprefixtag:#1\endcsname{{#2}\empty}%
% \fi
% \else
% \expandafter\def\csname\??label\currenttextprefixclass:\currenttextprefixtag:#1\endcsname{{#2}{#3}}%
% \fi}
%
% how we love obscure efficicency ...
\def\lang_labels_text_prefix_assign_yes#1[#2,#3,#4]%
{\def\m_lang_labels_left {#2}% no longer an edef ... else \Word undefined expansion issues
\def\m_lang_labels_right{#3}% no longer an edef ... else \Word undefined expansion issues
\expandafter\def\csname\??label\currenttextprefixclass:\currenttextprefixtag:#1%
\ifx\m_lang_labels_right\empty
\ifx\m_lang_labels_left\empty
\endcsname{\empty\empty}%
\else
\endcsname{{#2}\empty}%
\fi
\else
\endcsname{{#2}{#3}}%
\fi}
\def\lang_labels_text_prefix_assign_nop#1[#2]%
{}
\def\lang_labels_text_prefix_assign_dumb#1[#2,#3]%
{\expandafter\def\csname\??label\currenttextprefixclass:\currenttextprefixtag:#1\endcsname{#2}}
\unexpanded\def\setlabeltextpair#1#2#3#4#5% a fast one for usage at the Lua end
{%\writestatus{!!!!}{#1:\reallanguagetag{#2}:#3}%
\expandafter\def\csname\??label#1:\reallanguagetag{#2}:#3\endcsname{{#4}{#5}}} % class tag key left right
\def\lang_labels_text_prefix_copy[#1][#2]%
{\ifsecondargument
\edef\currenttextprefixtag{\reallanguagetag{#1}}%
\processcommalist[#2]\lang_labels_text_prefix_copy_indeed
\else
\edef\currenttextprefixtag{\reallanguagetag\currentmainlanguage}%
\processcommalist[#1]\lang_labels_text_prefix_copy_indeed
\fi}
\def\lang_labels_text_prefix_copy_indeed#1%
{\lang_labels_text_prefix_copy_pair[#1]}
\def\lang_labels_text_prefix_copy_pair[#1=#2]%
{\lang_labels_text_prefix_copy_pair_indeed{#1}[#2,,]}
\def\lang_labels_text_prefix_copy_pair_indeed#1[#2,#3]%
{\expandafter\let
\csname\??label\currenttextprefixclass:\currenttextprefixtag:#1\expandafter\endcsname
\csname\??label\currenttextprefixclass:\currenttextprefixtag:#2\endcsname}
\definelabelclass [head] [0] % titles
\definelabelclass [label] [0] % texts
\definelabelclass [mathlabel] [0] % functions
\definelabelclass [taglabel] [2] % tags
\clf_definelabels{head}{titles}\s!true\relax
\clf_definelabels{label}{texts}\s!true\relax
\clf_definelabels{mathlabel}{functions}\s!false\relax
\clf_definelabels{taglabel}{tags}\s!false\relax
%D \macros
%D {translate}
%D
%D Sometimes macros contain language specific words that are to
%D be typeset. Such macros can be made (more) language
%D independant by using:
%D
%D \showsetup{translate}
%D
%D like for instance:
%D
%D \starttyping
%D \translate[en=something,nl=iets]
%D \stoptyping
%D
%D which expands to {\em something} or {\em iets}, depending on
%D de current language.
\installcorenamespace{translation}
\unexpanded\def\translate
{\dosingleempty\lang_translate}
\def\lang_translate[#1]%
{\getparameters[\??translation][#1]%
\ifcsname\??translation\currentlanguage\endcsname
\lastnamedcs
\else\ifcsname\??translation\s!en\endcsname
\lastnamedcs
\else
[translation #1]%
\fi\fi}
%D When used without argument, the last defined values are
%D used. This enables repetitive use like
%D
%D \starttyping
%D \en \translate\ means \nl \translate
%D \stoptyping
%D \macros
%D {assigntranslation}
%D
%D This macro is a system macro, and can be used to assign a
%D translation to a macro. Its form is:
%D
%D \starttyping
%D \assigntranslation[en=something,nl=iets]\to\command
%D \stoptyping
\unexpanded\def\assigntranslation[#1]\to#2% bad, this \to
{\getparameters[\??translation][#1]%
\edef#2{\csname\??translation\currentlanguage\endcsname}}
%D \macros
%D {commalistsentence}
%D
%D Redone in \LUA:
%D
%D \startbuffer
%D \commalistsentence[aap,noot,mies]
%D \commalistsentence[aap,noot]
%D \commalistsentence[aap]
%D \commalistsentence[a,b,c]
%D \commalistsentence[a,b,c][{ \& },{ and }]
%D \commalistsentence[a,b,c][+,-]
%D \stopbuffer
%D
%D \typebuffer
%D
%D \startlines
%D \getbuffer
%D \stoplines
\unexpanded\def\commalistsentence
{\dodoubleempty\typo_helpers_concat_comma_list}
\def\typo_helpers_concat_comma_list[#1][#2]%
{\clf_concatcommalist
text {#1}%
separators {#2}%
separator {\detokenize\expandafter{\normalexpanded{\labeltext{and-1}}}}%
last {\detokenize\expandafter{\normalexpanded{\labeltext{and-2}}}}%
\relax}
\setuplabeltext [\s!nl] [and-1={{, }}, and-2={{ en }}] % 1, 2 en 3
\setuplabeltext [\s!en] [and-1={{, }}, and-2={{, }}] % 1, 2, 3
\setuplabeltext [\s!de] [and-1={{, }}, and-2={{ und }}] % 1, 2 und 3
\setuplabeltext [\s!hr] [and-1={{, }}, and-2={{ i }}] % 1, 2 i 3
%D Goodie (handy at \LUA\ end):
\unexpanded\def\LABELTEXT#1{\WORD{\labeltext{#1}}} % only for simple cases!
\protect \endinput
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