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%D \module
%D [ file=t-transliterator,
%D version=2021-11-21 18:19:24+0100,
%D title=\CONTEXT\ User Module,
%D subtitle=The Transliterator,
%D author=Philipp Gesang,
%D date=\currentdate,
%D copyright=Philipp Gesang,
%D license=2-clause BSD,
%D email={pgesang at ix dot urz dot uni-heidelberg dot de}]
%D This module is licensed under the conditions of the BSD license with
%D two clauses, there is a copy it in a file named "COPYING" in the
%D transliterator source tree.
\writestatus{loading}{Transliteration from non-Latin scripts}
\unprotect
\definenamespace [TRL] [
name=transliterate,
type=module,
setup=list,
parent=TRL,
style=no,
version=2021,
comment=Transliteration from non-Latin scripts.,
]
\ctxlua{environment.loadluafile ("transliterator")}
%D Use the Transliterator by adding \type{\usemodule[transliterator]} somewhere
%D before \type{\starttext}. Adjust the Transliterator through the
%D \type{\setuptransliterate} command. As a first argument it accepts a set of
%D key-value options; at present you may configure \type{mode} and
%D \type{hyphenate}.
\def\set_serbian_exceptions{%
\doifelse{\transliterateparameter{sr_exceptions}}\v!yes
{\ctxlua{thirddata.translit.sr_except = true}}
{\ctxlua{thirddata.translit.sr_except = false}}%
}
\def\set_hinting{%
\doifelse{\transliterateparameter{hinting}}\v!yes
{\ctxlua{thirddata.translit.hinting = true}}
{\ctxlua{thirddata.translit.hinting = false}}%
}
\appendtoks \set_serbian_exceptions \to \everysetuptransliterate
\appendtoks \set_hinting \to \everysetuptransliterate
%D At first we'll set some defaults:
\setuptransliterate[%
debug=\v!false,
hinting=\v!yes,
hyphenate=cz,
mode=ru_old,
sr_exceptions=\v!yes,
deficient_font=\v!no,
]
%D Possible values for \type{mode} are by the time of this writing:
%D \type{ru}, \type{ru_transcript_de}, \type{ru_transcript_en}, \type{ru_old},
%D \type{all}, \type{iso9_ocs}, \type{ocs}, \type{ocs_gla}, \type{ru_cz},
%D \type{ocs_cz}, \type{gr} and \type{gr_n}.
%D As not all fonts, even the expensive ones, support some of the most frequent
%D unicode signs used in ISO~9, there are fallbacks for the transliterations of
%D the weak and hard sign.
%D They work with the modes \type{iso9_ocs}, \type{all} and
%D \type{ru_old} only and can be triggered by setting the
%D variable \type{deficient_font} to the value {\em yes}.
%D This will transliterate {\em ь} and {\em ъ} (both upper and
%D lower case) to the more common, but non-ISO characters {\em ’} and {\em ”}
%D respectively.
%D Possible values for \type{hyphenate} are all valid \CONTEXT\ language code, for an
%D overview see \type{http://wiki.contextgarden.net/Language_Codes}.
%D In praxi you may want to choose either Czech (the default) or Slovak
%D (\type{sk}) for most transliterations from cyrillic scripts. I've not yet
%D made up my mind concerning Greek transliteration, any suggestions are
%D welcome.
%D The following will help debugging and reviewing tables. Make sure your
%D typescript can handle the characters, in general it's no use with Latin
%D Modern which unfortunately provides only a restricted set of the unicode
%D range.
%D
%D The user-level command to output a single substitution table is
%D \type{\showOneTranslitTab{#1}}.
\define[1]\showOneTranslitTab{%
\startluacode
environment.loadluafile ("trans_tables_iso9")
environment.loadluafile ("trans_tables_trsc")
environment.loadluafile ("trans_tables_scntfc")
environment.loadluafile ("trans_tables_trsc")
environment.loadluafile ("trans_tables_glag")
environment.loadluafile ("trans_tables_gr")
thirddata.translit.gen_rules_en()
thirddata.translit.gen_rules_de()
thirddata.translit.show_tab(translit["\luaescapestring{#1}"])
\stopluacode
}
%D The user-level command to output all defined tables is
%D \type{\showTranslitTabs}.
\define\showTranslitTabs{%
\ctxlua{thirddata.translit.show_all_tabs()}%
}
\def\translitDebug#1{%
\doif{\transliterateparameter{debug}}{yes}{%
{\ss\inmargin{\ctxlua{thirddata.translit.debug_next()}} #1}%
}%
}
%D The user-level command \type{\transliterate[#1]{#2}} does the job of
%D switching to a given language (for hyphenation) and adjusting the
%D substitution method locally. It takes an optional list \type{[#1]} of
%D key-value arguments to allow ad-hoc specification of either two that deviate
%D from the defaults set initially by means of \type{\setuptransliterate}.
%D
%D Internally, \type{\dotransliterate} is called according to the \CONTEXT\
%D coding style and in case the user provides \type{hyphenate=} or
%D \type{mode=} those will be used instead of the globals. Note that this
%D leaves the latter unchanged. Thus, in order to permanently switch to
%D another transliteration style the user would have to set it by calling
%D \type{\setuptransliterate} again.
%D
% All credits for rewriting the TeX code go to Wolfgang as well.
% http://www.ntg.nl/pipermail/ntg-context/2010/047816.html
\def\dotransliterate[#1]#2{%
\bgroup\iffirstargument
\setuptransliterate[#1]%
\fi
\language[\transliterateparameter{hyphenate}]%
\ctxlua{
thirddata.translit.deficient_font = "\transliterateparameter{deficient_font}"
thirddata.translit.transliterate("\transliterateparameter{mode}","\luaescapestring{#2}")
}%
\egroup%
}
\unexpanded\def\transliterate{\dosingleempty\dotransliterate}
\def\expandabletransliterate#1{%
%\bgroup
%\setuptransliterate[#1]%
%\language[\transliterateparameter{hyphenate}]%
\ctxlua{
thirddata.translit.deficient_font = "\transliterateparameter{deficient_font}"
thirddata.translit.transliterate("\transliterateparameter{mode}","#1")
}%
%\egroup%
}
\unexpanded\def\starttransliterate{%
\bgroup%
\dosingleempty\dostarttransliterate%
}
\let\stoptransliterate\relax
\def\dostarttransliterate[#1]#2\stoptransliterate{%
\iffirstargument
\setuptransliterate[#1]%
\fi
\language[\transliterateparameter{hyphenate}]%
\ctxlua{thirddata.translit.transliterate("\transliterateparameter{mode}","\luaescapestring{#2}")}%
\egroup%
}
\newconditional\transliterate_useexpanded \setfalse\transliterate_useexpanded
\def\transliterate_conditional[#1]#2{%
\ifconditional\transliterate_useexpanded
\transliterate[#1]{#2}%
\else
\expandabletransliterate{#2}%
\fi%
}
\protect \endinput
% vim:ft=context
|
