%%^^A%% fontspec-code-user.dtx -- part of FONTSPEC <latex3.github.io/fontspec>
% \section{User command internals}
% \label{sec:codeinternal}
%
% \iffalse
% \begin{macrocode}
%<*fontspec>
% \end{macrocode}
% \fi
%
%
% \subsection{Font selection}
%
% \begin{macro}{\@@_main_fontspec:nn}
% This is the main command of the package that
% selects fonts with various features. It takes two arguments: the
% font name and the optional requested features of that
% font.
% \begin{macrocode}
\cs_new:Nn \@@_main_fontspec:nn
{
\fontspec_set_family:Nnn \f@family {#1} {#2}
\fontencoding { \g_@@_nfss_enc_tl }
\selectfont
}
% \end{macrocode}
% \end{macro}
%
% \begin{macro}{\rmfamily}
% \begin{macro}{\sffamily}
% \begin{macro}{\ttfamily}
% Add an encoding switch to the three family commands.
% \begin{macrocode}
\cs_if_exist:NTF \@rmfamilyhook
{
\tl_put_right:Nn \@rmfamilyhook {\fontencoding \l_@@_rmfamily_encoding_tl}
\tl_put_right:Nn \@sffamilyhook {\fontencoding \l_@@_sffamily_encoding_tl}
\tl_put_right:Nn \@ttfamilyhook {\fontencoding \l_@@_ttfamily_encoding_tl}
}
{
\tl_replace_all:cnn { rmfamily~ } { \fontfamily }
{ \fontencoding \l_@@_rmfamily_encoding_tl \fontfamily }
\tl_replace_all:cnn { sffamily~ } { \fontfamily }
{ \fontencoding \l_@@_sffamily_encoding_tl \fontfamily }
\tl_replace_all:cnn { ttfamily~ } { \fontfamily }
{ \fontencoding \l_@@_ttfamily_encoding_tl \fontfamily }
}
\tl_set:Nn \l_@@_rmfamily_encoding_tl { \encodingdefault }
\tl_set:Nn \l_@@_sffamily_encoding_tl { \encodingdefault }
\tl_set:Nn \l_@@_ttfamily_encoding_tl { \encodingdefault }
% \end{macrocode}
% \end{macro}
% \end{macro}
% \end{macro}
%
% \begin{macro}{\setmainfont}
% The following three macros perform equivalent operations setting
% the default font for a particular family: `roman', sans serif, or typewriter
% (monospaced).
%
% They end with |\normalfont| so that if they're
% used in the document, the change registers immediately.
% \begin{macrocode}
\cs_new:Nn \@@_main_setmainfont:nn
{
%<debug>\typeout{::~_main_setmainfont:nn}
\ifdefined\DeclareFontSeriesDefault
\DeclareFontSeriesDefault[rm]{bf}{\bfdefault}
\fi
\fontspec_set_family:Nnn \l_@@_rmfamily_family_tl {#1} {#2}
\tl_set_eq:NN \rmdefault \l_@@_rmfamily_family_tl
\tl_set_eq:NN \l_@@_rmfamily_encoding_tl \g_@@_nfss_enc_tl
\str_if_eq:eeT {\familydefault} {\rmdefault}
{ \tl_set_eq:NN \encodingdefault \g_@@_nfss_enc_tl }
\@@_setmainfont_hook:nn {#1} {#2} % for unicode-math only
\normalfont
}
% \end{macrocode}
% \end{macro}
%
% \begin{macro}{\setsansfont}
% Same as above.
% \begin{macrocode}
\cs_new:Nn \@@_main_setsansfont:nn
{
\ifdefined\DeclareFontSeriesDefault
\DeclareFontSeriesDefault[sf]{bf}{\bfdefault}
\fi
\fontspec_set_family:Nnn \l_@@_sffamily_family_tl {#1} {#2}
\tl_set_eq:NN \sfdefault \l_@@_sffamily_family_tl
\tl_set_eq:NN \l_@@_sffamily_encoding_tl \g_@@_nfss_enc_tl
\str_if_eq:eeT {\familydefault} {\sfdefault}
{ \tl_set_eq:NN \encodingdefault \g_@@_nfss_enc_tl }
\@@_setsansfont_hook:nn {#1} {#2} % for unicode-math only
\normalfont
}
% \end{macrocode}
% \end{macro}
%
% \begin{macro}{\setmonofont}
% Same as above.
% \begin{macrocode}
\cs_new:Nn \@@_main_setmonofont:nn
{
\ifdefined\DeclareFontSeriesDefault
\DeclareFontSeriesDefault[tt]{bf}{\bfdefault}
\fi
\fontspec_set_family:Nnn \l_@@_ttfamily_family_tl {#1} {#2}
\tl_set_eq:NN \ttdefault \l_@@_ttfamily_family_tl
\tl_set_eq:NN \l_@@_ttfamily_encoding_tl \g_@@_nfss_enc_tl
\str_if_eq:eeT {\familydefault} {\ttdefault}
{ \tl_set_eq:NN \encodingdefault \g_@@_nfss_enc_tl }
\@@_setmonofont_hook:nn {#1} {#2} % for unicode-math only
\normalfont
}
% \end{macrocode}
% \end{macro}
%
%
%
%
% \begin{macro}{\setmathrm}
% These commands are analogous to \cmd\setmainfont\ and others,
% but for selecting the font used for \cmd\mathrm, \etc. They
% can only be used in the preamble of the
% document. \cmd\setboldmathrm\ is used for specifying which
% fonts should be used in \cmd\boldmath.
% \begin{macrocode}
\cs_new:Nn \@@_main_setmathrm:nn
{
%<XE> \fontspec_gset_family:Nnn \g_@@_mathrm_tl {#1} {#2}
%<LU> \fontspec_gset_family:Nnn \g_@@_mathrm_tl {Renderer=Basic,#1} {#2}
\@@_setmathrm_hook:nn {#1} {#2} % for unicode-math only
}
% \end{macrocode}
% \end{macro}
%
% \begin{macro}{\setboldmathrm}
% \begin{macrocode}
\cs_new:Nn \@@_main_setboldmathrm:nn
{
%<XE> \fontspec_gset_family:Nnn \g_@@_bfmathrm_tl {#1} {#2}
%<LU> \fontspec_gset_family:Nnn \g_@@_bfmathrm_tl {Renderer=Basic,#1} {#2}
\@@_setboldmathrm_hook:nn {#1} {#2} % for unicode-math only
}
% \end{macrocode}
% \end{macro}
%
% \begin{macro}{\setmathsf}
% \begin{macrocode}
\cs_new:Nn \@@_main_setmathsf:nn
{
%<XE> \fontspec_gset_family:Nnn \g_@@_mathsf_tl {#1} {#2}
%<LU> \fontspec_gset_family:Nnn \g_@@_mathsf_tl {Renderer=Basic,#1} {#2}
\@@_setmathsf_hook:nn {#1} {#2} % for unicode-math only
}
% \end{macrocode}
% \end{macro}
%
% \begin{macro}{\setmathtt}
% \begin{macrocode}
\cs_new:Nn \@@_main_setmathtt:nn
{
%<XE> \fontspec_gset_family:Nnn \g_@@_mathtt_tl {#1} {#2}
%<LU> \fontspec_gset_family:Nnn \g_@@_mathtt_tl {Renderer=Basic,#1} {#2}
\@@_setmathtt_hook:nn {#1} {#2} % for unicode-math only
}
% \end{macrocode}
% \end{macro}
%
% Hooks:
% \begin{macrocode}
\cs_set_eq:NN \@@_setmainfont_hook:nn \use_none:nn
\cs_set_eq:NN \@@_setsansfont_hook:nn \use_none:nn
\cs_set_eq:NN \@@_setmonofont_hook:nn \use_none:nn
\cs_set_eq:NN \@@_setmathrm_hook:nn \use_none:nn
\cs_set_eq:NN \@@_setmathsf_hook:nn \use_none:nn
\cs_set_eq:NN \@@_setmathtt_hook:nn \use_none:nn
\cs_set_eq:NN \@@_setboldmathrm_hook:nn \use_none:nn
% \end{macrocode}
%
% Hmm, this isn't necessary with \pkg{unicode-math}; oh well:
% \begin{macrocode}
\@onlypreamble\setmathrm
\@onlypreamble\setboldmathrm
\@onlypreamble\setmathsf
\@onlypreamble\setmathtt
% \end{macrocode}
%
% If the commands above are not executed, then \cmd\rmdefault\ (\etc)
% will be used.
% \begin{macrocode}
\tl_gset:Nn \g_@@_mathrm_tl {\rmdefault}
\tl_gset:Nn \g_@@_mathsf_tl {\sfdefault}
\tl_gset:Nn \g_@@_mathtt_tl {\ttdefault}
% \end{macrocode}
%
% \begin{macro}{\@@_main_newfontfamily:NnnN}
% The inner fontspec workings define a font family, which is then used in a typical
% NFSS \cmd\fontfamily\ declaration, saved in the macro name specified.
% The fourth argument determines which xparse function to set the macro with (new/renew/etc).
% \begin{macrocode}
\cs_new:Nn \@@_main_newfontfamily:NnnN
{
\fontspec_set_family:cnn { l_@@_ \cs_to_str:N #1 _family_tl } {#2} {#3}
\use:x
{
\exp_not:N #4 \exp_not:N #1 {}
{
\exp_not:N \fontfamily { \use:c { l_@@_ \cs_to_str:N #1 _family_tl } }
\exp_not:N \fontencoding { \g_@@_nfss_enc_tl }
\exp_not:N \selectfont
}
}
}
% \end{macrocode}
% \end{macro}
%
% \begin{macro}{\@@_main_newfontface:NnnN}
% \cmd\newfontface\ uses the fact that if the argument to \feat{BoldFont}, etc., is empty (\ie, |BoldFont={}|), then no bold font is searched for.
% \begin{macrocode}
\cs_new:Nn \@@_main_newfontface:NnnN
{
\@@_main_newfontfamily:NnnN #1 { BoldFont={},ItalicFont={},SmallCapsFont={},#2 } {#3} #4
}
% \end{macrocode}
% \end{macro}
%
% \subsection{Font feature selection}
%
% \begin{macro}{\@@_set_default_features:nn}
% \begin{macrocode}
\cs_new:Nn \@@_set_default_features:nn
{
\IfBooleanTF {#1} \clist_gput_right:Nn \clist_gset:Nn
\g_@@_default_fontopts_clist {#2}
}
% \end{macrocode}
% \end{macro}
%
% \begin{macro}{\@@_set_font_default_features:nnn}
% The optional argument |#2| specifies font identifier(s).
% Branch for either (a)~single token input such as \verb|\rmdefault|, or (b)~otherwise assume its a fontname.
% In that case, strip spaces and file extensions and lower-case to ensure consistency.
% \begin{macrocode}
\cs_new:Nn \@@_set_font_default_features:nnn
{
%<debug> \typeout{\unexpanded{_set_font_default_features:nnn:{#1}{#2}{#3}}}
\clist_map_inline:nn {#2}
{
\tl_if_single:nTF {##1}
{ \tl_set:No \l_@@_tmp_tl { \cs:w l_@@_ \cs_to_str:N ##1 _family_tl\cs_end: } }
{ \@@_sanitise_fontname:Nn \l_@@_tmp_tl {##1} }
\IfBooleanTF {#1}
{
\prop_get:NVNF \g_@@_fontopts_prop \l_@@_tmp_tl \l_@@_tmpb_tl
{ \tl_clear:N \l_@@_tmpb_tl }
\tl_put_right:Nn \l_@@_tmpb_tl {#3,}
\prop_gput:NVV \g_@@_fontopts_prop \l_@@_tmp_tl \l_@@_tmpb_tl
}
{
\tl_if_empty:nTF {#3}
{ \prop_gremove:NV \g_@@_fontopts_prop \l_@@_tmp_tl }
{ \prop_gput:NVn \g_@@_fontopts_prop \l_@@_tmp_tl {#3,} }
}
}
}
% \end{macrocode}
% \end{macro}
%
%
%
% \begin{macro}{\addfontfeatures}
% In order to be able to extend the feature selection of
% a given font, two things need to be known: the currently selected
% features, and the currently selected font. Every time a font
% family is created, this information is saved inside a control
% sequence with the name of the font family itself.
%
% This macro extracts this information, then appends the requested
% font features to add to the already existing ones, and calls the
% font again with the top level \cs{fontspec} command.
%
% The default options are \emph{not} applied (which is why
% \cs{g_fontspec_default_fontopts_tl} is emptied inside the group; this is allowed
% as \cmd\l_fontspec_family_tl\ is globally defined in \cmd\@@_select_font_family:nn), so this
% means that the only added features to the font are strictly those
% specified by this command.
%
% \cs{addfontfeature} is defined as an alias, as I found that I
% often typed this instead when adding only a single font feature.
% \begin{macrocode}
\cs_new:Nn \@@_main_addfontfeatures:n
{
%<debug> \typeout{^^J::::::::::::::::::::::::::::::::::^^J: addfontfeatures}
\fontspec_if_fontspec_font:TF
{
\group_begin:
\keys_set_known:nnN {fontspec-addfeatures} {#1} \l_@@_tmp_tl
\prop_get:cnN {g_@@_fontinfo_ \f@family _prop} {options} \l_@@_options_tl
\prop_get:cnN {g_@@_fontinfo_ \f@family _prop} {fontname} \l_@@_fontname_tl
\bool_set_true:N \l_@@_disable_defaults_bool
%<debug> \typeout{ \@@_select_font_family:nn { \l_@@_options_tl , #1 } {\l_@@_fontname_tl} }
\use:x
{
\@@_select_font_family:nn
{ \l_@@_options_tl , #1 } {\l_@@_fontname_tl}
}
\group_end:
\fontfamily \g_@@_nfss_family_tl \selectfont
}
{
\@@_warning:nx {addfontfeatures-ignored} {#1}
}
\ignorespaces
}
% \end{macrocode}
% \end{macro}
%
% \subsection{Defining new font features}
%
% \begin{macro}{\newfontfeature}
% \cs{newfontfeature} takes two arguments: the name of the feature
% tag by which to reference it, and the string that is used to
% select the font feature.
% \begin{macrocode}
\cs_new:Nn \@@_main_newfontfeature:nn
{
\keys_define:nn { fontspec }
{
#1 .code:n = { \@@_update_featstr:n {#2} }
}
}
% \end{macrocode}
% \end{macro}
%
%
% \begin{macro}{\newAATfeature}
% This command assigns a new AAT feature by its code (|#2|,|#3|) to a new name (|#1|).
% Better than \cmd\newfontfeature\ because it checks if the feature exists in the
% font it's being used for.
% \begin{macrocode}
\cs_new:Nn \@@_main_newAATfeature:nnnn
{
\keys_if_exist:nnF { fontspec } {#1}
{ \@@_define_aat_feature_group:n {#1} }
\keys_if_choice_exist:nnnT {fontspec} {#1} {#2}
{ \@@_warning:nxx {feature-option-overwrite} {#1} {#2} }
\@@_define_aat_feature:nnnn {#1}{#2}{#3}{#4}
}
% \end{macrocode}
% \end{macro}
%
% \begin{macro}{\newopentypefeature}
% This command assigns a new OpenType feature by its abbreviation (|#2|) to a new name (|#1|).
% Better than \cmd\newfontfeature\ because it checks if the feature exists in the
% font it's being used for.
% \begin{macrocode}
\cs_new:Nn \@@_main_newopentypefeature:nnn
{
\keys_if_exist:nnF { fontspec / options } {#1}
{ \@@_define_opentype_feature_group:n {#1} }
\keys_if_choice_exist:nnnT {fontspec} {#1} {#2}
{ \@@_warning:nxx {feature-option-overwrite} {#1} {#2} }
\exp_args:Nnnx \@@_define_opentype_feature:nnnnn
{#1} {#2} { \@@_strip_plus_minus:n {#3} } {#3} {}
}
% \end{macrocode}
%
% \begin{macrocode}
\cs_new:Nn \@@_strip_plus_minus:n { \@@_strip_plus_minus_aux:Nq #1 \q_nil }
\cs_new:Npn \@@_strip_plus_minus_aux:Nq #1#2 \q_nil
{
\str_case:nnF {#1} { {+} {#2} {-} {#2} } {#1#2}
}
% \end{macrocode}
% \end{macro}
%
%
%
% \begin{macro}{\aliasfontfeature}
% User commands for renaming font features and font feature options.
% \begin{macrocode}
\cs_new:Nn \@@_main_aliasfontfeature:nn
{
%<debug> \typeout{::::::::::::::::::::^^J:: aliasfontfeature{#1}{#2}}
\bool_set_false:N \l_@@_alias_bool
\clist_map_inline:Nn \g_@@_all_keyval_modules_clist
{
\keys_if_exist:nnT {##1} {#1}
{
%<debug> \typeout{:::: Key~exists~##1~/~#1}
\bool_set_true:N \l_@@_alias_bool
\keys_define:nn {##1}
{ #2 .code:n = { \keys_set:nn {##1} { #1 = {####1} } } }
}
}
\bool_if:NF \l_@@_alias_bool
{ \@@_warning:nx {rename-feature-not-exist} {#1} }
}
% \end{macrocode}
% \end{macro}
%
% \begin{macro}{\aliasfontfeatureoption}
% \begin{macrocode}
\cs_new:Nn \@@_main_aliasfontfeatureoption:nnn
{
\bool_set_false:N \l_@@_alias_bool
\clist_map_inline:Nn \g_@@_all_keyval_modules_clist
{
\keys_if_exist:nnT { ##1 / #1 } {#2}
{
%<debug> \typeout{:::: Keyval~exists~##1~/~#1~=~#2}
\bool_set_true:N \l_@@_alias_bool
\keys_define:nn { ##1 / #1 }
{ #3 .code:n = { \keys_set:nn {##1} { #1 = {#2} } } }
}
\keys_if_exist:nnT { ##1 / #1 } {#2Reset}
{
%<debug> \typeout{:::: Keyval~exists~##1~/~#1~=~#2Reset}
\keys_define:nn { ##1 / #1 }
{ #3Reset .code:n = { \keys_set:nn {##1} { #1 = {#2Reset} } } }
}
\keys_if_exist:nnT { ##1 / #1 } {#2Off}
{
%<debug> \typeout{:::: Keyval~exists~##1~/~#1~=~#2Off}
\keys_define:nn { ##1 / #1 }
{ #3Off .code:n = { \keys_set:nn {##1} { #1 = {#2Off} } } }
}
}
\bool_if:NF \l_@@_alias_bool
{ \@@_warning:nx {rename-feature-not-exist} {#1/#2} }
}
% \end{macrocode}
% \end{macro}
%
%
% \begin{macro}{\@@_main_DeclareFontExtensions:n}
% \begin{macrocode}
\cs_new:Nn \@@_main_DeclareFontExtensions:n
{
\clist_set:Nn \l_@@_extensions_clist { #1 }
}
% \end{macrocode}
% Defaults:
% \begin{macrocode}
\@@_main_DeclareFontExtensions:n {.otf,.ttf,.OTF,.TTF,.ttc,.TTC,.dfont}
% \end{macrocode}
% \end{macro}
%
%
% \subsection{High level conditionals}
%
%
% \begin{macro}{\IfFontFeatureActiveTF}
% \begin{macrocode}
\cs_new:Nn \@@_main_IfFontFeatureActiveTF:nnn
{
%<debug> \typeout{^^J:::::::::::::::::::::::::::::::::::::::::::::::}
%<debug> \typeout{:IfFontFeatureActiveTF \exp_not:n{{#1}{#2}{#3}}}
\@@_if_font_feature:nTF {#1} {#2} {#3}
}
% \end{macrocode}
%
% \begin{macrocode}
\prg_new_conditional:Nnn \@@_if_font_feature:n {TF}
{
\tl_gclear:N \g_@@_single_feat_tl
\group_begin:
\@@_font_suppress_not_found_error:
\@@_init:
\bool_set_true:N \l_@@_ot_bool
\bool_set_true:N \l_@@_never_check_bool
\bool_set_false:N \l_@@_firsttime_bool
\clist_clear:N \l_@@_fontfeat_clist
\@@_get_features:n {#1}
\group_end:
%<debug> \typeout{:::> \exp_not:N\g_@@_rawfeatures_sclist->~{\g_@@_rawfeatures_sclist}}
%<debug> \typeout{:::> \exp_not:N\g_@@_single_feat_tl->~{\g_@@_single_feat_tl}}
\tl_if_empty:NTF \g_@@_single_feat_tl { \prg_return_false: }
{
\exp_args:NV \fontspec_if_current_feature:nTF \g_@@_single_feat_tl
{ \prg_return_true: } { \prg_return_false: }
}
}
% \end{macrocode}
% \end{macro}
%
%
% \subsection{\cs{oldstylenums} and \cs{liningnums}}
%
% \begin{macro}{\oldstylenums}
% \begin{macro}{\liningnums}
% This command needs a redefinition.
% And we may as well provide the reverse command.
% \begin{macrocode}
\cs_new_protected:Nn \@@_main_oldstylenums:n
{
\group_begin:
\addfontfeature{Numbers=OldStyle}
#1
\group_end:
}
\cs_new_protected:Nn \@@_main_liningnums:n
{
\group_begin:
\addfontfeature{Numbers=Lining}
#1
\group_end:
}
% \end{macrocode}
% \end{macro}
% \end{macro}
%
%
%
% \iffalse
% \begin{macrocode}
%</fontspec>
% \end{macrocode}
% \fi
\endinput
% /��
% ------------------------------------------------
% The FONTSPEC package <latex3.github.io/fontspec>
% ------------------------------------------------
% Copyright 2022-2024 The LaTeX project, LPPL "maintainer"
% Copyright 2004-2022 Will Robertson
% Copyright 2009-2015 Khaled Hosny
% Copyright 2013 Philipp Gesang
% Copyright 2013-2016 Joseph Wright
% ------------------------------------------------
% This package is free software and may be redistributed and/or modified under
% the conditions of the LaTeX Project Public License, version 1.3c or higher
% (your choice): <http://www.latex-project.org/lppl/>.
% ------------------------------------------------
% ��/