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internetmodes.code.tex
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internetmodes.code.tex
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%% Mode handling (heavily based on beamer)
\ProvidesExplFile{internetmodes.code.tex}{2021-12-14}{}{Mode control}
\bool_new:N \l__txt_text_bool
\bool_new:N \l__imode_invert_bool
\DeclareDocumentCommand \imode {s}
{
\IfBooleanTF {#1}
{
\bool_set_true:N \l__imode_invert_bool
}
{
\bool_set_false:N \l__imode_invert_bool
}
\txt_imode_check_active:
}
\cs_new_protected_nopar:Npx \txt_imode_check_active:
{
\peek_catcode_ignore_spaces:NTF \c_catcode_active_tl
{
\exp_not:N \txt_imode_active:w
}
{
\exp_not:N \txt_imode_inactive:w
}
}
\group_begin:
\char_set_catcode_active:N <
\char_set_catcode_active:N >
\cs_new:Npn \txt_imode_active:w <#1>
{
\txt_imode_cases:n {#1}
}
\group_end:
\cs_new:Npn \txt_imode_inactive:w <#1>
{
\txt_imode_cases:n {#1}
}
\cs_new:Npn \txt_imode_cases:n #1
{
\peek_catcode_ignore_spaces:NTF \c_group_begin_token
{
\txt_mode_inline:nn {#1}
}
{
\txt_mode_switch:n {#1}
}
}
\cs_new:Npn \txt_mode_inline:nn #1#2
{
\bool_if:NTF \l__imode_invert_bool
{
\txt_if_is_mode:nF
}
{
\txt_if_is_mode:nT
}
{#1}{#2}
}
\prg_new_conditional:Npnn \txt_if_is_mode:n #1 {T,F,TF}
{
\clist_if_in:nnTF {#1} {all}
{
\prg_return_true:
}
{
\clist_if_in:nVTF {#1} \l__txt_out_tl
{
\prg_return_true:
}
{
\bool_if:NTF \l__txt_text_bool
{
\clist_if_in:nnTF {#1} {text}
{
\prg_return_true:
}
{
\prg_return_false:
}
}
{
\clist_if_in:nnTF {#1} {doc}
{
\prg_return_true:
}
{
\prg_return_false:
}
}
}
}
}
\cs_new:Npn \txt_mode_switch:n #1
{
\bool_if:NTF \l__imode_invert_bool
{
\txt_if_is_mode:nT
}
{
\txt_if_is_mode:nF
}
{#1}
{
\group_begin:
\char_set_catcode_other:N \^^M
\endlinechar`\^^M
\txt_process_line:w
}
}
\tl_new:N \l__txt_docstart_tl
\tl_new:N \l__txt_docstop_tl
\tl_new:N \l__txt_modestop_tl
\tl_set:Nn \l__txt_modestop_tl {\imode}
\tl_set:Nn \l__txt_docstart_tl {\begin{document}}
\tl_set:Nn \l__txt_docstop_tl {\end{document}}
\cs_generate_variant:Nn \tl_if_eq:nnTF {V}
\group_begin:
\char_set_catcode_other:N \^^M%
\endlinechar=-1%
\cs_new:Npn \txt_process_line:w #1^^M%
{%
\tl_if_eq:VnTF \l__txt_modestop_tl {#1}%
{%
\group_end:
\imode
}%
{%
\tl_if_eq:VnTF \l__txt_docstop_tl {#1}%
{%
\group_end:\end{document}%
}%
{%
\tl_if_eq:VnTF \l__txt_docstart_tl {#1}%
{%
\group_end:\begin{document}%
}%
{%
\txt_process_line:w%
}%
}%
}%
}%
\group_end:
\endinput
% Local Variables:
% mode: latex3
% End: