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kanbun.sty
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kanbun.sty
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%% Copyright 2022 Yuanhao Chen
%
% This work may be distributed and/or modified under the
% conditions of the LaTeX Project Public License, either version 1.3
% of this license or (at your option) any later version.
% The latest version of this license is in
% http://www.latex-project.org/lppl.txt
% and version 1.3 or later is part of all distributions of LaTeX
% version 2005/12/01 or later.
%
% This work has the LPPL maintenance status `maintained'.
%
% The Current Maintainer of this work is Yuanhao Chen.
%
% This work consists of the files kanbun.sty, kanbun.lua,
% kanbun-example.tex and kanbun.tex.
%
\NeedsTeXFormat{LaTeX2e}[2021/06/01]
\RequirePackage{expl3,xparse,l3keys2e,ifluatex}
\ProvidesExplClass{kanbun}
{2022/2/13} {1.2} {漢文の訓点文の組版}
\ExplSyntaxOn
\cs_generate_variant:Nn \str_if_eq:nnTF { V }
\cs_generate_variant:Nn \str_case:nnTF { V }
\cs_generate_variant:Nn \str_case:nnTF { f }
% vars used in options
\@ifpackageloaded{luatexja-fontspec}{
\tl_set:Nn \kanbun_rubyfontcmd_default { \addjfontfeatures{RawFeature={+ruby}} }
\tl_set:Nn \kanbun_fontcmd_default { \addjfontfeatures{RawFeature={+trad}} }
}{
\tl_set:Nn \kanbun_rubyfontcmd_default {}
\tl_set:Nn \kanbun_fontcmd_default {}
}
% options
\keys_define:nn { kanbun }
{
, scale .fp_set:N = \kanbun_scale
, scale .initial:n = { 2 }
, fontcmd .tl_set:N = \kanbun_fontcmd
, fontcmd .initial:n = \kanbun_fontcmd_default
, rubyfontcmd .tl_set:N = \kanbun_rubyfontcmd
, rubyfontcmd .initial:n = \kanbun_rubyfontcmd_default
, unit .dim_set:N = \kanbun_zw
, unit .initial:n = { 1em }
, yokoaki .fp_set:N = \kanbun_yokoaki
, yokoaki .initial:n = { 2 }
, tateaki .fp_set:N = \kanbun_tateaki
, tateaki .initial:n = { 2 }
, okuriintrusion .fp_set:N = \kanbun_okuriintrusion
, okuriintrusion .initial:n = { 1 }
, kumi .str_set:N = \kanbun_kumi
, kumi .initial:n = { aki }
, aki .code:n = \keys_set:nn { kanbun } { kumi = aki }
, beta .code:n = \keys_set:nn { kanbun } { kumi = beta }
}
\ProcessKeysOptions { kanbun }
\DeclareDocumentCommand \setkanbun { m } {
\keys_set:nn { kanbun } { #1 }
}
% other vars
\tl_set:Nn \kanbun_rubyfontsize_rubyfontcmd { \kanbun_rubyfontcmd\fontsize{\fp_eval:n {1/\kanbun_scale}\kanbun_zw}{0pt}\selectfont }
\newlength{\kanbun_furilen}
\newlength{\kanbun_okurilen}
\newlength{\kanbun_furiokuri_firstline_len}
\int_new:N \kanbun_furiokuri_firstline_start_index
\tl_set:Nn \kanbun_tateten_width { 1/30 }
\tl_set:Nn \kanbunzwtosp { \fp_eval:n { \dim_ratio:nn { 1 \kanbun_zw } { 1 sp } } }
\tl_set:Nn \kanbun_unit_glue {
\str_if_eq:VnTF \kanbun_kumi { aki } {
\penalty0
}
{
\hskip 0\kanbun_zw plus 0.25\kanbun_zw minus 0\kanbun_zw
}
}
\tl_set:Nn \kanbun_punct_glue {
\hskip 0\kanbun_zw plus 0.5\kanbun_zw minus 0\kanbun_zw
}
% \kanjiunit and other macros to be used in a \kanjiunit
\NewDocumentCommand { \kanbun_ensure_height } { m m }
{
\vbox to #1{\vss{#2}\vss}
}
\newbox\kanbun_current_kanjiunit
\NewDocumentCommand { \kanjiunit } { m m m m m m }
{
\tl_set:Nn \ninojiten_punct {}
\tl_set:Nn \right_punct {}
\tl_set:Nn \central_punct {}
\process_punct{ #4 }
\tl_set:Nn \kanbun_central_punct_box {
\kanbun_ensure_height{\kanbun_zw} {
\str_if_eq:VnTF \kanbun_kumi { aki }
{
\hbox{\kern \kanbun_zw{\hbox to \fp_eval:n { \kanbun_tateaki/\kanbun_scale }\kanbun_zw{\hss{\central_punct}\hss}}}
}
{
\hbox{\kern \kanbun_zw{\central_punct}}
}
}
}
\tl_set:Nn \kanbun_left_punct_phantom {
\kanbun_ensure_height{\kanbun_zw} {
\str_if_eq:VnTF \kanbun_kumi { aki } { }
{
\str_if_eq:nnTF { #2 } { } { } {
\hbox{\phantom{\hbox to 0.5\kanbun_zw{\hss#2\hfil}}}
}
}
}
}
\tl_set:Nn \kanbun_right_punct_box {
\kanbun_ensure_height{\kanbun_zw} {
\vfill % make sure punct stay on baseline in yoko direction (xeCJK)
\str_if_eq:VnTF \right_punct { } { } {
\hbox{
\kern \kanbun_zw
\bool_if:NTF \kanbun_first_right_punct_is_kagi {
\phantom{ \kanbun_rubyfontsize_rubyfontcmd\kaeriten{#5} }
} { }
\right_punct
}
}
}
}
%
\tl_set:Nn \unit_content {
\kanbun_left_punct_phantom % compensate for width of left punct
\vbox{
\bool_set_true:N \kanbun_is_right_kana
\kanbun_ensure_height{ 0pt }{\hbox{\kanbun_rubyfontsize_rubyfontcmd{#1}}} % right kana
\nointerlineskip %
\vspace*{\fp_eval:n { 0.5/\kanbun_scale }\kanbun_zw}
\kanbun_ensure_height{\kanbun_zw}{\llap{#2}} % left punct
\nointerlineskip %
\vspace*{-1 \kanbun_zw}
\kanbun_ensure_height{\kanbun_zw}{
\hbox to \kanbun_zw{\hss{#3}\hss}
} % kanji
\nointerlineskip %
\vspace*{-1 \kanbun_zw}
\kanbun_ensure_height{\fp_eval:n { 1/\kanbun_scale }\kanbun_zw}{\hbox{\kern \kanbun_zw{\ninojiten_punct}}} % ninojiten
\nointerlineskip %
\vspace*{\fp_eval:n { -1/\kanbun_scale }\kanbun_zw}
\kanbun_right_punct_box % right punct
\nointerlineskip %
\vspace*{-\kanbun_zw}
\kanbun_central_punct_box % central punct
\nointerlineskip %
\vspace*{ \fp_eval:n { -1/\kanbun_scale }\kanbun_zw }
\kanbun_ensure_height{\fp_eval:n { 1/\kanbun_scale }\kanbun_zw}{\hbox{\kanbun_rubyfontsize_rubyfontcmd\kern \kanbun_zw{\kaeriten{#5}}}} % kaeriten
\nointerlineskip %
\vspace*{\fp_eval:n { 0.5/\kanbun_scale }\kanbun_zw}
\bool_set_false:N \kanbun_is_right_kana
\kanbun_ensure_height{ 0pt }{\hbox{\kanbun_rubyfontsize_rubyfontcmd{#6}}} % left kana
}
}
\str_if_eq:VnTF \kanbun_kumi { aki } {
\setbox\kanbun_current_kanjiunit \hbox to \kanbun_zw{ \unit_content \hss}
}{
\setbox\kanbun_current_kanjiunit \hbox{ \unit_content }
}
%
% output
\str_if_eq:VnTF \kanbun_kumi { aki } { }
{
\str_if_eq:nnTF { #2 } { } { } {
\kanbun_punct_glue
}
}
\nobreak
\str_if_eq:VnTF \kanbun_kumi { aki }
{
\usebox\kanbun_current_kanjiunit
\hskip\fp_eval:n { \kanbun_tateaki/\kanbun_scale }\kanbun_zw
}
{
\discretionary{
\usebox\kanbun_current_kanjiunit
\kern\dim_eval:n { \kanbun_zw - \box_wd:N \kanbun_current_kanjiunit }
}{
%
}{
\usebox\kanbun_current_kanjiunit
}
}
\nobreak
\str_if_eq:VnTF \kanbun_kumi { aki } { }
{
\str_if_eq:VnTF \right_punct { } { } {
\kanbun_punct_glue
}
}
\nobreak
\kanbun_unit_glue
}
\cs_new:Nn \kanbun_dim_to_fp_and_round:n {
\fp_eval:n { round( \dim_to_fp:n { #1 }, 0 ) }
}
\cs_new:Nn \kanbun_typeset_normal_kana:nn {
\dim_compare:nNnTF { \kanbun_furilen } < { \fp_eval:n { 1-\kanbun_okuriintrusion/\kanbun_scale }\kanbun_zw }
{ \makebox[\fp_eval:n { 1-\kanbun_okuriintrusion/\kanbun_scale }\kanbun_zw][l]{ #1 } }
{ #1 }
#2
}
\cs_new:Nn \kanbun_typeset_long_kana_by_raising_okurigana:nn {
\makebox[ \dim_eval:n { \fp_eval:n { 1 + \kanbun_tateaki / \kanbun_scale }\kanbun_zw - \kanbun_okurilen } ][l]{ #1 }
#2
}
\cs_new:Nn \kanbun_typeset_long_kana:n {
\str_set:Nn \kanbun_furiokuri_all { #1 }
\int_set:Nn \kanbun_furiokuri_firstline_start_index { -1 }
\settowidth{ \kanbun_furiokuri_firstline_len }{ }
%
\fp_while_do:nn {
\kanbun_dim_to_fp_and_round:n { \kanbun_furiokuri_firstline_len } < \kanbun_dim_to_fp_and_round:n { \fp_eval:n { (\kanbun_okuriintrusion + \kanbun_tateaki) / \kanbun_scale }\kanbun_zw }
% \kanbun_dim_to_fp_and_round:n { \kanbun_furiokuri_firstline_len } < \kanbun_dim_to_fp_and_round:n { ( \kanbun_furilen + \kanbun_okurilen ) / 2 }
} {
\int_decr:N \kanbun_furiokuri_firstline_start_index
\settowidth{ \kanbun_furiokuri_firstline_len }{ \str_range:Nnn \kanbun_furiokuri_all { \kanbun_furiokuri_firstline_start_index } { -1 } }
}
% output
\rlap{\raisebox{ \bool_if:NTF \kanbun_is_right_kana { } { - } \fp_eval:n { 1 / \kanbun_scale }\kanbun_zw }[0pt][0pt]{
\kern \fp_eval:n { .5/\kanbun_scale }\kanbun_zw
\kern \fp_to_dim:n { min( 0, \kanbun_dim_to_fp_and_round:n { \fp_eval:n { 2 * (\kanbun_okuriintrusion + \kanbun_tateaki) / \kanbun_scale }\kanbun_zw - \kanbun_furilen - \kanbun_okurilen } ) }
\str_range:Nnn \kanbun_furiokuri_all { 1 } { \kanbun_furiokuri_firstline_start_index - 1 }
}}
\kern \fp_eval:n { 1-\kanbun_okuriintrusion/\kanbun_scale }\kanbun_zw \str_range:Nnn \kanbun_furiokuri_all { \kanbun_furiokuri_firstline_start_index } { -1 }
}
\NewDocumentCommand { \furiokuri } { m m }
{
\settowidth{ \kanbun_furilen }{ #1 }
\settowidth{ \kanbun_okurilen }{ #2 }
\str_if_eq:VnTF \kanbun_kumi { aki }
{
\fp_compare:nTF { \kanbun_dim_to_fp_and_round:n { \kanbun_furilen + \kanbun_okurilen } > \kanbun_dim_to_fp_and_round:n {\fp_eval:n { 1 + \kanbun_tateaki / \kanbun_scale }\kanbun_zw} } {
\kanbun_typeset_long_kana:n { #1 #2 }
} {
\fp_compare:nTF { \kanbun_dim_to_fp_and_round:n { \kanbun_okurilen } >= \kanbun_dim_to_fp_and_round:n { \fp_eval:n { (\kanbun_okuriintrusion + \kanbun_tateaki) / \kanbun_scale }\kanbun_zw } } {
\fp_compare:nTF { \kanbun_dim_to_fp_and_round:n { \kanbun_okurilen } <= \kanbun_dim_to_fp_and_round:n { \fp_eval:n { 1 + (\kanbun_tateaki - 1) / \kanbun_scale }\kanbun_zw } } {
\kanbun_typeset_long_kana_by_raising_okurigana:nn { #1 } { #2 }
} {
\kanbun_typeset_long_kana:n { #1 #2 }
}
} {
\kanbun_typeset_normal_kana:nn { #1 } { #2 }
}
}
}
{
\kanbun_typeset_normal_kana:nn { #1 } { #2 }
}
}
\NewDocumentCommand { \kaeriten } { m }
{
\tl_set:Nn \kaeriten_output { #1 }
\sys_if_engine_xetex:TF {} {
\platex_if_direction_tate:TF {
\str_case:VnTF \kaeriten_output {
{ 一レ } { \tl_set:Nn \kaeriten_output { \kern \fp_eval:n {-0.25/\kanbun_scale}\kanbun_zw 一\kern \fp_eval:n {-0.75/\kanbun_scale}\kanbun_zw レ } }
{ 甲レ } { \tl_set:Nn \kaeriten_output { 甲\kern \fp_eval:n {-0.25/\kanbun_scale}\kanbun_zw レ } }
{ 上レ } { \tl_set:Nn \kaeriten_output { 上\kern \fp_eval:n {-0.25/\kanbun_scale}\kanbun_zw レ } }
{ 天レ } { \tl_set:Nn \kaeriten_output { 天\kern \fp_eval:n {-0.25/\kanbun_scale}\kanbun_zw レ } }
} {} {}
} {}
}
\tl_use:N \kaeriten_output
}
\NewDocumentCommand { \process_punct_map } { m } {
\str_case:nnTF { #1 } {
{ — } { \tl_put_right:Nn \central_punct { \tateten } }
{ ― } { \tl_put_right:Nn \central_punct { \tateten } }
{ ㆐ } { \tl_put_right:Nn \central_punct { \tateten } }
% { ： } { \tl_put_right:Nn \central_punct { \hbox to \kanbun_zw{\hss{：}\hss} } }
% { ・ } { \tl_put_right:Nn \central_punct { \hbox to \kanbun_zw{\hss{・}\hss} } }
{ ： } { \tl_put_right:Nn \right_punct { \hbox to 0.5\kanbun_zw{\hss{：}\hss} } }
{ ・ } { \tl_put_right:Nn \right_punct { \hbox to 0.5\kanbun_zw{\hss{・}\hss} } }
{ … } { \tl_put_right:Nn \central_punct { \hbox to \kanbun_zw{\hss{…}\hss} } }
{ ！ } { \tl_put_right:Nn \central_punct { \hbox to \kanbun_zw{\hss{！}\hss} } }
{ ？ } { \tl_put_right:Nn \central_punct { \hbox to \kanbun_zw{\hss{？}\hss} } }
{ 〻 } {
\tl_put_right:Nn \ninojiten_punct { \ninojiten }
\tl_put_right:Nn \right_punct { \phantom{\ninojiten} }
}
} {} {
\tl_put_right:Nn \right_punct { \hbox to 0.5\kanbun_zw{\hfil#1\hss} }
}
}
% \bool_new:N
\NewDocumentCommand { \process_punct } { m }
{
\bool_set_false:N \kanbun_first_right_punct_is_kagi
\str_case:fnTF { \str_range:nnn { #1 } { 1 } { 1 } } {
{ 」 } { \bool_set_true:N \kanbun_first_right_punct_is_kagi }
{ 』 } { \bool_set_true:N \kanbun_first_right_punct_is_kagi }
} { } { }
\str_map_function:nN { #1 } \process_punct_map
}
\NewDocumentCommand { \multifuriokuri } { O{2\kanbun_zw} m m }
{
\kanbun_rubyfontcmd
\kern \fp_eval:n { -(#1) }\kanbun_zw
\makebox[\fp_eval:n { (#1) + 1 - \kanbun_okuriintrusion/\kanbun_scale }\kanbun_zw][s]{#2}
#3
}
% these commands are used as punct
\NewDocumentCommand { \tateten } {}
{
\str_if_eq:VnTF \kanbun_kumi { aki } {
\makebox[\fp_eval:n {\kanbun_tateaki/\kanbun_scale}\kanbun_zw][c]{
\rule[\fp_eval:n {-\kanbun_tateten_width/2}\kanbun_zw]{\fp_eval:n {\kanbun_tateaki/\kanbun_scale}\kanbun_zw}{\fp_eval:n {\kanbun_tateten_width}\kanbun_zw}
}
}{
\makebox[\fp_eval:n {1/\kanbun_scale}\kanbun_zw][c]{
\rule[\fp_eval:n {-\kanbun_tateten_width/2}\kanbun_zw]{\fp_eval:n {1/\kanbun_scale}\kanbun_zw}{\fp_eval:n {\kanbun_tateten_width}\kanbun_zw}
}
}
}
\NewDocumentCommand { \ninojiten } {}
{ \kanbun_rubyfontsize_rubyfontcmd 〻 }
% corrects fontsize of ruby base
% \NewDocumentCommand { \kanbunfont } {} { \parindent=0pt\kanbun_fontcmd\fontsize{\kanbun_zw}{\fp_eval:n {1+\kanbun_yokoaki/\kanbun_scale}\kanbun_zw}\selectfont}
\NewDocumentCommand { \kanbunfont } {} { \kanbun_fontcmd\fontsize{\kanbun_zw}{\fp_eval:n {1+\kanbun_yokoaki/\kanbun_scale}\kanbun_zw}\selectfont}
\NewDocumentEnvironment { kanjipar } { +b }
{
{
\kanbunfont
#1
\par
}
} {}
% for LuaLaTeX to parse Kanbun annotation
\NewDocumentCommand{\matchkana}{ m }{
\regex_set:Nn \c_kana_regex {[\x{3040}-\x{30FA}\x{30FC}-\x{30FF}\x{31F0}-\x{31FF}\x{FF66}-\x{FF9F}\x{1B100}-\x{1B122}\x{1AFF0}-\x{1AFFF}\x{1B000}-\x{1B0FF}\x{1B130}-\x{1B16F}]}
\regex_match:NnTF \c_kana_regex { #1 } { \bool_set_true:N \g_kana_bool } { \bool_set_false:N \g_kana_bool }
}
%
\ExplSyntaxOff
%
\ifluatex
% verbatim reader adapted from https://tex.stackexchange.com/a/361759
\directlua{
verb_table = {}
function store_lines (str)
if string.find (str , "\noexpand\\EndKanbun" ) then
luatexbase.remove_from_callback (
"process_input_buffer" , "store_lines")
return "\\newif\\ifcontinue\\continuetrue\\directlua { co = coroutine.create(main_loop) }\\loop\\directlua{ ok,b=coroutine.resume(co) tex.sprint(b) }\\ifcontinue\\repeat"
else
table.insert(verb_table, str)
end
return ""
end
function register_verbatim ()
verb_table = {}
luatexbase.add_to_callback(
"process_input_buffer" , store_lines , "store_lines")
end
% require main loop
kanbunzwtosp = \luaescapestring{\kanbunzwtosp}
require("kanbun.lua")
}
\def\Kanbun{\directlua{register_verbatim()}}
\def\createcatcodes{%
\bgroup%
\catcode`\\=12 \catcode`\{=12 \catcode`\}=12%
\catcode`\$=12 \catcode`\&=12 \catcode`\^^M=13%
\catcode`\#=12 \catcode`\^=12 \catcode`\_=12%
\catcode`\ =13 \catcode`\~=12 \catcode`\%=12%
\savecatcodetable 1%
\egroup%
}
\createcatcodes
\bgroup%
\catcode`\^^M=13\gdef^^M{\quitvmode\par}%
\catcode`\ = 13\gdef {\quitvmode\Space}%
\egroup%
\def\Space{ }
%
\fi