%
% Copyright (C) 2021-2024 by Qu Yi <toquyi@163.com>
%
% This work may be distributed and/or modified under the
% conditions of the LaTeX Project Public License, either
% version 1.3c 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'.
%<class|package>\NeedsTeXFormat{LaTeX2e}[2021/11/15]
%<*class>
\ProvidesExplClass{easybook}{2024/12/12}{2024ht}
  {Easily typesetting Chinese theses or books}

\bool_new:N \l__eb_compile_draft_bool
\bool_new:N \l__eb_title_newline_bool
\bool_set_true:N \l__eb_class_mode_book_bool
\clist_new:N \g__eb_doc_options_clist
\cs_new_protected:Npn \eb_put_ctexbook:n #1
  { \PassOptionsToClass{#1}{ctexbook} }
\cs_generate_variant:Nn \eb_put_ctexbook:n { V }

\keys_define:nn { easybook }
  {
    newline .code:n         = \bool_set_true:N \l__eb_title_newline_bool,
    scheme .code:n          = \eb_put_ctexbook:n { scheme = {#1} },
    enmode .meta:n          = { newline,scheme = plain },
    font .choices:nn        =
      { noto,times,times*,ebgaramond,libertine,palatino,auto }
      { \tl_set:Nn \l__eb_font_value_tl {#1} },
    font .value_required:n  = true,
    font .initial:n         = auto,
    cjkfont .code:n         = \eb_put_ctexbook:n { fontset = #1 },
    mathfont .tl_set:N      = \l__eb_mathfont_value_tl,
    mathfont .initial:n     = times,
    configs .clist_gset:N   = \g__eb_configs_file_clist,
    paper .code:n           = { },
    class.code:n            = { },
    floatpage.code:n        = { },
    theorem .code:n         = { },
    chem .code:n            = { },
    unknown .code:n = \clist_gput_right:NV \g__eb_doc_options_clist \CurrentOption
  }

\cs_if_exist:NTF \ProcessKeyOptions
  { \ProcessKeyOptions[easybook] }
  {
    \RequirePackage{l3keys2e}
    \ProcessKeysOptions{easybook}
  }
\PassOptionsToPackage{no-math,quiet,CJKmath}{xeCJK}
\eb_put_ctexbook:V \g__eb_doc_options_clist
\LoadClass[UTF8]{ctexbook}

\RequirePackage{easybase}
\ctex_at_end_preamble:n
  {
    \use:c { eb@font@load@\l__eb_font_value_tl }
    \clist_if_empty:NF \g__eb_configs_file_clist
      { \clist_map_function:NN \g__eb_configs_file_clist \file_input:n }
  }

\sys_if_engine_xetex:TF
  {
    \cs_new_eq:NN \eb_set_family:nnn \xeCJK_set_family:nnn
    \cs_new_eq:NN \eb_switch_family:n \xeCJK_switch_family:n
  }
  {
    \cs_new_eq:NN \eb_set_family:nnn \ctex_ltj_set_family:nnn
    \cs_new_eq:NN \eb_switch_family:n \ctex_ltj_switch_family:n
  }
\cs_generate_variant:Nn \eb_set_family:nnn { x }
\cs_new_protected:Npn \eb_setmainfont:nn #1#2
  { \__fontspec_main_setmainfont:nn {#2} {#1} }
\cs_new_protected:Npn \eb_setsansfont:nn #1#2
  { \__fontspec_main_setsansfont:nn {#2} {#1} }
\cs_new_protected:Npn \eb_setmonofont:nn #1#2
  { \__fontspec_main_setmonofont:nn {#2} {#1} }
\cs_new_protected:Npn \eb_setCJKmainfont:nn #1#2
  { \eb_set_family:xnn { \CJKrmdefault } {#2} {#1} }
\cs_new_protected:Npn \eb_setCJKsansfont:nn #1#2
  { \eb_set_family:xnn { \CJKsfdefault } {#2} {#1} }
\cs_new_protected:Npn \eb_setCJKmonofont:nn #1#2
  { \eb_set_family:xnn { \CJKttdefault } {#2} {#1} }
\clist_map_inline:nn
  { main,sans,mono,CJKmain,CJKsans,CJKmono }
  {
    \exp_args:Nc \RenewDocumentCommand { set#1font }{O{}mO{}}
      {\use:c { eb_set#1font:nn } {##2} { ##1,##3 }}
  }
\RenewDocumentCommand{\newCJKfontfamily}{omO{}mO{}}
  {
    \tl_set:Nx \l_tmpa_tl { \tl_if_novalue:nTF {#1} { \cs_to_str:N #2 } {#1} }
    \cs_new_protected:Npx #2 { \eb_switch_family:n { \l_tmpa_tl } }
    \eb_set_family:xnn { \l_tmpa_tl } { #3,#5 } {#4}
  }

\cs_new_protected:Npn \eb@font@load@noto
  {
    \eb_setmainfont:nn { NotoSerif }
      {
        Extension   = .ttf,
        UprightFont = *-Regular,
        BoldFont    = *-Bold,
        ItalicFont  = *-Italic
      }
    \eb_setsansfont:nn { NotoSans }
      {
        Extension   = .ttf,
        UprightFont = *-Regular,
        BoldFont    = *-Bold,
        ItalicFont  = *-Italic
      }
    \eb_setmonofont:nn { NotoSansMono }
      {
        Extension   = .ttf,
        UprightFont = *-Regular,
        BoldFont    = *-Bold
      }
  }
\cs_new_protected:Npn \eb@font@load@times
  {
    \eb_setmainfont:nn { XITS }
      {
        Extension       = .otf,
        UprightFont     = *-regular,
        BoldFont        = *-bold,
        ItalicFont      = *-italic,
        BoldItalicFont  = *-bolditalic
      }
    \eb_setsansfont:nn { texgyreheros }
      {
        Extension       = .otf,
        UprightFont     = *-regular,
        BoldFont        = *-bold,
        ItalicFont      = *-italic,
        BoldItalicFont  = *-bolditalic
      }
    \eb_setmonofont:nn { texgyrecursor }
      {
        Extension       = .otf,
        UprightFont     = *-regular,
        BoldFont        = *-bold,
        ItalicFont      = *-italic,
        BoldItalicFont  = *-bolditalic,
        Ligatures       = CommonOff
      }
  }
\cs_new_protected:cpn { eb@font@load@times* }
  {
    \eb_setmainfont:nn { Times~New~Roman } { }
    \eb_setsansfont:nn { Arial } { }
    \eb_setmonofont:nn { Courier~New } { }
  }
\cs_new_protected:Npn \eb@font@load@libertinus@sans
  {
    \eb_setsansfont:nn { LibertinusSans }
      {
        Extension   = .otf,
        UprightFont = *-Regular,
        BoldFont    = *-Bold,
        ItalicFont  = *-Italic
      }
  }
\cs_new_protected:Npn \eb@font@load@lmmonolt@mono
  {
    \eb_setmonofont:nn { lmmonolt10 }
      {
        Extension       = .otf,
        UprightFont     = *-regular,
        BoldFont        = *-bold,
        ItalicFont      = *-oblique,
        BoldItalicFont  = *-boldoblique
      }
  }
\cs_new_protected:Npn \eb@font@load@ebgaramond
  {
    \eb_setmainfont:nn { EBGaramond }
      {
        Extension       = .otf,
        UprightFont     = *-Regular,
        BoldFont        = *-Bold,
        ItalicFont      = *-Italic,
        BoldItalicFont  = *-BoldItalic
      }
    \eb@font@load@libertinus@sans
    \eb@font@load@lmmonolt@mono
  }
\cs_new_protected:Npn \eb@font@load@libertine
  {
    \eb_setmainfont:nn { LibertinusSerif }
      {
        Extension       = .otf,
        UprightFont     = *-Regular,
        BoldFont        = *-Bold,
        ItalicFont      = *-Italic,
        BoldItalicFont  = *-BoldItalic
      }
    \eb@font@load@libertinus@sans
    \eb@font@load@lmmonolt@mono
  }
\cs_new_protected:Npn \eb@font@load@palatino
  {
    \eb_setmainfont:nn { texgyrepagella }
      {
        Extension       = .otf,
        UprightFont     = *-regular,
        BoldFont        = *-bold,
        ItalicFont      = *-italic,
        BoldItalicFont  = *-bolditalic
      }
    \eb@font@load@libertinus@sans
    \eb@font@load@lmmonolt@mono
  }
\cs_new_protected:Npn \eb_put_newtxmath:n #1
  { \PassOptionsToPackage{#1}{newtxmath} }
\cs_generate_variant:Nn \eb_put_newtxmath:n { V }
\str_case:VnF \l__eb_mathfont_value_tl
  {
    { times } { \RequirePackage{newtxmath,bm} }
    { none } { }
  }
  {
    \eb_put_newtxmath:V \l__eb_mathfont_value_tl
    \RequirePackage{newtxmath,bm}
  }

\ctex_set:n
  {
    secnumdepth     = 3,
    tocdepth        = \bool_if:NTF \l__eb_class_mode_book_bool { 1 } { 2 },
    part            =
      {
        pagestyle   = empty,
        format      = \color{ctex@frame}\sffamily\Huge,
        nameformat  = { },
        titleformat = { },
        aftername   =
          {
            \bool_if:NTF \l__eb_title_newline_bool
              { \par\nobreak }
              { \hspace{1em} }
          }
      },
    chapter         =
      {
        pagestyle   = empty,
        format      =
          {
            \color{ctex@frame}\sffamily\LARGE
            \bool_if:NF \l__eb_title_newline_bool { \centering }
          },
        nameformat  = { },
        titleformat = { },
        aftername   =
          {
            \bool_if:NTF \l__eb_title_newline_bool
              { \par\nobreak\vskip 1.5pc }
              { \hspace{1em} }
          },
        beforeskip  = 0pt,
        afterskip   = 25pt
      },
    section         =
      {
        hang        = true,
        format      = \color{ctex@frame}\sffamily\Large,
        aftername   = \hspace{0.5em},
        beforeskip  = 2ex plus .2ex minus .1ex,
        afterskip   = 2ex plus .2ex minus .1ex
      },
    subsection      =
      {
        hang        = true,
        format      = \color{ctex@frame}\sffamily\large,
        aftername   = \hspace{0.5em},
        beforeskip  = 1.5ex plus .2ex minus .1ex,
        afterskip   = 1.5ex plus .2ex minus .1ex
      },
    subsubsection   =
      {
        hang        = true,
        format      = \color{ctex@frame}\sffamily,
        aftername   = \hspace{0.5em},
        beforeskip  = \parskip,
        afterskip   = \parskip
      }
  }
\bool_if:NF \l__eb_title_newline_bool
  {
    \ctex_set:n
      {
        part/hang     = true,
        chapter/hang  = true
      }
  }
%</class>
%<*package>
\RequirePackage{etoolbox}
\ProvidesExplPackage{easybase}{2024/12/12}{2024ht}
  {Easily typesetting Chinese theses or books}

\cs_generate_variant:Nn \dim_set:Nn { NV }
\cs_generate_variant:Nn \dim_sign:n { V }
\cs_generate_variant:Nn \int_to_arabic:n { v }
\cs_generate_variant:Nn \msg_warning:nnn { nnV }
\cs_generate_variant:Nn \skip_set:Nn { NV }
\cs_generate_variant:Nn \ctex_define:nn { nx }
\cs_generate_variant:Nn \eb_set_hyperref:n { x }
\cs_generate_variant:Nn \tl_if_novalue:nF { V }

\cs_set_protected:Npn \ctex_define:nn #1
  { \keys_define:nn { ctex/#1 } }
\cs_new_protected:Npn \eb_patch_cmd:Nnn #1#2#3
  {
    \ctex_patch_cmd_once:NnnnTF #1 { } {#2} {#3}
      { } { \ctex_patch_failure:N #1 }
  }
\cs_new_protected:Npn \eb_preto_cmd:nn #1#2
  { \AddToHook{cmd/#1/before}{#2} }
\cs_new_protected:Npn \eb_appto_cmd:nn #1#2
  { \AddToHook{cmd/#1/after}{#2} }
\cs_set_protected:Npn \ctex_before_end_preamble:n
  { \BeforeBeginEnvironment{document} }
\cs_new_protected:Npn \eb_if_package_loaded:nnF #1#2#3
  {
    \IfPackageLoadedTF{#1}
      {
        \tl_if_blank:nTF {#2}
          { \msg_warning:nnn { easybase } { package-repeat-load-ii } {#1} }
          { \msg_warning:nnnn { easybase } { package-repeat-load-i } {#1} {#2} }
      }{#3}
  }
\msg_new:nnn { easybase } { package-repeat-load-i }
  {
    The~macro~package~'#1'~has~been~loaded~repeatedly. \\
    Please~pass~the~arguments~by \\
    the~\string\PassOptionsToPackage{#2}{#1}\ command.
  }
\msg_new:nnn { easybase } { package-repeat-load-ii }
  { The~macro~package~'#1'~has~been~loaded~repeatedly. }
\cs_set_eq:NN \eb@usepackage@save \usepackage
\RenewDocumentCommand{\usepackage}{O{}mO{}}
  {
    \PassOptionsToPackage{#1}{#2}
    \clist_map_inline:nn {#2}
      {
        \eb_if_package_loaded:nnF {##1} {#1}
          { \eb@usepackage@save{##1}[#3] }
      }
  }
\cs_new_protected:Npn \eb_match_load_package:n #1
  {
    \regex_match:nnTF { \[.*\] } {#1}
      { \eb@case@load@package #1 }
      { \eb@case@load@package{#1} }
  }
\NewDocumentCommand{\eb@case@load@package}{omO{}}
  {
    \IfNoValueTF{#1}
      {\IfFileExists{#2.sty}{\RequirePackage{#2}[#3]}{}}
      {\IfFileExists{#2.sty}{\RequirePackage[#1]{#2}[#3]}{}}
    \IfFileExists{#2.sty}{}
      {\msg_warning:nnn { easybase } { package-not-found } {#2}}
  }
\msg_new:nnn { easybase } { package-not-found }
  { The~macro~package~'#1'~can't~be~found. }
\cs_new_protected:Npn \ebloadpackage #1
  {
    \int_compare:nTF { \clist_count:n {#1} <= 1 }
      { \RequirePackage{#1} }
      {
        \clist_map_inline:nn {#1}
          { \eb_match_load_package:n {##1} }
      }
  }
\providecommand{\NewHookWithArguments}[2]{}
\ProvideDocumentCommand{\AddToHookWithArguments}{mo+m}{}

\bool_set_true:N \l__eb_class_mode_book_bool
\bool_set_false:N \l__eb_compile_draft_bool
\clist_new:N \g__eb_ctex_options_clist
\cs_new_protected:Npn \eb_put_geometry:n #1
  { \PassOptionsToPackage{#1}{geometry} }
\providebool{@openright}

\keys_define:nn { easybase }
  {
    draft .code:n           =
      {
        \bool_set_true:N \l__eb_compile_draft_bool
        \PassOptionsToPackage{draft}{hyperref}
      },
    floatpage .bool_set:N   = \l__eb_float_page_bool,
    floatpage .default:n    = true,
    floatpage .initial:n    = false,
    theorem .choices:nn     =
      { thmtools,keytheorems,false }
      { \tl_set:Nn \l__eb_theorem_support_tl {#1} },
    theorem/true .meta:n    = { theorem = thmtools },
    theorem .default:n      = thmtools,
    theorem .initial:n      = thmtools,
    chem .choices:nn        =
      { chemformula,mhchem,false }
      { \tl_set:Nn \l__eb_chem_support_tl {#1} },
    chem/true .meta:n       = { chem = chemformula },
    chem .default:n         = chemformula,
    chem .initial:n         = chemformula,
    paper .code:n           = \eb_put_geometry:n {#1},
    paper .initial:n        = a4paper,
    class .choice:,
    class .value_required:n = true,
    class/book .code:n      =
      {
        \bool_set_true:N \l__eb_class_mode_book_bool
        \eb_put_geometry:n { twoside }
        \booltrue{@titlepage}
        \booltrue{@openright}
      },
    class/article .code:n   =
      {
        \bool_set_false:N \l__eb_class_mode_book_bool
        \eb_put_geometry:n { twoside = false }
        \boolfalse{@titlepage}
      },
    class .initial:x = \cs_if_exist:NTF \chapter { book } { article },
    book .meta:n            = { class = book },
    article .meta:n         = { class = article },
    twoside .code:n         = \eb_put_geometry:n { twoside },
    oneside .code:n         = \eb_put_geometry:n { twoside = false },
    titlepage .code:n       = \booltrue{@titlepage},
    notitlepage .code:n     = \boolfalse{@titlepage},
    openright .code:n       = \booltrue{@openright},
    openany .code:n         = \boolfalse{@openright},
    unknown .code:n = \clist_gput_right:NV \g__eb_ctex_options_clist \CurrentOption
  }

\PassOptionsToPackage{list = off}{bicaption}
\PassOptionsToPackage{svgnames}{xcolor}
\PassOptionsToPackage{many}{tcolorbox}
\cs_if_exist:NTF \ProcessKeyOptions
  { \ProcessKeyOptions[easybase] }
  {
    \RequirePackage{l3keys2e}
    \ProcessKeysOptions{easybase}
  }
\PassOptionsToPackage{\g__eb_ctex_options_clist}{ctex}
\IfClassLoadedTF{ctexbook}{}
  {
    \IfClassLoadedTF{ctexart}{}
      {
        \IfClassLoadedTF{ctexrep}{}
          {\RequirePackage[heading]{ctex}}
      }
  }
\ctex_disable_package:n { nccfoots }
\ctex_disable_package:n { tocloft }
\ctex_disable_package:n { titlesec }

\seq_set_from_clist:Nn \l__eb_module_paths_seq
  {
    tools,font,space,bib,
    thmt,toc,hdr,float,
    ref,geo,cap
  }
\seq_map_inline:Nn \l__eb_module_paths_seq
  {
    \ctex_define:n { #1 .meta:nn = { ctex/#1 } {##1} }
    \cs_new_protected:cpn { eb#1set } ##1 { \ctex_set:nn {#1} {##1} }
  }
\RenewDocumentCommand{\ctexset}{o+m}
  {
    \IfValueTF{#1}
      {\ctex_set:nn {#1} {#2}}
      {\ctex_set:n {#2}}
  }
\bool_until_do:nn
  { \int_compare_p:nNn { \seq_count:N \l__eb_module_paths_seq } < { 9 } }
  { \seq_pop_right:NN \l__eb_module_paths_seq \l_tmpa_tl }
\seq_map_inline:Nn \l__eb_module_paths_seq
  {
    \msg_new:nnn { easybase } { deprecated-#1 }
      {
        The~option~'##1'~of~module~'#1'~is~deprecated~or~non-existent. \\
        Please~browse~the~user~manual~for~the~new~options.
      }
  }
\cs_new_protected:Npn \eb_msg_deprecated_option:n #1
  { \msg_warning:nnV { easybase } { deprecated-#1 } \l_keys_key_str }
\cs_if_exist:NF \chapter
  {
    \newcounter{chapter}
    \providebool{@mainmatter}
    \bool_set_false:N \l__eb_class_mode_book_bool
    \ctex_define:n { chapter .meta:nn = { ctex/chapter } {#1} }
    \ctex_define:n { chapter/tocline .code:n = { } }
  }
\bool_if:NF \l__eb_class_mode_book_bool
  {
    \cs_undefine:N \chapter
    \ctex_after_end_preamble:n
      {
        \NewDocumentCommand{\chapter}{som}
          {
            \msg_error:nn { easybase } { no-chapter }
            \msg_redirect_name:nnn { easybase } { no-chapter } { none }
          }
      }
  }
\msg_new:nnn { easybase } { no-chapter }
  {
    Your~document~class~is~in~'article'~mode. \\
    The~'\string\chapter'\ command~will~not~be~used.
  }

\ebloadpackage
  {
    [text]{spbmark},
    [{shortlabels,inline}]{enumitem},
    siunitx,pifont,
    geometry,marginnote,multicol,
    fancyhdr,titletoc,caption,
    tabularray,graphicx,xcolor,
    listings
  }
\cs_new_protected:Npn \eb_package_date_check:nn #1#2
  {
    \IfPackageAtLeastTF{#1}{#2}{}
      {\msg_warning:nnn { easybase } { package-old } {#1}}
  }
\msg_new:nnn { easybase } { package-old }
  {
    Package~'#1'~has~been~out~of~date. \\
    Some~problems~or~errors~may~occur \\
    if~you~continue~compiling. \\\\
    Please~update~your~macro~package~from~CTAN.
  }

\ctex_at_end_package:nn { pdfpages }
  { \includepdfset{fitpaper = true} }
\geometry
  {
    vmargin         = 2.54cm,
    hmargin         = 3.17cm,
    columnsep       = 2em,
    headheight      = 2.14cm,
    headsep         = 0.4cm,
    footnotesep     = 0.4cm,
    footskip        = 0.79cm,
    marginparsep    = 8pt,
    marginparwidth  = 2.54cm
  }
\cs_new:Npn \eb_unknown_kv_handle:
  {
    \str_use:N \l_keys_key_str
    \tl_if_novalue:VF \l_keys_value_tl
      { = {\exp_not:V \l_keys_value_tl} }
  }
\ctex_define:nn { geo }
  {
    headruleskip .tl_set:N  = \headruleskip,
    headruleskip .initial:n = 0pt,
    footruleskip .tl_set:N  = \footruleskip,
    footruleskip .initial:n = 3.5pt,
    unknown .code:n = \exp_args:Nx \geometry { \eb_unknown_kv_handle: },
    unknown .default:V      = \c_novalue_tl
  }

\cs_new_protected:Npn \blankpagestyle #1
  { \tl_set:Nn \l__eb_blank_pagestyle_tl {#1} }
\blankpagestyle{empty}
\RenewDocumentCommand{\cleardoublepage}{O{\l__eb_blank_pagestyle_tl}}
  {
    \clearpage
    \ifbool{@twoside}
      {
        \int_if_odd:nF { \c@page }
          { \hbox:n { }\thispagestyle{#1}\clearpage }
      }{}
  }
\DeclareDocumentCommand{\frontmatter}{sO{Roman}}
  {
    \IfBooleanTF{#1}{\clearpage}{\cleardoublepage}
    \boolfalse{@mainmatter}
    \pagenumbering{#2}
  }
\DeclareDocumentCommand{\mainmatter}{s}
  {
    \IfBooleanTF{#1}{\clearpage}{\cleardoublepage}
    \booltrue{@mainmatter}
    \pagenumbering{arabic}
  }
\NewDocumentCommand{\markrule}
  {O{\textwidth}D(){ctex@frame}mO{0pt}}
  {
    \group_begin:
    \color{#2}
    \exp_last_unbraced:Nx \hrule
      {
        \@width \dim_eval:n {#1}
        \@height \dim_eval:n {#3}
        \@depth \dim_eval:n {#4}
      }
    \group_end:
  }
\cs_new:Npn \eb_mark_uppercase_case_init:n
  {
    \str_case:Vn \l__eb_mark_uppercase_value_tl
      {
        { all } { \text_uppercase:n }
        { first } { \text_titlecase_first:n }
        { none* } { \text_lowercase:n }
      }
  }
\cs_new_protected:Npn \eb@register@hdr@mark #1
  {
    \exp_args:Nc \DeclareDocumentCommand { eb@mark@#1@label@layout }
      {O{\use:c { CTEXthe#1 }}m}
      {\tl_set:cn { eb@mark@#1@label } {##1##2}}
    \cs_set_protected:cpn { eb_mark_#1_name_parse:n } ##1
      {
        \regex_match:nnTF { ^\[.*\] } {##1}
          { \use:c { eb@mark@#1@label@layout }##1 }
          { \use:c { eb@mark@#1@label@layout }{##1} }
      }
    \ctex_define:nn { hdr }
      {
        #1-mark .cs_set:cp  = { eb@mark@#1@whole } ##1,
        #1-mark .initial:n  =
          {
            \CTEXifname{\use:c { eb@mark@#1@label }}{}
            \eb_mark_uppercase_case_init:n {##1}
          },
        #1-label .code:n    = \use:c { eb_mark_#1_name_parse:n } {##1},
        #1-label .initial:n = \hspace{0.5em}
      }
  }
\cs_new_protected:Npn \RegisterHdrMark #1
  {
    \clist_map_function:nN {#1}
      \eb@register@hdr@mark
  }
\RegisterHdrMark{chapter,section,subsection}
\ctex_set:nn { hdr } { chapter-label = \hspace{1em} }
\ctex_define:nn { hdr }
  {
    chap-mark .meta:n         = { chapter-mark = {#1} },
    sec-mark .meta:n          = { section-mark = {#1} },
    subsec-mark .meta:n       = { subsection-mark = {#1} },
    chap-label .meta:n        = { chapter-label = {#1} },
    sec-label .meta:n         = { section-label = {#1} },
    subsec-label .meta:n      = { subsection-label = {#1} },
    headrulewd .dim_set:N     = \eb@head@rule@wd,
    headrulewd .initial:n     = 0.5pt,
    footnoterulewd .dim_set:N = \eb@footnote@rule@wd,
    footnoterulewd .initial:n = 0.5pt,
    headrule .tl_gset:N       = \headrule,
    headrule .initial:n       = \markrule{\eb@head@rule@wd},
    footrule .tl_gset:N       = \footrule,
    footrule .initial:n       = { },
    footnoterule .tl_gset:N   = \footnoterule,
    footnoterule .initial:n   =
      {
        \markrule[0.35\textwidth]{\eb@footnote@rule@wd}
        \vspace*{3pt}
      }
  }

\cs_set:Npn \markdouble #1 { \markboth{#1}{\ifbool{@twoside}{#1}{}} }
\cs_new_protected:Npn \eb@level@markdouble #1#2
  { \markdouble{\use:c { eb@mark@#1@whole }{#2}} }
\cs_new_protected:Npn \eb@level@markright #1#2
  { \markright{\use:c { eb@mark@#1@whole }{#2}} }
\cs_gset:Npn \chaptermark #1 { \eb@level@markdouble{chapter}{#1} }
\cs_gset:Npx \sectionmark #1
  {
    \bool_if:NTF \l__eb_class_mode_book_bool
      { \eb@level@markright{section}{#1} }
      { \eb@level@markdouble{section}{#1} }
  }
\cs_gset:Npx \subsectionmark #1
  {
    \bool_if:NF \l__eb_class_mode_book_bool
      { \eb@level@markright{subsection}{#1} }
  }
\fancyhf{}
\ifbool{@twoside}
  {
    \fancyhead[EC]{\color{ctex@frame}\kaishu\leftmark}
    \fancyhead[OC]{\color{ctex@frame}\kaishu\rightmark}
    \fancyhead[EL,OR]{\color{ctex@frame}\thepage}
  }{
    \fancyhead[L]{\color{ctex@frame}\kaishu\leftmark}
    \fancyhead[R]{\color{ctex@frame}\thepage}
  }
\bool_if:NT \l__eb_compile_draft_bool
  {
    \fancyfoot[C]{\color{SlateGray}\sffamily\today}
    \geometry{showframe}
  }
\bool_new:N \l__eb_ps_used_bool
\NewHook{ps@end}
\AddToHook{ps@end}{\bool_set_true:N \l__eb_ps_used_bool}
\apptocmd{\pagestyle}{\UseOneTimeHook{ps@end}}{}{}
\ctex_at_end_preamble:n
  {
    \bool_if:NF \l__eb_ps_used_bool { \pagestyle{fancy} }
    \providecommand{\kaishu}{\itshape}
  }

\ctex_define:nn { tools }
  {
    fntnumwith .choices:nn        =
      { part,page,chapter }
      { \tl_set:Nn \l__eb_fnt_parent_counter_tl {#1} },
    fntnumwith .value_required:n  = true,
    fntnumwith .initial:n         = chapter
  }
\NewDocumentCommand{\eb_assign_fntext_code:n}
  {>{\SplitArgument{1}{,}}m}
  {\eb_assign_fnmark_code_pos:nn #1}
\cs_new_protected:Npn \eb_assign_fnmark_code_pos:nn #1#2
  {
    \tl_set:Nn \l__eb_fntext_before_tl {#1}
    \tl_if_novalue:nTF {#2}
      { \tl_clear:N \l__eb_fntext_after_tl }
      { \tl_set:Nn \l__eb_fntext_after_tl {#2} }
  }
\cs_new_protected:Npn \eb_fnnormal_counter_pifont:N #1
  { \ding{\int_eval:n { 171 + #1 }} }
\cs_new_protected:Npn \eb_fnnormal_counter_pifont_neg:N #1
  { \ding{\int_eval:n { 181 + #1 }} }
\cs_new_protected:Npn \eb_fnnormal_counter_pisans:N #1
  { \ding{\int_eval:n { 191 + #1 }} }
\cs_new_protected:Npn \eb_fnnormal_counter_pisans_neg:N #1
  { \ding{\int_eval:n { 201 + #1 }} }
\cs_new:Npn \eb_fnt_map_symbols_list:n #1
  {
    \eb_fnt_map_symbols_list:nn #1
    \q_recursion_tail \q_recursion_tail
    \q_recursion_stop
  }
\cs_new:Npn \eb_fnt_map_symbols_list:nn #1#2
  {
    \quark_if_recursion_tail_stop:n {#1}
    \quark_if_recursion_tail_stop:n {#2}
    { #1 + \int_use:N \c@footnote } { \exp_not:n {#2} }
    \eb_fnt_map_symbols_list:nn
  }
\cs_new_protected:Npn \SetFntSymbsList #1#2#3
  {
    \cs_set_protected:cpn { eb@use@fnt@symbol@#1 }
      {
        \cs_set:Npx \eb_int_to_symbols:n ####1
          {
            \exp_not:N \int_to_symbols:nnn {####1}
              { #2 + \int_use:N \c@footnote }
              { \eb_fnt_map_symbols_list:n {#3} }
          }
      }
  }
\cs_new_protected:Npn \UseFntSymbsList #1
  {
    \cs_if_exist_use:cF { eb@use@fnt@symbol@#1 }
      { \msg_warning:nnn { easybase } { undefined-fntsymbol } {#1} }
  }
\msg_new:nnn { easybase } { undefined-fntsymbol }
  { The~list~of~footnote~symbols~'#1'~isn't~defined. }
\SetFntSymbsList{empty}{1}{}
\SetFntSymbsList{fnsymbol}{10}
  {
    { 1 } { $*$ }
    { 2 } { $\dagger$ }
    { 3 } { $\ddagger$ }
    { 4 } { $\mathsection$ }
    { 5 } { $\mathparagraph$ }
    { 6 } { $\|$ }
    { 7 } { $**$ }
    { 8 } { $\dagger\dagger$ }
    { 9 } { $\ddagger\ddagger$ }
    { 10 } { \@ctrerr }
  }
\UseFntSymbsList{empty}
\cs_set_eq:NN \DefineFntSymbols \SetFntSymbsList
\cs_set_eq:NN \setfntsymbol \UseFntSymbsList
\tl_new:N \l__eb_fnnormal_tmpa_tl
\tl_new:N \l__eb_fnnormal_tmpb_tl
\cs_new_protected:Npn \eb_fnnormal_normal_label_set:Nn #1#2
  {
    \tl_set:Nn \l__eb_fnnormal_tmpa_tl {#2}
    \cs_set:Npx #1
      {
        \str_case:VnT \l__eb_fnnormal_tmpa_tl
          {
            { plain }
            { \exp_not:N \int_use:N }
            { pifont }
            { \eb_fnnormal_counter_pifont:N }
            { pifont* }
            { \eb_fnnormal_counter_pifont_neg:N }
            { pisans }
            { \eb_fnnormal_counter_pisans:N }
            { pisans* }
            { \eb_fnnormal_counter_pisans_neg:N }
          }
          { \exp_not:N \c@footnote }
      }
    \cs_set_eq:NN \thedownfootnote \thefootnote
  }
\cs_generate_variant:Nn \msg_warning:nnnn { nnnV }
\cs_new:Npn \eb_footnote_int_trans:n #1
  {
    \prop_item:Nn \l__eb_int_trans_cmds_prop {#1}
    \exp_not:N \c@footnote
  }
\prop_set_from_keyval:Nn \l__eb_int_trans_cmds_prop
  {
    A = \int_to_Alph:n,
    a = \int_to_alph:n,
    1 = \int_to_arabic:n,
    I = \int_to_Roman:n,
    i = \int_to_roman:n,
    c = \exp_args:NV \zhnumber,
    s = \eb_int_to_symbols:n
  }
\cs_new_protected:Npn \eb_fnnormal_short_label_set:Nn #1#2
  {
    \tl_set:Nn \l__eb_fnnormal_tmpb_tl {#2}
    \clist_map_inline:nn
      { A,a,1,I,i,c,s }
      {
        \regex_match:nnTF {##1} {#2}
          {
            \regex_replace_once:nnN {##1}
              { \c{eb_footnote_int_trans:n}\0 }
              \l__eb_fnnormal_tmpb_tl
            \cs_set:Npx #1 { \l__eb_fnnormal_tmpb_tl }
            \clist_map_break:
          }
          {
            \str_if_eq:nnT {##1} { s }
              {
                \str_if_eq:nnTF {#1} { \thefootnote }
                  { \str_set:Nn \l_tmpa_str { \thedownfootnote } }
                  { \str_set:Nn \l_tmpa_str { \theupfootnote } }
                \msg_warning:nnnV { easybase } { unknown-fnt-type } {#2} \l_tmpa_str
              }
          }
      }
    \cs_set_eq:NN \thedownfootnote \thefootnote
  }
\msg_new:nnn { easybase } { unknown-fnt-type }
  {
    The~'#1'~includes~unknown~footnote~numbering~type \\
    in~#2.
  }
\cs_new_protected:Npn \eb_footnote_value_handle:n #1
  {
    \str_case:nnF {#1}
      {
        { bottom }
        { \PushFntBottom }
        { flush }
        {
          \tl_set:Nn \l__eb_footnote_value_tl { plain }
          \clist_push:Nn \l__eb_footnote_value_clist {#1}
        }
      }
      {
        \bool_lazy_or:nnT
          { \str_if_eq_p:nn {#1} { hang } }
          { \str_if_eq_p:nn {#1} { plain } }
          { \tl_set:Nn \l__eb_footnote_value_tl {#1} }
      }
  }
\cs_new_protected:Npn \eb_fnnormal_move_set:nnn #1#2#3
  {
    \str_if_eq:nnTF {#1} { match }
      {
        \tl_set:cv { l__eb_fn#2_#3move_tl }
          { l__spb_super_#3move_tl }
      }
      { \tl_set:cn { l__eb_fn#2_#3move_tl } {#1} }
  }
\cs_new_protected:Npn \eb_fnboth_format_set:nn #1#2
  {
    \str_if_eq:nnTF {#1} { match }
      { \bool_set_true:c { l__eb_fn#2_format_match_bool } }
      {
        \bool_set_false:c { l__eb_fn#2_format_match_bool }
        \tl_set:cn { l__eb_fn#2_format_tl } {#1}
      }
  }

\tl_new:N \l__eb_fnnormal_format_tl
\tl_new:N \l__eb_fncustom_format_tl
\clist_new:N \l__eb_footnote_value_clist
\ctex_define:nn { hdr }
  {
    fnfirstindent .tl_set:N         = \fnfirstindent,
    fnfirstindent .initial:n        = 1em,
    fnafterindent .tl_set:N         = \fnafterindent,
    fnafterindent .initial:n        = 2em,
    fnparskip .tl_set:N             = \fnparskip,
    fnparskip .initial:n            = 0ex plus .1ex,
    footnotesep .dim_set:N          = \footnotesep,
    fnpara-format .tl_set:N         = \l__eb_fnpara_format_tl,
    fntext-pos .tl_set:N            = \l__eb_fntext_position_tl,
    fntext-pos .initial:n           = super,
    fntext-code .code:n             = \eb_assign_fntext_code:n {#1},
    fntext-code .initial:n = { ,\tl_if_eq:NnF \l__eb_fntext_position_tl { super } { ~ } },
    fnnormal-format .code:n = \eb_fnboth_format_set:nn {#1} { normal },
    fncustom-format .code:n = \eb_fnboth_format_set:nn {#1} { custom },
    fnmarktext-format .meta:n       = { fnnormal-format = {#1} },
    fnboth-format .meta:n = { fnnormal-format = {#1},fncustom-format = {#1} },
    footnotetype .multichoices:nn   =
      { plain,hang,bottom,para,flush }
      { \eb_footnote_value_handle:n {#1} },
    footnotetype .value_required:n  = true,
    footnotetype/default .meta:n    = { footnotetype = plain },
    footnotetype .initial:n         = hang,
    fnmark-vmove .code:n = \eb_fnnormal_move_set:nnn {#1} { mark } { v },
    fnmark-hmove .code:n = \eb_fnnormal_move_set:nnn {#1} { mark } { h },
    fntext-vmove .code:n = \eb_fnnormal_move_set:nnn {#1} { text } { v },
    fnmark-vmove .initial:n         = 0pt,
    fnmark-hmove .initial:n         = 0pt,
    fntext-vmove .initial:n         = 0pt,
    fnmark-num .choices:nn          =
      { plain,pifont,pifont*,pifont-sans,pifont-sans* }
      { \eb_fnnormal_normal_label_set:Nn \theupfootnote {#1} },
    fnmark-num .value_required:n    = true,
    fnmark-num/unknown .code:n = \eb_fnnormal_short_label_set:Nn \theupfootnote {#1},
    fntext-num .choices:nn          =
      { plain,pifont,pifont*,pifont-sans,pifont-sans* }
      { \eb_fnnormal_normal_label_set:Nn \thefootnote {#1} },
    fntext-num .value_required:n    = true,
    fntext-num/unknown .code:n = \eb_fnnormal_short_label_set:Nn \thefootnote {#1},
    fnnormal-num .meta:n = { fntext-num = {#1},fnmark-num = {#1} },
    fnnormal-num .initial:n         = plain,
    fnmarktext-num .meta:n          = { fnnormal-num = {#1} },
    unknown .code:n                 = \eb_msg_deprecated_option:n { hdr }
  }

\ctex_before_end_preamble:n
  {
    \bool_if:NT \l__eb_chap_counter_withpart_bool
      { \counterwithin*{chapter}{part} }
    \str_case:VnT \l__eb_fnt_parent_counter_tl
      {
        { part } { \counterwithin*{footnote}{part} }
        { page }
        {
          \RequirePackage{zref-perpage}
          \zmakeperpage{footnote}
        }
      }
      { \counterwithout*{footnote}{chapter} }
  }

\def\@if@footnotes@TF #1#2 {\ifvoid\footins #2\else #1\fi}
\def\@outputbox@removebskip
  {
    \ifx\@textbottom\relax\else
      \@outputbox@append
        {
          \@tempskipa\lastskip
          \ifnum\gluestretchorder\@tempskipa>\z@
            \vskip -\@tempskipa
            \xdef\@outputbox@reinsertbskip
              {\noexpand\@outputbox@append{\vskip\the\@tempskipa}}
          \else
            \global\let\@outputbox@reinsertbskip\relax
          \fi
        }
    \fi
  }
\let\@outputbox@reinsertbskip\relax
\def\@outputbox@append #1
  {
    \setbox\@outputbox\vbox
      {
        \boxmaxdepth\@maxdepth
        \dimen@\dp\@outputbox
        \unvbox\@outputbox
        #1
      }
  }
\def\@outputbox@attachfloats{\@combinefloats}
\NewHook{eb/footins/before}
\NewHook{eb/footins/begin}
\def\@outputbox@appendfootnotes
  {
    \@if@footnotes@TF
      {
        \UseHook{eb/footins/before}
        \@outputbox@append
          {
            \vskip\skip\footins
            \UseHook{eb/footins/begin}
            \color@begingroup
            \normalcolor
            \footnoterule
            \@nameuse{pdfcolfoot@current}
            \unvbox\footins
            \color@endgroup
          }
      }{}
  }
\def\@makenormalcolbox
  {
    \setbox\@outputbox\vbox to\@colht
      {
        \@texttop
        \dimen@\dp\@outputbox
        \unvbox\@outputbox
        \vskip -\dimen@
        \@textbottom
      }
  }
\cs_new_protected:Npn \PushFntBottom
  {
    \cs_set:Npn \@makecol
      {
        \setbox\@outputbox\box\@cclv
        \@outputbox@removebskip
        \let\@elt\relax
        \xdef\@freelist{\@freelist\@midlist}
        \global\let\@midlist\@empty
        \@outputbox@attachfloats
        \@if@footnotes@TF
          {\@outputbox@append{\vfill}}
          {\@outputbox@reinsertbskip}
        \@outputbox@appendfootnotes
        \ifvbox\@kludgeins
          \@makespecialcolbox
        \else
          \@makenormalcolbox
        \fi
        \global\maxdepth\@maxdepth
      }
  }
\@onlypreamble\PushFntBottom

\cs_new_protected:Npn \eb_footnote_direct_hang:
  {
    \hbox_set:Nn \l_tmpa_box
      {
        \dim_compare:nNnTF { \fnfirstindent } > { 0pt }
          { \hbox_to_wd:nn { \fnfirstindent } { \eb@makefnmark\hss } }
          { \eb@makefnmark }
      }
    \dim_set:Nn \leftmargin { \box_wd:N \l_tmpa_box }
    \dim_zero:N \rightmargin
    \dim_set_eq:NN \linewidth \columnwidth
    \dim_sub:Nn \linewidth { \leftmargin }
    \parshape\@ne\leftmargin\linewidth
    \@setpar{{\@@par}}
    \mode_leave_vertical:
    \hbox_overlap_left:n { \box_use:N \l_tmpa_box }
  }
\cs_new_protected:Npn \eb_footnote_direct_plain:
  {
    \noindent
    \clist_if_in:NnT \l__eb_footnote_value_clist { flush }
      { \tl_set:Nn \fnfirstindent { 0pt } }
    \int_case:nn { \dim_sign:V \fnfirstindent }
      {
        { 1 } { \use_i:nnn }
        { 0 } { \use_ii:nnn }
        { -1 } { \use_iii:nnn }
      }
      { \hbox_to_wd:nn { \fnfirstindent } { \hss\eb@makefnmark } }
      { \hbox_overlap_left:n { \eb@makefnmark } }
      {
        \hbox_overlap_left:n
          {
            \hbox_to_wd:nn { -\fnfirstindent }
              { \eb@makefnmark\hss }
          }
      }
  }
\cs_new_protected:Npn \deffntpara #1
  { \cs_set:Npn \@makefntext ##1 {#1} }
\deffntpara
  {
    \str_case:Vn \l__eb_footnote_value_tl
      {
        { hang } { \use_i:nn }
        { plain } { \use_ii:nn }
      }
      { \eb_footnote_direct_hang: }
      { \eb_footnote_direct_plain: }
    \skip_set:NV \parskip \fnparskip
    \dim_set:NV \parindent \fnafterindent
    \l__eb_fnpara_format_tl{#1}
    \tl_if_eq:NnT \l__eb_footnote_value_tl { hang } { \par }
  }
\clist_map_inline:nn { \@footnotetext,\@mpfootnotetext }
  {
    \eb_patch_cmd:Nnn #1
      { \reset@font }
      {
        \usestretch{\eb@spread@footnote}
        \eb@font@footnote
      }
  }
\cs_set_eq:NN \eb@@makefntext \@makefntext
\cs_set_eq:NN \eb@@footnotetext \@footnotetext
\cs_set_eq:NN \eb@@mpfootnotetext \@mpfootnotetext
\ctex_at_end_package:nn { footmisc }
  {
    \eb_package_date_check:nn { footmisc } { 2022/02/10 }
    \ifboolexpr{not (bool {FN@para} or bool {FN@sidefn})}
      {
        \boolfalse{FN@setspace}
        \cs_set_eq:NN \@makefntext \eb@@makefntext
        \cs_set_eq:NN \@footnotetext \eb@@footnotetext
      }{}
    \ifboolexpr
      {
        bool {FN@hangfoot} or
        bool {FN@perpage} or
        bool {FN@robust}
      }
      {\msg_warning:nn { easybase } { footmisc }}{}
  }
\msg_new:nnn { easybase } { footmisc }
  {
    It~is~not~recommended~that~you~use~the \\
    hang,~symbol,~perpage,~marginal~or~flushmargin \\
    options~of~'footmisc'~package.
  }
\ctex_at_end_package:nn { setspace }
  {
    \cs_set_eq:NN \@footnotetext \eb@@footnotetext
    \cs_set_eq:NN \@mpfootnotetext \eb@@mpfootnotetext
  }
\cs_set_protected:Npn \footref #1
  {
    \group_begin:
    \unrestored@protected@xdef\@thefnmark{\ref{#1}}
    \unrestored@protected@xdef\@the@up@fnmark{\ref{#1}}
    \group_end:
    \H@@footnotemark
  }
\cs_set:Npn \@xfootnote [#1]
  {
    \group_begin:
    \int_set:cn { c@\@mpfn } {#1}
    \unrestored@protected@xdef\@thefnmark{\thempfn}
    \unrestored@protected@xdef\@the@up@fnmark{\theupfootnote}
    \group_end:
    \@footnotemark
    \@footnotetext
  }
\cs_new_protected:Npn \eb_set_current_label:n #1
  {
    \protected@edef\@currentlabel
      {
        \exp_args:Nnv
        \use:c { p@#1 } { the#1 }
      }
  }
\cs_set_protected:Npn \footnote
  {
    \peek_meaning:NTF [
      { \@xfootnote }
      {
        \exp_args:NV \stepcounter \@mpfn
        \eb_set_current_label:n { upfootnote }
        \protected@xdef\@thefnmark{\thempfn}
        \protected@xdef\@the@up@fnmark{\theupfootnote}
        \@footnotemark
        \@footnotetext
      }
  }
\cs_set:Npn \footnotemark
  {
    \peek_meaning:NTF [
      { \@xfootnotemark }
      {
        \stepcounter{footnote}
        \protected@xdef\@thefnmark{\thefootnote}
        \protected@xdef\@the@up@fnmark{\theupfootnote}
        \@footnotemark
      }
  }
\ctex_at_end_package:nn { hyperref }
  {
    \cs_set:Npn \@xfootnotemark [#1]
      {
        \group_begin:
        \int_set:Nn \c@footnote {#1}
        \protected@xdef\@thefnmark{\thefootnote}
        \unrestored@protected@xdef\@the@up@fnmark{\theupfootnote}
        \group_end:
        \H@@footnotemark
      }
  }

\ProvideDocumentCommand{\super}{mo}{\textsuperscript{#1}}
\providecommand{\spbset}{\use_none:n}
\NewDocumentCommand{\eb@fnnormal@super}{sm}
  {
    \IfBooleanTF{#1}
      {\super{#2}[vmove = \l__eb_fntext_vmove_tl,nohmove]}
      {
        \super{\l__eb_fnnormal_format_tl{#2}}[
          vmove = \l__eb_fnmark_vmove_tl,
          hmove = \l__eb_fnmark_hmove_tl
          ]
      }
  }
\bool_set_true:N \l__eb_normal_footnote_bool
\bool_new:N \l__eb_fnnormal_format_match_bool
\bool_new:N \l__eb_fncustom_format_match_bool
\cs_new_protected:Npn \ifnormalfnt #1#2
  { \bool_if:NTF \l__eb_normal_footnote_bool {#1} {#2} }
\cs_new:Npn \eb_fnnormal_format_clear:n #1
  {
    \bool_if:cTF { l__eb_fn#1_format_match_bool }
      { \tl_clear:N \l__eb_fnnormal_format_tl }
      { \spbset{spcmd = { }} }
  }
\cs_new_protected:Npn \eb_fnnormal_format_initial:
  {
    \bool_if:NTF \l__eb_normal_footnote_bool
      { \eb_fnnormal_format_clear:n { normal } }
      { \eb_fnnormal_format_clear:n { custom } }
    \eb@font@footnote
  }
\cs_new_protected:Npn \defupfntmark #1
  { \cs_set:Npn \@makefnmark { \hbox:n {#1} } }
\cs_new_protected:Npn \defdownfntmark #1
  { \cs_set:Npn \eb@makefnmark { \hbox:n {#1} } }
\cs_new_protected:Npn \notminipage
  { \tl_if_eq:NnTF \@mpfn { footnote } }
\defupfntmark
  {
    \eb_fnnormal_format_initial:
    \eb@fnnormal@super{\notminipage{\@the@up@fnmark}{\@thefnmark}}
  }
\defdownfntmark
  {
    \eb_fnnormal_format_initial:
    \tl_if_eq:NnTF \l__eb_fntext_position_tl { super }
      { \eb@fnnormal@super* }
      { \use:n }
      {
        \tl_use:N \l__eb_fntext_before_tl
          { \l__eb_fnnormal_format_tl{\@thefnmark} }
      }
    \tl_use:N \l__eb_fntext_after_tl
  }

\tl_clear_new:N \@thefnmark
\tl_new:N \@the@up@fnmark
\cs_new:Npn \eb@@makefnmark #1#2
  {
    \tl_if_empty:oF {#2}
      {
        \group_begin:
        \unrestored@protected@xdef\@thefnmark{#2}
        \unrestored@protected@xdef\@the@up@fnmark{#1}
        \group_end:
      }
  }
\cs_new_protected:Npn \eb_fncustom_format_initial:
  {
    \bool_set_false:N \l__eb_normal_footnote_bool
    \bool_if:NF \l__eb_fncustom_format_match_bool
      {
        \tl_set_eq:NN
        \l__eb_fnnormal_format_tl \l__eb_fncustom_format_tl
      }
  }
\NewDocumentCommand{\Footnote}{O{#2}m+m}
  {
    \group_begin:
    \eb_fncustom_format_initial:
    \eb@@makefnmark{#2}{#1}
    \@footnotemark
    \@footnotetext{#3}
    \group_end:
  }
\cs_new_protected:Npn \Footnotemark #1
  {
    \group_begin:
    \eb_fncustom_format_initial:
    \eb@@makefnmark{#1}{#1}\@footnotemark
    \group_end:
  }
\cs_new_protected:Npn \Footnotetext #1#2
  {
    \group_begin:
    \eb_fncustom_format_initial:
    \eb@@makefnmark{#1}{#1}\@footnotetext{#2}
    \group_end:
  }

\newcounter{bichapter}
\newcounter{bisection}[bichapter]
\newcounter{bisubsection}[bisection]
\NewDocumentCommand{\counteruse}{sO{}D(){}mo}
  {
    \use:c { the#4 }
    \msg_warning:nnn { easybase } { counteruse } {#4}
  }
\msg_new:nnn { easybase } { counteruse }
  {
    The~command~\string\counteruse{#1}\ is~deprecated. \\
    Please~use~the~\string\the#1\ command.
  }
\RenewDocumentCommand{\counterwithin}{sO{\arabic}mO{.}m}
  {
    \@ifbothcounters{#3}{#5}
      {
        \@addtoreset{#3}{#5}
        \IfBooleanF{#1}
          {
            \cs_gset:cpn { the#3 }
              { \use:c { the#5 }#4#2{#3} }
          }
      }
  }
\cs_new_protected:Npn \undefinecounter #1
  {
    \cs_undefine:c { c@#1 }
    \cs_undefine:c { the#1 }
    \group_begin:
    \exp_args:Nc \providecommand { c@@ckpt }{}
    \@removefromreset{#1}{@ckpt}
    \group_end:
  }
\ProvideDocumentCommand{\declarecounter}{mo}
  {
    \undefinecounter{#1}
    \IfValueTF{#2}{\newcounter{#1}[#2]}{\newcounter{#1}}
  }
\ProvideDocumentCommand{\renewcounter}{mo}
  {
    \cs_if_exist:cTF { c@#1 }
      { \IfValueTF{#2}{\declarecounter{#1}[#2]}{\declarecounter{#1}} }
      { \exp_args:Nc \renewcommand { c@#1 }{} }
  }
\ProvideDocumentCommand{\providecounter}{mo}
  {
    \cs_if_exist:cF { c@#1 }
      { \IfValueTF{#2}{\newcounter{#1}[#2]}{\newcounter{#1}} }
  }
\cs_new:Npn \eb_section_counter_prefix:n #1
  {
    \int_compare:nNnT { \c@chapter } > { 0 } { \use:c { the#1chapter }. }
    \int_to_arabic:v { c@#1section }
  }
\cs_set:Npn \thebichapter { \@arabic\c@bichapter }
\cs_set:Npn \thebisection { \eb_section_counter_prefix:n { bi } }
\cs_set:Npn \thebisubsection { \thebisection.\@arabic\c@bisubsection }
\cs_set:Npn \thesection { \eb_section_counter_prefix:n { } }
\NewHook{eb/addbitocline/begin}
\DeclareHookRule{eb/addbitocline/begin}{chapter}{<}{code}
\NewDocumentCommand{\BeforeAddtoBitoc}{sm}
  {
    \IfBooleanT{#1}{\RemoveFromHook{eb/addbitocline/begin}[code]}
    \AddToHook{eb/addbitocline/begin}[code]{#2}
  }
\cs_set_eq:NN \BeforeAddBitoc \BeforeAddtoBitoc
\cs_new_protected:Npn \CTEX@addbitocline #1#2
  {
    \group_begin:
    \def\CTEX@prechapter{\CTEX@prebichapter}
    \def\CTEX@thechapter{\CTEX@bichapter@number}
    \def\CTEX@postchapter{\CTEX@postbichapter}
    \UseHook{eb/addbitocline/begin}
    \tl_if_eq:NnTF \g__eb_bilist_permute_value_tl { mix }
      { \addcontentsline{toc}{#1} }
      { \addcontentsline{tec}{#1} }
      { \use:c { CTEX@#1@tocline }{#1}{#2} }
    \group_end:
  }
\cs_new_protected:Npn \eb@register@bititle #1
  {
    \providecounter{bi#1}
    \exp_args:Nc \DeclareDocumentCommand { bi#1 }{sO{##3}mm}
      {
        \IfBooleanTF{##1}
          {
            \use:c {#1}*{##3}
            \CTEX@addtocline{#1}{##2}
            \tl_if_empty:oF {##4} { \CTEX@addbitocline{#1}{##4} }
            \use:c { #1mark }{##2}
          }{
            \stepcounter{bi#1}
            \use:c {#1}[##2]{##3}
            \tl_if_empty:oF {##4} { \CTEX@addbitocline{#1}{##4} }
          }
      }
  }
\cs_new_protected:Npn \RegisterBititle #1
  {
    \clist_map_function:nN {#1}
      \eb@register@bititle
  }
\RegisterBititle{chapter,section,subsection}
\eb_preto_cmd:nn { @chapter }
  {
    \skip_if_eq:nnF { \eb@toc@lol@skip } { \c_zero_skip }
      { \addtocontents{lol}{\protect\addvspace{\skip_use:N \eb@toc@lol@skip}} }
  }
\cs_new_protected:Npn \CopyTitleFormat #1#2
  {
    \tl_set_eq:cc { CTEX@#1@beforeskip } { CTEX@#2@beforeskip }
    \tl_set_eq:cc { CTEX@#1@afterskip } { CTEX@#2@afterskip }
    \bool_set_eq:cc { CTEX@#1@numbering } { CTEX@#2@numbering }
    \bool_set_eq:cc { CTEX@#1@fixskip } { CTEX@#2@fixskip }
    \bool_set_eq:cc { CTEX@#1@hang } { CTEX@#2@hang }
    \bool_set_eq:cc { CTEX@#1@runin } { CTEX@#2@runin }
    \cs_set_eq:cc { CTEX@#1@tocline } { CTEX@#2@tocline }
    \tl_set_eq:cc { CTEX@#1@break } { CTEX@#2@break }
    \tl_set_eq:cc { CTEX@#1@format } { CTEX@#2@format }
    \tl_set_eq:cc { CTEX@#1@nameformat } { CTEX@#2@nameformat }
    \tl_set_eq:cc { CTEX@#1@numberformat } { CTEX@#2@numberformat }
    \tl_set_eq:cc { CTEX@#1@titleformat } { CTEX@#2@titleformat }
    \tl_set_eq:cc { CTEX@#1@aftername } { CTEX@#2@aftername }
    \tl_set_eq:cc { CTEX@#1@aftertitle } { CTEX@#2@aftertitle }
  }
\NewDocumentCommand{\NewTitleCommand}{omm}
  {
    \newcounter{#2}
    \cs_set_eq:cN { #2mark } \use_none:n
    \tl_clear:N \l__ctex_tmp_tl
    \__ctex_initial_heading:n {#2}
    \__ctex_def_heading_keys:n {#2}
    \exp_args:No \ctex_define:n { \l__ctex_tmp_tl }
    \cs_gset_protected:cpx {#2}
      {
        \exp_not:N \@startsection{#2}{#3}
          {\exp_not:c { CTEX@#2@indent }}
          {\exp_not:c { CTEX@#2@beforeskip }}
          {\exp_not:c { CTEX@#2@afterskip }}
          {\exp_not:N \normalfont\exp_not:c { CTEX@#2@format }}
      }
    \cs_new:cpn { CTEX@#2@tocline } ##1##2
      { \CTEXnumberline{##1}##2 }
    \exp_args:Nc \providecommand { ttll@#2 }{#3}
    \exp_args:Nc \providecommand { toclevel@#2 }{#3}
    \IfValueT{#1}{\CopyTitleFormat{#2}{#1}}
  }
\NewDocumentCommand{\NewTitleEntryCommand}{O{toc}m}
  {
    \cs_new_protected:cpn { #2entry } ##1
      {
        \bool_if:cTF { CTEX@#2@numbering }
          { \CTEX@ifnametrue }
          { \CTEX@ifnamefalse }
        \CTEX@makeanchor{#2*}
        \addcontentsline{#1}{#2}{\use:c { CTEX@#2@tocline }{#2}{##1}}
      }
  }

\ctex_define:nn { tools }
  {
    hyphen-figure .tl_set:N     = \l__eb_hyphen_figure_tl,
    hyphen-table .tl_set:N      = \l__eb_hyphen_table_tl,
    hyphen-lstlisting .tl_set:N = \l__eb_hyphen_lstlisting_tl,
    hyphen-equation .tl_set:N   = \l__eb_hyphen_equation_tl,
    hyphen-every .meta:n        =
      {
        hyphen-figure = {#1},hyphen-table = {#1},
        hyphen-lstlisting = {#1},hyphen-equation = {#1}
      },
    hyphen-every .initial:n     = .,
    unknown .code:n             = \eb_msg_deprecated_option:n { tools }
  }
\AtBeginDocument
  {
    \clist_map_inline:nn
      { figure,table,lstlisting,equation }
      {
        \cs_set:cpn { the#1 }
          {
            \int_compare:nNnT { \c@chapter } > { 0 }
              {
                \thechapter
                \tl_use:c { l__eb_hyphen_#1_tl }
              }
            \int_to_arabic:v { c@#1 }
          }
      }
  }

\NewDocumentCommand{\SetTocOuter}{om}
  {
    \IfNoValueTF{#1}
      {\keys_set:nn { eb/tocouter } {#2}}
      {
        \clist_if_exist:cF { l__eb_toc_outer_kv_#1_clist }
          { \clist_clear_new:c { l__eb_toc_outer_kv_#1_clist } }
        \clist_put_right:cn { l__eb_toc_outer_kv_#1_clist } {#2}
      }
  }
\tl_new:N \eb@bitoc@title
\bool_new:N \l__eb_toc_notitle_bool
\newbool{bitoc}
\cs_new:Npn \ebifbitoc { \ifbool{bitoc} }
\seq_new:N \l__eb_level_tmpa_seq
\tl_new:N \l__eb_level_tmpa_tl
\cs_generate_variant:Nn \regex_extract_all:nnN { no }
\cs_generate_variant:Nn \keys_define:nn { nx }
\cs_generate_variant:Nn \ctex_set:nn { ox }
\cs_new_protected:Npn \eb_toc_extract_level:
  {
    \regex_extract_all:noN { \cC. } { \eb@toc@title@level }
      \l__eb_level_tmpa_seq
    \seq_get_right:NN \l__eb_level_tmpa_seq \l__eb_level_tmpa_tl
    \tl_set:Nx \l__eb_level_tmpa_tl
      {
        \exp_last_unbraced:No
          \cs_to_str:N { \l__eb_level_tmpa_tl }
      }
    \regex_replace_case_once:nN
      {
        { ^bi(.*) } { \1 }
        { .* } { \0 }
      }
      \l__eb_level_tmpa_tl
  }
\keys_define:nn { eb/tocouter }
  {
    level .code:n       =
      {
        \tl_set:Nn \eb@toc@title@level {#1}
        \eb_toc_extract_level:
      },
    level .initial:x    =
      {
        \bool_if:NTF \l__eb_class_mode_book_bool
          { \exp_not:N \bichapter* }
          { \exp_not:N \bisection* }
      },
    section .meta:n     = { level = \bisection* },
    chapter .meta:n     = { level = \bichapter* },
    none .code:n        =
      {
        \tl_set:Nn \eb@toc@title@level
          { \par\use_none:nn }
        \bool_set_true:N \l__eb_toc_notitle_bool
      },
    multoc .int_set:N   = \l__eb_toc_columns_int,
    multoc .default:n   = 2,
    multoc .initial:n   = 1,
    plan .choice:,
    plan .value_required:n = true,
    plan/cn .code:n     =
      {
        \bool_set_true:N \l__eb_toc_plan_cn_bool
        \bool_set_false:N \l__eb_toc_plan_bi_bool
      },
    plan/bi .code:n     =
      {
        \bool_set_false:N \l__eb_toc_plan_cn_bool
        \bool_set_true:N \l__eb_toc_plan_bi_bool
      },
    plan/both .code:n   =
      {
        \bool_set_true:N \l__eb_toc_plan_cn_bool
        \bool_set_true:N \l__eb_toc_plan_bi_bool
      },
    plan .initial:n     = cn,
    columns .meta:n     = { multoc = {#1} },
    title .code:n       = \eb_assign_toc_title:n {#1},
    bilist .code:n      =
      {
        \tl_gset:Nn \g__eb_bilist_permute_value_tl {#1}
        \str_if_eq:nnTF {#1} { mix }
          {
            \AddToHook{cmd/CTEX@addtocline/before}[bitoc]
              {\addtocontents{toc}{\boolfalse{bitoc}}}
            \AddToHook{cmd/CTEX@addbitocline/before}[bitoc]
              {\addtocontents{toc}{\booltrue{bitoc}}}
          }
          {
            \IfHookEmptyTF{cmd/CTEX@addtocline/before}{}
              {
                \RemoveFromHook{cmd/CTEX@addtocline/before}[bitoc]
                \RemoveFromHook{cmd/CTEX@addbitocline/before}[bitoc]
              }
          }
      },
    name .tl_set:N      = \l__eb_print_index_name_tl,
    name .initial:n     = \imki@jobname,
    unknown .code:n     =
      {
        \ctex_set:ox { \l__eb_level_tmpa_tl }
          { \eb_unknown_kv_handle: }
      },
    unknown .default:V  = \c_novalue_tl
  }

\NewDocumentCommand{\eb_assign_toc_title:n}
  {>{\SplitArgument{1}{,}}m}
  {\eb_toc_assign_title_judge:nn #1}
\cs_new_protected:Npn \eb_toc_assign_title_judge:nn #1#2
  {
    \tl_set:Nn \eb@toc@title {#1}
    \tl_if_novalue:nTF {#2}
      { \tl_clear:N \eb@bitoc@title }
      { \tl_set:Nn \eb@bitoc@title {#2} }
  }
\cs_new_protected:Npn \eb_toc_start_multi_column_ext:n #1
  {
    \int_compare:nNnTF { \l__eb_toc_columns_int } > { 1 }
      {
        \begin{multicols}{\int_use:N \l__eb_toc_columns_int}
          \@starttoc{#1}
        \end{multicols}
      }
      { \@starttoc{#1} }
  }
\cs_new_protected:Npn \eb_toc_if_title_between_hook:nn #1#2
  {
    \IfBooleanF{#1}
      {\tl_use:c { l__eb_toc_#2_between_hook_tl }}
  }
\cs_new_protected:Npn \eb_toc_title_level_cmd:n #1
  {
    \IfBooleanTF{#1}
      {\par}
      {
        \tl_if_exist:NTF \eb@toc@title
          { \eb@toc@title@level{\eb@toc@title}{\eb@bitoc@title} }
          { \par }
      }
  }
\cs_generate_variant:Nn \keys_set:nn { nv }
\cs_new_protected:Npn \eb_toc_outer_kv_initial:n #1
  {
    \clist_if_exist:cT { l__eb_toc_outer_kv_#1_clist }
      { \keys_set:nv { eb/tocouter } { l__eb_toc_outer_kv_#1_clist } }
  }
\cs_new_protected:Npn \eb_toc_list_struct_parse:nnnnn #1#2#3#4#5
  {
    \group_begin:
    \tl_set_eq:Nc \eb@toc@title { list#4name }
    \eb_toc_outer_kv_initial:n {#5}
    \IfValueT{#3}{\keys_set:nn { eb/tocouter } {#3}}
    \eb_toc_title_level_cmd:n {#1}
    \eb_toc_if_title_between_hook:nn {#1} {#4}
    \eb_toc_start_multi_column_ext:n {#5}
    \group_end:
  }
\cs_new:Npn \listnumberline #1
  {
    \protect\numberline
      {
        \exp_args:Nnv
        \use:c { p@#1 } { the#1 }
      }
  }
\cs_new_protected:Npn \DeclareFloatList #1#2
  {
    \exp_args:Nc \DeclareDocumentCommand { listof#1s }{st++o}
      {\eb_toc_list_struct_parse:nnnnn {##1} {##2} {##3} {#1} {#2}}
    \ctex_define:n
      {
        #1 .meta:nn           = { ctex/#1 } {##1},
        #1/between .tl_set:c  = l__eb_toc_#1_between_hook_tl,
        #1/between .initial:n = \bool_if:NT \l__eb_class_mode_book_bool { \vspace*{-10pt} },
        #1/tocline .cs_set:cp = { eb@tocline@#1 } ##1##2,
        #1/tocline .initial:n = \listnumberline{##1}##2
      }
  }
\DeclareFloatList{table}{lot}
\DeclareFloatList{figure}{lof}
\DeclareFloatList{lstlisting}{lol}
\cs_gset:Npn \caption@@@addcontentsline #1#2#3#4
  {
    \addcontentsline{#1}{#2}
      {
        \cs_if_exist_use:cTF { eb@tocline@#2 }
          { {#2}{#4} }
          { \protect\numberline{#3}{#4} }
      }
  }
\cs_new_protected:Npn \AssignCaptionExt #1#2
  {
    \clist_map_inline:nn {#1}
      { \eb@assign@caption@ext{##1}{#2} }
  }
\cs_new_protected:Npn \eb@assign@caption@ext #1#2
  { \tl_set:cn { ext@#1 } {#2} }
\cs_set_eq:NN \AllotCaptionExt \AssignCaptionExt
\ctex_define:n
  {
    bicontentsname .tl_set:N  = \bicontentsname,
    bicontentsname .initial:n = Contents
  }
\RenewDocumentCommand{\tableofcontents}{st++o+D(){}}
  {
    \group_begin:
    \tl_set_eq:NN \eb@toc@title \contentsname
    \tl_set_eq:NN \eb@bitoc@title \bicontentsname
    \bool_if:NF \l__eb_toc_notitle_bool
      {
        \tl_set:Nn \eb@toc@title@level
          {
            \bool_if:NTF \l__eb_class_mode_book_bool
              { \chapter* }
              { \section* }
          }
      }
    \eb_toc_outer_kv_initial:n { toc }
    \IfValueT{#3}{\keys_set:nn { eb/tocouter } {#3}}
    \bool_if:NT \l__eb_toc_plan_cn_bool
      {
        \IfBooleanF{#1}{\eb@toc@title@level{\eb@toc@title}{}}
        \eb_toc_if_title_between_hook:nn {#1} { title }
        \eb_toc_start_multi_column_ext:n { toc }#4
      }
    \bool_if:NT \l__eb_toc_plan_bi_bool
      {
        \tl_if_eq:NnF \g__eb_bilist_permute_value_tl { mix }
          {
            \IfBooleanF{#1}{\eb@toc@title@level{\eb@bitoc@title}{}}
            \eb_toc_if_title_between_hook:nn {#1} { bititle }
            \eb_toc_start_multi_column_ext:n { tec }
          }
      }
    \group_end:
  }

\RenewDocumentCommand{\contentsuse}{O{-1000}mm}
  {
    \clist_map_inline:nn {#2}
      { \eb@contents@use{#1}{##1}{#3} }
  }
\cs_new_protected:Npn \eb@contents@use #1#2#3
  {
    \tl_set:cn { ttlx@#2 } {#3}
    \tl_set:cn { ttll@#2 } {#1}
    \tl_if_exist:cF { l__eb_contents_use_#2_#3_tl }
      {
        \tl_put_right:Nn \ttl@finishall
          { \@writefile{#3}{\contentsfinish} }
      }
    \tl_set:cn { l__eb_contents_use_#2_#3_tl } { used }
  }
\contentsuse{lstlisting}{lol}
\ctex_at_end_package:nn { hyperref }
  {
    \cs_if_exist:NTF \Hy@toclinkstart
      { \cs_set:Npn \hytoclink #1 { \Hy@toclinkstart #1\Hy@toclinkend } }
      { \cs_set_eq:NN \hytoclink \use:n }
  }
\seq_put_left:Nn  \c__ctex_headings_seq { chapter }
\seq_put_right:Nn \c__ctex_headings_seq { table }
\seq_put_right:Nn \c__ctex_headings_seq { figure }
\seq_put_right:Nn \c__ctex_headings_seq { lstlisting }
\seq_remove_duplicates:N \c__ctex_headings_seq
\cs_new_protected:Npn \eb_toc_format_define:n #1
  {
    \ctex_define:n
      {
        #1 .meta:nn             = { ctex/#1 } {##1},
        #1/tocformat .tl_set:c  = l__eb_toc_#1_format_tl,
        #1/tocformat+ .code:n   = \tl_put_right:cn { l__eb_toc_#1_format_tl } {##1},
        #1/tocformat~+ .code:n  = \tl_put_right:cn { l__eb_toc_#1_format_tl } {##1},
        #1/tocformat* .tl_set:c = l__eb_toc_#1_entry_nolabel_tl,
        #1/tocindent .tl_set:c  = l__eb_toc_#1_indent_tl,
        #1/toclabel .cs_set:cp  = { eb_toc_entry_#1:nnn } ##1##2##3,
        #1/tocrule .cs_set:cp   = { eb_toc_rule_#1:n } ##1,
        #1/tocafter .tl_set:c   = l__eb_toc_#1_after_tl,
        #1/tocbelow .tl_set:c   = l__eb_toc_#1_below_tl,
        #1/tocbegin .meta:n     = { #1/tocbelow = {##1} },
        #1/tocsep .tl_set:c     = l__eb_toc_#1_sep_tl,
        #1/tocend .tl_set:c     = l__eb_toc_#1_end_tl
      }
  }
\tl_new:N \l__eb_toc_tmpa_tl
\tl_new:N \l__eb_toc_tmpb_tl
\cs_new_protected:Npn \eb_toc_format_initial:nn #1#2
  {
    \exp_last_unbraced:Nx \titlecontents
      {
        \tl_use:N \l__eb_toc_tmpa_tl
        \exp_not:n
          {
            {#2}
            [\tl_use:c { l__eb_toc_#2_indent_tl }]
            {\tl_use:c { l__eb_toc_#2_format_tl }}
            {\use:c { eb_toc_entry_#2:nnn } { \thecontentslabel } {#2} {#1}}
            {\tl_use:c { l__eb_toc_#2_entry_nolabel_tl }}
            {\use:c { eb_toc_rule_#2:n } { \thecontentspage }}
            [\tl_use:c { l__eb_toc_#2_below_tl }]
          }
        \exp_not:o { \l__eb_toc_tmpb_tl }
      }
    \ctex_set:nn {#2}
      {
        tocformat = \IfBooleanT{#1}{\contentsmargin{0pt}},
        tocindent = 0pt,
        tocrule   = \IfBooleanTF{#1}{,~##1}{\cdottocrule},
        toclabel  =
          {
            \bool_if:NTF \l__eb_toc_entry_hang_bool
              { \IfBooleanTF{##3}{\use:n}{\contentspush} }
              { \use:n }
              {
                \bool_lazy_or:nnTF
                  { \str_if_eq_p:Vn \Hy@linktoc { 1 } }
                  { \str_if_eq_p:Vn \Hy@linktoc { 3 } }
                  { \hytoclink{##1} }
                  {##1}
                \tl_use:c { l__eb_toc_##2_after_tl }
              }
          },
        tocafter  = \hspace{1em},
        tocsep    = .—,
        tocend    = .
      }
  }
\seq_new:N \l__eb_toc_every_include_name_seq
\cs_new_protected:Npn \ExcludeEveryTocName #1
  {
    \clist_map_inline:nn {#1}
      { \seq_remove_all:Nn \l__eb_toc_every_include_name_seq {##1} }
  }
\cs_new_protected:Npn \IncludeEveryTocName #1
  {
    \clist_map_inline:nn {#1}
      {
        \seq_put_right:Nn \l__eb_toc_every_include_name_seq {##1}
        \seq_remove_duplicates:N \l__eb_toc_every_include_name_seq
      }
  }
\cs_new_protected:Npn \eb@register@toc@name #1#2
  {
    \IfBooleanT{#1}
      {
        \ctex_set:nn { toc } { between = { },bibetween = { } }
        \tl_set:Nn \l__eb_toc_tmpa_tl {*}
        \tl_set:Nn \l__eb_toc_tmpb_tl
          {
            [\tl_use:c { l__eb_toc_#2_sep_tl }]
            [\tl_use:c { l__eb_toc_#2_end_tl }]
          }
      }
    \IncludeEveryTocName{#2}
    \eb_toc_format_define:n {#2}
    \eb_toc_format_initial:nn {#1} {#2}
    \tl_clear:N \l__eb_toc_tmpa_tl
    \tl_clear:N \l__eb_toc_tmpb_tl
  }
\NewDocumentCommand{\RegisterTocName}{sm}
  {
    \clist_map_inline:nn {#2}
      { \eb@register@toc@name{#1}{##1} }
  }
\clist_set_from_seq:NN
\c__ctex_headings_clist \c__ctex_headings_seq
\exp_args:NV \RegisterTocName \c__ctex_headings_clist
\ctex_define:n { float/unknown .code:n = \eb_msg_deprecated_option:n { float } }
\cs_new_protected:Npn \eb@register@every@toc@option #1
  {
    \ctex_define:nn { toc }
      {
        #1-every .code:n =
          {
            \seq_map_inline:Nn \l__eb_toc_every_include_name_seq
              { \ctex_set:n { ####1/#1 = {##1} } }
          }
      }
  }
\cs_new_protected:Npn \RegisterEveryTocOption #1
  {
    \clist_map_function:nN {#1}
      \eb@register@every@toc@option
  }
\RegisterEveryTocOption{tocafter,tocindent,tocrule}
\NewDocumentCommand{\tocrule}{st-O{0.6pc}d()mO{}}
  {
    \normalsize\normalfont
    \ttl@row@i[#3]{\IfValueTF{#4}{\scalebox{#4}{#5}}{#5}}#6
      {
        \IfBooleanF{#2}
          {
            \IfBooleanTF{#1}
              {\thecontentspage}
              {
                \bool_if:NTF \l__eb_toc_dot_align_bool
                  { \contentspage }
                  { \thecontentspage }
              }
          }
      }
  }
\cs_set:Npn \cdottocrule { \tocrule{\textperiodcentered} }
\ctex_define:nn { toc }
  {
    lolskip .skip_set:N   = \eb@toc@lol@skip,
    lolskip .initial:n    = 10pt,
    between .tl_set:N     = \l__eb_toc_title_between_hook_tl,
    between .initial:n    = \bool_if:NT \l__eb_class_mode_book_bool { \vspace*{-1pc} },
    bibetween .tl_set:N   = \l__eb_toc_bititle_between_hook_tl,
    bibetween .initial:n  = \bool_if:NT \l__eb_class_mode_book_bool { \vspace*{-1pc} },
    dotalign .bool_set:N  = \l__eb_toc_dot_align_bool,
    dotalign .default:n   = true,
    dotalign .initial:n   = true,
    hang .bool_set:N      = \l__eb_toc_entry_hang_bool,
    hang .default:n       = true,
    hang .initial:n       = true,
    pagenumwd .code:n     = \contentsmargin{#1},
    pagenumwd .initial:n  = 1.55em,
    unknown .code:n       = \eb_msg_deprecated_option:n { toc }
  }

\NewHookWithArguments{eb/starttoc/end}{1}
\AddToHookWithArguments{eb/starttoc/end}[aux]
  {
    \AddToHook{enddocument/afterlastpage}
      {
        \ifbool{@filesw}
          {
            \tl_if_exist:cF { tf@#1 }
              { \iow_new:c { tf@#1 }\iow_open:cn { tf@#1 } { \jobname.#1 } }
          }{}
      }
  }
\cs_set_eq:NN \eb@starttoc \@starttoc
\cs_set:Npn \@starttoc #1
  {
    \cs_if_exist:NTF \UseHookWithArguments
      {
        \group_begin:
        \makeatletter
        \file_if_exist_input:n { \jobname.#1 }
        \UseHookWithArguments{eb/starttoc/end}{1}{#1}
        \boolfalse{@nobreak}
        \group_end:
      }
      { \eb@starttoc{#1} }
  }
\cs_set_protected:Npn \AssignPartialExt #1#2
  {
    \tl_if_exist:cTF { ttl@partial#1 }
      { \msg_warning:nnnn { easybase } { repeated-ptoc } {#1} {#2} }
      {
        \tl_set:cn { ttl@partial#1 } {#2}
        \AddToHookWithArguments{cmd/ttl@writepartial/before}[ttl/#1]
          {\ttl@topartial{#1}{##1}{##2}}
      }
  }
\cs_set_eq:NN \AllotPartialExt \AssignPartialExt
\msg_new:nnn { easybase } { repeated-ptoc }
  {
    Local~directory~file~'#2'~of~directory~type~'#1'~is \\
    repeatedly~allocated.
  }
\AssignPartialExt{lol}{pll}

\cs_new_protected:Npn \RegisterTitleIfname #1
  {
    \clist_map_function:nN {#1}
      \eb@register@title@ifname
  }
\cs_new_protected:Npn \eb@register@title@ifname #1
  {
    \AddToHookWithArguments{cmd/addcontentsline/before}[title/ifname/#1]
      {
        \str_if_eq:nnT {##1} {#1}
          {
            \addtocontents{##1}
              {\CTEXifname{\CTEX@ifnametrue}{\CTEX@ifnamefalse}}
          }
      }
    \AddToHook{file/\jobname.#1/before}
      {\cs_set_eq:NN \eb@title@ifname@resume \CTEXifname}
    \AddToHook{file/\jobname.#1/after}
      {\cs_set_eq:NN \CTEXifname \eb@title@ifname@resume}
  }
\RegisterTitleIfname{toc}

\cs_new_protected:Npn \SetTocStyle #1#2#3
  {
    \clist_map_inline:nn {#1}
      { \eb@set@toc@style{##1}{#2}{#3} }
  }
\cs_new_protected:Npn \eb@set@toc@style #1#2#3
  {
    \cs_set_protected:cpn { eb@toc@style@set@#1@#2 }
      { \ctex_set:nn {#1} {#3} }
  }
\cs_new_protected:Npn \UseTocStyle #1#2#3
  {
    \clist_map_inline:nn {#1}
      { \eb@use@toc@style{##1}{#2}{#3} }
  }
\cs_new_protected:Npn \eb@use@toc@style #1#2#3
  {
    \cs_if_exist:cTF { eb@toc@style@set@#1@#2 }
      { \addtocontents{#3}{\string\csuse{eb@toc@style@set@#1@#2}} }
      { \msg_warning:nnnn { easybase } { undefined-toc-style } {#2} {#1} }
  }
\msg_new:nnn { easybase } { undefined-toc-style }
  { The~contents~style~'#1'~of~'#2'~is~not~defined. }

\ctex_set:n
  {
    part          =
      {
        tocformat = \addvspace{1pc}\sffamily\large,
        tocindent = 0pt,
        tocrule   = \tocrule{}[\bfseries],
        tocline   = \CTEXnumberline{#1}#2
      },
    chapter       =
      {
        tocformat = \addvspace{1pc}\sffamily,
        tocindent = 0pt,
        tocrule   = \cdottocrule[\bfseries],
        tocline   = \CTEXnumberline{#1}#2
      },
    section       =
      {
        tocformat = \bool_if:NF \l__eb_class_mode_book_bool { \sffamily },
        tocindent = \bool_if:NTF \l__eb_class_mode_book_bool { 1.5em } { 0pt },
        tocrule   =
          {
            \bool_if:NTF \l__eb_class_mode_book_bool
              { \cdottocrule }
              { \cdottocrule[\bfseries] }
          }
      },
    subsection    =
      { tocindent = \bool_if:NTF \l__eb_class_mode_book_bool { 3.8em } { 1.5em } }
  }

\ctex_at_end_package:nn { imakeidx }
  {
    \RenewDocumentCommand{\printindex}{st++o}
      {
        \group_begin:
        \tl_set_eq:NN \eb@toc@title \indexname
        \cs_set_eq:NN \imki@indexlevel \use_none:n
        \IfValueT{#3}{\keys_set:nn { eb/tocouter } {#3}}
        \cs_set_protected:Npn \imki@indexheaders
          {
            \eb_toc_title_level_cmd:n {#1}
            \cs_set_eq:NN \thispagestyle \use_none:n
          }
        \imki@putindex{\l__eb_print_index_name_tl}
        \group_end:
      }
  }
\ctex_define:nn { chapter }
  {
    biname .code:n      = \ctex_assign_heading_name:nn { bichapter } {#1},
    biname .initial:n   = Chapter\space,
    binumber .tl_set:N  = \CTEX@bichapter@number,
    binumber .initial:n = \arabic{chapter}
  }
\cs_new_protected:Npn \eb_counter_zero:n #1
  { \clist_map_inline:nn {#1} { \setcounter{##1}{0} } }
\RenewDocumentCommand{\appendix}
  {O{Appendix\space}D(){\Alph{chapter}}}
  {
    \ctex_assign_heading_name:nn { biappendix } {#1}
    \bool_if:NTF \l__eb_class_mode_book_bool
      {
        \AddToHook{eb/addbitocline/begin}[chapter]
          {
            \def\CTEX@prechapter{\CTEX@prebiappendix}
            \def\CTEX@thechapter{#2}
            \def\CTEX@postchapter{\CTEX@postbiappendix}
          }
        \gdef\thechapter{\@Alph\c@chapter}
        \gdef\thebichapter{\@Alph\c@bichapter}
        \gdef\CTEX@prechapter{\CTEX@preappendix}
        \gdef\CTEX@thechapter{\CTEX@appendix@number}
        \gdef\CTEX@postchapter{\CTEX@postappendix}
        \gdef\CTEX@chapter@numbering{\CTEX@appendix@numbering}
        \eb_counter_zero:n { chapter,section,bichapter,bisection }
      }
      {
        \gdef\thesection{\@Alph\c@section}
        \gdef\thebisection{\@Alph\c@bisection}
        \gdef\CTEX@presection{\CTEX@preappendix}
        \gdef\CTEX@thesection{\CTEX@appendix@number}
        \gdef\CTEX@postsection{\CTEX@postappendix}
        \gdef\CTEX@section@numbering{\CTEX@appendix@numbering}
        \ctex_set:nn { appendix } { number = \@Alph\c@section,name = { } }
        \eb_counter_zero:n { section,subsection,bisection,bisubsection }
      }
  }

\ctex_define:nn { font }
  {
    caption-table .tl_set:N       = \l__eb_font_caption_table_tl,
    caption-figure .tl_set:N      = \l__eb_font_caption_figure_tl,
    caption-lstlisting .tl_set:N  = \l__eb_font_caption_lstlisting_tl,
    caption-every .meta:n         =
      {
        caption-table = {#1},caption-figure = {#1},
        caption-lstlisting = {#1}
      },
    caption-every .initial:n      = \sffamily\small,
    footnote .tl_set:N            = \eb@font@footnote,
    marginpar .tl_set:N           = \marginfont,
    marginpar .initial:n          = \footnotesize,
    unknown .code:n               = \eb_msg_deprecated_option:n { font }
  }
\cs_new_protected:Npn \ebaddtofont #1#2
  {
    \str_case:nn {#1}
      {
        { table }
        { \tl_put_right:Nn \l__eb_font_caption_table_tl {#2} }
        { figure }
        { \tl_put_right:Nn \l__eb_font_caption_figure_tl {#2} }
        { lstlisting }
        { \tl_put_right:Nn \l__eb_font_caption_lstlisting_tl {#2} }
        { every }
        {
          \tl_put_right:Nn \l__eb_font_caption_table_tl {#2}
          \tl_put_right:Nn \l__eb_font_caption_figure_tl {#2}
          \tl_put_right:Nn \l__eb_font_caption_lstlisting_tl {#2}
        }
        { footnote }
        { \tl_put_right:Nn \eb@font@footnote {#2} }
        { marginpar }
        { \tl_put_right:Nn \marginfont {#2} }
      }
  }
\cs_set_eq:NN \addtosubfont \ebaddtofont

\cs_new_protected:Npn \usestretch #1
  {
    \edef\baselinestretch{#1}
    \@currsize
  }
\cs_set_eq:NN \setspread \usestretch
\cs_new_protected:Npn \restore@usespace
  {
    \par
    \vskip\parskip
    \vskip\baselineskip
    \endgroup
    \vskip -\parskip
    \vskip -\baselineskip
  }
\NewDocumentEnvironment{usespace}{m+b}
  {
    \par
    \begingroup
    \usestretch{#1}#2
    \restore@usespace
  }{}
\msg_new:nnn { easybase } { invalid-spread }
  {
    The~line~spacing~factor~option~'#1'~is~invalid. \\
    Please~use~the~'usespace'~environment~to~set~the~line~spacing.
  }
\cs_new_protected:Npn \eb_invalid_spread_warning:
  { \msg_warning:nnV { easybase } { invalid-spread } \l_keys_key_str }
\ctex_define:nn { space }
  {
    linespread .code:n          = \usestretch{#1},
    tabspread .code:n           = \eb_invalid_spread_warning:,
    mathspread .code:n          = \eb_invalid_spread_warning:,
    fntspread .code:n           =
      {
        \tl_set:Nn \eb@spread@footnote {#1}
        \group_begin:
        \footnotesize
        \usestretch{\eb@spread@footnote}
        \exp_args:NNNo \group_end:
        \dim_set:Nn \footnotesep { \dim_use:N \box_ht:N \strutbox }
      },
    fntspread .initial:n        = 1.2,
    captab-spread .fp_set:N     = \l__eb_spread_caption_table_fp,
    capfig-spread .fp_set:N     = \l__eb_spread_caption_figure_fp,
    caplst-spread .fp_set:N     = \l__eb_spread_caption_lstlisting_fp,
    caption-spread .meta:n      =
      {
        captab-spread = {#1},capfig-spread = {#1},
        caplst-spread = {#1}
      },
    caption-spread .initial:n   = 1.2,
    everyspread .meta:n         =
      {
        linespread = {#1},caption-spread = {#1},
        fntspread = {#1}
      },
    abovedisplayskip .code:n    =
      { \AfterPreamble{\skip_set:Nn \abovedisplayskip {#1}} },
    abovedisplayskip .initial:n = 0.5ex plus .1ex minus .1ex,
    belowdisplayskip .code:n    =
      {
        \AfterPreamble
          {
            \skip_set:Nn \belowdisplayskip {#1}
            \skip_set:Nn \belowdisplayshortskip {#1}
          }
      },
    belowdisplayskip .initial:n = 0.5ex plus .1ex minus .1ex,
    unknown .code:n             = \eb_msg_deprecated_option:n { space }
  }
\tl_if_eq:NnT \l__ctex_scheme_tl { chinese }
  {
    \fp_compare:nNnTF { \l__ctex_line_spread_fp } = { 1.3 }
      { \usestretch{1.354} }
      { \usestretch{\fp_use:N \l__ctex_line_spread_fp} }
  }
\AfterPreamble{\skip_set:Nn \abovedisplayshortskip { 0ex plus .1ex }}

\cs_new_protected:Npn \eb@register@cap@options #1
  {
    \ctex_define:nn { cap }
      {
        #1/unknown .code:n    =
          {
            \use:x
              {
                \exp_not:N \captionsetup[#1]
                  { \eb_unknown_kv_handle: }
              }
          },
        #1/unknown .default:V = \c_novalue_tl,
        #1 .meta:nn           = { ctex/cap/#1 } {##1}
      }
  }
\cs_new_protected:Npn \RegisterCapOptions #1
  {
    \clist_map_function:nN {#1}
      \eb@register@cap@options
  }
\RegisterCapOptions{table,figure,lstlisting}
\clist_map_inline:nn
  { table,figure,lstlisting }
  {
    \DeclareCaptionFont{eb@#1@font}
      {
        \usestretch{\fp_use:c { l__eb_spread_caption_#1_fp }}
        \tl_use:c { l__eb_font_caption_#1_tl }
      }
  }
\captionsetup
  {
    format          = hang,
    labelfont       = {color = ctex@frame},
    labelsep        = quad,
    hypcap          = false,
    singlelinecheck = true
  }
\captionsetup[table]{font = eb@table@font}
\captionsetup[figure]{font = eb@figure@font}
\captionsetup[lstlisting]{font = eb@lstlisting@font}
\ctex_at_end_package:nn { bicaption }
  {
    \captionsetup[figure][bi-second]{name = Figure}
    \captionsetup[table][bi-second]{name = Table}
  }
\UseTblrLibrary{booktabs}
\bool_if:NF \l__eb_float_page_bool
  {
    \tl_gset:Nn \textfraction { 0.1 }
    \tl_gset:Nn \topfraction { 0.9 }
    \tl_gset:Nn \bottomfraction { 0.9 }
    \tl_gset:Nn \floatpagefraction { 0.9 }
    \tl_gset:Nn \dbltopfraction { 0.9 }
    \tl_gset:Nn \dblfloatpagefraction { 0.9 }
  }
\skip_set:Nn \textfloatsep { 12pt plus 4pt minus 3pt }
\skip_set:Nn \dbltextfloatsep { 12pt plus 4pt minus 3pt }
\skip_set:Nn \multicolsep { 12pt plus 4pt minus 3pt }
\setcounter{topnumber}{4}
\setcounter{bottomnumber}{4}
\setcounter{totalnumber}{8}

\dim_new:N \hangwd
\cs_set_protected:Npn \hangpara #1#2
  {
    \dim_set:Nn \hangindent {#1}
    \int_set:Nn \hangafter {#2}
    \noindent\ignorespaces
  }
\NewDocumentCommand{\hangfrom}{sO{\hangwd}mO{1}}
  {
    \hbox_set:Nn \l_tmpa_box {#3}
    \dim_set:Nn \hangwd { \box_wd:N \l_tmpa_box }
    \hangpara{#2}{#4}
    \IfBooleanTF{#1}
      {\hbox_to_wd:nn {#2} { }}
      {\box_use_drop:N \l_tmpa_box}
    \ignorespaces
  }
\DeclareDocumentEnvironment{hangparas}{mm+b}
  {
    \dim_zero:N \parindent
    \everypar{\hangpara{#1}{#2}}#3\par
  }{}
\cs_new_protected:Npn \eb_enumitem_label_set:nn #1#2
  { \SetEnumitemValue{label}{#1}{\color{ctex@emph}#2} }
\clist_map_inline:nn
  {
    { bullet } { \textbullet },
    { endash } { \normalfont\bfseries\textendash },
    { asterisk } { \textasteriskcentered },
    { arabic } { \arabic*. },
    { alph } { (\alph*) },
    { roman } { \roman*. }
  }
  { \eb_enumitem_label_set:nn #1 }
\SetEnumitemValue{font}{sf}{\color{ctex@emph}\normalfont\sffamily}
\SetEnumitemValue{ref}{enumii}{\arabic{enumi}.\alph*}
\SetEnumitemValue{ref}{enumiii}{\arabic{enumi}.\alph{enumii}.\roman*}
\setlist{nosep,labelsep = 0.5em,listparindent = \parindent}
\setlist[1]{leftmargin = *,align = left}
\setlist[itemize,1]{label = bullet}
\setlist[itemize,2]{label = endash}
\setlist[itemize,3]{label = asterisk}
\setlist[enumerate,1]{label = arabic,ref = \arabic*}
\setlist[enumerate,2]{label = alph,ref = enumii}
\setlist[enumerate,3]{label = roman,ref = enumiii}
\setlist[description]{font = sf,style = standard}
\newlist{eb@eqcomp@list}{description}{1}
\setlist[eb@eqcomp@list]{nosep,labelsep = 0pt}
\cs_new:Npn \seteqcomplist #1 { \setlist*[eb@eqcomp@list]{#1} }

\keys_define:nn { eb/eqcomp }
  {
    width .dim_set:N        = \l__eb_eqsymb_width_dim,
    width .initial:n        = 10pt,
    delim .tl_set:N         = \l__eb_eqsymb_delim_tl,
    delim .initial:n = \tl_if_eq:NnTF \l__ctex_scheme_tl { chinese } { —— } { --- },
    space .dim_set:N        = \l__eb_eqsymb_space_dim,
    space .initial:n        = 0.25em,
    item-align .tl_set:N    = \l__eb_eqsymb_item_align_tl,
    item-align .initial:n   = r,
    delim-align .tl_set:N   = \l__eb_eqsymb_delim_align_tl,
    delim-align .initial:n  = c,
    enumitem .code:n        = \seteqcomplist{#1},
    intro .tl_set:N         = \l__eb_eqsymb_intro_tl,
    font .tl_set:N          = \l__eb_eqsymb_font_tl,
    mode .tl_set:N          = \l__eb_eqsymb_mode_tl,
    mode .initial:n         = math
  }
\cs_new_protected:Npn \seteqcomp #1
  { \keys_set:nn { eb/eqcomp } {#1} }

\cs_new_protected:Npn \eb_eqsymb_left_margin_calc:
  {
    \hbox_set:Nn \l_tmpa_box { \l__eb_eqsymb_delim_tl }
    \hbox_set:Nn \l_tmpb_box { \l__eb_eqsymb_intro_tl }
    \dim_set:Nn \l_tmpa_dim
      {
        \box_wd:N \l_tmpb_box +
        \l__eb_eqsymb_width_dim +
        \box_wd:N \l_tmpa_box +
        2\l__eb_eqsymb_space_dim
      }
  }
\NewDocumentEnvironment{eqcomp}{oD(){}+b}
  {
    \IfValueT{#1}{\keys_set:nn { eb/eqcomp } {#1}}
    \eb_eqsymb_left_margin_calc:
    \begin{eb@eqcomp@list}[#2]
      #3
    \end{eb@eqcomp@list}
  }{}
\cs_new_protected:Npn \eb_eqsymb_format_mark:n #1
  {
    \tl_use:N \l__eb_eqsymb_font_tl
      {
        \tl_if_eq:NnT \l__eb_eqsymb_mode_tl { math }
          { \ensuremath }{#1}
      }
  }
\cs_new_protected:Npn \eb_eqsymb_space_delim:nn #1#2
  {
    \hspace{\l__eb_eqsymb_space_dim}
    \IfBooleanTF{#1}
      {\makebox{#2}}
      {\makebox[\box_wd:N \l_tmpa_box][\l__eb_eqsymb_delim_align_tl]{#2}}
    \hspace{\l__eb_eqsymb_space_dim}
  }
\cs_new_protected:Npn \eb@itembox { \item[]\makebox }
\NewDocumentCommand{\symb}{smO{\l__eb_eqsymb_delim_tl}}
  {
    \IfBooleanTF{#1}
      {
        \eb_eqsymb_format_mark:n {#2}
        \eb_eqsymb_space_delim:nn {#1} {#3}
      }
      {
        \eb@itembox[\l_tmpa_dim]
          {
            \makebox[\box_wd:N \l_tmpb_box]{\l__eb_eqsymb_intro_tl}
            \makebox[\l__eb_eqsymb_width_dim][\l__eb_eqsymb_item_align_tl]
              {\eb_eqsymb_format_mark:n {#2}}
            \eb_eqsymb_space_delim:nn {#1} {#3}
          }
      }
    \tl_clear:N \l__eb_eqsymb_intro_tl
    \ignorespaces
  }

\cs_new:Npn \eb_tl_exist_noempty:cT #1#2
  { \tl_if_exist:cT {#1} { \tl_if_empty:cF {#1} {#2} } }
\cs_new_protected:Npn \eb_theorem_load_thmtools:
  {
    \RequirePackage{amsthm,thmtools}
    \cs_set_eq:NN \eb@declaretheoremstyle@save \declaretheoremstyle
    \cs_set_eq:NN \eb@declaretheorem@save \declaretheorem
    \RenewDocumentCommand{\declaretheoremstyle}{+O{}m+O{}}
      {\eb@declaretheoremstyle@save[##1,##3]{##2}}
    \RenewDocumentCommand{\declaretheorem}{+O{}m+O{}}
      {
        \cs_undefine:c {##2}
        \undefinecounter{##2}
        \eb_tl_exist_noempty:cT { g__eb_thmt_##2_parent_tl }
          {
            \exp_args:Nnv \@removefromreset {##2}
              { g__eb_thmt_##2_parent_tl }
          }
        \eb@declaretheorem@save[style = default,##1,##3]{##2}
        \tl_gset:cV { g__eb_thmt_##2_parent_tl } \thmt@parent
        \settheoremtocline{##2}
          {
            \listnumberline{##2}
            \thmtname\thmtifnote{~(\thmtnote)}{}
          }
        \cs_gset:cpn { thmt@contentsline@##2 }
          { \thmt@contentslineIfNamed }
        \exp_args:Nc \providecommand { p@##2 }[1]{####1}
      }
    \ctex_define:nn { thmt }
      {
        loeskip .skip_set:N = \eb@thmt@loe@skip,
        loeskip .initial:n  = 10pt,
        unknown .code:n     = \eb_msg_deprecated_option:n { thmt }
      }
    \declaretheoremstyle{default}[
      spaceabove    = 0ex plus .1ex,
      spacebelow    = 0ex plus .1ex,
      headindent    = 0pt,
      within        = \bool_if:NT \l__eb_class_mode_book_bool { chapter },
      headpunct     = { },
      headfont      = \color{ctex@emph}\sffamily,
      bodyfont      = \normalfont,
      postheadspace = 1em
      ]
    \DeclareFloatList{theorem}{loe}
    \AssignPartialExt{loe}{ple}
    \eb_preto_cmd:nn { listoftheorems }
      {
        \group_begin:
        \let\thmt@contentsline\contentsline
        \def\contentsline ##1 {\use:c { thmt@contentsline@##1 }{##1}}
      }
    \eb_appto_cmd:nn { listoftheorems } { \group_end: }
    \eb_preto_cmd:nn { @chapter }
      {
        \skip_if_eq:nnF { \eb@thmt@loe@skip } { \c_zero_skip }
          { \addtocontents{loe}{\protect\addvspace{\skip_use:N \eb@thmt@loe@skip}} }
      }
    \def\thmtlo@chaptervspacehack{}
    \def\thmt@mklistcmd{\thmtlo@newentry}
    \def\thmtname{\thmt@thmname}
    \def\thmtenvname{\thmt@envname}
    \def\thmtnote{\thmt@shortoptarg}
    \def\thmtformatoptarg ##1 {##1}
    \def\thmtifname ##1##2 {\ifbool{thmt@isstarred}{##2}{##1}}
    \def\thmtifnote ##1##2
      {
        \tl_if_empty:NTF \thmt@shortoptarg
          {##2}
          { \protect\thmtformatoptarg{##1} }
      }
    \cs_new_protected:Npn \eb@settheoremtocline ##1##2##3
      {
        \IfBooleanT{##1}{\def\thmt@contentslineIgnore{\thmt@contentsline}}
        \cs_set:cpn { ll@##2 } { \@bsphack ##3\@esphack }
      }
    \NewDocumentCommand{\settheoremtocline}{smm}
      {
        \clist_map_inline:nn {##2}
          { \eb@settheoremtocline{##1}{####1}{##3} }
      }
  }
\cs_new_protected:Npn \eb_theorem_load_keytheorems:
  {
    \RequirePackage{keytheorems}
    \DeclareFloatList{theorem}{thlist}
    \AssignPartialExt{thlist}{ple}
  }
\str_case:VnT \l__eb_theorem_support_tl
  {
    { thmtools }
    { \eb_theorem_load_thmtools: }
    { keytheorems }
    { \eb_theorem_load_keytheorems: }
  }
  { \cs_undefine:N \proof }
\cs_new_protected:Npn \eb_chem_load_chemformula:
  {
    \RequirePackage{chemformula}
    \setchemformula
      {
        charge-hshift     = 0pt,
        subscript-vshift  = -0.2ex
      }
  }
\cs_new_protected:Npn \eb_chem_load_mhchem:
  {
    \RequirePackage[version = 4]{mhchem}
    \mhchemoptions{layout = stacked}
  }
\str_case:VnF \l__eb_chem_support_tl
  {
    { chemformula }
    { \eb_chem_load_chemformula: }
    { mhchem }
    { \eb_chem_load_mhchem: }
  }
  { \RequirePackage{amsmath} }
\tl_set:Nn \fontsubfuzz { 0.5pt }
\everymath{\displaystyle}
\dim_zero_new:N \mathindent
\allowdisplaybreaks[4]
\DeclareGraphicsExtensions{.pdf,.png,.jpg,.eps,.tif}
\sisetup
  {
    number-mode           = match,
    range-phrase          = \ensuremath{\sim},
    range-units           = single,
    print-unity-mantissa  = false,
    table-alignment-mode  = none,
    group-digits          = none
  }
\ctex_at_end_package:nn { unicode-math }
  { \msg_redirect_module:nnn { unicode-math } { warning } { info } }
\ctex_at_end_package:nn { tcolorbox }
  { \file_if_exist_input:n { eb-tcolorbox.cfg } }

\NewDocumentCommand{\eb_assign_tagform:n}
  {>{\SplitArgument{1}{,}}m}
  {
    \eb_assign_tagform_pos:nn #1
    \cs_gset:Npn \tagform@ ##1
      {
        \maketag@@@
          {
            \color{ctex@emph}
            \ignorespaces
            \eb@tag@brackets@left{##1}
            \unskip\@@italiccorr
            \eb@tag@brackets@right
          }
      }
  }
\cs_new_protected:Npn \eb_assign_tagform_pos:nn #1#2
  {
    \tl_set:Nn \eb@tag@brackets@left {#1}
    \tl_set:Nn \eb@tag@brackets@right {#2}
  }
\ctex_define:nn { tools }
  {
    multoc .int_set:N     = \l__eb_toc_columns_int,
    multoc .default:n     = 2,
    withpart .bool_set:N  = \l__eb_chap_counter_withpart_bool,
    withpart .default:n   = true,
    withpart .initial:n   = false,
    uppercase .tl_set:N   = \l__eb_mark_uppercase_value_tl,
    uppercase .default:n  = all,
    uppercase .initial:n  = all,
    tagform .code:n       = \eb_assign_tagform:n {#1},
    tagform .initial:n    = { (,) },
    brackets .meta:n      = { tagform = {#1} },
    figurepath .code:n    =
      {
        \tl_if_blank:nF {#1}
          {
            \regex_match:nnTF { \cB. } {#1}
              { \graphicspath{#1} }
              { \graphicspath{{#1}} }
          }
      }
  }

\bool_new:N \l__eb_backend_bibtex_bool
\ctex_define:nn { bib }
  {
    backend .choice:,
    backend .value_required:n = true,
    backend/bibtex .code:n    = \bool_set_true:N \l__eb_backend_bibtex_bool,
    backend/biblatex .code:n  = \bool_set_false:N \l__eb_backend_bibtex_bool,
    bibstyle .tl_set:N        = \l__eb_bib_both_style_tl,
    bibstyle .initial:n       = numerical,
    citestyle .tl_set:N       = \l__eb_bib_cite_style_tl,
    datafile .clist_set:N     = \l__eb_bib_datafile_clist,
    bititle .tl_set:N         = \bibibname,
    bititle .initial:n        = Bibliography,
    unknown .code:n           = \eb_msg_deprecated_option:n { bib }
  }
\cs_new_protected:Npn \eb_bibtex_natbib_set:
  {
    \RequirePackage[sort&compress]{natbib}
    \str_case:VnTF \l__eb_bib_both_style_tl
      {
        { numerical }
        {
          \bibliographystyle{gbt7714-numerical}
          \setcitestyle{comma,square,super}
        }
        { authoryear }
        { \bibliographystyle{gbt7714-author-year} }
      }
      { \cs_set_eq:NN \cite \citep }
      { \exp_args:NV \bibliographystyle \l__eb_bib_both_style_tl }
    \tl_if_blank:VF \l__eb_bib_cite_style_tl
      { \exp_args:NV \setcitestyle \l__eb_bib_cite_style_tl }
    \NewDocumentCommand{\printbibliography}{st++o}
      {
        \group_begin:
        \tl_set_eq:NN \eb@toc@title \bibname
        \IfValueT{##3}{ \keys_set:nn { eb/tocouter } {##3} }
        \cs_set_protected:Npn \bibsection
          {
            \eb_toc_title_level_cmd:n {##1}
            \int_compare:nNnT { \l__eb_toc_columns_int } > { 1 }
              { \begin{multicols}{\int_use:N \l__eb_toc_columns_int} }
          }
        \exp_args:NV \bibliography \l__eb_bib_datafile_clist
        \group_end:
      }
    \AtEndEnvironment{thebibliography}
      {\int_compare:nNnT { \l__eb_toc_columns_int } > { 1 } { \end{multicols} }}
    \skip_zero:N \bibsep
  }
\cs_new_protected:Npn \eb_put_biblatex:n #1
  { \PassOptionsToPackage{#1}{biblatex} }
\cs_new_protected:Npn \eb_biber_toc_title:n #1
  {
    \bool_if:NTF \l__eb_class_mode_book_bool
      { \bichapter*{#1}{\bibibname} }
      { \bisection*{#1}{\bibibname} }
  }
\cs_new_protected:Npn \eb_biber_biblatex_set:
  {
    \str_case:VnF \l__eb_bib_both_style_tl
      {
        { numerical } { \use_i:nnn }
        { authoryear } { \use_ii:nnn }
      }
      { \use_iii:nnn }
      { \eb_put_biblatex:n { style = gb7714-2015 } }
      { \eb_put_biblatex:n { style = gb7714-2015ay } }
      { \eb_put_biblatex:n { style = \l__eb_bib_both_style_tl } }
    \tl_if_blank:VF \l__eb_bib_cite_style_tl
      { \eb_put_biblatex:n { citestyle = \l__eb_bib_cite_style_tl } }
    \RequirePackage[backend = biber]{biblatex}
    \clist_map_function:NN \l__eb_bib_datafile_clist \addbibresource
    \tl_gset:Nn \blx@default@theheading { bibintoc }
    \defbibheading{bibintoc}[\bibname]{\eb_biber_toc_title:n {##1}}
    \skip_zero:N \bibitemsep
    \setcounter{biburlucpenalty}{1}
    \setcounter{biburllcpenalty}{1}
    \setcounter{biburlnumpenalty}{1}
  }
\ctex_before_end_preamble:n
  {
    \providecommand{\bibname}{\refname}
    \clist_if_empty:NF \l__eb_bib_datafile_clist
      {
        \bool_if:NTF \l__eb_backend_bibtex_bool
          { \eb_bibtex_natbib_set: }
          { \eb_biber_biblatex_set: }
      }
  }

\cs_new:Npn \lstifdisplay #1#2
  { \lst@ifdisplaystyle #1\else #2\fi }
\lstdefinestyle{lst-base}
  {
    breaklines        = true,
    resetmargins      = true,
    numberstyle       = \footnotesize,
    basewidth         = 0.5em,
    columns           = flexible,
    aboveskip         = 0.5\baselineskip,
    belowskip         = 0.5\baselineskip,
    abovecaptionskip  = -1ex,
    belowcaptionskip  = 2ex,
    keepspaces        = true,
    escapeinside      = {(*}{*)},
    frame             = single,
    framerule         = 0.5pt,
    framesep          = 4.5pt,
    xleftmargin       = 5pt,
    xrightmargin      = 5pt,
    rulecolor         = \color{ctex@frame},
    commentstyle      = \color{SlateGray},
    emphstyle         = \color{ctex@emph}
  }
\lstdefinestyle{lst-latex}
  {
    style         = lst-base,
    language      = [LaTeX]TeX,
    texcsstyle    = *\color{ctex@verb}\lstifdisplay{\bfseries}{},
    basicstyle    = \ttfamily\lstifdisplay{\small}{\color{ctex@verb}},
    keywordstyle  = \color{ctex@verb}\lstifdisplay{\bfseries}{}
  }
\lstset{style = lst-latex}
\lstloadlanguages{C,C++,Java,Python,Matlab}

\clist_new:N \l__eb_hyperref_clist
\cs_new_protected:Npn \eb_set_hyperref:n #1
  {
    \IfPackageLoadedTF{hyperref}
      {\hypersetup}
      {\eb_put_hyperref:n}{#1}
  }
\cs_new_protected:Npn \eb_put_hyperref:n #1
  { \clist_put_right:Nn \l__eb_hyperref_clist {#1} }
\cs_new_protected:Npn \eb_define_link_color:nnn #1#2#3
  { \definecolorset{HTML}{ctex@}{}{link,#1;url,#2;cite,#3} }
\cs_new_protected:Npn \eb_define_theme_color:nnn #1#2#3
  { \definecolorset{HTML}{ctex@}{}{frame,#1;emph,#2;verb,#3} }
\cs_new_protected:Npn \eb_define_link_color:n #1
  { \definecolorset{HTML}{ctex@}{}{link,#1;url,#1;cite,#1} }
\cs_new_protected:Npn \eb_define_theme_color:n #1
  { \definecolorset{HTML}{ctex@}{}{frame,#1;emph,#1;verb,#1} }
\cs_new_protected:Npn \DeclareLinkColor #1#2
  { \ctex_define:nx { ref } { \eb_link_color_set:nn {#1} {#2} } }
\cs_new_protected:Npn \DeclareThemeColor #1#2
  { \ctex_define:nx { tools } { \eb_theme_color_set:nn {#1} {#2} } }
\cs_new_protected:Npn \eb_color_assign_cmd_set:nn #1#2
  {
    \cs_new:cpn { eb_#2_color_set:nn } ##1##2
      {
        #1/##1 .code:n =
          {
            \use:c { eb_define_#2_color:nnn }
              { \clist_item:nn {##2} { 1 } }
              { \clist_item:nn {##2} { 2 } }
              { \clist_item:nn {##2} { 3 } }
          }
      }
  }
\clist_map_inline:nn
  {
    { linkcolor } { link },
    { color } { theme }
  }
  { \eb_color_assign_cmd_set:nn #1 }
\clist_map_inline:nn
  {
    { fresh    } { 62d71f,0000b2,005752 },
    { cutepink } { ea4492,ad3ccc,57b5e5 },
    { navyblue } { 000080,4ec9ea,eb6877 },
    { crimson  } { dc143c,00c1c9,afcd20 }
  }
  { \DeclareLinkColor #1 }
\ctex_define:nn { ref }
  {
    linkcolor .choice:,
    linkcolor .value_required:n = true,
    linkcolor .initial:n        = navyblue,
    linkcolor-every .code:n     = \eb_define_link_color:n {#1}
  }
\clist_map_inline:nn
  {
    { none      } { 000000,000000,000000 },
    { seaside   } { 333fb2,9932cc,09cc00 },
    { energy    } { f39800,00a0e9,893895 },
    { cyberpunk } { 601986,eb6877,a4005b }
  }
  { \DeclareThemeColor #1 }
\ctex_define:nn { tools }
  {
    color .choice:,
    color .value_required:n = true,
    color .initial:n        = none,
    color-every .code:n     = \eb_define_theme_color:n {#1}
  }

\cs_new_protected:Npn \eb_link_border_set:n #1
  {
    \ctex_at_end_package:nn { hyperref }
      {
        \def\@pdfborder{#1}
        \def\Hy@colorlink ##1 {\begingroup}
        \def\Hy@endcolorlink{\endgroup}
      }
    \eb_set_hyperref:n { colorlinks = false }
  }
\cs_new_protected:Npn \eb_link_colors_set:
  { \eb_set_hyperref:n { colorlinks } }
\cs_new_protected:Npn \eb_link_toc_put:n #1
  { \eb_set_hyperref:n { linktoc = #1 } }
\ctex_define:nn { ref }
  {
    linktype .choice:,
    linktype .value_required:n  = true,
    linktype/edge .code:n       = \eb_link_border_set:n { 0~0~1 },
    linktype/none .code:n       = \eb_link_border_set:n { 0~0~0 },
    linktype/colors .code:n     = \eb_link_colors_set:,
    linktype/various .meta:n    = linktype/colors,
    linktype .initial:n         = edge,
    linktoc .choice:,
    linktoc .value_required:n   = true,
    linktoc/unknown .code:n     = \eb_link_toc_put:n {#1},
    linktoc .initial:n          = all,
    unknown .code:n = \eb_set_hyperref:x { \eb_unknown_kv_handle: },
    unknown .default:V          = \c_novalue_tl
  }

\cs_new_protected:Npn \eb_allow_url_break:
  {
    \eb_appto_cmd:nn { UrlBreaks }
      {
        \UrlOrds
        \tl_map_function:NN \c__eb_url_break_points_tl \do
      }
  }
\tl_const:Nn \c__eb_url_break_points_tl
  {
    ABCDEFGHIJKLMNOPQRSTUVWXYZ
    abcdefghijklmnopqrstuvwxyz
    0123456789
  }
\ctex_at_end_preamble:n
  {
    \RequirePackage{hyperref}
    \urlstyle{same}
    \eb_allow_url_break:
    \eb_put_hyperref:n
      {
        linkcolor = ctex@link,linkbordercolor = ctex@link,
        urlcolor  = ctex@url,urlbordercolor   = ctex@url,
        citecolor = ctex@cite,citebordercolor = ctex@cite
      }
    \hypersetup{bookmarksnumbered = true}
    \exp_args:NV \hypersetup \l__eb_hyperref_clist
  }

\cs_set_eq:NN \eb@labelformat@save \labelformat
\cs_set_protected:Npn \labelformat #1#2
  { \AfterPreamble{\eb@labelformat@save{#1}{#2}} }
\AtBeginDocument
  {
    \IfPackageLoadedTF{cleveref}{}
      {
        \labelformat{part}{\CTEXthepart}
        \labelformat{chapter}{\CTEXthechapter}
        \labelformat{figure}{\figurename~#1}
        \labelformat{table}{\tablename~#1}
        \labelformat{lstlisting}{\lstlistingname~#1}
        \tl_if_eq:NnTF \l__ctex_scheme_tl { chinese }
          {
            \labelformat{section}{节#1}
            \labelformat{subsection}{小节#1}
          }
          {
            \labelformat{section}{Section~#1}
            \labelformat{subsection}{Subsection~#1}
          }
      }
  }
\ctex_define:n
  {
    listlstlistingname .tl_set:N  = \listlstlistingname,
    lstlistingname .tl_set:N      = \lstlistingname,
    listtheoremname .tl_set:N     = \listtheoremname
  }
\tl_if_eq:NnTF \l__ctex_scheme_tl { chinese }
  {
    \keys_set_known:nn { ctex }
      {
        contentsname        = 目\hspace{1em}录,
        listfigurename      = 插图清单,
        listtablename       = 附表清单,
        listlstlistingname  = 代码清单,
        lstlistingname      = 代码,
        listtheoremname     = 定理清单
      }
    \ctex_at_end_package:nn { keytheorems }
      { \keytheoremlistset{title = 定理清单} }
  }
  {
    \keys_set_known:nn { ctex }
      {
        listlstlistingname  = List~of~Codes,
        lstlistingname      = Code
      }
  }

\cs_if_exist:NF \DeclareObjectType
  { \RequirePackage{xtemplate} }
\DeclareObjectType{easybook}{0}
\DeclareTemplateInterface{easybook}{cover}{0}
  {
    content : tokenlist       = \c_empty_tl,
    beforecode : tokenlist    = \c_empty_tl,
    aftercode : tokenlist     = \c_empty_tl,
    align : choice {l,r,c,n}  = c
  }
\DeclareTemplateCode{easybook}{cover}{0}
  {
    content     = \l__eb_cover_content_tl,
    beforecode  = \l__eb_cover_before_code_tl,
    aftercode   = \l__eb_cover_after_code_tl,
    align       =
      {
        l = \cs_set_eq:NN \eb_cover_align: \raggedright,
        r = \cs_set_eq:NN \eb_cover_align: \raggedleft,
        c = \cs_set_eq:NN \eb_cover_align: \centering,
        n = \cs_set:Npn \eb_cover_align: { }
      }
  }
  {
    \AssignTemplateKeys
    \tl_use:N \l__eb_cover_before_code_tl
    \group_begin:
    \eb_cover_align:
    \tl_use:N \l__eb_cover_content_tl
    \tex_par:D
    \group_end:
    \tl_use:N \l__eb_cover_after_code_tl
  }
\DeclareInstance{easybook}{top}{cover}{}
\DeclareInstance{easybook}{bottom}{cover}{}
\DeclareInstance{easybook}{middle}{cover}
  {
    content     =
      {
        \notbool{@titlepage}
          {
            \renewcommand{\theupfootnote}{\@fnsymbol\c@footnote}
            \renewcommand{\thefootnote}{\@fnsymbol\c@footnote}
            \let\footnote\thanks
          }
          {}
        \bgroup\LARGE\@title\par\egroup
        \notbool{@titlepage}{\vskip 1.5em}{\vskip 3em}
        \bgroup\large
        \begin{tabular}[t]{c}
          \@author
        \end{tabular}\par\egroup
        \notbool{@titlepage}{\vskip 0.75em}{\vskip 1.5em}
        \bgroup\large\@date\par\egroup
        \notbool{@titlepage}{\vskip 1.5em}{}
        \@thanks
      },
    beforecode  =
      {
        \ifbool{@titlepage}
          {
            \begin{titlepage}
            \let\footnotesize\small
            \let\footnoterule\relax
            \let\footnote\thanks
            \null\vfil\vskip 60\p@
          }
          {\null\vskip 20\p@}
      },
    aftercode   =
      {
        \ifbool{@titlepage}
          {
            \vfil\null
            \end{titlepage}
          }
          {\thispagestyle{plain}}
        \setcounter{footnote}{0}
      }
  }
\keys_define:nn { eb/cover }
  {
    title .tl_set:N   = \@title,
    author .tl_set:N  = \@author,
    date .tl_set:N    = \@date
  }
\RenewDocumentCommand{\maketitle}{+O{}}
  {
    \keys_set:nn { eb/cover } {#1}
    \UseInstance{easybook}{top}
    \UseInstance{easybook}{middle}
    \UseInstance{easybook}{bottom}
  }
%</package>
%<*tcolorbox>
\ProvidesExplFile{eb-tcolorbox.cfg}{2024/12/12}{2024ht}
  {Customization of tcolorbox for easybook}

\cs_set_protected:Npn \addtotcbstyle #1#2
  { \tcbset{#1/.append~style = {#2}} }
\cs_set_protected:Npn \deftcbstyle #1#2
  { \tcbset{#1/.style = {#2}} }

\deftcbstyle{tc-easyboxi}
  {
    enhanced~jigsaw,
    center~title,
    left = 8pt,right = 8pt,
    coltitle = black,colframe = black,
    top = 0.5\baselineskip,bottom = 0.5\baselineskip,
    middle = 0.5\baselineskip,
    toptitle = 0.5\baselineskip,
    titlerule = 0pt,
    beforeafter~skip = 0.5\baselineskip
  }
\deftcbstyle{tc-easyboxii}
  {
    enhanced~jigsaw,
    frame~hidden,boxrule = 0pt,
    left = 10pt,
    middle = 0.5\baselineskip,bottomtitle = 0.5\baselineskip,
    beforeafter~skip = 0.5\baselineskip
  }
\deftcbstyle{tc-eboxi}{on~line,blank}
\deftcbstyle{tc-eboxii}
  {
    standard~jigsaw,on~line,
    top = 3pt,bottom = 3pt,left = 3pt,right = 3pt,
    boxrule = 0.4pt,opacityback = 0.2
  }
\tcbset
  {
    breakable,
    pad~at~break* = 0.5\baselineskip,
    sharpish~corners,
    fonttitle     = \sffamily,
    colframe      = black,
    boxsep        = 0pt,
    boxrule       = 0.5pt
  }

\DeclareTColorBox{easyboxi}{sO{LemonChiffon}d()O{}}
  {
    IfBooleanF = {#1}{frame~hidden,boxrule = 0pt},
    IfValueT = {#3}{title = #3},
    colback = #2,colbacktitle = #2,
    tc-easyboxi,#4
  }
\DeclareTColorBox{easyboxii}{sO{RoyalBlue}D(){}O{}}
  {
    borderline~west = {3pt}{0pt}{#2},
    IfBooleanTF = {#1}
      {
        colback = white,
        top = 0pt,bottom = 0pt,right = 0pt,
        pad~at~break* = 0pt
      }{
        colback = #2,colbacktitle = #2,
        opacityback = 0.2,opacitybacktitle = 0.2,
        top = \tl_if_blank:nTF {#3} { 0.5\baselineskip } { 0pt },
        bottom = 0.5\baselineskip,
        toptitle = 0.5\baselineskip,
        right = 8pt
      },
    title = #3,coltitle = #2,
    tc-easyboxii,#4
  }
\DeclareTotalTCBox{\eboxi}{O{Yellow}mO{}}
  {
    fuzzy~halo = 2pt~with~#1,
    tc-eboxi,#3
  }{#2}
\DeclareTotalTCBox{\eboxii}{O{Green}mO{}}
  {
    colback = #1,colframe = black,
    tc-eboxii,#3
  }{#2}
%</tcolorbox>