%
% Definitions for typesetting Chinese documents with LaTeX2e
%
% This package should work with 'book' and 'article' classes.
%

%
% This file contains Chinese characters and should be CCTed to generate
% a file with the extension .STY for use as a LaTeX2e package:
%
%	cct cctbase.ctx cctbase.sty
%
% Author:	张林波 (zlb@lsec.cc.ac.cn)
%		汪道柳 (wdl@lsec.cc.ac.cn}
%

\NeedsTeXFormat{LaTeX2e}[1994/12/01]
\ProvidesPackage{cctbase}[1997/12/10 Custom definitions for CCT]
\RequirePackage{cchead}

%
% Define \chntoday, and reset default \date
\newcommand\chntoday{\the\year\年\the\month\月\the\day\日}
\date{\chntoday}

% \CS is equal to a Chinese inter-word space
\def\CS{{\CC\ }}
% \ccnospace suppresses spaces before and after the argument
\def\ccnospace#1{\leavevmode\unskip #1\ignorespaces}

\newcommand\chnno@one[1]{%
  \ifcase#1 零\or 一\or 二\or 三\or 四\or 五\or 六\or 七\or 八\or 九\or 十%
  \else\@ctrerr\fi}

\def\chnno@two#1#2{%
  \ifnum #1=1\else\chnno@one{#1}\unskip\CS\fi 十\unskip
  \ifnum #2=0\else\CS\chnno@one{#2}\fi\unskip
}

\newcommand\chnno[1]{%
  \ifnum\arabic{#1}>99\@ctrerr\else
    \ifnum\arabic{#1}>10
      \expandafter\chnno@two\the\value{#1}\unskip
    \else
      \chnno@one{\arabic{#1}}\unskip
    \fi
  \fi}

%
% Change \@seccntformat to use \sectionname, \subsectionname, etc.
%org \def\@seccntformat#1{\csname the#1\endcsname\quad}
\def\@seccntformat#1{\csname #1name\endcsname\quad}%   !!!

%
% Change \@sect to use \sectionname, \subsectionname, etc., in the table of
% contents
\def\@sect#1#2#3#4#5#6[#7]#8{%
  \ifnum #2>\c@secnumdepth
    \let\@svsec\@empty
  \else
    \refstepcounter{#1}%
    \protected@edef\@svsec{\@seccntformat{#1}\relax}%
  \fi
  \@tempskipa #5\relax
  \ifdim \@tempskipa>\z@
    \begingroup
      #6{%
        \@hangfrom{\hskip #3\relax\@svsec}%
          \interlinepenalty \@M #8\@@par}%
    \endgroup
    \csname #1mark\endcsname{#7}%
    \addcontentsline{toc}{#1}{%
      \ifnum #2>\c@secnumdepth \else
%org    \protect\numberline{\csname the#1\endcsname}%
        \protect\numberline{\csname #1name\endcsname}%        !!!
      \fi
      #7}%
  \else
    \def\@svsechd{%
      #6{\hskip #3\relax
      \@svsec #8}%
      \csname #1mark\endcsname{#7}%
      \addcontentsline{toc}{#1}{%
        \ifnum #2>\c@secnumdepth \else
%org      \protect\numberline{\csname the#1\endcsname}%
          \protect\numberline{\csname #1name\endcsname}%      !!!
        \fi
        #7}}%
  \fi
  \@xsect{#5}}

%
% Change \afterheading to leave \parindent after heading
\def\@afterheading{%
  \@nobreaktrue
  \everypar{%
    \if@nobreak
      \@nobreakfalse
      \clubpenalty \@M
%org  \if@afterindent \else
%org    {\setbox\z@\lastbox}%
%org  \fi
    \else
      \clubpenalty \@clubpenalty
      \everypar{}%
    \fi}}

% Change default font size and style in \caption.
% Insert \pushziti and \popziti to avoid changing style of Chinese chars.
% (based on article/book classes).
\long\def\@makecaption#1#2{%
  \vskip\abovecaptionskip
%org \sbox\@tempboxa{#1: #2}%
  \sbox\@tempboxa{\pushziti\small #1: #2\popziti}%          !!!
  \ifdim \wd\@tempboxa >\hsize
%org   #1: #2\par
    {\pushziti\small #1: #2\popziti\par}%                   !!!
  \else
    \global \@minipagefalse
    \hbox to\hsize{\hfil\box\@tempboxa\hfil}%
  \fi
  \vskip\belowcaptionskip}

%
% Match Chinese typefaces to LaTeX typefaces
\newcommand\@matchccfont[3]{%
  \let#2#1\def#1{#2#3}
}

% Use \heiti for \bfseries
\@matchccfont{\bfseries}{\obfseries}{\heiti}

% Use \songti for \rmfamily, \mdseries, \upshape
\@matchccfont{\rmfamily}{\ormfamily}{\songti}
\@matchccfont{\mdseries}{\omdseries}{\songti}
\@matchccfont{\upshape}{\oupshape}{\songti}

% Use \kaishu for \itshape
\@matchccfont{\itshape}{\oitshape}{\kaishu}

% Use \fangsong for \slshape, \sffamily
\@matchccfont{\slshape}{\oslshape}{\fangsong}
\@matchccfont{\sffamily}{\osffamily}{\fangsong}

%
% Map Chinese and LaTeX2e font sizes by redefining
% \set@fontsize{baselinestretch}{point size}{baselineskip}
%
% We also set \parindent=2\ccwd if current parindent is not zero.
\let\oset@fontsize=\set@fontsize
\def\set@fontsize#1#2#3{%
  \oset@fontsize{#1}{#2}{#3}%
  \ifdim #2pt < 6.25pt \zihao{7}\else
     \ifdim #2pt < 8pt \zihao{6}\else
        \ifdim #2pt < 9.2pt \zihao{-5}\else
           \ifdim #2pt < 10.61pt \zihao{5}\else
              \ifdim #2pt < 12.16pt \zihao{-4}\else
                 \ifdim #2pt < 14pt \zihao{4}\else
                    \ifdim #2pt < 17.5pt \zihao{3}\else
                       \ifdim #2pt < 23pt \zihao{2}\else
                          \ifdim #2pt < 30pt \zihao{1}\else
                             \zihao{0}\relax
  \fi\fi\fi\fi\fi\fi\fi\fi\fi
  \ifdim\parindent=0pt\else\parindent 2\ccwd\fi
}

% Change definition of \numberline to allow wider section/chapter labels in
% \tableofcontents
%org \def\numberline#1{\hb@xt@\@tempdima{#1\hfil}}
\def\numberline#1{\ifx\relax#1\relax\else#1\quad\fi}% !!!

%=========== suppress extra inter-line spacing in \list environments
\setlength\partopsep{0pt}
\def\@listI{\leftmargin\leftmargini
            \parsep 0pt
            \topsep \parsep
            \itemsep \parsep}
\@listI
\def\@listii {\leftmargin\leftmarginii
              \labelwidth\leftmarginii
              \advance\labelwidth-\labelsep
              \parsep    \z@ \@plus\z@  \@minus\z@
              \topsep    \parsep
              \itemsep   \parsep}
\def\@listiii{\leftmargin\leftmarginiii
              \labelwidth\leftmarginiii
              \advance\labelwidth-\labelsep
              \parsep    \z@ \@plus\z@  \@minus\z@
              \topsep    \parsep
              \itemsep   \parsep}
\def\@listiv{\leftmargin\leftmarginiv
              \labelwidth\leftmarginiv
              \advance\labelwidth-\labelsep
              \parsep    \z@ \@plus\z@  \@minus\z@
              \topsep    \parsep
              \itemsep   \parsep}
\def\@listv{\leftmargin\leftmarginv
              \labelwidth\leftmarginv
              \advance\labelwidth-\labelsep
              \parsep    \z@ \@plus\z@  \@minus\z@
              \topsep    \parsep
              \itemsep   \parsep}
\def\@listvi{\leftmargin\leftmarginvi
              \labelwidth\leftmarginvi
              \advance\labelwidth-\labelsep
              \parsep    \z@ \@plus\z@  \@minus\z@
              \topsep    \parsep
              \itemsep   \parsep}
%
% Change default margins for \list environments
\setlength\leftmargini   {2\ccwd}
\setlength\leftmarginii  {\leftmargini}
\setlength\leftmarginiii {\leftmargini}
\setlength\leftmarginiv  {\leftmargini}
\setlength\leftmarginv   {\ccwd}
\setlength\leftmarginvi  {\ccwd}
\setlength\leftmargin    {\leftmargini}
\setlength\labelsep      {.5\ccwd}
\setlength\labelwidth    {\leftmargini}

%
\setlength\listparindent{2\ccwd}
% Change \listparindent to 2\ccwd in \list
\def\list#1#2{\ifnum \@listdepth >5\relax \@toodeep
     \else \global\advance\@listdepth\@ne \fi
  \rightmargin \z@ \listparindent2\ccwd \itemindent \z@
  \csname @list\romannumeral\the\@listdepth\endcsname
  \def\@itemlabel{#1}\let\makelabel\@mklab \@nmbrlistfalse #2\relax
  \@trivlist
  \parskip\parsep \parindent\listparindent
  \advance\linewidth -\rightmargin \advance\linewidth -\leftmargin
  \advance\@totalleftmargin \leftmargin
  \parshape \@ne \@totalleftmargin \linewidth
  \ignorespaces}

%
% Use \bfseries in the title
\let\oldtitle=\title
\def\title#1{\oldtitle{\bfseries\biaosong #1}}

\def\baselinestretch{1.3}\normalsize

\endinput