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%%
%% This is file `bidipoem.sty',
%%
%% __________________________________
%% Copyright © 2009-2010 Vafa Khalighi
%%
%% License information appended.
%%
%%
\NeedsTeXFormat{LaTeX2e}
\ProvidesPackage{bidipoem}%
[2010/07/25 Environments for typesetting Persian traditional and modern poems]
\def\poemcolsepskip{.1\versewidth plus .1\versewidth minus .05\versewidth}
\def\poemmarginskip{1em plus 1fil minus 1em}
\def\poemextrabaselineskip{0\baselineskip}
\def\poemskip{\medskip}
\def\poemblocksep{\quad$\Box$}
\newdimen\versewidth
\newtoks\bidipoem@p@ftn
\def\poem@verse#1{%
\ifdim\wd#1>\new@poem@width
\xdef\new@poem@width{\the\wd#1}%
\ifdim\new@poem@width>\poem@width
\xdef\poem@width{\new@poem@width}%
\global\let\poem@needrun\relax
\fi
\fi
\hbox to\poem@width{\unhbox#1}%
}
\def\poem@linebegin{\vadjust{}\hskip\@flushglue\hskip\poemmarginskip\relax}
\def\poem@lineend{\nobreak\hskip\poemmarginskip\hskip\@flushglue\vadjust{}}
\def\poem@lineversesep{%
\nobreak
\hskip\z@ plus 1filll%
\penalty600%
\hskip\poemcolsepskip
\hskip\z@ plus -2filll%
\vadjust{}%
\nobreak
\hskip\z@ plus 1filll%
}
\def\poem@lineparsebegin{%
\halign\bgroup
\global\setbox\verse@i=\hbox{\ignorespaces##\unskip}&&
\global\setbox\verse@ii=\hbox{\ignorespaces##\unskip}
\cr
}
\def\poem@lineparseend{%
\crcr\egroup
\vskip-\baselineskip
}
\def\oldpoem@cr{%
\cr\poem@line
}
\newbox\verse@i
\newbox\verse@ii
\newif\ifpoem@started
\def\poem@line{%
\poem@lineparseend
\ifdim\wd\verse@i>\z@\global\poem@startedtrue\fi
\ifdim\wd\verse@ii>\z@\global\poem@startedtrue\fi
\ifpoem@started
\ifdim\wd\verse@ii>\z@\else
\nopagebreak[3]
\fi
\leavevmode
\poem@linebegin
\poem@verse\verse@i
\ifdim\wd\verse@ii>\z@
\poem@lineversesep
\poem@verse\verse@ii
\fi
\poem@lineend
\nopagebreak
\endgraf
\vskip\poemextrabaselineskip
\fi
\poem@lineparsebegin
}
\def\@traditionalpoem{%
\stepcounter{poem@no}
\ifnum\max@poem@no<\number\c@poem@no%
\xdef\poem@width{\z@}%
\else
\xdef\poem@width{\poem@prop{poem@width}}%
\fi
\xdef\new@poem@width{\z@}%
\global\versewidth=\poem@width
\poemskip\leavevmode\par
\begingroup
\let\@footnotetext\bidipoem@p@ftntext
\let\@LTRfootnotetext\bidipoem@p@LTRftntext
\let\@RTLfootnotetext\bidipoem@p@RTLftntext
\tabskip=\z@
\parskip=\z@
\parindent=\z@
\parfillskip=\z@
\rightskip=\z@
\leftskip=\z@
\widowpenalty=10000% No break between verses of the same line.
\clubpenalty=10000% Same as above. Not really needed.
\def\newblock{\hfil\poemblocksep\hfil\null}%
\def\par{\oldpoem@cr}% Redefine \par for possible \obeylines
\def\\{\global\poem@startedtrue\oldpoem@cr}%
\global\poem@startedfalse
\csname poem@obeylines\endcsname
\let\poem@obeylines\relax
\poem@lineparsebegin
}
\def\@endtraditionalpoem{%
\cr
\ifdim\wd\verse@i>\z@\poem@line\else\ifdim\wd\verse@ii>\z@\poem@line\else
\noalign{%
\skip0=\poemextrabaselineskip
\vskip-\skip0
\vskip-\baselineskip
}%
\fi\fi
\poem@lineparseend
\endgroup
\the\bidipoem@p@ftn
\global\bidipoem@p@ftn{}%
\par
\vskip\baselineskip
\poemskip
\ifdim\new@poem@width<\poem@width
\global\let\poem@needrun\relax
\fi
\poem@write@aux{poem@width@\romannumeral\c@poem@no}{\new@poem@width}%
\ifx\AtEndDocument\undefined\poem@finish\fi
}
\long\def\bidipoem@p@ftntext#1{%
\edef\@tempx{\the\bidipoem@p@ftn\noexpand\footnotetext[\the\c@footnote]}%
\global\bidipoem@p@ftn\expandafter{\@tempx{#1}}}%
\long\def\bidipoem@p@LTRftntext#1{%
\edef\@tempxi{\the\bidipoem@p@ftn\noexpand\LTRfootnotetext[\the\c@footnote]}%
\global\bidipoem@p@ftn\expandafter{\@tempxi{#1}}}%
\long\def\bidipoem@p@RTLftntext#1{%
\edef\@tempxii{\the\bidipoem@p@ftn\noexpand\RTLfootnotetext[\the\c@footnote]}%
\global\bidipoem@p@ftn\expandafter{\@tempxii{#1}}}%
\newenvironment{traditionalpoem}{\@traditionalpoem}{\@endtraditionalpoem}
\expandafter\def\csname traditionalpoem*\endcsname{\let\poem@obeylines=\obeylines\traditionalpoem}
\expandafter\def\csname endtraditionalpoem*\endcsname{\endtraditionalpoem}
\def\poem@finish{%
\poem@write@aux{max@poem@no}{\number\c@poem@no}%
\ifx\poem@needrun\relax
\PackageWarning{bidipoem}{Unjustified poem. Rerun XeLaTeX to get poem right}%
\global\let\poem@needrun\undefined
\fi
}
\ifx\AtEndDocument\undefined\else\AtEndDocument\poem@finish\fi
\newcounter{poem@no}\setcounter{poem@no}{\z@}
\ifx\max@poem@no\undefined
\def\max@poem@no{0}%
\fi
\newcommand{\poem@prop}[1]{\@nameuse{#1@\romannumeral\c@poem@no}}
\newcommand{\poem@write@aux}[2]{%
\def\@x{\immediate\write\@auxout{\global\noexpand\@namedef{#1}{#2}}}%
\@x
}
\def\@modernpoem{%
\par
\begingroup
\let\@footnotetext\bidipoem@p@ftntext
\let\@LTRfootnotetext\bidipoem@p@LTRftntext
\let\@RTLfootnotetext\bidipoem@p@RTLftntext
\parskip=\z@
\parindent=\z@
\def\[{\@settab\@tabplus\ignorespaces}%
\def\]{\@tabminus\ignorespaces}%
\def\newblock{\poemblocksep}%
\let\newpoem@tabcr\@tabcr
\def\par{% Redefine \par for possible \obeylines
\ifpoem@started\else
\ifdim\wd\@curline>\z@\global\poem@startedtrue\else
\@stopfield
\ifdim\wd\@curfield>\z@\global\poem@startedtrue\fi
\@contfield
\fi
\fi
\ifpoem@started\newpoem@tabcr\fi}%
\def\@tabcr{\global\poem@startedtrue\newpoem@tabcr}%
\global\poem@startedfalse
\csname poem@obeylines\endcsname
\let\poem@obeylines\relax
\begin{tabbing}%
}
\def\@endmodernpoem{%
\global\poem@startedfalse
\ifdim\wd\@curline>\z@\global\poem@startedtrue\else
\@stopfield
\ifdim\wd\@curfield>\z@\global\poem@startedtrue\fi
\@contfield
\fi
\ifpoem@started\else\let\@stopline\@stopfield\fi
\end{tabbing}%
\endgroup
\the\bidipoem@p@ftn
\global\bidipoem@p@ftn{}%
\par
}
\newenvironment{modernpoem}{\@modernpoem}{\@endmodernpoem}
\expandafter\def\csname modernpoem*\endcsname{\let\poem@obeylines=\obeylines\modernpoem}
\expandafter\def\csname endmodernpoem*\endcsname{\endmodernpoem}
%%
%% Copyright © 2009-2010 by Vafa Khalighi <vafa@users.berlios.de>
%%
%% Distributable under the LaTeX Project Public License,
%% version 1.3c or higher (your choice). The latest version of
%% this license is at: http://www.latex-project.org/lppl.txt
%%
%% This work is "maintained" (as per LPPL maintenance status)
%% by Vafa Khalighi.
%%
%%
%%
%%
%%
%% End of file `bidipoem.sty'.
|
