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+%%
+%% This is file `sudoku.sty',
+%% generated with the docstrip utility.
+%%
+%% The original source files were:
+%%
+%% sudoku.dtx (with options: `package')
+%%
+%% This is a generated file.
+%%
+%% Copyright 2005 Paul Abraham <paul.abraham@hotpop.com>
+%%
+%% This work may be distributed and/or modified under the
+%% conditions of the LaTeX Project Public License, either
+%% version 1.3 of this license or (at your option) any
+%% later version.
+%% The latest version of this license is in
+%% http://www.latex-project.org/lppl.txt
+%% and version 1.3 or later is part of all distributions of
+%% LaTeX version 2003/12/01 or later.
+%%
+%% This work has the LPPL maintenance status "maintained".
+%%
+%% This Current Maintainer of this work is Paul Abraham.
+%%
+%% This work consists of the files sudoku.dtx, sudoku.ins
+%% README, CHANGES and the derived file sudoku.sty.
+%%
+\NeedsTeXFormat{LaTeX2e}[1999/12/01]
+\ProvidesPackage{sudoku}
+ [2005/06/29 v1.0 Sudoku grid]
+\newcounter{@sudoku@row}
+\newcounter{@sudoku@col}
+\newcommand*\@sudoku@separator[1]{%
+ \stepcounter{@sudoku@col}%
+ \ifx#1\@sudoku@separator
+ \expandafter#1%
+ \else
+ \ifx.#1%
+ \setcounter{@sudoku@col}{-1}%
+ \addtocounter{@sudoku@row}{-1}%
+ \else
+ \put(\value{@sudoku@col},\value{@sudoku@row})%
+ {\makebox(1,1){\sudokuformat{#1}}}%
+ \fi
+ \fi
+}
+\begingroup
+ \catcode`\|=\active
+ \gdef\@sudoku@activate{\let|=\@sudoku@separator}
+\endgroup
+\newcommand*\@sudoku@grid{%
+ \thinlines
+ \multiput(0,0)(1,0){10}{\line(0,1){9}}%
+ \multiput(0,0)(0,1){10}{\line(1,0){9}}
+ \thicklines
+ \multiput(0,0)(3,0){4}{\line(0,1){9}}%
+ \multiput(0,0)(0,3){4}{\line(1,0){9}}
+}
+\newcommand*\sudokuformat[1]{\Huge\sffamily#1}
+\newdimen\sudokusize
+\setlength\sudokusize{10cm}
+\newenvironment{sudoku-block}{%
+ \catcode`\|=\active
+ \@sudoku@activate
+ \setcounter{@sudoku@col}{-1}%
+ \setcounter{@sudoku@row}{8}%
+ \setlength\unitlength{.111111\sudokusize}%
+ \begin{picture}(9,9)%
+ \@sudoku@grid\@sudoku@grab@arguments
+ }{\end{picture}}
+ \begingroup
+ \@ifundefined{eTeXversion}{\endgroup
+ \def\@sudoku@grab@arguments#1{%
+ \ifx#1\@sudoku@separator
+ \expandafter#1%
+ \else
+ \PackageError{sudoku}{%
+ Sudoku puzzles are not allowed in the arguments\MessageBreak
+ of other commands}{%
+ Either fix this in your source (possibly using the `lrbox'
+ environment) or use an eTeX based LaTeX format}
+ \fi
+ }%
+ }{\endgroup
+ \def\@sudoku@grab@arguments#1.#2.#3.#4.#5.#6.#7.#8.#9.{%
+ \scantokens{#1.#2.#3.#4.#5.#6.#7.#8.#9.}}%
+ }
+\newenvironment{sudoku}{%
+ \begin{center}%
+ \begin{sudoku-block}}{\end{sudoku-block}\end{center}}
+\endinput
+%%
+%% End of file `sudoku.sty'.