rustgc_paper/pgfcache.sty at master · softdevteam/rustgc_paper · GitHub

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\NeedsTeXFormat{LaTeX2e}
\ProvidesPackage{pgfcache}

\RequirePackage{graphicx}
\RequirePackage{pgf}
\RequirePackage{standalone}
\RequirePackage{xkeyval}

\edef\@figdir{_pgfcache}
\edef\@outdir{}

\DeclareOptionX{outdir}{\edef\@outdir{#1/}}
\DeclareOptionX*{\PackageWarning{pgfcache}{`\CurrentOption' ignored}}
\ProcessOptionsX\relax

\catcode`\#=11
\catcode`\|=6
\newcommand{\@basicpgfpreamble}[1]{%
	\unexpanded{%
		\documentclass{standalone}^^J
		\usepackage{pgf}^^J
		\let\oldpgfimage\pgfimage^^J
		\renewcommand{\pgfimage}[2][]{\oldpgfimage[#1]{|1/#2}}^^J
	}%
}
\catcode`\#=6
\catcode`\|=12

\let\@pgfpreamble\@basicpgfpreamble

\newcommand{\setpgfpreamble}[1]{%
	\renewcommand{\@pgfpreamble}[1]{\@basicpgfpreamble{##1}\unexpanded{#1}}
}

\newcounter{@pgfcounter}
\newwrite\@pgfout
\newread\@pgfin

\newcommand{\importpgf}[3][]{%
	\IfFileExists{#2/#3}{}{\errmessage{importpgf: File #2/#3 not found}}%
	\edef\@figfile{\jobname-\the@pgfcounter}%
	\providecommand{\@writetempfile}{}%
	\renewcommand{\@writetempfile}[1]%
	{%
		\immediate\openout\@pgfout=##1%
		\immediate\write\@pgfout{\@pgfpreamble{#2}}%
		\immediate\write\@pgfout{\string\begin{document}}%
		\immediate\openin\@pgfin=#2/#3%
		\begingroup\endlinechar=-1%
			\loop\unless\ifeof\@pgfin%
				\readline\@pgfin to \@fileline%
				\ifx\@fileline\@empty\else%
					\immediate\write\@pgfout{\@fileline}%
				\fi%
			\repeat%
		\endgroup%
		\immediate\closein\@pgfin%
		\immediate\write\@pgfout{\string\end{document}}%
		\immediate\closeout\@pgfout%
	}%
	\def\@compile%
	{%
		\immediate\write18{pdflatex -interaction=batchmode -output-directory="\@outdir\@figdir" \@outdir\@figdir/\@figfile.tex}%
	}%
	\IfFileExists{\@figdir/\@figfile.pdf}%
	{%
		\@writetempfile{\@figdir/tmp.tex}%
		\edef\@hashold{\pdfmdfivesum file {\@figdir/\@figfile.tex}}%
		\edef\@hashnew{\pdfmdfivesum file {\@figdir/tmp.tex}}%
		\ifnum\pdfstrcmp{\@hashold}{\@hashnew}=0%
			\relax%
		\else%
			\@writetempfile{\@figdir/\@figfile.tex}%
			\@compile%
		\fi%
	}%
	{%
		\@writetempfile{\@figdir/\@figfile.tex}%
		\@compile%
	}%
	\IfFileExists{\@figdir/\@figfile.pdf}%
	{\includegraphics[#1]{\@figdir/\@figfile.pdf}}%
	{\errmessage{Error during compilation of figure #2/#3}}%
	\stepcounter{@pgfcounter}%
}

\endinput