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https://git.lyx.org/repos/lyx.git
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4da67cb792
git-svn-id: svn://svn.lyx.org/lyx/lyx-devel/trunk@7658 a592a061-630c-0410-9148-cb99ea01b6c8
135 lines
3.3 KiB
Bash
135 lines
3.3 KiB
Bash
#! /bin/sh
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# file fig2pdf.sh
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# This file is part of LyX, the document processor.
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# Licence details can be found in the file COPYING.
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#
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# author Angus Leeming
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#
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# Full author contact details are available in file CREDITS
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# This script converts an XFIG image to something that pdflatex can process
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# into high quality PDF.
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# Usage: sh fig2pdf.sh ${base}.xfig
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# to generate ${base}.pdftex_t
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# Thereafter, you need only '\input{${base}.pdftex_t}' in your latex document.
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# The external programs
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FIG2DEV=fig2dev
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# Used only by legacy_xfig
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GS=gs
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find_exe() {
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test $# -eq 1 || exit 1
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type $1 > /dev/null || {
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echo "Unable to find \"$1\". Please install."
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exit 1
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}
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}
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# modern_xfig() and legacy_xfig() are the functions that do all the work.
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# Modern versions of xfig can output the image without "special" text as
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# a PDF file ${base}.pdf and place the text in a LaTeX file
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# ${base}.pdftex_t for typesetting by pdflatex itself.
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modern_xfig() {
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# Can we find fig2dev?
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find_exe ${FIG2DEV}
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input=$1
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pdftex_t=$2
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pdftex=$3.pdf
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${FIG2DEV} -Lpdftex -p1 ${input} ${pdftex}
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${FIG2DEV} -Lpdftex_t -p${outbase} ${input} ${pdftex_t}
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exit 0;
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}
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# This function is used only by legacy_xfig.
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# It manipulates the Bounding Box info to enable gs to produce
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# the appropriate PDF file from an EPS one.
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# The generated PostScript commands are extracted from epstopdf, distributed
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# with tetex.
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clean_epsfile() {
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test $# -eq 1 || exit 1
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# No bounding box info
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grep '%%BoundingBox' $1 > /dev/null || return 1;
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bbox=`sed -n '/^%%BoundingBox/p' $1`
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llx=`echo ${bbox} | cut -d' ' -f2`
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lly=`echo ${bbox} | cut -d' ' -f3`
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urx=`echo ${bbox} | cut -d' ' -f4`
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ury=`echo ${bbox} | cut -d' ' -f5`
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width=`expr $urx - $llx`
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height=`expr $ury - $lly`
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xoffset=`expr 0 - $llx`
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yoffset=`expr 0 - $lly`
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temp=$1.??
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sed "/^%%BoundingBox/{
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s/^\(%%BoundingBox:\).*/\1 0 0 ${width} ${height}\\
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<< \/PageSize [${width} ${height}] >> setpagedevice\\
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gsave ${xoffset} ${yoffset} translate/
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}" $1 > $temp
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mv -f $temp $1
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}
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# Older versions of xfig cannot do this, so we emulate the behaviour using
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# pstex and pstex_t output.
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legacy_xfig() {
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# Can we find fig2dev and epstopdf?
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find_exe ${FIG2DEV}
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find_exe ${GS}
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input=$1
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pdftex_t=$2
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pdf=$3.pdf
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pstex=$3.pstex
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${FIG2DEV} -Lpstex ${input} ${pstex}
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${FIG2DEV} -Lpstex_t -p${outbase} ${input} ${pdftex_t}
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# Convert the ${pstex} EPS file (free of "special" text) to PDF format
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# using gs
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clean_epsfile ${pstex}
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${GS} -q -dNOPAUSE -dBATCH -dSAFER \
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-sDEVICE=pdfwrite -sOutputFile=${pdf} ${pstex}
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rm -f ${pstex}
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exit 0;
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}
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# The main logic of the script is below.
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# All it does is ascertain which of the two functions above to call.
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# We expect two args, the names of the input and output files.
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test $# -eq 2 || exit 1
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input=$1
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output=$2
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# Fail silently if the file doesn't exist
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test -r $input || exit 0
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# Strip the extension from ${output}
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outbase=`echo ${output} | sed 's/[.][^.]*$//'`
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# Ascertain whether fig2dev is "modern enough".
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# If it is, then the help info will mention "pdftex_t" as one of the
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# available outputs.
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CONVERT_IT=modern_xfig
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${FIG2DEV} -h | grep 'pdftex_t' > /dev/null || CONVERT_IT=legacy_xfig
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${CONVERT_IT} ${input} ${output} ${outbase}
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# The end
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