Created
October 27, 2022 07:31
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generates raster pdf script
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#/bin/sh | |
set -eu | |
for exe in "gs" "gm" "pdftoppm" "mktemp" ; do | |
which "$exe" >/dev/null | |
if [ $? -ne 0 ]; then | |
exit 1 | |
fi | |
done | |
help() { | |
echo " | |
pdf2imgpdf: generates raster pdf | |
usage: pdf2imgpdf [input file] [output file's prefix] | |
option: | |
-h show this message | |
-o specifies output file's name | |
" 1>&2 | |
exit 0 | |
} | |
DIR=$(mktemp -d) | |
current=$(pwd) | |
SANITIZED_DIR=$(echo $DIR | sed 's/\//\\&/g' | sed 's/\./\\./g') | |
while getopts ho: OPTION; do | |
case $OPTION in | |
h) help ;; | |
o) OUTPUTFILE=$OPTARG;; | |
esac | |
done | |
if [ $OUTPUTFILE ] ; then | |
$OUTPUTFILE="$2-img-optimized.pdf" | |
fi | |
pdftoppm -png "$1" "$DIR/$2" | |
gm convert -page A4+0+0 $(ls "$DIR" | grep -E "$2-[0-9]+.png" | sed "s/^/$SANITIZED_DIR\//") "$DIR/$2-img.pdf" | |
gs -dNOPAUSE -dBATCH -sDEVICE=pdfwrite -dCompatibilityLevel=1.4 \ | |
-dPDFSETTINGS=/printer \ | |
-sOutputFile="$DIR/$OUTPUTFILE" \ | |
"$DIR/$2-img.pdf" | |
cp "$DIR/$OUTPUTFILE" "$current/" |
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