.files/nix/packages/by-name/easyscan/easyscan.sh

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#
# Declare variables
#
DEVICE="${SANE_DEFAULT_DEVICE:-}"
OUTPUT_FILE=
while [[ $# -gt 0 ]]; do
case $1 in
-d | --device)
# Allows user to override the device used, since scanimage is
# slow and the printer might not even change between runs
DEVICE="$2"
shift
shift
;;
-*)
echo "Unknown option $1"
exit 1
;;
*)
OUTPUT_FILE="$1"
shift
;;
esac
done
#
# Handle defaults
#
if [ -z "$OUTPUT_FILE" ]; then
OUTPUT_FILE=./scan_"$(date)".pdf
fi
if [ -z "$DEVICE" ]; then
DEVICE=$(scanimage --formatted-device-list="%d (%v %m)" --list-devices |
fzf --header "Pick a device:" |
cut -d ' ' -f 1)
fi
tempdir="$(mktemp -d)"
do_scan() {
filename="$tempdir/$(date).pdf"
while ! scanimage --format=pdf --device="$DEVICE" --resolution 300 >"$filename"; do
:
done
echo "$filename"
}
do_fix() {
read -r filename
fixed_name="${filename%.pdf}_fixed.pdf"
gs -o "$fixed_name" -sDEVICE=pdfwrite -dPDFSETTINGS=/prepress "$filename"
rm "$filename"
mv "$fixed_name" "$filename"
echo "$filename"
}
while :; do
do_scan | do_fix
IFS= read -r -p "Continue scanning ? [Y/n] " cont
case "$cont" in
[nN])
echo "Exiting..."
break
;;
[yY] | *) ;;
esac
done
# Multiple files are scanned, join them
merged_filename="$tempdir/$(date)_final.pdf"
pdfunite "$tempdir"/*.pdf "$merged_filename"
echo "$merged_filename" | do_fix
# Copy scan to current directory
cp "$merged_filename" "$OUTPUT_FILE"
# Make sure I don't remove things other than pdf
rm "$tempdir/"*.pdf
rm -d "$tempdir"