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97 lines
1.7 KiB
Bash
Executable file
97 lines
1.7 KiB
Bash
Executable file
#!/usr/bin/env bash
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# This is here because scanimage's batch mode is broken for my scanner
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function help() {
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cat <<EOF
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easyscan
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easyscan wraps scanimage and joins the resulting pdf.
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Usage:
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easyscan <target_file> [ -- args ]:
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Scan a (multi-page) document to <target_file>, passing args to scanimage
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EOF
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}
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if [ $# -lt 1 ]; then
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help
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exit 1
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fi
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OUTPUT_FILE="$1.pdf"
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if [ -e "$OUTPUT_FILE" ]; then
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echo "$OUTPUT_FILE" already exists, you are probably making a mistake!
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exit 1
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fi
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shift
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scanimage_args=(
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"-x" "210"
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"-y" "297"
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"--resolution" "300"
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)
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while [ $# -gt 0 ]; do
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case $1 in
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--help)
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help
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exit
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;;
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--)
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shift
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scanimage_args+=("$@")
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break
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;;
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*)
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shift
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;;
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esac
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done
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tempdir="$(mktemp -d)"
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filenames=()
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counter=1
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function clean() {
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# Make sure I don't remove things other than pdf
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rm "$tempdir/"*.pdf
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rm -d "$tempdir"
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}
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trap clean EXIT
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while :; do
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ok="true"
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echo "Scanning page $counter"
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CUR_FNAME="$tempdir/easyscan_$counter.pdf"
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# If no size is set, the output will be wonky-sized
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# 210,297 is the size of A4
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scanimage "${scanimage_args[@]}" -o "$CUR_FNAME" || ok="false"
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if $ok; then
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counter=$((counter += 1))
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filenames+=("$CUR_FNAME")
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fi
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IFS= read -r -p "Continue scanning? [Y/n] " cont
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case "$cont" in
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[nN])
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echo "Exiting..."
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break
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;;
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[yY] | *) ;;
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esac
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done
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# Multiple files are scanned, join them
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#
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# Note: do NOT use the * glob, because bash orders lexicographically and not
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# numerically, the merged ordering will be wrong.
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merged_filename="$tempdir/easyscan_final.pdf"
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pdfunite "${filenames[@]}" "$merged_filename"
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# Copy scan to current directory
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mkdir -p "$(dirname "$OUTPUT_FILE")"
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cp "$merged_filename" "$OUTPUT_FILE"
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clean
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