50 lines
1.8 KiB
Bash
Executable File
50 lines
1.8 KiB
Bash
Executable File
#!/bin/sh -e
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# Overlay a PDF with another or a text
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# Trims everything beyond the given page number
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test "$1" = "-q" && quiet=$1 && shift
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case "$1" in ([0-9]) page=$1; shift;; esac
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test ! -r "$1" && echo "Usage: sign [page] <document.pdf> [hoffset (-160) [voffset (-310) [scale [signature-image]]]]" && exit 1
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tmp_base=/tmp/sign
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mkdir -p $tmp_base
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texttopdf() {
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out="$tmp_base/stamp.pdf"
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echo "$1" | enscript -B -f Arial12 -o- | ps2pdf - >"$out"
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echo "$out"
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}
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signature=$(test -f "$5" && echo "$5" || pass info/signature$(test -n "$5" && echo "-$5") || texttopdf "$5")
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# TODO make filenames unique and don't rerun unneccessarily
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tmp_signed=$tmp_base/$1_${page:-last}-signature.pdf
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tmp_reversed=$tmp_base/$1_reverse.pdf
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sig=$tmp_base/signature_offset.pdf
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result="${1%.pdf}_$(basename "${5:-signed}").pdf"
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h=${2:--160}
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v=${3:--310}
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if test $# -lt 2; then
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case "$1" in
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(*\ TU.pdf) v=-260;;
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esac
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fi
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echo "Using offset ${h}x and ${v}y"
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export TEXMF=""
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pdfjam $quiet "$signature" --outfile "$sig" --papersize "{595pt, 842pt}" --noautoscale true \
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--offset "${h}pt ${v}pt" --scale "${4:-1}"
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rm -f "$result"
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pdfjam $quiet "$1" ${page:-last} "$sig" --outfile "$tmp_signed" --delta "0 -842pt" --nup "1x2" --fitpaper true
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# TODO consider pdftk stamp
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timg "$tmp_signed"
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# https://apple.stackexchange.com/questions/198854/shell-command-to-count-pages-in-a-pdf-other-than-pdftk
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if test "$page"
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then test "$page" -gt 1 && pdfjam $quiet "$1" 1-$(expr $page - 1) "$tmp_signed" 1 "$1" $(expr $page + 1)-last --outfile "$result"
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elif test "$(pdftk "$1" dump_data | grep Pages | cut -d' ' -f2)" -gt 1
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then
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pdfjam $quiet "$1" last-1 --outfile "$tmp_reversed"
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pdfjam $quiet "$tmp_reversed" last-2 "$tmp_signed" --outfile "$result"
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fi
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test -f "$result" || cp -v "$tmp_signed" "$result"
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