Alexander Kobjolke
0447507607
Some PDF files may contain empty BBox elements which confuses the pdf parser so that those files get ignored. This commit circumvents this problem by first converting all files to PostScript.
74 lines
1.2 KiB
Text
Executable file
74 lines
1.2 KiB
Text
Executable file
#! /usr/bin/env nix-shell
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#! nix-shell -i bash -p ghostscript -p coreutils
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#
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# Local Variables:
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# mode: sh
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# End:
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#
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workdir=
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keep_workdir=false
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output=-
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function usage {
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cat <<EOF
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usage: merge-pdf [options] files...
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options:
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-o FILE write result to FILE (default: -)
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EOF
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}
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function cleanup {
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if [ x"${keep_workdir}" != x"true" ]; then
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if [ -d "${workdir}" ]; then
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rm -rf "${workdir}"
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fi
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fi
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}
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trap "cleanup" EXIT
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while getopts ":ho:k" o; do
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case "$o" in
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h)
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usage
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exit 0
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;;
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o)
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output="$OPTARG"
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;;
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k)
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keep_workdir=true
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;;
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*)
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usage
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exit 1
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;;
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esac
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done
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shift $((OPTIND - 1))
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workdir=$(mktemp -d)
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echo >&2 "[INFO] Putting temporary files into ${workdir}"
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files=()
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for f; do
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fname=$(basename "$f" .pdf)
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of="${workdir}/${fname}.ps"
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echo >&2 "[PS ] \"${f}\" -> \"${of}\""
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pdf2ps "$f" "${of}" >&/dev/null
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files+=("$of")
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done
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echo >&2 "[PDF ] combining ${#files[@]} file(s) into ${output}"
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gs -dNOPAUSE -sDEVICE=pdfwrite \
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-dPDFSETTINGS=/prepress \
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-sPAPERSIZE=a4 \
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-sFIXEDMEDIA \
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-sOUTPUTFILE="${output}" \
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-dBATCH \
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"${files[@]}" >&/dev/null
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