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#!/bin/sh
if test $# -ne 4 ; then
echo "Usage: $0 <pdf-file> <pdfinfo-output> <pdfinfo-ref> <diff-output>"
exit 3
fi
# Check for pdfinfo version >= 21.10.00
if pdfinfo -v 2>& 1 | awk '/pdfinfo version/ { split($3,v,/[.]/); if (v[1] > 21 || (v[1] == 21 && v[2] >= 10) ) { print "yes" } } ' | grep -q 'yes'; then
pdfinfo -struct-text "$1" > "$2"
if test -f "$3" ; then
diff -u "$3" "$2" > "$4"
# diff exit codes: 0 = match, 1 = different, 2 = error
exit $?
else
exit 3 # missing ref file
fi
fi
# pdfinfo missing or wrong version
exit 4
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