✏ EDIT: ps2epsi

#!/bin/sh

# This definition is changed on install to match the
# executable name set in the makefile
GS_EXECUTABLE=gs
gs="`dirname \"$0\"`/$GS_EXECUTABLE"
if test ! -x "$gs"; then
	gs="$GS_EXECUTABLE"
fi
GS_EXECUTABLE="$gs"

# try to create a temporary file securely
if test -z "$TMPDIR"; then
	TMPDIR=/tmp
fi
if which mktemp >/dev/null 2>/dev/null; then
	tmpfile="`mktemp $TMPDIR/ps2epsi.XXXXXX`"
else
	tmpdir=$TMPDIR/ps2epsi.$$
	(umask 077 && mkdir "$tmpdir")
	if test ! -d "$tmpdir"; then
		echo "failed: could not create temporary file"
		exit 1
	fi
	tmpfile="$tmpdir"/ps2epsi$$
fi
trap "rm -rf \"$tmpfile\"" 0 1 2 3 7 13 15

export outfile

if [ $# -lt 1 -o $# -gt 2 ]; then
	echo "Usage: `basename \"$0\"` file.ps [file.epsi]" 1>&2
	exit 1
fi

infile=$1;

if [ $# -eq 1 ]
then
	case "${infile}" in
	  *.ps)		base=`basename "${infile}" .ps` ;;
	  *.cps)	base=`basename "${infile}" .cps` ;;
	  *.eps)	base=`basename "${infile}" .eps` ;;
	  *.epsf)	base=`basename "${infile}" .epsf` ;;
	  *)		base=`basename "${infile}"` ;;
	esac
	outfile=${base}.epsi
else
	outfile=$2
fi

"$GS_EXECUTABLE" -q -dBATCH -dNOPAUSE -P- -sDEVICE=bbox -sOutputFile=/dev/null "${infile}" 2>${outfile}

ls -l "${infile}" |
awk 'F==1	{
		cd="%%CreationDate: " $6 " " $7 " " $8;
		t="%%Title: " $9;
		f="%%For:" U " " $3;
		c="%%Creator: Ghostscript ps2epsi from " $9;
		next;
		}
	/^%!/	{next;}
	/^%%Title:/	{t=$0; next;}
	/^%%Creator:/	{c=$0; next;}
	/^%%CreationDate:/	{cd=$0; next;}
	/^%%For:/	{f=$0; next;}
	!/^%/	{
		print "/ps2edict 30 dict def";
		print "ps2edict begin";
		print "/epsititle (" t "\\n) def";
		print "/epsicreator (" c "\\n) def";
		print "/epsicrdt (" cd "\\n) def";
		print "/epsifor (" f "\\n) def";
		exit(0);
		}
	' U="$USERNAME$LOGNAME"  F=1 - F=2 "${infile}" >"$tmpfile"

ls -l "${outfile}" |
awk 'F==1	{
		b="%%BoundingBox: 0 0 0 0\\n";
		}
		/^%%BoundingBox:/	{b=$0; next;}
		/^%%HiResBoundingBox:/	{ 
		hb=$0;
		print "ps2edict where {pop} {/ps2edict 30 dict def} ifelse";
		print "ps2edict begin";
		print "/BBoxString (" b "\\n) def";
		print "/HiresBBoxString (" hb "\\n) def";
		print "end";
		exit(0);
		}
	' F=1 - F=2 "${outfile}" >>"$tmpfile"

"$GS_EXECUTABLE" -q -dNOPAUSE -P- -r72 -sDEVICE=bit -sOutputFile=/dev/null "$tmpfile" ps2epsi.ps "$tmpfile" <"${infile}" 1>&2
rm -f "$tmpfile"
rm -rf "$tmpdir"

(
cat << BEGINEPS
save countdictstack mark newpath /showpage {} def /setpagedevice /pop load def
%%EndProlog
%%Page 1 1
BEGINEPS

cat "${infile}" |
LC_ALL=C \
sed -e '/^%%BeginPreview:/,/^%%EndPreview[^!-\~]*$/d' -e '/^%!PS-Adobe/d'\
	-e '/^%%[A-Za-z][A-Za-z]*[^!-\~]*$/d' -e '/^%%[A-Za-z][A-Za-z]*: /d'

cat << ENDEPS
%%Trailer
cleartomark countdictstack exch sub { end } repeat restore
%%EOF
ENDEPS

) >> "${outfile}"

exit 0

[✗] CANCEL