#!/bin/sh
#
# Merge font metrics and kerning information from separate files
#

CMD=mmrg

[ $# -eq 0 ] && { echo "usage: $CMD metric_afm [kern_afm]" >&2; exit 1; }
[ -f "$1" ] || { echo "$CMD: Missing file '$1'" >&2; exit 1; }

tmpfile=$(mktemp ~/.$CMD.XXXXXX) || exit 1

if [ $# -gt 1 ]; then
    kern_afm=$2
else
    kern_afm=$(sed -n 's/^FontName *\(.*\)$/\1/p' "$1").afm
fi
[ -f $kern_afm ] || { echo "$CMD: Missing file '$kern_afm'" >&2; exit 1; }

(
sed '/^EndCharMetrics/,$d' "$1"
echo EndCharMetrics
if grep -q '^EndCharMetrics' $kern_afm; then
    sed -e '1,/^EndCharMetrics/d' -e '/^EndFontMetrics/,$d' $kern_afm
else
    sed '/^EndFontMetrics/,$d' $kern_afm
fi
echo EndFontMetrics
) >$tmpfile
mv -f $tmpfile "$1" && chmod go+r "$1"
.