Utility to bump revision of a list of ports (MacPorts)

port-revbump

#!/bin/sh
set -euo pipefail

root=
while getopts D: opt; do
	case $opt in
	D) root=$OPTARG ;;
	?) exit 2
	esac
done
shift $((OPTIND-1))

port info --line --portdir "$@" | sort | uniq | while read dir; do
	if [ "$root" ]; then
		dir=$root/$dir
	fi
	f=$dir/Portfile
	n=$(awk '/^ *revision *[0-9]+/ {++i} END {print i+0}' "$f")
	if [ "$n" -gt 1 ]; then
		echo >&2 "skipping $f (more than one revision line)"
		continue
	fi
	if [ "$n" -eq 0 ]; then
		echo >&2 "skipping $f (revision not found)"
		continue
	fi
	newrev=$(awk '/^ *revision *[0-9]+/ {print $2+1}' "$f")
	ed -s "$f" <<-EOF
	/^ *revision/s/[0-9][0-9]*/$newrev/
	w
	q
	EOF
done