#!/bin/bash
#
# finddeps - find packages that depend on a given depname
#
# License: Unspecified

. "$(librelib messages)"

match=$1

usage() {
	print 'Usage: %s <depname>' "${0##*/}"
	print 'Find packages that depend on a given depname.'
	echo
	prose 'Run this script from the top-level directory of your ABS tree.'
}
if [[ -z $match ]]; then
	usage >&2
	exit 1
fi
if [[ $match = '-h' ]]; then
	usage
	exit 0
fi

find . -type d | while read -r d; do
	if [[ -f "$d/PKGBUILD" ]]; then
		pkgname=() depends=() makedepends=() optdepends=()
		# shellcheck source=PKGBUILD.proto
		. "$d/PKGBUILD"
		for dep in "${depends[@]}"; do
			# lose the version comparator, if any
			depname=${dep%%[<>=]*}
			[[ $depname = "$match" ]] && echo "$d (depends)"
		done
		for dep in "${makedepends[@]}"; do
			# lose the version comparator, if any
			depname=${dep%%[<>=]*}
			[[ $depname = "$match" ]] && echo "$d (makedepends)"
		done
		for dep in "${optdepends[@]/:*}"; do
			# lose the version comaparator, if any
			depname=${dep%%[<>=]*}
			[[ $depname = "$match" ]] && echo "$d (optdepends)"
		done
	fi
done