#!/bin/sh
#
# Copyright (c) 2008 Joerg Sonnenberger <joerg@NetBSD.org>.
# All rights reserved.
#
# Redistribution and use in source and binary forms, with or without
# modification, are permitted provided that the following conditions
# are met:
# 1. Redistributions of source code must retain the above copyright
#    notice, this list of conditions and the following disclaimer.
# 2. Redistributions in binary form must reproduce the above copyright
#    notice, this list of conditions and the following disclaimer in the
#    documentation and/or other materials provided with the distribution.
#
# THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
# ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
# TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
# PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
# BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
# CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
# SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
# INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
# CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
# ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
# POSSIBILITY OF SUCH DAMAGE.
#

PKG_INFO="/usr/sbin/pkg_info"
PKG_DBDIR="/usr/pkg/pkgdb"

skip_manual=yes

usage()
{
cat << EOF
usage: $(basename "$0") [-a] [-K pkg_dbdir]
       Prints all automatically installed leaf packages.

  -a            Print all leaf packages, including manually installed ones.
  -K <dir>      Specify alternate package database (default: ${PKG_DBDIR})

EOF
exit 1
}

while [ $# -gt 0 ] ; do
	case "$1" in
	-a)
		skip_manual=no
		shift
		;;
	-K)
		PKG_DBDIR="$2"
		shift
		shift
		;;
	*)
		usage
		;;
	esac
done

${PKG_INFO} -K "${PKG_DBDIR}" -e '*' | while read pkg; do
	if [ -z "`${PKG_INFO} -K "${PKG_DBDIR}" -q -R ${pkg}`" ]; then
		if [ ${skip_manual} = "yes" ]; then
			if [ "`${PKG_INFO} -K "${PKG_DBDIR}" -Q automatic ${pkg} 2> /dev/null`" != yes ]; then
				continue
			fi
		fi
		echo ${pkg}
	fi
done
