#
# CDDL HEADER START
#
# The contents of this file are subject to the terms of the
# Common Development and Distribution License (the "License").
# You may not use this file except in compliance with the License.
#
# You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
# or http://www.opensolaris.org/os/licensing.
# See the License for the specific language governing permissions
# and limitations under the License.
#
# When distributing Covered Code, include this CDDL HEADER in each
# file and include the License file at usr/src/OPENSOLARIS.LICENSE.
# If applicable, add the following below this CDDL HEADER, with the
# fields enclosed by brackets "[]" replaced with your own identifying
# information: Portions Copyright [yyyy] [name of copyright owner]
#
# CDDL HEADER END
#

#
# Copyright 2007 Sun Microsystems, Inc.  All rights reserved.
# Use is subject to license terms.
#

. $STF_SUITE/include/libtest.shlib

#
# According to $elements, $prefix and $separator, the function random produce
# the number of $counter combination.
#
# $1 elements which is used to get the combination.
# $2 prefix is appended to the combination
# $3 separator between the combination, such as ' ' or ','
# $4 counter is the number of combination which you want to get.
#
function gen_option_str # $elements $prefix $separator $counter
{
	typeset elements=""
	typeset prefix=${2}
	typeset separator=${3}
	typeset -i counter=${4:-0}
	typeset -i i=0
	typeset comb_str=""

	for e in $1; do
		elements[i]="$e"
		(( i += 1 ))
	done
	(( ${#elements[@]} == 0 )) && log_fail "The elements can't be empty."

	typeset -i item=0
	typeset -i j=0
	typeset -i numb_item=0

	# Loop and get the specified number combination strings.
	i=0
	while (( i < counter )); do
		j=0
		numb_item=0
		comb_str=""

		# Get random number items for each combinations.
		(( numb_item = ($RANDOM % ${#elements[@]}) + 1 ))

		while (( j < numb_item )); do
			# Random select elements from the array
			(( item = $RANDOM % ${#elements[@]} ))

			if (( ${#comb_str} == 0 )); then
				comb_str=${elements[item]}
			else
				comb_str=$comb_str$separator${elements[item]}
			fi
			(( j += 1 ))
		done

		echo "$prefix$comb_str"

		(( i += 1 ))
	done
}

#
# Cleanup the volume snapshot and filesystem snapshot were created for
# this test case.
#
function cleanup
{
	datasetexists $TESTPOOL/$TESTVOL@$TESTSNAP && \
		destroy_snapshot $TESTPOOL/$TESTVOL@$TESTSNAP
	datasetexists $TESTPOOL/$TESTFS@$TESTSNAP && \
		destroy_snapshot $TESTPOOL/$TESTFS@$TESTSNAP

	[[ -e $TESTFILE0 ]] && log_must $RM $TESTFILE0
}