#!/bin/bash

#

# libseccomp test diff generator

#

# Copyright (c) 2013 Red Hat <pmoore@redhat.com>

# Author: Paul Moore <paul@paul-moore.com>

#

#

# This library is free software; you can redistribute it and/or modify it

# under the terms of version 2.1 of the GNU Lesser General Public License as

# published by the Free Software Foundation.

#

# This library is distributed in the hope that it will be useful, but WITHOUT

# ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or

# FITNESS FOR A PARTICULAR PURPOSE.  See the GNU Lesser General Public License

# for more details.

#

# You should have received a copy of the GNU Lesser General Public License

# along with this library; if not, see <http://www.gnu.org/licenses>.

#

####

# functions

#

# Print out script usage details

#

function usage() {

cat << EOF

usage: regression [-h] LABEL_1 LABEL_2

libseccomp test diff generator script

optional arguments:

  -h             show this help message and exit

EOF

}

#

# Print the test header

#

# Arguments:

#     1    string containing generated test number

#

function print_test() {

	printf "Test %s comparison:\n" "$1"

}

#

# Compare the tests

#

# Arguments:

#     1    string containing first test label

#     2    string containing second test label

#

function diff_tests() {

	local batch_name

	local label_a

	local label_b

	local file_a

	local file_b

	if [[ -n $1 ]]; then

		label_a=".$1"

	else

		label_a=""

	fi

	if [[ -n $2 ]]; then

		label_b=".$2"

	else

		label_b=""

	fi

	for file in *-sim-*.tests; do

		# extract the batch name from the file name

		batch_name=$(basename $file .tests)

		print_test "$batch_name"

		file_a="${batch_name}${label_a}"

		file_b="${batch_name}${label_b}"

		if [[ -r "$file_a.pfc" && -r "$file_b.pfc" ]]; then

			diff -pu "$file_a.pfc" "$file_b.pfc"

		fi

		if [[ -r "$file_a.bpf" && -r "$file_b.bpf" ]]; then

			diff -pu "$file_a.bpf" "$file_b.bpf"

		fi

		if [[ -r "$file_a.bpfd" && -r "$file_b.bpfd" ]]; then

			diff -pu "$file_a.bpfd" "$file_b.bpfd"

		fi

	done

	return

}

####

# main

opt_label=

opt_disasm=0

while getopts "h" opt; do

	case $opt in

	h|*)

		usage

		exit 1

		;;

	esac

done

stats_all=0

stats_failure=0

# display the test output and run the requested tests

echo "=============== $(date) ==============="

echo "Comparing Test Output (\"testdiff $*\")"

diff_tests "$1" "$2"

echo "============================================================"

# exit

exit 0