#!/bin/sh
# SPDX-License-Identifier: 0BSD

###############################################################################
#
# Author: Jonathan Nieder
#
###############################################################################

# If scripts weren't built, this test is skipped.
# When this is run from CMake, $1 is a relative path
# to the directory with the executables and the scripts.
XZ=${1:-../src/xz}/xz
XZDIFF=${1:-../src/scripts}/xzdiff
XZGREP=${1:-../src/scripts}/xzgrep

for i in XZ XZDIFF XZGREP; do
	eval test -x "\$$i" && continue
	exit 77
done

# If decompression support is missing, this test is skipped.
# Installing the scripts in this case is a bit silly but they
# could still be used with other decompression tools so configure
# doesn't automatically disable scripts if decoders are disabled.
if test ! -f ../config.h \
		|| grep 'define HAVE_DECODERS' ../config.h > /dev/null ; then
	:
else
	echo "Decompression support is disabled, skipping this test."
	exit 77
fi

PATH=`pwd`/${1:-../src/xz}:$PATH
export PATH

test -z "$srcdir" && srcdir=.
preimage=$srcdir/files/good-1-check-crc32.xz
samepostimage=$srcdir/files/good-1-check-crc64.xz
otherpostimage=$srcdir/files/good-1-lzma2-1.xz

"$XZDIFF" "$preimage" "$samepostimage" >/dev/null
status=$?
if test "$status" != 0 ; then
	echo "xzdiff with no changes exited with status $status != 0"
	exit 1
fi

"$XZDIFF" "$preimage" "$otherpostimage" >/dev/null
status=$?
if test "$status" != 1 ; then
	echo "xzdiff with changes exited with status $status != 1"
	exit 1
fi

"$XZDIFF" "$preimage" "$srcdir/files/missing.xz" >/dev/null 2>&1
status=$?
if test "$status" != 2 ; then
	echo "xzdiff with missing operand exited with status $status != 2"
	exit 1
fi

# The exit status must be 0 when a match was found at least from one file,
# and 1 when no match was found in any file.
cp "$srcdir/files/good-1-lzma2-1.xz" xzgrep_test_1.xz
cp "$srcdir/files/good-2-lzma2.xz" xzgrep_test_2.xz
for pattern in el Hello NOMATCH; do
	for opts in "" "-l" "-h" "-H"; do
		echo "=> xzgrep $opts $pattern <="
		"$XZGREP" $opts $pattern xzgrep_test_1.xz xzgrep_test_2.xz
		echo retval $?
	done
done > xzgrep_test_output 2>&1

if cmp -s "$srcdir/xzgrep_expected_output" xzgrep_test_output ; then
	:
else
	echo "unexpected output from xzgrep"
	exit 1
fi

exit 0