#! /bin/sh

# Test for status code for GNU grep.

# status code

#  0 match found

#  1 no match

#  2 file not found

#

# Copyright (C) 2001, 2006, 2009-2017 Free Software Foundation, Inc.

#

# Copying and distribution of this file, with or without modification,

# are permitted in any medium without royalty provided the copyright

# notice and this notice are preserved.

. "${srcdir=.}/init.sh"; path_prepend_ ../src

fail=0

# should return 0 found a match

echo "abcd" | grep -E -e 'abc' > /dev/null 2>&1

if test $? -ne 0 ; then

        echo "Status: Wrong status code, test \#1 failed"

        fail=1

fi

# should return 1 found no match

echo "abcd" | grep -E -e 'zbc' > /dev/null 2>&1

if test $? -ne 1 ; then

        echo "Status: Wrong status code, test \#2 failed"

        fail=1

fi

# the filename MMMMMMMM.MMM should not exist hopefully

if test -r MMMMMMMM.MMM; then

        echo "Please remove MMMMMMMM.MMM to run check"

else

        # should return 2 file not found

        grep -E -e 'abc' MMMMMMMM.MMM > /dev/null 2>&1

        if test $? -ne 2 ; then

                echo "Status: Wrong status code, test \#3 failed"

                fail=1

        fi

        # should return 2 file not found

        grep -E -s -e 'abc' MMMMMMMM.MMM > /dev/null 2>&1

        if test $? -ne 2 ; then

                echo "Status: Wrong status code, test \#4 failed"

                fail=1

        fi

        # should return 0 (found a match) or 2 (file not found)

        echo "abcd" | grep -E -s 'abc' - MMMMMMMM.MMM > /dev/null 2>&1

        status=$?

        if test $status -ne 0 && test $status -ne 2 ; then

                echo "Status: Wrong status code, test \#5 failed"

                fail=1

        fi

        # should return 0 found a match

        echo "abcd" | grep -E -q -s 'abc' MMMMMMMM.MMM - > /dev/null 2>&1

        if test $? -ne 0 ; then

                echo "Status: Wrong status code, test \#6 failed"

                fail=1

        fi

        # should still return 0 found a match

        echo "abcd" | grep -E -q 'abc' MMMMMMMM.MMM - > /dev/null 2>&1

        if test $? -ne 0 ; then

                echo "Status: Wrong status code, test \#7 failed"

                fail=1

        fi

fi

Exit $fail