#! /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