#!/bin/sh

# Check that "grep -r" does the right thing with symbolic links.

# Copyright (C) 2012-2017 Free Software Foundation, Inc.

# This program is free software: you can redistribute it and/or modify

# it under the terms of the GNU General Public License as published by

# the Free Software Foundation, either version 3 of the License, or

# (at your option) any later version.

# This program 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 General Public License for more details.

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

# along with this program.  If not, see <http://www.gnu.org/licenses/>.

# written by Paul Eggert

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

mkdir dir || framework_failure_

echo a > dir/a || framework_failure_

echo b > dir/b || framework_failure_

ln -s a dir/c || framework_failure_

ln -s . dir/d || framework_failure_

ln -s dangling dir/e || framework_failure_

touch out || framework_failure_

for recursion in '' -r -R

do

  for files in '' '*'

  do

    case $recursion,$files in

      -R,* | *,'*') expected_status=2 ;;

      *) expected_status=0 ;;

    esac

    (cd dir && grep $recursion '^' $files grepout

    test $? -eq $expected_status || fail=1

    case $recursion,$files in

      ,)

         exp='a\n' ;;

      ,'*' | -R,)

         exp='a:a\nb:b\nc:a\n' ;;

      -r,)

         exp='a:a\nb:b\n' ;;

      -r,'*')

         exp='a:a\nb:b\nc:a\nd/a:a\nd/b:b\n' ;;

      -R,'*')

         exp='a:a\nb:b\nc:a\nd/a:a\nd/b:b\nd/c:a\n' ;;

      *)

         framework_failure_ ;;

    esac

    printf "$exp" >exp || framework_failure_

    LC_ALL=C sort grepout >out-t || fail=1

    # Ignore "Binary file d matches" on systems for which

    # reading from a directory actually succeeds.

    grep -v Binary out-t > out; case $? in 0|1) ;; *) fail=1;; esac

    compare exp out || fail=1

  done

done

Exit $fail