#!/bin/sh

# Test NUL bytes in patterns and data.

# Copyright 2014-2017 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/>.

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

# Add "." to PATH for the use of get-mb-cur-max.

path_prepend_ .

locales=C

for locale in en_US.iso885915 en_US.UTF-8; do

  get-mb-cur-max en_US.UTF-8 >/dev/null 2>&1 && locales="$locales $locale"

done

fail=0

for left in '' a '#' '\0'; do

  for right in '' b '#' '\0'; do

    data="$left\\0$right"

    printf "$data\\n" >in || framework_failure_

    for hat in '' '^'; do

      for dollar in '' '$'; do

        for force_regex in '' '\\(\\)\\1'; do

          pat="$hat$force_regex$data$dollar"

          printf "$pat\\n" >pat || framework_failure_

          for locale in $locales; do

            LC_ALL=$locale grep -f pat in

            status=$?

            test $status -eq 0 || test $status -eq 1 ||

              fail_ "'$pat' caused an error"

            LC_ALL=$locale grep -a -f pat in | cmp -s - in ||

              fail_ "-a '$pat' does not match '$data'"

          done

        done

      done

    done

  done

done

(echo xxx && yes yyy | sed 100000q && printf 'z\n\0') >in || framework_failure_

echo xxx >exp || framework_failure_

grep xxx in >out || fail=1

compare exp out || fail=1

printf '%s\n' xxx 'Binary file in matches' > exp || framework_failure_

grep -E 'xxx|z' in >out || fail=1

compare exp out || fail=1

printf '%s\0' 'abcadc' >in || framework_failure_

printf '%s\0' 'abc' 'adc' >exp || framework_failure_

grep -oz 'a[^c]*c' in >out || fail=1

compare exp out || fail=1

Exit $fail