#!/bin/sh
# ensure that ls does not stat a symlink in an unusual case

# Copyright (C) 2007 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/>.

if test "$VERBOSE" = yes; then
  set -x
  ls --version
fi

. $srcdir/../envvar-check
. $srcdir/../strace

pwd=`pwd`
t0=`echo "$0"|sed 's,.*/,,'`.tmp; tmp=$t0/$$
trap 'status=$?; cd "$pwd" && chmod -R u+rwx $t0 && rm -rf $t0 && exit $status' 0
trap '(exit $?); exit $?' 1 2 13 15

framework_failure=0
mkdir -p $tmp || framework_failure=1
cd $tmp || framework_failure=1

touch x || framework_failure=1
chmod a+x x || framework_failure=1
ln -s x link-to-x || framework_failure=1

if test $framework_failure = 1; then
  echo "$0: failure in testing framework" 1>&2
  (exit 1); exit 1
fi

fail=0

# ls from coreutils 6.9 would unnecessarily stat a symlink in an unusual case:
# When not coloring orphan and missing entries, and without ln=target,
# ensure that ls -F (or -d, or -l: i.e., when not dereferencing)
# does not stat a symlink to directory, and does still color that
# symlink and an executable file properly.

LS_COLORS='or=0:mi=0:ex=01;32:ln=01;35' \
  strace -qe stat ls -F --color=always x link-to-x > out 2> err || fail=1

# With coreutils 6.9 and earlier, this file would contain a
# line showing ls had called stat on "x".
test -s err && fail=1

# Check that output is colorized, as requested, too.
{
  printf '\033[0m\033[01;35mlink-to-x\033[0m@\n'
  printf '\033[01;32mx\033[0m*\n'
  printf '\033[m'
} > exp || fail=1

cmp out exp || fail=1
test $fail = 1 && diff out exp 2> /dev/null

(exit $fail); exit $fail