#!/bin/sh
# Check "printf" with long arguments.

# Copyright (C) 2006 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 2 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, write to the Free Software
# Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
# 02110-1301, USA.

: ${PERL=perl}

$PERL -e 1 > /dev/null 2>&1 || {
  echo 1>&2 "$0: configure didn't find a usable version of Perl," \
    "so can't run this test"
  exit 77
}

framework_failure=0
pwd=`${BUILD_SRC_DIR?}/pwd` || framework_failure=1
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

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

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

ARGV_0=$0
export ARGV_0

CWD=$pwd/$tmp
export CWD

$PERL -w -- - <<\EOF

# Show that pwd works even when the length of the resulting
# directory name is longer than PATH_MAX.
use strict;
use Cwd;

(my $ME = $ENV{ARGV_0}) =~ s|.*/||;

my $cwd = $ENV{CWD};
my $z = 'z' x 31;
my $n = 256;
my $expected = $cwd . ("/$z" x $n);

my $i = 0;
do
  {
    mkdir $z, 0700
      or die "$ME: at depth $i: $!\n";
    chdir $z;
  }
until (++$i == $n);

my $build_src_dir = $ENV{BUILD_SRC_DIR};
$build_src_dir
  or die "$ME: envvar BUILD_SRC_DIR not defined\n";
my $pwd_binary = "$build_src_dir/pwd";
-x $pwd_binary
  or die "$ME: $pwd_binary is not an executable file\n";
chomp (my $actual = `$pwd_binary`);
if ($expected ne $actual)
  {
    my $e_len = length $expected;
    my $a_len = length $actual;
    warn "expected len: $e_len\n";
    warn "actual len:   $a_len\n";
    warn "expected: $expected\n";
    warn "actual: $actual\n";
    exit 1;
  }
EOF