newline-1

实战Linux编程的原代码,希望对学驱动的人能有所帮助

#!/bin/sh

: ${PERL=perl}
: ${srcdir=.}

case "$PERL" in
  *'missing perl')
  echo 1>&2 "$0: configure didn't find a usable version of Perl," \
    "so can't run this test"
  exit 77
  ;;
esac

# See if we can create a filename that contains a newline.
# Be careful to do it in a subshell so that we can redirect the
# error output if it fails.
(> 'a
b') 2> /dev/null \
  && filename_may_contain_newline=yes \
  || filename_may_contain_newline=no
rm -f 'a
b'

if test $filename_may_contain_newline = no; then
  echo 1>&2 "$0: can't create newline-containing file name," \
    "so can't run this test"
  exit 77
fi

exec $PERL -w -I$srcdir/.. -MFetish -- - <<\EOF
require 5.003;
use strict;

(my $program_name = $0) =~ s|.*/||;

# Turn off localisation of executable's ouput.
@ENV{qw(LANGUAGE LANG LC_ALL)} = ('C') x 3;

my $degenerate = "d41d8cd98f00b204e9800998ecf8427e";
my $t = '--text';

my @Tests =
    (
     ['newline', $t, {IN=> {"a\nb"=> ''}}, {OUT=>"\\$degenerate  a\\nb\n"}],
    );

my $save_temps = $ENV{DEBUG};
my $verbose = $ENV{VERBOSE};

my $prog = $ENV{PROG} || die "$0: \$PROG not specified in environment\n";
my $fail = run_tests ($program_name, $prog, \@Tests, $save_temps, $verbose);
exit $fail;
EOF