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inc/IO/Scalar.pm  view on Meta::CPAN

#line 1
package IO::Scalar;


#line 147

use Carp;
use strict;
use vars qw($VERSION @ISA);
use IO::Handle;

use 5.005;

### Stringification, courtesy of B. K. Oxley (binkley):  :-)
use overload '""'   => sub { ${*{$_[0]}->{SR}} };
use overload 'bool' => sub { 1 };      ### have to do this, so object is true!

### The package version, both in 1.23 style *and* usable by MakeMaker:
$VERSION = "2.110";

### Inheritance:
@ISA = qw(IO::Handle);

### This stuff should be got rid of ASAP.
require IO::WrapTie and push @ISA, 'IO::WrapTie::Slave' if ($] >= 5.004);

#==============================

#line 175

#------------------------------

#line 185

sub new {
    my $proto = shift;
    my $class = ref($proto) || $proto;
    my $self = bless \do { local *FH }, $class;
    tie *$self, $class, $self;
    $self->open(@_);   ### open on anonymous by default
    $self;
}
sub DESTROY {
    shift->close;
}

#------------------------------

#line 210

sub open {
    my ($self, $sref) = @_;

    ### Sanity:
    defined($sref) or do {my $s = ''; $sref = \$s};
    (ref($sref) eq "SCALAR") or croak "open() needs a ref to a scalar";

    ### Setup:
    *$self->{Pos} = 0;          ### seek position
    *$self->{SR}  = $sref;      ### scalar reference
    $self;
}

#------------------------------

#line 232

sub opened {
    *{shift()}->{SR};
}

#------------------------------

#line 246

sub close {
    my $self = shift;
    %{*$self} = ();
    1;
}

#line 256



#==============================

#line 266


#------------------------------

#line 276

sub flush { "0 but true" }

#------------------------------