File Coverage

blib/lib/IO/Automatic.pm

Criterion	Covered	Total	%
statement	8	16	50.0
branch	1	8	12.5
condition			n/a
subroutine	2	2	100.0
pod	0	1	0.0
total	11	27	40.7

use strict;
package IO::Automatic;
our $VERSION = '0.03';

sub new {
    my $class = shift;
    my ($dest) = @_;  # preserve @_ but extract $dest to examine it

    if (ref $dest eq 'SCALAR') {
        require IO::Scalar;
        return IO::Scalar->new( @_ );
    }
    return $dest if ref $dest eq 'GLOB';

    $! = "Don't know what to do with something of type ". ref $dest;
    return if ref $dest;

    if ( $dest =~ /\.(?:gz|Z)$/ ) {
        require IO::Zlib;
        return IO::Zlib->new( @_ );
    }
    require IO::File;
    return IO::File->new( @_ );
}

1;

=head1 NAME

IO::Automatic - automatically choose a suitable IO::* module

=head1 SYNOPSIS

  use IO::Automatic;

  # scalar
  my $scalar;
  my $io = IO::Automatic->new( \$scalar );
  print $io "Hello World\n";

=head1 DESCRIPTION

IO::Automatic provides a simple factory for creating new output
handles.

Several types of automatic conversion are supplied.  If no conversion
can be done, we return false.  Only the first argument is examined to
determine, but all the arguments will be passed through so you can
also supply file mode specifications.

=head2 Scalar references

Scalar references are translated into IO::Scalar objects.

=head2 Glob references

Globs are returned untouched as it is assumed they will already be
suitable for use as IO handles.

=head2 Plain scalar

A plain scalar is assumed to be a filename and so is transformed into
an IO::Zlib or IO::File object as appropriate.

=head1 AUTHOR

Richard Clamp

=head1 COPYRIGHT

Copyright (C) 2003, 2005 Richard Clamp.  All Rights Reserved.

This module is free software; you can redistribute it and/or modify it
under the same terms as Perl itself.

=head1 SEE ALSO

L, L, L

=cut