/usr/share/perl5/IO/Handle/Prototype.pm is in libio-handle-util-perl 0.01-1.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 | package IO::Handle::Prototype;
use strict;
use warnings;
use Carp ();
use parent qw(IO::Handle::Util::Overloading);
sub new {
my ( $class, @args ) = @_;
my $cb = @args == 1 ? $args[0] : {@args};
bless {
cb => $cb,
}, $class;
}
sub _cb {
my $self = shift;
my $name = shift;
if ( my $cb = $self->{cb}{$name} ) {
return $self->$cb(@_);
} else {
Carp::croak("No implementation of '$name' provided for $self");
}
}
sub open { shift->_cb(open => @_) }
sub getline { shift->_cb(getline => @_) }
sub getlines { shift->_cb(getlines => @_) }
sub read { shift->_cb(read => @_) }
sub sysread { shift->_cb(sysread => @_) }
sub getc { shift->_cb(getc => @_) }
sub ungetc { shift->_cb(ungetc => @_) }
sub say { shift->_cb(say => @_) }
sub print { shift->_cb(print => @_) }
sub printf { shift->_cb(printf => @_) }
sub format_write { shift->_cb(format_write => @_) }
sub write { shift->_cb(write => @_) }
sub syswrite { shift->_cb(syswrite => @_) }
sub ioctl { shift->_cb(ioctl => @_) }
sub fcntl { shift->_cb(fcntl => @_) }
sub truncate { shift->_cb(truncate => @_) }
sub stat { shift->_cb(stat => @_) }
sub fileno { shift->_cb(fileno => @_) }
sub eof { shift->_cb(eof => @_) }
sub close { shift->_cb(close => @_) }
__PACKAGE__
# ex: set sw=4 et:
__END__
=pod
=head1 NAME
IO::Handle::Prototype - base class for callback based handles.
=head1 SYNOPSIS
my $fh = IO::Handle::Prototype->new(
getline => sub {
my $fh = shift;
...
},
);
=head1 DESCRIPTION
You probably want L<IO::Handle::Prototype::Fallback> instead.
=cut
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