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lib/IO/Busy.pm  view on Meta::CPAN

    "That input was ignored. Please don't press any keys yet.\n",
    "That input was ignored. Please wait a little longer.\n",
    "That input was also ignored. You might as well just wait, you know.\n",
   # "Look, there's no point typing yet. Your input isn't going anywhere.\n",
    #"Are you learning impaired? DON'T. TYPE. YET.\n",
    #"Okay, fine. Type whatever you like. Whatever makes you happy.\n",
    #"La la la la. I can't hear you.\n",
    "",
);

sub busy (&) :Export(:MANDATORY) {
    my ($block_ref) = @_;
    my $count = 0;

    my ($read, $write);
    pipe $read, $write;
    my $child = fork;
    if (!$child) {
        close $read;
        $write->autoflush(1);
        while (1) {

lib/IO/Busy.pm  view on Meta::CPAN

=head1 VERSION

This document describes IO::Busy version 0.0.3


=head1 SYNOPSIS

    use IO::Busy;

    my $fh = busy {
        non_interactive_stuff();
    };

  
=head1 DESCRIPTION

This module exports a single subroutine, named C<busy>. That subroutine takes
a single argument, which must be a block of code. C<busy> forks off a separate
process that intercepts and stores any input, then executes the block (in the
original process). 

If the user types anything during the execution of the block, that input
does not appear on the STDIN of the original process. Instead the busy
block informs the user that their input is not being received, and
stores the input in a separate filehandle. That filehandle is then
returned by the C<busy> call, at the end of the block's execution, at which
time STDIN is reconnected to the process.


=head1 INTERFACE 

=head2 $FH = busy {...}

The C<busy> subroutine expects a code block as its only argument. It executes
the block, intercepting any input during that execution. It returns a
filehandle opened for reading, from which the intercepted input can be re-read
if desired.


=head1 DIAGNOSTICS

=over

=item That input was ignored. %s

You typed something whilst the C<busy> block was executing. The C<busy> did
its job and ignored the input, warning you of the fact.

=back

=head1 CONFIGURATION AND ENVIRONMENT

IO::Busy requires no configuration files or environment variables.


=head1 DEPENDENCIES

lib/IO/Busy.pm  view on Meta::CPAN

=head1 INCOMPATIBILITIES

Will not work on systems that cannot C<fork> correctly.


=head1 BUGS AND LIMITATIONS

No bugs have been reported.

Please report any bugs or feature requests to
C<bug-io-busy@rt.cpan.org>, or through the web interface at
L<http://rt.cpan.org>.


=head1 AUTHOR

Damian Conway  C<< <DCONWAY@cpan.org> >>


=head1 LICENCE AND COPYRIGHT