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NAME

     IO::pipe - supply object methods for pipes



SYNOPSIS
             use IO::Pipe;

             $pipe = new IO::Pipe;

             if($pid = fork()) { # Parent
                 $pipe->reader();

                 while(<$pipe> {
                     ....
                 }

             }
             elsif(defined $pid) { # Child
                 $pipe->writer();

                 print $pipe ....
             }

             or

             $pipe = new IO::Pipe;

             $pipe->reader(qw(ls -l));

             while(<$pipe>) {
                 ....
             }




DESCRIPTION
     IO::Pipe provides an interface to creating pipes between
     processes.



CONSTRUCTOR
     new ( [READER, WRITER] )
         Creates a IO::Pipe, which is a reference to a newly
         created symbol (see the Symbol package). IO::Pipe::new
         optionally takes two arguments, which should be objects
         blessed into IO::Handle, or a subclass thereof. These
         two objects will be used for the system call to pipe. If
         no arguments are given then method handles is called on
         the new IO::Pipe object.

         These two handles are held in the array part of the GLOB
         until either reader or writer is called.



METHODS

     reader ([ARGS])
         The object is re-blessed into a sub-class of IO::Handle,
         and becomes a handle at the reading end of the pipe. If
         ARGS are given then fork is called and ARGS are passed
         to exec.

     writer ([ARGS])
         The object is re-blessed into a sub-class of IO::Handle,
         and becomes a handle at the writing end of the pipe. If
         ARGS are given then fork is called and ARGS are passed
         to exec.

     handles ()
         This method is called during construction by
         IO::Pipe::new on the newly created IO::Pipe object. It
         returns an array of two objects blessed into
         IO::Pipe::End, or a subclass thereof.



SEE ALSO
     the IO::Handle manpage



AUTHOR
     Graham Barr <[email protected]>



COPYRIGHT
     Copyright (c) 1996 Graham Barr. All rights reserved. This
     program is free software; you can redistribute it and/or
     modify it under the same terms as Perl itself.









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