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perlman:IO::Pipe

by root (Scribe)
on Dec 23, 1999 at 00:52 UTC ( #1220=perlfunc: print w/replies, xml ) Need Help??

IO::Pipe

See the current Perl documentation for IO::Pipe.

Here is our local, out-dated (pre-5.6) version:


IO::pipe - supply object methods for pipes



        use IO::Pipe;

        $pipe = new IO::Pipe;

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

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

IO::Pipe provides an interface to createing pipes between processes.


CONSTRCUTOR

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

Handle


AUTHOR

Graham Barr <bodg@tiuk.ti.com>


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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[LanX]: (not a high priority bug because I can use some HTML entities in the second string)
[Corion]: base64 is padded to a multiple of 4 chars (or something)
[LanX]: misunderstanding, I joined them before converting to base64
[Corion]: Also, I would be wary of encodings and try to make really sure that both input strings are UTF-8. Maybe join the input strings from one source together to see whether they decode as bad or not
[Corion]: LanX: Then the problem should persist without encoding to base64 too ;)
[LanX]: I think it's a flag problem ... I'll produce a reprodocable example for SOPW
[Corion]: "flag problem" to me sounds like "contains UTF-8 bytes but was never properly decoded to an UTF-8 string"
[LanX]: not my code ...
[choroba]: yeah, sounds like one of the strings is not flagged as UTF-8
[choroba]: which usually means its input wasn't handled correctly

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