Beefy Boxes and Bandwidth Generously Provided by pair Networks
Keep It Simple, Stupid

comment on

( [id://3333]=superdoc: print w/replies, xml ) Need Help??

Some notes before I get started:

  • Could you remove your <pre>..</pre> tags please? Use <p> at the start of paragraphs. Use <c>..</c> or <code>..</code> around computer text, code and data..

  • You seem to be reinventing parts of IPC::Run. Is there really a need for this module?

I have couple of problems in dealing with Filehandlers

They are called "file handles". Note the space and the lack of "r".

Want to check whether input filehandler is ready to receive input

can_write and select in IO::Select will tell you that on non-Windows systems. I don't think it's possible in Windows. (Alternate paradigms are used.)

Issues with output and error filehandlers in returning buffer text

Sorry, but you can't control whether another process buffers its output or not unless the specific program provides you a specific means (e.g. a command line option) of doing so.

However, you can fool most by creating a pseudo-tty. See IPC::Run and IO::Pty.

Filehandle GEN0 opened only for output at line 89.

You should have two selectors. One for inputs and one for outputs.

sub DESTROY { my $self = shift; &stop; }

That should be

sub DESTROY { my $self = shift; $self->stop(); }

stop expects to be called as a method.

local $SIG{INT} = 'IGNORE'; kill INT => -$$;

That should be

kill INT => $self->{pid};

There's no reason to kill every child.

In reply to Re: Queries on open3 by ikegami
in thread Queries on open3 by thiagu_mvt

Use:  <p> text here (a paragraph) </p>
and:  <code> code here </code>
to format your post, it's "PerlMonks-approved HTML":

  • Posts are HTML formatted. Put <p> </p> tags around your paragraphs. Put <code> </code> tags around your code and data!
  • Titles consisting of a single word are discouraged, and in most cases are disallowed outright.
  • Read Where should I post X? if you're not absolutely sure you're posting in the right place.
  • Please read these before you post! —
  • Posts may use any of the Perl Monks Approved HTML tags:
    a, abbr, b, big, blockquote, br, caption, center, col, colgroup, dd, del, div, dl, dt, em, font, h1, h2, h3, h4, h5, h6, hr, i, ins, li, ol, p, pre, readmore, small, span, spoiler, strike, strong, sub, sup, table, tbody, td, tfoot, th, thead, tr, tt, u, ul, wbr
  • You may need to use entities for some characters, as follows. (Exception: Within code tags, you can put the characters literally.)
            For:     Use:
    & &amp;
    < &lt;
    > &gt;
    [ &#91;
    ] &#93;
  • Link using PerlMonks shortcuts! What shortcuts can I use for linking?
  • See Writeup Formatting Tips and other pages linked from there for more info.
  • Log In?

    What's my password?
    Create A New User
    Domain Nodelet?
    and the web crawler heard nothing...

    How do I use this?Last hourOther CB clients
    Other Users?
    Others taking refuge in the Monastery: (2)
    As of 2024-07-16 06:30 GMT
    Find Nodes?
      Voting Booth?

      No recent polls found

      erzuuli‥ 🛈The London Perl and Raku Workshop takes place on 26th Oct 2024. If your company depends on Perl, please consider sponsoring and/or attending.