If you need to extract the exact source code, it may be quite difficult. If it is sufficient to get a functional equivalent, look into B::Deparse; from the docs:

  use B::Deparse;
  $deparse = B::Deparse->new("-p", "-sC");
  $body = $deparse->coderef2text(\&func);

[download]
and here's a specific example as a one-liner:
  zen% perl -MB::Deparse -MCarp -wle 'print B::Deparse->new("-p","-sC"
+)->coderef2text(\&Carp::confess)'
  {
      package Carp;
      die(longmess(@_));
  }
  zen%

[download]

See the rest of the docs for full details of the options available.

Hugo

In reply to Re: Extract subroutines from a Perl script. OR: "Only perl can parse Perl." But can it help me to do so? by hv
in thread Extract subroutines from a Perl script. OR: "Only perl can parse Perl." But can it help me to do so? by muba

Title:
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, details, 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, summary, 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.