I'm not intimately familiar with the Parse::RecDescent module, but here is one thing I noticed which could relate to your IP and Hostnames problem:

You said that "It will mistake an IP address like 199.92.100.35.100 as a valid IP." The code I'm looking at that you wrote is like this: 

IP         : /[0-9]+.[0-9]+.[0-9]+.[0-9]/

[download]

I have to assume that the part there which looks like an RE is, indeed, a Perl-like regular expression. That being the case, your first problem is that "." has special meaning in an RE: It matches anything except the newline character. So [0-9]+. means match one or more numeric digits followed by any character. Well, that's probably not what you really want. So at minimum, escape those dot characters within the RE: [0-9]+\.

The next thing is that your RE isn't rejecting items that contain MORE than what you're trying to match. The Owls book (O'Reilly: Mastering Regular Expressions, by Friedl) presents the following regexp for matching IP addresses: 

/^([01]?\d\d?|2[0-4]\d|25[0-5])\.([01]?\d\d?|2[0-4]\d|25[0-5])\.([01]?
+\d\d?|2[0-4]\d|25[0-5])\.([01]?\d\d?|2[0-4]\d|25[0-5])$/

[download]

Note: I added the $ to the end of the RE so that you're not passing strings that contain anything after the IP address. That may or may not be necessary in your case. Hopefully that will be robust enough to help.


Dave

In reply to Re: TNSNAMES.ORA and Recdescent by davido
in thread TNSNAMES.ORA and Recdescent by jmr4096

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.