Hello sandy105,

Yes, you have to allow for text such as “info - ” between the bracketed parts. But you don’t have to capture it. No need to capture the contents of the third bracketed part either, if you don’t need it:

#! perl
use strict;
use warnings;

while (<DATA>)
{
    / \[ ([^]]+) \] .* \[ ([^]]+) \] .* \[ [^]]+ \] \s+ (.*) /x or nex
+t;

    my ($part1, $part2, $part3) = ($1, $2, $3);

    print "1: |$part1| 2: |$part2| 3: |$part3|\n";
}

__DATA__
[part1-dateA] info - [..part2..] [..part3..] part4

[part1-dateB] log - [..part2..] [..part3..] part4

[download]

Output:

22:04 >perl 972_SoPW.pl
1: |part1-dateA| 2: |..part2..| 3: |part4|
1: |part1-dateB| 2: |..part2..| 3: |part4|

22:04 >

[download]

Note: I’ve added an /x modifier to the regex and whitespace within to make it easier to read.

Hope that helps,

Athanasius <°(((>< contra mundum Iustus alius egestas vitae, eros Piratica,

In reply to Re: RegEX Doubt by Athanasius
in thread RegEX Doubt by sandy105

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.