Hi all,

I've often found excellent solutions on this site so I'm hoping I can get some help with this one.

I have a pattern and a string. I'd like to search the string for the pattern and where it matches return the string that matches and the start and end position in the string of the match. If there are multiple matches I'd like to return this data for all the matches.

I think I'm on to something with the following but I'm not quite there. Any suggestions would be very much appreciated.

#!/usr/bin/perl

use strict;

my $string = "CATINTHEHATWITHABAT";
my $regex = '\wAT';
my @matches = ();

foreach my $match ($string =~ /($regex)/gi){
 my $length = length($&);
 my $pos = length($`);
 my $start = $pos + 1;
 my $end = $pos + $length;
 my $hitpos = "$start-$end";
 push @matches, "$match found at $hitpos ";
 }

print "$_\n" foreach @matches;

[download]
Cheers, Richard

In reply to Match, Capture and get position of multiple patterns in the same string by richardwfrancis

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.