Your script appears to be working correctly for me. Try this test program

#!/usr/bin/perl
use strict;
use warnings;
use Text::Wrap;
use Text::CSV_XS;

my $csv = Text::CSV_XS->new (
 { binary => 1, eol => "\r\n", auto_diag => 1 });
open my $fh, ">", "wraptest.csv" or die "$!";

my @data = (
  ['1a this is more than 20 characters',
   '',
   '1c and another one that is more than 20 characters'],
  ['2a this is more than 20 characters',
   '',
   '2c and another one that is more than 20 characters'], 
);

for my $row_index (0..1){
  my @row;
  for my $col_index (0..2){
    my $source_cell = $data[$row_index][$col_index];
    my $value;
    if ($source_cell){
      local $Text::Wrap::columns = 20;
      $value = wrap ("", "", $source_cell);
    }   
    push @row , $value;
  }
  $csv->print ($fh, \@row);
}
close $fh;

[download]
poj

In reply to Re^3: XLS to CSV file with Text wrap by poj
in thread XLS to CSV file with Text wrap by kshitij

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.