Beefy Boxes and Bandwidth Generously Provided by pair Networks
Keep It Simple, Stupid
 
PerlMonks  

Comment on

( #3333=superdoc: print w/ replies, xml ) Need Help??

You can return immediately if the string is less than or equal to the desired length. Then it depends on what you want to do to make it pretty. I have a couple of routines like this:

sub shorten_string { my ( $string, $length ) = @_; $length ||= 64; $length = 10 if $length < 10; return $string unless length($string) > $length; my $chunk = int($length/2)-3; return substr($string,0,$chunk+1) . ' ... ' . substr($string,-$chunk +); } sub shorten_url { my ( $url, $length ) = @_; $length ||= 64; return $url unless $url and length($url) > $length; ( $url ) = split /\?/, $url; return $url if length($url) < $length or $url =~ m!\w+://[^/]+/?$!; $url =~ s!(\w+://[^/]+)!!; my $domain = $1 ? "$1/ ... " : '... '; $length -= length $domain; return $domain if $length < 1; my @bits = split '/', $url; my @keepers = $url =~ m!/$! ? ('') : (); my $tail = 1; while ( my $bit = pop @bits ) { next unless $bit; $length -= (length($bit) + 1); unshift @keepers, $bit if $tail or $length > 0; $tail = 0; last if $length < 1; } return @keepers ? ( "$domain/".join'/',@keepers ) : $domain; }

cheers

tachyon


In reply to Re: In search of a better way to trim string length by tachyon
in thread In search of a better way to trim string by kiat

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!
  • 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, 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, sup, table, tbody, td, tfoot, th, thead, tr, tt, u, ul, wbr
  • Outside of code tags, you may need to use entities for some characters:
            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.
  • Log In?
    Username:
    Password:

    What's my password?
    Create A New User
    Chatterbox?
    and the web crawler heard nothing...

    How do I use this? | Other CB clients
    Other Users?
    Others making s'mores by the fire in the courtyard of the Monastery: (7)
    As of 2014-09-01 19:24 GMT
    Sections?
    Information?
    Find Nodes?
    Leftovers?
      Voting Booth?

      My favorite cookbook is:










      Results (16 votes), past polls