This routine returns a code reference that does an animated rotating bar. If you give it a numeric argument of, say, 25 it will only turn the bar on the the 25th, 50th etc. invocation. It's pretty crude having been written when I was new to Perl.

sub init_tumble
{
    my $every = shift || 0;
    my(@tumble) = ('-', '\\', '|', '/');
    my $tsub = 0;
    my $count = 0;
    my $rs = sub
        {
             $count++;
             $saved_autoflush = STDOUT->autoflush;
             if($every)
             {
                 return if $count % $every;
             }
             STDOUT->autoflush(1);
             print "$tumble[$tsub++]\b";
             $tsub = 0 if $tsub > 3;
             STDOUT->autoflush($saved_autoflush);
         };
    return $rs;
}

[download]

You would call it like this

my $tumble = init_tumble(25)
...
while(some condition)
{
    $tumble->();
    ...
    do some stuff
    ...
}

[download]

I hope this is of use.

Cheers,

JohnGG

In reply to Re: "percent task completed progress bar" in cli interface, how? by johngg
in thread "percent task completed progress bar" in cli interface, how? by leocharre

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.