Hi,

yesterday I somewhat fixed a version of my "progress bar fillup" I created after this thread. Most of the ideas came from tye.
This version uses a closure, and might be of use for one or another of you. Usage is simple:

my $pb = pb_fillup(<showlen>,<char>,<barlen>);
[download]

Initializes the progress-bar. It defines how long the data to be munged are (showlen), what character should be used for progress visualization (char) and how long the progress bar shall be (barlen). All 3 are scalars. If you wish to init a progress bar with a [#######    ] look&feel, that should show progress reading a file and be 40 chars wide, you could init it like that:

my $pb = pb_fillup(-s $file,'#',40);
[download]

Where $file is a name of an existing file. The calls doing the actual visualization are like that:

print $pb->(length $_);
[download]

You either give the closure the length of data you have munged or - if you omit the parameter - pb_fillup just does an increment. I´m sure, the code can be much optimized and beautified, but it´s pretty easy to use and does accomplish its task for me.

Bye
Richard

Oh! The code:

sub pb_fillup {
    my ($max,$char,$len) = @_;         # init look&feel
    my $old_slen = -1;                 # init old showlength
    my $cur = 0;                       # init current length
 
    return sub {
        $cur += @_ ? shift : 1;
        my $slen = int $cur/$max*$len;
        my $bar;
 
        if($slen != $old_slen) {
            $bar = $char x $slen;
            $bar .= ' ' x ($len - $slen);
 
        $| = 1;
            print '[',$bar,']';
            print "\b" x ($len+2);
        $| = 0;
            $old_slen = $slen;
        }
        return;
    }
}
[download]

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