You can also use wget or libcurl in a thread or a piped open,and get progress out of it. With wget it's a bit harder because you have to filter it's output, and do regexes to get the percentage done. I just posted a method on comp.lang.perl.tk. Do a search at http://groups.google.com for "non-blocking downloads with indicator" and you will get one you can modify.

Or libcurl has an easy way to get download progress. Here is an example and you can fork-exec to run it, or use a thread to run it non-blocking and get your percentage back to your tk app. I just posted a way to do this here->Tk-with-worker-threads You can put the code below into the worker thread code, and pass a url to it through the shared hash


#!/usr/bin/perl
use warnings;
use strict;
use WWW::Curl::easy;

# Read URL to get 
my $url = "http://zentara.zentara.net/~zentara/cgi-bin/avi-out.cgi";

# Init the curl session 
my $curl = WWW::Curl::easy->new();
if ($curl == 0) {print "not ok $!\n "}

$curl->setopt(CURLOPT_NOPROGRESS, 0);
$curl->setopt(CURLOPT_FOLLOWLOCATION, 1);

sub prog_callb{
 my ($clientp,$dltotal,$dlnow,$ultotal,$ulnow)=@_;
 my $percentage = ($dlnow/$dltotal)*100;
 print STDERR "dltotal: $dltotal, dlnow: $dlnow\t", sprintf("%.0f",$pe
+rcentage),"% complete\n";
  return 0;
 }

$curl->setopt(CURLOPT_PROGRESSFUNCTION, \&prog_callb);

open HEAD, ">$0-head.out";
$curl->setopt(CURLOPT_WRITEHEADER, *HEAD);

open BODY, ">$0-body.out";
$curl->setopt(CURLOPT_FILE,*BODY);

$curl->setopt(CURLOPT_URL, $url);

# Add some additional headers to the http-request: 
#my @myheaders; 
#$myheaders[0] = "Server: www"; 
#$myheaders[1] = "User-Agent: Perl interface for libcURL"; 
#$curl->setopt(CURLOPT_HTTPHEADER, \@myheaders); 

# Go get it 
my $retcode=$curl->perform();

if ($retcode == 0) {
    my $bytes = $curl->getinfo(CURLINFO_SIZE_DOWNLOAD);
    print STDERR "$bytes bytes read ";
    my $realurl=$curl->getinfo(CURLINFO_EFFECTIVE_URL);
    my $httpcode=$curl->getinfo(CURLINFO_HTTP_CODE);
    print STDERR "effective fetched url (http code: $httpcode) was: $u
+rl ";
} else {
   # We can acces the error message in $errbuf here 
    print STDERR "$retcode / ".$curl->errbuf."\n";
}

exit;

[download]
I'm not really a human, but I play one on earth. flash japh

In reply to Re: FTP with progress bar in Tk? by zentara
in thread FTP with progress bar in Tk? by jdtoronto

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