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Home: Need a Custom or Prewritten Perl Program?: I need a program that...:
counter modifications



Jun 13, 2000, 8:11 PM

Post #1 of 3 (2904 views)
counter modifications Can't Post

<BLOCKQUOTE><font size="1" face="Arial,Helvetica,sans serif">code:</font><HR>


$url = '';
$ext = 'gif';
$file = '/home/www/web/scripts/count/count.txt';

print "Content-type: text/html\n\n";
open(COUNT, $file); $count = <COUNT>; close(COUNT); ++$count;
@nums = split(//, $count);

foreach $num (@nums) {$display = "<img src=$url/$num.$ext>"; print $display; } # image
#foreach $num (@nums) {$display = "$num"; print $display; } # text

open(NCOUNT, ">$file");
print NCOUNT $count;

i found this counter and i'm looking for somone to help me with modifications.

-i need reload protection; a file that will store ip's for 1 day (or a short period of time), then remove them.

-digit control. i want it so that i can specify the number of digits to be shown. for example, if i want 8 digits and my counter is currently at 123, it should show 00000123

-also, i'm not sure about structure, and i don't know if the coding is weak or not, i would appreciate help with that too.

thanks in advance for any help Smile.

[This message has been edited by parham_m_s (edited 06-13-2000).]

User / Moderator

Jun 13, 2000, 9:00 PM

Post #2 of 3 (2904 views)
Re: counter modifications [In reply to] Can't Post

You probably want to use File::CounterFile instead as it has error checking and uses flock() to enforce serial updates.

The 0 padding issue is also a doddle with (s)printf.

<BLOCKQUOTE><font size="1" face="Arial,Helvetica,sans serif">code:</font><HR>

#!/usr/bin/perl -wT

use strict;
use File::CounterFile;

my $url = '';
my $ext = 'gif';
my $file = '/home/www/web/scripts/count/count.txt';

printf q(<img src="%s/%08d.%s"> ),
File::CounterFile->new( $file, 0 )->inc,

As for the 'reload protection', I'm not an advocate of using IPs as unique identifiers: it's becoming more and more common for people to be using a proxy of some sort, and while you only see 1 IP, there may be 10s, 100s, or 1000s of people sharing that same IP.

If you must use IPs, then the easiest, efficient way I can think of would be to write the IPs out to a directory as filenames and then use the -M file test operator to help identify which filenames/IPs to delete after a day.

That way, you could check if the IP exists as a file: if it does, do nothing; if it doesn't, increment the counter.


Jun 14, 2000, 3:44 AM

Post #3 of 3 (2904 views)
Re: counter modifications [In reply to] Can't Post

i'm not too good at perl... well i'm not good at perl at all. can someone help me with inserting the new code please Smile.


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