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pbot/modules/nickometer.pl
2019-06-26 09:34:19 -07:00

243 lines
5.8 KiB
Perl
Executable File

#!/usr/bin/perl -w
#
# Lame-o-Nickometer backend
#
# (c) 1998 Adam Spiers <adam.spiers@new.ox.ac.uk>
#
# You may do whatever you want with this code, but give me credit.
#
# $Id: nickometer.pl,v 1.3 1999-02-20 04:19:10 tigger Exp $
#
use strict;
use Getopt::Std;
use Math::Trig;
use vars qw($VERSION $score $verbose);
$VERSION = '$Revision: 1.3 $'; # '
$VERSION =~ s/^.*?([\d.]+).*?$/$1/;
sub nickometer ($) {
local $_ = shift;
local $score = 0;
# Deal with special cases (precede with \ to prevent de-k3wlt0k)
my %special_cost = (
'_' => 50,
'69' => 500,
'dea?th' => 500,
'dark' => 400,
'n[i1]ght' => 300,
'n[i1]te' => 500,
'fuck' => 500,
'sh[i1]t' => 500,
'coo[l1]' => 500,
'kew[l1]' => 500,
'sw[a4]g' => 500,
'lame' => 500,
'dood' => 500,
'dude' => 500,
'[l1](oo?|u)[sz]er' => 500,
'[l1](ee|33)[t7]' => 500,
'e[l1]ite' => 500,
'[l1]ord' => 500,
's[e3]xy' => 700,
'h[o0]rny' => 700,
'pr[o0]n' => 1000,
'w[4a]r[e3]z' => 1000,
'xx' => 450,
);
foreach my $special (keys %special_cost) {
my $special_pattern = $special;
my $raw = ($special_pattern =~ s/^\\//);
my $nick = $_;
unless ($raw) {
$nick =~ tr/023457+8/ozeasttb/;
}
while ($nick =~ /$special_pattern/ig) {
&punish($special_cost{$special}, "matched special case /$special_pattern/")
}
}
if ($_ =~ m/^.$/) {
&punish(1000, "single letter nick");
}
while (m/[A-Z]([^A-Z]+)\b/g) {
&punish(250, "length 1 between capitals") if length $1 == 1;
}
# Allow Perl referencing
s/^\\([A-Za-z])/$1/;
# Keep me safe from Pudge ;-)
s/\^(pudge)/$1/i;
# C-- ain't so bad either
s/^C--$/C/;
# Punish consecutive non-alphas
s/([^A-Za-z0-9]{2,})
/my $consecutive = length($1);
&punish(&slow_pow(10, $consecutive),
"$consecutive total consecutive non-alphas")
if $consecutive;
$1
/egx;
# Remove balanced brackets and punish for unmatched
while (s/^([^()]*) (\() (.*) (\)) ([^()]*) $/$1$3$5/x ||
s/^([^{}]*) (\{) (.*) (\}) ([^{}]*) $/$1$3$5/x ||
s/^([^\[\]]*) (\[) (.*) (\]) ([^\[\]]*) $/$1$3$5/x)
{
print "Removed $2$4 outside parentheses; nick now $_\n" if $verbose;
}
my $parentheses = tr/(){}[]/(){}[]/;
&punish(&slow_pow(10, $parentheses),
"$parentheses unmatched " .
($parentheses == 1 ? 'parenthesis' : 'parentheses'))
if $parentheses;
# Punish k3wlt0k
my @k3wlt0k_weights = (5, 5, 2, 5, 2, 3, 1, 2, 2, 2);
for my $digit (0 .. 9) {
my $occurrences = s/$digit/$digit/g || 0;
&punish($k3wlt0k_weights[$digit] * $occurrences * 30,
$occurrences . ' ' .
(($occurrences == 1) ? 'occurrence' : 'occurrences') .
" of $digit")
if $occurrences;
}
# An alpha caps is not lame in middle or at end, provided the first
# alpha is caps.
my $orig_case = $_;
s/^([^A-Za-z]*[A-Z].*[a-z].*?)[_-]?([A-Z])/$1\l$2/;
# A caps first alpha is sometimes not lame
s/^([^A-Za-z]*)([A-Z])([a-z])/$1\l$2$3/;
# Punish uppercase to lowercase shifts and vice-versa, modulo
# exceptions above
my $case_shifts = &case_shifts($orig_case);
&punish(&slow_pow(5, $case_shifts),
$case_shifts . ' case ' .
(($case_shifts == 1) ? 'shift' : 'shifts'))
if ($case_shifts > 1 && /[A-Z]/);
# Punish lame endings (TorgoX, WraithX et al. might kill me for this :-)
&punish(50, 'last alpha lame') if $orig_case =~ /[XZ][^a-zA-Z]*$/;
# Punish letter to numeric shifts and vice-versa
my $number_shifts = &number_shifts($_);
&punish(&slow_pow(9, $number_shifts),
$number_shifts . ' letter/number ' .
(($number_shifts == 1) ? 'shift' : 'shifts'))
if $number_shifts > 1;
# Punish extraneous caps
my $caps = tr/A-Z/A-Z/;
&punish(&slow_pow(7, $caps), "$caps extraneous caps") if $caps;
# Now punish anything that's left
my $remains = $_;
$remains =~ tr/a-zA-Z0-9//d;
my $remains_length = length($remains);
&punish(150 * $remains_length + &slow_pow(9, $remains_length),
$remains_length . ' extraneous ' .
(($remains_length == 1) ? 'symbol' : 'symbols'))
if $remains;
print "\nRaw lameness score is $score\n" if $verbose;
# Use an appropriate function to map [0, +inf) to [0, 100)
my $percentage = 100 *
(1 + tanh(($score-400)/400)) *
(1 - 1/(1+$score/5)) / 2;
my $digits = 2 * (2 - &round_up(log(100 - $percentage) / log(10)));
return sprintf "%.${digits}f", $percentage;
}
sub case_shifts ($) {
# This is a neat trick suggested by freeside. Thanks freeside!
my $shifts = shift;
$shifts =~ tr/A-Za-z//cd;
$shifts =~ tr/A-Z/U/s;
$shifts =~ tr/a-z/l/s;
return length($shifts) - 1;
}
sub number_shifts ($) {
my $shifts = shift;
$shifts =~ tr/A-Za-z0-9//cd;
$shifts =~ tr/A-Za-z/l/s;
$shifts =~ tr/0-9/n/s;
return length($shifts) - 1;
}
sub slow_pow ($$) {
my ($x, $y) = @_;
return $x ** &slow_exponent($y);
}
sub slow_exponent ($) {
my $x = shift;
return 1.3 * $x * (1 - atan($x/6) *2/pi);
}
sub round_up ($) {
my $float = shift;
return int($float) + ((int($float) == $float) ? 0 : 1);
}
sub punish ($$) {
my ($damage, $reason) = @_;
return unless $damage;
$score += $damage;
print "$damage lameness points awarded: $reason\n" if $verbose;
}
my $nick = $ARGV[0];
if ($nick =~ s/ verbose$//) {
$verbose = 1;
}
if ($ARGV[1] and $ARGV[1] eq 'verbose') {
$verbose = 1;
}
if (not defined $nick) {
print "Usage: nickometer <nick>\n";
exit 1;
}
if ($nick =~ m/pragma/) {
print "$nick is a really awesome nick!";
exit 0;
}
my $percentage = nickometer($nick);
if ($percentage > 0) {
print "$nick is $percentage% lame.\n";
} else {
print "$nick isn't lame.\n";
}