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pbot/misc/spinach/dedup.pl

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Perl
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#!/usr/bin/perl
use strict;
use warnings;
use utf8;
use Data::Dumper;
use Time::HiRes qw(gettimeofday);
use Text::Fuzzy;
open my $handle, '<questions' or die $@;
chomp(my @lines = <$handle>); close $handle;
my @lc;
# Normalize blanks
for my $i (0 .. $#lines) {
$lines[$i] =~ s/(---+|__+|\.\.\.\.+)/_____/g;
$lc[$i] = lc $lines[$i];
$lc[$i] =~ s/^(.*): //
}
my $max_distance = 4;
my %remove;
for my $i (0 .. $#lines) {
print STDERR "$i\n";
next if exists $remove{$i};
my $tf = Text::Fuzzy->new($lc[$i]);
$tf->set_max_distance($max_distance);
my $length_a = length $lines[$i];
for my $j ($i .. $#lines) {
next if $i == $j;
next if exists $remove{$j};
my $distance = $tf->distance($lc[$j]);
next if $distance > $max_distance;
print STDERR "distance: $distance for\n\t$lines[$i] ($i)\n\t$lines[$j] ($j)\n";
my $length_b = length $lines[$j];
if ($length_a > $length_b) {
$remove{$j} = 1;
print STDERR "keeping $lines[$i] ($i)\n";
} else {
$remove{$i} = 1;
print STDERR "keeping $lines[$j] ($j)\n";
}
}
}
for my $i (0 .. $#lines) {
next if exists $remove{$i};
print "$lines[$i]\n";
}