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#!/usr/bin/perl -w
use strict;
use Getopt::Std;
# usage ./same-opening.pl [-d] -n 15 -m 3 *.csa
# -d ή
# -n ܤޤĴ٤뤫
# -m ϤǾ
my %opts=();
getopts("dm:n:",\%opts);
my $dag = $opts{d};
my $num_moves = $opts{n} ? $opts{n} : 3;
my $minimum = $opts{m} ? $opts{m} : 0;
my %data;
sub parse ($$) {
my ($file, $num) = @_;
open FILE, $file
|| die "open $! $file";
my @moves;
while (<FILE>) {
next
unless (/^([+-][0-9]{4}[A-Z]{2})/);
push(@moves, $1);
last
if (@moves+0 >= $num);
}
close FILE;
my $key = join(',', ($dag ? (sort @moves) : @moves));
if (defined $data{$key}) {
$data{$key}++;
} else {
$data{$key} = 1;
}
}
foreach my $file (@ARGV) {
parse($file, $num_moves);
}
my %reverse;
foreach my $key (keys %data) {
my $frequency = $data{$key};
if (defined $reverse{$frequency}) {
push (@{$reverse{$frequency}}, $key);
} else {
$reverse{$frequency} = [$key];
}
}
foreach my $freq (sort {$b <=> $a} keys %reverse) {
last
if ($freq < $minimum);
foreach my $state (@{$reverse{$freq}}) {
print $freq . "\t" . $state . "\n";
}
}
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