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#!/usr/bin/perl
use strict;
use warnings;
package CollectBrakets;
sub main
{
my ($filename, $foutname) = @_;
open(FILE, "<", $filename) or die "$0: Cannot open $filename : $!\n";
if (!open(FOUT, ">", $foutname)) {
close(FILE);
die "$0: Cannot write to $foutname : $!\n";
}
while (<FILE>) {
next if (/^#/);
my $line = $_;
chomp;
my @temp = split;
my $n = scalar(@temp);
next if ($n != 5);
next unless isBraket($temp[3]);
print FOUT almostZeroToZero($line);
}
close(FOUT);
close(FILE);
}
sub almostZeroToZero
{
my ($x) = @_;
$_ = $x;
my $hasEol = 0;
if (substr($x, -1) eq "\n") {
$hasEol = 1;
} else {
$_ = $x;
}
my @temp = split;
my $ret = "";
my $n = scalar(@temp);
for (my $i = 0; $i < $n; ++$i) {
$ret .= almost0To0($temp[$i])." ";
}
return ($hasEol) ? $ret."\n" : $ret;
}
sub almost0To0
{
my ($x) = @_;
return $x if (!isFloat($x));
return (abs($x) < 1e-6) ? "0" : $x;
}
sub isFloat
{
my ($x) = @_;
$_ = $x;
return (/^[+-]?(?=\.?\d)\d*\.?\d*(?:e[+-]?\d+)?\z/i);
}
sub isBraket
{
my ($x) = @_;
my ($bra, $ket);
if ($x =~ /^\<(.+)\|.+\|(.+)\>$/) {
$bra = $1;
$ket = $2;
} elsif ($x =~ /^\<(.+)\|(.+)\>$/) {
$bra = $1;
$ket = $2;
} else {
return 0;
}
(defined($bra) and defined($ket)) or return 0;
return (isState($bra) and isState($ket));
}
sub isState
{
my ($s) = @_;
return ($s eq "gs" or $s =~ /^P\d+/);
}
1;
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