#!/usr/bin/perl
# Splits a concatenated set of Stockholm Files into several individual files.

use strict;
use FileHandle;
my $ac;
my $lns="";
my $fh;
while (<>) {
    if ($_=~m!^//!) {
	$fh->print("//\n");
	$fh->close();
	$ac = undef;
	$lns = "";
    } else {
	if ($_=~/GF\s+AC\s+([0-9.RPF]+)/) { 
	    $ac=$1; 
	    ($fh=new FileHandle)->open(">$ac.stk") or die("Couldn't open file '$ac.stk'"); 
	    $lns=~/^. STOCKHOLM 1.0/ or $fh->print("# STOCKHOLM 1.0\n");
	};
	if (defined($fh)) {
	    if (defined $lns) { 
		$fh->print($lns); $lns=undef; }
	    
	    $fh->print($_);
	} else {
	    $lns .= $_;
	}
    }
}