#!/usr/bin/perl -w

# Copyright 2005 David Hilvert <dhilvert@auricle.dyndns.org>,
#                              <dhilvert@ugcs.caltech.edu>

#  This file is part of the Anti-Lamenessing Engine.
#
#  The Anti-Lamenessing Engine is free software; you can redistribute it and/or modify
#  it under the terms of the GNU General Public License as published by
#  the Free Software Foundation; either version 3 of the License, or
#  (at your option) any later version.
#
#  The Anti-Lamenessing Engine is distributed in the hope that it will be useful,
#  but WITHOUT ANY WARRANTY; without even the implied warranty of
#  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
#  GNU General Public License for more details.
#
#  You should have received a copy of the GNU General Public License
#  along with Anti-Lamenessing Engine; if not, write to the Free Software
#  Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA

#
# Script to merge ALE cpf files.  Assumes that the first columns of all files
# refer to points in the first frame in the sequence.  These are written as the
# first column in the output, followed by the first file's columns, and then
# the second file's columns, etc.
#

print "V 0\n";

$data_count = 0;

foreach (@ARGV) {
	@file_lines = `cat $_`;

	$first_data_line = 1;
	$old_data_count = $data_count;

	%used_keys = ();

	foreach (@file_lines) {
		/^A (\d+ \d+) (.*)$/ or next;

		$key = $1;
		$data = $2;

		if ($first_data_line) {
			$data_copy = $data;
			while ($data_copy =~ s/^\d+ \d+(.*)$/$1/) {
				$data_count++;
			}
			$first_data_line = 0;
		}

		next if ($used_keys{$key});

		if (!defined($points{$key})) {
			$points{$key} = " nan nan" x $old_data_count;
		}

		$points{$key} .= " $data";
		$used_keys{$key} = 1;
	}

	foreach $key (keys %points) {
		if (!defined($used_keys{$key})) {
			$points{$key} .= " nan nan";
		}
	}
}

foreach $key (keys %points) {
	print "A $key" . "$points{$key}\n";
}
