#!/usr/bin/perl -wT
#
# Copyright (c) 2007, 2010  Peter Pentchev
# All rights reserved.
#
# Redistribution and use in source and binary forms, with or without
# modification, are permitted provided that the following conditions
# are met:
# 1. Redistributions of source code must retain the above copyright
#    notice, this list of conditions and the following disclaimer.
# 2. Redistributions in binary form must reproduce the above copyright
#    notice, this list of conditions and the following disclaimer in the
#    documentation and/or other materials provided with the distribution.
#
# THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
# ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
# IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
# ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
# FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
# DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
# OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
# HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
# LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
# OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
# SUCH DAMAGE.
#
# $Ringlet: textproc/trivsplitmail/trunk/trivsplitmail/trivsplitmail.pl 4436 2010-02-02 14:00:00Z roam $
#
# This is a trivial thing not to be used in any shape or form! :)

use strict;

MAIN:
{
	my ($n, $fname, $file, $line);

	$n = 0;
	while (<>) {
		if (/^Return-Path:/) {
			close $file if $file;
			$n++;
			$fname = sprintf 'mail_%05d.txt', $n;
			open($file, '>', $fname) or
			    die("Opening $fname: $!\n");
		}
		die("Invalid input file, must start with a Return-Path line\n")
		    unless $file;
		print $file $_;
	}
	close $file if $file;
}