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|
#-*- perl -*-
#
# Copyright (C) 2001 Ken'ichi Fukamachi
# All rights reserved. This program is free software; you can
# redistribute it and/or modify it under the same terms as Perl itself.
#
# $Id$
# $FML$
#
package MailingList::Messages;
use strict;
use vars qw(@ISA @EXPORT @EXPORT_OK);
use Carp;
require Exporter;
@ISA = qw(Exporter);
sub new
{
my ($self, $args) = @_;
my ($type) = ref($self) || $self;
my $me = {};
if ($args) { create($me, $args);}
return bless $me, $type;
}
######################################################################
=head1 NAME
MailingList::Messages -- message manipulators
=head1 SYNOPSIS
my $m1 = new MailingList::Messages { content => \$body1 };
my $m2 = new MailingList::Messages;
$m2->create( { content => \$body2 });
# make a chain of $m1, $m2, ...
$m1->chain( $m2 );
# print the contents in the order: $m1, $m2, ...
$m1->print;
=head1 DESCRIPTION
A message has the content and a header including the next message
pointer, et. al. Out idea is similar to IPv6.
Message Format
%message = {
version => 1.0
content_type => message/rfc822
next => \%next_message
prev => \%prev_message
header => {
field_name => field_value
}
content => \$message_body
}
=item Function()
=cut
sub create
{
my ($self, $args) = @_;
$self->{ version } = $args->{ version } || 1.0;
$self->{ type } = $args->{ type } || 'message/rfc822';
$self->{ next } = $args->{ next } || undef;
$self->{ prev } = $args->{ prev } || undef;
$self->{ header } = $args->{ header } || undef;
$self->{ content } = $args->{ content } || '';
}
sub next_chain
{
my ($self, $ref_next_message) = @_;
$self->{ next } = $ref_next_message;
}
sub prev_chain
{
my ($self, $ref_prev_message) = @_;
$self->{ prev } = $ref_prev_message;
}
sub print
{
my ($self, $fd) = @_;
my $msg = $self;
# if $fd is not given, we use STDOUT.
unless (defined $fd) { $fd = \*STDOUT;}
MSG:
while (1) {
$self->_print($fd, $msg->{ content });
last MSG unless $msg->{ next };
$msg = $self->{ next };
}
}
# Descriptions: send the body part of the message to socket
# replace "\n" in the end of line with "\r\n" on memory.
# We should do it to use as less memory as possible.
# So we use substr() to process each line.
# Arguments: $self $socket $ref_to_body
# Side Effects: none
# Return Value: none
sub _print
{
my ($self, $fd, $r_body) = @_;
my $pp = 0;
my $maxlen = length($$r_body);
my $logfp = $self->{ _log_function };
$logfp = ref($logfp) eq 'CODE' ? $logfp : undef;
# write each line in buffer
my ($p, $len, $buf, $pbuf);
SMTP_IO:
while (1) {
$p = index($$r_body, "\n", $pp);
$len = $p - $pp + 1;
$buf = substr($$r_body, $pp, ($p < 0 ? $maxlen-$pp : $len));
if ($buf !~ /\r\n$/) { $buf =~ s/\n$/\r\n/;}
# ^. -> ..
$buf =~ s/^\./../;
print $fd $buf;
&$logfp($buf) if $logfp;
last SMTP_IO if $p < 0;
$pp = $p + 1;
}
}
sub size
{
my ($self) = @_;
my $c = $self->{ content };
length($$c);
}
sub is_empty
{
my ($self) = @_;
my $size = $self->size;
my $c = $self->{ content };
if ($size == 0) { return 1;}
if ($size <= 8) {
if ($$c =~ /^\s*$/) { return 1;}
}
# false
return 0;
}
sub set_log_function
{
my ($self, $fp) = @_;
$self->{ _log_function } = $fp; # log function pointer
}
######################################################################
=head1 AUTHOR
Ken'ichi Fukamachi
=head1 COPYRIGHT
Copyright (C) 2001 Ken'ichi Fukamachi
All rights reserved. This program is free software; you can
redistribute it and/or modify it under the same terms as Perl itself.
=head1 HISTORY
MailingList::Messages.pm appeared in fml5.
=cut
1;
|
