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#-*- perl -*-
#
# Copyright (C) 2001,2002,2003,2004,2005 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.
#
# $FML: Subject.pm,v 1.18 2005/08/20 01:25:15 fukachan Exp $
#
### ###
### CAUTION: THE CHARSET OF THIS FILE IS "EUC-JAPAN". ###
### ###
package Mail::Message::Language::Japanese::Subject;
use strict;
use vars qw(@ISA @EXPORT @EXPORT_OK);
use Carp;
use Jcode;
=head1 NAME
Mail::Message::Language::Japanese::Subject - functions for Japanese subject.
=head1 SYNOPSIS
use Mail::Message::Language::Japanese::Subject;
$is_reply = Mail::Message::Language::Japanese::Subject::is_reply($subject);
=head1 DESCRIPTION
a collection to handle Japanese specific representations which appears
in the subject.
=cut
# XXX-TODO: we should it in proper way in the future.
# XXX-TODO: but we import it anyway for further rewriting.
my $CUT_OFF_RERERE_PATTERN = '';
my $CUT_OFF_RERERE_HOOK = '';
# subjec reply pattern
# apply patch from OGAWA Kunihiko <kuni@edit.ne.jp>
# fml-support:7626 7653 07666
# Re: Re2: Re[2]: Re(2): Re^2: Re*2:
# i-mode ? (PR fml-help: 00157 by OGAWA Kunihiko)
my $pattern = 'Re:|Re\d+:|Re\[\d+\]:|Re\(\d+\):|Re\^\d+:|Re\*\d+:|Re>';
$pattern .= '|(�ֿ�|��|�ң�|�ң�)(\s*:|��)';
=head1 METHODS
=cut
# Descriptions: constructor.
# Arguments: OBJ($self) HASH_REF($args)
# Side Effects: none
# Return Value: OBJ
sub new
{
my ($self, $args) = @_;
my ($type) = ref($self) || $self;
my $me = {};
return bless $me, $type;
}
=head2 is_reply($string)
check whether C<$string> looks like a reply message.
C<$string> is a C<Subject:> of the mail header.
For example, it is like this:
Re: reply to your messages
=cut
# Descriptions: looks reply message ?
# Arguments: OBJ($self) STR($x)
# Side Effects: none
# Return Value: 1 or 0
sub is_reply
{
my ($self, $x) = @_;
return 0 unless $x;
&Jcode::convert(\$x, 'euc');
return ($x =~ /^((\s|(��))*($pattern)\s*)+/ ? 1 : 0);
}
=head2 cutoff_reply_tag($subject)
cut off C<Re:> in the string C<$subject> like C<Re: ... >
within C<Subject:>.
=cut
# fml-support: 07507
# sub CutOffRe
# {
# ���ޤޤǤɤ���� Re: �Ȥ��ȤäѤ餦
#
# if ($LANGUAGE eq 'Japanese') {
# ���ܸ������¸�饤�֥�������
# ������� $CUT_OFF_PATTERN (config.ph)�ʤɤˤ������ä�
# �ڤ���Ȥ��Τ��ɤ��ʤ��ä����ܸ��������Ȥ��⤦�櫓��
# �ǡ����Υ饤�֥�����Ǽ¹Ԥ����
# }
#
# run-hooks $CUT_OFF_HOOK(�桼�����HOOK)
#}
# �����к�
# Descriptions: remove Re: strings.
# Arguments: OBJ($self) STR($subject)
# Side Effects: none
# Return Value: STR
sub cutoff_reply_tag
{
my ($self, $subject) = @_;
my ($y, $limit);
Jcode::convert(\$subject, 'euc');
if ($CUT_OFF_RERERE_PATTERN) {
Jcode::convert(\$CUT_OFF_RERERE_PATTERN, 'euc');
}
$pattern .= '|' . $CUT_OFF_RERERE_PATTERN if ($CUT_OFF_RERERE_PATTERN);
# fixed by OGAWA Kunihiko <kuni@edit.ne.jp> (fml-support: 07815)
# $subject =~ s/^((\s*|(��)*)*($pattern)\s*)+/Re: /oi;
$subject =~ s/^((\s|(��))*($pattern)\s*)+/Re: /oi;
if ($CUT_OFF_RERERE_HOOK) {
eval($CUT_OFF_RERERE_HOOK);
&Log($@) if $@;
}
Jcode::convert(\$subject, 'jis');
$subject;
}
=head1 CODING STYLE
See C<http://www.fml.org/software/FNF/> on fml coding style guide.
=head1 AUTHOR
Ken'ichi Fukamachi
=head1 COPYRIGHT
Copyright (C) 2001,2002,2003,2004,2005 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
Mail::Message::Language::Japanese::Subject
first appeared in fml8 mailing list driver package.
See C<http://www.fml.org/> for more details.
=cut
1;
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