Message/Field/Address.pm


=head1 NAME

Message::Field::Address Perl module

=head1 DESCRIPTION

Perl module for RFC 822/2822 address related C<field>s.

=cut

package Message::Field::Address;
require 5.6.0;
use strict;
use re 'eval';
use vars qw(%REG $VERSION);
$VERSION = '1.00';

use overload '@{}' => sub {shift->{address}},
             '""' => sub {shift->stringify};

$REG{comment} = qr/\x28(?:\x5C[\x00-\xFF]|[\x00-\x0C\x0E-\x27\x2A-\x5B\x5D-\xFF]+|(??{$REG{comment}}))*\x29/;
$REG{quoted_string} = qr/\x22(?:\x5C[\x00-\xFF]|[\x00-\x0C\x0E-\x21\x23-\x5B\x5D-\xFF])*\x22/;
$REG{domain_literal} = qr/\x5B(?:\x5C[\x00-\xFF]|[\x00-\x0C\x0E-\x5A\x5E-\xFF])*\x5D/;

$REG{WSP} = qr/[\x20\x09]+/;
$REG{FWS} = qr/[\x20\x09]*/;
$REG{atext} = qr/[\x21\x23-\x27\x2A\x2B\x2D\x2F\x30-\x39\x3D\x3F\x41-\x5A\x5E-\x7E]+/;
$REG{dot_atom} = qr/$REG{atext}(?:$REG{FWS}\x2E$REG{FWS}$REG{atext})*/;
$REG{dot_word} = qr/(?:$REG{atext}|$REG{quoted_string})(?:$REG{FWS}\x2E$REG{FWS}(?:$REG{atext}|$REG{quoted_string}))*/;
$REG{phrase} = qr/(?:$REG{atext}|$REG{quoted_string})(?:$REG{atext}|$REG{quoted_string}|\.|$REG{FWS})*/;
$REG{obs_route} = qr/(?:\x40$REG{FWS}(?:$REG{dot_word}|$REG{domain_literal})(?:$REG{FWS},?$REG{FWS}\x40$REG{FWS}(?:$REG{dot_word}|$REG{domain_literal}))*):/;
$REG{addr_spec} = qr/$REG{dot_word}$REG{FWS}\x40$REG{FWS}(?:$REG{dot_atom}|$REG{domain_literal})/;
$REG{mailbox} = qr/(?:(?:$REG{phrase})?<$REG{FWS}(?:$REG{obs_route})?$REG{FWS}$REG{addr_spec}$REG{FWS}>|$REG{addr_spec})/;
$REG{mailbox_list} = qr/$REG{mailbox}(?:$REG{FWS},(?:$REG{FWS}$REG{mailbox})?)*/;
$REG{address} = qr/(?:(?:$REG{phrase})?(?:<$REG{FWS}(?:$REG{obs_route})?$REG{FWS}$REG{addr_spec}$REG{FWS}>|:$REG{FWS}(?:$REG{mailbox_list}$REG{FWS})?;)|$REG{addr_spec})/;
$REG{address_list} = qr/$REG{address}(?:$REG{FWS},(?:$REG{FWS}$REG{address})?)*/;
$REG{M_group} = qr/($REG{phrase}):/;
$REG{M_mailbox} = qr/(?:($REG{phrase})?<$REG{FWS}($REG{obs_route})?$REG{FWS}($REG{addr_spec})$REG{FWS}>|($REG{addr_spec}))/;
$REG{M_quoted_string} = qr/\x22((?:\x5C[\x00-\xFF]|[\x00-\x0C\x0E-\x21\x23-\x5B\x5D-\xFF])*)\x22/;

$REG{NON_atom} = qr/[^\x09\x20\x21\x23-\x27\x2A\x2B\x2D\x2F\x30-\x39\x3D\x3F\x41-\x5A\x5E-\x7E]/;

=head2 Message::Field::Address->new ()

Return empty address object.

=cut

sub new ($) {
  bless {type => '_ROOT'}, shift;
}

=head2 Message::Field::Address->parse ($unfolded_field_body)

Parse structured C<field-body> contain of C<address-list>.

=cut

sub parse ($$) {
  my $self = bless {}, shift;
  my $field_body = shift;
  $field_body = $self->delete_comment ($field_body);
  my %addr = $self->parse_address_list ($field_body);
  $self->{address} = $addr{address};
  $self->{type}    = $addr{type};
  $self;
}

=head2 $self->address ()

Return address list in the format described in
L<$self-E<gt>parse_address_list ()>.

=cut

sub address ($) {@{shift->{address}}}

=head2 $self->add ($addr_spec, [%option])

Add an mail address to C<$self> (address object).
%option = (name => C<display-name>, route => C<route>, 
           group => C<display-name> of C<group>)

Note that this method (and other methods) does not check
$addr_spec and $option{route} is valid or not.

=cut

sub add ($$;%) {
  my $self = shift;
  my ($addr, %option) = @_;
  my $name = $option{name} || $option{display_name};
  unless ($option{group}) {
    push @{$self->{address}}, {type => 'mailbox',
         addr_spec => $addr, display_name => $name, route => $option{route}};
  } else {
    for my $i (@{$self->{address}}) {
      if ($i->{type} eq 'group' && $i->{display_name} eq $option{group}) {
        push @{$i->{address}}, {type => 'mailbox',
             addr_spec => $addr, display_name => $name, route => $option{route}};
        return $self;
      }
    }
    push @{$self->{address}}, {type => 'group', display_name => $option{group},
         address => [
           {type => 'mailbox',
            addr_spec => $addr, display_name => $name, route => $option{route}}
         ]};
  }
  $self;
}

sub stringify ($) {
  my $self = shift;
  my @return;
  for my $address (@{$self->{address}}) {
    my $return = '';
    next if !$address->{addr_spec} && $address->{type} ne 'group';
    if ($address->{display_name}) {
      $return = $self->quote_unsafe_string ($address->{display_name})
        .($address->{type} eq 'group'? ': ': ' ');
    }
    if ($address->{type} ne 'group') {
      $return .= '<'.$address->{route}.$address->{addr_spec}.'>';
    } else {
      my (@g_return);
      for my $mailbox (@{$address->{address}}) {
        next unless $mailbox->{addr_spec};
        my $g_return = '';
        $g_return = $self->quote_unsafe_string ($mailbox->{display_name}) .' '
          if $mailbox->{display_name};
        $g_return .= '<'.$mailbox->{route}.$mailbox->{addr_spec}.'>';
        push @g_return, $g_return;
      }
      $return .= join ', ', @g_return;
      $return .= ';' if $address->{type} eq 'group';
    }
    push @return, $return;
  }
  join ', ', @return;
}

sub quote_unsafe_string ($$) {
  my $self = shift;
  my $string = shift;
  if ($string =~ /$REG{NON_atom}/ || $string =~ /$REG{WSP}$REG{WSP}+/) {
    $string =~ s/([\x22\x5C])/\x5C$1/g;
    $string = '"'.$string.'"';
  }
  $string;
}

=head2 $self->unquote_quoted_string ($string)

Unquote C<quoted-string>.  Get rid of C<DQUOTE>s and
C<REVERSED SOLIDUS> included in C<quoted-pair>.
This method is intended for internal use.

=cut

sub unquote_quoted_string ($$) {
  my $self = shift;
  my $quoted_string = shift;
  $quoted_string =~ s{$REG{M_quoted_string}}{
    my $qtext = $1;
    $qtext =~ s/\x5C([\x00-\xFF])/$1/g;
    $qtext;
  }goex;
  $quoted_string;
}

=head2 $self->parse_mailbox ($mailbox)

Parse C<mailbox> and return array of C<addr-spec>,
C<display-name> and C<route> (aka C<obs-route> of RFC 2822).
This method is intended for internal use.

=cut

sub parse_mailbox ($$) {
  my $self = shift;
  my $mailbox = shift;
  if ($mailbox =~ /$REG{M_mailbox}/) {
    my ($display_name, $route, $addr_spec) = ($1, $2, $3 || $4);
    $display_name =~ s/$REG{WSP}+$//;
    $display_name = $self->unquote_quoted_string ($display_name);
    $addr_spec =~ s{($REG{quoted_string}|$REG{domain_literal})|$REG{WSP}}{$1}go;
    $route =~ s{($REG{quoted_string}|$REG{domain_literal})|$REG{WSP}}{$1}go;
    return ($addr_spec, $display_name, $route);
  }
}

=head2 $self->parse_address_list ($address_list)

Parse C<address-list> and return hash.
This method is intended for internal use.

=head3 Structure of hash returned by parse_address_list

%address = (

  type  => '_ROOT',
  address       => [
  
    ## mailbox
    {
      type      => 'mailbox',
      display_name      => 'Foo H. Bar',
      addr_spec => 'foo@bar.example',
      route     => '@hoge.example:',
    },
    
    ## group
    {
      type      => 'group',
      display_name      => 'The committee',
      address   => [
        
        ## mailbox
        {
          type  => 'mailbox',
          display_name  => 'Tom (Director)',
          addr_spec     => 'tom@committee.example',
          route => '',
        }
        
      ],
    },
  
  ],

);

=cut

sub parse_address_list ($$) {
  my $self = shift;
  my $address_list = shift;
  my %r_addr = (type => '_ROOT');
  $address_list =~ s{($REG{address})}{
    my $address = $1;
    if ($address =~ /^$REG{M_group}/) {
      my %r_group = (type => 'group', display_name => $1);
      $r_group{display_name} =~ s/$REG{WSP}+$//;
      $r_group{display_name} = $self->unquote_quoted_string ($r_group{display_name});
      $address =~ s{($REG{mailbox})}{
        my ($addr, $name, $route) = $self->parse_mailbox ($1);
        push @{$r_group{address}}, {type => 'mailbox',
           display_name => $name, route => $route, addr_spec => $addr};
      }goex;
      push @{$r_addr{address}}, \%r_group;
    } else {
      my ($addr, $name, $route) = $self->parse_mailbox ($address);
      push @{$r_addr{address}}, {type => 'mailbox',
           display_name => $name, route => $route, addr_spec => $addr};
    }
  }goex;
  %r_addr;
}

=head2 $self->delete_comment ($field_body)

Remove all C<comment> in given strictured C<field-body>.
This method is intended for internal use.

=cut

sub delete_comment ($$) {
  my $self = shift;
  my $body = shift;
  $body =~ s{($REG{quoted_string}|$REG{domain_literal})|$REG{comment}}{
    my $o = $1;  $o? $o : ' ';
  }gex;
  $body;
}

=head1 EXAMPLE

  ## Compose field-body for To: field.
  
  use Message::Field::Address;
  my $addr = new Message::Field::Address;
  $addr->add ('foo@example.org', name => 'Mr. foo bar');
  $addr->add ('webmaster@example.org', group => 'administrators');
  $addr->add ('postmaster@example.org', group => 'administrators');
  
  my $field_body = $addr->stringify ();


  ## Output parsed address-list tree.
  
  use Message::Field::Address;
  my $addr = Message::Field::Address->parse ($field_body);
  
  for my $i (@$addr) {
    if ($i->{type} eq 'group') {
      print "\x40 $i->{display_name}: \n";
      for my $j (@{$i->{address}}) {
        print "\t- $j->{display_name} <$j->{route}$j->{addr_spec}>\n";
      }
    } else {
      print "- $i->{display_name} <$i->{route}$i->{addr_spec}>\n";
    }
  }

=head1 LICENSE

Copyright 2002 wakaba E<lt>w@suika.fam.cxE<gt>.

This program 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 2 of the License, or
(at your option) any later version.

This program 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 this program; see the file COPYING.  If not, write to
the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
Boston, MA 02111-1307, USA.

=head1 CHANGE

See F<ChangeLog>.
$Date: $

=cut

1;
1	wakaba	1.1
2			=head1 NAME
3
4			Message::Field::Address Perl module
5
6			=head1 DESCRIPTION
7
8			Perl module for RFC 822/2822 address related C<field>s.
9
10			=cut
11
12			package Message::Field::Address;
13			require 5.6.0;
14			use strict;
15			use re 'eval';
16			use vars qw(%REG $VERSION);
17			$VERSION = '1.00';
18
19	wakaba	1.2	use overload '@{}' => sub {shift->{address}},
20			'""' => sub {shift->stringify};
21	wakaba	1.1
22			$REG{comment} = qr/\x28(?:\x5C[\x00-\xFF]\|[\x00-\x0C\x0E-\x27\x2A-\x5B\x5D-\xFF]+\|(??{$REG{comment}}))*\x29/;
23			$REG{quoted_string} = qr/\x22(?:\x5C[\x00-\xFF]\|[\x00-\x0C\x0E-\x21\x23-\x5B\x5D-\xFF])*\x22/;
24			$REG{domain_literal} = qr/\x5B(?:\x5C[\x00-\xFF]\|[\x00-\x0C\x0E-\x5A\x5E-\xFF])*\x5D/;
25
26			$REG{WSP} = qr/[\x20\x09]+/;
27			$REG{FWS} = qr/[\x20\x09]*/;
28			$REG{atext} = qr/[\x21\x23-\x27\x2A\x2B\x2D\x2F\x30-\x39\x3D\x3F\x41-\x5A\x5E-\x7E]+/;
29			$REG{dot_atom} = qr/$REG{atext}(?:$REG{FWS}\x2E$REG{FWS}$REG{atext})*/;
30			$REG{dot_word} = qr/(?:$REG{atext}\|$REG{quoted_string})(?:$REG{FWS}\x2E$REG{FWS}(?:$REG{atext}\|$REG{quoted_string}))*/;
31			$REG{phrase} = qr/(?:$REG{atext}\|$REG{quoted_string})(?:$REG{atext}\|$REG{quoted_string}\|\.\|$REG{FWS})*/;
32			$REG{obs_route} = qr/(?:\x40$REG{FWS}(?:$REG{dot_word}\|$REG{domain_literal})(?:$REG{FWS},?$REG{FWS}\x40$REG{FWS}(?:$REG{dot_word}\|$REG{domain_literal}))*):/;
33			$REG{addr_spec} = qr/$REG{dot_word}$REG{FWS}\x40$REG{FWS}(?:$REG{dot_atom}\|$REG{domain_literal})/;
34			$REG{mailbox} = qr/(?:(?:$REG{phrase})?<$REG{FWS}(?:$REG{obs_route})?$REG{FWS}$REG{addr_spec}$REG{FWS}>\|$REG{addr_spec})/;
35			$REG{mailbox_list} = qr/$REG{mailbox}(?:$REG{FWS},(?:$REG{FWS}$REG{mailbox})?)*/;
36			$REG{address} = qr/(?:(?:$REG{phrase})?(?:<$REG{FWS}(?:$REG{obs_route})?$REG{FWS}$REG{addr_spec}$REG{FWS}>\|:$REG{FWS}(?:$REG{mailbox_list}$REG{FWS})?;)\|$REG{addr_spec})/;
37			$REG{address_list} = qr/$REG{address}(?:$REG{FWS},(?:$REG{FWS}$REG{address})?)*/;
38			$REG{M_group} = qr/($REG{phrase}):/;
39			$REG{M_mailbox} = qr/(?:($REG{phrase})?<$REG{FWS}($REG{obs_route})?$REG{FWS}($REG{addr_spec})$REG{FWS}>\|($REG{addr_spec}))/;
40			$REG{M_quoted_string} = qr/\x22((?:\x5C[\x00-\xFF]\|[\x00-\x0C\x0E-\x21\x23-\x5B\x5D-\xFF])*)\x22/;
41
42			$REG{NON_atom} = qr/[^\x09\x20\x21\x23-\x27\x2A\x2B\x2D\x2F\x30-\x39\x3D\x3F\x41-\x5A\x5E-\x7E]/;
43
44	wakaba	1.2	=head2 Message::Field::Address->new ()
45	wakaba	1.1
46			Return empty address object.
47
48			=cut
49
50			sub new ($) {
51			bless {type => '_ROOT'}, shift;
52			}
53
54	wakaba	1.2	=head2 Message::Field::Address->parse ($unfolded_field_body)
55	wakaba	1.1
56			Parse structured C<field-body> contain of C<address-list>.
57
58			=cut
59
60			sub parse ($$) {
61			my $self = bless {}, shift;
62			my $field_body = shift;
63			$field_body = $self->delete_comment ($field_body);
64			my %addr = $self->parse_address_list ($field_body);
65			$self->{address} = $addr{address};
66			$self->{type} = $addr{type};
67			$self;
68			}
69
70			=head2 $self->address ()
71
72			Return address list in the format described in
73			L<$self-E<gt>parse_address_list ()>.
74
75			=cut
76
77			sub address ($) {@{shift->{address}}}
78
79			=head2 $self->add ($addr_spec, [%option])
80
81			Add an mail address to C<$self> (address object).
82			%option = (name => C<display-name>, route => C<route>,
83			group => C<display-name> of C<group>)
84
85			Note that this method (and other methods) does not check
86			$addr_spec and $option{route} is valid or not.
87
88			=cut
89
90			sub add ($$;%) {
91			my $self = shift;
92			my ($addr, %option) = @_;
93			my $name = $option{name} \|\| $option{display_name};
94			unless ($option{group}) {
95			push @{$self->{address}}, {type => 'mailbox',
96			addr_spec => $addr, display_name => $name, route => $option{route}};
97			} else {
98			for my $i (@{$self->{address}}) {
99			if ($i->{type} eq 'group' && $i->{display_name} eq $option{group}) {
100			push @{$i->{address}}, {type => 'mailbox',
101			addr_spec => $addr, display_name => $name, route => $option{route}};
102			return $self;
103			}
104			}
105			push @{$self->{address}}, {type => 'group', display_name => $option{group},
106			address => [
107			{type => 'mailbox',
108			addr_spec => $addr, display_name => $name, route => $option{route}}
109			]};
110			}
111			$self;
112			}
113
114			sub stringify ($) {
115			my $self = shift;
116			my @return;
117			for my $address (@{$self->{address}}) {
118			my $return = '';
119			next if !$address->{addr_spec} && $address->{type} ne 'group';
120			if ($address->{display_name}) {
121			$return = $self->quote_unsafe_string ($address->{display_name})
122			.($address->{type} eq 'group'? ': ': ' ');
123			}
124			if ($address->{type} ne 'group') {
125			$return .= '<'.$address->{route}.$address->{addr_spec}.'>';
126			} else {
127			my (@g_return);
128			for my $mailbox (@{$address->{address}}) {
129			next unless $mailbox->{addr_spec};
130			my $g_return = '';
131			$g_return = $self->quote_unsafe_string ($mailbox->{display_name}) .' '
132			if $mailbox->{display_name};
133			$g_return .= '<'.$mailbox->{route}.$mailbox->{addr_spec}.'>';
134			push @g_return, $g_return;
135			}
136			$return .= join ', ', @g_return;
137			$return .= ';' if $address->{type} eq 'group';
138			}
139			push @return, $return;
140			}
141			join ', ', @return;
142			}
143
144			sub quote_unsafe_string ($$) {
145			my $self = shift;
146			my $string = shift;
147			if ($string =~ /$REG{NON_atom}/ \|\| $string =~ /$REG{WSP}$REG{WSP}+/) {
148			$string =~ s/([\x22\x5C])/\x5C$1/g;
149			$string = '"'.$string.'"';
150			}
151			$string;
152			}
153
154			=head2 $self->unquote_quoted_string ($string)
155
156			Unquote C<quoted-string>. Get rid of C<DQUOTE>s and
157			C<REVERSED SOLIDUS> included in C<quoted-pair>.
158			This method is intended for internal use.
159
160			=cut
161
162			sub unquote_quoted_string ($$) {
163			my $self = shift;
164			my $quoted_string = shift;
165			$quoted_string =~ s{$REG{M_quoted_string}}{
166			my $qtext = $1;
167			$qtext =~ s/\x5C([\x00-\xFF])/$1/g;
168			$qtext;
169			}goex;
170			$quoted_string;
171			}
172
173			=head2 $self->parse_mailbox ($mailbox)
174
175			Parse C<mailbox> and return array of C<addr-spec>,
176			C<display-name> and C<route> (aka C<obs-route> of RFC 2822).
177			This method is intended for internal use.
178
179			=cut
180
181			sub parse_mailbox ($$) {
182			my $self = shift;
183			my $mailbox = shift;
184			if ($mailbox =~ /$REG{M_mailbox}/) {
185			my ($display_name, $route, $addr_spec) = ($1, $2, $3 \|\| $4);
186			$display_name =~ s/$REG{WSP}+$//;
187			$display_name = $self->unquote_quoted_string ($display_name);
188			$addr_spec =~ s{($REG{quoted_string}\|$REG{domain_literal})\|$REG{WSP}}{$1}go;
189			$route =~ s{($REG{quoted_string}\|$REG{domain_literal})\|$REG{WSP}}{$1}go;
190			return ($addr_spec, $display_name, $route);
191			}
192			}
193
194			=head2 $self->parse_address_list ($address_list)
195
196			Parse C<address-list> and return hash.
197			This method is intended for internal use.
198
199			=head3 Structure of hash returned by parse_address_list
200
201			%address = (
202
203			type => '_ROOT',
204			address => [
205
206			## mailbox
207			{
208			type => 'mailbox',
209			display_name => 'Foo H. Bar',
210			addr_spec => 'foo@bar.example',
211			route => '@hoge.example:',
212			},
213
214			## group
215			{
216			type => 'group',
217			display_name => 'The committee',
218			address => [
219
220			## mailbox
221			{
222			type => 'mailbox',
223			display_name => 'Tom (Director)',
224			addr_spec => 'tom@committee.example',
225			route => '',
226			}
227
228			],
229			},
230
231			],
232
233			);
234
235			=cut
236
237			sub parse_address_list ($$) {
238			my $self = shift;
239			my $address_list = shift;
240			my %r_addr = (type => '_ROOT');
241			$address_list =~ s{($REG{address})}{
242			my $address = $1;
243			if ($address =~ /^$REG{M_group}/) {
244			my %r_group = (type => 'group', display_name => $1);
245			$r_group{display_name} =~ s/$REG{WSP}+$//;
246			$r_group{display_name} = $self->unquote_quoted_string ($r_group{display_name});
247			$address =~ s{($REG{mailbox})}{
248			my ($addr, $name, $route) = $self->parse_mailbox ($1);
249			push @{$r_group{address}}, {type => 'mailbox',
250			display_name => $name, route => $route, addr_spec => $addr};
251			}goex;
252			push @{$r_addr{address}}, \%r_group;
253			} else {
254			my ($addr, $name, $route) = $self->parse_mailbox ($address);
255			push @{$r_addr{address}}, {type => 'mailbox',
256			display_name => $name, route => $route, addr_spec => $addr};
257			}
258			}goex;
259			%r_addr;
260			}
261
262			=head2 $self->delete_comment ($field_body)
263
264			Remove all C<comment> in given strictured C<field-body>.
265			This method is intended for internal use.
266
267			=cut
268
269			sub delete_comment ($$) {
270			my $self = shift;
271			my $body = shift;
272			$body =~ s{($REG{quoted_string}\|$REG{domain_literal})\|$REG{comment}}{
273			my $o = $1; $o? $o : ' ';
274			}gex;
275			$body;
276			}
277
278			=head1 EXAMPLE
279
280			## Compose field-body for To: field.
281
282	wakaba	1.2	use Message::Field::Address;
283	wakaba	1.1	my $addr = new Message::Field::Address;
284			$addr->add ('foo@example.org', name => 'Mr. foo bar');
285			$addr->add ('webmaster@example.org', group => 'administrators');
286			$addr->add ('postmaster@example.org', group => 'administrators');
287
288			my $field_body = $addr->stringify ();
289
290
291			## Output parsed address-list tree.
292
293			use Message::Field::Address;
294			my $addr = Message::Field::Address->parse ($field_body);
295
296			for my $i (@$addr) {
297			if ($i->{type} eq 'group') {
298			print "\x40 $i->{display_name}: \n";
299			for my $j (@{$i->{address}}) {
300			print "\t- $j->{display_name} <$j->{route}$j->{addr_spec}>\n";
301			}
302			} else {
303			print "- $i->{display_name} <$i->{route}$i->{addr_spec}>\n";
304			}
305			}
306
307			=head1 LICENSE
308
309			Copyright 2002 wakaba E<lt>w@suika.fam.cxE<gt>.
310
311			This program is free software; you can redistribute it and/or modify
312			it under the terms of the GNU General Public License as published by
313			the Free Software Foundation; either version 2 of the License, or
314			(at your option) any later version.
315
316			This program is distributed in the hope that it will be useful,
317			but WITHOUT ANY WARRANTY; without even the implied warranty of
318			MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
319			GNU General Public License for more details.
320
321			You should have received a copy of the GNU General Public License
322			along with this program; see the file COPYING. If not, write to
323			the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
324			Boston, MA 02111-1307, USA.
325
326			=head1 CHANGE
327
328			See F<ChangeLog>.
329	wakaba	1.2	$Date: $
330	wakaba	1.1
331			=cut
332
333			1;