Message/Body/Text.pm


=head1 NAME

Message::Body::Text --- Perl Module for Internet Media Types "text/*"

=cut

package Message::Body::Text;
use strict;
use vars qw(%DEFAULT @ISA %REG $VERSION);
$VERSION=do{my @r=(q$Revision: 1.3 $=~/\d+/g);sprintf "%d."."%02d" x $#r,@r};

require Message::Field::Structured;
push @ISA, qw(Message::Field::Structured);
require Message::Header;
require Message::MIME::Charset;
use overload '""' => sub { $_[0]->stringify },
             fallback => 1;
%REG = %Message::Util::REG;

%DEFAULT = (
  -_METHODS     => [qw|value|],
  -_MEMBERS     => [qw|_charset|],
        ## header -- Don't clone
  -body_default_charset => 'us-ascii',
  -body_default_charset_input   => 'iso-2022-int-1',
  -hook_encode_string   => \&Message::Util::encode_body_string,
  -hook_decode_string   => \&Message::Util::decode_body_string,
  -media_type   => 'text',
  -media_subtype        => 'plain',
  -parse_all    => 0,
  -use_normalization    => 0,
  -use_param_charset    => 0,
);

=head1 CONSTRUCTORS

The following methods construct new C<Message::Field::Structured> objects:

=over 4

=cut

## Initialize of this class -- called by constructors
sub _init ($;%) {
  my $self = shift;
  my $DEFAULT = Message::Util::make_clone (\%DEFAULT);
  my %option = @_;
  $self->SUPER::_init (%$DEFAULT, %option);
  
  if (ref $option{entity_header}) {
    $self->{header} = $option{entity_header};
  }
  my $mt = $self->{option}->{media_type};
  my $mst = $self->{option}->{media_subtype};
  my $mt_def = $Message::MIME::MediaType::type{$mt}->{$mst};
  $mt_def = $Message::MIME::MediaType::type{$mt}->{'/default'} unless ref $mt_def;
  $mt_def = $Message::MIME::MediaType::type{'/default'}->{'/default'}
    unless ref $mt_def;
    if ($self->{option}->{format} =~ /http/) {
      $self->{option}->{use_normalization} = 0;
    } else {
      $self->{option}->{use_normalization} = 1;
    }
  if ($mt_def->{mime_charset}) {
    $self->{option}->{use_param_charset} = 1;
    if ($self->{option}->{format} =~ /http/) {
      $self->{option}->{body_default_charset} = 'iso-8859-1';
      $self->{option}->{body_default_charset_input} = 'iso-8859-1';
    } elsif ($self->{option}->{format} =~ /news-usefor|sip/) {
      $self->{option}->{body_default_charset} = 'utf-8';
      $self->{option}->{body_default_charset_input} = 'utf-8';
    } else {
      $self->{option}->{body_default_charset} = 'us-ascii';
      $self->{option}->{body_default_charset_input} = 'iso-2022-int-1';
    }
  }
  if ($mt_def->{default_charset}) {
    $self->{option}->{body_default_charset} = $mt_def->{default_charset};
  }
}

=item $body = Message::Body::TextPlain->new ([%options])

Constructs a new object.  You might pass some options as parameters 
to the constructor.

=cut

## Inherited

=item $body = Message::Body::TextPlain->parse ($body, [%options])

Constructs a new object with given field body.  You might pass 
some options as parameters to the constructor.

=cut

sub parse ($$;%) {
  my $class = shift;
  my $self = bless {}, $class;
  my $body = shift;
  $self->_init (@_);
  $self->_parse ($body);
  $self;
}

sub _parse ($$) {
  my $self = shift;
  my $body = shift;
  my $charset;
  if ($self->{option}->{use_param_charset}) {
    my $ct;
    $ct = $self->{header}->field ('content-type', -new_item_unless_exist => 0) 
      if ref $self->{header};
    $charset = $ct->parameter ('charset') if ref $ct;
  }
  unless ($charset) {
    $charset = $self->{option}->{encoding_before_decode};
  }
  my %s = &{$self->{option}->{hook_decode_string}} ($self, $body,
    type => 'body', charset => $charset);
  $self->{value} = $s{value};
  $self->{_charset} = $s{charset};      ## In case convertion failed
}

=back

=cut

=item $body->header ([$new_header])


=cut

sub entity_header ($;$) {
  my $self = shift;
  my $new_header = shift;
  if (ref $new_header) {
    $self->{header} = $new_header;
  }
  $self->{header};
}

=item $body->value ([$new_body])

Returns C<body> as string unless $new_body.
Set $new_body instead of current C<body>.

=cut

sub value ($;$) {
  my $self = shift;
  my $new_body = shift;
  if ($new_body) {
    $self->{value} = $new_body;
  }
  $self->{value};
}

=head2 $self->stringify ([%option])

Returns the C<body> as a string.

=cut

sub stringify ($;%) {
  my $self = shift;
  my %o = @_;  my %option = %{$self->{option}};
  for (grep {/^-/} keys %o) {$option{substr ($_, 1)} = $o{$_}}
  my $v = $self->_prep_stringify ($self->{value}, \%option);
  my $ct = $self->{header}->field ('content-type', -new_item_unless_exist => 0)
    if ref $self->{header};
  unless ($option{use_param_charset}) {
    if ($option{use_normalization}) {
        $v =~ s/\x0D(?!\x0A)/\x0D\x0A/gs;
        $v =~ s/(?<!\x0D)\x0A/\x0D\x0A/gs;
        #$v .= "\x0D\x0A" unless $v =~ /\x0D\x0A$/s;
    }
    return $v;
  }
  my %e;
  unless ($self->{_charset}) {
    my $charset;
    if ($option{use_param_charset}) {
      $charset = $ct->parameter ('charset') if ref $ct;
    }
    $charset ||= $option{encoding_after_encode};
    (%e) = &{$option{hook_encode_string}} ($self, $v,
      type => 'body', charset => $charset);
    ## Normalize
    if ($option{use_normalization}) {
      if ($Message::MIME::Charset::CHARSET{ $charset }->{mime_text}) {
        $e{value} =~ s/\x0D(?!\x0A)/\x0D\x0A/gs;
        $e{value} =~ s/(?<!\x0D)\x0A/\x0D\x0A/gs;
        #$e{value} .= "\x0D\x0A" unless $e{value} =~ /\x0D\x0A$/s;
      }
    }
  } else {      ## if $self->{_charset},
    %e = (value => $v, charset => $self->{_charset});
  }
  if (ref $self->{header}) {
    unless (ref $ct) {
      $ct = $self->{header}->field ('content-type');
      $ct->value ($option{parent_type});
    }
    if ($e{charset}) {
      $ct->replace (charset => $e{charset});
    } else {
      $ct->replace (Message::MIME::Charset::name_minimumize
                    ($option{body_default_charset}, $e{value}));
    }
  }
  $e{value};
}
*as_string = \&stringify;

## $self->_prep_stringify ($value, \%option)
sub _prep_stringify ($$\%) {
  my $self = shift;
  shift;
}

## Inherited: option, clone

=head1 SEE ALSO

RFC 822 <urn:ietf:rfc:822>,
RFC 2046 <urn:ietf:rfc:2046>, RFC 2646 <urn:ietf:rfc:2646>.

=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: 2002/07/03 23:39:15 $

=cut

1;
1	wakaba	1.1
2			=head1 NAME
3
4			Message::Body::Text --- Perl Module for Internet Media Types "text/*"
5
6			=cut
7
8			package Message::Body::Text;
9			use strict;
10			use vars qw(%DEFAULT @ISA %REG $VERSION);
11	wakaba	1.4	$VERSION=do{my @r=(q$Revision: 1.3 $=~/\d+/g);sprintf "%d."."%02d" x $#r,@r};
12	wakaba	1.1
13			require Message::Field::Structured;
14			push @ISA, qw(Message::Field::Structured);
15			require Message::Header;
16			require Message::MIME::Charset;
17			use overload '""' => sub { $_[0]->stringify },
18			fallback => 1;
19			%REG = %Message::Util::REG;
20
21			%DEFAULT = (
22			-_METHODS => [qw\|value\|],
23			-_MEMBERS => [qw\|_charset\|],
24			## header -- Don't clone
25	wakaba	1.4	-body_default_charset => 'us-ascii',
26			-body_default_charset_input => 'iso-2022-int-1',
27	wakaba	1.1	-hook_encode_string => \&Message::Util::encode_body_string,
28			-hook_decode_string => \&Message::Util::decode_body_string,
29			-media_type => 'text',
30			-media_subtype => 'plain',
31			-parse_all => 0,
32			-use_normalization => 0,
33			-use_param_charset => 0,
34			);
35
36			=head1 CONSTRUCTORS
37
38			The following methods construct new C<Message::Field::Structured> objects:
39
40			=over 4
41
42			=cut
43
44			## Initialize of this class -- called by constructors
45			sub _init ($;%) {
46			my $self = shift;
47			my $DEFAULT = Message::Util::make_clone (\%DEFAULT);
48			my %option = @_;
49			$self->SUPER::_init (%$DEFAULT, %option);
50
51			if (ref $option{entity_header}) {
52			$self->{header} = $option{entity_header};
53			}
54			my $mt = $self->{option}->{media_type};
55			my $mst = $self->{option}->{media_subtype};
56			my $mt_def = $Message::MIME::MediaType::type{$mt}->{$mst};
57			$mt_def = $Message::MIME::MediaType::type{$mt}->{'/default'} unless ref $mt_def;
58			$mt_def = $Message::MIME::MediaType::type{'/default'}->{'/default'}
59			unless ref $mt_def;
60			if ($self->{option}->{format} =~ /http/) {
61			$self->{option}->{use_normalization} = 0;
62			} else {
63			$self->{option}->{use_normalization} = 1;
64			}
65			if ($mt_def->{mime_charset}) {
66			$self->{option}->{use_param_charset} = 1;
67			if ($self->{option}->{format} =~ /http/) {
68	wakaba	1.4	$self->{option}->{body_default_charset} = 'iso-8859-1';
69			$self->{option}->{body_default_charset_input} = 'iso-8859-1';
70	wakaba	1.3	} elsif ($self->{option}->{format} =~ /news-usefor\|sip/) {
71	wakaba	1.4	$self->{option}->{body_default_charset} = 'utf-8';
72			$self->{option}->{body_default_charset_input} = 'utf-8';
73	wakaba	1.1	} else {
74	wakaba	1.4	$self->{option}->{body_default_charset} = 'us-ascii';
75			$self->{option}->{body_default_charset_input} = 'iso-2022-int-1';
76	wakaba	1.1	}
77			}
78			if ($mt_def->{default_charset}) {
79	wakaba	1.4	$self->{option}->{body_default_charset} = $mt_def->{default_charset};
80	wakaba	1.1	}
81			}
82
83			=item $body = Message::Body::TextPlain->new ([%options])
84
85			Constructs a new object. You might pass some options as parameters
86			to the constructor.
87
88			=cut
89
90			## Inherited
91
92			=item $body = Message::Body::TextPlain->parse ($body, [%options])
93
94			Constructs a new object with given field body. You might pass
95			some options as parameters to the constructor.
96
97			=cut
98
99			sub parse ($$;%) {
100			my $class = shift;
101			my $self = bless {}, $class;
102			my $body = shift;
103			$self->_init (@_);
104			$self->_parse ($body);
105			$self;
106			}
107
108			sub _parse ($$) {
109			my $self = shift;
110			my $body = shift;
111			my $charset;
112	wakaba	1.4	if ($self->{option}->{use_param_charset}) {
113			my $ct;
114			$ct = $self->{header}->field ('content-type', -new_item_unless_exist => 0)
115			if ref $self->{header};
116			$charset = $ct->parameter ('charset') if ref $ct;
117			}
118			unless ($charset) {
119			$charset = $self->{option}->{encoding_before_decode};
120			}
121	wakaba	1.1	my %s = &{$self->{option}->{hook_decode_string}} ($self, $body,
122			type => 'body', charset => $charset);
123			$self->{value} = $s{value};
124	wakaba	1.4	$self->{_charset} = $s{charset}; ## In case convertion failed
125	wakaba	1.1	}
126
127			=back
128
129			=cut
130
131			=item $body->header ([$new_header])
132
133
134			=cut
135
136			sub entity_header ($;$) {
137			my $self = shift;
138			my $new_header = shift;
139			if (ref $new_header) {
140			$self->{header} = $new_header;
141			}
142			$self->{header};
143			}
144
145			=item $body->value ([$new_body])
146
147			Returns C<body> as string unless $new_body.
148			Set $new_body instead of current C<body>.
149
150			=cut
151
152			sub value ($;$) {
153			my $self = shift;
154			my $new_body = shift;
155			if ($new_body) {
156			$self->{value} = $new_body;
157			}
158			$self->{value};
159			}
160
161			=head2 $self->stringify ([%option])
162
163			Returns the C<body> as a string.
164
165			=cut
166
167			sub stringify ($;%) {
168			my $self = shift;
169			my %o = @_; my %option = %{$self->{option}};
170			for (grep {/^-/} keys %o) {$option{substr ($_, 1)} = $o{$_}}
171			my $v = $self->_prep_stringify ($self->{value}, \%option);
172			my $ct = $self->{header}->field ('content-type', -new_item_unless_exist => 0)
173			if ref $self->{header};
174			unless ($option{use_param_charset}) {
175			if ($option{use_normalization}) {
176			$v =~ s/\x0D(?!\x0A)/\x0D\x0A/gs;
177			$v =~ s/(?<!\x0D)\x0A/\x0D\x0A/gs;
178			#$v .= "\x0D\x0A" unless $v =~ /\x0D\x0A$/s;
179			}
180			return $v;
181			}
182			my %e;
183			unless ($self->{_charset}) {
184	wakaba	1.4	my $charset;
185			if ($option{use_param_charset}) {
186			$charset = $ct->parameter ('charset') if ref $ct;
187			}
188			$charset \|\|= $option{encoding_after_encode};
189	wakaba	1.1	(%e) = &{$option{hook_encode_string}} ($self, $v,
190			type => 'body', charset => $charset);
191			## Normalize
192			if ($option{use_normalization}) {
193	wakaba	1.4	if ($Message::MIME::Charset::CHARSET{ $charset }->{mime_text}) {
194	wakaba	1.1	$e{value} =~ s/\x0D(?!\x0A)/\x0D\x0A/gs;
195			$e{value} =~ s/(?<!\x0D)\x0A/\x0D\x0A/gs;
196			#$e{value} .= "\x0D\x0A" unless $e{value} =~ /\x0D\x0A$/s;
197			}
198			}
199			} else { ## if $self->{_charset},
200			%e = (value => $v, charset => $self->{_charset});
201			}
202			if (ref $self->{header}) {
203			unless (ref $ct) {
204			$ct = $self->{header}->field ('content-type');
205			$ct->value ($option{parent_type});
206			}
207	wakaba	1.4	if ($e{charset}) {
208			$ct->replace (charset => $e{charset});
209			} else {
210			$ct->replace (Message::MIME::Charset::name_minimumize
211			($option{body_default_charset}, $e{value}));
212			}
213	wakaba	1.1	}
214			$e{value};
215			}
216			*as_string = \&stringify;
217
218			## $self->_prep_stringify ($value, \%option)
219			sub _prep_stringify ($$\%) {
220			my $self = shift;
221			shift;
222			}
223
224			## Inherited: option, clone
225
226			=head1 SEE ALSO
227
228			RFC 822 <urn:ietf:rfc:822>,
229			RFC 2046 <urn:ietf:rfc:2046>, RFC 2646 <urn:ietf:rfc:2646>.
230
231			=head1 LICENSE
232
233			Copyright 2002 wakaba E<lt>w@suika.fam.cxE<gt>.
234
235			This program is free software; you can redistribute it and/or modify
236			it under the terms of the GNU General Public License as published by
237			the Free Software Foundation; either version 2 of the License, or
238			(at your option) any later version.
239
240			This program is distributed in the hope that it will be useful,
241			but WITHOUT ANY WARRANTY; without even the implied warranty of
242			MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
243			GNU General Public License for more details.
244
245			You should have received a copy of the GNU General Public License
246			along with this program; see the file COPYING. If not, write to
247			the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
248			Boston, MA 02111-1307, USA.
249
250			=head1 CHANGE
251
252			See F<ChangeLog>.
253	wakaba	1.4	$Date: 2002/07/03 23:39:15 $
254	wakaba	1.1
255			=cut
256
257			1;