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revision 1.16 by wakaba, Fri Apr 19 12:00:36 2002 UTC revision 1.41 by wakaba, Sun Jul 28 00:31:38 2002 UTC
# Line 1  Line 1 
1    
2  =head1 NAME  =head1 NAME
3    
4  Message::Header Perl module  Message::Header --- A Perl Module for Internet Message Headers
   
 =head1 DESCRIPTION  
   
 Perl module for RFC 822/2822 message C<header>.  
5    
6  =cut  =cut
7    
8  package Message::Header;  package Message::Header;
9  use strict;  use strict;
10  use vars qw($VERSION %REG);  use vars qw(%DEFAULT @ISA %REG $VERSION);
11  $VERSION = '1.00';  $VERSION=do{my @r=(q$Revision$=~/\d+/g);sprintf "%d."."%02d" x $#r,@r};
12  use Carp ();  require Message::Field::Structured;     ## This may seem silly:-)
13  use overload '@{}' => sub { shift->_delete_empty_field->{field} },  push @ISA, qw(Message::Field::Structured);
14               '""' => sub { shift->stringify },  
15               fallback => 1;  %REG = %Message::Util::REG;
16            $REG{M_field} = qr/^([^\x3A]+):$REG{FWS}([\x00-\xFF]*)$/;
17  $REG{WSP}     = qr/[\x09\x20]/;          $REG{M_fromline} = qr/^\x3E?From$REG{WSP}+([\x00-\xFF]*)$/;
18  $REG{FWS}     = qr/[\x09\x20]*/;          $REG{ftext} = qr/[\x21-\x39\x3B-\x7E]+/;        ## [2]822
19  $REG{M_field} = qr/^([^\x3A]+):$REG{FWS}([\x00-\xFF]*)$/;          $REG{NON_ftext} = qr/[^\x21-\x39\x3B-\x7E]/;    ## [2]822
20  $REG{M_fromline} = qr/^\x3E?From$REG{WSP}+([\x00-\xFF]*)$/;          $REG{NON_ftext_usefor} = qr/[^0-9A-Za-z-]/;     ## name-character
21  $REG{UNSAFE_field_name} = qr/[\x00-\x20\x3A\x7F-\xFF]/;          $REG{NON_ftext_http} = $REG{NON_http_token};
22    
23  =head2 options  ## Namespace support
24            our %NS_phname2uri;     ## PH-namespace name -> namespace URI
25  These options can be getten/set by C<get_option>/C<set_option>          our %NS_uri2package;    ## namespace URI -> Package name
26  method.          our %NS_uri2phpackage;  ## namespace URI -> PH-Package name
27            require Message::Header::Default;       ## Default namespace
28  =head3 capitalize = 0/1  
29    ## Initialize of this class -- called by constructors
30  (First character of) C<field-name> is capitalized  %DEFAULT = (
31  when C<stringify>.  (Default = 1)      -_HASH_NAME => 'value',
32        -_METHODS   => [qw|field field_exist field_type add replace count delete subject id is|],
33  =head3 fold_length = numeric value      -_MEMBERS   => [qw|value|],
34        -_VALTYPE_DEFAULT   => ':default',
35  Length of line used to fold.  (Default = 70)      -by => 'name',
36        -field_format_pattern       => '%s: %s',
37  =head3 mail_from = 0/1      -field_name_case_sensible   => 0,
38        -field_name_unsafe_rule     => 'NON_ftext',
39  Outputs "From " line (known as Un*x From, Mail-From, and so on)      -field_name_validation      => 0,
40  when C<stringify>.  (Default = 0)      -field_sort => 0,
41        -format     => 'mail-rfc2822',
42  =cut      -header_default_charset     => 'iso-2022-int-1',
43        -header_default_charset_input       => 'iso-2022-int-1',
44        -hook_init_fill_options     => sub {},
45        -hook_stringify_fill_fields => sub {},
46        -linebreak_strict   => 0,
47        -line_length_max    => 60,  ## For folding
48        #ns_default_phuri
49        -output_bcc => 0,
50        -output_folding     => 1,
51        -output_mail_from   => 0,
52        #parse_all
53        -translate_underscore       => 1,
54        #uri_mailto_safe
55        -uri_mailto_safe_level      => 4,
56        -use_folding        => 1,
57        #value_type
58    );
59    
60  =head1 CONSTRUCTORS  =head1 CONSTRUCTORS
61    
# Line 53  The following methods construct new C<Me Line 65  The following methods construct new C<Me
65    
66  =cut  =cut
67    
 ## Initialize  
 my %DEFAULT = (  
   capitalize    => 1,  
   fold_length   => 70,  
   #field_type   => {},  
   format        => 'mail-rfc2822',  
   mail_from     => 0,  
   output_bcc    => 0,  
   parse_all     => 0,  
   sort  => 'none',  
   translate_underscore  => 1,  
   validate      => 1,  
 );  
 $DEFAULT{field_type} = {  
         ':DEFAULT'      => 'Message::Field::Unstructured',  
           
         received        => 'Message::Field::Received',  
         'x-received'    => 'Message::Field::Received',  
           
         'content-type'  => 'Message::Field::ContentType',  
         'content-disposition'   => 'Message::Field::ContentDisposition',  
         'auto-submitted'        => 'Message::Field::ValueParams',  
         link    => 'Message::Field::ValueParams',  
         archive => 'Message::Field::ValueParams',  
         'x-face-type'   => 'Message::Field::ValueParams',  
           
         subject => 'Message::Field::Subject',  
         'x-nsubject'    => 'Message::Field::Subject',  
           
         'list-software' => 'Message::Field::UA',  
         'user-agent'    => 'Message::Field::UA',  
         server  => 'Message::Field::UA',  
           
         ## Numeric value  
         'content-length'        => 'Message::Field::Numval',  
         lines   => 'Message::Field::Numval',  
         'max-forwards'  => 'Message::Field::Numval',  
         'mime-version'  => 'Message::Field::Numval',  
         'x-jsmail-priority'     => 'Message::Field::Numval',  
         'x-mail-count'  => 'Message::Field::Numval',  
         'x-ml-count'    => 'Message::Field::Numval',  
         'x-priority'    => 'Message::Field::Numval',  
           
         path    => 'Message::Field::Path',  
 };  
 for (qw(archive cancel-lock content-features content-md5  
   disposition-notification-options encoding  
   importance injector-info  
   pics-label posted-and-mailed precedence list-id message-type  
   original-recipient priority  
   sensitivity status x-face x-msmail-priority xref))  
   {$DEFAULT{field_type}->{$_} = 'Message::Field::Structured'}  
         ## Not supported yet, but to be supported...  
 for (qw(abuse-reports-to apparently-to approved approved-by bcc cc complaints-to  
   delivered-to disposition-notification-to envelope-to  
   errors-to  from mail-copies-to mail-followup-to mail-reply-to  
   notice-requested-upon-delivery-to read-receipt-to register-mail-reply-requested-by  
   reply-to resent-bcc  
   resent-cc resent-to resent-from resent-sender return-path  
   return-receipt-to return-receipt-requested-to sender to x-abuse-reports-to  
   x-admin x-approved  
   x-beenthere  
   x-confirm-reading-to  
   x-complaints-to x-envelope-from x-envelope-sender  
   x-envelope-to x-ml-address x-ml-command x-ml-to x-nfrom x-nto  
   x-rcpt-to x-sender x-x-sender))  
   {$DEFAULT{field_type}->{$_} = 'Message::Field::Address'}  
 for (qw(date date-received delivery-date expires  
   expire-date nntp-posting-date posted posted-date reply-by resent-date  
   x-originalarrivaltime x-tcup-date))  
   {$DEFAULT{field_type}->{$_} = 'Message::Field::Date'}  
 for (qw(article-updates client-date content-id in-reply-to message-id  
   obsoletes references replaces resent-message-id see-also supersedes))  
   {$DEFAULT{field_type}->{$_} = 'Message::Field::MsgID'}  
 for (qw(accept accept-charset accept-encoding accept-language  
   content-language  
   content-transfer-encoding encrypted followup-to keywords  
   list-archive list-digest list-help list-owner  
   list-post list-subscribe list-unsubscribe list-url uri newsgroups  
   posted-to  
   x-brother x-daughter x-respect x-moe x-syster x-wife))  
   {$DEFAULT{field_type}->{$_} = 'Message::Field::CSV'}  
 for (qw(content-alias content-base content-location location referer  
   url x-home-page x-http_referer  
   x-info x-pgp-key x-ml-url x-uri x-url x-web))  
   {$DEFAULT{field_type}->{$_} = 'Message::Field::URI'}  
   
 ## taken from L<HTTP::Header>  
 # "Good Practice" order of HTTP message headers:  
 #    - General-Headers  
 #    - Request-Headers  
 #    - Response-Headers  
 #    - Entity-Headers  
 # (From draft-ietf-http-v11-spec-rev-01, Nov 21, 1997)  
 my @header_order = qw(  
   mail-from x-envelope-from relay-version path status  
   
    cache-control connection date pragma transfer-encoding upgrade trailer via  
   
    accept accept-charset accept-encoding accept-language  
    authorization expect from host  
    if-modified-since if-match if-none-match if-range if-unmodified-since  
    max-forwards proxy-authorization range referer te user-agent  
   
    accept-ranges age location proxy-authenticate retry-after server vary  
    warning www-authenticate  
   
    mime-version  
    allow content-base content-encoding content-language content-length  
    content-location content-md5 content-range content-type  
    etag expires last-modified content-style-type content-script-type  
    link  
   
   xref  
 );  
 my %header_order;  
   
68  sub _init ($;%) {  sub _init ($;%) {
69    my $self = shift;    my $self = shift;
70    my %options = @_;    my %options = @_;
71    $self->{field} = [];    my $DEFAULT = Message::Util::make_clone (\%DEFAULT);
72    $self->{option} = \%DEFAULT;    $self->SUPER::_init (%$DEFAULT, %options);
73      $self->{value} = [];
74      $self->_ns_load_ph ('default');
75      $self->_ns_load_ph ('x-rfc822');
76      $self->_ns_load_ph ('x-http');
77      $self->{option}->{ns_default_phuri} = $self->{ns}->{phname2uri}->{'x-rfc822'}
78        unless $self->{option}->{ns_default_phuri};
79      
80      ## For text/rfc822-headers
81      if (ref $options{entity_header}) {
82        $self->{entity_header} = $options{entity_header};
83        delete $options{entity_header};
84      }
85    my @new_fields = ();    my @new_fields = ();
86    for my $name (keys %options) {    for my $name (keys %options) {
87      if (substr ($name, 0, 1) eq '-') {      unless (substr ($name, 0, 1) eq '-') {
       $self->{option}->{substr ($name, 1)} = $options{$name};  
     } else {  
88        push @new_fields, ($name => $options{$name});        push @new_fields, ($name => $options{$name});
89      }      }
90    }    }
91      &{ $self->{option}->{hook_init_fill_options} } ($self, $self->{option});
92      $self->_init_by_format ($self->{option}->{format}, $self->{option});
93    $self->add (@new_fields, -parse => $self->{option}->{parse_all})    $self->add (@new_fields, -parse => $self->{option}->{parse_all})
94      if $#new_fields > -1;      if $#new_fields > -1;
95      }
96    my $format = $self->{option}->{format};  
97    if ($format =~ /^cgi/) {  sub _init_by_format ($$\%) {
98      unshift @header_order, qw(content-type location);    my $self = shift;
99      $self->{option}->{sort} = 'good-practice';    my ($format, $option) = @_;
100    } elsif ($format =~ /^http/) {    if ($format =~ /http/) {
101      $self->{option}->{sort} = 'good-practice';      $option->{ns_default_phuri} = $self->{ns}->{phname2uri}->{'x-http'};
102        if ($format =~ /cgi/) {
103          #unshift @header_order, qw(content-type location);
104          $option->{field_sort} = 'good-practice';
105          $option->{use_folding} = 0;
106        } else {
107          $option->{field_sort} = 'good-practice';
108        }
109      } elsif ($format =~ /mail|news|mime/) {       ## RFC 822
110        $option->{ns_default_phuri} = $self->{ns}->{phname2uri}->{'x-rfc822'};
111    }    }
112        if ($format =~ /uri-url-mailto/) {
113    # Make alternative representations of @header_order.  This is used      $option->{output_bcc} = 0;
114    # for sorting.      $option->{field_format_pattern} = '%s=%s';
115    my $i = 1;      $option->{output_folding} = sub {
116    for (@header_order) {        $_[1] =~ s/([^:@+\$A-Za-z0-9\-_.!~*])/sprintf('%%%02X', ord $1)/ge;
117        $header_order{$_} = $i++ unless $header_order{$_};        $_[1];
118        };  ## Yes, this is not folding!
119    }    }
120  }  }
121    
122  =item Message::Header->new ([%initial-fields/options])  =item $msg = Message::Header->new ([%initial-fields/options])
123    
124  Constructs a new C<Message::Headers> object.  You might pass some initial  Constructs a new C<Message::Headers> object.  You might pass some initial
125  C<field-name>-C<field-body> pairs and/or options as parameters to the constructor.  C<field-name>-C<field-body> pairs and/or options as parameters to the constructor.
# Line 218  Example: Line 135  Example:
135    
136  =cut  =cut
137    
138  sub new ($;%) {  ## Inherited
   my $class = shift;  
   my $self = bless {}, $class;  
   $self->_init (@_);  
   $self;  
 }  
139    
140  =item Message::Header->parse ($header, [%initial-fields/options])  =item $msg = Message::Header->parse ($header, [%initial-fields/options])
141    
142  Parses given C<header> and constructs a new C<Message::Headers>  Parses given C<header> and constructs a new C<Message::Headers>
143  object.  You might pass some additional C<field-name>-C<field-body> pairs  object.  You might pass some additional C<field-name>-C<field-body> pairs
# Line 238  sub parse ($$;%) { Line 150  sub parse ($$;%) {
150    my $header = shift;    my $header = shift;
151    my $self = bless {}, $class;    my $self = bless {}, $class;
152    $self->_init (@_);    $self->_init (@_);
153    $header =~ s/\x0D?\x0A$REG{WSP}/\x20/gos;     ## unfold    if ($self->{option}->{linebreak_strict}) {
154        $header =~ s/\x0D\x0A$REG{WSP}/\x20/gos if $self->{option}->{use_folding};
155      } else {
156        $header =~ s/\x0D?\x0A$REG{WSP}/\x20/gos if $self->{option}->{use_folding};
157      }
158      my %option = (%{ $self->{option} });
159      $option{parse_all} = 0;
160    for my $field (split /\x0D?\x0A/, $header) {    for my $field (split /\x0D?\x0A/, $header) {
161      if ($field =~ /$REG{M_fromline}/) {      if ($field =~ /$REG{M_fromline}/) {
162        my $body = $1;        my ($s,undef,$value) = $self->_value_to_arrayitem
163        $body = $self->_field_body ($body, 'mail-from')          ('mail-from' => $1, \%option);
164          if $self->{option}->{parse_all};        push @{$self->{value}}, $value if $s;
       push @{$self->{field}}, {name => 'mail-from', body => $body};  
165      } elsif ($field =~ /$REG{M_field}/) {      } elsif ($field =~ /$REG{M_field}/) {
166        my ($name, $body) = (lc $1, $2);        my ($name, $body) = ($1, $2);
       $name =~ s/$REG{WSP}+$//;  
167        $body =~ s/$REG{WSP}+$//;        $body =~ s/$REG{WSP}+$//;
168        $body = $self->_field_body ($body, $name) if $self->{option}->{parse_all};        my ($s,undef,$value) = $self->_value_to_arrayitem
169        push @{$self->{field}}, {name => $name, body => $body};          ($name => $body, \%option);
170      }        push @{$self->{value}}, $value if $s;
171        } elsif (length $field) {
172          my ($s,undef,$value) = $self->_value_to_arrayitem
173            ('x-unknown' => $field, \%option);
174          push @{$self->{value}}, $value if $s;
175        }
176      }
177      $self->_ns_associate_numerical_prefix;        ## RFC 2774 namespace
178      for (@{ $self->{value} }) {
179        no strict 'refs';
180        $_->{name}
181          = &{ ${ &_NS_uri2package ($_->{ns}).'::OPTION' }{n11n_name} }
182          ($self, &_NS_uri2package ($_->{ns}), $_->{name});
183        $_->{body} = $self->_parse_value ($_->{name} => $_->{body}, ns => $_->{ns})
184          if $self->{option}->{parse_all};
185    }    }
186    $self;    $self;
187  }  }
188    
189  =item Message::Header->parse_array (\@header, [%initial-fields/options])  =item $msg = Message::Header->parse_array (\@header, [%initial-fields/options])
190    
191  Parses given C<header> and constructs a new C<Message::Headers>  Parses given C<header> and constructs a new C<Message::Headers>
192  object.  Same as C<Message::Header-E<lt>parse> but this method  object.  Same as C<Message::Header-E<lt>parse> but this method
# Line 275  sub parse_array ($\@;%) { Line 205  sub parse_array ($\@;%) {
205    $self->_init (@_);    $self->_init (@_);
206    while (1) {    while (1) {
207      my $field = shift @$header;      my $field = shift @$header;
208      while (1) {      if ($self->{option}->{use_folding}) {
209        if ($$header[0] =~ /^$REG{WSP}/) {        while (1) {
210          $field .= shift @$header;          if ($$header[0] =~ /^$REG{WSP}/) {
211        } else {last}            $field .= shift @$header;
212            } else {last}
213          }
214        }
215        if ($self->{option}->{linebreak_strict}) {
216          $field =~ s/\x0D\x0A//g;
217        } else {
218          $field =~ tr/\x0D\x0A//d;
219      }      }
220      $field =~ tr/\x0D\x0A//d;   ## BUG: not safe for bar CR/LF      local $self->{option}->{parse} = $self->{option}->{parse_all};
221      if ($field =~ /$REG{M_fromline}/) {      if ($field =~ /$REG{M_fromline}/) {
222        my $body = $1;        my ($s,undef,$value) = $self->_value_to_arrayitem
223        $body = $self->_field_body ($body, 'mail-from')          ('mail-from' => $1, $self->{option});
224          if $self->{option}->{parse_all};        push @{$self->{value}}, $value if $s;
       push @{$self->{field}}, {name => 'mail-from', body => $body};  
225      } elsif ($field =~ /$REG{M_field}/) {      } elsif ($field =~ /$REG{M_field}/) {
226        my ($name, $body) = (lc $1, $2);        my ($name, $body) = ($self->_n11n_field_name ($1), $2);
       $name =~ s/$REG{WSP}+$//;  
227        $body =~ s/$REG{WSP}+$//;        $body =~ s/$REG{WSP}+$//;
228        $body = $self->_field_body ($body, $name) if $self->{option}->{parse_all};        my ($s,undef,$value) = $self->_value_to_arrayitem
229        push @{$self->{field}}, {name => $name, body => $body};          ($name => $body, $self->{option});
230          push @{$self->{value}}, $value if $s;
231        } elsif (length $field) {
232          my ($s,undef,$value) = $self->_value_to_arrayitem
233            ('x-unknown' => $field, $self->{option});
234          push @{$self->{value}}, $value if $s;
235      }      }
236      last if $#$header < 0;      last if $#$header < 0;
237    }    }
238      $self->_ns_associate_numerical_prefix;        ## RFC 2774 namespace
239    $self;    $self;
240  }  }
241    
# Line 311  context, only first one is returned.) Line 252  context, only first one is returned.)
252    
253  =cut  =cut
254    
255  sub field ($$) {  sub field ($@) {shift->SUPER::item (@_)}
256    sub field_exist ($@) {shift->SUPER::item_exist (@_)}
257    
258    ## item-by?, \$checked-item, {item-key => 1}, \%option
259    sub _item_match ($$\$\%\%) {
260    my $self = shift;    my $self = shift;
261    my $name = lc shift;    my ($by, $i, $list, $option) = @_;
262    my @ret;    return 0 unless ref $$i;  ## Already removed
263    for my $field (@{$self->{field}}) {    if ($by eq 'name') {
264      if ($field->{name} eq $name) {      my %o = %$option; #$o{parse} = 0;
265        unless (wantarray) {      my %l;
266          $field->{body} = $self->_field_body ($field->{body}, $name);      for (keys %$list) {
267          return $field->{body};        my ($s, undef, $v) = $self->_value_to_arrayitem ($_, '', \%o);
268          if ($s) {
269            $l{$v->{name} . ':' . ( $option->{ns} || $v->{ns} ) } = 1;
270        } else {        } else {
271          $field->{body} = $self->_field_body ($field->{body}, $name);          $l{$v->{name} .':'. ( $option->{ns} || $self->{option}->{ns_default_phuri} ) } = 1;
272          push @ret, $field->{body};        }
273        }
274        return 1 if $l{$$i->{name} . ':' . $$i->{ns}};
275      } elsif ($by eq 'ns') {
276        return 1 if $list->{ $$i->{ns} };
277      } elsif ($by eq 'http-ns-define') {
278        if ($$i->{ns} eq $self->{ns}->{phname2uri}->{'x-http'}
279         || $$i->{ns} eq $self->{ns}->{phname2uri}->{'x-http-c'}) {
280          my $n = $$i->{name};
281          if ($n eq 'opt' || $n eq 'c-opt' || $n eq 'man' || $n eq 'c-man') {
282            $option->{parse} = 0;
283            $$i->{body} = $self->_parse_value ($$i->{name} => $$i->{body}, ns => $$i->{ns});
284            for my $j (0..$$i->{body}->count-1) {
285              return 1 if $list->{ ($$i->{body}->value ($j))[0]->value };
286            }
287        }        }
288      }      }
289    }    }
290    if ($#ret < 0) {    0;
     return $self->add ($name);  
   }  
   @ret;  
291  }  }
292    *_delete_match = \&_item_match;
293    
294  sub field_exist ($$) {  ## Returns returned item value    \$item-value, \%option
295    my $self = shift;  sub _item_return_value ($\$\%) {
296    my $name = lc shift;    if (ref ${$_[1]}->{body}) {
297    my @ret;      ${$_[1]}->{body};
298    for my $field (@{$self->{field}}) {    } else {
299      return 1 if ($field->{name} eq $name);      ${$_[1]}->{body} = $_[0]->_parse_value (${$_[1]}->{name} => ${$_[1]}->{body},
300          ns => ${$_[1]}->{ns});
301        ${$_[1]}->{body};
302      }
303    }
304    *_add_return_value = \&_item_return_value;
305    *_replace_return_value = \&_item_return_value;
306    
307    ## Returns returned (new created) item value    $name, \%option
308    sub _item_new_value ($$\%) {
309      my $self = shift;
310      my ($name, $option) = @_;
311      if ($option->{by} eq 'http-ns-define') {
312        my $value = $self->_parse_value (opt => '', ns => $self->{ns}->{phname2uri}->{'x-http'});
313        ($value->value (0))[0]->value ($name);
314        {name => 'opt', body => $value, ns => $self->{ns}->{phname2uri}->{'x-http'}};
315      } else {
316        my ($s,undef,$value) = $self->_value_to_arrayitem
317            ($name => '', $option);
318        $s? $value: undef;
319    }    }
   0;  
320  }  }
321    
 =head2 $self->field_name ($index)  
   
 Returns C<field-name> of $index'th C<field>.  
322    
 =head2 $self->field_body ($index)  
323    
324  Returns C<field-body> of $index'th C<field>.  ## $self->_parse_value ($type, $value, %options);
325    sub _parse_value ($$$;%) {
326  =cut    my $self = shift;
327      my $name = shift ;#|| $self->{option}->{_VALTYPE_DEFAULT};
328  sub field_name ($$) {    my $value = shift;  return $value if ref $value;
329    my $self = shift;    my %option = @_;
330    $self->{field}->[shift]->{name};    my $vtype; { no strict 'refs';
331  }      my $vt = ${&_NS_uri2package ($option{ns}).'::OPTION'}{value_type};
332  sub field_body ($$) {      if (ref $vt) {
333    my $self = shift;        $vtype = $vt->{$name} || $vt->{$self->{option}->{_VALTYPE_DEFAULT}};
334    my $i = shift;      }
335    $self->{field}->[$i]->{body}      ## For compatiblity.
336     = $self->_field_body ($self->{field}->[$i]->{body}, $self->{field}->[$i]->{name});      unless (ref $vtype) { $vtype = $self->{option}->{value_type}->{$name}
337    $self->{field}->[$i]->{body};        || $self->{option}->{value_type}->{$self->{option}->{_VALTYPE_DEFAULT}} }
338  }    }
339      my $vpackage = $vtype->[0];
340  sub _field_body ($$$) {    my %vopt = %{$vtype->[1]} if ref $vtype->[1];
341    my $self = shift;    if ($vpackage eq ':none:') {
342    my ($body, $name) = @_;      return $value;
343    unless (ref $body) {    } elsif (length $value) {
344      my $type = $self->{option}->{field_type}->{$name}      eval "require $vpackage" or Carp::croak qq{<parse>: $vpackage: Can't load package: $@};
345              || $self->{option}->{field_type}->{':DEFAULT'};      return $vpackage->parse ($value,
346      eval "require $type" or Carp::croak ("_field_body: $type: $@");        -format   => $self->{option}->{format},
347      unless ($body) {        -field_ns => $option{ns},
348        $body = $type->new (-field_name => $name,        -field_name       => $name,
349          -format => $self->{option}->{format}      -header_default_charset     => $self->{option}->{header_default_charset},
350          , field_name => $name, format => $self->{option}->{format});      -header_default_charset_input       => $self->{option}->{header_default_charset_input},
351      } else {      -internal_charset_name      => $self->{option}->{internal_charset_name},
352        $body = $type->parse ($body, -field_name => $name,        -parse_all        => $self->{option}->{parse_all},
353          -format => $self->{option}->{format},      %vopt);
354           field_name => $name,format => $self->{option}->{format});    } else {
355      }      eval "require $vpackage" or Carp::croak qq{<parse>: $vpackage: Can't load package: $@};
356        return $vpackage->new (
357          -format   => $self->{option}->{format},
358          -field_ns => $option{ns},
359          -field_name       => $name,
360        -header_default_charset     => $self->{option}->{header_default_charset},
361        -header_default_charset_input       => $self->{option}->{header_default_charset_input},
362        -internal_charset_name      => $self->{option}->{internal_charset_name},
363          -parse_all        => $self->{option}->{parse_all},
364        %vopt);
365      }
366    }
367    
368    ## Defined for text/rfc822-headers
369    sub entity_header ($;$) {
370      my $self = shift;
371      my $new_header = shift;
372      if (ref $new_header) {
373        $self->{header} = $new_header;
374    }    }
375    $body;    $self->{header};
376  }  }
377    
378  =head2 $self->field_name_list ()  =head2 $self->field_name_list ()
# Line 394  returns ALL names.) Line 385  returns ALL names.)
385    
386  sub field_name_list ($) {  sub field_name_list ($) {
387    my $self = shift;    my $self = shift;
388    $self->_delete_empty_field ();    $self->_delete_empty ();
389    map {$_->{name}} @{$self->{field}};    map { $_->{name} . ':' . $_->{ns} } @{$self->{value}};
390    }
391    
392    sub namespace_ph_default ($;$) {
393      my $self = shift;
394      if (defined $_[0]) {
395        no strict 'refs';
396        $self->{option}->{ns_default_phuri} = $_[0];
397        $self->_ns_load_ph (${&_NS_uri2package ($self->{option}->{ns_default_phuri}).'::OPTION'}{namespace_phname});
398      }
399      $self->{option}->{ns_default_phuri};
400  }  }
401    
402  =item $hdr->add ($field-name, $field-body, [$name, $body, ...])  =item $hdr->add ($field-name, $field-body, [$name, $body, ...])
# Line 421  C<-validate>: Checks whether C<field-nam Line 422  C<-validate>: Checks whether C<field-nam
422    
423  =cut  =cut
424    
425  sub add ($%) {  ## [Name: Value] pair -> internal array item
426    my $self = shift;  ## $self->_value_to_arrayitem ($name => $value, {%options})
427    my %fields = @_;  ## or
428    my %option = %{$self->{option}};  ## $self->_value_to_arrayitem ($name => [$value, %value_options], {%options})
429    $option{parse} = defined wantarray unless defined $option{parse};  ##
430    for (grep {/^-/} keys %fields) {$option{substr ($_, 1)} = $fields{$_}}  ## Return: ((1 = success / 0 = failue), $full_name, $arrayitem)
431    my $body;  sub _value_to_arrayitem ($$$\%) {
432    for (grep {/^[^-]/} keys %fields) {    my $self = shift;
433      my $name = lc $_;  $body = $fields{$_};    my ($name, $value, $option) = @_;
434      $name =~ tr/_/-/ if $option{translate_underscore};    my $value_option = {};
435      Carp::croak "add: $name: invalid field-name"    if (ref $value eq 'ARRAY') {
436        if $option{validate} && $name =~ /$REG{UNSAFE_field_name}/;      ($value, %$value_option) = @$value;
437      $body = $self->_field_body ($body, $name) if $option{parse};    }
438      if ($option{prepend}) {    my $default_ns = $option->{ns_default_phuri};
439        unshift @{$self->{field}}, {name => $name, body => $body};    my $nsuri = $default_ns;
440      } else {    $name =~ s/^$REG{WSP}+//;  $name =~ s/$REG{WSP}+$//;
441        push @{$self->{field}}, {name => $name, body => $body};    
442      no strict 'refs';
443      if ($value_option->{ns}) {
444        $nsuri = $value_option->{ns};
445      } elsif ($option->{ns}) {
446        $nsuri = $option->{ns};
447      } elsif (($default_ns eq $self->{ns}->{phname2uri}->{'x-http'}
448           && $name =~ s/^([0-9]+)-//)
449        || ($name =~ s/^x-http-([0-9]+)-//i)) {     ## Numric namespace prefix, RFC 2774
450        my $prefix = 0+$1;
451        $nsuri = $self->{ns}->{number2uri}->{ $prefix };
452        unless ($nsuri) {
453          $self->{ns}->{number2uri}->{ $prefix } = 'urn:x-suika-fam-cx:msgpm:header:x-temp:'.$prefix;
454          $nsuri = $self->{ns}->{number2uri}->{ $prefix };
455        }
456      } elsif (
457        ${ &_NS_uri2package ($default_ns).'::OPTION' }{use_ph_namespace}
458        && (
459           ($name =~ s/^([Xx]-[A-Za-z0-9]+|[A-Za-z]*[A-WYZa-wyz0-9][A-Za-z0-9]*)-
460                        ([Xx]-[A-Za-z0-9]+|[A-Za-z0-9]*[A-WYZa-wyz0-9][A-Za-z0-9]*)-//x)
461         || $name =~ s/^([Xx]-[A-Za-z0-9]+|[A-Za-z0-9]*[A-WYZa-wyz0-9][A-Za-z0-9]*)-//
462        )) {
463        my ($prefix1, $prefix2) = ($1, $2);
464        my $original_prefix = $&;  my $one_prefix = 0;
465        unless ($prefix2) {
466          $prefix2 = $prefix1;
467          $prefix1 = $self->{ns}->{uri2phname}->{ $default_ns };
468          $one_prefix = 1;
469        }
470        my $prefix
471          = &{ ${ &_NS_uri2package ($nsuri).'::OPTION' }{n11n_prefix} }
472            ($self, &_NS_uri2package ($nsuri), $prefix1.'-'.$prefix2);
473        $self->_ns_load_ph ($prefix);
474        $nsuri = $self->{ns}->{phname2uri}->{ $prefix };
475        unless ($nsuri) {
476          $nsuri = $default_ns;
477          $prefix
478            = &{ ${ &_NS_uri2package ($nsuri).'::OPTION' }{n11n_prefix} }
479              ($self, &_NS_uri2package ($nsuri), $one_prefix? $prefix2:
480               $prefix1);
481          $self->_ns_load_ph ($prefix);
482          $nsuri = $self->{ns}->{phname2uri}->{ $prefix };
483          if ($nsuri) {
484            $name = $prefix2 . '-' . $name unless $one_prefix;
485          } else {
486            unless ($one_prefix) {
487              $prefix
488                = &{ ${ &_NS_uri2package ($nsuri).'::OPTION' }{n11n_prefix} }
489                  ($self, &_NS_uri2package ($nsuri),
490                   $self->{ns}->{uri2phname}->{ $default_ns } . '-' . $prefix1);
491              $self->_ns_load_ph ($prefix);
492              $nsuri = $self->{ns}->{phname2uri}->{ $prefix };
493              if ($nsuri) {
494                $name = $prefix2 . '-' . $name;
495              }
496            }
497            unless ($nsuri) {
498              $name = $original_prefix . $name;
499              $nsuri = $default_ns;
500            }
501          }
502      }      }
503    }    }
504    $body if $option{parse};    $name
505        = &{ ${ &_NS_uri2package ($nsuri).'::OPTION' }{n11n_name} }
506          ($self, &_NS_uri2package ($nsuri), $name);
507      Carp::croak "$name: invalid field-name"
508        if $option->{field_name_validation}
509          && $name =~ /$REG{ $option->{field_name_unsafe_rule} }/;
510      $value = $self->_parse_value ($name => $value, ns => $nsuri)
511        if $option->{parse} || $option->{parse_all};
512      $option->{parse} = 0;
513      (1, $name.':'.$nsuri => {name => $name, body => $value, ns => $nsuri});
514  }  }
515    *_add_hash_check = \&_value_to_arrayitem;
516    *_replace_hash_check = \&_value_to_arrayitem;
517    
518  =head2 $self->relace ($field_name, $field_body)  =head2 $self->relace ($field_name, $field_body)
519    
# Line 453  first one is used and the others are not Line 525  first one is used and the others are not
525    
526  =cut  =cut
527    
528  sub replace ($%) {  sub _replace_hash_shift ($\%$\%) {
529    my $self = shift;    shift; my $r = shift;  my $n = $_[0]->{name} . ':' . $_[0]->{ns};
530    my %params = @_;    if ($$r{$n}) {
531    my %option = %{$self->{option}};      my $d = $$r{$n};
532    $option{parse} = defined wantarray unless defined $option{parse};      delete $$r{$n};
533    for (grep {/^-/} keys %params) {$option{substr ($_, 1)} = $params{$_}}      return $d;
   my (%new_field);  
   for (grep {/^[^-]/} keys %params) {  
     my $name = lc $_;  
     $name =~ tr/_/-/ if $option{translate_underscore};  
     Carp::croak "replace: $name: invalid field-name"  
       if $option{validate} && $name =~ /$REG{UNSAFE_field_name}/;  
     $params{$_} = $self->_field_body ($params{$_}, $name) if $option{parse};  
     $new_field{$name} = $params{$_};  
   }  
   my $body = (%new_field)[-1];  
   for my $field (@{$self->{field}}) {  
     if (defined $new_field{$field->{name}}) {  
       $field->{body} = $new_field {$field->{name}};  
       $new_field{$field->{name}} = undef;  
     }  
   }  
   for (keys %new_field) {  
     push @{$self->{field}}, {name => $_, body => $new_field{$_}};  
534    }    }
535    $body if $option{parse};    undef;
536  }  }
537    
538  =head2 $self->delete ($field-name, [$name, ...])  =head2 $self->delete ($field-name, [$name, ...])
# Line 487  Deletes C<field> named as $field_name. Line 541  Deletes C<field> named as $field_name.
541    
542  =cut  =cut
543    
 sub delete ($@) {  
   my $self = shift;  
   my %delete;  for (@_) {$delete{lc $_} = 1}  
   for my $field (@{$self->{field}}) {  
     undef $field if $delete{$field->{name}};  
   }  
 }  
544    
545  =head2 $self->count ([$field_name])  =head2 $self->count ([$field_name])
546    
# Line 503  of fields.  (Same as $#$self+1) Line 550  of fields.  (Same as $#$self+1)
550    
551  =cut  =cut
552    
553  sub count ($;$) {  sub _count_by_name ($$\%) {
554    my $self = shift;    my $self = shift;
555    my ($name) = (lc shift);    my ($array, $option) = @_;
556    unless ($name) {    my $name = $self->_n11n_field_name ($$option{-name});
557      $self->_delete_empty_field ();    my @a = grep {$_->{name} eq $name} @{$self->{$array}};
558      return $#{$self->{field}}+1;    $#a + 1;
559    }  }
560    my $count = 0;  
561    for my $field (@{$self->{field}}) {  ## Delete empty items
562      if ($field->{name} eq $name) {  sub _delete_empty ($) {
563        $count++;    my $self = shift;
564      }    my $array = $self->{option}->{_HASH_NAME};
565    }    $self->{$array} = [grep {ref $_ && length $_->{name}} @{$self->{$array}}];
   $count;  
566  }  }
567    
568  =head2 $self->rename ($field-name, $new-name, [$old, $new,...])  =head2 $self->rename ($field-name, $new-name, [$old, $new,...])
# Line 532  sub rename ($%) { Line 578  sub rename ($%) {
578    for (grep {/^-/} keys %params) {$option{substr ($_, 1)} = $params{$_}}    for (grep {/^-/} keys %params) {$option{substr ($_, 1)} = $params{$_}}
579    my %new_name;    my %new_name;
580    for (grep {/^[^-]/} keys %params) {    for (grep {/^[^-]/} keys %params) {
581      my ($old => $new) = (lc $_ => lc $params{$_});      my ($old => $new)
582          = ($self->_n11n_field_name ($_) => $self->_n11n_field_name ($params{$_}));
583        $old =~ tr/_/-/ if $option{translate_underscore};
584      $new =~ tr/_/-/ if $option{translate_underscore};      $new =~ tr/_/-/ if $option{translate_underscore};
585      Carp::croak "rename: $new: invalid field-name"      Carp::croak "rename: $new: invalid field-name"
586        if $option{validate} && $new =~ /$REG{UNSAFE_field_name}/;        if $option{field_name_validation}
587            && $new =~ /$REG{$option{field_name_unsafe_rule}}/;
588      $new_name{$old} = $new;      $new_name{$old} = $new;
589    }    }
590    for my $field (@{$self->{field}}) {    for my $field (@{$self->{value}}) {
591      if (length $new_name{$field->{name}}) {      if (length $new_name{$field->{name}}) {
592        $field->{name} = $new_name{$field->{name}};        $field->{name} = $new_name{$field->{name}};
593      }      }
# Line 546  sub rename ($%) { Line 595  sub rename ($%) {
595    $self if defined wantarray;    $self if defined wantarray;
596  }  }
597    
598    sub resent_item ($$$;%) {
599      my $self = shift;
600      my ($index, $item_name, %option) = @_;
601      ## TODO: implement this
602    }
603    
604  =item $self->scan(\&doit)  =item $self->scan(\&doit)
605    
# Line 556  for each value. Line 610  for each value.
610    
611  =cut  =cut
612    
613  sub scan ($&) {  sub _scan_sort ($\@\%) {
614    my ($self, $sub) = @_;    no strict 'refs';
615    my $sort;    my $self = shift;
616    $sort = \&_header_cmp if $self->{option}->{sort} eq 'good-practice';    my ($array, $option) = @_;
617    $sort = {$a cmp $b} if $self->{option}->{sort} eq 'alphabetic';    my $nspack = &_NS_uri2package ($self->{option}->{ns_default_phuri});
618    my @field = @{$self->{field}};    my $sort = ${ $nspack.'::OPTION' }{field_sort};
619    if (ref $sort) {    if ($option->{field_sort} eq 'good-practice' && $sort->{'good-practice'}) {
620      @field = sort $sort @{$self->{field}};      return $self->Message::Header::Default::sort_good_practice ($array, $nspack, $option);
621    }    } elsif ($option->{field_sort} eq 'alphabetic' && $sort->{'alphabetic'}) {
622    for my $field (@field) {      ## TODO: How treat namespace prefix?
623      next if $field->{name} =~ /^_/;      return sort {$a->{name} cmp $b->{name}} @$array;
624      &$sub($field->{name} => $field->{body});    }
625    }    @$array;
626    }
627    
628    sub _n11n_field_name ($$) {
629      no strict 'refs';
630      my $self = shift;
631      my $s = shift;
632      $s =~ s/^$REG{WSP}+//; $s =~ s/$REG{WSP}+$//;
633      $s = lc $s unless ${&_NS_uri2package ($self->{option}->{ns_default_phuri}).'::OPTION'}{case_sensible};
634      $s;
635  }  }
636    
 # Compare function which makes it easy to sort headers in the  
 # recommended "Good Practice" order.  
 ## taken from HTTP::Header  
 sub _header_cmp  
 {  
   my ($na, $nb) = ($a->{name}, $b->{name});  
     # Unknown headers are assign a large value so that they are  
     # sorted last.  This also helps avoiding a warning from -w  
     # about comparing undefined values.  
     $header_order{$na} = 999 unless defined $header_order{$na};  
     $header_order{$nb} = 999 unless defined $header_order{$nb};  
   
     $header_order{$na} <=> $header_order{$nb} || $na cmp $nb;  
 }  
637    
638  =head2 $self->stringify ([%option])  =head2 $self->stringify ([%option])
639    
# Line 596  sub stringify ($;%) { Line 645  sub stringify ($;%) {
645    my $self = shift;    my $self = shift;
646    my %params = @_;    my %params = @_;
647    my %option = %{$self->{option}};    my %option = %{$self->{option}};
648      $option{format} = $params{-format} if $params{-format};
649      $self->_init_by_format ($option{format}, \%option)
650        if $self->{option}->{format} ne $option{format};
651    for (grep {/^-/} keys %params) {$option{substr ($_, 1)} = $params{$_}}    for (grep {/^-/} keys %params) {$option{substr ($_, 1)} = $params{$_}}
652      ## Fill required fields
653        my %exist;
654        for ($self->field_name_list) {$exist{$_} = 1}
655        &{ $option{hook_stringify_fill_fields} } ($self, \%exist, \%option);
656    my @ret;    my @ret;
657    if ($option{mail_from}) {    ## RFC 2774 numerical field name prefix
658      my $fromline = $self->field ('mail-from');    my %nprefix;
659      push @ret, 'From '.$fromline if $fromline;    {no strict 'refs';
660    }      %nprefix = reverse %{ $self->{ns}->{number2uri} };
661    $self->scan (sub {      my $i = (sort { $a <=> $b } keys %{ $self->{ns}->{number2uri} })[-1] + 1;
662      my ($name, $body) = (@_);      $i = 10 if $i < 10;
663      return unless length $name;      my $hprefix = ${ &_NS_uri2package
664      return if $option{mail_from} && $name eq 'mail-from';                         ($self->{ns}->{phname2uri}->{'x-http'})
665      return if !$option{output_bcc} && ($name eq 'bcc' || $name eq 'resent-bcc');                         .'::OPTION' } {namespace_phname_goodcase};
666      my $fbody;      for my $uri (keys %nprefix) {
667      if (ref $body) {        if ($nprefix{ $uri } < 10) {
668        $fbody = $body->stringify (-format => $option{format});          $nprefix{ $uri } = $i++;
669      } else {        }
670        $fbody = $body;        my $nsfs = $self->item ($uri, -by => 'http-ns-define');
671          for my $i (0..$nsfs->count-1) {
672            my $nsf = ($nsfs->value ($i))[0];
673            if ($nsf->value eq $uri) {
674              $nsf->replace (ns => $nprefix{ $uri });
675              $nprefix{ $uri } = $hprefix . '-' . $nprefix{ $uri };
676              last;
677            }
678          }
679      }      }
680      return unless length $fbody;    }
681      $fbody =~ s/\x0D(?=[^\x09\x0A\x20])/\x0D\x20/g;    my $_stringify = sub {
682      $fbody =~ s/\x0A(?=[^\x09\x20])/\x0A\x20/g;      no strict 'refs';
683      $name =~ s/((?:^|-)[a-z])/uc($1)/ge if $option{capitalize};        my ($name, $body, $nsuri) = ($_[1]->{name}, $_[1]->{body}, $_[1]->{ns});
684      push @ret, $name.': '.$self->fold ($fbody);        return unless length $name;
685    });        return if $option{output_mail_from} && $name eq 'mail-from';
686    my $ret = join ("\n", @ret);        $body = '' if !$option{output_bcc} && $name eq 'bcc';
687    $ret? $ret."\n": '';        my $nspackage = &_NS_uri2package ($nsuri);
688          my $oname;        ## Outputed field-name
689          my $prefix = $nprefix{ $nsuri }
690                    || ${$nspackage.'::OPTION'} {namespace_phname_goodcase}
691                    || $self->{ns}->{uri2phname}->{ $nsuri };
692          my $default_prefix = ${ &_NS_uri2package ($option{ns_default_phuri})
693                                  .'::OPTION'} {namespace_phname_goodcase};
694          $prefix = '' if $prefix eq $default_prefix;
695          $prefix =~ s/^\Q$default_prefix\E-//;
696          my $gc = ${$nspackage.'::OPTION'} {to_be_goodcase};
697          if (ref $gc) { $oname = &$gc ($self, $nspackage, $name, \%option) }
698          else { $oname = $name }
699          if ($prefix) { $oname = $prefix . '-' . $oname }
700          if ($option{format} =~ /uri-url-mailto/) {
701            return if (( ${$nspackage.'::OPTION'} {uri_mailto_safe}->{$name}
702                      || ${$nspackage.'::OPTION'} {uri_mailto_safe}->{':default'})
703                      < $option{uri_mailto_safe_level});
704            if ($name eq 'to') {
705              $body = $self->field ('to', -new_item_unless_exist => 0);
706              if (ref $body && $body->have_group) {
707                #
708              } elsif (ref $body && $body->count > 1) {
709                $body = $body->clone;
710                $body->delete ({-by => 'index'}, 0);
711              }
712            }
713          }
714          my $fbody;
715          if (ref $body) {
716            $fbody = $body->stringify (-format => $option{format});
717          } else {
718            $fbody = $body;
719          }
720          unless (${$nspackage.'::OPTION'} {field}->{$name}->{empty_body}) {
721            return unless length $fbody;
722          }
723          unless ($option{linebreak_strict}) {
724            ## bare \x0D and bare \x0A are unsafe
725            $fbody =~ s/\x0D(?=[^\x09\x0A\x20])/\x0D\x20/g;
726            $fbody =~ s/\x0A(?=[^\x09\x20])/\x0A\x20/g;
727          } else {
728            $fbody =~ s/\x0D\x0A(?=[^\x09\x20])/\x0D\x0A\x20/g;
729          }
730          if ($option{use_folding}) {
731            if (ref $option{output_folding}) {
732              $fbody = &{$option{output_folding}} ($self, $fbody,
733                -initial_length => length ($oname) +2);
734            } elsif ($option{output_folding}) {
735              $fbody = $self->_fold ($fbody, -initial_length => length ($oname) +2);
736            }
737          }
738          push @ret, sprintf $option{field_format_pattern}, $oname, $fbody;
739        };
740      if ($option{format} =~ /uri-url-mailto/) {
741        if ($option{format} =~ /uri-url-mailto-to/) {
742          my $to = $self->field ('to', -new_item_unless_exist => 0);
743          if ($to) {
744            unless ($to->have_group) {
745              my $fbody = $to->stringify (-format => $option{format}, -max => 1);
746              return &{$option{output_folding}} ($self, $fbody);
747            }
748          }
749          '';
750        } elsif ($option{format} =~ /uri-url-mailto-rfc1738/) {
751          my $to = $self->field ('to', -new_item_unless_exist => 0);
752          if ($to) {
753            my $fbody = $to->addr_spec (-format => $option{format});
754            return &{$option{output_folding}} ($self, $fbody);
755          }
756          '';
757        } else {
758          $self->scan ($_stringify);
759          my $ret = join ('&', @ret);
760          $ret;
761        }
762      } else {
763        if ($option{output_mail_from}) {
764          my $fromline = $self->field ('mail-from', -new_item_unless_exist => 0);
765          push @ret, 'From '.$fromline if $fromline;
766        }
767        $self->scan ($_stringify);
768        my $ret = join ("\x0D\x0A", @ret);
769        $ret? $ret."\x0D\x0A": '';
770      }
771  }  }
772  *as_string = \&stringify;  *as_string = \&stringify;
773    
# Line 636  sub option ($@) { Line 783  sub option ($@) {
783      return $self->{option}->{ shift (@_) };      return $self->{option}->{ shift (@_) };
784    }    }
785    while (my ($name, $value) = splice (@_, 0, 2)) {    while (my ($name, $value) = splice (@_, 0, 2)) {
     $name =~ s/^-//;  
786      $self->{option}->{$name} = $value;      $self->{option}->{$name} = $value;
787      if ($name eq 'format') {      if ($name eq 'format') {
788        for my $f (@{$self->{field}}) {        for my $f (@{$self->{field}}) {
# Line 648  sub option ($@) { Line 794  sub option ($@) {
794    }    }
795  }  }
796    
797  sub field_type ($$;$) {  sub field_type ($@) {shift->SUPER::value_type (@_)}
798    
799    ## $self->_fold ($string, %option = (-max, -initial_length(for field-name)) )
800    sub _fold ($$;%) {
801    my $self = shift;    my $self = shift;
802    my $field_name = shift;    my $string = shift;
803    my $new_field_type = shift;    my %option = @_;
804    if ($new_field_type) {    my $max = $self->{option}->{line_length_max};
805      $self->{option}->{field_type}->{$field_name} = $new_field_type;    $max = 20 if $max < 20;
806    }    
807    $self->{option}->{field_type}->{$field_name}    my $l = $option{-initial_length} || 0;
808    || $self->{option}->{field_type}->{':DEFAULT'};    $l += length $1 if $string =~ /^([^\x09\x20]+)/;
809      $string =~ s{([\x09\x20][^\x09\x20]+)}{
810        my $s = $1;
811        if (($l + length $s) > $max) {
812          $s = "\x0D\x0A\x20" . $s;
813          $l = 1 + length $s;
814        } else { $l += length $s }
815        $s;
816      }gex;
817      $string;
818  }  }
819    
820  sub _delete_empty_field ($) {  sub _ns_load_ph ($$) {
821    my $self = shift;    my $self = shift;
822    my @ret;    my $name = shift;     ## normalized prefix (without HYPHEN-MINUS)
823    for my $field (@{$self->{field}}) {    return if $self->{ns}->{phname2uri}->{$name};
824      push @ret, $field if $field->{name};    $self->{ns}->{phname2uri}->{$name} = $NS_phname2uri{$name};
825    }    $self->{ns}->{uri2phname}->{ $self->{ns}->{phname2uri}->{$name} } = $name;
826    $self->{field} = \@ret;  }
827    $self;  
828    sub _ns_associate_numerical_prefix ($) {
829      my $self = shift;
830      $self->scan (sub {shift;
831        my $f = shift;  return unless $f->{name};
832        if ($f->{ns} eq $self->{ns}->{phname2uri}->{'x-http'}
833         || $f->{ns} eq $self->{ns}->{phname2uri}->{'x-http-c'}) {
834          my $fn = $f->{name};
835          if ($fn eq 'opt' || $fn eq 'man') {
836            $f->{body} = $self->_parse_value ($fn => $f->{body}, ns => $f->{ns});
837            for ($f->{body}->value (0..$f->{body}->count-1)) {
838              my ($nsuri, $number) = ($_->value, $_->item ('ns'));
839              if ($number && $nsuri) {
840                $self->{ns}->{number2uri}->{ $number } = $nsuri;
841              }
842            }
843          }
844        }
845      });
846      $self->scan (sub {shift;
847        my $f = shift;
848        if ($f->{ns} =~ /urn:x-suika-fam-cx:msgpm:header:x-temp:([0-9]+)$/ && $self->{ns}->{number2uri}->{ $1 }) {
849          $f->{ns} = $self->{ns}->{number2uri}->{ $1 };
850        }
851      });
852  }  }
853    
854  sub fold ($$;$) {  ## $package_name = Message::Header::_NS_uri2phpackage ($nsuri)
855    my $self = shift;  ## (For internal use of Message::* modules)
856    my $string = shift;  sub _NS_uri2phpackage ($) {
857    my $len = shift || $self->{option}->{fold_length};    $NS_uri2phpackage{$_[0]}
858    $len = 60 if $len < 60;    || $NS_uri2phpackage{$Message::Header::Default::OPTION{namespace_uri}};
859      }
860    ## This code is taken from Mail::Header 1.43 in MailTools,  sub _NS_uri2package ($) {
861    ## by Graham Barr (Maintained by Mark Overmeer <mailtools@overmeer.net>).    $NS_uri2package{$_[0]}
862    my $max = int($len - 5);         # 4 for leading spcs + 1 for [\,\;]    || $NS_uri2phpackage{$_[0]}
863    my $min = int($len * 4 / 5) - 4;    || $NS_uri2phpackage{$Message::Header::Default::OPTION{namespace_uri}};
   my $ml = $len;  
     
   if (length($string) > $ml) {  
      #Split the line up  
      # first bias towards splitting at a , or a ; >4/5 along the line  
      # next split a whitespace  
      # else we are looking at a single word and probably don't want to split  
      my $x = "";  
      $x .= "$1\n "  
        while($string =~ s/^$REG{WSP}*(  
                           [^"]{$min,$max}?[\,\;]  
                           |[^"]{1,$max}$REG{WSP}  
                           |[^\s"]*(?:"[^"]*"[^\s"]*)+$REG{WSP}  
                           |[^\s"]+$REG{WSP}  
                           )  
                         //x);  
      $x .= $string;  
      $string = $x;  
      $string =~ s/(\A$REG{WSP}+|$REG{WSP}+\Z)//sog;  
      $string =~ s/\s+\n/\n/sog;  
   }  
   $string;  
864  }  }
865    
866  =head2 $self->clone ()  =head2 $self->clone ()
# Line 709  Returns a copy of Message::Header object Line 869  Returns a copy of Message::Header object
869    
870  =cut  =cut
871    
872  sub clone ($) {  ## Inhreited
   my $self = shift;  
   my $clone = new Message::Header;  
   for my $name (%{$self->{option}}) {  
     if (ref $self->{option}->{$name} eq 'HASH') {  
       $clone->{option}->{$name} = {%{$self->{option}->{$name}}};  
     } elsif (ref $self->{option}->{$name} eq 'ARRAY') {  
       $clone->{option}->{$name} = [@{$self->{option}->{$name}}];  
     } else {  
       $clone->{option}->{$name} = $self->{option}->{$name};  
     }  
   }  
   for (@{$self->{field}}) {  
     $clone->add ($_->{name}, scalar $_->{body});  
   }  
   $clone;  
 }  
873    
874  =head1 NOTE  =head1 NOTE
875    
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