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revision 1.11 by wakaba, Tue Mar 26 15:19:53 2002 UTC revision 1.35 by wakaba, Mon Jul 8 12:39:39 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 %DEFAULT);  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    require Message::Field::Structured;     ## This may seem silly:-)
13    push @ISA, qw(Message::Field::Structured);
14    
15    %REG = %Message::Util::REG;
16            $REG{M_field} = qr/^([^\x3A]+):$REG{FWS}([\x00-\xFF]*)$/;
17            $REG{M_fromline} = qr/^\x3E?From$REG{WSP}+([\x00-\xFF]*)$/;
18            $REG{ftext} = qr/[\x21-\x39\x3B-\x7E]+/;        ## [2]822
19            $REG{NON_ftext} = qr/[^\x21-\x39\x3B-\x7E]/;    ## [2]822
20            $REG{NON_ftext_usefor} = qr/[^0-9A-Za-z-]/;     ## name-character
21            $REG{NON_ftext_http} = $REG{NON_http_token};
22    
23    ## Namespace support
24            our %NS_phname2uri;     ## PH-namespace name -> namespace URI
25            our %NS_uri2package;    ## namespace URI -> Package name
26            our %NS_uri2phpackage;  ## namespace URI -> PH-Package name
27            require Message::Header::Default;       ## Default namespace
28    
29    ## Initialize of this class -- called by constructors
30    %DEFAULT = (
31        -_HASH_NAME => 'value',
32        -_METHODS   => [qw|field field_exist field_type add replace count delete subject id is|],
33        -_MEMBERS   => [qw|value|],
34        -_VALTYPE_DEFAULT   => ':default',
35        -by => 'name',
36        -field_format_pattern       => '%s: %s',
37        -field_name_case_sensible   => 0,
38        -field_name_unsafe_rule     => 'NON_ftext',
39        -field_name_validation      => 0,
40        -field_sort => 0,
41        -format     => 'mail-rfc2822',
42        -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  use overload '@{}' => sub {shift->_delete_empty_field()->{field}},  ## taken from L<HTTP::Header>
61               '""' => sub {shift->stringify};  # "Good Practice" order of HTTP message headers:
62    #    - General-Headers
63    #    - Request-Headers
64    #    - Response-Headers
65    #    - Entity-Headers
66    # (From draft-ietf-http-v11-spec-rev-01, Nov 21, 1997)
67    my @header_order = qw(
68      mail-from x-envelope-from relay-version path status
69    
70       cache-control connection date pragma transfer-encoding upgrade trailer via
71    
72       accept accept-charset accept-encoding accept-language
73       authorization expect from host
74       if-modified-since if-match if-none-match if-range if-unmodified-since
75       max-forwards proxy-authorization range referer te user-agent
76    
77       accept-ranges age location proxy-authenticate retry-after server vary
78       warning www-authenticate
79    
80       mime-version
81       allow content-base content-encoding content-language content-length
82       content-location content-md5 content-range content-type
83       etag expires last-modified content-style-type content-script-type
84       link
85    
86  $REG{WSP}     = qr/[\x09\x20]/;    xref
87  $REG{FWS}     = qr/[\x09\x20]*/;  );
88  $REG{M_field} = qr/^([^\x3A]+):$REG{FWS}([\x00-\xFF]*)$/;  my %header_order;
 $REG{M_fromline} = qr/^\x3E?From$REG{WSP}+([\x00-\xFF]*)$/;  
 $REG{UNSAFE_field_name} = qr/[\x00-\x20\x3A\x7F-\xFF]/;  
89    
90  =head2 options  =head1 CONSTRUCTORS
91    
92  These options can be getten/set by C<get_option>/C<set_option>  The following methods construct new C<Message::Header> objects:
 method.  
93    
94  =head3 capitalize = 0/1  =over 4
95    
96  (First character of) C<field-name> is capitalized  =cut
97  when C<stringify>.  (Default = 1)  
98    sub _init ($;%) {
99      my $self = shift;
100      my %options = @_;
101      my $DEFAULT = Message::Util::make_clone (\%DEFAULT);
102      $self->SUPER::_init (%$DEFAULT, %options);
103      $self->{value} = [];
104      $self->_ns_load_ph ('default');
105      $self->_ns_load_ph ('x-rfc822');
106      $self->_ns_load_ph ('x-http');
107      $self->{option}->{ns_default_phuri} = $self->{ns}->{phname2uri}->{'x-rfc822'}
108        unless $self->{option}->{ns_default_phuri};
109      
110      ## For text/rfc822-headers
111      if (ref $options{entity_header}) {
112        $self->{entity_header} = $options{entity_header};
113        delete $options{entity_header};
114      }
115      my @new_fields = ();
116      for my $name (keys %options) {
117        unless (substr ($name, 0, 1) eq '-') {
118          push @new_fields, ($name => $options{$name});
119        }
120      }
121      &{ $self->{option}->{hook_init_fill_options} } ($self, $self->{option});
122      $self->_init_by_format ($self->{option}->{format}, $self->{option});
123      # Make alternative representations of @header_order.  This is used
124      # for sorting.
125      my $i = 1;
126      for (@header_order) {
127          $header_order{$_} = $i++ unless $header_order{$_};
128      }
129      
130      $self->add (@new_fields, -parse => $self->{option}->{parse_all})
131        if $#new_fields > -1;
132    }
133    
134    sub _init_by_format ($$\%) {
135      my $self = shift;
136      my ($format, $option) = @_;
137      return if $format eq $option->{format};
138      if ($format =~ /http/) {
139        $option->{ns_default_phuri} = $self->{ns}->{phname2uri}->{'x-http'};
140        if ($format =~ /cgi/) {
141          unshift @header_order, qw(content-type location);
142          $option->{field_sort} = 'good-practice';
143          $option->{use_folding} = 0;
144        } else {
145          $option->{field_sort} = 'good-practice';
146        }
147      } elsif ($format =~ /mail|news/) {    ## RFC 822
148        $option->{ns_default_phuri} = $self->{ns}->{phname2uri}->{'x-rfc822'};
149      }
150      if ($format =~ /uri-url-mailto/) {
151        $option->{output_bcc} = 0;
152        $option->{field_format_pattern} = '%s=%s';
153        $option->{output_folding} = sub {
154          $_[1] =~ s/([^:@+\$A-Za-z0-9\-_.!~*])/sprintf('%%%02X', ord $1)/ge;
155          $_[1];
156        };  ## Yes, this is not folding!
157      }
158    }
159    
160  =head3 fold_length = numeric value  =item $msg = Message::Header->new ([%initial-fields/options])
161    
162  Length of line used to fold.  (Default = 70)  Constructs a new C<Message::Headers> object.  You might pass some initial
163    C<field-name>-C<field-body> pairs and/or options as parameters to the constructor.
164    
165  =head3 mail_from = 0/1  Example:
166    
167  Outputs "From " line (known as Un*x From, Mail-From, and so on)   $hdr = new Message::Headers
168  when C<stringify>.  (Default = 0)          Date         => 'Thu, 03 Feb 1994 00:00:00 +0000',
169            Content_Type => 'text/html',
170            Content_Location => 'http://www.foo.example/',
171            -format => 'mail-rfc2822'       ## not to be header field
172            ;
173    
174  =cut  =cut
175    
176  %DEFAULT = (  ## Inherited
   capitalize    => 1,  
   fold_length   => 70,  
   field_type    => {':DEFAULT' => 'Message::Field::Unstructured'},  
   mail_from     => -1,  
   output_bcc    => -1,  
   parse_all     => -1,  
 );  
 my @field_type_Structured = qw(cancel-lock  
   importance mime-version path precedence x-cite  
   x-face x-mail-count x-msmail-priority x-priority x-uidl xref);  
 for (@field_type_Structured)  
   {$DEFAULT{field_type}->{$_} = 'Message::Field::Structured'}  
 my @field_type_Address = qw(approved bcc cc delivered-to disposition-notification-to  
   envelope-to  
   errors-to fcc from mail-followup-to mail-followup-cc mail-from reply-to resent-bcc  
   resent-cc resent-to resent-from resent-sender return-path  
   return-receipt-to sender to x-approved x-beenthere  
   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);  
 for (@field_type_Address)  
   {$DEFAULT{field_type}->{$_} = 'Message::Field::Address'}  
 my @field_type_Date = qw(date date-received delivery-date expires  
   expire-date nntp-posting-date posted reply-by resent-date x-tcup-date);  
 for (@field_type_Date)  
   {$DEFAULT{field_type}->{$_} = 'Message::Field::Date'}  
 my @field_type_MsgID = qw(content-id in-reply-to message-id  
   references resent-message-id see-also supersedes);  
 for (@field_type_MsgID)  
   {$DEFAULT{field_type}->{$_} = 'Message::Field::MsgID'}  
 for (qw(received x-received))  
   {$DEFAULT{field_type}->{$_} = 'Message::Field::Received'}  
 $DEFAULT{field_type}->{'content-type'} = 'Message::Field::ContentType';  
 $DEFAULT{field_type}->{'content-disposition'} = 'Message::Field::ContentDisposition';  
 for (qw(x-face-type))  
   {$DEFAULT{field_type}->{$_} = 'Message::Field::ValueParams'}  
 for (qw(accept accept-charset accept-encoding accept-language  
   content-language  
   content-transfer-encoding encrypted followup-to keywords newsgroups  
   x-brother x-daughter x-respect x-moe x-syster x-wife))  
   {$DEFAULT{field_type}->{$_} = 'Message::Field::CSV'}  
 my @field_type_URI = qw(list-archive list-help list-owner  
   list-post list-subscribe list-unsubscribe uri url x-home-page x-http_referer  
   x-info x-pgp-key x-ml-url x-uri x-url x-web);  
 for (@field_type_URI)  
   {$DEFAULT{field_type}->{$_} = 'Message::Field::Structured'}  
 for (qw(list-id))  
   {$DEFAULT{field_type}->{$_} = 'Message::Field::Structured'}  
 for (qw(subject title x-nsubject))  
   {$DEFAULT{field_type}->{$_} = 'Message::Field::Subject'}  
 for (qw(list-software user-agent server))  
   {$DEFAULT{field_type}->{$_} = 'Message::Field::UA'}  
177    
178  =head2 Message::Header->new ([%option])  =item $msg = Message::Header->parse ($header, [%initial-fields/options])
179    
180  Returns new Message::Header instance.  Some options can be  Parses given C<header> and constructs a new C<Message::Headers>
181  specified as hash.  object.  You might pass some additional C<field-name>-C<field-body> pairs
182    or/and initial options as parameters to the constructor.
183    
184  =cut  =cut
185    
186  sub new ($;%) {  sub parse ($$;%) {
187    my $class = shift;    my $class = shift;
188    my $self = bless {option => {@_}}, $class;    my $header = shift;
189    for (keys %DEFAULT) {$self->{option}->{$_} ||= $DEFAULT{$_}}    my $self = bless {}, $class;
190      $self->_init (@_);
191      if ($self->{option}->{linebreak_strict}) {
192        $header =~ s/\x0D\x0A$REG{WSP}/\x20/gos if $self->{option}->{use_folding};
193      } else {
194        $header =~ s/\x0D?\x0A$REG{WSP}/\x20/gos if $self->{option}->{use_folding};
195      }
196      my %option = (%{ $self->{option} });
197      $option{parse_all} = 0;
198      for my $field (split /\x0D?\x0A/, $header) {
199        if ($field =~ /$REG{M_fromline}/) {
200          my ($s,undef,$value) = $self->_value_to_arrayitem
201            ('mail-from' => $1, \%option);
202          push @{$self->{value}}, $value if $s;
203        } elsif ($field =~ /$REG{M_field}/) {
204          my ($name, $body) = ($1, $2);
205          $body =~ s/$REG{WSP}+$//;
206          my ($s,undef,$value) = $self->_value_to_arrayitem
207            ($name => $body, \%option);
208          push @{$self->{value}}, $value if $s;
209        } elsif (length $field) {
210          my ($s,undef,$value) = $self->_value_to_arrayitem
211            ('x-unknown' => $field, \%option);
212          push @{$self->{value}}, $value if $s;
213        }
214      }
215      $self->_ns_associate_numerical_prefix;        ## RFC 2774 namespace
216      for (@{ $self->{value} }) {
217        no strict 'refs';
218        $_->{name}
219          = &{ ${ &_NS_uri2package ($_->{ns}).'::OPTION' }{n11n_name} }
220          ($self, &_NS_uri2package ($_->{ns}), $_->{name});
221        $_->{body} = $self->_parse_value ($_->{name} => $_->{body}, ns => $_->{ns})
222          if $self->{option}->{parse_all};
223      }
224    $self;    $self;
225  }  }
226    
227  =head2 Message::Header->parse ($header, [%option])  =item $msg = Message::Header->parse_array (\@header, [%initial-fields/options])
228    
229  Parses given C<header> and return a new Message::Header  Parses given C<header> and constructs a new C<Message::Headers>
230  object.  Some options can be specified as hash.  object.  Same as C<Message::Header-E<lt>parse> but this method
231    is given an array reference.  You might pass some additional
232    C<field-name>-C<field-body> pairs or/and initial options
233    as parameters to the constructor.
234    
235  =cut  =cut
236    
237  sub parse ($$;%) {  sub parse_array ($\@;%) {
238    my $class = shift;    my $class = shift;
239    my $header = shift;    my $header = shift;
240    my $self = bless {option => {@_}}, $class;    Carp::croak "parse_array: first argument is not an array reference"
241    for (keys %DEFAULT) {$self->{option}->{$_} ||= $DEFAULT{$_}}      unless ref $header eq 'ARRAY';
242    $header =~ s/\x0D?\x0A$REG{WSP}+/\x20/gos;    ## unfold    my $self = bless {}, $class;
243    for my $field (split /\x0D?\x0A/, $header) {    $self->_init (@_);
244      while (1) {
245        my $field = shift @$header;
246        if ($self->{option}->{use_folding}) {
247          while (1) {
248            if ($$header[0] =~ /^$REG{WSP}/) {
249              $field .= shift @$header;
250            } else {last}
251          }
252        }
253        if ($self->{option}->{linebreak_strict}) {
254          $field =~ s/\x0D\x0A//g;
255        } else {
256          $field =~ tr/\x0D\x0A//d;
257        }
258        local $self->{option}->{parse} = $self->{option}->{parse_all};
259      if ($field =~ /$REG{M_fromline}/) {      if ($field =~ /$REG{M_fromline}/) {
260        my $body = $1;        my ($s,undef,$value) = $self->_value_to_arrayitem
261        $body = $self->_field_body ($body, 'mail-from')          ('mail-from' => $1, $self->{option});
262          if $self->{option}->{parse_all}>0;        push @{$self->{value}}, $value if $s;
       push @{$self->{field}}, {name => 'mail-from', body => $body};  
263      } elsif ($field =~ /$REG{M_field}/) {      } elsif ($field =~ /$REG{M_field}/) {
264        my ($name, $body) = (lc $1, $2);        my ($name, $body) = ($self->_n11n_field_name ($1), $2);
       $name =~ s/$REG{WSP}+$//;  
265        $body =~ s/$REG{WSP}+$//;        $body =~ s/$REG{WSP}+$//;
266        $body = $self->_field_body ($body, $name) if $self->{option}->{parse_all}>0;        my ($s,undef,$value) = $self->_value_to_arrayitem
267        push @{$self->{field}}, {name => $name, body => $body};          ($name => $body, $self->{option});
268          push @{$self->{value}}, $value if $s;
269        } elsif (length $field) {
270          my ($s,undef,$value) = $self->_value_to_arrayitem
271            ('x-unknown' => $field, $self->{option});
272          push @{$self->{value}}, $value if $s;
273      }      }
274        last if $#$header < 0;
275    }    }
276      $self->_ns_associate_numerical_prefix;        ## RFC 2774 namespace
277    $self;    $self;
278  }  }
279    
280    =back
281    
282    =head1 METHODS
283    
284  =head2 $self->field ($field_name)  =head2 $self->field ($field_name)
285    
286  Returns C<field-body> of given C<field-name>.  Returns C<field-body> of given C<field-name>.
# Line 150  context, only first one is returned.) Line 290  context, only first one is returned.)
290    
291  =cut  =cut
292    
293  sub field ($$) {  sub field ($@) {shift->SUPER::item (@_)}
294    sub field_exist ($@) {shift->SUPER::item_exist (@_)}
295    
296    ## item-by?, \$checked-item, {item-key => 1}, \%option
297    sub _item_match ($$\$\%\%) {
298    my $self = shift;    my $self = shift;
299    my $name = lc shift;    my ($by, $i, $list, $option) = @_;
300    my @ret;    return 0 unless ref $$i;  ## Already removed
301    for my $field (@{$self->{field}}) {    if ($by eq 'name') {
302      if ($field->{name} eq $name) {      my %o = %$option; #$o{parse} = 0;
303        unless (wantarray) {      my %l;
304          $field->{body} = $self->_field_body ($field->{body}, $name);      for (keys %$list) {
305          return $field->{body};        my ($s, undef, $v) = $self->_value_to_arrayitem ($_, '', \%o);
306          if ($s) {
307            $l{$v->{name} . ':' . ( $option->{ns} || $v->{ns} ) } = 1;
308        } else {        } else {
309          $field->{body} = $self->_field_body ($field->{body}, $name);          $l{$v->{name} .':'. ( $option->{ns} || $self->{option}->{ns_default_phuri} ) } = 1;
310          push @ret, $field->{body};        }
311        }
312        return 1 if $l{$$i->{name} . ':' . $$i->{ns}};
313      } elsif ($by eq 'ns') {
314        return 1 if $list->{ $$i->{ns} };
315      } elsif ($by eq 'http-ns-define') {
316        if ($$i->{ns} eq $self->{ns}->{phname2uri}->{'x-http'}
317         || $$i->{ns} eq $self->{ns}->{phname2uri}->{'x-http-c'}) {
318          my $n = $$i->{name};
319          if ($n eq 'opt' || $n eq 'c-opt' || $n eq 'man' || $n eq 'c-man') {
320            $option->{parse} = 0;
321            $$i->{body} = $self->_parse_value ($$i->{name} => $$i->{body}, ns => $$i->{ns});
322            for my $j (0..$$i->{body}->count-1) {
323              return 1 if $list->{ ($$i->{body}->value ($j))[0]->value };
324            }
325        }        }
326      }      }
327    }    }
328    if ($#ret < 0) {    0;
     return $self->add ($name);  
   }  
   @ret;  
329  }  }
330    *_delete_match = \&_item_match;
331    
332  sub field_exist ($$) {  ## Returns returned item value    \$item-value, \%option
333    my $self = shift;  sub _item_return_value ($\$\%) {
334    my $name = lc shift;    if (ref ${$_[1]}->{body}) {
335    my @ret;      ${$_[1]}->{body};
336    for my $field (@{$self->{field}}) {    } else {
337      return 1 if ($field->{name} eq $name);      ${$_[1]}->{body} = $_[0]->_parse_value (${$_[1]}->{name} => ${$_[1]}->{body},
338          ns => ${$_[1]}->{ns});
339        ${$_[1]}->{body};
340      }
341    }
342    *_add_return_value = \&_item_return_value;
343    *_replace_return_value = \&_item_return_value;
344    
345    ## Returns returned (new created) item value    $name, \%option
346    sub _item_new_value ($$\%) {
347      my $self = shift;
348      my ($name, $option) = @_;
349      if ($option->{by} eq 'http-ns-define') {
350        my $value = $self->_parse_value (opt => '', ns => $self->{ns}->{phname2uri}->{'x-http'});
351        ($value->value (0))[0]->value ($name);
352        {name => 'opt', body => $value, ns => $self->{ns}->{phname2uri}->{'x-http'}};
353      } else {
354        my ($s,undef,$value) = $self->_value_to_arrayitem
355            ($name => '', $option);
356        $s? $value: undef;
357    }    }
   0;  
358  }  }
359    
 =head2 $self->field_name ($index)  
   
 Returns C<field-name> of $index'th C<field>.  
   
 =head2 $self->field_body ($index)  
360    
 Returns C<field-body> of $index'th C<field>.  
   
 =cut  
361    
362  sub field_name ($$) {  ## $self->_parse_value ($type, $value, %options);
363    sub _parse_value ($$$;%) {
364    my $self = shift;    my $self = shift;
365    $self->{field}->[shift]->{name};    my $name = shift ;#|| $self->{option}->{_VALTYPE_DEFAULT};
366  }    my $value = shift;  return $value if ref $value;
367  sub field_body ($$) {    my %option = @_;
368    my $self = shift;    my $vtype; { no strict 'refs';
369    my $i = shift;      my $vt = ${&_NS_uri2package ($option{ns}).'::OPTION'}{value_type};
370    $self->{field}->[$i]->{body}      if (ref $vt) {
371     = $self->_field_body ($self->{field}->[$i]->{body}, $self->{field}->[$i]->{name});        $vtype = $vt->{$name} || $vt->{$self->{option}->{_VALTYPE_DEFAULT}};
372    $self->{field}->[$i]->{body};      }
373        ## For compatiblity.
374        unless (ref $vtype) { $vtype = $self->{option}->{value_type}->{$name}
375          || $self->{option}->{value_type}->{$self->{option}->{_VALTYPE_DEFAULT}} }
376      }
377      my $vpackage = $vtype->[0];
378      my %vopt = %{$vtype->[1]} if ref $vtype->[1];
379      if ($vpackage eq ':none:') {
380        return $value;
381      } elsif (defined $value) {
382        eval "require $vpackage" or Carp::croak qq{<parse>: $vpackage: Can't load package: $@};
383        return $vpackage->parse ($value,
384          -format   => $self->{option}->{format},
385          -field_ns => $option{ns},
386          -field_name       => $name,
387        -header_default_charset     => $self->{option}->{header_default_charset},
388        -header_default_charset_input       => $self->{option}->{header_default_charset_input},
389          -parse_all        => $self->{option}->{parse_all},
390        %vopt);
391      } else {
392        eval "require $vpackage" or Carp::croak qq{<parse>: $vpackage: Can't load package: $@};
393        return $vpackage->new (
394          -format   => $self->{option}->{format},
395          -field_ns => $option{ns},
396          -field_name       => $name,
397        -header_default_charset     => $self->{option}->{header_default_charset},
398        -header_default_charset_input       => $self->{option}->{header_default_charset_input},
399          -parse_all        => $self->{option}->{parse_all},
400        %vopt);
401      }
402  }  }
403    
404  sub _field_body ($$$) {  ## Defined for text/rfc822-headers
405    my $self = shift;  sub entity_header ($;$) {
406    my ($body, $name) = @_;    my $self = shift;
407    unless (ref $body) {    my $new_header = shift;
408      my $type = $self->{option}->{field_type}->{$name}    if (ref $new_header) {
409              || $self->{option}->{field_type}->{':DEFAULT'};      $self->{header} = $new_header;
     eval "require $type";  
     unless ($body) {  
       $body = $type->new (field_name => $name);  
     } else {  
       $body = $type->parse ($body, field_name => $name);  
     }  
410    }    }
411    $body;    $self->{header};
412  }  }
413    
414  =head2 $self->field_name_list ()  =head2 $self->field_name_list ()
# Line 229  returns ALL names.) Line 421  returns ALL names.)
421    
422  sub field_name_list ($) {  sub field_name_list ($) {
423    my $self = shift;    my $self = shift;
424    $self->_delete_empty_field ();    $self->_delete_empty ();
425    map {$_->{name}} @{$self->{field}};    map { $_->{name} . ':' . $_->{ns} } @{$self->{value}};
426  }  }
427    
428  =head2 $self->add ($field_name, $field_body)  sub namespace_ph_default ($;$) {
429      my $self = shift;
430      if (defined $_[0]) {
431        no strict 'refs';
432        $self->{option}->{ns_default_phuri} = $_[0];
433        $self->_ns_load_ph (${&_NS_uri2package ($self->{option}->{ns_default_phuri}).'::OPTION'}{namespace_phname});
434      }
435      $self->{option}->{ns_default_phuri};
436    }
437    
438    =item $hdr->add ($field-name, $field-body, [$name, $body, ...])
439    
440    Adds some field name/body pairs.  Even if there are
441    one or more fields named given C<$field-name>,
442    given name/body pairs are ADDed.  Use C<replace>
443    to remove same-name-fields.
444    
445    Instead of field name-body pair, you might pass some options.
446    Four options are available for this method.
447    
448    C<-parse>: Parses and validates C<field-body>, and returns
449    C<field-body> object.  (When multiple C<field-body>s are
450    added, returns only last one.)  (Default: C<defined wantarray>)
451    
452  Adds an new C<field>.  It is not checked whether  C<-prepend>: New fields are not appended,
453  the field which named $field_body is already exist or not.  but prepended to current fields.  (Default: C<0>)
454  If you don't want duplicated C<field>s, use C<replace> method.  
455    C<-translate-underscore>: Do C<field-name> =~ tr/_/-/.  (Default: C<1>)
456    
457    C<-validate>: Checks whether C<field-name> is valid or not.
458    
459  =cut  =cut
460    
461  sub add ($$;$%) {  ## [Name: Value] pair -> internal array item
462    ## $self->_value_to_arrayitem ($name => $value, {%options})
463    ## or
464    ## $self->_value_to_arrayitem ($name => [$value, %value_options], {%options})
465    ##
466    ## Return: ((1 = success / 0 = failue), $full_name, $arrayitem)
467    sub _value_to_arrayitem ($$$\%) {
468    my $self = shift;    my $self = shift;
469    my ($name, $body) = (lc shift, shift);    my ($name, $value, $option) = @_;
470    my %option = @_;    my $value_option = {};
471    return 0 if $name =~ /$REG{UNSAFE_field_name}/;    if (ref $value eq 'ARRAY') {
472    $body = $self->_field_body ($body, $name);      ($value, %$value_option) = @$value;
473    if ($option{prepend}) {    }
474      unshift @{$self->{field}}, {name => $name, body => $body};    my $default_ns = $option->{ns_default_phuri};
475    } else {    my $nsuri = $default_ns;
476      push @{$self->{field}}, {name => $name, body => $body};    $name =~ s/^$REG{WSP}+//;  $name =~ s/$REG{WSP}+$//;
477      
478      no strict 'refs';
479      if ($value_option->{ns}) {
480        $nsuri = $value_option->{ns};
481      } elsif ($option->{ns}) {
482        $nsuri = $option->{ns};
483      } elsif (($default_ns eq $self->{ns}->{uri2phname}->{'x-http'}
484           && $name =~ s/^([0-9]+)-//)
485        || ($name =~ s/^x-http-([0-9]+)-//i)) {     ## Numric namespace prefix, RFC 2774
486        my $prefix = 0+$1;
487        $nsuri = $self->{ns}->{number2uri}->{ $prefix };
488        unless ($nsuri) {
489          $self->{ns}->{number2uri}->{ $prefix } = 'urn:x-suika-fam-cx:msgpm:header:x-temp:'.$prefix;
490          $nsuri = $self->{ns}->{number2uri}->{ $prefix };
491        }
492      } elsif (
493        ${ &_NS_uri2package ($default_ns).'::OPTION' }{use_ph_namespace}
494        && (
495           ($name =~ s/^([Xx]-[A-Za-z0-9]+|[A-Za-z]*[A-WYZa-wyz0-9][A-Za-z0-9]*)-
496                        ([Xx]-[A-Za-z0-9]+|[A-Za-z0-9]*[A-WYZa-wyz0-9][A-Za-z0-9]*)-//x)
497         || $name =~ s/^([Xx]-[A-Za-z0-9]+|[A-Za-z0-9]*[A-WYZa-wyz0-9][A-Za-z0-9]*)-//
498        )) {
499        my ($prefix1, $prefix2) = ($1, $2);
500        my $original_prefix = $&;  my $one_prefix = 0;
501        unless ($prefix2) {
502          $prefix2 = $prefix1;
503          $prefix1 = $self->{ns}->{uri2phname}->{ $default_ns };
504          $one_prefix = 1;
505        }
506        my $prefix
507          = &{ ${ &_NS_uri2package ($nsuri).'::OPTION' }{n11n_prefix} }
508            ($self, &_NS_uri2package ($nsuri), $prefix1.'-'.$prefix2);
509        $self->_ns_load_ph ($prefix);
510        $nsuri = $self->{ns}->{phname2uri}->{ $prefix };
511        unless ($nsuri) {
512          $nsuri = $default_ns;
513          $prefix
514            = &{ ${ &_NS_uri2package ($nsuri).'::OPTION' }{n11n_prefix} }
515              ($self, &_NS_uri2package ($nsuri), $one_prefix? $prefix2: $prefix1);
516          $self->_ns_load_ph ($prefix);
517          $nsuri = $self->{ns}->{phname2uri}->{ $prefix };
518          if ($nsuri) {
519            $name = $prefix2 . '-' . $name unless $one_prefix;
520          } else {
521            $name = $original_prefix . $name;
522            $nsuri = $default_ns;
523          }
524        }
525    }    }
526    $body;    $name
527        = &{ ${ &_NS_uri2package ($nsuri).'::OPTION' }{n11n_name} }
528          ($self, &_NS_uri2package ($nsuri), $name);
529      Carp::croak "$name: invalid field-name"
530        if $option->{field_name_validation}
531          && $name =~ /$REG{ $option->{field_name_unsafe_rule} }/;
532      $value = $self->_parse_value ($name => $value, ns => $nsuri)
533        if $option->{parse} || $option->{parse_all};
534      $option->{parse} = 0;
535      (1, $name.':'.$nsuri => {name => $name, body => $value, ns => $nsuri});
536  }  }
537    *_add_hash_check = \&_value_to_arrayitem;
538    *_replace_hash_check = \&_value_to_arrayitem;
539    
540  =head2 $self->relace ($field_name, $field_body)  =head2 $self->relace ($field_name, $field_body)
541    
# Line 265  first one is used and the others are not Line 547  first one is used and the others are not
547    
548  =cut  =cut
549    
550  sub replace ($$$) {  sub _replace_hash_shift ($\%$\%) {
551    my $self = shift;    shift; my $r = shift;  my $n = $_[0]->{name} . ':' . $_[0]->{ns};
552    my ($name, $body) = (lc shift, shift);    if ($$r{$n}) {
553    return 0 if $name =~ /$REG{UNSAFE_field_name}/;      my $d = $$r{$n};
554    $body = $self->_field_body ($body, $name);      delete $$r{$n};
555    for my $field (@{$self->{field}}) {      return $d;
     if ($field->{name} eq $name) {  
       $field->{body} = $body;  
       return $body;  
     }  
556    }    }
557    push @{$self->{field}}, {name => $name, body => $body};    undef;
   $body;  
558  }  }
559    
560  =head2 $self->delete ($field_name, [$index])  =head2 $self->delete ($field-name, [$name, ...])
561    
562  Deletes C<field> named as $field_name.  Deletes C<field> named as $field_name.
 If $index is specified, only $index'th C<field> is deleted.  
 If not, ($index == 0), all C<field>s that have the C<field-name>  
 $field_name are deleted.  
563    
564  =cut  =cut
565    
 sub delete ($$;$) {  
   my $self = shift;  
   my ($name, $index) = (lc shift, shift);  
   my $i = 0;  
   for my $field (@{$self->{field}}) {  
     if ($field->{name} eq $name) {  
       $i++;  
       if ($index == 0 || $i == $index) {  
         undef $field;  
         return $self if $i == $index;  
       }  
     }  
   }  
   $self;  
 }  
566    
567  =head2 $self->count ([$field_name])  =head2 $self->count ([$field_name])
568    
# Line 313  of fields.  (Same as $#$self+1) Line 572  of fields.  (Same as $#$self+1)
572    
573  =cut  =cut
574    
575  sub count ($;$) {  sub _count_by_name ($$\%) {
576    my $self = shift;    my $self = shift;
577    my ($name) = (lc shift);    my ($array, $option) = @_;
578    unless ($name) {    my $name = $self->_n11n_field_name ($$option{-name});
579      $self->_delete_empty_field ();    my @a = grep {$_->{name} eq $name} @{$self->{$array}};
580      return $#{$self->{field}}+1;    $#a + 1;
   }  
   my $count = 0;  
   for my $field (@{$self->{field}}) {  
     if ($field->{name} eq $name) {  
       $count++;  
     }  
   }  
   $count;  
581  }  }
582    
583  =head2 $self->stringify ([%option])  ## Delete empty items
584    sub _delete_empty ($) {
585      my $self = shift;
586      my $array = $self->{option}->{_HASH_NAME};
587      $self->{$array} = [grep {ref $_ && length $_->{name}} @{$self->{$array}}];
588    }
589    
590  Returns the C<header> as a string.  =head2 $self->rename ($field-name, $new-name, [$old, $new,...])
591    
592    Renames C<$field-name> as C<$new-name>.
593    
594  =cut  =cut
595    
596  sub stringify ($;%) {  sub rename ($%) {
597    my $self = shift;    my $self = shift;
598    my %OPT = @_;    my %params = @_;
599    my @ret;    my %option = %{$self->{option}};
600    $OPT{capitalize} ||= $self->{option}->{capitalize};    for (grep {/^-/} keys %params) {$option{substr ($_, 1)} = $params{$_}}
601    $OPT{mail_from} ||= $self->{option}->{mail_from};    my %new_name;
602    $OPT{output_bcc} ||= $self->{option}->{output_bcc};    for (grep {/^[^-]/} keys %params) {
603    push @ret, 'From '.$self->field ('mail-from') if $OPT{mail_from}>0;      my ($old => $new)
604    for my $field (@{$self->{field}}) {        = ($self->_n11n_field_name ($_) => $self->_n11n_field_name ($params{$_}));
605      my $name = $field->{name};      $old =~ tr/_/-/ if $option{translate_underscore};
606      next unless $name;      $new =~ tr/_/-/ if $option{translate_underscore};
607      next if $OPT{mail_from}<0 && $name eq 'mail-from';      Carp::croak "rename: $new: invalid field-name"
608      next if $OPT{output_bcc}<0 && ($name eq 'bcc' || $name eq 'resent-bcc');        if $option{field_name_validation}
609      my $fbody = scalar $field->{body};          && $new =~ /$REG{$option{field_name_unsafe_rule}}/;
610      next unless $fbody;      $new_name{$old} = $new;
     $fbody =~ s/\x0D([^\x09\x0A\x20])/\x0D\x20$1/g;  
     $fbody =~ s/\x0A([^\x09\x20])/\x0A\x20$1/g;  
     $name =~ s/((?:^|-)[a-z])/uc($1)/ge if $OPT{capitalize};  
     push @ret, $name.': '.$self->fold ($fbody);  
611    }    }
612    my $ret = join ("\n", @ret);    for my $field (@{$self->{value}}) {
613    $ret? $ret."\n": "";      if (length $new_name{$field->{name}}) {
614          $field->{name} = $new_name{$field->{name}};
615        }
616      }
617      $self if defined wantarray;
618  }  }
619    
 =head2 $self->get_option ($option_name)  
   
 Returns value of the option.  
620    
621  =head2 $self->set_option ($option_name, $option_value)  =item $self->scan(\&doit)
622    
623  Set new value of the option.  Apply a subroutine to each header field in turn.  The callback routine is
624    called with two parameters; the name of the field and a single value.
625    If the header has more than one value, then the routine is called once
626    for each value.
627    
628  =cut  =cut
629    
630  sub get_option ($$) {  sub _scan_sort ($\@\%) {
631    my $self = shift;    my $self = shift;
632    my ($name) = @_;    my ($array, $option) = @_;
633    $self->{option}->{$name};    my $sort;
634      $sort = \&_header_cmp if $option->{field_sort} eq 'good-practice';
635      $sort = {$a cmp $b} if $option->{field_sort} eq 'alphabetic';
636      return ( sort $sort @$array ) if ref $sort;
637      @$array;
638  }  }
639  sub set_option ($$$) {  
640    sub _n11n_field_name ($$) {
641      no strict 'refs';
642    my $self = shift;    my $self = shift;
643    my ($name, $value) = @_;    my $s = shift;
644    $self->{option}->{$name} = $value;    $s =~ s/^$REG{WSP}+//; $s =~ s/$REG{WSP}+$//;
645    $self;    $s = lc $s unless ${&_NS_uri2package ($self->{option}->{ns_default_phuri}).'::OPTION'}{case_sensible};
646      $s;
647    }
648    
649    # Compare function which makes it easy to sort headers in the
650    # recommended "Good Practice" order.
651    ## taken from HTTP::Header
652    sub _header_cmp
653    {
654      my ($na, $nb) = ($a->{name}, $b->{name});
655        # Unknown headers are assign a large value so that they are
656        # sorted last.  This also helps avoiding a warning from -w
657        # about comparing undefined values.
658        $header_order{$na} = 999 unless defined $header_order{$na};
659        $header_order{$nb} = 999 unless defined $header_order{$nb};
660    
661        $header_order{$na} <=> $header_order{$nb} || $na cmp $nb;
662  }  }
663    
664  sub field_type ($$;$) {  =head2 $self->stringify ([%option])
665    
666    Returns the C<header> as a string.
667    
668    =cut
669    
670    sub stringify ($;%) {
671    my $self = shift;    my $self = shift;
672    my $field_name = shift;    my %params = @_;
673    my $new_field_type = shift;    my %option = %{$self->{option}};
674    if ($new_field_type) {    $option{format} = $params{-format} if $params{-format};
675      $self->{option}->{field_type}->{$field_name} = $new_field_type;    $self->_init_by_format ($option{format}, \%option);
676      for (grep {/^-/} keys %params) {$option{substr ($_, 1)} = $params{$_}}
677      ## Fill required fields
678        my %exist;
679        for ($self->field_name_list) {$exist{$_} = 1}
680        &{ $option{hook_stringify_fill_fields} } ($self, \%exist, \%option);
681      my @ret;
682      ## RFC 2774 numerical field name prefix
683      my %nprefix;
684      {no strict 'refs';
685        %nprefix = reverse %{ $self->{ns}->{number2uri} };
686        my $i = (sort { $a <=> $b } keys %{ $self->{ns}->{number2uri} })[-1] + 1;
687        $i = 10 if $i < 10;
688        my $hprefix = ${ &_NS_uri2package
689                           ($self->{ns}->{phname2uri}->{'x-http'})
690                           .'::OPTION' } {namespace_phname_goodcase};
691        for my $uri (keys %nprefix) {
692          if ($nprefix{ $uri } < 10) {
693            $nprefix{ $uri } = $i++;
694          }
695          my $nsfs = $self->item ($uri, -by => 'http-ns-define');
696          for my $i (0..$nsfs->count-1) {
697            my $nsf = ($nsfs->value ($i))[0];
698            if ($nsf->value eq $uri) {
699              $nsf->replace (ns => $nprefix{ $uri });
700              $nprefix{ $uri } = $hprefix . '-' . $nprefix{ $uri };
701              last;
702            }
703          }
704        }
705      }
706      my $_stringify = sub {
707        no strict 'refs';
708          my ($name, $body, $nsuri) = ($_[1]->{name}, $_[1]->{body}, $_[1]->{ns});
709          return unless length $name;
710          return if $option{output_mail_from} && $name eq 'mail-from';
711          $body = '' if !$option{output_bcc} && $name eq 'bcc';
712          my $nspackage = &_NS_uri2package ($nsuri);
713          my $oname;        ## Outputed field-name
714          my $prefix = $nprefix{ $nsuri }
715                    || ${$nspackage.'::OPTION'} {namespace_phname_goodcase}
716                    || $self->{ns}->{uri2phname}->{ $nsuri };
717          my $default_prefix = ${ &_NS_uri2package ($option{ns_default_phuri})
718                                  .'::OPTION'} {namespace_phname_goodcase};
719          $prefix = '' if $prefix eq $default_prefix;
720          $prefix =~ s/^\Q$default_prefix\E-//;
721          my $gc = ${$nspackage.'::OPTION'} {to_be_goodcase};
722          if (ref $gc) { $oname = &$gc ($self, $nspackage, $name, \%option) }
723          else { $oname = $name }
724          if ($prefix) { $oname = $prefix . '-' . $oname }
725          if ($option{format} =~ /uri-url-mailto/) {
726            return if (( ${$nspackage.'::OPTION'} {uri_mailto_safe}->{$name}
727                      || ${$nspackage.'::OPTION'} {uri_mailto_safe}->{':default'})
728                      < $option{uri_mailto_safe_level});
729            if ($name eq 'to') {
730              $body = $self->field ('to', -new_item_unless_exist => 0);
731              if (ref $body && $body->have_group) {
732                #
733              } elsif (ref $body && $body->count > 1) {
734                $body = $body->clone;
735                $body->delete ({-by => 'index'}, 0);
736              }
737            }
738          }
739          my $fbody;
740          if (ref $body) {
741            $fbody = $body->stringify (-format => $option{format});
742          } else {
743            $fbody = $body;
744          }
745          unless (${$nspackage.'::OPTION'} {field}->{$name}->{empty_body}) {
746            return unless length $fbody;
747          }
748          unless ($option{linebreak_strict}) {
749            ## bare \x0D and bare \x0A are unsafe
750            $fbody =~ s/\x0D(?=[^\x09\x0A\x20])/\x0D\x20/g;
751            $fbody =~ s/\x0A(?=[^\x09\x20])/\x0A\x20/g;
752          } else {
753            $fbody =~ s/\x0D\x0A(?=[^\x09\x20])/\x0D\x0A\x20/g;
754          }
755          if ($option{use_folding}) {
756            if (ref $option{output_folding}) {
757              $fbody = &{$option{output_folding}} ($self, $fbody,
758                -initial_length => length ($oname) +2);
759            } elsif ($option{output_folding}) {
760              $fbody = $self->_fold ($fbody, -initial_length => length ($oname) +2);
761            }
762          }
763          push @ret, sprintf $option{field_format_pattern}, $oname, $fbody;
764        };
765      if ($option{format} =~ /uri-url-mailto/) {
766        if ($option{format} =~ /uri-url-mailto-to/) {
767          my $to = $self->field ('to', -new_item_unless_exist => 0);
768          if ($to) {
769            unless ($to->have_group) {
770              my $fbody = $to->stringify (-format => $option{format}, -max => 1);
771              return &{$option{output_folding}} ($self, $fbody);
772            }
773          }
774          '';
775        } elsif ($option{format} =~ /uri-url-mailto-rfc1738/) {
776          my $to = $self->field ('to', -new_item_unless_exist => 0);
777          if ($to) {
778            my $fbody = $to->addr_spec (-format => $option{format});
779            return &{$option{output_folding}} ($self, $fbody);
780          }
781          '';
782        } else {
783          $self->scan ($_stringify);
784          my $ret = join ('&', @ret);
785          $ret;
786        }
787      } else {
788        if ($option{output_mail_from}) {
789          my $fromline = $self->field ('mail-from', -new_item_unless_exist => 0);
790          push @ret, 'From '.$fromline if $fromline;
791        }
792        $self->scan ($_stringify);
793        my $ret = join ("\x0D\x0A", @ret);
794        $ret? $ret."\x0D\x0A": '';
795    }    }
   $self->{option}->{field_type}->{$field_name}  
   || $self->{option}->{field_type}->{':DEFAULT'};  
796  }  }
797    *as_string = \&stringify;
798    
799    =head2 $self->option ($option_name, [$option_value])
800    
801    Set/gets new value of the option.
802    
803  sub _delete_empty_field ($) {  =cut
804    
805    sub option ($@) {
806    my $self = shift;    my $self = shift;
807    my @ret;    if (@_ == 1) {
808    for my $field (@{$self->{field}}) {      return $self->{option}->{ shift (@_) };
809      push @ret, $field if $field->{name};    }
810      while (my ($name, $value) = splice (@_, 0, 2)) {
811        $self->{option}->{$name} = $value;
812        if ($name eq 'format') {
813          for my $f (@{$self->{field}}) {
814            if (ref $f->{body}) {
815              $f->{body}->option (-format => $value);
816            }
817          }
818        }
819    }    }
   $self->{field} = \@ret;  
   $self;  
820  }  }
821    
822  sub fold ($$;$) {  sub field_type ($@) {shift->SUPER::value_type (@_)}
823    
824    ## $self->_fold ($string, %option = (-max, -initial_length(for field-name)) )
825    sub _fold ($$;%) {
826    my $self = shift;    my $self = shift;
827    my $string = shift;    my $string = shift;
828    my $len = shift || $self->{option}->{fold_length};    my %option = @_;
829    $len = 60 if $len < 60;    my $max = $self->{option}->{line_length_max};
830        $max = 20 if $max < 20;
   ## This code is taken from Mail::Header 1.43 in MailTools,  
   ## by Graham Barr (Maintained by Mark Overmeer <mailtools@overmeer.net>).  
   my $max = int($len - 5);         # 4 for leading spcs + 1 for [\,\;]  
   my $min = int($len * 4 / 5) - 4;  
   my $ml = $len;  
831        
832    if (length($string) > $ml) {    my $l = $option{-initial_length} || 0;
833       #Split the line up    $l += length $1 if $string =~ /^([^\x09\x20]+)/;
834       # first bias towards splitting at a , or a ; >4/5 along the line    $string =~ s{([\x09\x20][^\x09\x20]+)}{
835       # next split a whitespace      my $s = $1;
836       # else we are looking at a single word and probably don't want to split      if (($l + length $s) > $max) {
837       my $x = "";        $s = "\x0D\x0A\x20" . $s;
838       $x .= "$1\n "        $l = 1 + length $s;
839         while($string =~ s/^$REG{WSP}*(      } else { $l += length $s }
840                            [^"]{$min,$max}?[\,\;]      $s;
841                            |[^"]{1,$max}$REG{WSP}    }gex;
                           |[^\s"]*(?:"[^"]*"[^\s"]*)+$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;  
   }  
842    $string;    $string;
843  }  }
844    
845    sub _ns_load_ph ($$) {
846      my $self = shift;
847      my $name = shift;     ## normalized prefix (without HYPHEN-MINUS)
848      return if $self->{ns}->{phname2uri}->{$name};
849      $self->{ns}->{phname2uri}->{$name} = $NS_phname2uri{$name};
850      return unless $self->{ns}->{phname2uri}->{$name};
851      $self->{ns}->{uri2phname}->{$self->{ns}->{phname2uri}->{$name}} = $name;
852    }
853    
854    sub _ns_associate_numerical_prefix ($) {
855      my $self = shift;
856      $self->scan (sub {shift;
857        my $f = shift;  return unless $f->{name};
858        if ($f->{ns} eq $self->{ns}->{phname2uri}->{'x-http'}
859         || $f->{ns} eq $self->{ns}->{phname2uri}->{'x-http-c'}) {
860          my $fn = $f->{name};
861          if ($fn eq 'opt' || $fn eq 'man') {
862            $f->{body} = $self->_parse_value ($fn => $f->{body}, ns => $f->{ns});
863            for ($f->{body}->value (0..$f->{body}->count-1)) {
864              my ($nsuri, $number) = ($_->value, $_->item ('ns'));
865              if ($number && $nsuri) {
866                $self->{ns}->{number2uri}->{ $number } = $nsuri;
867              }
868            }
869          }
870        }
871      });
872      $self->scan (sub {shift;
873        my $f = shift;
874        if ($f->{ns} =~ /urn:x-suika-fam-cx:msgpm:header:x-temp:([0-9]+)$/ && $self->{ns}->{number2uri}->{ $1 }) {
875          $f->{ns} = $self->{ns}->{number2uri}->{ $1 };
876        }
877      });
878    }
879    
880    ## $package_name = Message::Header::_NS_uri2phpackage ($nsuri)
881    ## (For internal use of Message::* modules)
882    sub _NS_uri2phpackage ($) {
883      $NS_uri2phpackage{$_[0]}
884      || $NS_uri2phpackage{$Message::Header::Default::OPTION{namespace_uri}};
885    }
886    sub _NS_uri2package ($) {
887      $NS_uri2package{$_[0]}
888      || $NS_uri2phpackage{$_[0]}
889      || $NS_uri2phpackage{$Message::Header::Default::OPTION{namespace_uri}};
890    }
891    
892    =head2 $self->clone ()
893    
894    Returns a copy of Message::Header object.
895    
896    =cut
897    
898    ## Inhreited
899    
900    =head1 NOTE
901    
902    =head2 C<field-name>
903    
904    The header field name is not case sensitive.  To make the life
905    easier for perl users who wants to avoid quoting before the => operator,
906    you can use '_' as a synonym for '-' in header field names
907    (this behaviour can be suppressed by setting
908    C<translate_underscore> option to C<0> value).
909    
910  =head1 EXAMPLE  =head1 EXAMPLE
911    
912    ## Print field list    ## Print field list
# Line 443  sub fold ($$;$) { Line 914  sub fold ($$;$) {
914    use Message::Header;    use Message::Header;
915    my $header = Message::Header->parse ($header);    my $header = Message::Header->parse ($header);
916        
   ## Next sample is better.  
   #for my $field (@$header) {  
   #  print $field->{name}, "\t=> ", $field->{body}, "\n";  
   #}  
     
917    for my $i (0..$#$header) {    for my $i (0..$#$header) {
918      print $header->field_name ($i), "\t=> ", $header->field_body ($i), "\n";      print $header->field_name ($i), "\t=> ", $header->field_body ($i), "\n";
919    }    }
# Line 470  sub fold ($$;$) { Line 936  sub fold ($$;$) {
936    $header->add ('References' => '<hoge.msgid%foo@foo.example>');    $header->add ('References' => '<hoge.msgid%foo@foo.example>');
937    print $header;    print $header;
938    
939    =head1 ACKNOWLEDGEMENTS
940    
941    Some of codes are taken from other modules such as
942    HTTP::Header, Mail::Header.
943    
944  =head1 LICENSE  =head1 LICENSE
945    
946  Copyright 2002 wakaba E<lt>w@suika.fam.cxE<gt>.  Copyright 2002 wakaba E<lt>w@suika.fam.cxE<gt>.

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