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revision 1.1 by wakaba, Wed Mar 13 12:51:11 2002 UTC revision 1.34 by wakaba, Mon Jul 8 11:49:18 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        -linebreak_strict   => 0,
45        -line_length_max    => 60,  ## For folding
46        #ns_default_phuri
47        -output_bcc => 0,
48        -output_folding     => 1,
49        -output_mail_from   => 0,
50        #parse_all
51        -translate_underscore       => 1,
52        #uri_mailto_safe
53        -uri_mailto_safe_level      => 4,
54        -use_folding        => 1,
55        #value_type
56    );
57    
58  use overload '@{}' => sub {shift->_delete_empty_field()->{field}},  ## taken from L<HTTP::Header>
59               '""' => sub {shift->stringify};  # "Good Practice" order of HTTP message headers:
60    #    - General-Headers
61    #    - Request-Headers
62    #    - Response-Headers
63    #    - Entity-Headers
64    # (From draft-ietf-http-v11-spec-rev-01, Nov 21, 1997)
65    my @header_order = qw(
66      mail-from x-envelope-from relay-version path status
67    
68       cache-control connection date pragma transfer-encoding upgrade trailer via
69    
70       accept accept-charset accept-encoding accept-language
71       authorization expect from host
72       if-modified-since if-match if-none-match if-range if-unmodified-since
73       max-forwards proxy-authorization range referer te user-agent
74    
75       accept-ranges age location proxy-authenticate retry-after server vary
76       warning www-authenticate
77    
78       mime-version
79       allow content-base content-encoding content-language content-length
80       content-location content-md5 content-range content-type
81       etag expires last-modified content-style-type content-script-type
82       link
83    
84  $REG{WSP}     = qr/[\x09\x20]/;    xref
85  $REG{FWS}     = qr/[\x09\x20]*/;  );
86  $REG{M_field} = qr/^([^\x3A]+):$REG{FWS}([\x00-\xFF]*)$/;  my %header_order;
 $REG{M_fromline} = qr/^\x3E?From$REG{WSP}+([\x00-\xFF]*)$/;  
 $REG{UNSAFE_field_name} = qr/[\x00-\x20\x3A\x7F-\xFF]/;  
87    
88  =head2 options  =head1 CONSTRUCTORS
89    
90  These options can be getten/set by C<get_option>/C<set_option>  The following methods construct new C<Message::Header> objects:
 method.  
91    
92  =head3 capitalize = 0/1  =over 4
93    
94  (First character of) C<field-name> is capitalized  =cut
95  when C<stringify>.  (Default = 1)  
96    sub _init ($;%) {
97      my $self = shift;
98      my %options = @_;
99      my $DEFAULT = Message::Util::make_clone (\%DEFAULT);
100      $self->SUPER::_init (%$DEFAULT, %options);
101      $self->{value} = [];
102      $self->_ns_load_ph ('default');
103      $self->_ns_load_ph ('x-rfc822');
104      $self->_ns_load_ph ('x-http');
105      $self->{option}->{ns_default_phuri} = $self->{ns}->{phname2uri}->{'x-rfc822'}
106        unless $self->{option}->{ns_default_phuri};
107      
108      ## For text/rfc822-headers
109      if (ref $options{entity_header}) {
110        $self->{entity_header} = $options{entity_header};
111        delete $options{entity_header};
112      }
113      my @new_fields = ();
114      for my $name (keys %options) {
115        unless (substr ($name, 0, 1) eq '-') {
116          push @new_fields, ($name => $options{$name});
117        }
118      }
119      $self->_init_by_format ($self->{option}->{format}, $self->{option});
120      # Make alternative representations of @header_order.  This is used
121      # for sorting.
122      my $i = 1;
123      for (@header_order) {
124          $header_order{$_} = $i++ unless $header_order{$_};
125      }
126      
127      $self->add (@new_fields, -parse => $self->{option}->{parse_all})
128        if $#new_fields > -1;
129    }
130    
131    sub _init_by_format ($$\%) {
132      my $self = shift;
133      my ($format, $option) = @_;
134      return if $format eq $option->{format};
135      if ($format =~ /http/) {
136        $option->{ns_default_phuri} = $self->{ns}->{phname2uri}->{'x-http'};
137        if ($format =~ /cgi/) {
138          unshift @header_order, qw(content-type location);
139          $option->{field_sort} = 'good-practice';
140          $option->{use_folding} = 0;
141        } else {
142          $option->{field_sort} = 'good-practice';
143        }
144      } elsif ($format =~ /mail|news/) {    ## RFC 822
145        $option->{ns_default_phuri} = $self->{ns}->{phname2uri}->{'x-rfc822'};
146      }
147      if ($format =~ /uri-url-mailto/) {
148        $option->{output_bcc} = 0;
149        $option->{field_format_pattern} = '%s=%s';
150        $option->{output_folding} = sub {
151          $_[1] =~ s/([^:@+\$A-Za-z0-9\-_.!~*])/sprintf('%%%02X', ord $1)/ge;
152          $_[1];
153        };  ## Yes, this is not folding!
154      }
155    }
156    
157  =head3 fold_length = numeric value  =item $msg = Message::Header->new ([%initial-fields/options])
158    
159  Length of line used to fold.  (Default = 70)  Constructs a new C<Message::Headers> object.  You might pass some initial
160    C<field-name>-C<field-body> pairs and/or options as parameters to the constructor.
161    
162  =head3 mail_from = 0/1  Example:
163    
164  Outputs "From " line (known as Un*x From, Mail-From, and so on)   $hdr = new Message::Headers
165  when C<stringify>.  (Default = 0)          Date         => 'Thu, 03 Feb 1994 00:00:00 +0000',
166            Content_Type => 'text/html',
167            Content_Location => 'http://www.foo.example/',
168            -format => 'mail-rfc2822'       ## not to be header field
169            ;
170    
171  =cut  =cut
172    
173  %DEFAULT = (  ## Inherited
   capitalize    => 1,  
   fold_length   => 70,  
   mail_from     => 0,  
 );  
174    
175  =head2 Message::Header->new ([%option])  =item $msg = Message::Header->parse ($header, [%initial-fields/options])
176    
177  Returns new Message::Header instance.  Some options can be  Parses given C<header> and constructs a new C<Message::Headers>
178  specified as hash.  object.  You might pass some additional C<field-name>-C<field-body> pairs
179    or/and initial options as parameters to the constructor.
180    
181  =cut  =cut
182    
183  sub new ($;%) {  sub parse ($$;%) {
184    my $class = shift;    my $class = shift;
185    my $self = bless {option => {@_}}, $class;    my $header = shift;
186    for (keys %DEFAULT) {$self->{option}->{$_} ||= $DEFAULT{$_}}    my $self = bless {}, $class;
187      $self->_init (@_);
188      if ($self->{option}->{linebreak_strict}) {
189        $header =~ s/\x0D\x0A$REG{WSP}/\x20/gos if $self->{option}->{use_folding};
190      } else {
191        $header =~ s/\x0D?\x0A$REG{WSP}/\x20/gos if $self->{option}->{use_folding};
192      }
193      my %option = (%{ $self->{option} });
194      $option{parse_all} = 0;
195      for my $field (split /\x0D?\x0A/, $header) {
196        if ($field =~ /$REG{M_fromline}/) {
197          my ($s,undef,$value) = $self->_value_to_arrayitem
198            ('mail-from' => $1, \%option);
199          push @{$self->{value}}, $value if $s;
200        } elsif ($field =~ /$REG{M_field}/) {
201          my ($name, $body) = ($1, $2);
202          $body =~ s/$REG{WSP}+$//;
203          my ($s,undef,$value) = $self->_value_to_arrayitem
204            ($name => $body, \%option);
205          push @{$self->{value}}, $value if $s;
206        } elsif (length $field) {
207          my ($s,undef,$value) = $self->_value_to_arrayitem
208            ('x-unknown' => $field, \%option);
209          push @{$self->{value}}, $value if $s;
210        }
211      }
212      $self->_ns_associate_numerical_prefix;        ## RFC 2774 namespace
213      for (@{ $self->{value} }) {
214        no strict 'refs';
215        $_->{name}
216          = &{ ${ &_NS_uri2package ($_->{ns}).'::OPTION' }{n11n_name} }
217          ($self, &_NS_uri2package ($_->{ns}), $_->{name});
218        $_->{body} = $self->_parse_value ($_->{name} => $_->{body}, ns => $_->{ns})
219          if $self->{option}->{parse_all};
220      }
221    $self;    $self;
222  }  }
223    
224  =head2 Message::Header->parse ($header, [%option])  =item $msg = Message::Header->parse_array (\@header, [%initial-fields/options])
225    
226  Parses given C<header> and return a new Message::Header  Parses given C<header> and constructs a new C<Message::Headers>
227  object.  Some options can be specified as hash.  object.  Same as C<Message::Header-E<lt>parse> but this method
228    is given an array reference.  You might pass some additional
229    C<field-name>-C<field-body> pairs or/and initial options
230    as parameters to the constructor.
231    
232  =cut  =cut
233    
234  sub parse ($$;%) {  sub parse_array ($\@;%) {
235    my $class = shift;    my $class = shift;
236    my $header = shift;    my $header = shift;
237    my $self = bless {option => {@_}}, $class;    Carp::croak "parse_array: first argument is not an array reference"
238    for (keys %DEFAULT) {$self->{option}->{$_} ||= $DEFAULT{$_}}      unless ref $header eq 'ARRAY';
239    $header =~ s/\x0D?\x0A$REG{WSP}+/\x20/gos;    ## unfold    my $self = bless {}, $class;
240    for my $field (split /\x0D?\x0A/, $header) {    $self->_init (@_);
241      while (1) {
242        my $field = shift @$header;
243        if ($self->{option}->{use_folding}) {
244          while (1) {
245            if ($$header[0] =~ /^$REG{WSP}/) {
246              $field .= shift @$header;
247            } else {last}
248          }
249        }
250        if ($self->{option}->{linebreak_strict}) {
251          $field =~ s/\x0D\x0A//g;
252        } else {
253          $field =~ tr/\x0D\x0A//d;
254        }
255        local $self->{option}->{parse} = $self->{option}->{parse_all};
256      if ($field =~ /$REG{M_fromline}/) {      if ($field =~ /$REG{M_fromline}/) {
257        push @{$self->{field}}, {name => 'mail-from', body => $1};        my ($s,undef,$value) = $self->_value_to_arrayitem
258            ('mail-from' => $1, $self->{option});
259          push @{$self->{value}}, $value if $s;
260      } elsif ($field =~ /$REG{M_field}/) {      } elsif ($field =~ /$REG{M_field}/) {
261        my ($name, $body) = ($1, $2);        my ($name, $body) = ($self->_n11n_field_name ($1), $2);
       $name =~ s/$REG{WSP}+$//;  
262        $body =~ s/$REG{WSP}+$//;        $body =~ s/$REG{WSP}+$//;
263        push @{$self->{field}}, {name => lc $name, body => $body};        my ($s,undef,$value) = $self->_value_to_arrayitem
264            ($name => $body, $self->{option});
265          push @{$self->{value}}, $value if $s;
266        } elsif (length $field) {
267          my ($s,undef,$value) = $self->_value_to_arrayitem
268            ('x-unknown' => $field, $self->{option});
269          push @{$self->{value}}, $value if $s;
270      }      }
271        last if $#$header < 0;
272    }    }
273      $self->_ns_associate_numerical_prefix;        ## RFC 2774 namespace
274    $self;    $self;
275  }  }
276    
277    =back
278    
279    =head1 METHODS
280    
281  =head2 $self->field ($field_name)  =head2 $self->field ($field_name)
282    
283  Returns C<field-body> of given C<field-name>.  Returns C<field-body> of given C<field-name>.
# Line 99  context, only first one is returned.) Line 287  context, only first one is returned.)
287    
288  =cut  =cut
289    
290  sub field ($$) {  sub field ($@) {shift->SUPER::item (@_)}
291    sub field_exist ($@) {shift->SUPER::item_exist (@_)}
292    
293    ## item-by?, \$checked-item, {item-key => 1}, \%option
294    sub _item_match ($$\$\%\%) {
295    my $self = shift;    my $self = shift;
296    my $name = lc shift;    my ($by, $i, $list, $option) = @_;
297    my @ret;    return 0 unless ref $$i;  ## Already removed
298    for my $field (@{$self->{field}}) {    if ($by eq 'name') {
299      if ($field->{name} eq $name) {      my %o = %$option; #$o{parse} = 0;
300        unless (wantarray) {      my %l;
301          return $field->{body};      for (keys %$list) {
302          my ($s, undef, $v) = $self->_value_to_arrayitem ($_, '', \%o);
303          if ($s) {
304            $l{$v->{name} . ':' . ( $option->{ns} || $v->{ns} ) } = 1;
305        } else {        } else {
306          push @ret, $field->{body};          $l{$v->{name} .':'. ( $option->{ns} || $self->{option}->{ns_default_phuri} ) } = 1;
307          }
308        }
309        return 1 if $l{$$i->{name} . ':' . $$i->{ns}};
310      } elsif ($by eq 'ns') {
311        return 1 if $list->{ $$i->{ns} };
312      } elsif ($by eq 'http-ns-define') {
313        if ($$i->{ns} eq $self->{ns}->{phname2uri}->{'x-http'}
314         || $$i->{ns} eq $self->{ns}->{phname2uri}->{'x-http-c'}) {
315          my $n = $$i->{name};
316          if ($n eq 'opt' || $n eq 'c-opt' || $n eq 'man' || $n eq 'c-man') {
317            $option->{parse} = 0;
318            $$i->{body} = $self->_parse_value ($$i->{name} => $$i->{body}, ns => $$i->{ns});
319            for my $j (0..$$i->{body}->count-1) {
320              return 1 if $list->{ ($$i->{body}->value ($j))[0]->value };
321            }
322        }        }
323      }      }
324    }    }
325    @ret;    0;
326    }
327    *_delete_match = \&_item_match;
328    
329    ## Returns returned item value    \$item-value, \%option
330    sub _item_return_value ($\$\%) {
331      if (ref ${$_[1]}->{body}) {
332        ${$_[1]}->{body};
333      } else {
334        ${$_[1]}->{body} = $_[0]->_parse_value (${$_[1]}->{name} => ${$_[1]}->{body},
335          ns => ${$_[1]}->{ns});
336        ${$_[1]}->{body};
337      }
338    }
339    *_add_return_value = \&_item_return_value;
340    *_replace_return_value = \&_item_return_value;
341    
342    ## Returns returned (new created) item value    $name, \%option
343    sub _item_new_value ($$\%) {
344      my $self = shift;
345      my ($name, $option) = @_;
346      if ($option->{by} eq 'http-ns-define') {
347        my $value = $self->_parse_value (opt => '', ns => $self->{ns}->{phname2uri}->{'x-http'});
348        ($value->value (0))[0]->value ($name);
349        {name => 'opt', body => $value, ns => $self->{ns}->{phname2uri}->{'x-http'}};
350      } else {
351        my ($s,undef,$value) = $self->_value_to_arrayitem
352            ($name => '', $option);
353        $s? $value: undef;
354      }
355    }
356    
357    
358    
359    ## $self->_parse_value ($type, $value, %options);
360    sub _parse_value ($$$;%) {
361      my $self = shift;
362      my $name = shift ;#|| $self->{option}->{_VALTYPE_DEFAULT};
363      my $value = shift;  return $value if ref $value;
364      my %option = @_;
365      my $vtype; { no strict 'refs';
366        my $vt = ${&_NS_uri2package ($option{ns}).'::OPTION'}{value_type};
367        if (ref $vt) {
368          $vtype = $vt->{$name} || $vt->{$self->{option}->{_VALTYPE_DEFAULT}};
369        }
370        ## For compatiblity.
371        unless (ref $vtype) { $vtype = $self->{option}->{value_type}->{$name}
372          || $self->{option}->{value_type}->{$self->{option}->{_VALTYPE_DEFAULT}} }
373      }
374      my $vpackage = $vtype->[0];
375      my %vopt = %{$vtype->[1]} if ref $vtype->[1];
376      if ($vpackage eq ':none:') {
377        return $value;
378      } elsif (defined $value) {
379        eval "require $vpackage" or Carp::croak qq{<parse>: $vpackage: Can't load package: $@};
380        return $vpackage->parse ($value,
381          -format   => $self->{option}->{format},
382          -field_ns => $option{ns},
383          -field_name       => $name,
384        -header_default_charset     => $self->{option}->{header_default_charset},
385        -header_default_charset_input       => $self->{option}->{header_default_charset_input},
386          -parse_all        => $self->{option}->{parse_all},
387        %vopt);
388      } else {
389        eval "require $vpackage" or Carp::croak qq{<parse>: $vpackage: Can't load package: $@};
390        return $vpackage->new (
391          -format   => $self->{option}->{format},
392          -field_ns => $option{ns},
393          -field_name       => $name,
394        -header_default_charset     => $self->{option}->{header_default_charset},
395        -header_default_charset_input       => $self->{option}->{header_default_charset_input},
396          -parse_all        => $self->{option}->{parse_all},
397        %vopt);
398      }
399    }
400    
401    ## Defined for text/rfc822-headers
402    sub entity_header ($;$) {
403      my $self = shift;
404      my $new_header = shift;
405      if (ref $new_header) {
406        $self->{header} = $new_header;
407      }
408      $self->{header};
409  }  }
410    
411  =head2 $self->field_name_list ()  =head2 $self->field_name_list ()
# Line 125  returns ALL names.) Line 418  returns ALL names.)
418    
419  sub field_name_list ($) {  sub field_name_list ($) {
420    my $self = shift;    my $self = shift;
421    $self->_delete_empty_field ();    $self->_delete_empty ();
422    map {$_->{name}} @{$self->{field}};    map { $_->{name} . ':' . $_->{ns} } @{$self->{value}};
423    }
424    
425    sub namespace_ph_default ($;$) {
426      my $self = shift;
427      if (defined $_[0]) {
428        no strict 'refs';
429        $self->{option}->{ns_default_phuri} = $_[0];
430        $self->_ns_load_ph (${&_NS_uri2package ($self->{option}->{ns_default_phuri}).'::OPTION'}{namespace_phname});
431      }
432      $self->{option}->{ns_default_phuri};
433  }  }
434    
435  =head2 $self->add ($field_name, $field_body)  =item $hdr->add ($field-name, $field-body, [$name, $body, ...])
436    
437    Adds some field name/body pairs.  Even if there are
438    one or more fields named given C<$field-name>,
439    given name/body pairs are ADDed.  Use C<replace>
440    to remove same-name-fields.
441    
442    Instead of field name-body pair, you might pass some options.
443    Four options are available for this method.
444    
445    C<-parse>: Parses and validates C<field-body>, and returns
446    C<field-body> object.  (When multiple C<field-body>s are
447    added, returns only last one.)  (Default: C<defined wantarray>)
448    
449  Adds an new C<field>.  It is not checked whether  C<-prepend>: New fields are not appended,
450  the field which named $field_body is already exist or not.  but prepended to current fields.  (Default: C<0>)
451  If you don't want duplicated C<field>s, use C<replace> method.  
452    C<-translate-underscore>: Do C<field-name> =~ tr/_/-/.  (Default: C<1>)
453    
454    C<-validate>: Checks whether C<field-name> is valid or not.
455    
456  =cut  =cut
457    
458  sub add ($$$) {  ## [Name: Value] pair -> internal array item
459    ## $self->_value_to_arrayitem ($name => $value, {%options})
460    ## or
461    ## $self->_value_to_arrayitem ($name => [$value, %value_options], {%options})
462    ##
463    ## Return: ((1 = success / 0 = failue), $full_name, $arrayitem)
464    sub _value_to_arrayitem ($$$\%) {
465    my $self = shift;    my $self = shift;
466    my ($name, $body) = (lc shift, shift);    my ($name, $value, $option) = @_;
467    return 0 if $name =~ /$REG{UNSAFE_field_name}/;    my $value_option = {};
468    push @{$self->{field}}, {name => $name, body => $body};    if (ref $value eq 'ARRAY') {
469    $self;      ($value, %$value_option) = @$value;
470      }
471      my $default_ns = $option->{ns_default_phuri};
472      my $nsuri = $default_ns;
473      $name =~ s/^$REG{WSP}+//;  $name =~ s/$REG{WSP}+$//;
474      
475      no strict 'refs';
476      if ($value_option->{ns}) {
477        $nsuri = $value_option->{ns};
478      } elsif ($option->{ns}) {
479        $nsuri = $option->{ns};
480      } elsif (($default_ns eq $self->{ns}->{uri2phname}->{'x-http'}
481           && $name =~ s/^([0-9]+)-//)
482        || ($name =~ s/^x-http-([0-9]+)-//i)) {     ## Numric namespace prefix, RFC 2774
483        my $prefix = 0+$1;
484        $nsuri = $self->{ns}->{number2uri}->{ $prefix };
485        unless ($nsuri) {
486          $self->{ns}->{number2uri}->{ $prefix } = 'urn:x-suika-fam-cx:msgpm:header:x-temp:'.$prefix;
487          $nsuri = $self->{ns}->{number2uri}->{ $prefix };
488        }
489      } elsif (
490        ${ &_NS_uri2package ($default_ns).'::OPTION' }{use_ph_namespace}
491        && (
492           ($name =~ s/^([Xx]-[A-Za-z0-9]+|[A-Za-z]*[A-WYZa-wyz0-9][A-Za-z0-9]*)-
493                        ([Xx]-[A-Za-z0-9]+|[A-Za-z0-9]*[A-WYZa-wyz0-9][A-Za-z0-9]*)-//x)
494         || $name =~ s/^([Xx]-[A-Za-z0-9]+|[A-Za-z0-9]*[A-WYZa-wyz0-9][A-Za-z0-9]*)-//
495        )) {
496        my ($prefix1, $prefix2) = ($1, $2);
497        my $original_prefix = $&;  my $one_prefix = 0;
498        unless ($prefix2) {
499          $prefix2 = $prefix1;
500          $prefix1 = $self->{ns}->{uri2phname}->{ $default_ns };
501          $one_prefix = 1;
502        }
503        my $prefix
504          = &{ ${ &_NS_uri2package ($nsuri).'::OPTION' }{n11n_prefix} }
505            ($self, &_NS_uri2package ($nsuri), $prefix1.'-'.$prefix2);
506        $self->_ns_load_ph ($prefix);
507        $nsuri = $self->{ns}->{phname2uri}->{ $prefix };
508        unless ($nsuri) {
509          $nsuri = $default_ns;
510          $prefix
511            = &{ ${ &_NS_uri2package ($nsuri).'::OPTION' }{n11n_prefix} }
512              ($self, &_NS_uri2package ($nsuri), $one_prefix? $prefix2: $prefix1);
513          $self->_ns_load_ph ($prefix);
514          $nsuri = $self->{ns}->{phname2uri}->{ $prefix };
515          if ($nsuri) {
516            $name = $prefix2 . '-' . $name unless $one_prefix;
517          } else {
518            $name = $original_prefix . $name;
519            $nsuri = $default_ns;
520          }
521        }
522      }
523      $name
524        = &{ ${ &_NS_uri2package ($nsuri).'::OPTION' }{n11n_name} }
525          ($self, &_NS_uri2package ($nsuri), $name);
526      Carp::croak "$name: invalid field-name"
527        if $option->{field_name_validation}
528          && $name =~ /$REG{ $option->{field_name_unsafe_rule} }/;
529      $value = $self->_parse_value ($name => $value, ns => $nsuri)
530        if $option->{parse} || $option->{parse_all};
531      $option->{parse} = 0;
532      (1, $name.':'.$nsuri => {name => $name, body => $value, ns => $nsuri});
533  }  }
534    *_add_hash_check = \&_value_to_arrayitem;
535    *_replace_hash_check = \&_value_to_arrayitem;
536    
537  =head2 $self->relace ($field_name, $field_body)  =head2 $self->relace ($field_name, $field_body)
538    
# Line 155  first one is used and the others are not Line 544  first one is used and the others are not
544    
545  =cut  =cut
546    
547  sub replace ($$$) {  sub _replace_hash_shift ($\%$\%) {
548    my $self = shift;    shift; my $r = shift;  my $n = $_[0]->{name} . ':' . $_[0]->{ns};
549    my ($name, $body) = (lc shift, shift);    if ($$r{$n}) {
550    return 0 if $name =~ /$REG{UNSAFE_field_name}/;      my $d = $$r{$n};
551    for my $field (@{$self->{field}}) {      delete $$r{$n};
552      if ($field->{name} eq $name) {      return $d;
       $field->{body} = $body;  
       return $self;  
     }  
553    }    }
554    push @{$self->{field}}, {name => $name, body => $body};    undef;
   $self;  
555  }  }
556    
557  =head2 $self->delete ($field_name, [$index])  =head2 $self->delete ($field-name, [$name, ...])
558    
559  Deletes C<field> named as $field_name.  Deletes C<field> named as $field_name.
 If $index is specified, only $index'th C<field> is deleted.  
 If not, ($index == 0), all C<field>s that have the C<field-name>  
 $field_name are deleted.  
560    
561  =cut  =cut
562    
 sub delete ($$;$) {  
   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;  
 }  
563    
564  =head2 $self->count ($field_name)  =head2 $self->count ([$field_name])
565    
566  Returns the number of times the given C<field> appears.  Returns the number of times the given C<field> appears.
567    If no $field_name is given, returns the number
568    of fields.  (Same as $#$self+1)
569    
570  =cut  =cut
571    
572  sub count ($$) {  sub _count_by_name ($$\%) {
573    my $self = shift;    my $self = shift;
574    my ($name) = (lc shift);    my ($array, $option) = @_;
575    my $count = 0;    my $name = $self->_n11n_field_name ($$option{-name});
576    for my $field (@{$self->{field}}) {    my @a = grep {$_->{name} eq $name} @{$self->{$array}};
577      if ($field->{name} eq $name) {    $#a + 1;
       $count++;  
     }  
   }  
   $count;  
578  }  }
579    
580  =head2 $self->stringify ([%option])  ## Delete empty items
581    sub _delete_empty ($) {
582      my $self = shift;
583      my $array = $self->{option}->{_HASH_NAME};
584      $self->{$array} = [grep {ref $_ && length $_->{name}} @{$self->{$array}}];
585    }
586    
587  Returns the C<header> as a string.  =head2 $self->rename ($field-name, $new-name, [$old, $new,...])
588    
589    Renames C<$field-name> as C<$new-name>.
590    
591  =cut  =cut
592    
593  sub stringify ($;%) {  sub rename ($%) {
594    my $self = shift;    my $self = shift;
595    my %OPT = @_;    my %params = @_;
596    my @ret;    my %option = %{$self->{option}};
597    $OPT{capitalize} ||= $self->{option}->{capitalize};    for (grep {/^-/} keys %params) {$option{substr ($_, 1)} = $params{$_}}
598    $OPT{mail_from} ||= $self->{option}->{mail_from};    my %new_name;
599    push @ret, 'From '.$self->field ('mail-from') if $OPT{mail_from};    for (grep {/^[^-]/} keys %params) {
600    for my $field (@{$self->{field}}) {      my ($old => $new)
601      my $name = $field->{name};        = ($self->_n11n_field_name ($_) => $self->_n11n_field_name ($params{$_}));
602      next unless $field->{name};      $old =~ tr/_/-/ if $option{translate_underscore};
603      next if !$OPT{mail_from} && $name eq 'mail-from';      $new =~ tr/_/-/ if $option{translate_underscore};
604      $name =~ s/((?:^|-)[a-z])/uc($1)/ge if $OPT{capitalize};      Carp::croak "rename: $new: invalid field-name"
605      push @ret, $name.': '.$self->fold ($field->{body});        if $option{field_name_validation}
606            && $new =~ /$REG{$option{field_name_unsafe_rule}}/;
607        $new_name{$old} = $new;
608    }    }
609    join "\n", @ret;    for my $field (@{$self->{value}}) {
610        if (length $new_name{$field->{name}}) {
611          $field->{name} = $new_name{$field->{name}};
612        }
613      }
614      $self if defined wantarray;
615  }  }
616    
 =head2 $self->get_option ($option_name)  
   
 Returns value of the option.  
617    
618  =head2 $self->set_option ($option_name, $option_value)  =item $self->scan(\&doit)
619    
620  Set new value of the option.  Apply a subroutine to each header field in turn.  The callback routine is
621    called with two parameters; the name of the field and a single value.
622    If the header has more than one value, then the routine is called once
623    for each value.
624    
625  =cut  =cut
626    
627  sub get_option ($$) {  sub _scan_sort ($\@\%) {
628    my $self = shift;    my $self = shift;
629    my ($name) = @_;    my ($array, $option) = @_;
630    $self->{option}->{$name};    my $sort;
631      $sort = \&_header_cmp if $option->{field_sort} eq 'good-practice';
632      $sort = {$a cmp $b} if $option->{field_sort} eq 'alphabetic';
633      return ( sort $sort @$array ) if ref $sort;
634      @$array;
635  }  }
636  sub set_option ($$$) {  
637    sub _n11n_field_name ($$) {
638      no strict 'refs';
639    my $self = shift;    my $self = shift;
640    my ($name, $value) = @_;    my $s = shift;
641    $self->{option}->{$name} = $value;    $s =~ s/^$REG{WSP}+//; $s =~ s/$REG{WSP}+$//;
642    $self;    $s = lc $s unless ${&_NS_uri2package ($self->{option}->{ns_default_phuri}).'::OPTION'}{case_sensible};
643      $s;
644    }
645    
646    # Compare function which makes it easy to sort headers in the
647    # recommended "Good Practice" order.
648    ## taken from HTTP::Header
649    sub _header_cmp
650    {
651      my ($na, $nb) = ($a->{name}, $b->{name});
652        # Unknown headers are assign a large value so that they are
653        # sorted last.  This also helps avoiding a warning from -w
654        # about comparing undefined values.
655        $header_order{$na} = 999 unless defined $header_order{$na};
656        $header_order{$nb} = 999 unless defined $header_order{$nb};
657    
658        $header_order{$na} <=> $header_order{$nb} || $na cmp $nb;
659  }  }
660    
661  sub _delete_empty_field ($) {  =head2 $self->stringify ([%option])
662    
663    Returns the C<header> as a string.
664    
665    =cut
666    
667    sub stringify ($;%) {
668    my $self = shift;    my $self = shift;
669      my %params = @_;
670      my %option = %{$self->{option}};
671      $option{format} = $params{-format} if $params{-format};
672      $self->_init_by_format ($option{format}, \%option);
673      for (grep {/^-/} keys %params) {$option{substr ($_, 1)} = $params{$_}}
674    my @ret;    my @ret;
675    for my $field (@{$self->{field}}) {    ## RFC 2774 numerical field name prefix
676      push @ret, $field if $field->{name};    my %nprefix;
677      {no strict 'refs';
678        %nprefix = reverse %{ $self->{ns}->{number2uri} };
679        my $i = (sort { $a <=> $b } keys %{ $self->{ns}->{number2uri} })[-1] + 1;
680        $i = 10 if $i < 10;
681        my $hprefix = ${ &_NS_uri2package
682                           ($self->{ns}->{phname2uri}->{'x-http'})
683                           .'::OPTION' } {namespace_phname_goodcase};
684        for my $uri (keys %nprefix) {
685          if ($nprefix{ $uri } < 10) {
686            $nprefix{ $uri } = $i++;
687          }
688          my $nsfs = $self->item ($uri, -by => 'http-ns-define');
689          for my $i (0..$nsfs->count-1) {
690            my $nsf = ($nsfs->value ($i))[0];
691            if ($nsf->value eq $uri) {
692              $nsf->replace (ns => $nprefix{ $uri });
693              $nprefix{ $uri } = $hprefix . '-' . $nprefix{ $uri };
694              last;
695            }
696          }
697        }
698      }
699      my $_stringify = sub {
700        no strict 'refs';
701          my ($name, $body, $nsuri) = ($_[1]->{name}, $_[1]->{body}, $_[1]->{ns});
702          return unless length $name;
703          return if $option{output_mail_from} && $name eq 'mail-from';
704          $body = '' if !$option{output_bcc} && $name eq 'bcc';
705          my $nspackage = &_NS_uri2package ($nsuri);
706          my $oname;        ## Outputed field-name
707          my $prefix = $nprefix{ $nsuri }
708                    || ${$nspackage.'::OPTION'} {namespace_phname_goodcase}
709                    || $self->{ns}->{uri2phname}->{ $nsuri };
710          my $default_prefix = ${ &_NS_uri2package ($option{ns_default_phuri})
711                                  .'::OPTION'} {namespace_phname_goodcase};
712          $prefix = '' if $prefix eq $default_prefix;
713          $prefix =~ s/^\Q$default_prefix\E-//;
714          my $gc = ${$nspackage.'::OPTION'} {to_be_goodcase};
715          if (ref $gc) { $oname = &$gc ($self, $nspackage, $name, \%option) }
716          else { $oname = $name }
717          if ($prefix) { $oname = $prefix . '-' . $oname }
718          if ($option{format} =~ /uri-url-mailto/) {
719            return if (( ${$nspackage.'::OPTION'} {uri_mailto_safe}->{$name}
720                      || ${$nspackage.'::OPTION'} {uri_mailto_safe}->{':default'})
721                      < $option{uri_mailto_safe_level});
722            if ($name eq 'to') {
723              $body = $self->field ('to', -new_item_unless_exist => 0);
724              if (ref $body && $body->have_group) {
725                #
726              } elsif (ref $body && $body->count > 1) {
727                $body = $body->clone;
728                $body->delete ({-by => 'index'}, 0);
729              }
730            }
731          }
732          my $fbody;
733          if (ref $body) {
734            $fbody = $body->stringify (-format => $option{format});
735          } else {
736            $fbody = $body;
737          }
738          unless (${$nspackage.'::OPTION'} {field}->{$name}->{empty_body}) {
739            return unless length $fbody;
740          }
741          unless ($option{linebreak_strict}) {
742            ## bare \x0D and bare \x0A are unsafe
743            $fbody =~ s/\x0D(?=[^\x09\x0A\x20])/\x0D\x20/g;
744            $fbody =~ s/\x0A(?=[^\x09\x20])/\x0A\x20/g;
745          } else {
746            $fbody =~ s/\x0D\x0A(?=[^\x09\x20])/\x0D\x0A\x20/g;
747          }
748          if ($option{use_folding}) {
749            if (ref $option{output_folding}) {
750              $fbody = &{$option{output_folding}} ($self, $fbody,
751                -initial_length => length ($oname) +2);
752            } elsif ($option{output_folding}) {
753              $fbody = $self->_fold ($fbody, -initial_length => length ($oname) +2);
754            }
755          }
756          push @ret, sprintf $option{field_format_pattern}, $oname, $fbody;
757        };
758      if ($option{format} =~ /uri-url-mailto/) {
759        if ($option{format} =~ /uri-url-mailto-to/) {
760          my $to = $self->field ('to', -new_item_unless_exist => 0);
761          if ($to) {
762            unless ($to->have_group) {
763              my $fbody = $to->stringify (-format => $option{format}, -max => 1);
764              return &{$option{output_folding}} ($self, $fbody);
765            }
766          }
767          '';
768        } elsif ($option{format} =~ /uri-url-mailto-rfc1738/) {
769          my $to = $self->field ('to', -new_item_unless_exist => 0);
770          if ($to) {
771            my $fbody = $to->addr_spec (-format => $option{format});
772            return &{$option{output_folding}} ($self, $fbody);
773          }
774          '';
775        } else {
776          $self->scan ($_stringify);
777          my $ret = join ('&', @ret);
778          $ret;
779        }
780      } else {
781        if ($option{output_mail_from}) {
782          my $fromline = $self->field ('mail-from', -new_item_unless_exist => 0);
783          push @ret, 'From '.$fromline if $fromline;
784        }
785        $self->scan ($_stringify);
786        my $ret = join ("\x0D\x0A", @ret);
787        $ret? $ret."\x0D\x0A": '';
788    }    }
   $self->{field} = \@ret;  
   $self;  
789  }  }
790    *as_string = \&stringify;
791    
792    =head2 $self->option ($option_name, [$option_value])
793    
794    Set/gets new value of the option.
795    
796    =cut
797    
798  sub fold ($$;$) {  sub option ($@) {
799      my $self = shift;
800      if (@_ == 1) {
801        return $self->{option}->{ shift (@_) };
802      }
803      while (my ($name, $value) = splice (@_, 0, 2)) {
804        $self->{option}->{$name} = $value;
805        if ($name eq 'format') {
806          for my $f (@{$self->{field}}) {
807            if (ref $f->{body}) {
808              $f->{body}->option (-format => $value);
809            }
810          }
811        }
812      }
813    }
814    
815    sub field_type ($@) {shift->SUPER::value_type (@_)}
816    
817    ## $self->_fold ($string, %option = (-max, -initial_length(for field-name)) )
818    sub _fold ($$;%) {
819    my $self = shift;    my $self = shift;
820    my $string = shift;    my $string = shift;
821    my $len = shift || $self->{option}->{fold_length};    my %option = @_;
822    $len = 60 if $len < 60;    my $max = $self->{option}->{line_length_max};
823      $max = 20 if $max < 20;
824        
825    ## This code is taken from Mail::Header 1.43 in MailTools,    my $l = $option{-initial_length} || 0;
826    ## by Graham Barr (Maintained by Mark Overmeer <mailtools@overmeer.net>).    $l += length $1 if $string =~ /^([^\x09\x20]+)/;
827    my $max = int($len - 5);         # 4 for leading spcs + 1 for [\,\;]    $string =~ s{([\x09\x20][^\x09\x20]+)}{
828    my $min = int($len * 4 / 5) - 4;      my $s = $1;
829    my $ml = $len;      if (($l + length $s) > $max) {
830            $s = "\x0D\x0A\x20" . $s;
831    if (length($string) > $ml) {        $l = 1 + length $s;
832       #Split the line up      } else { $l += length $s }
833       # first bias towards splitting at a , or a ; >4/5 along the line      $s;
834       # next split a whitespace    }gex;
      # else we are looking at a single word and probably don't want to split  
      my $x = "";  
      $x .= "$1\n    "  
        while($string =~ s/^$REG{WSP}*(  
                           [^"]{$min,$max}?[\,\;]  
                           |[^"]{1,$max}$REG{WSP}  
                           |[^\s"]*(?:"[^"]*"[^\s"]*)+$REG{WSP}  
                           |[^\s"]+$REG{WSP}  
                           )  
                         //x);  
      $x .= $string;  
      $string = $x;  
      $string =~ s/(\A$REG{WSP}+|$REG{WSP}+\Z)//sog;  
      $string =~ s/\s+\n/\n/sog;  
   }  
835    $string;    $string;
836  }  }
837    
838    sub _ns_load_ph ($$) {
839      my $self = shift;
840      my $name = shift;     ## normalized prefix (without HYPHEN-MINUS)
841      return if $self->{ns}->{phname2uri}->{$name};
842      $self->{ns}->{phname2uri}->{$name} = $NS_phname2uri{$name};
843      return unless $self->{ns}->{phname2uri}->{$name};
844      $self->{ns}->{uri2phname}->{$self->{ns}->{phname2uri}->{$name}} = $name;
845    }
846    
847    sub _ns_associate_numerical_prefix ($) {
848      my $self = shift;
849      $self->scan (sub {shift;
850        my $f = shift;  return unless $f->{name};
851        if ($f->{ns} eq $self->{ns}->{phname2uri}->{'x-http'}
852         || $f->{ns} eq $self->{ns}->{phname2uri}->{'x-http-c'}) {
853          my $fn = $f->{name};
854          if ($fn eq 'opt' || $fn eq 'man') {
855            $f->{body} = $self->_parse_value ($fn => $f->{body}, ns => $f->{ns});
856            for ($f->{body}->value (0..$f->{body}->count-1)) {
857              my ($nsuri, $number) = ($_->value, $_->item ('ns'));
858              if ($number && $nsuri) {
859                $self->{ns}->{number2uri}->{ $number } = $nsuri;
860              }
861            }
862          }
863        }
864      });
865      $self->scan (sub {shift;
866        my $f = shift;
867        if ($f->{ns} =~ /urn:x-suika-fam-cx:msgpm:header:x-temp:([0-9]+)$/ && $self->{ns}->{number2uri}->{ $1 }) {
868          $f->{ns} = $self->{ns}->{number2uri}->{ $1 };
869        }
870      });
871    }
872    
873    ## $package_name = Message::Header::_NS_uri2phpackage ($nsuri)
874    ## (For internal use of Message::* modules)
875    sub _NS_uri2phpackage ($) {
876      $NS_uri2phpackage{$_[0]}
877      || $NS_uri2phpackage{$Message::Header::Default::OPTION{namespace_uri}};
878    }
879    sub _NS_uri2package ($) {
880      $NS_uri2package{$_[0]}
881      || $NS_uri2phpackage{$_[0]}
882      || $NS_uri2phpackage{$Message::Header::Default::OPTION{namespace_uri}};
883    }
884    
885    =head2 $self->clone ()
886    
887    Returns a copy of Message::Header object.
888    
889    =cut
890    
891    ## Inhreited
892    
893    =head1 NOTE
894    
895    =head2 C<field-name>
896    
897    The header field name is not case sensitive.  To make the life
898    easier for perl users who wants to avoid quoting before the => operator,
899    you can use '_' as a synonym for '-' in header field names
900    (this behaviour can be suppressed by setting
901    C<translate_underscore> option to C<0> value).
902    
903  =head1 EXAMPLE  =head1 EXAMPLE
904    
905    ## Print field list    ## Print field list
# Line 308  sub fold ($$;$) { Line 907  sub fold ($$;$) {
907    use Message::Header;    use Message::Header;
908    my $header = Message::Header->parse ($header);    my $header = Message::Header->parse ($header);
909        
910    for my $field (@$header) {    for my $i (0..$#$header) {
911      print $field->{name}, "\t=> ", $field->{body}, "\n";      print $header->field_name ($i), "\t=> ", $header->field_body ($i), "\n";
912    }    }
913        
914        
915    ## Make simple header    ## Make simple header
916        
917      use Message::Header;
918    use Message::Field::Address;    use Message::Field::Address;
919    my $header = new Message::Header;    my $header = new Message::Header;
920        
# Line 329  sub fold ($$;$) { Line 929  sub fold ($$;$) {
929    $header->add ('References' => '<hoge.msgid%foo@foo.example>');    $header->add ('References' => '<hoge.msgid%foo@foo.example>');
930    print $header;    print $header;
931    
932    =head1 ACKNOWLEDGEMENTS
933    
934    Some of codes are taken from other modules such as
935    HTTP::Header, Mail::Header.
936    
937  =head1 LICENSE  =head1 LICENSE
938    
939  Copyright 2002 wakaba E<lt>w@suika.fam.cxE<gt>.  Copyright 2002 wakaba E<lt>w@suika.fam.cxE<gt>.
# Line 351  Boston, MA 02111-1307, USA. Line 956  Boston, MA 02111-1307, USA.
956  =head1 CHANGE  =head1 CHANGE
957    
958  See F<ChangeLog>.  See F<ChangeLog>.
959    $Date$
960    
961  =cut  =cut
962    

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