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Revision 1.36 - (show annotations) (download)
Sat Jul 13 09:34:50 2002 UTC (21 years, 9 months ago) by wakaba
Branch: MAIN
Changes since 1.35: +4 -4 lines
2002-07-13  Wakaba <w@suika.fam.cx>

	* Util.pm:
	- (get_host_fqdn): New function.
	- (%OPTION): New hash.
	* Entity.pm (stringify): Pass 'format' option
	to the body (when stringify'ing it) with
	-parent_format option, instead of -format option.

1
2 =head1 NAME
3
4 Message::Header --- A Perl Module for Internet Message Headers
5
6 =cut
7
8 package Message::Header;
9 use strict;
10 use vars qw(%DEFAULT @ISA %REG $VERSION);
11 $VERSION=do{my @r=(q$Revision: 1.36 $=~/\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 ## taken from L<HTTP::Header>
61 # "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 xref
87 );
88 my %header_order;
89
90 =head1 CONSTRUCTORS
91
92 The following methods construct new C<Message::Header> objects:
93
94 =over 4
95
96 =cut
97
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 ($$\%) {
135 my $self = shift;
136 my ($format, $option) = @_;
137 if ($format =~ /http/) {
138 $option->{ns_default_phuri} = $self->{ns}->{phname2uri}->{'x-http'};
139 if ($format =~ /cgi/) {
140 unshift @header_order, qw(content-type location);
141 $option->{field_sort} = 'good-practice';
142 $option->{use_folding} = 0;
143 } else {
144 $option->{field_sort} = 'good-practice';
145 }
146 } elsif ($format =~ /mail|news/) { ## RFC 822
147 $option->{ns_default_phuri} = $self->{ns}->{phname2uri}->{'x-rfc822'};
148 }
149 if ($format =~ /uri-url-mailto/) {
150 $option->{output_bcc} = 0;
151 $option->{field_format_pattern} = '%s=%s';
152 $option->{output_folding} = sub {
153 $_[1] =~ s/([^:@+\$A-Za-z0-9\-_.!~*])/sprintf('%%%02X', ord $1)/ge;
154 $_[1];
155 }; ## Yes, this is not folding!
156 }
157 }
158
159 =item $msg = Message::Header->new ([%initial-fields/options])
160
161 Constructs a new C<Message::Headers> object. You might pass some initial
162 C<field-name>-C<field-body> pairs and/or options as parameters to the constructor.
163
164 Example:
165
166 $hdr = new Message::Headers
167 Date => 'Thu, 03 Feb 1994 00:00:00 +0000',
168 Content_Type => 'text/html',
169 Content_Location => 'http://www.foo.example/',
170 -format => 'mail-rfc2822' ## not to be header field
171 ;
172
173 =cut
174
175 ## Inherited
176
177 =item $msg = Message::Header->parse ($header, [%initial-fields/options])
178
179 Parses given C<header> and constructs a new C<Message::Headers>
180 object. You might pass some additional C<field-name>-C<field-body> pairs
181 or/and initial options as parameters to the constructor.
182
183 =cut
184
185 sub parse ($$;%) {
186 my $class = shift;
187 my $header = shift;
188 my $self = bless {}, $class;
189 $self->_init (@_);
190 if ($self->{option}->{linebreak_strict}) {
191 $header =~ s/\x0D\x0A$REG{WSP}/\x20/gos if $self->{option}->{use_folding};
192 } else {
193 $header =~ s/\x0D?\x0A$REG{WSP}/\x20/gos if $self->{option}->{use_folding};
194 }
195 my %option = (%{ $self->{option} });
196 $option{parse_all} = 0;
197 for my $field (split /\x0D?\x0A/, $header) {
198 if ($field =~ /$REG{M_fromline}/) {
199 my ($s,undef,$value) = $self->_value_to_arrayitem
200 ('mail-from' => $1, \%option);
201 push @{$self->{value}}, $value if $s;
202 } elsif ($field =~ /$REG{M_field}/) {
203 my ($name, $body) = ($1, $2);
204 $body =~ s/$REG{WSP}+$//;
205 my ($s,undef,$value) = $self->_value_to_arrayitem
206 ($name => $body, \%option);
207 push @{$self->{value}}, $value if $s;
208 } elsif (length $field) {
209 my ($s,undef,$value) = $self->_value_to_arrayitem
210 ('x-unknown' => $field, \%option);
211 push @{$self->{value}}, $value if $s;
212 }
213 }
214 $self->_ns_associate_numerical_prefix; ## RFC 2774 namespace
215 for (@{ $self->{value} }) {
216 no strict 'refs';
217 $_->{name}
218 = &{ ${ &_NS_uri2package ($_->{ns}).'::OPTION' }{n11n_name} }
219 ($self, &_NS_uri2package ($_->{ns}), $_->{name});
220 $_->{body} = $self->_parse_value ($_->{name} => $_->{body}, ns => $_->{ns})
221 if $self->{option}->{parse_all};
222 }
223 $self;
224 }
225
226 =item $msg = Message::Header->parse_array (\@header, [%initial-fields/options])
227
228 Parses given C<header> and constructs a new C<Message::Headers>
229 object. Same as C<Message::Header-E<lt>parse> but this method
230 is given an array reference. You might pass some additional
231 C<field-name>-C<field-body> pairs or/and initial options
232 as parameters to the constructor.
233
234 =cut
235
236 sub parse_array ($\@;%) {
237 my $class = shift;
238 my $header = shift;
239 Carp::croak "parse_array: first argument is not an array reference"
240 unless ref $header eq 'ARRAY';
241 my $self = bless {}, $class;
242 $self->_init (@_);
243 while (1) {
244 my $field = shift @$header;
245 if ($self->{option}->{use_folding}) {
246 while (1) {
247 if ($$header[0] =~ /^$REG{WSP}/) {
248 $field .= shift @$header;
249 } else {last}
250 }
251 }
252 if ($self->{option}->{linebreak_strict}) {
253 $field =~ s/\x0D\x0A//g;
254 } else {
255 $field =~ tr/\x0D\x0A//d;
256 }
257 local $self->{option}->{parse} = $self->{option}->{parse_all};
258 if ($field =~ /$REG{M_fromline}/) {
259 my ($s,undef,$value) = $self->_value_to_arrayitem
260 ('mail-from' => $1, $self->{option});
261 push @{$self->{value}}, $value if $s;
262 } elsif ($field =~ /$REG{M_field}/) {
263 my ($name, $body) = ($self->_n11n_field_name ($1), $2);
264 $body =~ s/$REG{WSP}+$//;
265 my ($s,undef,$value) = $self->_value_to_arrayitem
266 ($name => $body, $self->{option});
267 push @{$self->{value}}, $value if $s;
268 } elsif (length $field) {
269 my ($s,undef,$value) = $self->_value_to_arrayitem
270 ('x-unknown' => $field, $self->{option});
271 push @{$self->{value}}, $value if $s;
272 }
273 last if $#$header < 0;
274 }
275 $self->_ns_associate_numerical_prefix; ## RFC 2774 namespace
276 $self;
277 }
278
279 =back
280
281 =head1 METHODS
282
283 =head2 $self->field ($field_name)
284
285 Returns C<field-body> of given C<field-name>.
286 When there are two or more C<field>s whose name is C<field-name>,
287 this method return all C<field-body>s as array. (On scalar
288 context, only first one is returned.)
289
290 =cut
291
292 sub field ($@) {shift->SUPER::item (@_)}
293 sub field_exist ($@) {shift->SUPER::item_exist (@_)}
294
295 ## item-by?, \$checked-item, {item-key => 1}, \%option
296 sub _item_match ($$\$\%\%) {
297 my $self = shift;
298 my ($by, $i, $list, $option) = @_;
299 return 0 unless ref $$i; ## Already removed
300 if ($by eq 'name') {
301 my %o = %$option; #$o{parse} = 0;
302 my %l;
303 for (keys %$list) {
304 my ($s, undef, $v) = $self->_value_to_arrayitem ($_, '', \%o);
305 if ($s) {
306 $l{$v->{name} . ':' . ( $option->{ns} || $v->{ns} ) } = 1;
307 } else {
308 $l{$v->{name} .':'. ( $option->{ns} || $self->{option}->{ns_default_phuri} ) } = 1;
309 }
310 }
311 return 1 if $l{$$i->{name} . ':' . $$i->{ns}};
312 } elsif ($by eq 'ns') {
313 return 1 if $list->{ $$i->{ns} };
314 } elsif ($by eq 'http-ns-define') {
315 if ($$i->{ns} eq $self->{ns}->{phname2uri}->{'x-http'}
316 || $$i->{ns} eq $self->{ns}->{phname2uri}->{'x-http-c'}) {
317 my $n = $$i->{name};
318 if ($n eq 'opt' || $n eq 'c-opt' || $n eq 'man' || $n eq 'c-man') {
319 $option->{parse} = 0;
320 $$i->{body} = $self->_parse_value ($$i->{name} => $$i->{body}, ns => $$i->{ns});
321 for my $j (0..$$i->{body}->count-1) {
322 return 1 if $list->{ ($$i->{body}->value ($j))[0]->value };
323 }
324 }
325 }
326 }
327 0;
328 }
329 *_delete_match = \&_item_match;
330
331 ## Returns returned item value \$item-value, \%option
332 sub _item_return_value ($\$\%) {
333 if (ref ${$_[1]}->{body}) {
334 ${$_[1]}->{body};
335 } else {
336 ${$_[1]}->{body} = $_[0]->_parse_value (${$_[1]}->{name} => ${$_[1]}->{body},
337 ns => ${$_[1]}->{ns});
338 ${$_[1]}->{body};
339 }
340 }
341 *_add_return_value = \&_item_return_value;
342 *_replace_return_value = \&_item_return_value;
343
344 ## Returns returned (new created) item value $name, \%option
345 sub _item_new_value ($$\%) {
346 my $self = shift;
347 my ($name, $option) = @_;
348 if ($option->{by} eq 'http-ns-define') {
349 my $value = $self->_parse_value (opt => '', ns => $self->{ns}->{phname2uri}->{'x-http'});
350 ($value->value (0))[0]->value ($name);
351 {name => 'opt', body => $value, ns => $self->{ns}->{phname2uri}->{'x-http'}};
352 } else {
353 my ($s,undef,$value) = $self->_value_to_arrayitem
354 ($name => '', $option);
355 $s? $value: undef;
356 }
357 }
358
359
360
361 ## $self->_parse_value ($type, $value, %options);
362 sub _parse_value ($$$;%) {
363 my $self = shift;
364 my $name = shift ;#|| $self->{option}->{_VALTYPE_DEFAULT};
365 my $value = shift; return $value if ref $value;
366 my %option = @_;
367 my $vtype; { no strict 'refs';
368 my $vt = ${&_NS_uri2package ($option{ns}).'::OPTION'}{value_type};
369 if (ref $vt) {
370 $vtype = $vt->{$name} || $vt->{$self->{option}->{_VALTYPE_DEFAULT}};
371 }
372 ## For compatiblity.
373 unless (ref $vtype) { $vtype = $self->{option}->{value_type}->{$name}
374 || $self->{option}->{value_type}->{$self->{option}->{_VALTYPE_DEFAULT}} }
375 }
376 my $vpackage = $vtype->[0];
377 my %vopt = %{$vtype->[1]} if ref $vtype->[1];
378 if ($vpackage eq ':none:') {
379 return $value;
380 } elsif (defined $value) {
381 eval "require $vpackage" or Carp::croak qq{<parse>: $vpackage: Can't load package: $@};
382 return $vpackage->parse ($value,
383 -format => $self->{option}->{format},
384 -field_ns => $option{ns},
385 -field_name => $name,
386 -header_default_charset => $self->{option}->{header_default_charset},
387 -header_default_charset_input => $self->{option}->{header_default_charset_input},
388 -parse_all => $self->{option}->{parse_all},
389 %vopt);
390 } else {
391 eval "require $vpackage" or Carp::croak qq{<parse>: $vpackage: Can't load package: $@};
392 return $vpackage->new (
393 -format => $self->{option}->{format},
394 -field_ns => $option{ns},
395 -field_name => $name,
396 -header_default_charset => $self->{option}->{header_default_charset},
397 -header_default_charset_input => $self->{option}->{header_default_charset_input},
398 -parse_all => $self->{option}->{parse_all},
399 %vopt);
400 }
401 }
402
403 ## Defined for text/rfc822-headers
404 sub entity_header ($;$) {
405 my $self = shift;
406 my $new_header = shift;
407 if (ref $new_header) {
408 $self->{header} = $new_header;
409 }
410 $self->{header};
411 }
412
413 =head2 $self->field_name_list ()
414
415 Returns list of all C<field-name>s. (Even if there are two
416 or more C<field>s which have same C<field-name>, this method
417 returns ALL names.)
418
419 =cut
420
421 sub field_name_list ($) {
422 my $self = shift;
423 $self->_delete_empty ();
424 map { $_->{name} . ':' . $_->{ns} } @{$self->{value}};
425 }
426
427 sub namespace_ph_default ($;$) {
428 my $self = shift;
429 if (defined $_[0]) {
430 no strict 'refs';
431 $self->{option}->{ns_default_phuri} = $_[0];
432 $self->_ns_load_ph (${&_NS_uri2package ($self->{option}->{ns_default_phuri}).'::OPTION'}{namespace_phname});
433 }
434 $self->{option}->{ns_default_phuri};
435 }
436
437 =item $hdr->add ($field-name, $field-body, [$name, $body, ...])
438
439 Adds some field name/body pairs. Even if there are
440 one or more fields named given C<$field-name>,
441 given name/body pairs are ADDed. Use C<replace>
442 to remove same-name-fields.
443
444 Instead of field name-body pair, you might pass some options.
445 Four options are available for this method.
446
447 C<-parse>: Parses and validates C<field-body>, and returns
448 C<field-body> object. (When multiple C<field-body>s are
449 added, returns only last one.) (Default: C<defined wantarray>)
450
451 C<-prepend>: New fields are not appended,
452 but prepended to current fields. (Default: C<0>)
453
454 C<-translate-underscore>: Do C<field-name> =~ tr/_/-/. (Default: C<1>)
455
456 C<-validate>: Checks whether C<field-name> is valid or not.
457
458 =cut
459
460 ## [Name: Value] pair -> internal array item
461 ## $self->_value_to_arrayitem ($name => $value, {%options})
462 ## or
463 ## $self->_value_to_arrayitem ($name => [$value, %value_options], {%options})
464 ##
465 ## Return: ((1 = success / 0 = failue), $full_name, $arrayitem)
466 sub _value_to_arrayitem ($$$\%) {
467 my $self = shift;
468 my ($name, $value, $option) = @_;
469 my $value_option = {};
470 if (ref $value eq 'ARRAY') {
471 ($value, %$value_option) = @$value;
472 }
473 my $default_ns = $option->{ns_default_phuri};
474 my $nsuri = $default_ns;
475 $name =~ s/^$REG{WSP}+//; $name =~ s/$REG{WSP}+$//;
476
477 no strict 'refs';
478 if ($value_option->{ns}) {
479 $nsuri = $value_option->{ns};
480 } elsif ($option->{ns}) {
481 $nsuri = $option->{ns};
482 } elsif (($default_ns eq $self->{ns}->{uri2phname}->{'x-http'}
483 && $name =~ s/^([0-9]+)-//)
484 || ($name =~ s/^x-http-([0-9]+)-//i)) { ## Numric namespace prefix, RFC 2774
485 my $prefix = 0+$1;
486 $nsuri = $self->{ns}->{number2uri}->{ $prefix };
487 unless ($nsuri) {
488 $self->{ns}->{number2uri}->{ $prefix } = 'urn:x-suika-fam-cx:msgpm:header:x-temp:'.$prefix;
489 $nsuri = $self->{ns}->{number2uri}->{ $prefix };
490 }
491 } elsif (
492 ${ &_NS_uri2package ($default_ns).'::OPTION' }{use_ph_namespace}
493 && (
494 ($name =~ s/^([Xx]-[A-Za-z0-9]+|[A-Za-z]*[A-WYZa-wyz0-9][A-Za-z0-9]*)-
495 ([Xx]-[A-Za-z0-9]+|[A-Za-z0-9]*[A-WYZa-wyz0-9][A-Za-z0-9]*)-//x)
496 || $name =~ s/^([Xx]-[A-Za-z0-9]+|[A-Za-z0-9]*[A-WYZa-wyz0-9][A-Za-z0-9]*)-//
497 )) {
498 my ($prefix1, $prefix2) = ($1, $2);
499 my $original_prefix = $&; my $one_prefix = 0;
500 unless ($prefix2) {
501 $prefix2 = $prefix1;
502 $prefix1 = $self->{ns}->{uri2phname}->{ $default_ns };
503 $one_prefix = 1;
504 }
505 my $prefix
506 = &{ ${ &_NS_uri2package ($nsuri).'::OPTION' }{n11n_prefix} }
507 ($self, &_NS_uri2package ($nsuri), $prefix1.'-'.$prefix2);
508 $self->_ns_load_ph ($prefix);
509 $nsuri = $self->{ns}->{phname2uri}->{ $prefix };
510 unless ($nsuri) {
511 $nsuri = $default_ns;
512 $prefix
513 = &{ ${ &_NS_uri2package ($nsuri).'::OPTION' }{n11n_prefix} }
514 ($self, &_NS_uri2package ($nsuri), $one_prefix? $prefix2: $prefix1);
515 $self->_ns_load_ph ($prefix);
516 $nsuri = $self->{ns}->{phname2uri}->{ $prefix };
517 if ($nsuri) {
518 $name = $prefix2 . '-' . $name unless $one_prefix;
519 } else {
520 $name = $original_prefix . $name;
521 $nsuri = $default_ns;
522 }
523 }
524 }
525 $name
526 = &{ ${ &_NS_uri2package ($nsuri).'::OPTION' }{n11n_name} }
527 ($self, &_NS_uri2package ($nsuri), $name);
528 Carp::croak "$name: invalid field-name"
529 if $option->{field_name_validation}
530 && $name =~ /$REG{ $option->{field_name_unsafe_rule} }/;
531 $value = $self->_parse_value ($name => $value, ns => $nsuri)
532 if $option->{parse} || $option->{parse_all};
533 $option->{parse} = 0;
534 (1, $name.':'.$nsuri => {name => $name, body => $value, ns => $nsuri});
535 }
536 *_add_hash_check = \&_value_to_arrayitem;
537 *_replace_hash_check = \&_value_to_arrayitem;
538
539 =head2 $self->relace ($field_name, $field_body)
540
541 Set the C<field-body> named C<field-name> as $field_body.
542 If $field_name C<field> is already exists, it is replaced
543 by new $field_body value. If not, new C<field> is inserted.
544 (If there are some C<field> named as $field_name,
545 first one is used and the others are not changed.)
546
547 =cut
548
549 sub _replace_hash_shift ($\%$\%) {
550 shift; my $r = shift; my $n = $_[0]->{name} . ':' . $_[0]->{ns};
551 if ($$r{$n}) {
552 my $d = $$r{$n};
553 delete $$r{$n};
554 return $d;
555 }
556 undef;
557 }
558
559 =head2 $self->delete ($field-name, [$name, ...])
560
561 Deletes C<field> named as $field_name.
562
563 =cut
564
565
566 =head2 $self->count ([$field_name])
567
568 Returns the number of times the given C<field> appears.
569 If no $field_name is given, returns the number
570 of fields. (Same as $#$self+1)
571
572 =cut
573
574 sub _count_by_name ($$\%) {
575 my $self = shift;
576 my ($array, $option) = @_;
577 my $name = $self->_n11n_field_name ($$option{-name});
578 my @a = grep {$_->{name} eq $name} @{$self->{$array}};
579 $#a + 1;
580 }
581
582 ## Delete empty items
583 sub _delete_empty ($) {
584 my $self = shift;
585 my $array = $self->{option}->{_HASH_NAME};
586 $self->{$array} = [grep {ref $_ && length $_->{name}} @{$self->{$array}}];
587 }
588
589 =head2 $self->rename ($field-name, $new-name, [$old, $new,...])
590
591 Renames C<$field-name> as C<$new-name>.
592
593 =cut
594
595 sub rename ($%) {
596 my $self = shift;
597 my %params = @_;
598 my %option = %{$self->{option}};
599 for (grep {/^-/} keys %params) {$option{substr ($_, 1)} = $params{$_}}
600 my %new_name;
601 for (grep {/^[^-]/} keys %params) {
602 my ($old => $new)
603 = ($self->_n11n_field_name ($_) => $self->_n11n_field_name ($params{$_}));
604 $old =~ tr/_/-/ if $option{translate_underscore};
605 $new =~ tr/_/-/ if $option{translate_underscore};
606 Carp::croak "rename: $new: invalid field-name"
607 if $option{field_name_validation}
608 && $new =~ /$REG{$option{field_name_unsafe_rule}}/;
609 $new_name{$old} = $new;
610 }
611 for my $field (@{$self->{value}}) {
612 if (length $new_name{$field->{name}}) {
613 $field->{name} = $new_name{$field->{name}};
614 }
615 }
616 $self if defined wantarray;
617 }
618
619
620 =item $self->scan(\&doit)
621
622 Apply a subroutine to each header field in turn. The callback routine is
623 called with two parameters; the name of the field and a single value.
624 If the header has more than one value, then the routine is called once
625 for each value.
626
627 =cut
628
629 sub _scan_sort ($\@\%) {
630 my $self = shift;
631 my ($array, $option) = @_;
632 my $sort;
633 $sort = \&_header_cmp if $option->{field_sort} eq 'good-practice';
634 $sort = {$a cmp $b} if $option->{field_sort} eq 'alphabetic';
635 return ( sort $sort @$array ) if ref $sort;
636 @$array;
637 }
638
639 sub _n11n_field_name ($$) {
640 no strict 'refs';
641 my $self = shift;
642 my $s = shift;
643 $s =~ s/^$REG{WSP}+//; $s =~ s/$REG{WSP}+$//;
644 $s = lc $s unless ${&_NS_uri2package ($self->{option}->{ns_default_phuri}).'::OPTION'}{case_sensible};
645 $s;
646 }
647
648 # Compare function which makes it easy to sort headers in the
649 # recommended "Good Practice" order.
650 ## taken from HTTP::Header
651 sub _header_cmp
652 {
653 my ($na, $nb) = ($a->{name}, $b->{name});
654 # Unknown headers are assign a large value so that they are
655 # sorted last. This also helps avoiding a warning from -w
656 # about comparing undefined values.
657 $header_order{$na} = 999 unless defined $header_order{$na};
658 $header_order{$nb} = 999 unless defined $header_order{$nb};
659
660 $header_order{$na} <=> $header_order{$nb} || $na cmp $nb;
661 }
662
663 =head2 $self->stringify ([%option])
664
665 Returns the C<header> as a string.
666
667 =cut
668
669 sub stringify ($;%) {
670 my $self = shift;
671 my %params = @_;
672 my %option = %{$self->{option}};
673 $option{format} = $params{-format} if $params{-format};
674 $self->_init_by_format ($option{format}, \%option)
675 if $self->{option}->{format} ne $option{format};
676 for (grep {/^-/} keys %params) {$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 }
796 }
797 *as_string = \&stringify;
798
799 =head2 $self->option ($option_name, [$option_value])
800
801 Set/gets new value of the option.
802
803 =cut
804
805 sub option ($@) {
806 my $self = shift;
807 if (@_ == 1) {
808 return $self->{option}->{ shift (@_) };
809 }
810 while (my ($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 => $value);
816 }
817 }
818 }
819 }
820 }
821
822 sub field_type ($@) {shift->SUPER::value_type (@_)}
823
824 ## $self->_fold ($string, %option = (-max, -initial_length(for field-name)) )
825 sub _fold ($$;%) {
826 my $self = shift;
827 my $string = shift;
828 my %option = @_;
829 my $max = $self->{option}->{line_length_max};
830 $max = 20 if $max < 20;
831
832 my $l = $option{-initial_length} || 0;
833 $l += length $1 if $string =~ /^([^\x09\x20]+)/;
834 $string =~ s{([\x09\x20][^\x09\x20]+)}{
835 my $s = $1;
836 if (($l + length $s) > $max) {
837 $s = "\x0D\x0A\x20" . $s;
838 $l = 1 + length $s;
839 } else { $l += length $s }
840 $s;
841 }gex;
842 $string;
843 }
844
845 sub _ns_load_ph ($$) {
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
911
912 ## Print field list
913
914 use Message::Header;
915 my $header = Message::Header->parse ($header);
916
917 for my $i (0..$#$header) {
918 print $header->field_name ($i), "\t=> ", $header->field_body ($i), "\n";
919 }
920
921
922 ## Make simple header
923
924 use Message::Header;
925 use Message::Field::Address;
926 my $header = new Message::Header;
927
928 my $from = new Message::Field::Address;
929 $from->add ('foo@foo.example', name => 'F. Foo');
930 my $to = new Message::Field::Address;
931 $to->add ('bar@bar.example', name => 'Mr. Bar');
932 $to->add ('hoge@foo.example', name => 'Hoge-san');
933 $header->add ('From' => $from);
934 $header->add ('To' => $to);
935 $header->add ('Subject' => 'Re: Meeting');
936 $header->add ('References' => '<hoge.msgid%foo@foo.example>');
937 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
945
946 Copyright 2002 wakaba E<lt>w@suika.fam.cxE<gt>.
947
948 This program is free software; you can redistribute it and/or modify
949 it under the terms of the GNU General Public License as published by
950 the Free Software Foundation; either version 2 of the License, or
951 (at your option) any later version.
952
953 This program is distributed in the hope that it will be useful,
954 but WITHOUT ANY WARRANTY; without even the implied warranty of
955 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
956 GNU General Public License for more details.
957
958 You should have received a copy of the GNU General Public License
959 along with this program; see the file COPYING. If not, write to
960 the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
961 Boston, MA 02111-1307, USA.
962
963 =head1 CHANGE
964
965 See F<ChangeLog>.
966 $Date: 2002/07/13 09:34:50 $
967
968 =cut
969
970 1;

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