WebHACC/Language/HTML.pm

package WebHACC::Language::HTML;
use strict;
require WebHACC::Language::DOM;
push our @ISA, 'WebHACC::Language::DOM';

sub new ($) {
  return bless {}, shift;
} # new

sub generate_syntax_error_section ($) {
  my $self = shift;
  
  require Message::DOM::DOMImplementation;
  require Encode;
  require Whatpm::HTML;
  
  my $out = $self->output;
  $out->start_section (role => 'parse-errors');
  $out->start_error_list (role => 'parse-errors');
  $self->result->layer_applicable ('syntax');

  my $input = $self->input;
  my $result = $self->result;

  my $onerror = sub {
    my %opt = @_;
    $result->add_error (layer => 'syntax', %opt);

    if ($opt{type} eq 'chardecode:no error') {
      $self->result->layer_uncertain ('encode');
    } elsif ($opt{type} eq 'chardecode:fallback') {
      $self->result->layer_uncertain ('charset');
      $self->result->layer_uncertain ('syntax');
      $self->result->layer_uncertain ('structure');
      $self->result->layer_uncertain ('semantics');
    }
  };

  $self->result->layer_applicable ('charset');
  my $char_checker = sub ($) {
    require Whatpm::Charset::UnicodeChecker;
    return Whatpm::Charset::UnicodeChecker->new_handle ($_[0]);
  }; # $char_checker

  my $dom = Message::DOM::DOMImplementation->new;
  my $doc = $dom->create_document;
  my $el;
  my $inner_html_element = $input->{inner_html_element};
  if (defined $inner_html_element and length $inner_html_element) {
    $input->{charset} ||= 'utf-8';
    my $t = \($input->{s});
    unless ($input->{is_char_string}) {
      $t = \(Encode::decode ($input->{charset}, $$t));
      $self->result->layer_applicable ('encode');
    }
    
    $el = $doc->create_element_ns
        ('http://www.w3.org/1999/xhtml', [undef, $inner_html_element]);
    Whatpm::HTML->set_inner_html ($el, $$t, $onerror, $char_checker);

    $self->{structure} = $el;
    $self->{_structure_root} = $doc;
        ## NOTE: This is necessary, otherwise it would be garbage collected
        ## before $el is useless, since $el->owner_document is only a weak
        ## reference.
  } else {
    if ($input->{is_char_string}) {
      Whatpm::HTML->parse_char_string ($input->{s} => $doc,
                                       $onerror, $char_checker);
    } else {
      $self->result->layer_applicable ('encode');
      Whatpm::HTML->parse_byte_string
          ($input->{charset}, $input->{s} => $doc, $onerror, $char_checker);
    }

    $self->{structure} = $doc;
  }
  $doc->manakai_charset ($input->{official_charset})
      if defined $input->{official_charset};

  $doc->document_uri ($input->url);
  $doc->manakai_entity_base_uri ($input->{base_uri});

  $doc->input_encoding (undef) if $input->isa ('WebHACC::Input::Text');

  $out->end_error_list (role => 'parse-errors');
  $out->end_section;
} # generate_syntax_error_section

sub source_charset ($) {
  my $self = shift;
  return $self->input->{charset} || ($self->{structure}->owner_document || $self->{structure})->input_encoding;
  ## TODO: Can we always use input_encoding?
} # source_charset

1;
1	wakaba	1.1	package WebHACC::Language::HTML;
2			use strict;
3			require WebHACC::Language::DOM;
4			push our @ISA, 'WebHACC::Language::DOM';
5
6			sub new ($) {
7			return bless {}, shift;
8			} # new
9
10			sub generate_syntax_error_section ($) {
11			my $self = shift;
12
13	wakaba	1.4	require Message::DOM::DOMImplementation;
14	wakaba	1.1	require Encode;
15			require Whatpm::HTML;
16
17			my $out = $self->output;
18	wakaba	1.3	$out->start_section (role => 'parse-errors');
19			$out->start_error_list (role => 'parse-errors');
20	wakaba	1.5	$self->result->layer_applicable ('syntax');
21	wakaba	1.1
22			my $input = $self->input;
23			my $result = $self->result;
24
25			my $onerror = sub {
26	wakaba	1.7	my %opt = @_;
27			$result->add_error (layer => 'syntax', %opt);
28
29			if ($opt{type} eq 'chardecode:no error') {
30			$self->result->layer_uncertain ('encode');
31			} elsif ($opt{type} eq 'chardecode:fallback') {
32			$self->result->layer_uncertain ('charset');
33			$self->result->layer_uncertain ('syntax');
34			$self->result->layer_uncertain ('structure');
35			$self->result->layer_uncertain ('semantics');
36			}
37	wakaba	1.1	};
38
39	wakaba	1.10	$self->result->layer_applicable ('charset');
40			my $char_checker = sub ($) {
41			require Whatpm::Charset::UnicodeChecker;
42			return Whatpm::Charset::UnicodeChecker->new_handle ($_[0]);
43			}; # $char_checker
44
45	wakaba	1.1	my $dom = Message::DOM::DOMImplementation->new;
46			my $doc = $dom->create_document;
47			my $el;
48			my $inner_html_element = $input->{inner_html_element};
49			if (defined $inner_html_element and length $inner_html_element) {
50	wakaba	1.7	$input->{charset} \|\|= 'utf-8';
51	wakaba	1.1	my $t = \($input->{s});
52			unless ($input->{is_char_string}) {
53			$t = \(Encode::decode ($input->{charset}, $$t));
54	wakaba	1.7	$self->result->layer_applicable ('encode');
55	wakaba	1.1	}
56
57			$el = $doc->create_element_ns
58			('http://www.w3.org/1999/xhtml', [undef, $inner_html_element]);
59	wakaba	1.10	Whatpm::HTML->set_inner_html ($el, $$t, $onerror, $char_checker);
60	wakaba	1.1
61			$self->{structure} = $el;
62	wakaba	1.7	$self->{_structure_root} = $doc;
63			## NOTE: This is necessary, otherwise it would be garbage collected
64			## before $el is useless, since $el->owner_document is only a weak
65			## reference.
66	wakaba	1.1	} else {
67			if ($input->{is_char_string}) {
68	wakaba	1.10	Whatpm::HTML->parse_char_string ($input->{s} => $doc,
69			$onerror, $char_checker);
70	wakaba	1.1	} else {
71	wakaba	1.7	$self->result->layer_applicable ('encode');
72	wakaba	1.1	Whatpm::HTML->parse_byte_string
73	wakaba	1.10	($input->{charset}, $input->{s} => $doc, $onerror, $char_checker);
74	wakaba	1.1	}
75
76			$self->{structure} = $doc;
77			}
78			$doc->manakai_charset ($input->{official_charset})
79			if defined $input->{official_charset};
80
81	wakaba	1.9	$doc->document_uri ($input->url);
82	wakaba	1.1	$doc->manakai_entity_base_uri ($input->{base_uri});
83
84	wakaba	1.8	$doc->input_encoding (undef) if $input->isa ('WebHACC::Input::Text');
85
86	wakaba	1.3	$out->end_error_list (role => 'parse-errors');
87	wakaba	1.1	$out->end_section;
88			} # generate_syntax_error_section
89
90			sub source_charset ($) {
91			my $self = shift;
92			return $self->input->{charset} \|\| ($self->{structure}->owner_document \|\| $self->{structure})->input_encoding;
93			## TODO: Can we always use input_encoding?
94			} # source_charset
95
96			1;