--- test/html-webhacc/cc.cgi	2008/03/21 11:17:00	1.47
+++ test/html-webhacc/cc.cgi	2008/08/14 15:50:42	1.62
@@ -1,1543 +1,138 @@
 #!/usr/bin/perl
 use strict;
-use utf8;
 
 use lib qw[/home/httpd/html/www/markup/html/whatpm
            /home/wakaba/work/manakai2/lib];
 use CGI::Carp qw[fatalsToBrowser];
-use Scalar::Util qw[refaddr];
-use Time::HiRes qw/time/;
 
-sub htescape ($) {
-  my $s = $_[0];
-  $s =~ s/&/&/g;
-  $s =~ s/</g;
-  $s =~ s/>/>/g;
-  $s =~ s/"/"/g;
-  $s =~ s{([\x00-\x09\x0B-\x1F\x7F-\xA0\x{FEFF}\x{FFFC}-\x{FFFF}])}{
-    sprintf 'U+%04X ', ord $1;
-  }ge;
-  return $s;
-} # htescape
-
-  my @nav;
-  my %time;
-  require Message::DOM::DOMImplementation;
-  my $dom = Message::DOM::DOMImplementation->new;
+  require WebHACC::Input;
+
 {
-  use Message::CGI::HTTP;
+  require Message::CGI::HTTP;
   my $http = Message::CGI::HTTP->new;
 
+  require WebHACC::Output;
+  my $out = WebHACC::Output->new;
+  $out->handle (*STDOUT);
+  $out->set_utf8;
+
   if ($http->get_meta_variable ('PATH_INFO') ne '/') {
-    print STDOUT "Status: 404 Not Found\nContent-Type: text/plain; charset=us-ascii\n\n400";
+    $out->http_error (404);
     exit;
   }
 
-  binmode STDOUT, ':utf8';
-  $| = 1;
-
-  load_text_catalog ('en'); ## TODO: conneg
+  ## TODO: We need real conneg support...
+  my $primary_language = 'en';
+  if ($ENV{HTTP_ACCEPT_LANGUAGE} =~ /ja/) {
+    $primary_language = 'ja';
+  }
+  $out->load_text_catalog ($primary_language);
+  
+  $out->set_flush;
+  $out->http_header;
+  $out->html_header;
+  $out->unset_flush;
+
+  $out->generate_input_section ($http);
+
+  my $u = $http->get_parameter ('uri');
+  my $s = $http->get_parameter ('s');
+  if ((not defined $u or not length $u) and
+      (not defined $s or not length $s)) {
+    exit;
+  }
 
-  print STDOUT qq[Content-Type: text/html; charset=utf-8
+  require WebHACC::Result;
+  my $result = WebHACC::Result->new;
+  $result->output ($out);
 
-
-
-
-Web Document Conformance Checker (BETA) 
-
-
-Request URI 
-    <@{[htescape $input->{request_uri}]} >Document URI 
-    <@{[htescape $input->{uri}]} >
-      yet
-  push @nav, ['#document-info' => 'Information'];
-
-if (defined $input->{s}) {
-  $char_length = length $input->{s};
-
-  print STDOUT qq[
-
Base URI 
-    
<@{[htescape $input->{base_uri}]} >
-
Internet Media Type 
-    
@{[htescape $input->{media_type}]}
-    @{[$input->{media_type_overridden} ? '(overridden) ' : defined $input->{official_type} ? $input->{media_type} eq $input->{official_type} ? '' : '(sniffed; official type is: '.htescape ($input->{official_type}).')' : '(sniffed) ']} 
-
Character Encoding 
-    
@{[defined $input->{charset} ? ''.htescape ($input->{charset}).'' : '(none)']}
-    @{[$input->{charset_overridden} ? '(overridden) ' : '']} 
-
Length 
-    
$char_length byte@{[$char_length == 1 ? '' : 's']} 
-
-
-];
-  for (@nav) {
-    print STDOUT qq[$_->[1]  
-
-
-];
-
-  for (qw/decode parse parse_html parse_xml parse_manifest
-          check check_manifest/) {
-    next unless defined $time{$_};
-    open my $file, '>>', ".cc-$_.txt" or die ".cc-$_.txt: $!";
-    print $file $char_length, "\t", $time{$_}, "\n";
-  }
+  check_and_print ($input => $result => $out);
+  
+  $out->nav_list;
 
-exit;
+  exit;
 }
 
-sub add_error ($$$) {
-  my ($layer, $err, $result) = @_;
-  if (defined $err->{level}) {
-    if ($err->{level} eq 's') {
-      $result->{$layer}->{should}++;
-      $result->{$layer}->{score_min} -= 2;
-      $result->{conforming_min} = 0;
-    } elsif ($err->{level} eq 'w' or $err->{level} eq 'g') {
-      $result->{$layer}->{warning}++;
-    } elsif ($err->{level} eq 'u' or $err->{level} eq 'unsupported') {
-      $result->{$layer}->{unsupported}++;
-      $result->{unsupported} = 1;
-    } elsif ($err->{level} eq 'i') {
-      #
-    } else {
-      $result->{$layer}->{must}++;
-      $result->{$layer}->{score_max} -= 2;
-      $result->{$layer}->{score_min} -= 2;
-      $result->{conforming_min} = 0;
-      $result->{conforming_max} = 0;
-    }
-  } else {
-    $result->{$layer}->{must}++;
-    $result->{$layer}->{score_max} -= 2;
-    $result->{$layer}->{score_min} -= 2;
-    $result->{conforming_min} = 0;
-    $result->{conforming_max} = 0;
-  }
-} # add_error
+sub check_and_print ($$$) {
+  my ($input, $result, $out) = @_;
+  my $original_input = $out->input;
+  $out->input ($input);
+
+  $input->generate_info_section ($result);
+
+  $input->generate_transfer_sections ($result);
+
+  unless (defined $input->{s}) {
+    ## NOTE: This is an error of the implementation.
+    $result->layer_uncertain ('transfer');
+    $result->generate_result_section;
+    return;
+  }
+
+  my $checker_class = {
+    'text/cache-manifest' => 'WebHACC::Language::CacheManifest',
+    'text/css' => 'WebHACC::Language::CSS',
+    'text/html' => 'WebHACC::Language::HTML',
+    'text/x-webidl' => 'WebHACC::Language::WebIDL',
+
+    'text/xml' => 'WebHACC::Language::XML',
+    'application/atom+xml' => 'WebHACC::Language::XML',
+    'application/rss+xml' => 'WebHACC::Language::XML',
+    'image/svg+xml' => 'WebHACC::Language::XML',
+    'application/xhtml+xml' => 'WebHACC::Language::XML',
+    'application/xml' => 'WebHACC::Language::XML',
+    ## TODO: Should we make all XML MIME Types fall
+    ## into this category?
+
+    ## NOTE: This type has different model from normal XML types.
+    'application/rdf+xml' => 'WebHACC::Language::XML',
+  }->{$input->{media_type}} || 'WebHACC::Language::Default';
+
+  eval qq{ require $checker_class } or die "$0: Loading $checker_class: $@";
+  my $checker = $checker_class->new;
+  $checker->input ($input);
+  $checker->output ($out);
+  $checker->result ($result);
 
-sub check_and_print ($$) {
-  my ($input, $result) = @_;
+  ## TODO: A cache manifest MUST be text/cache-manifest
+  ## TODO: WebIDL media type "text/x-webidl"
 
-  print_http_header_section ($input, $result);
+  $checker->generate_syntax_error_section;
+  $checker->generate_source_string_section;
 
-  my $doc;
-  my $el;
-  my $cssom;
-  my $manifest;
   my @subdoc;
+  $checker->onsubdoc (sub {
+    push @subdoc, shift;
+  });
 
-  if ($input->{media_type} eq 'text/html') {
-    ($doc, $el) = print_syntax_error_html_section ($input, $result);
-    print_source_string_section
-        ($input,
-         \($input->{s}),
-         $input->{charset} || $doc->input_encoding);
-  } elsif ({
-            'text/xml' => 1,
-            'application/atom+xml' => 1,
-            'application/rss+xml' => 1,
-            'image/svg+xml' => 1,
-            'application/xhtml+xml' => 1,
-            'application/xml' => 1,
-            ## TODO: Should we make all XML MIME Types fall
-            ## into this category?
-
-            'application/rdf+xml' => 1, ## NOTE: This type has different model.
-           }->{$input->{media_type}}) {
-    ($doc, $el) = print_syntax_error_xml_section ($input, $result);
-    print_source_string_section ($input,
-                                 \($input->{s}),
-                                 $doc->input_encoding);
-  } elsif ($input->{media_type} eq 'text/css') {
-    $cssom = print_syntax_error_css_section ($input, $result);
-    print_source_string_section
-        ($input, \($input->{s}),
-         $cssom->manakai_input_encoding);
-  } elsif ($input->{media_type} eq 'text/cache-manifest') {
-## TODO: MUST be text/cache-manifest
-    $manifest = print_syntax_error_manifest_section ($input, $result);
-    print_source_string_section ($input, \($input->{s}),
-                                 'utf-8');
-  } else {
-    ## TODO: Change HTTP status code??
-    print_result_unknown_type_section ($input, $result);
-  }
-
-  if (defined $doc or defined $el) {
-    $doc->document_uri ($input->{uri});
-    $doc->manakai_entity_base_uri ($input->{base_uri});
-    print_structure_dump_dom_section ($input, $doc, $el);
-    my $elements = print_structure_error_dom_section
-        ($input, $doc, $el, $result, sub {
-          push @subdoc, shift;
-        });
-    print_table_section ($input, $elements->{table}) if @{$elements->{table}};
-    print_listing_section ({
-      id => 'identifiers', label => 'IDs', heading => 'Identifiers',
-    }, $input, $elements->{id}) if keys %{$elements->{id}};
-    print_listing_section ({
-      id => 'terms', label => 'Terms', heading => 'Terms',
-    }, $input, $elements->{term}) if keys %{$elements->{term}};
-    print_listing_section ({
-      id => 'classes', label => 'Classes', heading => 'Classes',
-    }, $input, $elements->{class}) if keys %{$elements->{class}};
-    print_rdf_section ($input, $elements->{rdf}) if @{$elements->{rdf}};
-  } elsif (defined $cssom) {
-    print_structure_dump_cssom_section ($input, $cssom);
-    ## TODO: CSSOM validation
-    add_error ('structure', {level => 'u'} => $result);
-  } elsif (defined $manifest) {
-    print_structure_dump_manifest_section ($input, $manifest);
-    print_structure_error_manifest_section ($input, $manifest, $result);
-  }
+  $checker->generate_structure_dump_section;
+  $checker->generate_structure_error_section;
+  $checker->generate_additional_sections;
 
   my $id_prefix = 0;
-  for my $subinput (@subdoc) {
-    $subinput->{id_prefix} = 'subdoc-' . ++$id_prefix;
-    $subinput->{nested} = 1;
+  for my $_subinput (@subdoc) {
+    my $subinput = WebHACC::Input::Subdocument->new (++$id_prefix);
+    $subinput->{$_} = $_subinput->{$_} for keys %$_subinput;
     $subinput->{base_uri} = $subinput->{container_node}->base_uri
         unless defined $subinput->{base_uri};
-    my $ebaseuri = htescape ($subinput->{base_uri});
-    push @nav, ['#' . $subinput->{id_prefix} => 'Sub #' . $id_prefix];
-    print STDOUT qq[];
+    $subinput->start_section ($subresult);
+    check_and_print ($subinput => $subresult => $out);
+    $subinput->end_section ($subresult);
   }
-} # check_and_print
 
-sub print_http_header_section ($$) {
-  my ($input, $result) = @_;
-  return unless defined $input->{header_status_code} or
-      defined $input->{header_status_text} or
-      @{$input->{header_field} or []};
-  
-  push @nav, ['#source-header' => 'HTTP Header'] unless $input->{nested};
-  print STDOUT qq[];
-} # print_http_header_section
-
-sub print_syntax_error_html_section ($$) {
-  my ($input, $result) = @_;
-  
-  require Encode;
-  require Whatpm::HTML;
-  
-  print STDOUT qq[
-];
-
-  return ($doc, $el);
-} # print_syntax_error_html_section
-
-sub print_syntax_error_xml_section ($$) {
-  my ($input, $result) = @_;
-  
-  require Message::DOM::XMLParserTemp;
-  
-  print STDOUT qq[
-];
-
-  return ($doc, undef);
-} # print_syntax_error_xml_section
-
-sub get_css_parser () {
-  our $CSSParser;
-  return $CSSParser if $CSSParser;
-
-  require Whatpm::CSS::Parser;
-  my $p = Whatpm::CSS::Parser->new;
-
-  $p->{prop}->{$_} = 1 for qw/
-    alignment-baseline
-    background background-attachment background-color background-image
-    background-position background-position-x background-position-y
-    background-repeat border border-bottom border-bottom-color
-    border-bottom-style border-bottom-width border-collapse border-color
-    border-left border-left-color
-    border-left-style border-left-width border-right border-right-color
-    border-right-style border-right-width
-    border-spacing -manakai-border-spacing-x -manakai-border-spacing-y
-    border-style border-top border-top-color border-top-style border-top-width
-    border-width bottom
-    caption-side clear clip color content counter-increment counter-reset
-    cursor direction display dominant-baseline empty-cells float font
-    font-family font-size font-size-adjust font-stretch
-    font-style font-variant font-weight height left
-    letter-spacing line-height
-    list-style list-style-image list-style-position list-style-type
-    margin margin-bottom margin-left margin-right margin-top marker-offset
-    marks max-height max-width min-height min-width opacity -moz-opacity
-    orphans outline outline-color outline-style outline-width overflow
-    overflow-x overflow-y
-    padding padding-bottom padding-left padding-right padding-top
-    page page-break-after page-break-before page-break-inside
-    position quotes right size table-layout
-    text-align text-anchor text-decoration text-indent text-transform
-    top unicode-bidi vertical-align visibility white-space width widows
-    word-spacing writing-mode z-index
-  /;
-  $p->{prop_value}->{display}->{$_} = 1 for qw/
-    block clip inline inline-block inline-table list-item none
-    table table-caption table-cell table-column table-column-group
-    table-header-group table-footer-group table-row table-row-group
-    compact marker
-  /;
-  $p->{prop_value}->{position}->{$_} = 1 for qw/
-    absolute fixed relative static
-  /;
-  $p->{prop_value}->{float}->{$_} = 1 for qw/
-    left right none
-  /;
-  $p->{prop_value}->{clear}->{$_} = 1 for qw/
-    left right none both
-  /;
-  $p->{prop_value}->{direction}->{ltr} = 1;
-  $p->{prop_value}->{direction}->{rtl} = 1;
-  $p->{prop_value}->{marks}->{crop} = 1;
-  $p->{prop_value}->{marks}->{cross} = 1;
-  $p->{prop_value}->{'unicode-bidi'}->{$_} = 1 for qw/
-    normal bidi-override embed
-  /;
-  for my $prop_name (qw/overflow overflow-x overflow-y/) {
-    $p->{prop_value}->{$prop_name}->{$_} = 1 for qw/
-      visible hidden scroll auto -webkit-marquee -moz-hidden-unscrollable
-    /;
-  }
-  $p->{prop_value}->{visibility}->{$_} = 1 for qw/
-    visible hidden collapse
-  /;
-  $p->{prop_value}->{'list-style-type'}->{$_} = 1 for qw/
-    disc circle square decimal decimal-leading-zero
-    lower-roman upper-roman lower-greek lower-latin
-    upper-latin armenian georgian lower-alpha upper-alpha none
-    hebrew cjk-ideographic hiragana katakana hiragana-iroha
-    katakana-iroha
-  /;
-  $p->{prop_value}->{'list-style-position'}->{outside} = 1;
-  $p->{prop_value}->{'list-style-position'}->{inside} = 1;
-  $p->{prop_value}->{'page-break-before'}->{$_} = 1 for qw/
-    auto always avoid left right
-  /;
-  $p->{prop_value}->{'page-break-after'}->{$_} = 1 for qw/
-    auto always avoid left right
-  /;
-  $p->{prop_value}->{'page-break-inside'}->{auto} = 1;
-  $p->{prop_value}->{'page-break-inside'}->{avoid} = 1;
-  $p->{prop_value}->{'background-repeat'}->{$_} = 1 for qw/
-    repeat repeat-x repeat-y no-repeat
-  /;
-  $p->{prop_value}->{'background-attachment'}->{scroll} = 1;
-  $p->{prop_value}->{'background-attachment'}->{fixed} = 1;
-  $p->{prop_value}->{'font-size'}->{$_} = 1 for qw/
-    xx-small x-small small medium large x-large xx-large
-    -manakai-xxx-large -webkit-xxx-large
-    larger smaller
-  /;
-  $p->{prop_value}->{'font-style'}->{normal} = 1;
-  $p->{prop_value}->{'font-style'}->{italic} = 1;
-  $p->{prop_value}->{'font-style'}->{oblique} = 1;
-  $p->{prop_value}->{'font-variant'}->{normal} = 1;
-  $p->{prop_value}->{'font-variant'}->{'small-caps'} = 1;
-  $p->{prop_value}->{'font-stretch'}->{$_} = 1 for
-      qw/normal wider narrower ultra-condensed extra-condensed
-        condensed semi-condensed semi-expanded expanded
-        extra-expanded ultra-expanded/;
-  $p->{prop_value}->{'text-align'}->{$_} = 1 for qw/
-    left right center justify begin end
-  /;
-  $p->{prop_value}->{'text-transform'}->{$_} = 1 for qw/
-    capitalize uppercase lowercase none
-  /;
-  $p->{prop_value}->{'white-space'}->{$_} = 1 for qw/
-    normal pre nowrap pre-line pre-wrap -moz-pre-wrap
-  /;
-  $p->{prop_value}->{'writing-mode'}->{$_} = 1 for qw/
-    lr rl tb lr-tb rl-tb tb-rl
-  /;
-  $p->{prop_value}->{'text-anchor'}->{$_} = 1 for qw/
-    start middle end
-  /;
-  $p->{prop_value}->{'dominant-baseline'}->{$_} = 1 for qw/
-    auto use-script no-change reset-size ideographic alphabetic
-    hanging mathematical central middle text-after-edge text-before-edge
-  /;
-  $p->{prop_value}->{'alignment-baseline'}->{$_} = 1 for qw/
-    auto baseline before-edge text-before-edge middle central
-    after-edge text-after-edge ideographic alphabetic hanging
-    mathematical
-  /;
-  $p->{prop_value}->{'text-decoration'}->{$_} = 1 for qw/
-    none blink underline overline line-through
-  /;
-  $p->{prop_value}->{'caption-side'}->{$_} = 1 for qw/
-    top bottom left right
-  /;
-  $p->{prop_value}->{'table-layout'}->{auto} = 1;
-  $p->{prop_value}->{'table-layout'}->{fixed} = 1;
-  $p->{prop_value}->{'border-collapse'}->{collapse} = 1;
-  $p->{prop_value}->{'border-collapse'}->{separate} = 1;
-  $p->{prop_value}->{'empty-cells'}->{show} = 1;
-  $p->{prop_value}->{'empty-cells'}->{hide} = 1;
-  $p->{prop_value}->{cursor}->{$_} = 1 for qw/
-    auto crosshair default pointer move e-resize ne-resize nw-resize n-resize
-    se-resize sw-resize s-resize w-resize text wait help progress
-  /;
-  for my $prop (qw/border-top-style border-left-style
-                   border-bottom-style border-right-style outline-style/) {
-    $p->{prop_value}->{$prop}->{$_} = 1 for qw/
-      none hidden dotted dashed solid double groove ridge inset outset
-    /;
-  }
-  for my $prop (qw/color background-color
-                   border-bottom-color border-left-color border-right-color
-                   border-top-color border-color/) {
-    $p->{prop_value}->{$prop}->{transparent} = 1;
-    $p->{prop_value}->{$prop}->{flavor} = 1;
-    $p->{prop_value}->{$prop}->{'-manakai-default'} = 1;
-  }
-  $p->{prop_value}->{'outline-color'}->{invert} = 1;
-  $p->{prop_value}->{'outline-color'}->{'-manakai-invert-or-currentcolor'} = 1;
-  $p->{pseudo_class}->{$_} = 1 for qw/
-    active checked disabled empty enabled first-child first-of-type
-    focus hover indeterminate last-child last-of-type link only-child
-    only-of-type root target visited
-    lang nth-child nth-last-child nth-of-type nth-last-of-type not
-    -manakai-contains -manakai-current
-  /;
-  $p->{pseudo_element}->{$_} = 1 for qw/
-    after before first-letter first-line
-  /;
-
-  return $CSSParser = $p;
-} # get_css_parser
-
-sub print_syntax_error_css_section ($$) {
-  my ($input, $result) = @_;
-
-  print STDOUT qq[
-];
-
-  return $cssom;
-} # print_syntax_error_css_section
-
-sub print_syntax_error_manifest_section ($$) {
-  my ($input, $result) = @_;
-
-  require Whatpm::CacheManifest;
-
-  print STDOUT qq[
-];
-
-  return $manifest;
-} # print_syntax_error_manifest_section
-
-sub print_source_string_section ($$$) {
-  my $input = shift;
-  my $s;
-  unless ($input->{is_char_string}) {
-    require Encode;
-    my $enc = Encode::find_encoding ($_[1]); ## TODO: charset name -> Perl name
-    return unless $enc;
-
-    $s = \($enc->decode (${$_[0]}));
-  } else {
-    $s = $_[0];
-  }
-
-  my $i = 1;                             
-  push @nav, ['#source-string' => 'Source'] unless $input->{nested};
-  print STDOUT qq[
-";
-} # print_input_string_section
-
-sub print_document_tree ($$) {
-  my ($input, $node) = @_;
-
-  my $r = '';
-
-  my @node = ($node);
-  while (@node) {
-    my $child = shift @node;
-    unless (ref $child) {
-      $r .= $child;
-      next;
-    }
-
-    my $node_id = $input->{id_prefix} . 'node-'.refaddr $child;
-    my $nt = $child->node_type;
-    if ($nt == $child->ELEMENT_NODE) {
-      my $child_nsuri = $child->namespace_uri;
-      $r .= qq[] . htescape ($child->tag_name) .
-          ''; ## ISSUE: case
-
-      if ($child->has_attributes) {
-        $r .= '';
-        for my $attr (sort {$a->[0] cmp $b->[0]} map { [$_->name, $_->value, $_->namespace_uri, 'node-'.refaddr $_] }
-                      @{$child->attributes}) {
-          $r .= qq[] . htescape ($attr->[0]) . ' = '; ## ISSUE: case?
-          $r .= '' . htescape ($attr->[1]) . '  ';
-      }
-
-      if ($child->has_child_nodes) {
-        $r .= '';
-        unshift @node, @{$child->child_nodes}, ' ' . htescape ($child->data) . ' <[CDATA[' . htescape ($child->data) . ' ]]>Document';
-      $r .= qq[];
-      my $cp = $child->manakai_charset;
-      if (defined $cp) {
-        $r .= qq[charset parameter = ];
-        $r .= htescape ($cp) . qq[inputEncoding = ];
-      my $ie = $child->input_encoding;
-      if (defined $ie) {
-        $r .= qq[@{[htescape ($ie)]}];
-        if ($child->manakai_has_bom) {
-          $r .= qq[ (with BOM null)];
-      }
-      $r .= qq[@{[scalar get_text ('manakaiIsHTML:'.($child->manakai_is_html?1:0))]} ];
-      $r .= qq[@{[scalar get_text ('manakaiCompatMode:'.$child->manakai_compat_mode)]} ];
-      unless ($child->manakai_is_html) {
-        $r .= qq[XML version = @{[htescape ($child->xml_version)]} ];
-        if (defined $child->xml_encoding) {
-          $r .= qq[XML encoding = @{[htescape ($child->xml_encoding)]} ];
-        } else {
-          $r .= qq[XML encoding = (null) ];
-        }
-        $r .= qq[XML standalone = @{[$child->xml_standalone ? 'true' : 'false']} ];
-      }
-      $r .= qq[ ];
-      if ($child->has_child_nodes) {
-        $r .= '';
-        unshift @node, @{$child->child_nodes}, '  ';
-      }
-    } elsif ($nt == $child->DOCUMENT_TYPE_NODE) {
-      $r .= qq'<!DOCTYPE>';
-      $r .= qq[Name = @{[htescape ($child->name)]}  ];
-      $r .= qq[Public identifier = @{[htescape ($child->public_id)]}  ];
-      $r .= qq[System identifier = @{[htescape ($child->system_id)]}  ];
-      $r .= ' <?@{[htescape ($child->target)]} @{[htescape ($child->data)]} ?>@{[$child->node_type]} @{[htescape ($child->node_name)]} '; # error
-    }
-  }
-
-  $r .= ' ';
-  print STDOUT $r;
-} # print_document_tree
-
-sub print_structure_dump_dom_section ($$$) {
-  my ($input, $doc, $el) = @_;
-
-  print STDOUT qq[
-
-
Document Tree 
-];
-  push @nav, [qq[#$input->{id_prefix}document-tree] => 'Tree']
-      unless $input->{nested};
-
-  print_document_tree ($input, $el || $doc);
-
-  print STDOUT qq[];
-} # print_structure_dump_dom_section
-
-sub print_structure_dump_cssom_section ($$) {
-  my ($input, $cssom) = @_;
-
-  print STDOUT qq[
-];
-} # print_structure_dump_cssom_section
-
-sub print_structure_dump_manifest_section ($$) {
-  my ($input, $manifest) = @_;
-
-  print STDOUT qq[
-];
-} # print_structure_dump_manifest_section
-
-sub print_structure_error_dom_section ($$$$$) {
-  my ($input, $doc, $el, $result, $onsubdoc) = @_;
-
-  print STDOUT qq[];
-
-  return $elements;
-} # print_structure_error_dom_section
-
-sub print_structure_error_manifest_section ($$$) {
-  my ($input, $manifest, $result) = @_;
-
-  print STDOUT qq[];
-} # print_structure_error_manifest_section
-
-sub print_table_section ($$) {
-  my ($input, $tables) = @_;
-  
-  push @nav, [qq[#$input->{id_prefix}tables] => 'Tables']
-      unless $input->{nested};
-  print STDOUT qq[
-];
-} # print_table_section
-
-sub print_listing_section ($$$) {
-  my ($opt, $input, $ids) = @_;
-  
-  push @nav, ['#' . $input->{id_prefix} . $opt->{id} => $opt->{label}]
-      unless $input->{nested};
-  print STDOUT qq[
-];
-} # print_listing_section
-
-sub print_rdf_section ($$$) {
-  my ($input, $rdfs) = @_;
-  
-  push @nav, ['#' . $input->{id_prefix} . 'rdf' => 'RDF']
-      unless $input->{nested};
-  print STDOUT qq[
-];
-} # print_rdf_section
-
-sub get_rdf_resource_html ($) {
-  my $resource = shift;
-  if (defined $resource->{uri}) {
-    my $euri = htescape ($resource->{uri});
-    return '<' . $euri .
-        ' >';
-  } elsif (defined $resource->{bnodeid}) {
-    return htescape ('_:' . $resource->{bnodeid});
-  } elsif ($resource->{nodes}) {
-    return '(rdf:XMLLiteral)';
-  } elsif (defined $resource->{value}) {
-    my $elang = htescape (defined $resource->{language}
-                              ? $resource->{language} : '');
-    my $r = qq[] . htescape ($resource->{value}) . ' ';
-    if (defined $resource->{datatype}) {
-      my $euri = htescape ($resource->{datatype});
-      $r .= '^^<' . $euri .
-          ' >';
-    } elsif (length $resource->{language}) {
-      $r .= '@' . htescape ($resource->{language});
-    }
-    return $r;
-  } else {
-    return '??';
-  }
-} # get_rdf_resource_html
-
-sub print_result_section ($) {
-  my $result = shift;
-
-  print STDOUT qq[
-
-
Result ];
-
-  if ($result->{unsupported} and $result->{conforming_max}) {  
-    print STDOUT qq[
The conformance
-        checker cannot decide whether the document is conforming or
-        not, since the document contains one or more unsupported
-        features.  The document might or might not be conforming.
];
-  } elsif ($result->{conforming_min}) {
-    print STDOUT qq[
No conformance-error is
-        found in this document.
];
-  } elsif ($result->{conforming_max}) {
-    print STDOUT qq[
This document
-        is likely non -conforming , but in rare case
-        it might be conforming.
];
-  } else {
-    print STDOUT qq[
This document is 
-        non -conforming
];
-  }
-
-  print STDOUT qq[
-
-MUST ‐level
-ErrorsSHOULD ‐level
-ErrorsWarnings Score  ];
-
-  my $must_error = 0;
-  my $should_error = 0;
-  my $warning = 0;
-  my $score_min = 0;
-  my $score_max = 0;
-  my $score_base = 20;
-  my $score_unit = $score_base / 100;
-  for (
-    [Transfer => 'transfer', ''],
-    [Character => 'char', ''],
-    [Syntax => 'syntax', '#parse-errors'],
-    [Structure => 'structure', '#document-errors'],
-  ) {
-    $must_error += ($result->{$_->[1]}->{must} += 0);
-    $should_error += ($result->{$_->[1]}->{should} += 0);
-    $warning += ($result->{$_->[1]}->{warning} += 0);
-    $score_min += (($result->{$_->[1]}->{score_min} *= $score_unit) += $score_base);
-    $score_max += (($result->{$_->[1]}->{score_max} *= $score_unit) += $score_base);
-
-    my $uncertain = $result->{$_->[1]}->{unsupported} ? '?' : '';
-    my $label = $_->[0];
-    if ($result->{$_->[1]}->{must} or
-        $result->{$_->[1]}->{should} or
-        $result->{$_->[1]}->{warning} or
-        $result->{$_->[1]}->{unsupported}) {
-      $label = qq[$label ];
-    }
-
-    print STDOUT qq[$label $result->{$_->[1]}->{must}$uncertain $result->{$_->[1]}->{should}$uncertain $result->{$_->[1]}->{warning}$uncertain ];
-    if ($uncertain) {
-      print qq[−∞..$result->{$_->[1]}->{score_max} ];
-    } elsif ($result->{$_->[1]}->{score_min} != $result->{$_->[1]}->{score_max}) {
-      print qq[$result->{$_->[1]}->{score_min}..$result->{$_->[1]}->{score_max} $result->{$_->[1]}->{score_min} ];
-    }
-  }
-
-  $score_max += $score_base;
-
-  print STDOUT qq[
-Semantics 0? 0? 0? −∞..$score_base  
-Total 
-$must_error? 
-$should_error? 
-$warning? 
-−∞..$score_max 
-
-
Important : This conformance checking service
-is under development .  The result above might be wrong .
-
-
Input Error : @{[htescape ($input->{error_status_text})]}
-
Line $line  column $column];
-    } else {
-      $line = $line - 1 || 1;
-      $r = qq[Line $line ];
-    }
-  }
-
-  if (defined $err->{node}) {
-    $r .= ' ' if length $r;
-    $r .= get_node_link ($input, $err->{node});
-  }
-
-  if (defined $err->{index}) {
-    if (length $r) {
-      $r .= ', Index ' . (0+$err->{index});
-    } else {
-      $r .= "Index "
-          . (0+$err->{index}) . ' ';
-    }
-  }
-
-  if (defined $err->{value}) {
-    $r .= ' ' if length $r;
-    $r .= '' . htescape ($err->{value}) . 'MUST ‐level
-        errorSHOULD ‐level
-        errorWarning Not
-        supported Information $elevel ] .
-      htescape (get_node_path ($_[1])) . qq[ ];
-} # get_node_link
-
-{
-  my $Msg = {};
-
-sub load_text_catalog ($) {
-  my $lang = shift; # MUST be a canonical lang name
-  open my $file, '<:utf8', "cc-msg.$lang.txt"
-      or die "$0: cc-msg.$lang.txt: $!";
-  while (<$file>) {
-    if (s/^([^;]+);([^;]*);//) {
-      my ($type, $cls, $msg) = ($1, $2, $_);
-      $msg =~ tr/\x0D\x0A//d;
-      $Msg->{$type} = [$cls, $msg];
-    }
-  }
-} # load_text_catalog
-
-sub get_text ($) {
-  my ($type, $level, $node) = @_;
-  $type = $level . ':' . $type if defined $level;
-  $level = 'm' unless defined $level;
-  my @arg;
-  {
-    if (defined $Msg->{$type}) {
-      my $msg = $Msg->{$type}->[1];
-      $msg =~ s{\$([0-9]+) }{
-        defined $arg[$1] ? htescape ($arg[$1]) : '(undef)';
-      }ge;
-      $msg =~ s{{\@([A-Za-z0-9:_.-]+)} }{
-        UNIVERSAL::can ($node, 'get_attribute_ns')
-            ? htescape ($node->get_attribute_ns (undef, $1)) : ''
-      }ge;
-      $msg =~ s{{\@} }{
-        UNIVERSAL::can ($node, 'value') ? htescape ($node->value) : ''
-      }ge;
-      $msg =~ s{{local-name} }{
-        UNIVERSAL::can ($node, 'manakai_local_name')
-          ? htescape ($node->manakai_local_name) : ''
-      }ge;
-      $msg =~ s{{element-local-name} }{
-        (UNIVERSAL::can ($node, 'owner_element') and
-         $node->owner_element)
-          ? htescape ($node->owner_element->manakai_local_name)
-          : ''
-      }ge;
-      return ($type, 'level-' . $level . ' ' . $Msg->{$type}->[0], $msg);
-    } elsif ($type =~ s/:([^:]*)$//) {
-      unshift @arg, $1;
-      redo;
-    }
-  }
-  return ($type, 'level-'.$level, htescape ($_[0]));
-} # get_text
-
-}
-
-sub get_input_document ($$) {
-  my ($http, $dom) = @_;
-
-  my $request_uri = $http->get_parameter ('uri');
-  my $r = {};
-  if (defined $request_uri and length $request_uri) {
-    my $uri = $dom->create_uri_reference ($request_uri);
-    unless ({
-             http => 1,
-            }->{lc $uri->uri_scheme}) {
-      return {uri => $request_uri, request_uri => $request_uri,
-              error_status_text => 'URI scheme not allowed'};
-    }
-
-    require Message::Util::HostPermit;
-    my $host_permit = new Message::Util::HostPermit;
-    $host_permit->add_rule (<check ($uri->uri_host, $uri->uri_port || 80)) {
-      return {uri => $request_uri, request_uri => $request_uri,
-              error_status_text => 'Connection to the host is forbidden'};
-    }
-
-    require LWP::UserAgent;
-    my $ua = WDCC::LWPUA->new;
-    $ua->{wdcc_dom} = $dom;
-    $ua->{wdcc_host_permit} = $host_permit;
-    $ua->agent ('Mozilla'); ## TODO: for now.
-    $ua->parse_head (0);
-    $ua->protocols_allowed ([qw/http/]);
-    $ua->max_size (1000_000);
-    my $req = HTTP::Request->new (GET => $request_uri);
-    $req->header ('Accept-Encoding' => 'identity, *; q=0');
-    my $res = $ua->request ($req);
-    ## TODO: 401 sets |is_success| true.
-    if ($res->is_success or $http->get_parameter ('error-page')) {
-      $r->{base_uri} = $res->base; ## NOTE: It does check |Content-Base|, |Content-Location|, and