/[pub]/test/html-webhacc/cc.cgi

Diff of /test/html-webhacc/cc.cgi

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-revision 1.3 by wakaba,
Wed Jun 27 13:30:15 2007 UTC
+revision 1.48 by wakaba,
Sat Apr 12 15:57:56 2008 UTC
 Line 1
  #!/usr/bin/perl
  use strict;
+ use utf8;
  use lib qw[/home/httpd/html/www/markup/html/whatpm
-            /home/wakaba/work/manakai/lib
+            /home/wakaba/work/manakai2/lib];
-            /home/wakaba/public_html/-temp/wiki/lib];
  use CGI::Carp qw[fatalsToBrowser];
  use Scalar::Util qw[refaddr];
+ use Time::HiRes qw/time/;
- use SuikaWiki::Input::HTTP; ## TODO: Use some better CGI module
  sub htescape ($) {
    my $s = $_[0];
-Line 15 
 sub htescape ($) {
+Line 14 
 sub htescape ($) {
    $s =~ s/</&lt;/g;
    $s =~ s/>/&gt;/g;
    $s =~ s/"/&quot;/g;
-   $s =~ s!([\x00-\x09\x0B-\x1F\x7F-\x80])!sprintf '<var>U+%04X</var>', ord $1!ge;
+   $s =~ s{([\x00-\x09\x0B-\x1F\x7F-\xA0\x{FEFF}\x{FFFC}-\x{FFFF}])}{
+     sprintf '<var>U+%04X</var>', ord $1;
+   }ge;
    return $s;
  } # htescape
- my $http = SuikaWiki::Input::HTTP->new;
+   my @nav;
+   my %time;
- ## TODO: _charset_
+   require Message::DOM::DOMImplementation;
+   my $dom = Message::DOM::DOMImplementation->new;
-   my $input_format = $http->parameter ('i') || 'text/html';
+ {
-   my $inner_html_element = $http->parameter ('e');
+   use Message::CGI::HTTP;
-   my $input_uri = 'thismessage:/';
+   my $http = Message::CGI::HTTP->new;
-   my $s = $http->parameter ('s');
+   if ($http->get_meta_variable ('PATH_INFO') ne '/') {
-   if (length $s > 1000_000) {
+     print STDOUT "Status: 404 Not Found\nContent-Type: text/plain; charset=us-ascii\n\n400";
-     print STDOUT "Status: 400 Document Too Long\nContent-Type: text/plain; charset=us-ascii\n\nToo long";
      exit;
    }
-   my @nav;
+   binmode STDOUT, ':utf8';
+   $| = 1;
+   load_text_catalog ('en'); ## TODO: conneg
    print STDOUT qq[Content-Type: text/html; charset=utf-8
  <!DOCTYPE html>
-Line 43 
 my $http = SuikaWiki::Input::HTTP->new;
+Line 47 
 my $http = SuikaWiki::Input::HTTP->new;
  <link rel="stylesheet" href="../cc-style.css" type="text/css">
  </head>
  <body>
- <h1>Web Document Conformance Checker (<em>beta</em>)</h1>
+ <h1><a href="../cc-interface">Web Document Conformance Checker</a>
+ (<em>beta</em>)</h1>
+ ];
- <div id="document-info" section="section">
+   $| = 0;
+   my $input = get_input_document ($http, $dom);
+   my $char_length = 0;
+   print qq[
+ <div id="document-info" class="section">
  <dl>
+ <dt>Request URI</dt>
+     <dd><code class="URI" lang="">&lt;<a href="@{[htescape $input->{request_uri}]}">@{[htescape $input->{request_uri}]}</a>&gt;</code></dd>
  <dt>Document URI</dt>
-     <dd><code class="URI" lang="">&lt;<a href="@{[htescape $input_uri]}">@{[htescape $input_uri]}</a>&gt;</code></dd>
+     <dd><code class="URI" lang="">&lt;<a href="@{[htescape $input->{uri}]}" id=anchor-document-uri>@{[htescape $input->{uri}]}</a>&gt;</code>
- <dt>Internet Media Type</dt>
+     <script>
-     <dd><code class="MIME" lang="en">@{[htescape $input_format]}</code></dd>
+       document.title = '<'
+           + document.getElementById ('anchor-document-uri').href + '> \\u2014 '
+           + document.title;
+     </script></dd>
  ]; # no </dl> yet
    push @nav, ['#document-info' => 'Information'];
-   require Message::DOM::DOMImplementation;
+ if (defined $input->{s}) {
-   my $dom = Message::DOM::DOMImplementation->____new;
+   $char_length = length $input->{s};
-   my $doc;
-   my $el;
-   if ($input_format eq 'text/html') {
-     require Encode;
-     require Whatpm::HTML;
-     $s = Encode::decode ('utf-8', $s);
-     print STDOUT qq[
+   print STDOUT qq[
+ <dt>Base URI</dt>
+     <dd><code class="URI" lang="">&lt;<a href="@{[htescape $input->{base_uri}]}">@{[htescape $input->{base_uri}]}</a>&gt;</code></dd>
+ <dt>Internet Media Type</dt>
+     <dd><code class="MIME" lang="en">@{[htescape $input->{media_type}]}</code>
+     @{[$input->{media_type_overridden} ? '<em>(overridden)</em>' : defined $input->{official_type} ? $input->{media_type} eq $input->{official_type} ? '' : '<em>(sniffed; official type is: <code class=MIME lang=en>'.htescape ($input->{official_type}).'</code>)' : '<em>(sniffed)</em>']}</dd>
  <dt>Character Encoding</dt>
-     <dd>(none)</dd>
+     <dd>@{[defined $input->{charset} ? '<code class="charset" lang="en">'.htescape ($input->{charset}).'</code>' : '(none)']}
+     @{[$input->{charset_overridden} ? '<em>(overridden)</em>' : '']}</dd>
+ <dt>Length</dt>
+     <dd>$char_length byte@{[$char_length == 1 ? '' : 's']}</dd>
  </dl>
  </div>
- <div id="source-string" class="section">
+ <script src="../cc-script.js"></script>
- <h2>Document Source</h2>
  ];
-     push @nav, ['#source-string' => 'Source'];
-     print_source_string (\$s);
-     print STDOUT qq[
- </div>
- <div id="parse-errors" class="section">
+   $input->{id_prefix} = '';
- <h2>Parse Errors</h2>
+   #$input->{nested} = 0;
+   my $result = {conforming_min => 1, conforming_max => 1};
+   check_and_print ($input => $result);
+   print_result_section ($result);
+ } else {
+   print STDOUT qq[</dl></div>];
+   print_result_input_error_section ($input);
+ }
- <ul>
+   print STDOUT qq[
+ <ul class="navigation" id="nav-items">
+ ];
+   for (@nav) {
+     print STDOUT qq[<li><a href="$_->[0]">$_->[1]</a></li>];
+   }
+   print STDOUT qq[
+ </ul>
+ </body>
+ </html>
  ];
-   push @nav, ['#parse-errors' => 'Parse Error'];
-   my $onerror = sub {
+   for (qw/decode parse parse_html parse_xml parse_manifest
-     my (%opt) = @_;
+           check check_manifest/) {
-     if ($opt{column} > 0) {
+     next unless defined $time{$_};
-       print STDOUT qq[<li><a href="#line-$opt{line}">Line $opt{line}</a> column $opt{column}: ];
+     open my $file, '>>', ".cc-$_.txt" or die ".cc-$_.txt: $!";
+     print $file $char_length, "\t", $time{$_}, "\n";
+   }
+ exit;
+ }
+ sub add_error ($$$) {
+   my ($layer, $err, $result) = @_;
+   if (defined $err->{level}) {
+     if ($err->{level} eq 's') {
+       $result->{$layer}->{should}++;
+       $result->{$layer}->{score_min} -= 2;
+       $result->{conforming_min} = 0;
+     } elsif ($err->{level} eq 'w' or $err->{level} eq 'g') {
+       $result->{$layer}->{warning}++;
+     } elsif ($err->{level} eq 'u' or $err->{level} eq 'unsupported') {
+       $result->{$layer}->{unsupported}++;
+       $result->{unsupported} = 1;
+     } elsif ($err->{level} eq 'i') {
+       #
      } else {
-       $opt{line}--;
+       $result->{$layer}->{must}++;
-       print STDOUT qq[<li><a href="#line-$opt{line}">Line $opt{line}</a>: ];
+       $result->{$layer}->{score_max} -= 2;
+       $result->{$layer}->{score_min} -= 2;
+       $result->{conforming_min} = 0;
+       $result->{conforming_max} = 0;
      }
-     print STDOUT qq[@{[htescape $opt{type}]}</li>\n];
+   } else {
-   };
+     $result->{$layer}->{must}++;
+     $result->{$layer}->{score_max} -= 2;
+     $result->{$layer}->{score_min} -= 2;
+     $result->{conforming_min} = 0;
+     $result->{conforming_max} = 0;
+   }
+ } # add_error
-   $doc = $dom->create_document;
+ sub check_and_print ($$) {
-   if (defined $inner_html_element and length $inner_html_element) {
+   my ($input, $result) = @_;
-     $el = $doc->create_element_ns
-         ('http://www.w3.org/1999/xhtml', [undef, $inner_html_element]);
+   print_http_header_section ($input, $result);
-     Whatpm::HTML->set_inner_html ($el, $s, $onerror);
+   my $doc;
+   my $el;
+   my $cssom;
+   my $manifest;
+   my @subdoc;
+   if ($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, \($input->{s}),
+                                  'utf-8');
    } else {
-     Whatpm::HTML->parse_string ($s => $doc, $onerror);
+     ## TODO: Change HTTP status code??
+     print_result_unknown_type_section ($input, $result);
    }
-   print STDOUT qq[
+   if (defined $doc or defined $el) {
- </ul>
+     $doc->document_uri ($input->{uri});
- </div>
+     $doc->manakai_entity_base_uri ($input->{base_uri});
- ];
+     print_structure_dump_dom_section ($input, $doc, $el);
-   } elsif ($input_format eq 'application/xhtml+xml') {
+     my $elements = print_structure_error_dom_section
-     require Message::DOM::XMLParserTemp;
+         ($input, $doc, $el, $result, sub {
-     require Encode;
+           push @subdoc, shift;
+         });
-     my $t = Encode::decode ('utf-8', $s);
+     print_table_section ($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_uri_section ($input, $elements->{uri}) if keys %{$elements->{uri}};
+     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);
+   }
-     print STDOUT qq[
+   my $id_prefix = 0;
- <dt>Character Encoding</dt>
+   for my $subinput (@subdoc) {
-     <dd>(none)</dd>
+     $subinput->{id_prefix} = 'subdoc-' . ++$id_prefix;
- </dl>
+     $subinput->{nested} = 1;
- </div>
+     $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 #' . $id_prefix];
+     print STDOUT qq[<div id="$subinput->{id_prefix}" class=section>
+       <h2>Subdocument #$id_prefix</h2>
+       <dl>
+       <dt>Internet Media Type</dt>
+         <dd><code class="MIME" lang="en">@{[htescape $subinput->{media_type}]}</code>
+       <dt>Container Node</dt>
+         <dd>@{[get_node_link ($input, $subinput->{container_node})]}</dd>
+       <dt>Base <abbr title="Uniform Resource Identifiers">URI</abbr></dt>
+         <dd><code class=URI>&lt;<a href="$ebaseuri">$ebaseuri</a>></code></dd>
+       </dl>];
- <div id="source-string" class="section">
+     $subinput->{id_prefix} .= '-';
- <h2>Document Source</h2>
+     check_and_print ($subinput => $result);
+     print STDOUT qq[</div>];
+   }
+ } # check_and_print
+ sub print_http_header_section ($$) {
+   my ($input, $result) = @_;
+   return unless defined $input->{header_status_code} or
+       defined $input->{header_status_text} or
+       @{$input->{header_field} or []};
+   push @nav, ['#source-header' => 'HTTP Header'] unless $input->{nested};
+   print STDOUT qq[<div id="$input->{id_prefix}source-header" class="section">
+ <h2>HTTP Header</h2>
+ <p><strong>Note</strong>: Due to the limitation of the
+ network library in use, the content of this section might
+ not be the real header.</p>
+ <table><tbody>
  ];
-     push @nav, ['#source-string' => 'Source'];
-     print_source_string (\$t);
-     print STDOUT qq[
- </div>
- <div id="parse-errors" class="section">
+   if (defined $input->{header_status_code}) {
+     print STDOUT qq[<tr><th scope="row">Status code</th>];
+     print STDOUT qq[<td><code>@{[htescape ($input->{header_status_code})]}</code></td></tr>];
+   }
+   if (defined $input->{header_status_text}) {
+     print STDOUT qq[<tr><th scope="row">Status text</th>];
+     print STDOUT qq[<td><code>@{[htescape ($input->{header_status_text})]}</code></td></tr>];
+   }
+   for (@{$input->{header_field}}) {
+     print STDOUT qq[<tr><th scope="row"><code>@{[htescape ($_->[0])]}</code></th>];
+     print STDOUT qq[<td><code>@{[htescape ($_->[1])]}</code></td></tr>];
+   }
+   print STDOUT qq[</tbody></table></div>];
+ } # print_http_header_section
+ sub print_syntax_error_html_section ($$) {
+   my ($input, $result) = @_;
+   require Encode;
+   require Whatpm::HTML;
+   print STDOUT qq[
+ <div id="$input->{id_prefix}parse-errors" class="section">
  <h2>Parse Errors</h2>
- <ul>
+ <dl id="$input->{id_prefix}parse-errors-list">];
- ];
+   push @nav, ['#parse-errors' => 'Parse Error'] unless $input->{nested};
-   push @nav, ['#parse-errors' => 'Parse Error'];
+   my $onerror = sub {
+     my (%opt) = @_;
+     my ($type, $cls, $msg) = get_text ($opt{type}, $opt{level});
+     print STDOUT qq[<dt class="$cls">], get_error_label ($input, \%opt),
+         qq[</dt>];
+     $type =~ tr/ /-/;
+     $type =~ s/\|/%7C/g;
+     $msg .= qq[ [<a href="../error-description#@{[htescape ($type)]}">Description</a>]];
+     print STDOUT qq[<dd class="$cls">], get_error_level_label (\%opt);
+     print STDOUT qq[$msg</dd>\n];
+     add_error ('syntax', \%opt => $result);
+   };
+   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} ||= 'windows-1252'; ## TODO: for now.
+     my $time1 = time;
+     my $t = \($input->{s});
+     unless ($input->{is_char_string}) {
+       $t = \(Encode::decode ($input->{charset}, $$t));
+     }
+     $time{decode} = time - $time1;
+     $el = $doc->create_element_ns
+         ('http://www.w3.org/1999/xhtml', [undef, $inner_html_element]);
+     $time1 = time;
+     Whatpm::HTML->set_inner_html ($el, $$t, $onerror);
+     $time{parse} = time - $time1;
+   } else {
+     my $time1 = time;
+     if ($input->{is_char_string}) {
+       Whatpm::HTML->parse_char_string ($input->{s} => $doc, $onerror);
+     } else {
+       Whatpm::HTML->parse_byte_string
+           ($input->{charset}, $input->{s} => $doc, $onerror);
+     }
+     $time{parse_html} = time - $time1;
+   }
+   $doc->manakai_charset ($input->{official_charset})
+       if defined $input->{official_charset};
+   print STDOUT qq[</dl></div>];
+   return ($doc, $el);
+ } # print_syntax_error_html_section
+ sub print_syntax_error_xml_section ($$) {
+   my ($input, $result) = @_;
+   require Message::DOM::XMLParserTemp;
+   print STDOUT qq[
+ <div id="$input->{id_prefix}parse-errors" class="section">
+ <h2>Parse Errors</h2>
+ <dl id="$input->{id_prefix}parse-errors-list">];
+   push @nav, ['#parse-errors' => 'Parse Error'] unless $input->{prefix};
    my $onerror = sub {
      my $err = shift;
      my $line = $err->location->line_number;
-     print STDOUT qq[<li><a href="#line-$line">Line $line</a> column ];
+     print STDOUT qq[<dt><a href="#$input->{id_prefix}line-$line">Line $line</a> column ];
-     print STDOUT $err->location->column_number, ": ";
+     print STDOUT $err->location->column_number, "</dt><dd>";
-     print STDOUT htescape $err->text, "</li>\n";
+     print STDOUT htescape $err->text, "</dd>\n";
+     add_error ('syntax', {type => $err->text,
+                 level => [
+                           $err->SEVERITY_FATAL_ERROR => 'm',
+                           $err->SEVERITY_ERROR => 'm',
+                           $err->SEVERITY_WARNING => 's',
+                          ]->[$err->severity]} => $result);
      return 1;
    };
-   open my $fh, '<', \$s;
+   my $t = \($input->{s});
-   $doc = Message::DOM::XMLParserTemp->parse_byte_stream
+   if ($input->{is_char_string}) {
-       ($fh => $dom, $onerror, charset => 'utf-8');
+     require Encode;
+     $t = \(Encode::encode ('utf8', $$t));
-     print STDOUT qq[
+     $input->{charset} = 'utf-8';
- </ul>
- </div>
- ];
-   } else {
-     print STDOUT qq[
- </dl>
- <div id="result-summary" class="section">
- <p><em>Media type <code class="MIME" lang="en">@{[htescape $input_format]}</code> is not supported!</em></p>
- </div>
- ];
-     push @nav, ['#result-summary' => 'Result'];
    }
+   my $time1 = time;
+   open my $fh, '<', $t;
+   my $doc = Message::DOM::XMLParserTemp->parse_byte_stream
+       ($fh => $dom, $onerror, charset => $input->{charset});
+   $time{parse_xml} = time - $time1;
+   $doc->manakai_charset ($input->{official_charset})
+       if defined $input->{official_charset};
+   print STDOUT qq[</dl></div>];
+   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
+   /;
-   if (defined $doc or defined $el) {
+   return $CSSParser = $p;
-     print STDOUT qq[
+ } # get_css_parser
- <div id="document-tree" class="section">
- <h2>Document Tree</h2>
- ];
-     push @nav, ['#document-tree' => 'Tree'];
-     print_document_tree ($el || $doc);
+ sub print_syntax_error_css_section ($$) {
+   my ($input, $result) = @_;
-     print STDOUT qq[
+   print STDOUT qq[
- </div>
+ <div id="$input->{id_prefix}parse-errors" class="section">
+ <h2>Parse Errors</h2>
- <div id="document-errors" class="section">
+ <dl id="$input->{id_prefix}parse-errors-list">];
- <h2>Document Errors</h2>
+   push @nav, ['#parse-errors' => 'Parse Error'] unless $input->{nested};
- <ul>
+   my $p = get_css_parser ();
- ];
+   $p->init;
-     push @nav, ['#document-errors' => 'Document Error'];
+   $p->{onerror} = sub {
+     my (%opt) = @_;
+     my ($type, $cls, $msg) = get_text ($opt{type}, $opt{level});
+     if ($opt{token}) {
+       print STDOUT qq[<dt class="$cls"><a href="#$input->{id_prefix}line-$opt{token}->{line}">Line $opt{token}->{line}</a> column $opt{token}->{column}];
+     } else {
+       print STDOUT qq[<dt class="$cls">Unknown location];
+     }
+     if (defined $opt{value}) {
+       print STDOUT qq[ (<code>@{[htescape ($opt{value})]}</code>)];
+     } elsif (defined $opt{token}) {
+       print STDOUT qq[ (<code>@{[htescape (Whatpm::CSS::Tokenizer->serialize_token ($opt{token}))]}</code>)];
+     }
+     $type =~ tr/ /-/;
+     $type =~ s/\|/%7C/g;
+     $msg .= qq[ [<a href="../error-description#@{[htescape ($type)]}">Description</a>]];
+     print STDOUT qq[<dd class="$cls">], get_error_level_label (\%opt);
+     print STDOUT qq[$msg</dd>\n];
-     require Whatpm::ContentChecker;
+     add_error ('syntax', \%opt => $result);
-     my $onerror = sub {
+   };
-       my %opt = @_;
+   $p->{href} = $input->{uri};
-       print STDOUT qq[<li><a href="#node-@{[refaddr $opt{node}]}">],
+   $p->{base_uri} = $input->{base_uri};
-           htescape get_node_path ($opt{node}),
-           "</a>: ", htescape $opt{type}, "</li>\n";
-     };
-     if ($el) {
+ #  if ($parse_mode eq 'q') {
-       Whatpm::ContentChecker->check_element ($el, $onerror);
+ #    $p->{unitless_px} = 1;
+ #    $p->{hashless_color} = 1;
+ #  }
+ ## TODO: Make $input->{s} a ref.
+   my $s = \$input->{s};
+   my $charset;
+   unless ($input->{is_char_string}) {
+     require Encode;
+     if (defined $input->{charset}) {## TODO: IANA->Perl
+       $charset = $input->{charset};
+       $s = \(Encode::decode ($input->{charset}, $$s));
      } else {
-       Whatpm::ContentChecker->check_document ($doc, $onerror);
+       ## TODO: charset detection
+       $s = \(Encode::decode ($charset = 'utf-8', $$s));
      }
-     print STDOUT qq[
- </ul>
- </div>
- ];
    }
+   my $cssom = $p->parse_char_string ($$s);
+   $cssom->manakai_input_encoding ($charset) if defined $charset;
-   ## TODO: Show result
+   print STDOUT qq[</dl></div>];
+   return $cssom;
+ } # print_syntax_error_css_section
+ sub print_syntax_error_manifest_section ($$) {
+   my ($input, $result) = @_;
+   require Whatpm::CacheManifest;
    print STDOUT qq[
- <ul class="navigation" id="nav-items">
+ <div id="$input->{id_prefix}parse-errors" class="section">
- ];
+ <h2>Parse Errors</h2>
-   for (@nav) {
-     print STDOUT qq[<li><a href="$_->[0]">$_->[1]</a></li>];
-   }
-   print STDOUT qq[
- </ul>
- </body>
- </html>
- ];
- exit;
+ <dl id="$input->{id_prefix}parse-errors-list">];
+   push @nav, ['#parse-errors' => 'Parse Error'] unless $input->{nested};
- sub print_source_string ($) {
+   my $onerror = sub {
-   my $s = $_[0];
+     my (%opt) = @_;
-   my $i = 1;
+     my ($type, $cls, $msg) = get_text ($opt{type}, $opt{level});
-   print STDOUT qq[<ol lang="">\n];
+     print STDOUT qq[<dt class="$cls">], get_error_label ($input, \%opt),
-   while ($$s =~ /\G([^\x0A]*?)\x0D?\x0A/gc) {
+         qq[</dt>];
-     print STDOUT qq[<li id="line-$i">], htescape $1, "</li>\n";
+     $type =~ tr/ /-/;
-     $i++;
+     $type =~ s/\|/%7C/g;
+     $msg .= qq[ [<a href="../error-description#@{[htescape ($type)]}">Description</a>]];
+     print STDOUT qq[<dd class="$cls">], get_error_level_label (\%opt);
+     print STDOUT qq[$msg</dd>\n];
+     add_error ('syntax', \%opt => $result);
+   };
+   my $m = $input->{is_char_string} ? 'parse_char_string' : 'parse_byte_string';
+   my $time1 = time;
+   my $manifest = Whatpm::CacheManifest->$m
+       ($input->{s}, $input->{uri}, $input->{base_uri}, $onerror);
+   $time{parse_manifest} = time - $time1;
+   print STDOUT qq[</dl></div>];
+   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];
    }
-   if ($$s =~ /\G([^\x0A]+)/gc) {
-     print STDOUT qq[<li id="line-$i">], htescape $1, "</li>\n";
+   my $i = 1;
+   push @nav, ['#source-string' => 'Source'] unless $input->{nested};
+   print STDOUT qq[<div id="$input->{id_prefix}source-string" class="section">
+ <h2>Document Source</h2>
+ <ol lang="">\n];
+   if (length $$s) {
+     while ($$s =~ /\G([^\x0D\x0A]*?)(?>\x0D\x0A?|\x0A)/gc) {
+       print STDOUT qq[<li id="$input->{id_prefix}line-$i">], htescape $1,
+           "</li>\n";
+       $i++;
+     }
+     if ($$s =~ /\G([^\x0D\x0A]+)/gc) {
+       print STDOUT qq[<li id="$input->{id_prefix}line-$i">], htescape $1,
+           "</li>\n";
+     }
+   } else {
+     print STDOUT q[<li id="$input->{id_prefix}line-1"></li>];
    }
-   print STDOUT "</ol>";
+   print STDOUT "</ol></div>
- } # print_input_string
+ <script>
+   addSourceToParseErrorList ('$input->{id_prefix}', 'parse-errors-list');
+ </script>";
+ } # print_input_string_section
+ sub print_document_tree ($$) {
+   my ($input, $node) = @_;
- sub print_document_tree ($) {
-   my $node = shift;
    my $r = '<ol class="xoxo">';
    my @node = ($node);
-Line 247 
 sub print_document_tree ($) {
+Line 723 
 sub print_document_tree ($) {
        next;
      }
-     my $node_id = 'node-'.refaddr $child;
+     my $node_id = $input->{id_prefix} . 'node-'.refaddr $child;
      my $nt = $child->node_type;
      if ($nt == $child->ELEMENT_NODE) {
-       $r .= qq'<li id="$node_id"><code>' . htescape ($child->tag_name) .
+       my $child_nsuri = $child->namespace_uri;
+       $r .= qq[<li id="$node_id" class="tree-element"><code title="@{[defined $child_nsuri ? $child_nsuri : '']}">] . htescape ($child->tag_name) .
            '</code>'; ## ISSUE: case
        if ($child->has_attributes) {
          $r .= '<ul class="attributes">';
-         for my $attr (sort {$a->[0] cmp $b->[0]} map { [$_->name, $_->value, 'node-'.refaddr $_] }
+         for my $attr (sort {$a->[0] cmp $b->[0]} map { [$_->name, $_->value, $_->namespace_uri, 'node-'.refaddr $_] }
                        @{$child->attributes}) {
-           $r .= qq'<li id="$attr->[2]"><code>' . htescape ($attr->[0]) . '</code> = '; ## ISSUE: case?
+           $r .= qq[<li id="$input->{id_prefix}$attr->[3]" class="tree-attribute"><code title="@{[defined $attr->[2] ? htescape ($attr->[2]) : '']}">] . htescape ($attr->[0]) . '</code> = '; ## ISSUE: case?
            $r .= '<q>' . htescape ($attr->[1]) . '</q></li>'; ## TODO: children
          }
          $r .= '</ul>';
        }
-       if ($node->has_child_nodes) {
+       if ($child->has_child_nodes) {
          $r .= '<ol class="children">';
-         unshift @node, @{$child->child_nodes}, '</ol>';
+         unshift @node, @{$child->child_nodes}, '</ol></li>';
+       } else {
+         $r .= '</li>';
        }
      } elsif ($nt == $child->TEXT_NODE) {
-       $r .= qq'<li id="$node_id"><q>' . htescape ($child->data) . '</q></li>';
+       $r .= qq'<li id="$node_id" class="tree-text"><q lang="">' . htescape ($child->data) . '</q></li>';
      } elsif ($nt == $child->CDATA_SECTION_NODE) {
-       $r .= qq'<li id="$node_id"><code>&lt;[CDATA[</code><q>' . htescape ($child->data) . '</q><code>]]&gt;</code></li>';
+       $r .= qq'<li id="$node_id" class="tree-cdata"><code>&lt;[CDATA[</code><q lang="">' . htescape ($child->data) . '</q><code>]]&gt;</code></li>';
      } elsif ($nt == $child->COMMENT_NODE) {
-       $r .= qq'<li id="$node_id"><code>&lt;!--</code><q>' . htescape ($child->data) . '</q><code>--&gt;</code></li>';
+       $r .= qq'<li id="$node_id" class="tree-comment"><code>&lt;!--</code><q lang="">' . htescape ($child->data) . '</q><code>--&gt;</code></li>';
      } elsif ($nt == $child->DOCUMENT_NODE) {
-       $r .= qq'<li id="$node_id">Document</li>';
+       $r .= qq'<li id="$node_id" class="tree-document">Document';
+       $r .= qq[<ul class="attributes">];
+       my $cp = $child->manakai_charset;
+       if (defined $cp) {
+         $r .= qq[<li><code>charset</code> parameter = <code>];
+         $r .= htescape ($cp) . qq[</code></li>];
+       }
+       $r .= qq[<li><code>inputEncoding</code> = ];
+       my $ie = $child->input_encoding;
+       if (defined $ie) {
+         $r .= qq[<code>@{[htescape ($ie)]}</code>];
+         if ($child->manakai_has_bom) {
+           $r .= qq[ (with <code class=charname><abbr>BOM</abbr></code>)];
+         }
+       } else {
+         $r .= qq[(<code>null</code>)];
+       }
+       $r .= qq[<li>@{[scalar get_text ('manakaiIsHTML:'.($child->manakai_is_html?1:0))]}</li>];
+       $r .= qq[<li>@{[scalar get_text ('manakaiCompatMode:'.$child->manakai_compat_mode)]}</li>];
+       unless ($child->manakai_is_html) {
+         $r .= qq[<li>XML version = <code>@{[htescape ($child->xml_version)]}</code></li>];
+         if (defined $child->xml_encoding) {
+           $r .= qq[<li>XML encoding = <code>@{[htescape ($child->xml_encoding)]}</code></li>];
+         } else {
+           $r .= qq[<li>XML encoding = (null)</li>];
+         }
+         $r .= qq[<li>XML standalone = @{[$child->xml_standalone ? 'true' : 'false']}</li>];
+       }
+       $r .= qq[</ul>];
        if ($child->has_child_nodes) {
-         $r .= '<ol>';
+         $r .= '<ol class="children">';
-         unshift @node, @{$child->child_nodes}, '</ol>';
+         unshift @node, @{$child->child_nodes}, '</ol></li>';
        }
      } elsif ($nt == $child->DOCUMENT_TYPE_NODE) {
-       $r .= qq'<li id="$node_id"><code>&lt;!DOCTYPE&gt;</code><ul>';
+       $r .= qq'<li id="$node_id" class="tree-doctype"><code>&lt;!DOCTYPE&gt;</code><ul class="attributes">';
-       $r .= '<li>Name = <q>@{[htescape ($child->name)]}</q></li>';
+       $r .= qq[<li class="tree-doctype-name">Name = <q>@{[htescape ($child->name)]}</q></li>];
-       $r .= '<li>Public identifier = <q>@{[htescape ($child->public_id)]}</q></li>';
+       $r .= qq[<li class="tree-doctype-publicid">Public identifier = <q>@{[htescape ($child->public_id)]}</q></li>];
-       $r .= '<li>System identifier = <q>@{[htescape ($child->system_id)]}</q></li>';
+       $r .= qq[<li class="tree-doctype-systemid">System identifier = <q>@{[htescape ($child->system_id)]}</q></li>];
        $r .= '</ul></li>';
      } elsif ($nt == $child->PROCESSING_INSTRUCTION_NODE) {
-       $r .= qq'<li id="$node_id"><code>&lt;?@{[htescape ($child->target)]}?&gt;</code>';
+       $r .= qq'<li id="$node_id" class="tree-id"><code>&lt;?@{[htescape ($child->target)]}</code> <q>@{[htescape ($child->data)]}</q><code>?&gt;</code></li>';
-       $r .= '<ul><li>@{[htescape ($child->data)]}</li></ul></li>';
      } else {
-       $r .= qq'<li id="$node_id">@{[$child->node_type]} @{[htescape ($child->node_name)]}</li>'; # error
+       $r .= qq'<li id="$node_id" class="tree-unknown">@{[$child->node_type]} @{[htescape ($child->node_name)]}</li>'; # error
      }
    }
-Line 297 
 sub print_document_tree ($) {
+Line 803 
 sub print_document_tree ($) {
    print STDOUT $r;
  } # print_document_tree
+ sub print_structure_dump_dom_section ($$$) {
+   my ($input, $doc, $el) = @_;
+   print STDOUT qq[
+ <div id="$input->{id_prefix}document-tree" class="section">
+ <h2>Document Tree</h2>
+ ];
+   push @nav, [qq[#$input->{id_prefix}document-tree] => 'Tree']
+       unless $input->{nested};
+   print_document_tree ($input, $el || $doc);
+   print STDOUT qq[</div>];
+ } # print_structure_dump_dom_section
+ sub print_structure_dump_cssom_section ($$) {
+   my ($input, $cssom) = @_;
+   print STDOUT qq[
+ <div id="$input->{id_prefix}document-tree" class="section">
+ <h2>Document Tree</h2>
+ ];
+   push @nav, [qq[#$input->{id_prefix}document-tree] => 'Tree']
+       unless $input->{nested};
+   ## TODO:
+   print STDOUT "<pre>".htescape ($cssom->css_text)."</pre>";
+   print STDOUT qq[</div>];
+ } # print_structure_dump_cssom_section
+ sub print_structure_dump_manifest_section ($$) {
+   my ($input, $manifest) = @_;
+   print STDOUT qq[
+ <div id="$input->{id_prefix}dump-manifest" class="section">
+ <h2>Cache Manifest</h2>
+ ];
+   push @nav, [qq[#$input->{id_prefix}dump-manifest] => 'Cache Manifest']
+       unless $input->{nested};
+   print STDOUT qq[<dl><dt>Explicit entries</dt>];
+   my $i = 0;
+   for my $uri (@{$manifest->[0]}) {
+     my $euri = htescape ($uri);
+     print STDOUT qq[<dd id="$input->{id_prefix}index-@{[$i++]}"><code class=uri>&lt;<a href="$euri">$euri</a>></code></dd>];
+   }
+   print STDOUT qq[<dt>Fallback entries</dt><dd>
+       <table><thead><tr><th scope=row>Oppotunistic Caching Namespace</th>
+       <th scope=row>Fallback Entry</tr><tbody>];
+   for my $uri (sort {$a cmp $b} keys %{$manifest->[1]}) {
+     my $euri = htescape ($uri);
+     my $euri2 = htescape ($manifest->[1]->{$uri});
+     print STDOUT qq[<tr><td id="$input->{id_prefix}index-@{[$i++]}"><code class=uri>&lt;<a href="$euri">$euri</a>></code></td>
+         <td id="$input->{id_prefix}index-@{[$i++]}"><code class=uri>&lt;<a href="$euri2">$euri2</a>></code></td>];
+   }
+   print STDOUT qq[</table><dt>Online whitelist</dt>];
+   for my $uri (@{$manifest->[2]}) {
+     my $euri = htescape ($uri);
+     print STDOUT qq[<dd id="$input->{id_prefix}index-@{[$i++]}"><code class=uri>&lt;<a href="$euri">$euri</a>></code></dd>];
+   }
+   print STDOUT qq[</dl></div>];
+ } # print_structure_dump_manifest_section
+ sub print_structure_error_dom_section ($$$$$) {
+   my ($input, $doc, $el, $result, $onsubdoc) = @_;
+   print STDOUT qq[<div id="$input->{id_prefix}document-errors" class="section">
+ <h2>Document Errors</h2>
+ <dl id=document-errors-list>];
+   push @nav, [qq[#$input->{id_prefix}document-errors] => 'Document Error']
+       unless $input->{nested};
+   require Whatpm::ContentChecker;
+   my $onerror = sub {
+     my %opt = @_;
+     my ($type, $cls, $msg) = get_text ($opt{type}, $opt{level}, $opt{node});
+     $type =~ tr/ /-/;
+     $type =~ s/\|/%7C/g;
+     $msg .= qq[ [<a href="../error-description#@{[htescape ($type)]}">Description</a>]];
+     print STDOUT qq[<dt class="$cls">] . get_error_label ($input, \%opt) .
+         qq[</dt>\n<dd class="$cls">], get_error_level_label (\%opt);
+     print STDOUT $msg, "</dd>\n";
+     add_error ('structure', \%opt => $result);
+   };
+   my $elements;
+   my $time1 = time;
+   if ($el) {
+     $elements = Whatpm::ContentChecker->check_element
+         ($el, $onerror, $onsubdoc);
+   } else {
+     $elements = Whatpm::ContentChecker->check_document
+         ($doc, $onerror, $onsubdoc);
+   }
+   $time{check} = time - $time1;
+   print STDOUT qq[</dl>
+ <script>
+   addSourceToParseErrorList ('$input->{id_prefix}', 'document-errors-list');
+ </script></div>];
+   return $elements;
+ } # print_structure_error_dom_section
+ sub print_structure_error_manifest_section ($$$) {
+   my ($input, $manifest, $result) = @_;
+   print STDOUT qq[<div id="$input->{id_prefix}document-errors" class="section">
+ <h2>Document Errors</h2>
+ <dl>];
+   push @nav, [qq[#$input->{id_prefix}document-errors] => 'Document Error']
+       unless $input->{nested};
+   require Whatpm::CacheManifest;
+   Whatpm::CacheManifest->check_manifest ($manifest, sub {
+     my %opt = @_;
+     my ($type, $cls, $msg) = get_text ($opt{type}, $opt{level}, $opt{node});
+     $type =~ tr/ /-/;
+     $type =~ s/\|/%7C/g;
+     $msg .= qq[ [<a href="../error-description#@{[htescape ($type)]}">Description</a>]];
+     print STDOUT qq[<dt class="$cls">] . get_error_label ($input, \%opt) .
+         qq[</dt>\n<dd class="$cls">], $msg, "</dd>\n";
+     add_error ('structure', \%opt => $result);
+   });
+   print STDOUT qq[</div>];
+ } # print_structure_error_manifest_section
+ sub print_table_section ($$) {
+   my ($input, $tables) = @_;
+   push @nav, [qq[#$input->{id_prefix}tables] => 'Tables']
+       unless $input->{nested};
+   print STDOUT qq[
+ <div id="$input->{id_prefix}tables" class="section">
+ <h2>Tables</h2>
+ <!--[if IE]><script type="text/javascript" src="../excanvas.js"></script><![endif]-->
+ <script src="../table-script.js" type="text/javascript"></script>
+ <noscript>
+ <p><em>Structure of tables are visualized here if scripting is enabled.</em></p>
+ </noscript>
+ ];
+   require JSON;
+   my $i = 0;
+   for my $table_el (@$tables) {
+     $i++;
+     print STDOUT qq[<div class="section" id="$input->{id_prefix}table-$i"><h3>] .
+         get_node_link ($input, $table_el) . q[</h3>];
+     ## TODO: Make |ContentChecker| return |form_table| result
+     ## so that this script don't have to run the algorithm twice.
+     my $table = Whatpm::HTMLTable->form_table ($table_el);
+     for (@{$table->{column_group}}, @{$table->{column}}, $table->{caption}) {
+       next unless $_;
+       delete $_->{element};
+     }
+     for (@{$table->{row_group}}) {
+       next unless $_;
+       next unless $_->{element};
+       $_->{type} = $_->{element}->manakai_local_name;
+       delete $_->{element};
+     }
+     for (@{$table->{cell}}) {
+       next unless $_;
+       for (@{$_}) {
+         next unless $_;
+         for (@$_) {
+           $_->{id} = refaddr $_->{element} if defined $_->{element};
+           delete $_->{element};
+           $_->{is_header} = $_->{is_header} ? 1 : 0;
+         }
+       }
+     }
+     print STDOUT '</div><script type="text/javascript">tableToCanvas (';
+     print STDOUT JSON::objToJson ($table);
+     print STDOUT qq[, document.getElementById ('$input->{id_prefix}table-$i')];
+     print STDOUT qq[, '$input->{id_prefix}');</script>];
+   }
+   print STDOUT qq[</div>];
+ } # print_table_section
+ sub print_listing_section ($$$) {
+   my ($opt, $input, $ids) = @_;
+   push @nav, ['#' . $input->{id_prefix} . $opt->{id} => $opt->{label}]
+       unless $input->{nested};
+   print STDOUT qq[
+ <div id="$input->{id_prefix}$opt->{id}" class="section">
+ <h2>$opt->{heading}</h2>
+ <dl>
+ ];
+   for my $id (sort {$a cmp $b} keys %$ids) {
+     print STDOUT qq[<dt><code>@{[htescape $id]}</code></dt>];
+     for (@{$ids->{$id}}) {
+       print STDOUT qq[<dd>].get_node_link ($input, $_).qq[</dd>];
+     }
+   }
+   print STDOUT qq[</dl></div>];
+ } # print_listing_section
+ sub print_uri_section ($$$) {
+   my ($input, $uris) = @_;
+   ## NOTE: URIs contained in the DOM (i.e. in HTML or XML documents),
+   ## except for those in RDF triples.
+   ## TODO: URIs in CSS
+   push @nav, ['#' . $input->{id_prefix} . 'uris' => 'URIs']
+       unless $input->{nested};
+   print STDOUT qq[
+ <div id="$input->{id_prefix}uris" class="section">
+ <h2>URIs</h2>
+ <dl>];
+   for my $uri (sort {$a cmp $b} keys %$uris) {
+     my $euri = htescape ($uri);
+     print STDOUT qq[<dt><code class=uri>&lt;<a href="$euri">$euri</a>></code>];
+     my $eccuri = htescape (get_cc_uri ($uri));
+     print STDOUT qq[<dd><a href="$eccuri">Check conformance of this document</a>];
+     print STDOUT qq[<dd>Found at: <ul>];
+     for my $entry (@{$uris->{$uri}}) {
+       print STDOUT qq[<li>], get_node_link ($input, $entry->{node});
+       if (keys %{$entry->{type} or {}}) {
+         print STDOUT ' (';
+         print STDOUT join ', ', map {
+           {
+             hyperlink => 'Hyperlink',
+             resource => 'Link to an external resource',
+             namespace => 'Namespace URI',
+             cite => 'Citation or link to a long description',
+             embedded => 'Link to an embedded content',
+             base => 'Base URI',
+             action => 'Submission URI',
+           }->{$_}
+             or
+           htescape ($_)
+         } keys %{$entry->{type}};
+         print STDOUT ')';
+       }
+     }
+     print STDOUT qq[</ul>];
+   }
+   print STDOUT qq[</dl></div>];
+ } # print_uri_section
+ sub print_rdf_section ($$$) {
+   my ($input, $rdfs) = @_;
+   push @nav, ['#' . $input->{id_prefix} . 'rdf' => 'RDF']
+       unless $input->{nested};
+   print STDOUT qq[
+ <div id="$input->{id_prefix}rdf" class="section">
+ <h2>RDF Triples</h2>
+ <dl>];
+   my $i = 0;
+   for my $rdf (@$rdfs) {
+     print STDOUT qq[<dt id="$input->{id_prefix}rdf-@{[$i++]}">];
+     print STDOUT get_node_link ($input, $rdf->[0]);
+     print STDOUT qq[<dd><dl>];
+     for my $triple (@{$rdf->[1]}) {
+       print STDOUT '<dt>' . get_node_link ($input, $triple->[0]) . '<dd>';
+       print STDOUT get_rdf_resource_html ($triple->[1]);
+       print STDOUT ' ';
+       print STDOUT get_rdf_resource_html ($triple->[2]);
+       print STDOUT ' ';
+       print STDOUT get_rdf_resource_html ($triple->[3]);
+     }
+     print STDOUT qq[</dl>];
+   }
+   print STDOUT qq[</dl></div>];
+ } # print_rdf_section
+ sub get_rdf_resource_html ($) {
+   my $resource = shift;
+   if (defined $resource->{uri}) {
+     my $euri = htescape ($resource->{uri});
+     return '<code class=uri>&lt;<a href="' . $euri . '">' . $euri .
+         '</a>></code>';
+   } 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 $r = qq[<q lang="$elang">] . htescape ($resource->{value}) . '</q>';
+     if (defined $resource->{datatype}) {
+       my $euri = htescape ($resource->{datatype});
+       $r .= '^^<code class=uri>&lt;<a href="' . $euri . '">' . $euri .
+           '</a>></code>';
+     } elsif (length $resource->{language}) {
+       $r .= '@' . htescape ($resource->{language});
+     }
+     return $r;
+   } else {
+     return '??';
+   }
+ } # get_rdf_resource_html
+ sub print_result_section ($) {
+   my $result = shift;
+   print STDOUT qq[
+ <div id="result-summary" class="section">
+ <h2>Result</h2>];
+   if ($result->{unsupported} and $result->{conforming_max}) {
+     print STDOUT qq[<p class=uncertain id=result-para>The conformance
+         checker cannot decide whether the document is conforming or
+         not, since the document contains one or more unsupported
+         features.  The document might or might not be conforming.</p>];
+   } elsif ($result->{conforming_min}) {
+     print STDOUT qq[<p class=PASS id=result-para>No conformance-error is
+         found in this document.</p>];
+   } elsif ($result->{conforming_max}) {
+     print STDOUT qq[<p class=SEE-RESULT id=result-para>This document
+         is <strong>likely <em>non</em>-conforming</strong>, but in rare case
+         it might be conforming.</p>];
+   } else {
+     print STDOUT qq[<p class=FAIL id=result-para>This document is
+         <strong><em>non</em>-conforming</strong>.</p>];
+   }
+   print STDOUT qq[<table>
+ <colgroup><col><colgroup><col><col><col><colgroup><col>
+ <thead>
+ <tr><th scope=col></th>
+ <th scope=col><a href="../error-description#level-m"><em class=rfc2119>MUST</em>‐level
+ Errors</a></th>
+ <th scope=col><a href="../error-description#level-s"><em class=rfc2119>SHOULD</em>‐level
+ Errors</a></th>
+ <th scope=col><a href="../error-description#level-w">Warnings</a></th>
+ <th scope=col>Score</th></tr></thead><tbody>];
+   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}) {
+       $label = qq[<a href="$_->[2]">$label</a>];
+     }
+     print STDOUT qq[<tr class="@{[$uncertain ? 'uncertain' : '']}"><th scope=row>$label</th><td class="@{[$result->{$_->[1]}->{must} ? 'FAIL' : '']}">$result->{$_->[1]}->{must}$uncertain</td><td class="@{[$result->{$_->[1]}->{should} ? 'SEE-RESULT' : '']}">$result->{$_->[1]}->{should}$uncertain</td><td>$result->{$_->[1]}->{warning}$uncertain</td>];
+     if ($uncertain) {
+       print qq[<td class="@{[$result->{$_->[1]}->{must} ? 'FAIL' : $result->{$_->[1]}->{should} ? 'SEE-RESULT' : '']}">&#x2212;&#x221E;..$result->{$_->[1]}->{score_max}</td>];
+     } elsif ($result->{$_->[1]}->{score_min} != $result->{$_->[1]}->{score_max}) {
+       print qq[<td class="@{[$result->{$_->[1]}->{must} ? 'FAIL' : 'SEE-RESULT']}">$result->{$_->[1]}->{score_min}..$result->{$_->[1]}->{score_max}</td></tr>];
+     } else {
+       print qq[<td class="@{[$result->{$_->[1]}->{must} ? 'FAIL' : '']}">$result->{$_->[1]}->{score_min}</td></tr>];
+     }
+   }
+   $score_max += $score_base;
+   print STDOUT qq[
+ <tr class=uncertain><th scope=row>Semantics</th><td>0?</td><td>0?</td><td>0?</td><td>&#x2212;&#x221E;..$score_base</td></tr>
+ </tbody>
+ <tfoot><tr class=uncertain><th scope=row>Total</th>
+ <td class="@{[$must_error ? 'FAIL' : '']}">$must_error?</td>
+ <td class="@{[$should_error ? 'SEE-RESULT' : '']}">$should_error?</td>
+ <td>$warning?</td>
+ <td class="@{[$must_error ? 'FAIL' : $should_error ? 'SEE-RESULT' : '']}"><strong>&#x2212;&#x221E;..$score_max</strong></td></tr></tfoot>
+ </table>
+ <p><strong>Important</strong>: This conformance checking service
+ is <em>under development</em>.  The result above might be <em>wrong</em>.</p>
+ </div>];
+   push @nav, ['#result-summary' => 'Result'];
+ } # print_result_section
+ sub print_result_unknown_type_section ($$) {
+   my ($input, $result) = @_;
+   my $euri = htescape ($input->{uri});
+   print STDOUT qq[
+ <div id="$input->{id_prefix}parse-errors" class="section">
+ <h2>Errors</h2>
+ <dl>
+ <dt class=unsupported><code>&lt;<a href="$euri">$euri</a>&gt;</code></dt>
+     <dd class=unsupported><strong><a href="../error-description#level-u">Not
+         supported</a></strong>:
+     Media type
+     <code class="MIME" lang="en">@{[htescape $input->{media_type}]}</code>
+     is not supported.</dd>
+ </dl>
+ </div>
+ ];
+   push @nav, [qq[#$input->{id_prefix}parse-errors] => 'Errors']
+       unless $input->{nested};
+   add_error (char => {level => 'u'} => $result);
+   add_error (syntax => {level => 'u'} => $result);
+   add_error (structure => {level => 'u'} => $result);
+ } # print_result_unknown_type_section
+ sub print_result_input_error_section ($) {
+   my $input = shift;
+   print STDOUT qq[<div class="section" id="result-summary">
+ <p><em><strong>Input Error</strong>: @{[htescape ($input->{error_status_text})]}</em></p>
+ </div>];
+   push @nav, ['#result-summary' => 'Result'];
+ } # print_result_input_error_section
+ sub get_error_label ($$) {
+   my ($input, $err) = @_;
+   my $r = '';
+   my $line;
+   my $column;
+   if (defined $err->{node}) {
+     $line = $err->{node}->get_user_data ('manakai_source_line');
+     if (defined $line) {
+       $column = $err->{node}->get_user_data ('manakai_source_column');
+     } else {
+       if ($err->{node}->node_type == $err->{node}->ATTRIBUTE_NODE) {
+         my $owner = $err->{node}->owner_element;
+         $line = $owner->get_user_data ('manakai_source_line');
+         $column = $owner->get_user_data ('manakai_source_column');
+       } else {
+         my $parent = $err->{node}->parent_node;
+         if ($parent) {
+           $line = $parent->get_user_data ('manakai_source_line');
+           $column = $parent->get_user_data ('manakai_source_column');
+         }
+       }
+     }
+   }
+   unless (defined $line) {
+     if (defined $err->{token} and defined $err->{token}->{line}) {
+       $line = $err->{token}->{line};
+       $column = $err->{token}->{column};
+     } elsif (defined $err->{line}) {
+       $line = $err->{line};
+       $column = $err->{column};
+     }
+   }
+   if (defined $line) {
+     if (defined $column and $column > 0) {
+       $r = qq[<a href="#$input->{id_prefix}line-$line">Line $line</a> column $column];
+     } else {
+       $line = $line - 1 || 1;
+       $r = qq[<a href="#$input->{id_prefix}line-$line">Line $line</a>];
+     }
+   }
+   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 {
+       $r .= "<a href='#$input->{id_prefix}index-@{[0+$err->{index}]}'>Index "
+           . (0+$err->{index}) . '</a>';
+     }
+   }
+   if (defined $err->{value}) {
+     $r .= ' ' if length $r;
+     $r .= '<q><code>' . htescape ($err->{value}) . '</code></q>';
+   }
+   return $r;
+ } # get_error_label
+ sub get_error_level_label ($) {
+   my $err = shift;
+   my $r = '';
+   if (not defined $err->{level} or $err->{level} eq 'm') {
+     $r = qq[<strong><a href="../error-description#level-m"><em class=rfc2119>MUST</em>‐level
+         error</a></strong>: ];
+   } elsif ($err->{level} eq 's') {
+     $r = qq[<strong><a href="../error-description#level-s"><em class=rfc2119>SHOULD</em>‐level
+         error</a></strong>: ];
+   } elsif ($err->{level} eq 'w') {
+     $r = qq[<strong><a href="../error-description#level-w">Warning</a></strong>:
+         ];
+   } elsif ($err->{level} eq 'u' or $err->{level} eq 'unsupported') {
+     $r = qq[<strong><a href="../error-description#level-u">Not
+         supported</a></strong>: ];
+   } elsif ($err->{level} eq 'i') {
+     $r = qq[<strong><a href="../error-description#level-i">Information</a></strong>: ];
+   } else {
+     my $elevel = htescape ($err->{level});
+     $r = qq[<strong><a href="../error-description#level-$elevel">$elevel</a></strong>:
+         ];
+   }
+   return $r;
+ } # get_error_level_label
  sub get_node_path ($) {
    my $node = shift;
    my @r;
    while (defined $node) {
      my $rs;
      if ($node->node_type == 1) {
-       $rs = $node->manakai_local_name;
+       $rs = $node->node_name;
        $node = $node->parent_node;
      } elsif ($node->node_type == 2) {
-       $rs = '@' . $node->manakai_local_name;
+       $rs = '@' . $node->node_name;
        $node = $node->owner_element;
      } elsif ($node->node_type == 3) {
        $rs = '"' . $node->data . '"';
        $node = $node->parent_node;
      } elsif ($node->node_type == 9) {
+       @r = ('') unless @r;
        $rs = '';
        $node = $node->parent_node;
      } else {
-Line 323 
 sub get_node_path ($) {
+Line 1364 
 sub get_node_path ($) {
    return join '/', @r;
  } # get_node_path
+ sub get_node_link ($$) {
+   return qq[<a href="#$_[0]->{id_prefix}node-@{[refaddr $_[1]]}">] .
+       htescape (get_node_path ($_[1])) . qq[</a>];
+ } # 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{<var>\$([0-9]+)</var>}{
+         defined $arg[$1] ? htescape ($arg[$1]) : '(undef)';
+       }ge;
+       $msg =~ s{<var>{\@([A-Za-z0-9:_.-]+)}</var>}{
+         UNIVERSAL::can ($node, 'get_attribute_ns')
+             ? htescape ($node->get_attribute_ns (undef, $1)) : ''
+       }ge;
+       $msg =~ s{<var>{\@}</var>}{
+         UNIVERSAL::can ($node, 'value') ? htescape ($node->value) : ''
+       }ge;
+       $msg =~ s{<var>{local-name}</var>}{
+         UNIVERSAL::can ($node, 'manakai_local_name')
+           ? htescape ($node->manakai_local_name) : ''
+       }ge;
+       $msg =~ s{<var>{element-local-name}</var>}{
+         (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 encode_uri_component ($) {
+   require Encode;
+   my $s = Encode::encode ('utf8', shift);
+   $s =~ s/([^0-9A-Za-z_.~-])/sprintf '%%%02X', ord $1/ge;
+   return $s;
+ } # encode_uri_component
+ sub get_cc_uri ($) {
+   return './?uri=' . encode_uri_component ($_[0]);
+ } # get_cc_uri
+ 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;
+     $host_permit->add_rule (<<EOH);
+ Allow host=suika port=80
+ Deny host=suika
+ Allow host=suika.fam.cx port=80
+ Deny host=suika.fam.cx
+ Deny host=localhost
+ Deny host=*.localdomain
+ Deny ipv4=0.0.0.0/8
+ Deny ipv4=10.0.0.0/8
+ Deny ipv4=127.0.0.0/8
+ Deny ipv4=169.254.0.0/16
+ Deny ipv4=172.0.0.0/11
+ Deny ipv4=192.0.2.0/24
+ Deny ipv4=192.88.99.0/24
+ Deny ipv4=192.168.0.0/16
+ Deny ipv4=198.18.0.0/15
+ Deny ipv4=224.0.0.0/4
+ Deny ipv4=255.255.255.255/32
+ Deny ipv6=0::0/0
+ Allow host=*
+ EOH
+     unless ($host_permit->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 <base>. ## TODO: Use our own code!
+       $r->{uri} = $res->request->uri;
+       $r->{request_uri} = $request_uri;
+       ## TODO: More strict parsing...
+       my $ct = $res->header ('Content-Type');
+       if (defined $ct and $ct =~ /;\s*charset\s*=\s*"?([^\s;"]+)"?/i) {
+         $r->{charset} = lc $1;
+         $r->{charset} =~ tr/\\//d;
+         $r->{official_charset} = $r->{charset};
+       }
+       my $input_charset = $http->get_parameter ('charset');
+       if (defined $input_charset and length $input_charset) {
+         $r->{charset_overridden}
+             = (not defined $r->{charset} or $r->{charset} ne $input_charset);
+         $r->{charset} = $input_charset;
+       }
+       ## TODO: Support for HTTP Content-Encoding
+       $r->{s} = ''.$res->content;
+       require Whatpm::ContentType;
+       ($r->{official_type}, $r->{media_type})
+           = Whatpm::ContentType->get_sniffed_type
+               (get_file_head => sub {
+                  return substr $r->{s}, 0, shift;
+                },
+                http_content_type_byte => $ct,
+                has_http_content_encoding =>
+                    defined $res->header ('Content-Encoding'),
+                supported_image_types => {});
+     } else {
+       $r->{uri} = $res->request->uri;
+       $r->{request_uri} = $request_uri;
+       $r->{error_status_text} = $res->status_line;
+     }
+     $r->{header_field} = [];
+     $res->scan (sub {
+       push @{$r->{header_field}}, [$_[0], $_[1]];
+     });
+     $r->{header_status_code} = $res->code;
+     $r->{header_status_text} = $res->message;
+   } else {
+     $r->{s} = ''.$http->get_parameter ('s');
+     $r->{uri} = q<thismessage:/>;
+     $r->{request_uri} = q<thismessage:/>;
+     $r->{base_uri} = q<thismessage:/>;
+     $r->{charset} = ''.$http->get_parameter ('_charset_');
+     $r->{charset} =~ s/\s+//g;
+     $r->{charset} = 'utf-8' if $r->{charset} eq '';
+     $r->{official_charset} = $r->{charset};
+     $r->{header_field} = [];
+     require Whatpm::ContentType;
+     ($r->{official_type}, $r->{media_type})
+         = Whatpm::ContentType->get_sniffed_type
+             (get_file_head => sub {
+                return substr $r->{s}, 0, shift;
+              },
+              http_content_type_byte => undef,
+              has_http_content_encoding => 0,
+              supported_image_types => {});
+   }
+   my $input_format = $http->get_parameter ('i');
+   if (defined $input_format and length $input_format) {
+     $r->{media_type_overridden}
+         = (not defined $r->{media_type} or $input_format ne $r->{media_type});
+     $r->{media_type} = $input_format;
+   }
+   if (defined $r->{s} and not defined $r->{media_type}) {
+     $r->{media_type} = 'text/html';
+     $r->{media_type_overridden} = 1;
+   }
+   if ($r->{media_type} eq 'text/xml') {
+     unless (defined $r->{charset}) {
+       $r->{charset} = 'us-ascii';
+       $r->{official_charset} = $r->{charset};
+     } elsif ($r->{charset_overridden} and $r->{charset} eq 'us-ascii') {
+       $r->{charset_overridden} = 0;
+     }
+   }
+   if (length $r->{s} > 1000_000) {
+     $r->{error_status_text} = 'Entity-body too large';
+     delete $r->{s};
+     return $r;
+   }
+   $r->{inner_html_element} = $http->get_parameter ('e');
+   return $r;
+ } # get_input_document
+ package WDCC::LWPUA;
+ BEGIN { push our @ISA, 'LWP::UserAgent'; }
+ sub redirect_ok {
+   my $ua = shift;
+   unless ($ua->SUPER::redirect_ok (@_)) {
+     return 0;
+   }
+   my $uris = $_[1]->header ('Location');
+   return 0 unless $uris;
+   my $uri = $ua->{wdcc_dom}->create_uri_reference ($uris);
+   unless ({
+            http => 1,
+           }->{lc $uri->uri_scheme}) {
+     return 0;
+   }
+   unless ($ua->{wdcc_host_permit}->check ($uri->uri_host, $uri->uri_port || 80)) {
+     return 0;
+   }
+   return 1;
+ } # redirect_ok
  =head1 AUTHOR
  Wakaba <w@suika.fam.cx>.
  =head1 LICENSE
- Copyright 2007 Wakaba <w@suika.fam.cx>
+ Copyright 2007-2008 Wakaba <w@suika.fam.cx>
  This library is free software; you can redistribute it
  and/or modify it under the same terms as Perl itself.

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-Removed from v.1.3
+Added in v.1.48

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