misc/plugins/SuikaWiki09.wp2

#?SuikaWikiConfig/2.0

Plugin:
  @Name: SuikaWiki09
  @Description:
    @@@: SuikaWiki/0.9 document format
    @@lang:en
  @License: %%Perl%%
  @Author:
    @@Name:
      @@@@: Wakaba
      @@@lang:ja
      @@@script:Latn
    @@Mail[list]: w@suika.fam.cx
  @Date.RCS:
    $Date: 2004/03/29 03:21:24 $
  @RequiredPlugin[list]:
    Edit
    WikiFormCore
    WikiLinking
    WikiStruct
  @Use:
    use Message::Markup::XML::QName qw/NS_xml_URI/;
    my $Reg_Form_Content_M = qr{
 \     \#form
 \             (?:
 \               \( (\w+) \)                                 ## id
 \             )?
 \             : ' ((?>[^\\']*)(?>(?>[^\\']+|\\.)*)) '       ## input
 \         (?> : ' ((?>[^\\']*)(?>(?>[^\\']+|\\.)*)) '       ## template
 \         (?> : ' ((?>[^\\']*)(?>(?>[^\\']+|\\.)*)) ' )? )? ## option
    }x;
    my $Reg_Embed_Content_M = qr{
 \     \#([a-z-]+)
 \             (?>
 \               \( (\w+) \)                                 ## id
 \             )?
 \             (?>
 \               : ( \w+ (?> : \w+ )* )                      ## parameter
 \             )?
    }x;
    my $Reg_URI_Opaque = qr{
 \     (?>[^<>"]*)
 \     (?>
 \       (?>
 \         [^<>"]+
 \       | "(?>[^"\\]*)(?>(?>[^"\\]+|\\.)*)"
 \       )*
 \     )
    }x;

    my ($WIKIRESOURCE, $WIKISTRUCT, $WIKIFORMCORE, $WIKILINKING);

PluginConst:
  @NS_SW09:
    urn:x-suika-fam-cx:markup:suikawiki:0:9:
  @NS_HTML3:
    urn:x-suika-fam-cx:markup:ietf:html:3:draft:00:
  @NS_XHTML1:
    http://www.w3.org/1999/xhtml
  @NS_XHTML2:
    http://www.w3.org/2002/06/xhtml2
  @WIKIFORMCORE:
    {($WIKIFORMCORE ||= SuikaWiki::Plugin->module_package ('WikiFormCore'))}
  @WIKILINKING:
    {($WIKILINKING ||= SuikaWiki::Plugin->module_package ('WikiLinking'))}
  @WIKIRESOURCE:
    {($WIKIRESOURCE ||= SuikaWiki::Plugin->module_package ('WikiResource'))}
  @WIKISTRUCT:
    {($WIKISTRUCT ||= SuikaWiki::Plugin->module_package ('WikiStruct'))}


Format:
  @ModuleName:
    SuikaWiki::V0
  @Description:
    @@@: Dummy base format for SuikaWiki/0.*
    @@lang:en
  @Inherit[list]:
    Text::Plain

Format:
  @Name: SuikaWiki
  @Version: 0.9
  @Type:
    @@@: text/x-suikawiki
    @@version: 0.9
  @ModuleName:
    SuikaWiki::V0_9
  @Inherit[list]:
    SuikaWiki::V0
  @Description:
    @@@: SuikaWiki/0.9 document format (Standard document format for SuikaWiki 2)
    @@lang:en
  
  @Use:
    use Message::Markup::XML::QName qw/NS_xml_URI/;
    use Message::Util::Error;

  @Converter:
    @@Type: text/html
    @@IsFragment: 1
    @@Description:
      @@@@: Converting SuikaWiki/0.9 to Hypertext Markup Language fragment
      @@@lang:en
    @@Main:
      $opt->{o}->{wiki} ||= $self->{wiki};
      
    ## Text format -> XML format
      my $xml = __FUNCPACK__->get_xml_tree (text => $source, opt => $opt,
                                            wiki => $self->{wiki});

    ## SuikaWiki/0.9 -> XHTML 1
      __FUNCPACK__->sw09_to_xhtml1 (source => $xml, parent => $opt->{-parent},
                                    o => $opt->{o}, page => $opt->{page});

      if ($opt->{-with_annotation_input}) {
        SuikaWiki::Plugin->module_package ('WikiFormCore')
                         ->make_content_form_in_html
                             ($opt->{-parent},
                              $WIKIRESOURCE->get
                                (name => 'SuikaWiki/0.9:form:footannotate:input',
                                 o => $opt->{o}, wiki => $opt->{o}->{wiki}),
                              option => $WIKIRESOURCE->get
                                (name => 'SuikaWiki/0.9:form:footannotate:option',
                                 o => $opt->{o}, wiki => $opt->{o}->{wiki}),
                              o => $opt->{o},
                              wiki => $opt->{o}->{wiki},
                              output => {
                                page => $opt->{page},
                              });
      }


  @Converter:
    @@Type: 
      @@@@: application/x-suikawiki+xml
      @@@version: 0.9
    @@Description:
      @@@@: Converting SuikaWiki/0.9 text format to XML format
      @@@lang: en
    @@Main:
      my $xml = __FUNCPACK__->get_xml_tree (text => $source, opt => $opt,
                                            wiki => $self->{wiki});
## TODO: Make a clone
      $opt->{-parent}->append_node ($xml);

  @NextIndex:
    @@Name: anchor
    @@Main:
      my $xml = __FUNCPACK__->get_xml_tree (text => $source, opt => \%opt,
                                            wiki => $self->{wiki});
      (__FUNCPACK__->get_last_anchor_index ($xml)) + 1;
  
  @WikiForm:
    @@Main:
      ## Text format -> XML format
      my $xml = __FUNCPACK__->get_xml_tree (text => $source, opt => \%opt,
                                            wiki => $self->{wiki});
      local $opt{o}->{var}->{sw09__anchor_index};
      local $opt{o}->{var}->{sw09__document_tree} = $xml;

      my $form;
      if ($opt{o}->{form}->{output}->{id}) {
        $form = __FUNCPACK__->get_element_by_id
                  ($xml, $opt{o}->{form}->{output}->{id});
        undef $form unless ref $form and
                           $form->namespace_uri eq $NS_SW09 and
                           $form->local_name eq 'form';
      } else {
        $form = __FUNCPACK__->get_nth_element
                  ($xml, $NS_SW09 => 'form', 
                   $opt{o}->{form}->{output}->{index});
      }
      
      my $ref;
      if (ref $form) {
        $ref = $form->get_attribute_value ('ref', default => 'form');
      } else {
        $ref = '#footannotate';
      }
      
      
      ## WikiForm Option
      if ($ref eq 'form') {
        $opt{option} ||= $form->get_attribute_value ('option');
      } elsif ($ref eq 'comment') {
        $opt{option} ||= $WIKIRESOURCE->get
                           (name => 'SuikaWiki/0.9:form:comment:option',
                            o => $opt{o}, wiki => $opt{o}->{wiki});
      } elsif ($ref eq '#footannotate') {
        $opt{option} ||= $WIKIRESOURCE->get
                           (name => 'SuikaWiki/0.9:form:footannotate:option',
                            o => $opt{o}, wiki => $opt{o}->{wiki});
      } else {
## TODO:
      }
      $WIKIFORMCORE->set_option ($opt{option} => $opt{o}) if $opt{option};

      my @missing;
      for (keys %{$opt{o}->{form}->{require}->{id}}) {
        unless (length $opt{o}->{wiki}->{input}->parameter
                     ($WIKIFORMCORE->control_id ($opt{o}, local_id => $_,
                                                 local_id_prefix => 'wikiform__')
                                   ->{local_id})) {
          push @missing, $_;
        }
      }
      if (@missing) {
        return [{
          type => 'required_param_missing',
          missing_id => \@missing,
        }];
      }
      
      ## Replace Output Template
      my $result;
      if ($ref eq 'form') {
        $opt{template} ||= $form->get_attribute_value
                                    ('template', default => '');
      } elsif ($ref eq 'comment') {
        $opt{template} ||= $WIKIRESOURCE->get
                             (name => 'SuikaWiki/0.9:form:comment:template',
                              o => $opt{o}, wiki => $opt{o}->{wiki});
      } elsif ($ref eq '#footannotate') {
        $opt{template} ||= $WIKIRESOURCE->get
                             (name => 'SuikaWiki/0.9:form:footannotate:template',
                              o => $opt{o}, wiki => $opt{o}->{wiki});
      }
      try {
        $result = SuikaWiki::Plugin->text_formatter ('form_template')
                         ->replace ($opt{template}, param => $opt{o});
      } catch Message::Util::Formatter::error with {
        my $err = shift;
        SuikaWiki::Plugin->module_package ('Error')
                         ->reporting_formatting_template_error
                             ($err, $err->{option}->{param}->{wiki});
##TODO: 
        throw SuikaWiki::View::Implementation::error -type => 'ERROR_REPORTED';
      };      

      ## Insert
      if (length $result) {
        if ($ref eq '#footannotate') {
          my $parent;
          for (@{$xml->child_nodes}) {
            if ($_->node_type eq '#element' and
                $_->local_name eq 'document') {
              for (@{$_->child_nodes}) {
                if ($_->node_type eq '#element' and
                    $_->local_name eq 'body') {
                  $parent = $_;
                  last;
                }
              }
            }
          }
          CORE::die "Buggy implementation: no body element".$xml
                    unless ref $parent;
          
          $parent->append_new_node (type => '#element',
                                    namespace_uri => $NS_SW09,
                                    local_name => 'text')
                 ->append_text ($result);
        } else {
          my $parent = $form->parent_node;
          CORE::die "Byggy implementation: No parent of form" unless ref $parent;
          my $children = $parent->child_nodes;
          
          $result .= "\x0A" unless substr ($result, -1) eq "\x0A";
          $parent->append_new_node (type => '#element',
                                    namespace_uri => $NS_SW09,
                                    local_name => 'text')
                 ->append_text ($result);
          my $node = pop @{$children};
          my $form_str = overload::StrVal ($form);
          my $i = 0;
          for (@{$children}) {
            last if overload::StrVal ($_) eq $form_str;
            $i++;
          }
          if ($opt{o}->{form}->{output}->{reverse}) {
            splice @{$children}, $i + 1, 0, $node;
          } else {
            splice @{$children}, $i, 0, $node;
          }
        }
      } else {
## TODO:
      }

      ## XML format -> Text format
      my $text = __FUNCPACK__->xml_to_text ($xml, {%opt});

      my %fragment = (fragment => $opt{o}->{form}->{output}->{id}
                            || 'wikiform-'.$opt{o}->{form}->{output}->{index});
      if (not $opt{o}->{form}->{output}->{reverse} and
          $opt{o}->{var}->{sw09__anchor_index}) {
        %fragment = (anchor_no => $opt{o}->{var}->{sw09__anchor_index});
      }

      my $action = [
        {
          type => 'write',
          content => $text,
          update_lastmodified => time,
        },
        {
          type => 'ok',
          %fragment,
        },
      ];

  @HeadSummary:
    @@Main:
      my $xml = __FUNCPACK__->get_xml_tree (text => $source, opt => \%opt,
                                            wiki => $self->{wiki});
      return $xml->inner_text;

FormattingRule:
  @Category[list]:form-template
  @Name: index
  @Description:
    @@@: Next anchor index number
    @@lang:en
  @After:
    if ($o->{var}->{sw09__anchor_index}) {
      ++$o->{var}->{sw09__anchor_index};
    } else {
      $o->{var}->{sw09__anchor_index}
        = 1 + __FUNCPACK__->get_last_anchor_index
                              ($o->{var}->{sw09__document_tree});
    }
    $p->{-result} .= $o->{var}->{sw09__anchor_index};

Function:
  @Name: get_last_anchor_index
  @Main:
      my (undef, $xml) = @_;
      my $anchor = 0;
      my $get_anchor_no;
      $get_anchor_no = sub {
        my $node = shift;
        for my $child (@{$node->child_nodes}) {
          my $nt = $child->node_type;
          if ($nt eq '#element') {
            if ($child->namespace_uri => $NS_SW09 and
                $child->local_name eq 'anchor-end') {
              my $a = $child->get_attribute_value ('anchor', default => 0,
                                                   namespace_uri => $NS_SW09);
              $anchor = 0+$a if $anchor < 0+$a;
            } else {
              $get_anchor_no->($child);
            }
          } elsif ($nt eq '#document' or $nt eq '#fragment') {
            $get_anchor_no->($child);
          }
        }
      };
      $get_anchor_no->($xml);
      $anchor;


Function:
  @Name: get_xml_tree
  @Main:
    my (undef, %opt) = @_;
    if ($opt{opt}->{page}) {
  ## TODO:
      unless ($__FUNCPACK__::DBLoaded) {
        $opt{wiki}->{db}->_set_prop_db (sw09__xml_tree => {-db_open => sub {
          require SuikaWiki::DB::Hash;
          new SuikaWiki::DB::Hash;
        }});
        $__FUNCPACK__::DBLoaded++;
      }
    
      my $xml = new Message::Markup::XML::Node type => '#fragment';
      __FUNCPACK__->text_to_xml (${$opt{text}}, {%{$opt{opt}}, -parent => $xml});

      $opt{wiki}->{db}->set (sw09__xml_tree => $opt{opt}->{page} => $xml);
      $xml;
    } else {
      my $xml = new Message::Markup::XML::Node type => '#fragment';
      __FUNCPACK__->text_to_xml (${$opt{text}}, {%{$opt{opt}}, -parent => $xml});
      $xml;
    }

Function:
  @Name: sw09_to_xhtml1
  @Main:
    my (undef, %opt) = @_;

      my ($apply_template, $apply_template_children);
      $apply_template_children = sub {
        for (@{$_[0]->child_nodes}) {
          $apply_template->($_ => $_[1]) unless $_->node_type eq '#attribute';
        }
      };
      $apply_template = sub {
        my ($source, $result) = @_;
        my $ln = $source->local_name;
        if ($source->node_type eq '#text') {
          $result->append_text ($source->inner_text);
        } elsif ({qw/code 1 samp 1 var 1 dfn 1 kbd 1 sub 1 sup 1/}->{$ln}) {
          my $node = $result->append_new_node
                                (type => '#element',
                                 namespace_uri => $NS_XHTML1,
                                 local_name => $ln);
          my $class = $source->get_attribute_value ('class', default => '');
          $node->set_attribute (class => $class) if $class;
          $apply_template_children->($source => $node);
        } elsif ({qw/ins 1 del 1 insert 1 delete 1/}->{$ln}) {
          my $node = $result->append_new_node
                                (type => '#element',
                                 namespace_uri => $NS_XHTML1,
                                 local_name => {qw/ins ins insert ins
                                                   delete del del del/}->{$ln});
          my $class = $source->get_attribute_value ('class', default => '');
          $node->set_attribute (class => $class) if $class;
          ## TODO: cite
          $apply_template_children->($source => $node);
        } elsif ({qw/table 1 tbody 1 tr 1 td 1 blockquote 1 ul 1 ol 1
                     li 1 pre 1 dl 1 dt 1 dd 1 em 1 strong 1/}->{$ln}) {
          my $node = $result->append_new_node
                                (type => '#element',
                                 namespace_uri => $NS_XHTML1,
                                 local_name => $ln);
          if ($ln eq 'td') {
            my $colspan = $source->get_attribute_value ('colspan', default => 0);
            $node->set_attribute (colspan => $colspan) if $colspan;
          } elsif ($ln eq 'pre') {
            $node->set_attribute (space => 'preserve', 
                                  namespace_uri => NS_xml_URI);
            my $class = $source->get_attribute_value ('class', default => '');
            $node->set_attribute (class => $class) if length $class;
          }
          $apply_template_children->($source => $node);
        } elsif ($ln eq 'anchor') {
          local $opt{o}->{var}->{sw09__anchor_content} = sub {
            $apply_template_children->($source => shift);
          };
          SuikaWiki::Plugin->module_package ('WikiLinking')
                           ->to_wikipage_in_html ({
            label => $WIKIRESOURCE->get_text
                                 (name =>
                                    'Link:SuikaWiki/0.9:toWikiPage:SourceLabel',
                                  param => $opt{o},
                                  wiki => $opt{o}->{wiki}),
          } => {
            base                => $opt{o}->{wiki}->{var}->{page},
            page_name_relative  => $opt{o}->{wiki}->name ($source->inner_text),
            page_anchor_no      => $source->get_attribute_value
                                     ('anchor',
                                      namespace_uri => $NS_SW09),
          }, {
            o => $opt{o},
            parent => $result,
          });
        } elsif ($ln eq 'p') {
          $apply_template_children->($source => $result->append_new_node
                                                  (type => '#element',
                                                   namespace_uri => $NS_XHTML1,
                                                   local_name => 'p'));
        } elsif ($ln eq 'h') {
          my $node;
          if ($opt{o}->{var}->{ws__section_depth} > 6) {
            $node = $result->append_new_node
                                (type => '#element',
                                 namespace_uri => $NS_XHTML1,
                                 local_name => 'div');
            $node->set_attribute (class => 'heading h'.$opt{o}->{var}
                                                   ->{ws__section_depth});
          } else {
            $node = $result->append_new_node
                                (type => '#element',
                                 namespace_uri => $NS_XHTML1,
                                 local_name => 'h'.$opt{o}->{var}
                                                       ->{ws__section_depth});
          }
          $apply_template_children->($source => $node);
          $WIKISTRUCT->set_section_id ($result, undef, $opt{o}->{wiki},
                                             title => $source->inner_text);
        } elsif ($ln eq 'ruby' or $ln eq 'rubyb') {
          my @child;
          for (@{$source->child_nodes}) {
            if ({qw/rb 1 rt 1/}->{$_->local_name}) {
              push @child, $_;
            }
          }
          for ($result->append_new_node (type => '#element',
                                         namespace_uri => $NS_XHTML1,
                                         local_name => 'ruby')) {
            if ($ln eq 'rubyb') {
              my $class = join ' ',
                               'descriptive',
                               split /\s+/, $source->get_attribute_value 
                                                       ('class', default => '');
              $_->set_attribute (class => $class) if $class;
            } else {
              my $class = $source->get_attribute_value ('class', default => '');
              $_->set_attribute (class => $class) if $class;
            }
            $apply_template_children->($child[0]
                     => $_->append_new_node (type => '#element',
                                             namespace_uri => $NS_XHTML1,
                                             local_name => 'rb'));
            $_->append_new_node (type => '#element',
                                 namespace_uri => $NS_XHTML1,
                                 local_name => 'rp')
             ->append_text ('(');
            if ($child[1]) {
              $apply_template_children->($child[1]
                     => $_->append_new_node (type => '#element',
                                             namespace_uri => $NS_XHTML1,
                                             local_name => 'rt'));
            } else {
              $_->append_new_node (type => '#element',
                                   namespace_uri => $NS_XHTML1,
                                   local_name => 'rt');
            }
            if ($child[2]) {
              $_->append_new_node (type => '#element',
                                   namespace_uri => $NS_XHTML1,
                                   local_name => 'rp')
                ->append_text ('/');
              $apply_template_children->($child[2]
                     => $_->append_new_node (type => '#element',
                                             namespace_uri => $NS_XHTML1,
                                             local_name => 'rt'));
            }
            $_->append_new_node (type => '#element',
                                 namespace_uri => $NS_XHTML1,
                                 local_name => 'rp')
              ->append_text (')');
          }
        } elsif ($ln eq 'abbr') {
          my (@b);
          for (@{$source->child_nodes}) {
            push @b, $_ if {qw/rb 1 rt 1/}->{$_->local_name};
          }
          my $node = $result->append_new_node
                                (type => '#element',
                                 namespace_uri => $NS_XHTML1,
                                 local_name => 'abbr');
          $node->set_attribute (title => $b[1]->inner_text) if $b[1];
          $apply_template_children->($b[0] => $node);
        } elsif ($ln eq 'q') {
          my $node = $result->append_new_node
                                (type => '#element',
                                 namespace_uri => $NS_XHTML1,
                                 local_name => 'q');
          ## TODO: cite
          $apply_template_children->($source => $node);
        } elsif ($ln eq 'weak') {
          my $node = $result->append_new_node
                                (type => '#element',
                                 namespace_uri => $NS_XHTML1,
                                 local_name => 'span');
          $node->set_attribute (class => 'weak');
          $apply_template_children->($source => $node);
        } elsif ({qw/section 1 bodytext 1/}->{$ln}) {
          my $node = $result->append_new_node
                                (type => '#element',
                                 namespace_uri => $NS_XHTML1,
                                 local_name => 'div');
          $node->set_attribute (class => $ln);
          local $opt{o}->{var}->{ws__section_depth}
              = $opt{o}->{var}->{ws__section_depth} + 1;
          $apply_template_children->($source => $node);
        } elsif ($ln eq 'anchor-end') {
          my $node = $result->append_new_node
                                (type => '#element',
                                 namespace_uri => $NS_XHTML1,
                                 local_name => 'a');
          $node->set_attribute (id => 'anchor-'.$source->get_attribute_value 
                                                  ('anchor', default => '0',
                                                   namespace_uri => $NS_SW09));
          $node->set_attribute (name => 'anchor-'.$source->get_attribute_value
                                                  ('anchor', default => '0',
                                                   namespace_uri => $NS_SW09))
            if $opt{o}->{wiki}->{var}->{client}->{downgrade}->{html_no_id};
          $node->set_attribute (class => 'anchor');
          $node->append_text ($source->inner_text);
        } elsif ($ln eq 'anchor-internal') {
          my $node = $result->append_new_node
                                (type => '#element',
                                 namespace_uri => $NS_XHTML1,
                                 local_name => 'a');
          $node->set_attribute (href => '#anchor-'.$source->get_attribute_value
                                                     ('anchor',
                                   namespace_uri => $NS_SW09, default => '0'));
          $node->set_attribute (class => 'wiki-anchor');
          $node->append_text ($source->inner_text);
        } elsif ($ln eq 'anchor-external') {
          local $opt{o}->{var}->{sw09__anchor_content} = sub {
            $apply_template_children->($source => shift);
          };
          $WIKILINKING
                ->to_resource_in_html (
                    {
                     label => $WIKIRESOURCE
                                ->get_text (name =>
                                   'Link:SuikaWiki/0.9:toResource:SourceLabel',
                                   param => $opt{o},
                                   wiki => $opt{o}->{wiki}),
                    }, {
                      resource_scheme =>
                        $source->get_attribute_value ('resScheme',
                                                      namespace_uri => $NS_SW09,
                                                      default => 'URI'),
                      resource_parameter =>
                        $source->get_attribute_value ('resParameter',
                                                      namespace_uri => $NS_SW09,
                                                      default => ''),
                    }, {
                     o => $opt{o},
                     parent => $result,
                    });
        } elsif ($ln eq 'form') {
          my $ref = $source->get_attribute_value ('ref', default => 'form');
          if ($ref eq 'form') {
            $WIKIFORMCORE->make_content_form_in_html 
                                 ($result,
                                  $source->get_attribute_value
                                                    ('input', default => ''),
                                  option => $source->get_attribute_value
                                                       ('option'),
                                  name => $source->get_attribute_value ('id'),
                                  o => $opt{o},
                                  wiki => $opt{o}->{wiki},
                                  output => {
                                    page => $opt{page},
                                  });
          } elsif ($ref eq 'comment') {
            $WIKIFORMCORE->make_content_form_in_html
                                 ($result,
                                  $WIKIRESOURCE->get
                                    (name => 'SuikaWiki/0.9:form:comment:input',
                                     o => $opt{o}, wiki => $opt{o}->{wiki}),
                                  option => $WIKIRESOURCE->get
                                    (name => 'SuikaWiki/0.9:form:comment:option',
                                     o => $opt{o}, wiki => $opt{o}->{wiki}),
                                  name => $source->get_attribute_value ('id'),
                                  o => $opt{o},
                                  wiki => $opt{o}->{wiki},
                                  output => {
                                    page => $opt{page},
                                  });
          } else {
 ## TODO:
          }
        } elsif ($ln eq 'dr') {
          $apply_template_children->($source => $result);
        } elsif ($ln eq 'document') {
          my $body;
          for (@{$source->child_nodes}) {
            $body = $_ and last if $_->local_name eq 'body';
          }
          my $body_block = $result->append_new_node
                                                  (type => '#element',
                                                   namespace_uri => $NS_XHTML1,
                                                   local_name => 'div');
          $body_block->set_attribute (class => 'block SuikaWiki-0-9');
          $apply_template_children->($body => $body_block);
        } else {
          my $node = $result->append_new_node
                                (type => '#element',
                                 namespace_uri => $NS_XHTML1,
                                 local_name => 'span');
          $node->set_attribute (class => 'warn');
          for ($node->append_new_node
                                (type => '#element',
                                 namespace_uri => $NS_XHTML1,
                                 local_name => 'ins')
                    ->append_new_node
                                (type => '#element',
                                 namespace_uri => $NS_XHTML1,
                                 local_name => 'code')) {
            $_->set_attribute (class => 'XML element');
            $_->append_text ("<".$source->namespace_uri.">:$ln");
          }
          $apply_template_children->($source => $node);
        }
      };
      
      $apply_template_children->($opt{source} => $opt{parent});


Function:
  @Name: xml_to_text
  @Main:
    my (undef, $src, $opt) = @_;


    my %is_block = (
      qw/p 1 blockquote 1 pre 1 ul 1 ol 1 dl 1 section 1 h 1
         bodytext 1 document 1 head 1 body 1 table 1 text 1 form 1
         insert 1 delete 1/
    );

        my %x2t;
        %x2t = (
          anchor => sub {
            my $source = shift;
            my $result = '[['
                      .  $x2t{'#inline'}->($source, no_newline => 1)
                      .  ']';
            my $anchor = $source->get_attribute_value 
                                  ('anchor',
                                   namespace_uri => $NS_SW09,
                                   default => '');
            if (length $anchor) {
              $result .= '>>'.(0+$anchor);
            } else {
              $anchor = $source->get_attribute_value
                                  ('resScheme',
                                   namespace_uri => $NS_SW09);
              if ($anchor) {
                my $param = $source->get_attribute_value
                                  ('resParameter',
                                   namespace_uri => $NS_SW09);
                if ($anchor eq 'URI' and $param =~ /^[0-9A-Za-z_+.%-]+:/) {
                  $result .= '<' . $param . '>';
                } else {
                  $result .= '<' . $anchor . ':' . $param . '>';
                }
              }
            }
            $result . ']';
          },
          li => sub {
            my $source = shift;
            my $result = ({qw/ul - ol =/}->{$opt->{o}->{var}->{sw09__list_type}}
                          x $opt->{o}->{var}->{sw09__list_depth})
                      .  ' ' . $x2t{'#flow'}->($source);
            $result;
          },
          dt => sub {
            ':' . $x2t{'#inline'}->(return, no_newline => 1) . ':';
          },
          h => sub {
              ("*" x ($opt->{o}->{var}->{ws__section_depth} - 1))
            .  " "
            .  $x2t{'#inline'}->(shift, no_newline => 1);
          },
          'anchor-end' => sub {
            return shift->inner_text;
          },
          'anchor-internal' => sub {
            return shift->inner_text;
          },
          'anchor-external' => sub {
            return '<'.shift->inner_text.'>';
          },
          form => sub {
            my $source = shift;
            my $ref = $source->get_attribute_value ('ref', default => 'form');
            my $result = '[[#'.$ref;
            my $name = $source->get_attribute_value ('id');
            $name =~ s/([()\\])/\\$1/g;
            $result .= '(' . $name . ')' if $name;
            ## General WikiForm
            if ($ref eq 'form') {
              $result .= ":'";
              my $input = $source->get_attribute_value ('input', default => '');
              $input =~ s/(['\\])/\\$1/g;
              $result .= $input . "':'";
              my $template = $source->get_attribute_value ('template', default => '');
              $template =~ s/(['\\])/\\$1/g;
              $result .= $template . "'";
              my $option = $source->get_attribute_value ('option');
              if ($option) {
                $option =~ s/(['\\])/\\$1/g;
                $result .= ":'" . $option . "'";
              }
            ## Specific WikiForm
            } else {
              my $param = $source->get_attribute_value ('parameter');
              if ($param) {
                $result .= ':' . $param;
              }
            }
            $result .= ']]';
          },
          pre => sub {
            my $source = shift;
            my $result = '[PRE';
            my $class = $source->get_attribute_value ('class');
            if ($class) {
              $class =~ s/([\\()])/\\$1/g;
              $result .= '(' . $class . ')';
            }
            $result .= "[\x0A"
                    .  $x2t{'#inline'}->($source);
            $result .= "\x0A" unless substr ($result, -1) eq "\x0A";
            $result .= "]PRE]\x0A";
          },
          insert => sub {
            my $source = shift;
            my $result = '[INS';
            my $class = $source->get_attribute_value ('class');
            if ($class) {
              $class =~ s/([\\()])/\\$1/g;
              $result .= '(' . $class . ')';
            }
            local $opt->{o}->{var}->{sw09__list_depth} = 0;
            $result .= "[\x0A"
                    .  $x2t{'#block'}->($source);
            $result .= "\x0A" unless substr ($result, -1) eq "\x0A";
            $result .= "]INS]\x0A";
          },
          delete => sub {
            my $source = shift;
            my $result = '[DEL';
            my $class = $source->get_attribute_value ('class');
            if ($class) {
              $class =~ s/([\\()])/\\$1/g;
              $result .= '(' . $class . ')';
            }
            local $opt->{o}->{var}->{sw09__list_depth} = 0;
            $result .= "[\x0A"
                    .  $x2t{'#block'}->($source);
            $result .= "\x0A" unless substr ($result, -1) eq "\x0A";
            $result .= "]DEL]\x0A";
          },
          document => sub {
            my $source = shift;
            my $result = '#?'
                       . $source->get_attribute_value
                                    ('Name', namespace_uri => $NS_SW09,
                                     default => 'SuikaWiki')
                       . '/'
                       . $source->get_attribute_value
                                    ('Version', namespace_uri => $NS_SW09,
                                     default => '0.9');
            for (@{$source->child_nodes}) {
              $result .= ($x2t{$_->local_name} or $x2t{'#undef'})->($_)
                if $_->node_type eq '#element';
            }
            $result;
          },
          head => sub {
            my $source = shift;
            my $result = '';
            for (@{$source->child_nodes}) {
              if ($_->node_type eq '#element' and 
                  $_->local_name eq 'parameter') {
                $result .= ' '.$x2t{parameter}->($_);
              }
            }
            $result . "\x0A";
          },
          parameter => sub {
            my $source = shift;
            my $result = $source->get_attribute_value ('name', default => '')
                      .  '="';
            my @v;
            for (@{$source->child_nodes}) {
              push @v, $x2t{value}->($_) if $_->node_type eq '#element' and
                                            $_->local_name eq 'value';
            }
            $result .= join ',', @v;
            $result .  '"';
          },
          value => sub {
            my $value = $x2t{'#inline'}->(shift, no_newline => 1);
            $value =~ s/(["\\])/\\$1/g;
            $value =~ tr/\x0A\x0D/ /;
            $value;
          },
          section => sub {
            local $opt->{o}->{var}->{ws__section_depth}
                = $opt->{o}->{var}->{ws__section_depth} + 1;
            $x2t{'#block'}->(shift);
          },
          body => sub {
            local $opt->{o}->{var}->{ws__section_depth} = 1;
            $x2t{'#block'}->(shift);
          },
          text => sub {
            my ($source, %opt) = @_;
            my $result .= '';
            for (@{$source->child_nodes}) {
              if ($_->node_type eq '#text') {
                $result .= $_->inner_text;
              } elsif ($_->node_type eq '#element') {
                $result .= ($x2t{$_->local_name} or $x2t{'#undef'})->($_);
              }
            }
            $result;
          },
          dr => sub {
            my $result = $x2t{'#list'}->(shift);
            if ($result) {
              $result . "\x0A";
            } else {
              "::\x0A";
            }
          },
          dt => sub {
            ':' . $x2t{'#inline'}->(shift, no_newline => 1) . ':';
          },
          dd => sub {
            $x2t{'#inline'}->(shift);
          },
          tr => sub {
            my $result = $x2t{'#list'}->(shift);
            if ($result) {
              substr ($result, 1) . "\x0A";
            } else {
             "',\x0A";
            }
          },
          td => sub {
            my $source = shift;
            my $result = $x2t{'#inline'}->($source, no_newline => 1);
            if ($result =~ /[,"\\]/ or $result =~ /==/) {
              $result =~ s/(["\\])/\\$1/g;
              $result = '"' . $result . '"';
            }
            my $colspan = $source->get_attribute_value ('colspan', default => 1);
            $result .= ("\t,==" x ($colspan - 1)) if $colspan > 1;
            "\t," . $result;
          },
          em => sub {
            "''" . $x2t{'#inline'}->($_, no_newline => 1) . "''";
          },
          strong => => sub {
            "'''" . $x2t{'#inline'}->($_, no_newline => 1) . "'''";
          },
          rb => sub {
            $x2t{'#inline'}->(shift, no_newline => 1);
          },
          rt => sub {
            '] [' . $x2t{'#inline'}->(shift, no_newline => 1);
          },
          replace => sub {
            '__&&' . shift->get_attribute_value ('by', default => '') . '&&__';
          },
          bodytext => sub {
            my ($source, %opt) = @_;
            local $opt->{o}->{var}->{sw09__bq_depth}
                = $opt->{o}->{var}->{sw09__bq_depth} + 1;
            my @result;
            for (@{$source->child_nodes}) {
              if ($_->node_type eq '#element') {
                my $ln = $_->local_name; 
                push @result, [($x2t{$ln} or $x2t{'#undef'})->($_),
                               $ln];
              }
            }
            my $result = '';
            my $prev = '';
            for (@result) {
              my $s = $_->[0];
              if ($_->[1] eq 'p') {
                $result .= "\x0A" if length $result and
                                     substr ($result, -1) ne "\x0A";
                $result .= ('>' x $opt->{o}->{var}->{sw09__bq_depth}) . ' ';
              } elsif ($_->[1] eq 'form' or $_->[1] eq 'replace') {
                $result .= "\x0A" if length $result and 
                                     substr ($result, -1) ne "\x0A";
                $result .= ('>' x $opt->{o}->{var}->{sw09__bq_depth})."\x0A";
              } elsif ($_->[1] eq 'blockquote' or $_->[1] eq 'text') {
                $result .= "\x0A" if length $result and 
                                     substr ($result, -1) ne "\x0A";
              } else {
                unless ($prev eq 'text') {
                  $result .= "\x0A" if length $result and 
                                       substr ($result, -1) ne "\x0A";
                }
                $result .= ('>' x $opt->{o}->{var}->{sw09__bq_depth})."\x0A";
              }
              $result .= $s;
              $prev = $_->[1];
            }
            $result;
          },
          ## Note: This element will be interpreted as a paragraph
          ##       unless format is SuikaWikiImage/0.9.
          image => sub {
            my ($source, %opt) = @_;
            return "\x0A__IMAGE__\x0A" . $source->inner_text . "\x0A";
          },
          '#block' => sub {
            my ($source, %opt) = @_;
            my @result;
            for (@{$source->child_nodes}) {
              if ($_->node_type eq '#element') {
                my $ln = $_->local_name; 
                push @result, [($x2t{$ln} or $x2t{'#undef'})->($_),
                               $ln];
              }
            }
            my $result = '';
            my $prev = '';
            for (@result) {
              my $s = $_->[0];
              if ($_->[1] eq 'form') {
                $result .= "\x0A" if length $result and 
                                     substr ($result, -1) ne "\x0A";
                $result .= "\x0A";
              } elsif ($_->[1] eq 'replace') {
                $result .= "\x0A" if length $result and 
                                     substr ($result, -1) ne "\x0A";
              } elsif ($_->[1] eq 'text') {
                $result .= "\x0A" if length $result and
                                     substr ($result, -1) ne "\x0A";
                $result .= "\x0A" if $prev eq 'p';
              } else {
                if ($prev ne 'text' and $prev ne 'replace') {
                  $result .= "\x0A" if length $result and 
                                       substr ($result, -1) ne "\x0A";
                  $result .= "\x0A";
                }
              }
              $result .= $s;
              $prev = $_->[1];
            }
            $result;
          },
          '#flow' => sub {
            my ($source, %opt) = @_;
            my @result;
            for (@{$source->child_nodes}) {
              if ($_->node_type eq '#element') {
                my $ln = $_->local_name;
                if ($is_block{$ln}) {
                  push @result, [($x2t{$ln} or $x2t{'#undef'})->($_),
                                 $ln];
                } else {
                  if (@result and ($result[$#result]->[1] eq '#inline')) {
                    $result[$#result]->[0] 
                      .= ($x2t{$ln} or $x2t{'#undef'})->($_);
                  } else {
                    push @result, [($x2t{$ln} or $x2t{'#undef'})->($_),
                                   '#inline'];
                  }
                }
              } elsif ($_->node_type eq '#text') {
                if (@result and ($result[$#result]->[1] eq '#inline')) {
                  $result[$#result]->[0] .= $_->inner_text;
                } else {
                  push @result, [$_->inner_text, '#inline'];
                }
              }
            }
            my $result = '';
            my $prev = '';
            for (@result) {
              my $s = $_->[0];
              if ($_->[1] eq '#inline') {
                if ($prev ne 'text' and $prev ne 'form' and $prev ne 'replace') {
                  $result .= "\x0A" if length $result and 
                                       substr ($result, -1) ne "\x0A";
                }
                $s =~ s/\x0D\x0A/\x0A/g;
                $s =~ s/\x0D/\x0A/g;
                $s =~ s/\x0A\x0A+/\x0A/g;
                $s =~ s/\x0A/\x20/g if $opt{no_newline};
              } elsif ($_->[1] eq 'form' or $_->[1] eq 'replace') {
                if ($prev ne '#inline') {
                  $result .= "\x0A" if length $result and 
                                       substr ($result, -1) ne "\x0A";
                }
              } elsif ($_->[1] eq 'text') {
                $result .= "\x0A" if length $result and 
                                     substr ($result, -1) ne "\x0A";
              } else {
                unless ($prev eq 'text') {
                  $result .= "\x0A" if length $result and 
                                       substr ($result, -1) ne "\x0A";
                }
              }
              $result .= $s;
              $prev = $_->[1];
            }
            $result;
          },
          '#inline' => sub {
            my ($source, %opt) = @_;
            my $result .= '';
            for (@{$source->child_nodes}) {
              if ($_->node_type eq '#text') {
                $result .= $_->inner_text;
              } elsif ($_->node_type eq '#element') {
                $result .= ($x2t{$_->local_name} or $x2t{'#undef'})->($_);
              }
            }
            $result =~ s/\x0D\x0A/\x0A/g;
            $result =~ s/\x0D/\x0A/g;
            $result =~ s/\x0A\x0A+/\x0A/g;
            $result =~ s/\x0A/\x20/g if $opt{no_newline};
            $result;
          },
          '#list' => sub {
            my ($source, %opt) = @_;
            my $result .= '';
            for (@{$source->child_nodes}) {
              if ($_->node_type eq '#element') {
                $result .= ($x2t{$_->local_name} or $x2t{'#undef'})->($_);
              }
            }
            $result;
          },
          '#undef' => sub {
            my $source = shift;
            ## TODO:
            "<".$source->namespace_uri.">:".$source->local_name
                  .  $x2t{'#inline'}->($source);
          },
        );
        for (qw/blockquote dl tbody table/) {
          $x2t{$_} = sub { $x2t{'#list'}->(shift) };
        }
        for (qw/p dd/) {
          $x2t{$_} = sub { $x2t{'#flow'}->(shift) };
        }
        for my $type (qw/ul ol/) {
          $x2t{$type} = sub {
            my $source = shift;
            local $opt->{o}->{var}->{sw09__list_type} = $type;
            local $opt->{o}->{var}->{sw09__list_depth}
                = $opt->{o}->{var}->{sw09__list_depth} + 1;
            my @result;
            for (@{$source->child_nodes}) {
              push @result, $x2t{$_->local_name}->($_)
                if $_->node_type eq '#element';
            }
            my $result = '';
            for (@result) {
              $result .= "\x0A" unless substr ($result, -1) eq "\x0A";
              $result .= $_;
            }
            substr ($result, 1);
          };
        }
        for my $type (qw/code samp var dfn kbd sub sup weak q ruby rubyb
                         abbr ins del/) {
          $x2t{$type} = sub {
            my $source = shift;
            my $result = '['.uc $type;
            my $class = $source->get_attribute_value ('class', default => '');
            if ($class) {
              $class =~ s/([()\\])/\\$1/g;
              $result .= '(' . $class . ')';
            }
            $result .= '['
                    .  $x2t{'#inline'}->($source, no_newline => 1)
                    .  ']';
            my $anchor = $source->get_attribute_value 
                                  ('anchor',
                                   namespace_uri => $NS_SW09,
                                   default => '');
            if (length $anchor) {
              $result .= '>>'.(0+$anchor);
            } else {
              $anchor = $source->get_attribute_value
                                  ('resScheme',
                                   namespace_uri => $NS_SW09);
              if ($anchor) {
                my $param = $source->get_attribute_value
                                  ('resParameter',
                                   namespace_uri => $NS_SW09);
                if ($anchor eq 'URI' and $param =~ /^[0-9A-Za-z_+.%-]+:/) {
                  $result .= '<' . $param . '>';
                } else {
                  $result .= '<' . $anchor . ':' . $param . '>';
                }
              }
            }
            $result .= ']';
            $result;
          };
        }

    $x2t{'#list'}->($src);

Function:
  @Name: get_nth_element
  @Main:
    my (undef, $node, $ns => $ln, $n) = @_;
    return $n if $n < 1;
    if ($node->node_type eq '#element' and
        $node->namespace_uri eq $ns and
        $node->local_name eq $ln) {
      return $node unless --$n;
    }
    for (@{$node->child_nodes}) {
      if ($_->node_type eq '#element') {
        if ($_->namespace_uri eq $ns and
            $_->local_name eq $ln) {
          return $_ unless --$n;
        } else {
          $n = __FUNCPACK__->get_nth_element ($_, $ns => $ln, $n);
          return $n if ref $n;
        }
      } elsif ($_->node_type eq '#fragment' or $_->node_type eq '#document') {
        $n = __FUNCPACK__->get_nth_element ($_, $ns => $ln, $n);
        return $n if ref $n;
      }
    }
    return $n;

Function:
  @Name: get_element_by_id
  @Main:
    my (undef, $node, $id) = @_;
    return $node if $node->node_type eq '#element'
                and $node->get_attribute_value ('id', default_value => '')
                 eq $id;
    for (@{$node->child_nodes}) {
      if ({'#element'=>1, '#fragment'=>1, '#document'=>1}->{$_->node_type}) {
        my $r = __FUNCPACK__->get_element_by_id ($_, $id);
        return $r if $r;
      }
    }

Function:
  @Name: text_to_xml
  @Description:
    @@@:
      Converting SuikaWiki/0.9 text format to XML representation
    @@lang: en
  @Main:
    my (undef, $source, $opt) = @_;
    $source =~ s/\x0D\x0A/\x0A/g;
    $source =~ tr/\x0D/\x0A/;
    $source .= "\x0A";
    my $root = $opt->{-parent}
                   ->append_new_node (type => '#element',
                                      namespace_uri => $NS_SW09,
                                      local_name => 'document');
    my $head = $root->append_new_node (type => '#element',
                                       namespace_uri => $NS_XHTML2,
                                       local_name => 'head');
    $root->append_text ("\x0A");
    my $body = $root->append_new_node (type => '#element',
                                       namespace_uri => $NS_XHTML2,
                                       local_name => 'body');
    $root->append_text ("\x0A");

    if ($source =~ s#^\#\?(SuikaWiki(?:Image)?)/0\.9\b((?>.*))\s*##) {
      my $type = $1;
      my $param = $2;
      $root->set_attribute (Name => $type, namespace_uri => $NS_SW09);
      $root->set_attribute (Version => '0.9', namespace_uri => $NS_SW09);
      while ($param =~ /\G\s+([a-z-]+)="((?>[^"\\]*)(?>(?>[^"\\]+|\\.)*))"/g) {
        my ($name, $value) = ($1, $2);
        $value =~ s/\\(.)/$1/g;
        for ($head->append_new_node (type => '#element',
                                     namespace_uri => $NS_SW09,
                                     local_name => 'parameter')) {
          $_->set_attribute (name => $name);
          for my $value (split /,/, $value) {
            $_->append_new_node (type => '#element',
                                 namespace_uri => $NS_SW09,
                                 local_name => 'value')
              ->append_text ($value);
          }
        }
        $head->append_text ("\x0A");
      }
      
      if ($type eq 'SuikaWikiImage') {
        $source =~ s/\x0A__IMAGE__\x0A(.*)$//s;
        if (my $image = $1) {
          $image =~ s/^\s+//;
          $image =~ s/\s+$//;
          $root->append_new_node
                   (type => '#element',
                    namespace_uri => $NS_SW09,
                    local_name => 'image')
               ->append_text ($image);
          $root->append_text ("\x0A");
        }
      }
    } else {
      $root->set_attribute (Name => 'SuikaWiki', namespace_uri => $NS_SW09);
      $root->set_attribute (Version => '0.9', namespace_uri => $NS_SW09);
      ## TODO: warn
    }
    
    __FUNCPACK__->block_text_to_xml (\$source => $body, opt => $opt);

Function:
  @Name:block_text_to_xml
  @Description:
    @@@:
      SuikaWiki/0.9 text format to XML representation convertion - block 
      level elements
    @@lang:en
  @Main:
    my (undef, $source, $current, %opt) = @_;
    my %depth = %{$opt{depth} || {}};
    my $back_to_section = sub {
      my $cur_type = $current->local_name;
      while (not (
                  $cur_type eq 'section'
               or $cur_type eq 'body'
               or $cur_type eq 'bodytext'
               or $cur_type eq 'insert'
               or $cur_type eq 'delete'
                 )
      ) {
        $current = $current->parent_node;
        $cur_type = $current->local_name;
      }
      delete $depth{list};
    };
    my $back_to_real_section = sub {
      my $cur_type = $current->local_name;
      while (not (
                  $cur_type eq 'section'
               or $cur_type eq 'body'
               or $cur_type eq 'insert'
               or $cur_type eq 'delete'
                 )
            ) {
        $current = $current->parent_node;
        $cur_type = $current->local_name;
      }
      delete $depth{bq};
      delete $depth{list};
    };
    while ($$source =~ /\G([^\x0A]*)\x0A/gc) {
      my $line = $1;
      if ($line eq '') {
        $back_to_real_section->();
      } elsif ($line =~ s/^([-=]+)\s*//) {
        my $list_type = substr ($1, -1) eq '-' ? 'ul' : 'ol';
        my $depth = length $1;
        my $parent_type = $current->parent_node->local_name;
        ## Parent node is list element
        if ($parent_type eq 'ul' or $parent_type eq 'ol') {
          if ($depth{list} == $depth) {
            if ($parent_type eq $list_type) {
              $current = $current->parent_node;
            } else {
              $current = $current->parent_node
                                 ->parent_node
                                 ->append_new_node
                                     (type => '#element',
                                      namespace_uri => $NS_XHTML2,
                                      local_name => $list_type);
            }
          } elsif ($depth < $depth{list}) {
            for ($depth+1..$depth{list}) {
              $current = $current->parent_node->parent_node;
            }
            $current = $current->parent_node;
            if ($current->local_name ne $list_type) {
              $current = $current->parent_node
                                 ->append_new_node
                                     (type => '#element',
                                      namespace_uri => $NS_XHTML2,
                                      local_name => $list_type);
            }
            $depth{list} = $depth;
          } else { # $depth{list} < $depth
            $current = $current->append_new_node
                                   (type => '#element',
                                    namespace_uri => $NS_XHTML2,
                                    local_name => $list_type);
            $depth{list}++;
          }
        ## Parent node is non-list element
        } else {
          $current = $current->append_new_node (type => '#element',
                                                namespace_uri => $NS_XHTML2,
                                                local_name => $list_type);
          $depth{list} = 1;
        }
        $current->append_text ("\x0A".("  " x $depth{list}));
        $current = $current->append_new_node (type => '#element',
                                              namespace_uri => $NS_XHTML2,
                                              local_name => 'li');
        __FUNCPACK__->inline_text_to_xml (\$line => $current, %opt);
      } elsif ($line =~ s/^(\*+)\s*//) {
        my $depth = length $1;
        $back_to_real_section->();
        if ($depth <= $depth{section}) {
          for ($depth..$depth{section}) {
            $back_to_real_section->();
            $current = $current->parent_node;
          }
          $depth{section} = $depth;
        } else { # $depth{section} < $depth
          for ($depth{section}+2..$depth) {
            $current = $current->append_new_node
                                   (type => '#element',
                                    namespace_uri => $NS_XHTML2,
                                    local_name => 'section');
          }
          $depth{section} = $depth;
        }
        $current = $current->append_new_node
                               (type => '#element',
                                namespace_uri => $NS_XHTML2,
                                local_name => 'section');
        __FUNCPACK__->inline_text_to_xml (\$line =>
          $current->append_new_node (type => '#element',
                                     namespace_uri => $NS_XHTML2,
                                     local_name => 'h'), %opt,
        );
      } elsif ($line =~ s/^(?!>>[0-9])(>+)\s*//) {
        my $depth = length $1;
        if ($depth <= $depth{bq}) {
          for ($depth+1..$depth{bq}) {
            $back_to_section->();
            $current = $current->parent_node->parent_node;
          }
          $back_to_section->();
          $current->append_text ("\x0A");
          $depth{bq} = $depth;
        } else { # $depth{bq} < $depth
          $back_to_section->();
          for ($depth{bq}+1..$depth) {
            $current = $current->append_new_node
                                   (type => '#element',
                                    namespace_uri => $NS_XHTML2,
                                    local_name => 'blockquote')
                               ->append_new_node
                                   (type => '#element',
                                    namespace_uri => $NS_HTML3,
                                    local_name => 'bodytext');
            $current->append_text ("\x0A");
          }
          $depth{bq} = $depth;
        }
        if (length $line) {
          $current = $current->append_new_node
                                 (type => '#element',
                                  namespace_uri => $NS_XHTML2,
                                  local_name => 'p');
          __FUNCPACK__->inline_text_to_xml (\$line => $current, %opt);
        }
      } elsif ($line =~ s/^(?>:\s*)([^:]+?)\s*:\s*//) {
        my $parent_type = $current->local_name;
        if ($parent_type eq 'dd') {
          $current = $current->parent_node->parent_node;
          $current->append_text ("\x0A");
        } else { #if ($parent_type ne 'dl') {
          $current = $current->append_new_node (type => '#element',
                                                namespace_uri => $NS_XHTML2,
                                                local_name => 'dl');
        }
        $current = $current->append_new_node
                               (type => '#element',
                                namespace_uri => $NS_SW09,
                                local_name => 'dr');
        __FUNCPACK__->inline_text_to_xml (\"$1" =>
          $current->append_new_node (type => '#element',
                                     namespace_uri => $NS_XHTML2,
                                     local_name => 'dt'), %opt,
        );
        $current->append_text ("\x0A");
        $current = $current->append_new_node (type => '#element',
                                              namespace_uri => $NS_XHTML2,
                                              local_name => 'dd');
          __FUNCPACK__->inline_text_to_xml (\$line => $current, %opt);
      } elsif ($line =~ /^\[(INS|DEL)(?>(\([^()\\]*\))?)\[\s*$/) {
        $current->append_text ("\x0A");
        my $mod = $current->append_new_node
                              (type => '#element',
                               namespace_uri => $NS_SW09,
                               local_name => {qw/INS insert DEL delete/}->{$1});
        $mod->set_attribute (class => $2) if $2;
        __FUNCPACK__->block_text_to_xml ($source => $mod, %opt,
                                         'return_by_'.$1 => 1,
                                         depth => \%depth);
      } elsif ($line =~ /^\](INS|DEL)\]\s*$/) {
        if ($opt{'return_by_'.$1}) {
          return;
        } else {
          ## TODO: warn
        }
      } elsif ($line =~ /^\[PRE(?>(?>\(((?>[^()\\]*)(?>(?>[^()\\]+|\\.)*))\))?)\[\s*$/) {
        $current->append_text ("\x0A");
        my $pre = $current->append_new_node (type => '#element',
                                             namespace_uri => $NS_XHTML1,
                                             local_name => 'pre');
        $pre->set_attribute (class => $1) if $1;
        $pre->set_attribute (space => 'preserve', namespace_uri => NS_xml_URI);
        my $f = 1;
        while ($$source =~ /\G([^\x0A]*)\x0A/gc) {
          my $line = $1;
          if ($line =~ /^\]PRE\]\s*$/) {
            undef $pre;
            last;
          } else {
            $f ? undef $f : $pre->append_text ("\x0A");
            __FUNCPACK__->inline_text_to_xml (\$line => $pre, %opt);
          }
        }
        if (ref $pre) {
          # warn unmatched start-tag
        }
      } elsif ($line =~ /^\s/) {
        $current->append_text ("\x0A");
        my $pre = $current->append_new_node (type => '#element',
                                             namespace_uri => $NS_XHTML1,
                                             local_name => 'pre');
        $pre->set_attribute (space => 'preserve', namespace_uri => NS_xml_URI);
        __FUNCPACK__->inline_text_to_xml (\$line => $pre, %opt);
        while ($$source =~ /\G([^\x0A]*)\x0A/gc) {
          my $line = $1;
          if (length $line == 0) {
            pos ($$source) -= 1;
            last;
          } elsif ($opt{return_by_INS} and $line =~ /^\]INS\]\s*$/) {
            return;
          } elsif ($opt{return_by_DEL} and $line =~ /^\]DEL\]\s*$/) {
            return;
          } else {
            $pre->append_text ("\x0A");
            __FUNCPACK__->inline_text_to_xml (\$line => $pre, %opt);
          }
        }
      } elsif ($line =~ /^,/) {
        $current->append_text ("\x0A");
        my $tbody = $current->append_new_node (type => '#element',
                                               namespace_uri => $NS_XHTML2,
                                               local_name => 'table')
                            ->append_new_node (type => '#element',
                                               namespace_uri => $NS_XHTML2,
                                               local_name => 'tbody');
        __FUNCPACK__->tablerow_text_to_xml (\$line => $tbody, %opt);
        while ($$source =~ /\G(,[^\x0A]*)\x0A/gc) {
          __FUNCPACK__->tablerow_text_to_xml (\"$1" => $tbody, %opt);
        }
      } else {
        my $current_type = $current->local_name;
        if ($current_type eq 'section' 
         or $current_type eq 'body'
         or $current_type eq 'bodytext'
         or $current_type eq 'insert'
         or $current_type eq 'delete') {
          $current->append_text ("\x0A");
          if ($line =~ s/^__&&([^&]+)&&__//) {
            $current->append_new_node (type => '#element',
                                       namespace_uri => $NS_SW09,
                                       local_name => 'replace')
                    ->set_attribute (by => $1);
          } elsif ($line =~ s/^\[\[$Reg_Form_Content_M\]\]//o) {
            for ($current->append_new_node (type => '#element',
                                            namespace_uri => $NS_SW09,
                                            local_name => 'form')) {
              $_->set_attribute (id => $1) if $1;
              my ($i, $t, $o) = ($2, $3 || '', $4 || '');
              s/\\(.)/$1/g for ($i, $t, $o);
              $_->set_attribute (input => $i);
              $_->set_attribute (template => $t);
              $_->set_attribute (option => $o);
            }
          } elsif ($line =~ s/^\[\[$Reg_Embed_Content_M\]\]//o) {
            for ($current->append_new_node (type => '#element',
                                            namespace_uri => $NS_SW09,
                                            local_name => 'form')) {
              $_->set_attribute (ref => $1);
              $_->set_attribute (id => $2) if $2;
              $_->set_attribute (parameter => $3) if defined $3;
            }
          }
          if (length $line) {
            $current = $current->append_new_node 
                                   (type => '#element',
                                    namespace_uri => $NS_XHTML2,
                                    local_name => 'p');
            __FUNCPACK__->inline_text_to_xml (\$line => $current, %opt);
          }        
        } else {
          $current->append_text ("\x0A"); # replacement of prev.line's \n
          __FUNCPACK__->inline_text_to_xml (\$line => $current, %opt);
        }
      }
    }
    
    if ($opt{return_by_INS} or $opt{return_by_DEL}) {
      # warn
    }

Function:
  @Name: tablerow_text_to_xml
  @Description:
    @@@:
      SuikaWiki/0.9 text format to XML representation - table row
    @@lang:en
  @Main:
    my (undef, $source => $current, %opt) = @_;
    $current->append_text ("\x0A");
    $current = $current->append_new_node (type => '#element',
                                          namespace_uri => $NS_XHTML2,
                                          local_name => 'tr');
    my $prev_cell;
    while ($$source =~ /\G,\s*/gc) {
      $$source =~ /\G([^,"][^,]*|"(?>[^"\\]*)(?>(?>[^"\\]+|\\.)*)"\s*)/gc;
      my $cell = $1;
      if ($cell =~ s/^"//) {
        $cell =~ s/"\s*$//g;
        $cell =~ s/\\(.)/$1/g;
      } else {
        $cell =~ s/\s+$//g;
        if ($cell eq '==') {
          if (ref $prev_cell) {
            $prev_cell->set_attribute (colspan => 
              $prev_cell->get_attribute_value ('colspan', default => 1)
            + 1);
            next;
          } else {
            # TODO: warn
          }
        }
      }
      $prev_cell = $current->append_new_node
                               (type => '#element',
                                namespace_uri => $NS_XHTML2,
                                local_name => 'td');
      __FUNCPACK__->inline_text_to_xml (\$cell => $prev_cell, %opt);
    }
    # TODO: warn

Function:
  @Name: inline_text_to_xml
  @Description:
    @@@: 
      SuikaWiki/0.9 text format to XML representation - inline level elements
    @@lang:en
  @Main:
    my (undef, $source => $current, %opt) = @_;

  my $ElementDef = {
    ABBR    => {ln => 'abbr', ns_uri => $NS_XHTML2},
    CODE    => {ln => 'code', ns_uri => $NS_XHTML2},
    DEL     => {ln => 'del',  ns_uri => $NS_XHTML1},
    DFN     => {ln => 'dfn',  ns_uri => $NS_XHTML2},
    INS     => {ln => 'ins',  ns_uri => $NS_XHTML1},
    KBD     => {ln => 'kbd',  ns_uri => $NS_XHTML2},
    Q       => {ln => 'q',    ns_uri => $NS_XHTML1},
    RUBY    => {ln => 'ruby', ns_uri => $NS_XHTML2},
    RUBYB   => {ln => 'rubyb', ns_uri => $NS_SW09},
    SAMP    => {ln => 'samp', ns_uri => $NS_XHTML2},
    SUB     => {ln => 'sub',  ns_uri => $NS_XHTML2},
    SUP     => {ln => 'sup',  ns_uri => $NS_XHTML2},
    VAR     => {ln => 'var',  ns_uri => $NS_XHTML2},
    WEAK    => {ln => 'weak', ns_uri => $NS_SW09},
    anchor  => {ln => 'anchor', ns_uri => $NS_SW09, has_fragment_no => 1},
    del     => {has_cite => 1},
    ins     => {has_cite => 1},
    q       => {has_cite => 1},
    rb      => {ln => 'rb',   ns_uri => $NS_XHTML2, is_nested => 1},
    rt      => {ln => 'rt',   ns_uri => $NS_XHTML2, is_nested => 1},
  };

    if ($$source =~ /\G\[([0-9]+)\]/gc) {
      for ($current->append_new_node (type => '#element',
                                      namespace_uri => $NS_SW09,
                                      local_name => 'anchor-end')) {
        $_->set_attribute (anchor => 0+$1,
                           namespace_uri => $NS_SW09);
        $_->append_text ('['.$1.']');
      }
    }
    my $depth = 0;
    while (pos $$source < length $$source) {
      if ($$source =~ /\G\[\[(?=\#)/gc) {
        my $form = $current->append_new_node (type => '#element',
                                              namespace_uri => $NS_SW09,
                                              local_name => 'form');
        if ($$source =~ /\G$Reg_Form_Content_M\]\]/ogc) {
          $form->set_attribute (id => $1) if $1;
          my ($i, $t, $o) = ($2, $3, $4);
          s/\\(.)/$1/g for ($i, $t, $o);
          $form->set_attribute (input => $i);
          $form->set_attribute (template => $t);
          $form->set_attribute (option => $o);
        } elsif ($$source =~ /\G$Reg_Embed_Content_M\]\]/ogc) {
          $form->set_attribute (ref => $1);
          $form->set_attribute (id => $2) if $2;
          $form->set_attribute (parameter => $3) if defined $3;
        } else {
          ## TODO: error
          SuikaWiki::Plugin->module_package('Error')->report_error_simple ($opt{opt}->{o}->{wiki}, InvalidForm => substr ($$source, pos ($$source)));
        }
      } elsif ($$source =~ /\G\[(?>([A-Z]+)(?>\(((?>[^()\\]*)(?>(?>[^()\\]+|\\.)*))\))?)?\[/gc) {
        my $type = $1 || 'anchor';
        my $param = $2;
        my $def = $ElementDef->{ $type };
        unless ($def) {
          ## TODO: error
          $def = $ElementDef->{CODE};
        }
        $current = $current->append_new_node (type => '#element',
                                              namespace_uri => $def->{ns_uri},
                                              local_name => $def->{ln});
        $current->set_attribute (class => $param) if $param;
        if ($type eq 'RUBY' or $type eq 'RUBYB'
            or $type eq 'ABBR') {
          $current = $current->append_new_node 
                                 (type => '#element',
                                  namespace_uri => $ElementDef->{rb}->{ns_uri},
                                  local_name => $ElementDef->{rb}->{ln});
        }
        $depth++;
      } elsif ($$source =~ /\G\](?> <([0-9A-Za-z_+.%-]+):($Reg_URI_Opaque)>
 \                                | >>([0-9]+) )?
 \                            \]/gcox) {
        my ($scheme, $opaque, $anchor) = ($1, $2, $3);
        unless ($depth) {
          $current->append_text (substr ($$source, $-[0], $+[0]-$-[0]));
          next;
        }
        my $def = $ElementDef->{$current->local_name} || {};
        if (defined $anchor) {
          $current->set_attribute (anchor => $anchor + 0,
                                   namespace_uri => $NS_SW09);
        } elsif (defined $scheme) {
          if ($scheme =~ /[A-Z]/) {
            $current->set_attribute (resScheme => $scheme,
                                     namespace_uri => $NS_SW09);
            $current->set_attribute (resParameter => $opaque,
                                     namespace_uri => $NS_SW09);
          } else {
            $current->set_attribute (resScheme => 'URI',
                                     namespace_uri => $NS_SW09);
            $current->set_attribute (resParameter => "$scheme:$opaque",
                                     namespace_uri => $NS_SW09);
          }
        }
        $current = $current->parent_node;
        $current = $current->parent_node if $def->{is_nested};
        $depth--;
      } elsif ($$source =~ /\G\]\s*\[/gc) {
        if ($current->local_name eq 'rb' or $current->local_name eq 'rt') {
          $current = $current->parent_node
                             ->append_new_node
                                 (type => '#element',
                                  namespace_uri => $ElementDef->{rt}->{ns_uri},
                                  local_name => $ElementDef->{rt}->{ln});
        } else {
          $current->append_text (substr ($$source, $-[0], $+[0]-$-[0]-1));
          pos ($$source)--;
        }
      } elsif ($$source =~ /\G'''?/gc) {
        my $type = $+[0] - $-[0] == 3 ? 'strong' : 'em';
        if ($current->local_name eq $type) {
          $current = $current->parent_node;
        } else {
          $current = $current->append_new_node
                                 (type => '#element',
                                  namespace_uri => $NS_XHTML2,
                                  local_name => $type);
        }
      } elsif ($$source =~ /\G<([0-9A-Za-z_+.%-]+):($Reg_URI_Opaque)>/gco) {
        my ($scheme, $data) = ($1, $2);
        my $link = $current->append_new_node
                                 (type => '#element',
                                  namespace_uri => $NS_SW09,
                                  local_name => 'anchor-external');
        if (substr ($scheme, 0, 1) =~ /[A-Z]/) {
          $link->set_attribute (resScheme => $scheme,
                                namespace_uri => $NS_SW09);
          $link->set_attribute (resParameter => $data,
                                namespace_uri => $NS_SW09);
        } else { # URI Reference
          $link->set_attribute (resScheme => 'URI',
                                namespace_uri => $NS_SW09);
          $link->set_attribute (resParameter => $scheme.':'.$data,
                                namespace_uri => $NS_SW09);
        }
        $link->append_text ($scheme.':'.$data);
      } elsif ($$source =~ /\G__&&/gc) {
        if ($$source =~ /\G([^&]+)&&__/gc) {
          $current->append_new_node
                                 (type => '#element',
                                  namespace_uri => $NS_SW09,
                                  local_name => 'replace')
                  ->set_attribute (by => $1);
        } else {
          $current->append_text ('__&&');
        }
      } elsif ($$source =~ /\G((?>
                                  [^'\[\]<>_]+
                                | '   (?!')
                                | \[  (?!\[|[A-Z]+(?>\([^()\\]*
                                                       (?>[^()\\]+|\\.)*\))?\[)
                                | \]  (?! \]
                                        | >>[0-9]+\]
                                        | <[0-9A-Za-z_+.%-]+:$Reg_URI_Opaque>\]
                                        | \s*\[ )
                                | <   (?![0-9A-Za-z_+.%-]+:$Reg_URI_Opaque>)
                                | >   (?!>[0-9])
                                | _   (?!_&&)
                            )+)/oxgc) {
        $current->append_text ($1);
      } elsif ($$source =~ /\G>>([0-9]+)/gc) {
        for ($current->append_new_node (type => '#element',
                                        namespace_uri => $NS_SW09,
                                        local_name => 'anchor-internal')) {
          $_->set_attribute (anchor => 0+$1,
                             namespace_uri => $NS_SW09);
          $_->append_text ('>>'.$1);
        }
      } else {
        CORE::die "Implementation buggy: ", substr ($$source, pos $$source);
      }
    }

FormattingRule:
  @Category[list]:
    page-link
    link-to-resource
  @Name: sw09--link-anchor-content
  @Description:
    @@@:
      Output content of the anchor element
    @@lang:en
  @Formatting:
    if ($o->{var}->{sw09__anchor_content}) {
      $o->{var}->{sw09__anchor_content}->($p->{-parent});
    } else {
      $WIKIRESOURCE->append_tree
            (name => 'Link:SuikaWiki/0.9:link-anchor-content:InvalidContext',
             param => $o,
             -parent => $p->{-parent},
             wiki => $o->{wiki});
    }

Resource:
  @Link:SuikaWiki/0.9:link-anchor-content:InvalidContext:
    @@@: %percent;sw09--link-anchor-content; cannot be used in this context.
    @@lang:en
  @Link:SuikaWiki/0.9:toResource:SourceLabel:
    @@@:
      %select_link_resource_scheme (
        URI => {<%link-to-it(
          label=>{%link-resource-parameters;}p,
        );>},
        MAIL => {<%link-to-it(
          label => {%link-resource-parameters;}p,
          description
            => {%res (name=>{Link:MailAddress=});<%link-resource-parameters;>}p,
        );>},
        otherwise => {<%link-to-it(
          label => {%sw09--link-anchor-content;}p,
          description => {%res (name=>{Link:URIReference=});<%uri-reference;>}p,
        );>},
      );
    @@lang:en
  @Link:SuikaWiki/0.9:toWikiPage:SourceLabel:
    @@@:
      %link-to-it(
        label=>{%sw09--link-anchor-content;%if-linked-wikipage-exist(
          true=>{%if-link-has-dest-anchor-no(true=>{>>%link-dest-anchor-no;});},
          false=>{%res(name=>{Link:toWikiPage:NotExist:Mark});}
        );}p,
        description=>{%page-name(absolute);; %if-linked-wikipage-exist(
          true=>{%page-headline;},
          false=>{(%res(name=>{Link:toWikiPage:NotExist:Description});)},
        );}p,
        class=>{%if-linked-wikipage-exist(false=>{not-exist});}p,
      );
  @SuikaWiki/0.9:form:comment:input:
      %line (content => {%textarea (id=>msg,size=>20,lines=>3);}p);
      %line (content => {
        (%text (description => {%res (name => {Form:Description:HumanName});}p,
                id => name, size => 6); 
         [%text (description =>
                   {%res (name => {Form:Description:MailAddress});}p,
                 id => mail, size => 5);] 
         %check (default, id => record-date,
                 label => {%res (name => {Form:Label:LogDate});}p,
                 description => {%res (name => {Form:Description:LogDate});}p);) 
         %submit (label => {%res (name => {Form:Label:Add});}p,
                  description => {%res (name => {Form:Description:Add});}p);
         %we--update-lastmodified-datetime;
      }p);
  @SuikaWiki/0.9:form:comment:template:
    %n
   ;[%index;]%n
   ;%text(source=>msg);%n;(%name;%text(source=>mail,prefix=>" [",suffix=>"]");%iif(source=>record-date,true=>" [WEAK[%date;]]");)%n;
  @SuikaWiki/0.9:form:comment:option:
    %require (msg);
  @SuikaWiki/0.9:form:footannotate:input:
      %line (content => {%textarea (id=>msg,size=>20,lines=>3);}p);
      %line (content => {
        (%text (description => {%res (name => {Form:Description:HumanName});}p,
                id => name, size => 6); 
         [%text (description =>
                   {%res (name => {Form:Description:MailAddress});}p,
                 id => mail, size => 5);] 
         %check (default, id => record-date,
                 label => {%res (name => {Form:Label:LogDate});}p,
                 description => {%res (name => {Form:Description:LogDate});}p);) 
         %submit (label => {%res (name => {Form:Label:Add});}p,
                  description => {%res (name => {Form:Description:Add});}p);
         %we--update-lastmodified-datetime;
      }p);
  @SuikaWiki/0.9:form:footannotate:template:
     %n
    ;[%index;]%n
    ;%text(source=>msg);%n
    ;(%name;%text(source=>mail,prefix=>" [",suffix=>"]");%iif(source=>record-date,true=>" [WEAK[%date;]]");)%n;
  @SuikaWiki/0.9:form:footannotate:option:
    %require (msg);

Error:
  @Name: text_parse
  @Definition:
    @@INLINE_NO_CLOSE_TAG:
      @@@description:
        Close tag of element "%t (name => element_type);" not found.
      @@@level: non-fatal
    @@BLOCK_NO_CLOSE_TAG:
      @@@description:
        Close tag of element "%t (name => element_type);" not found.
      @@@level: non-fatal
    @@INVALID_FORM:
      @@@description:
        Invalid syntax of WikiForm
      @@@level: non-fatal
    
Error:
  @Name: xml_to_text
  @IsA[list]:
    ::SuikaWiki::Format::
  @Definition:
    @@