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package XML::XOXO::Node; |
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use strict; |
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use Class::XPath 1.4 |
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get_name => 'name', |
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get_parent => 'parent', |
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get_root => 'root', |
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get_children => sub { $_[0]->contents ? @{ $_[0]->contents } : () }, |
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get_attr_names => sub { keys %{ $_[0]->attributes } }, |
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get_attr_value => sub { $_[0]->attributes->{ $_[1] } || '' }, |
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get_content => sub { $_[0]->attributes->{text} }; |
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sub new { |
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my $self = bless {}, $_[0]; |
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$self->{attributes} = {}; |
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$self->{contents} = []; |
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$self; |
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} |
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sub name { my $this = shift; $this->stash( 'name', @_ ); } |
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sub parent { my $this = shift; $this->stash( 'parent', @_ ); } |
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sub contents { my $this = shift; $this->stash( 'contents', @_ ); } |
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sub attributes { my $this = shift; $this->stash( 'attributes', @_ ); } |
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sub root { |
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my $e = shift; |
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while ( $e->can('parent') && $e->parent ) { $e = $e->parent } |
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$e; |
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} |
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sub stash { |
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$_[0]->{ $_[1] } = $_[2] if defined $_[2]; |
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$_[0]->{ $_[1] }; |
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} |
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#--- output |
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sub as_xml { |
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my $this = shift; |
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my $node = shift || $this; |
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die 'A node is required when invoking as_xml as a class method.' |
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unless ref($node); |
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my $name = $node->name; |
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my $a = \%{ $node->attributes }; # cloned. |
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my $children = $node->contents; |
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my $out = "<$name>\n"; |
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# special attributes |
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my $text = $a->{text} || $a->{title} || $a->{url}; |
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delete $a->{text}; |
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my $aa = ''; |
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if ( exists $a->{url} ) { |
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$a->{href} = $a->{url}; |
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delete $a->{url}; |
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} |
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map { $aa .= " $_=\"" . encode_xml( $a->{$_}, 1 ) . "\""; delete $a->{$_}; } |
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grep { exists $a->{$_} } qw( href title rel type ); |
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if ( length($aa) ) { |
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$text = encode_xml( $text, 1 ); |
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$out .= "$text\n"; |
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} |
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# extended (including multi-valued) attributes |
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my $cout = ''; |
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foreach ( sort keys %$a ) { |
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$cout .= '' . encode_xml($_) . "\n"; |
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$cout .= ''; |
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$cout .= |
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ref( $a->{$_} ) |
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? "\n" . $this->as_xml( $a->{$_} ) |
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: encode_xml( $a->{$_}, 1 ); |
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$cout .= "\n"; |
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} |
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$out .= "\n" . $cout . " \n" if length($cout); |
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# children elements |
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map { $out .= $this->as_xml($_) } @$children; |
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$out .= "$name>\n"; |
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$out; |
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} |
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my %Map = ( |
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'&' => '&', |
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'"' => '"', |
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'<' => '<', |
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'>' => '>', |
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'\'' => ''' |
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); |
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my $RE = join '|', keys %Map; |
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sub encode_xml { |
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my ( $str, $nocdata ) = @_; |
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return unless defined($str); |
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if ( |
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!$nocdata |
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&& $str =~ m/ |
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<[^>]+> ## HTML markup |
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| ## or |
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&(?:(?!(\#([0-9]+)|\#x([0-9a-fA-F]+))).*?); |
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## something that looks like an HTML entity. |
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/x |
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) { |
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## If ]]> exists in the string, encode the > to >. |
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$str =~ s/]]>/]]>/g; |
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$str = ''; |
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} else { |
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$str =~ s!($RE)!$Map{$1}!g; |
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} |
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$str; |
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} |
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*query = \&match; |
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1; |
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__END__ |