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package XML::XPath::Node;

$VERSION = '1.44';

use strict; use warnings;
use vars qw(@ISA @EXPORT $AUTOLOAD %EXPORT_TAGS @EXPORT_OK);
use Exporter;
use Carp;
@ISA = ('Exporter');

sub UNKNOWN_NODE () {0;}
sub ELEMENT_NODE () {1;}
sub ATTRIBUTE_NODE () {2;}
sub TEXT_NODE () {3;}
sub CDATA_SECTION_NODE () {4;}
sub ENTITY_REFERENCE_NODE () {5;}
sub ENTITY_NODE () {6;}
sub PROCESSING_INSTRUCTION_NODE () {7;}
sub COMMENT_NODE () {8;}
sub DOCUMENT_NODE () {9;}
sub DOCUMENT_TYPE_NODE () {10;}
sub DOCUMENT_FRAGMENT_NODE () {11;}
sub NOTATION_NODE () {12;}

# Non core DOM stuff
sub ELEMENT_DECL_NODE () {13;}
sub ATT_DEF_NODE () {14;}
sub XML_DECL_NODE () {15;}
sub ATTLIST_DECL_NODE () {16;}
sub NAMESPACE_NODE () {17;}

# per-node constants

# All
sub node_parent () { 0; }
sub node_pos () { 1; }
sub node_global_pos () { 2; }

# Element
sub node_prefix () { 3; }
sub node_children () { 4; }
sub node_name () { 5; }
sub node_attribs () { 6; }
sub node_namespaces () { 7; }
sub node_ids () { 8; }

# Char
sub node_text () { 3; }

# PI
sub node_target () { 3; }
sub node_data () { 4; }

# Comment
sub node_comment () { 3; }

# Attribute
# sub node_prefix () { 3; }
sub node_key () { 4; }
sub node_value () { 5; }

# Namespaces
# sub node_prefix () { 3; }
sub node_expanded () { 4; }

@EXPORT = qw(
    UNKNOWN_NODE
    ELEMENT_NODE
    ATTRIBUTE_NODE
    TEXT_NODE
    CDATA_SECTION_NODE
    ENTITY_REFERENCE_NODE
    ENTITY_NODE
    PROCESSING_INSTRUCTION_NODE
    COMMENT_NODE
    DOCUMENT_NODE
    DOCUMENT_TYPE_NODE
    DOCUMENT_FRAGMENT_NODE
    NOTATION_NODE
    ELEMENT_DECL_NODE
    ATT_DEF_NODE
    XML_DECL_NODE
    ATTLIST_DECL_NODE
    NAMESPACE_NODE
    );

@EXPORT_OK = qw(
            node_parent
            node_pos
            node_global_pos
            node_prefix
            node_children
            node_name
            node_attribs
            node_namespaces
            node_text
            node_target
            node_data
            node_comment
            node_key
            node_value
            node_expanded
                        node_ids
        );

%EXPORT_TAGS = (
    'node_keys' => [
        qw(
            node_parent
            node_pos
            node_global_pos
            node_prefix
            node_children
            node_name
            node_attribs
            node_namespaces
            node_text
            node_target
            node_data
            node_comment
            node_key
            node_value
            node_expanded
                        node_ids
        ), @EXPORT,
    ],
);

my $global_pos = 0;

sub nextPos {
    my $class = shift;
    return $global_pos += 5;
}

sub resetPos {
    $global_pos = 0;
}

my %DecodeDefaultEntity =
(
 '"' => "&quot;",
 ">" => "&gt;",
 "<" => "&lt;",
 "'" => "&apos;",
 "&" => "&amp;"
);

sub XMLescape {
    my ($str, $default) = @_;
    return undef unless defined $str;
    $default ||= '';

if ($XML::XPath::EncodeUtf8AsEntity) {
        $str =~ s/([\xC0-\xDF].|[\xE0-\xEF]..|[\xF0-\xFF]...)|([$default])|(]]>)/
        defined($1) ? XmlUtf8Decode ($1) :
        defined ($2) ? $DecodeDefaultEntity{$2} : "]]&gt;" /egsx;
    }
    else {
        $str =~ s/([$default])|(]]>)/
        defined ($1) ? $DecodeDefaultEntity{$1} : ']]&gt;' /gsex;
    }

#?? could there be references that should not be expanded?
# e.g. should not replace &#nn; &#xAF; and &abc;
#    $str =~ s/&(?!($ReName|#[0-9]+|#x[0-9a-fA-F]+);)/&amp;/go;

$str;
}

#
# Opposite of XmlUtf8Decode plus it adds prefix "&#" or "&#x" and suffix ";"
# The 2nd parameter ($hex) indicates whether the result is hex encoded or not.
#
sub XmlUtf8Decode
{
    my ($str, $hex) = @_;
    my $len = length ($str);
    my $n;

if ($len == 2) {
        my @n = unpack "C2", $str;
        $n = (($n[0] & 0x3f) << 6) + ($n[1] & 0x3f);
    }
    elsif ($len == 3) {
        my @n = unpack "C3", $str;
        $n = (($n[0] & 0x1f) << 12) + (($n[1] & 0x3f) << 6) +
            ($n[2] & 0x3f);
    }
    elsif ($len == 4) {
        my @n = unpack "C4", $str;
        $n = (($n[0] & 0x0f) << 18) + (($n[1] & 0x3f) << 12) +
            (($n[2] & 0x3f) << 6) + ($n[3] & 0x3f);
    }
    elsif ($len == 1) {    # just to be complete...
        $n = ord ($str);
    }
    else {
        die "bad value [$str] for XmlUtf8Decode";
    }
    $hex ? sprintf ("&#x%x;", $n) : "&#$n;";
}

sub new {
    my $class = shift;
    no strict 'refs';
    my $impl = $class . "Impl";
    my $this = $impl->new(@_);
    if ($XML::XPath::SafeMode) {
        return $this;
    }
    my $self = \$this;
    return bless $self, $class;
}

sub AUTOLOAD {
    my $method = $AUTOLOAD;
    $method =~ s/.*:://;
#    warn "AUTOLOAD $method!\n";
    no strict 'refs';
    *{$AUTOLOAD} = sub {
        my $self = shift;
        my $olderror = $@; # store previous exceptions
        my $obj = eval { $$self };
        if ($@) {
            if ($@ =~ /Not a SCALAR reference/) {
                croak("No such method $method in " . ref($self));
            }
            croak $@;
        }
        if ($obj) {
            # make sure $@ propagates if this method call was the result
            # of losing scope because of a die().
            if ($method =~ /^(DESTROY|del_parent_link)$/) {
                $obj->$method(@_);
                $@ = $olderror if $olderror;
                return;
            }
            return $obj->$method(@_);
        }
    };
    goto &$AUTOLOAD;
}

package XML::XPath::NodeImpl;

use vars qw/@ISA $AUTOLOAD/;
@ISA = ('XML::XPath::Node');

sub new {
    die "Virtual base method";
}

sub getNodeType {
    my $self = shift;
    return XML::XPath::Node::UNKNOWN_NODE;
}

sub isElementNode {}
sub isAttributeNode {}
sub isNamespaceNode {}
sub isTextNode {}
sub isProcessingInstructionNode {}
sub isPINode {}
sub isCommentNode {}

sub getNodeValue {
    return;
}

sub getValue {
    shift->getNodeValue(@_);
}

sub setNodeValue {
    return;
}

sub setValue {
    shift->setNodeValue(@_);
}

sub getParentNode {
    my $self = shift;
    return $self->[XML::XPath::Node::node_parent];
}

sub getRootNode {
    my $self = shift;
    while (my $parent = $self->getParentNode) {
        $self = $parent;
    }
    return $self;
}

sub getElementById {
    my $self = shift;
    my ($id) = @_;
#    warn "getElementById: $id\n";
    my $root = $self->getRootNode;
    my $node = $root->[XML::XPath::Node::node_ids]{$id};
#    warn "returning node: ", $node->getName, "\n";
    return $node;
}

sub getName { }
sub getData { }

sub getChildNodes {
    return wantarray ? () : [];
}

sub getChildNode {
    return;
}

sub getAttribute {
    return;
}

sub getAttributes {
    return wantarray ? () : [];
}

sub getAttributeNodes {
    shift->getAttributes(@_);
}

sub getNamespaceNodes {
    return wantarray ? () : [];
}

sub getNamespace {
    return;
}

sub getLocalName {
    return;
}

sub string_value { return; }

sub get_pos {
    my $self = shift;
    return $self->[XML::XPath::Node::node_pos];
}

sub set_pos {
    my $self = shift;
    $self->[XML::XPath::Node::node_pos] = shift;
}

sub get_global_pos {
    my $self = shift;
    return $self->[XML::XPath::Node::node_global_pos];
}

sub set_global_pos {
    my $self = shift;
    $self->[XML::XPath::Node::node_global_pos] = shift;
}

sub renumber {
    my $self = shift;
    my $search = shift;
    my $diff = shift;

foreach my $node ($self->findnodes($search)) {
        $node->set_global_pos(
                $node->get_global_pos + $diff
                );
    }
}

sub insertAfter {
    my $self = shift;
    my $newnode = shift;
    my $posnode = shift;

my $pos_number = eval { $posnode->[XML::XPath::Node::node_children][-1]->get_global_pos() + 1; };
    if (!defined $pos_number) {
        $pos_number = $posnode->get_global_pos() + 1;
    }

eval {
        if ($pos_number ==
                $posnode->findnodes(
                    'following::node()'
                    )->get_node(1)->get_global_pos()) {
            $posnode->renumber('following::node()', +5);
        }
    };

my $pos = $posnode->get_pos;

$newnode->setParentNode($self);
    splice @{$self->[XML::XPath::Node::node_children]}, $pos + 1, 0, $newnode;

for (my $i = $pos + 1; $i < @{$self->[XML::XPath::Node::node_children]}; $i++) {
        $self->[XML::XPath::Node::node_children][$i]->set_pos($i);
    }

$newnode->set_global_pos($pos_number);
}

sub insertBefore {
    my $self = shift;
    my $newnode = shift;
    my $posnode = shift;

my $pos_number = ($posnode->getPreviousSibling() || $posnode->getParentNode)->get_global_pos();
    if ($pos_number == $posnode->get_global_pos()) {
        $posnode->renumber('self::node() | descendant::node() | following::node()', +5);
    }

my $pos = $posnode->get_pos;

$newnode->setParentNode($self);
    splice @{$self->[XML::XPath::Node::node_children]}, $pos, 0, $newnode;

for (my $i = $pos; $i < @{$self->[XML::XPath::Node::node_children]}; $i++) {
        $self->[XML::XPath::Node::node_children][$i]->set_pos($i);
    }

$newnode->set_global_pos($pos_number);
}

sub getPreviousSibling {
    my $self = shift;
    my $pos = $self->[XML::XPath::Node::node_pos];
    return unless $self->[XML::XPath::Node::node_parent];
    return $self->[XML::XPath::Node::node_parent]->getChildNode($pos);
}

sub getNextSibling {
    my $self = shift;
    my $pos = $self->[XML::XPath::Node::node_pos];
    return unless $self->[XML::XPath::Node::node_parent];
    return $self->[XML::XPath::Node::node_parent]->getChildNode($pos + 2);
}

sub setParentNode {
    my $self = shift;
    my $parent = shift;
#    warn "SetParent of ", ref($self), " to ", $parent->[XML::XPath::Node::node_name], "\n";
    $self->[XML::XPath::Node::node_parent] = $parent;
}

sub del_parent_link {
    my $self = shift;
    $self->[XML::XPath::Node::node_parent] = undef;
}

sub dispose {
    my $self = shift;
    foreach my $kid ($self->getChildNodes) {
        $kid->dispose;
    }
    foreach my $kid ($self->getAttributeNodes) {
        $kid->dispose;
    }
    foreach my $kid ($self->getNamespaceNodes) {
        $kid->dispose;
    }
    $self->[XML::XPath::Node::node_parent] = undef;
}

sub to_number {
    my $num = shift->string_value;
    return XML::XPath::Number->new($num);
}

sub find {
    my $node = shift;
    my ($path) = @_;
    my $xp = XML::XPath->new(); # new is v. lightweight
    return $xp->find($path, $node);
}

sub findvalue {
    my $node = shift;
    my ($path) = @_;
    my $xp = XML::XPath->new();
    return $xp->findvalue($path, $node);
}

sub findnodes {
    my $node = shift;
    my ($path) = @_;
    my $xp = XML::XPath->new();
    return $xp->findnodes($path, $node);
}

sub matches {
    my $node = shift;
    my ($path, $context) = @_;
    my $xp = XML::XPath->new();
    return $xp->matches($node, $path, $context);
}

sub to_sax {
    my $self = shift;
    unshift @_, 'Handler' if @_ == 1;
    my %handlers = @_;

my $doch = $handlers{DocumentHandler} || $handlers{Handler};
    my $dtdh = $handlers{DTDHandler} || $handlers{Handler};
    my $enth = $handlers{EntityResolver} || $handlers{Handler};

$self->_to_sax ($doch, $dtdh, $enth);
}

sub DESTROY {}

use Carp;

sub _to_sax {
    carp "_to_sax not implemented in ", ref($_[0]);
}

1;
__END__

=head1 NAME

XML::XPath::Node - internal representation of a node

=head1 API

The Node API aims to emulate DOM to some extent, however the API
isn't quite compatible with DOM. This is to ease transition from
XML::DOM programming to XML::XPath. Compatibility with DOM may
arise once XML::DOM gets namespace support.

=head2 new

Creates a new node. See the sub-classes for parameters to pass to new().

=head2 getNodeType

Returns one of ELEMENT_NODE, TEXT_NODE, COMMENT_NODE, ATTRIBUTE_NODE,
PROCESSING_INSTRUCTION_NODE or NAMESPACE_NODE. UNKNOWN_NODE is returned
if the sub-class doesn't implement getNodeType - but that means
something is broken! The constants are exported by default from
XML::XPath::Node. The constants have the same numeric value as the
XML::DOM versions.

=head2 getParentNode

Returns the parent of this node, or undef if this is the root node. Note
that the root node is the root node in terms of XPath - not the root
element node.

=head2 to_sax ( $handler | %handlers )

Generates sax calls to the handler or handlers. See the PerlSAX docs for
details (not yet implemented correctly).

=head1 MORE INFO

See the sub-classes for the meaning of the rest of the API:

=over 4

=item *

L<XML::XPath::Node::Element>

=item *

L<XML::XPath::Node::Attribute>

=item *

L<XML::XPath::Node::Namespace>

=item *

L<XML::XPath::Node::Text>

=item *

L<XML::XPath::Node::Comment>

=item *

L<XML::XPath::Node::PI>

=back

=cut

Deprecated: version_compare(): Passing null to parameter #1 ($version1) of type string is deprecated in /home3/homscoke/public_html/wp-includes/load.php on line 159

Warning: require(/home3/homscoke/public_html/wp-includes/html-api/class-wp-html-doctype-info.php): Failed to open stream: No such file or directory in /home3/homscoke/public_html/wp-settings.php on line 258

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Fatal error: Uncaught Error: Failed opening required '/home3/homscoke/public_html/wp-includes/html-api/class-wp-html-doctype-info.php' (include_path='.:/opt/cpanel/ea-php83/root/usr/share/pear') in /home3/homscoke/public_html/wp-settings.php:258 Stack trace: #0 /home3/homscoke/public_html/wp-config.php(102): require_once() #1 /home3/homscoke/public_html/wp-load.php(50): require_once('/home3/homscoke...') #2 /home3/homscoke/public_html/wp-blog-header.php(13): require_once('/home3/homscoke...') #3 /home3/homscoke/public_html/index.php(20): require('/home3/homscoke...') #4 {main} thrown in /home3/homscoke/public_html/wp-settings.php on line 258

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