XMLProcessor: Support namespaces

components/DataLiberation/EntityReader/EPubEntityReader.php

@@ -161,13 +161,13 @@ private function parse_manifest() {
 		);
 		while ( $xml->next_tag() ) {
 			$parsed_entry = array();
-			$keys         = $xml->get_attribute_names_with_prefix( '' );
+			$keys         = $xml->get_attribute_qualified_names_with_prefix( '' );
 			foreach ( $keys as $key ) {
 				$parsed_entry[ $key ] = $xml->get_attribute( $key );
 			}
 			if ( $xml->matches_breadcrumbs( array( 'metadata', '*' ) ) ) {
 				$parsed['metadata'][] = array(
-					'tag'        => $xml->get_tag(),
+					'tag'        => $xml->get_tag_local_name(),
 					'attributes' => $parsed_entry,
 				);
 			} elseif ( $xml->matches_breadcrumbs( array( 'manifest', 'item' ) ) ) {

components/DataLiberation/EntityReader/WXREntityReader.php

@@ -659,7 +659,7 @@ private function read_next_entity() {
 				$this->last_xml_cursor_outside_of_entity      = $this->xml->get_reentrancy_cursor();
 			}
 
-			$tag = $this->xml->get_tag();
+			$tag = $this->xml->get_tag_local_name();
 			/**
 			 * Custom adjustment: the Accessibility WXR file uses a non-standard
 			 * wp:wp_author tag.
@@ -732,7 +732,7 @@ private function read_next_entity() {
 			 */
 			if ( $this->xml->is_tag_opener() ) {
 				$this->last_opener_attributes = array();
-				$names                        = $this->xml->get_attribute_names_with_prefix( '' );
+				$names                        = $this->xml->get_attribute_qualified_names_with_prefix( '' );
 				foreach ( $names as $name ) {
 					$this->last_opener_attributes[ $name ] = $this->xml->get_attribute( $name );
 				}
@@ -741,7 +741,7 @@ private function read_next_entity() {
 				$is_site_option_opener = (
 					count( $this->xml->get_breadcrumbs() ) === 3 &&
 					$this->xml->matches_breadcrumbs( array( 'rss', 'channel', '*' ) ) &&
-					array_key_exists( $this->xml->get_tag(), static::KNOWN_SITE_OPTIONS )
+					array_key_exists( $this->xml->get_tag_local_name(), static::KNOWN_SITE_OPTIONS )
 				);
 				if ( $is_site_option_opener ) {
 					$this->last_xml_byte_offset_outside_of_entity = $this->xml->get_token_byte_offset_in_the_input_stream();
@@ -848,13 +848,13 @@ private function read_next_entity() {
 	 * @return bool Whether a site_option entity was emitted.
 	 */
 	private function parse_site_option() {
-		if ( ! array_key_exists( $this->xml->get_tag(), static::KNOWN_SITE_OPTIONS ) ) {
+		if ( ! array_key_exists( $this->xml->get_tag_local_name(), static::KNOWN_SITE_OPTIONS ) ) {
 			return false;
 		}
 
 		$this->entity_type = 'site_option';
 		$this->entity_data = array(
-			'option_name'  => static::KNOWN_SITE_OPTIONS[ $this->xml->get_tag() ],
+			'option_name'  => static::KNOWN_SITE_OPTIONS[ $this->xml->get_tag_local_name() ],
 			'option_value' => $this->text_buffer,
 		);
 		$this->emit_entity();

components/XML/XMLAttributeToken.php

@@ -0,0 +1,115 @@
+<?php
+namespace WordPress\XML;
+
+/**
+ * XML API: XMLAttributeToken class
+ *
+ * @package WordPress
+ * @subpackage XML-API
+ * @since 6.2.0
+ */
+
+/**
+ * Core class used by the XML tag processor as a data structure for the attribute token,
+ * allowing to drastically improve performance.
+ *
+ * This class is for internal usage of the XMLProcessor class.
+ *
+ * @see XMLProcessor
+ */
+class XMLAttributeToken {
+	/**
+	 * Attribute name.
+	 *
+	 * @since 6.2.0
+	 *
+	 * @var string
+	 */
+	public $qualified_name;
+
+	/**
+	 * Attribute value.
+	 *
+	 * @since 6.2.0
+	 *
+	 * @var int
+	 */
+	public $value_starts_at;
+
+	/**
+	 * How many bytes the value occupies in the input XML.
+	 *
+	 * @since 6.2.0
+	 *
+	 * @var int
+	 */
+	public $value_length;
+
+	/**
+	 * The string offset where the attribute name starts.
+	 *
+	 * @since 6.2.0
+	 *
+	 * @var int
+	 */
+	public $start;
+
+	/**
+	 * Byte length of text spanning the attribute inside a tag.
+	 *
+	 * This span starts at the first character of the attribute name
+	 * and it ends after one of three cases:
+	 *
+	 *  - at the end of the attribute name for boolean attributes.
+	 *  - at the end of the value for unquoted attributes.
+	 *  - at the final single or double quote for quoted attributes.
+	 *
+	 * @var int
+	 */
+	public $length;
+
+	/**
+	 * Namespace prefix.
+	 *
+	 * @var string
+	 */
+	public $namespace_prefix;
+
+	/**
+	 * Local name.
+	 *
+	 * @var string
+	 */
+	public $local_name;
+
+	/**
+	 * Namespace.
+	 *
+	 * @var string
+	 */
+	public $namespace;
+
+	/**
+	 * Constructor.
+	 *
+	 * @param  string  $name  Attribute name.
+	 * @param  int  $value_start  Attribute value.
+	 * @param  int  $value_length  Number of bytes attribute value spans.
+	 * @param  int  $start  The string offset where the attribute name starts.
+	 * @param  int  $length  Byte length of the entire attribute name or name and value pair expression.
+	 * @param  string  $namespace_prefix  Namespace prefix.
+	 * @param  string  $local_name  Local name.
+	 * @param  string  $namespace  Namespace.
+	 *
+	 */
+	public function __construct( $value_start, $value_length, $start, $length, $namespace_prefix=null, $local_name=null, $namespace=null ) {
+		$this->value_starts_at = $value_start;
+		$this->value_length    = $value_length;
+		$this->start           = $start;
+		$this->length          = $length;
+		$this->namespace_prefix = $namespace_prefix;
+		$this->local_name      = $local_name;
+		$this->namespace       = $namespace;
+		$this->qualified_name  = $namespace_prefix ? $namespace_prefix . ':' . $local_name : $local_name;
+	}
+}

components/XML/XMLElement.php

@@ -0,0 +1,76 @@
+<?php
+namespace WordPress\XML;
+
+/**
+ * XML API: XMLElement class
+ *
+ * @package WordPress
+ * @subpackage XML-API
+ * @since 6.2.0
+ */
+
+/**
+ * Core class used by the XML tag processor as a data structure for the attribute token,
+ * allowing to drastically improve performance.
+ *
+ * This class is for internal usage of the XMLProcessor class.
+ *
+ * @see XMLProcessor
+ */
+class XMLElement {
+	/**
+	 * Local name.
+	 *
+	 * @var string
+	 */
+	public $local_name;
+
+	/**
+	 * Namespace Prefix.
+	 *
+	 * @var string
+	 */
+	public $namespace_prefix;
+
+	/**
+	 * Full XML namespace name.
+	 *
+	 * @var string
+	 */
+	public $namespace;
+
+	/**
+	 * Namespaces in current element's scope.
+	 *
+	 * @var array<string, string>
+	 */
+	public $namespaces_in_scope;
+
+	/**
+	 * Qualified name.
+	 *
+	 * @var string
+	 */
+	public $qualified_name;
+
+	/**
+	 * Constructor.
+	 *
+	 * @param string $local_name Local name.
+	 * @param string $namespace_prefix Namespace prefix.
+	 * @param string $namespace Full XML namespace name.
+	 * @param array<string, string> $namespaces_in_scope Namespaces in current element's scope.
+	 */
+	public function __construct( $local_name, $namespace_prefix, $namespace, $namespaces_in_scope ) {
+		$this->local_name = $local_name;
+		$this->namespace_prefix = $namespace_prefix;
+		$this->namespace = $namespace;
+		$this->namespaces_in_scope = $namespaces_in_scope;
+		$this->qualified_name = $namespace_prefix ? $namespace_prefix . ':' . $local_name : $local_name;
+	}
+
+	public function get_full_name() {
+		return $this->namespace ? '{' . $this->namespace . '}' . $this->local_name : $this->local_name;
+	}
+
+}