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91 lines
1.8 KiB
91 lines
1.8 KiB
9 months ago
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<?php
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/**
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* WP_MatchesMapRegex helper class
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*
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* @package WordPress
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* @since 4.7.0
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*/
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/**
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* Helper class to remove the need to use eval to replace $matches[] in query strings.
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*
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* @since 2.9.0
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*/
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#[AllowDynamicProperties]
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class WP_MatchesMapRegex {
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/**
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* store for matches
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*
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* @var array
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*/
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private $_matches;
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/**
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* store for mapping result
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*
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* @var string
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*/
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public $output;
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/**
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* subject to perform mapping on (query string containing $matches[] references
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*
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* @var string
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*/
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private $_subject;
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/**
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* regexp pattern to match $matches[] references
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*
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* @var string
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*/
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public $_pattern = '(\$matches\[[1-9]+[0-9]*\])'; // Magic number.
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/**
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* constructor
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*
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* @param string $subject subject if regex
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* @param array $matches data to use in map
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*/
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public function __construct( $subject, $matches ) {
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$this->_subject = $subject;
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$this->_matches = $matches;
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$this->output = $this->_map();
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}
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/**
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* Substitute substring matches in subject.
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*
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* static helper function to ease use
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*
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* @param string $subject subject
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* @param array $matches data used for substitution
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* @return string
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*/
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public static function apply( $subject, $matches ) {
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$result = new WP_MatchesMapRegex( $subject, $matches );
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return $result->output;
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}
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/**
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* do the actual mapping
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*
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* @return string
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*/
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private function _map() {
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$callback = array( $this, 'callback' );
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return preg_replace_callback( $this->_pattern, $callback, $this->_subject );
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}
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/**
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* preg_replace_callback hook
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*
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* @param array $matches preg_replace regexp matches
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* @return string
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*/
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public function callback( $matches ) {
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$index = (int) substr( $matches[0], 9, -1 );
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return ( isset( $this->_matches[ $index ] ) ? urlencode( $this->_matches[ $index ] ) : '' );
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}
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}
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