Wordpress 2.9.2-scripts

[autoinstalls/wordpress.git] / wp-includes / classes.php

diff --git a/wp-includes/classes.php b/wp-includes/classes.php
index 29c37535a7cd6e2142932e59f927885ca3bcd425..d290bbaa5b68e5a1223bb34e7a453da127b09def 100644 (file)
--- a/wp-includes/classes.php
+++ b/wp-includes/classes.php
@@ -216,7 +216,7 @@ class WP {
                                        $query = preg_replace("!^.+\?!", '', $query);
 
                                        // Substitute the substring matches into the query.
-                                       eval("@\$query = \"" . addslashes($query) . "\";");
+                                       $query = addslashes(WP_MatchesMapRegex::apply($query, $matches));
 
                                        $this->matched_query = $query;
 
@@ -1592,4 +1592,94 @@ class WP_Ajax_Response {
        }
 }
 
+/**
+ * Helper class to remove the need to use eval to replace $matches[] in query strings.
+ *
+ * @since 2.9.0
+ */
+class WP_MatchesMapRegex {
+       /**
+        * store for matches
+        *
+        * @access private
+        * @var array
+        */
+       var $_matches;
+
+       /**
+        * store for mapping result
+        *
+        * @access public
+        * @var string
+        */
+       var $output;
+
+       /**
+        * subject to perform mapping on (query string containing $matches[] references
+        *
+        * @access private
+        * @var string
+        */
+       var $_subject;
+
+       /**
+        * regexp pattern to match $matches[] references
+        *
+        * @var string
+        */
+       var $_pattern = '(\$matches\[[1-9]+[0-9]*\])'; // magic number
+
+       /**
+        * constructor
+        *
+        * @param string $subject subject if regex
+        * @param array  $matches data to use in map
+        * @return self
+        */
+       function WP_MatchesMapRegex($subject, $matches) {
+               $this->_subject = $subject;
+               $this->_matches = $matches;
+               $this->output = $this->_map();
+       }
+
+       /**
+        * Substitute substring matches in subject.
+        *
+        * static helper function to ease use
+        *
+        * @access public
+        * @param string $subject subject
+        * @param array  $matches data used for subsitution
+        * @return string
+        */
+       function apply($subject, $matches) {
+               $oSelf =& new WP_MatchesMapRegex($subject, $matches);
+               return $oSelf->output;
+       }
+
+       /**
+        * do the actual mapping
+        *
+        * @access private
+        * @return string
+        */
+       function _map() {
+               $callback = array(&$this, 'callback');
+               return preg_replace_callback($this->_pattern, $callback, $this->_subject);
+       }
+
+       /**
+        * preg_replace_callback hook
+        *
+        * @access public
+        * @param  array $matches preg_replace regexp matches
+        * @return string
+        */
+       function callback($matches) {
+               $index = intval(substr($matches[0], 9, -1));
+               return ( isset( $this->_matches[$index] ) ? $this->_matches[$index] : '' );
+       }
+
+}
+
 ?>