1 files changed, 125 insertions, 0 deletions
diff --git a/includes/libs/ReplacementArray.php b/includes/libs/ReplacementArray.php
new file mode 100644
index 00000000..7fdb3093
--- /dev/null
+++ b/includes/libs/ReplacementArray.php
@@ -0,0 +1,125 @@
+<?php
+/**
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License along
+ * with this program; if not, write to the Free Software Foundation, Inc.,
+ * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
+ * http://www.gnu.org/copyleft/gpl.html
+ *
+ * @file
+ */
+
+/**
+ * Replacement array for FSS with fallback to strtr()
+ * Supports lazy initialisation of FSS resource
+ */
+class ReplacementArray {
+	private $data = false;
+	private $fss = false;
+
+	/**
+	 * Create an object with the specified replacement array
+	 * The array should have the same form as the replacement array for strtr()
+	 * @param array $data
+	 */
+	public function __construct( $data = array() ) {
+		$this->data = $data;
+	}
+
+	/**
+	 * @return array
+	 */
+	public function __sleep() {
+		return array( 'data' );
+	}
+
+	public function __wakeup() {
+		$this->fss = false;
+	}
+
+	/**
+	 * Set the whole replacement array at once
+	 * @param array $data
+	 */
+	public function setArray( $data ) {
+		$this->data = $data;
+		$this->fss = false;
+	}
+
+	/**
+	 * @return array|bool
+	 */
+	public function getArray() {
+		return $this->data;
+	}
+
+	/**
+	 * Set an element of the replacement array
+	 * @param string $from
+	 * @param string $to
+	 */
+	public function setPair( $from, $to ) {
+		$this->data[$from] = $to;
+		$this->fss = false;
+	}
+
+	/**
+	 * @param array $data
+	 */
+	public function mergeArray( $data ) {
+		$this->data = array_merge( $this->data, $data );
+		$this->fss = false;
+	}
+
+	/**
+	 * @param ReplacementArray $other
+	 */
+	public function merge( ReplacementArray $other ) {
+		$this->data = array_merge( $this->data, $other->data );
+		$this->fss = false;
+	}
+
+	/**
+	 * @param string $from
+	 */
+	public function removePair( $from ) {
+		unset( $this->data[$from] );
+		$this->fss = false;
+	}
+
+	/**
+	 * @param array $data
+	 */
+	public function removeArray( $data ) {
+		foreach ( $data as $from => $to ) {
+			$this->removePair( $from );
+		}
+		$this->fss = false;
+	}
+
+	/**
+	 * @param string $subject
+	 * @return string
+	 */
+	public function replace( $subject ) {
+		if ( function_exists( 'fss_prep_replace' ) ) {
+			if ( $this->fss === false ) {
+				$this->fss = fss_prep_replace( $this->data );
+			}
+			$result = fss_exec_replace( $this->fss, $subject );
+		} else {
+			$result = strtr( $subject, $this->data );
+		}
+
+		return $result;
+	}
+}