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+<?php
+
+/**
+ * Zend Framework
+ *
+ * LICENSE
+ *
+ * This source file is subject to the new BSD license that is bundled
+ * with this package in the file LICENSE.txt.
+ * It is also available through the world-wide-web at this URL:
+ * http://framework.zend.com/license/new-bsd
+ * If you did not receive a copy of the license and are unable to
+ * obtain it through the world-wide-web, please send an email
+ * to license@zend.com so we can send you a copy immediately.
+ *
+ * @category Zend
+ * @package Zend_Filter
+ * @copyright Copyright (c) 2005-2008 Zend Technologies USA Inc. (http://www.zend.com)
+ * @license http://framework.zend.com/license/new-bsd New BSD License
+ * @version $Id: StringTrim.php 8064 2008-02-16 10:58:39Z thomas $
+ */
+
+
+/**
+ * @see Zend_Filter_Interface
+ */
+require_once 'Zend/Filter/Interface.php';
+
+
+/**
+ * @category Zend
+ * @package Zend_Filter
+ * @copyright Copyright (c) 2005-2008 Zend Technologies USA Inc. (http://www.zend.com)
+ * @license http://framework.zend.com/license/new-bsd New BSD License
+ */
+class Zend_Filter_StringTrim implements Zend_Filter_Interface
+{
+ /**
+ * List of characters provided to the trim() function
+ *
+ * If this is null, then trim() is called with no specific character list,
+ * and its default behavior will be invoked, trimming whitespace.
+ *
+ * @var string|null
+ */
+ protected $_charList;
+
+ /**
+ * Sets filter options
+ *
+ * @param string $charList
+ * @return void
+ */
+ public function __construct($charList = null)
+ {
+ $this->_charList = $charList;
+ }
+
+ /**
+ * Returns the charList option
+ *
+ * @return string|null
+ */
+ public function getCharList()
+ {
+ return $this->_charList;
+ }
+
+ /**
+ * Sets the charList option
+ *
+ * @param string|null $charList
+ * @return Zend_Filter_StringTrim Provides a fluent interface
+ */
+ public function setCharList($charList)
+ {
+ $this->_charList = $charList;
+ return $this;
+ }
+
+ /**
+ * Defined by Zend_Filter_Interface
+ *
+ * Returns the string $value with characters stripped from the beginning and end
+ *
+ * @param string $value
+ * @return string
+ */
+ public function filter($value)
+ {
+ if (null === $this->_charList) {
+ return trim((string) $value);
+ } else {
+ return trim((string) $value, $this->_charList);
+ }
+ }
+}