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Diffstat (limited to 'lib/Zend/Filter/Alpha.php')
-rw-r--r-- | lib/Zend/Filter/Alpha.php | 115 |
1 files changed, 115 insertions, 0 deletions
diff --git a/lib/Zend/Filter/Alpha.php b/lib/Zend/Filter/Alpha.php new file mode 100644 index 0000000..adfaafe --- /dev/null +++ b/lib/Zend/Filter/Alpha.php @@ -0,0 +1,115 @@ +<?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: Alpha.php 12751 2008-11-21 18:30:48Z yoshida@zend.co.jp $ + */ + + +/** + * @see Zend_Filter_Interface + */ +require_once 'Zend/Filter/Interface.php'; +/** + * @see Zend_Locale + */ +require_once 'Zend/Locale.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_Alpha implements Zend_Filter_Interface +{ + /** + * Whether to allow white space characters; off by default + * + * @var boolean + */ + public $allowWhiteSpace; + + /** + * Is PCRE is compiled with UTF-8 and Unicode support + * + * @var mixed + **/ + protected static $_unicodeEnabled; + + /** + * Locale in browser. + * + * @var Zend_Locale object + */ + protected $_locale; + + /** + * The Alphabet means english alphabet. + * + * @var boolean + */ + protected static $_meansEnglishAlphabet; + + /** + * Sets default option values for this instance + * + * @param boolean $allowWhiteSpace + * @return void + */ + public function __construct($allowWhiteSpace = false) + { + $this->allowWhiteSpace = (boolean) $allowWhiteSpace; + if (null === self::$_unicodeEnabled) { + self::$_unicodeEnabled = (@preg_match('/\pL/u', 'a')) ? true : false; + } + + if (null === self::$_meansEnglishAlphabet) { + $this->_locale = new Zend_Locale('auto'); + self::$_meansEnglishAlphabet = in_array($this->_locale->getLanguage(), + array('ja', 'ko', 'zh') + ); + } + + } + + /** + * Defined by Zend_Filter_Interface + * + * Returns the string $value, removing all but alphabetic characters + * + * @param string $value + * @return string + */ + public function filter($value) + { + $whiteSpace = $this->allowWhiteSpace ? '\s' : ''; + if (!self::$_unicodeEnabled) { + // POSIX named classes are not supported, use alternative a-zA-Z match + $pattern = '/[^a-zA-Z' . $whiteSpace . ']/'; + } else if (self::$_meansEnglishAlphabet) { + //The Alphabet means english alphabet. + $pattern = '/[^a-zA-Z' . $whiteSpace . ']/u'; + } else { + //The Alphabet means each language's alphabet. + $pattern = '/[^\p{L}' . $whiteSpace . ']/u'; + } + + return preg_replace($pattern, '', (string) $value); + } +} |