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93 lines
2.4 KiB
PHP
93 lines
2.4 KiB
PHP
<?php
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/**
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* Zend Framework
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*
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* LICENSE
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*
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* This source file is subject to the new BSD license that is bundled
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* with this package in the file LICENSE.txt.
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* It is also available through the world-wide-web at this URL:
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* http://framework.zend.com/license/new-bsd
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* If you did not receive a copy of the license and are unable to
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* obtain it through the world-wide-web, please send an email
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* to license@zend.com so we can send you a copy immediately.
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*
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* @category Zend
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* @package Zend_Mail
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* @copyright Copyright (c) 2005-2015 Zend Technologies USA Inc. (http://www.zend.com)
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* @license http://framework.zend.com/license/new-bsd New BSD License
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* @version $Id$
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*/
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/**
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* @category Zend
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* @package Zend_Mail
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* @copyright Copyright (c) 2005-2015 Zend Technologies USA Inc. (http://www.zend.com)
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* @license http://framework.zend.com/license/new-bsd New BSD License
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*/
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final class Zend_Mail_Header_HeaderName
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{
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/**
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* No public constructor.
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*/
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private function __construct()
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{
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}
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/**
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* Filter the header name according to RFC 2822
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*
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* @see http://www.rfc-base.org/txt/rfc-2822.txt (section 2.2)
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* @param string $name
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* @return string
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*/
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public static function filter($name)
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{
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$result = '';
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$tot = strlen($name);
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for ($i = 0; $i < $tot; $i += 1) {
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$ord = ord($name[$i]);
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if ($ord > 32 && $ord < 127 && $ord !== 58) {
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$result .= $name[$i];
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}
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}
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return $result;
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}
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/**
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* Determine if the header name contains any invalid characters.
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*
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* @param string $name
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* @return bool
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*/
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public static function isValid($name)
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{
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$tot = strlen($name);
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for ($i = 0; $i < $tot; $i += 1) {
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$ord = ord($name[$i]);
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if ($ord < 33 || $ord > 126 || $ord === 58) {
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return false;
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}
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}
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return true;
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}
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/**
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* Assert that the header name is valid.
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*
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* Raises an exception if invalid.
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*
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* @param string $name
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* @throws Exception\RuntimeException
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* @return void
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*/
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public static function assertValid($name)
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{
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if (! self::isValid($name)) {
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require_once 'Zend/Mail/Exception.php';
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throw new Zend_Mail_Exception('Invalid header name detected');
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}
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}
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}
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