100 Zeilen
3.4 KiB
PHP
100 Zeilen
3.4 KiB
PHP
<?php
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// {{{ license
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/* vim: set expandtab tabstop=4 shiftwidth=4 softtabstop=4 foldmethod=marker: */
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//
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// +----------------------------------------------------------------------+
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// | This library is free software; you can redistribute it and/or modify |
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// | it under the terms of the GNU Lesser General Public License as |
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// | published by the Free Software Foundation; either version 2.1 of the |
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// | License, or (at your option) any later version. |
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// | |
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// | This library is distributed in the hope that it will be useful, but |
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// | WITHOUT ANY WARRANTY; without even the implied warranty of |
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// | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
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// | Lesser General Public License for more details. |
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// | |
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// | You should have received a copy of the GNU Lesser General Public |
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// | License along with this library; if not, write to the Free Software |
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// | Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 |
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// | USA. |
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// +----------------------------------------------------------------------+
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//
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// }}}
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/**
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* Encode/decode Internationalized Domain Names.
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* Factory class to get correct implementation either for php4 or php5.
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*
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* @author Markus Nix <mnix@docuverse.de>
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* @author Matthias Sommerfeld <mso@phlylabs.de>
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* @package Net
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* @version $Id$
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*/
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class Net_IDNA
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{
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// {{{ factory
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/**
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* Attempts to return a concrete IDNA instance for either php4 or php5.
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*
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* @param array $params Set of paramaters
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* @return object IDNA The newly created concrete Log instance, or an
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* false on an error.
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* @access public
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*/
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function &getInstance($params = array())
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{
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$version = explode( '.', phpversion() );
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$handler = ((int)$version[0] > 4) ? 'php5' : 'php4';
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$class = 'Net_IDNA_' . $handler;
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$classfile = 'Net/IDNA/' . $handler . '.php';
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/*
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* Attempt to include our version of the named class, but don't treat
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* a failure as fatal. The caller may have already included their own
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* version of the named class.
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*/
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include_once $classfile;
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/* If the class exists, return a new instance of it. */
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if (class_exists($class)) {
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return new $class($params);
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}
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return false;
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}
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// }}}
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// {{{ singleton
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/**
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* Attempts to return a concrete IDNA instance for either php4 or php5,
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* only creating a new instance if no IDNA instance with the same
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* parameters currently exists.
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*
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* @param array $params Set of paramaters
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* @return object IDNA The newly created concrete Log instance, or an
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* false on an error.
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* @access public
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*/
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function &singleton($params = array())
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{
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static $instances;
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if (!isset($instances)) {
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$instances = array();
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}
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$signature = serialize($params);
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if (!isset($instances[$signature])) {
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$instances[$signature] = &Net_IDNA::factory($params);
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}
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return $instances[$signature];
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}
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// }}}
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}
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?>
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