68 lines
1.7 KiB
PHP
68 lines
1.7 KiB
PHP
<?php
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/**
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* Stream filter class to remove null (\0) values.
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*
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* Usage:
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* stream_filter_register('horde_null', 'Horde_Stream_Filter_Null');
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* stream_filter_[app|pre]pend($stream, 'horde_null',
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* [ STREAM_FILTER_[READ|WRITE|ALL] ],
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* [ $params ]);
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*
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* $params is an array that can contain the following:
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* - replace: (string) The string to use to replace null characters with.
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* DEFAULT: ''
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*
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* Copyright 2012-2016 Horde LLC (http://www.horde.org/)
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*
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* See the enclosed file COPYING for license information (LGPL). If you
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* did not receive this file, see http://www.horde.org/licenses/lgpl21.
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*
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* @author Michael J Rubinsky <mrubinsk@horde.org>
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* @category Horde
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* @license http://www.horde.org/licenses/lgpl21 LGPL 2.1
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* @package Stream_Filter
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*/
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class Horde_Stream_Filter_Null extends php_user_filter
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{
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/**
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* Search array.
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*
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* @var mixed
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*/
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protected $_search = "\0";
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/**
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* Replacement data
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*
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* @var mixed
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*/
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protected $_replace;
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/**
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* @see stream_filter_register()
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*/
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public function onCreate()
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{
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$this->_replace = isset($this->params->replace)
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? $this->params->replace
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: '';
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return true;
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}
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/**
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* @see stream_filter_register()
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*/
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public function filter($in, $out, &$consumed, $closing)
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{
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while ($bucket = stream_bucket_make_writeable($in)) {
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$bucket->data = str_replace($this->_search, $this->_replace, $bucket->data);
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$consumed += $bucket->datalen;
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stream_bucket_append($out, $bucket);
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}
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return PSFS_PASS_ON;
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}
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}
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