41 lines
1.4 KiB
PHP
41 lines
1.4 KiB
PHP
<?php
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/**
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* Stream filter class to pass data to htmlspecialchars() in chunks.
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*
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* WARNING: This filter is not safe on multi-byte character sets, because
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* multi-byte characters might be split on chunk boundaries. This filter should
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* be considered a duct tape if the data passed to htmlspecialchars() is too
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* big for PHP's memory_limit.
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*
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* Usage:
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* stream_filter_register('htmlspecialchars', 'Horde_Stream_Filter_Htmlspecialchars');
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* stream_filter_[app|pre]pend($stream, 'htmlspecialchars',
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* [ STREAM_FILTER_[READ|WRITE|ALL] ]);
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*
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* Copyright 2012-2016 Horde LLC (http://www.horde.org/)
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*
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* See the enclosed file COPYING for license information (LGPL). If you
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* did not receive this file, see http://www.horde.org/licenses/lgpl21.
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*
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* @author Jan Schneider <jan@horde.org>
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* @category Horde
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* @license http://www.horde.org/licenses/lgpl21 LGPL 2.1
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* @package Stream_Filter
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*/
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class Horde_Stream_Filter_Htmlspecialchars extends php_user_filter
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{
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/**
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* @see stream_filter_register()
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*/
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public function filter($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 = htmlspecialchars($bucket->data);
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$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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