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<?php
/**
* @file classes/search/SearchHelperParser.inc.php
*
* Copyright (c) 2014-2021 Simon Fraser University
* Copyright (c) 2000-2021 John Willinsky
* Distributed under the GNU GPL v3. For full terms see the file docs/COPYING.
*
* @class SearchHelperParser
* @ingroup search
*
* @brief Class to extract text from a file using an external helper program.
*/
import('lib.pkp.classes.search.SearchFileParser');
class SearchHelperParser extends SearchFileParser {
/** @var string Type should match an index[$type] setting in the "search" section of config.inc.php */
var $type;
function __construct($type, $filePath) {
parent::__construct($filePath);
$this->type = $type;
}
function open() {
$prog = Config::getVar('search', 'index[' . $this->type . ']');
if (isset($prog)) {
$exec = sprintf($prog, escapeshellarg($this->getFilePath()));
$this->fp = @popen($exec, 'r');
return $this->fp ? true : false;
}
return false;
}
function close() {
pclose($this->fp);
}
}