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physical_pdf.php
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physical_pdf.php
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<?php
/**
* Global Search Engine for Moodle
*
* @package search
* @category core
* @subpackage document_wrappers
* @author Valery Fremaux [valery.fremaux@club-internet.fr] > 1.8
* @date 2008/03/31
* @license http://www.gnu.org/copyleft/gpl.html GNU Public License
*
* this is a format handler for getting text out of a proprietary binary format
* so it can be indexed by Lucene search engine
*/
/**
* @param object $resource
* @uses CFG, USER
*/
function get_text_for_indexing_pdf(&$resource){
global $CFG, $USER;
// SECURITY : do not allow non admin execute anything on system !!
if (!isadmin($USER->id)) return;
$moodleroot = (@$CFG->block_search_usemoodleroot) ? "{$CFG->dirroot}/" : '' ;
// just call pdftotext over stdout and capture the output
if (!empty($CFG->block_search_pdf_to_text_cmd)){
preg_match("/^\S+/", $CFG->block_search_pdf_to_text_cmd, $matches);
if (!file_exists("{$moodleroot}{$matches[0]}")){
mtrace('Error with pdf to text converter command : exectuable not found.');
}
else{
$file = escapeshellarg($CFG->dataroot.'/'.$resource->course.'/'.$resource->reference);
$command = trim($CFG->block_search_pdf_to_text_cmd);
$text_converter_cmd = "{$moodleroot}{$command} $file -";
$result = shell_exec($text_converter_cmd);
if ($result){
return $result;
}
else{
mtrace('Error with pdf to text converter command : execution failed.');
return '';
}
}
}
else {
mtrace('Error with pdf to text converter command : command not set up. Execute once search block configuration.');
return '';
}
}
?>