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<?php
/**
* Copyright (c) 2013 Georg Ehrke georg@ownCloud.com
* This file is licensed under the Affero General Public License version 3 or
* later.
* See the COPYING-README file.
*/
namespace OC\Preview;
abstract class Office extends Provider {
private $cmd;
/**
* {@inheritDoc}
*/
public function getThumbnail($path, $maxX, $maxY, $scalingup, $fileview) {
$this->initCmd();
if(is_null($this->cmd)) {
return false;
}
$absPath = $fileview->toTmpFile($path);
$tmpDir = get_temp_dir();
$defaultParameters = ' -env:UserInstallation=file://' . escapeshellarg($tmpDir . '/owncloud-' . \OC_Util::getInstanceId().'/') . ' --headless --nologo --nofirststartwizard --invisible --norestore --convert-to pdf --outdir ';
$clParameters = \OCP\Config::getSystemValue('preview_office_cl_parameters', $defaultParameters);
$exec = $this->cmd . $clParameters . escapeshellarg($tmpDir) . ' ' . escapeshellarg($absPath);
shell_exec($exec);
//create imagick object from pdf
try{
$pdf = new \imagick($absPath . '.pdf' . '[0]');
$pdf->setImageFormat('jpg');
} catch (\Exception $e) {
unlink($absPath);
unlink($absPath . '.pdf');
\OC_Log::write('core', $e->getmessage(), \OC_Log::ERROR);
return false;
}
$image = new \OC_Image();
$image->loadFromData($pdf);
unlink($absPath);
unlink($absPath . '.pdf');
return $image->valid() ? $image : false;
}
private function initCmd() {
$cmd = '';
if(is_string(\OC_Config::getValue('preview_libreoffice_path', null))) {
$cmd = \OC_Config::getValue('preview_libreoffice_path', null);
}
$whichLibreOffice = shell_exec('command -v libreoffice');
if($cmd === '' && !empty($whichLibreOffice)) {
$cmd = 'libreoffice';
}
$whichOpenOffice = shell_exec('command -v openoffice');
if($cmd === '' && !empty($whichOpenOffice)) {
$cmd = 'openoffice';
}
if($cmd === '') {
$cmd = null;
}
$this->cmd = $cmd;
}
}
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