111 lines
2.8 KiB
PHP
111 lines
2.8 KiB
PHP
|
<?php
|
||
|
|
|
||
|
|
declare(strict_types=1);
|
||
|
|
|
||
|
|
/**
|
||
|
|
* @copyright Copyright (c) 2019 Robin Appelman <robin@icewind.nl>
|
||
|
|
*
|
||
|
|
* @author Robin Appelman <robin@icewind.nl>
|
||
|
|
*
|
||
|
|
* @license GNU AGPL version 3 or any later version
|
||
|
|
*
|
||
|
|
* This program is free software: you can redistribute it and/or modify
|
||
|
|
* it under the terms of the GNU Affero General Public License as
|
||
|
|
* published by the Free Software Foundation, either version 3 of the
|
||
|
|
* License, or (at your option) any later version.
|
||
|
|
*
|
||
|
|
* This program is distributed in the hope that it will be useful,
|
||
|
|
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
||
|
|
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
||
|
|
* GNU Affero General Public License for more details.
|
||
|
|
*
|
||
|
|
* You should have received a copy of the GNU Affero General Public License
|
||
|
|
* along with this program. If not, see <http://www.gnu.org/licenses/>.
|
||
|
|
*
|
||
|
|
*/
|
||
|
|
|
||
|
|
namespace OC\Preview;
|
||
|
|
|
||
|
|
use OCP\Files\File;
|
||
|
|
use OCP\Files\FileInfo;
|
||
|
|
use OCP\IImage;
|
||
|
|
use OCP\Preview\IProviderV2;
|
||
|
|
|
||
|
|
abstract class ProviderV2 implements IProviderV2 {
|
||
|
|
private $options;
|
||
|
|
|
||
|
|
private $tmpFiles = [];
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Constructor
|
||
|
|
*
|
||
|
|
* @param array $options
|
||
|
|
*/
|
||
|
|
public function __construct(array $options = []) {
|
||
|
|
$this->options = $options;
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* @return string Regex with the mimetypes that are supported by this provider
|
||
|
|
*/
|
||
|
|
abstract public function getMimeType(): string ;
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Check if a preview can be generated for $path
|
||
|
|
*
|
||
|
|
* @param FileInfo $file
|
||
|
|
* @return bool
|
||
|
|
*/
|
||
|
|
public function isAvailable(FileInfo $file): bool {
|
||
|
|
return true;
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* get thumbnail for file at path $path
|
||
|
|
*
|
||
|
|
* @param File $file
|
||
|
|
* @param int $maxX The maximum X size of the thumbnail. It can be smaller depending on the shape of the image
|
||
|
|
* @param int $maxY The maximum Y size of the thumbnail. It can be smaller depending on the shape of the image
|
||
|
|
* @return null|\OCP\IImage false if no preview was generated
|
||
|
|
* @since 17.0.0
|
||
|
|
*/
|
||
|
|
abstract public function getThumbnail(File $file, int $maxX, int $maxY): ?IImage;
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Get a path to either the local file or temporary file
|
||
|
|
*
|
||
|
|
* @param File $file
|
||
|
|
* @param int $maxSize maximum size for temporary files
|
||
|
|
* @return string
|
||
|
|
*/
|
||
|
|
protected function getLocalFile(File $file, int $maxSize = null): string {
|
||
|
|
$useTempFile = $file->isEncrypted() || !$file->getStorage()->isLocal();
|
||
|
|
if ($useTempFile) {
|
||
|
|
$absPath = \OC::$server->getTempManager()->getTemporaryFile();
|
||
|
|
|
||
|
|
$content = $file->fopen('r');
|
||
|
|
|
||
|
|
if ($maxSize) {
|
||
|
|
$content = stream_get_contents($content, $maxSize);
|
||
|
|
}
|
||
|
|
|
||
|
|
file_put_contents($absPath, $content);
|
||
|
|
$this->tmpFiles[] = $absPath;
|
||
|
|
return $absPath;
|
||
|
|
} else {
|
||
|
|
return $file->getStorage()->getLocalFile($file->getInternalPath());
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Clean any generated temporary files
|
||
|
|
*/
|
||
|
|
protected function cleanTmpFiles() {
|
||
|
|
foreach ($this->tmpFiles as $tmpFile) {
|
||
|
|
unlink($tmpFile);
|
||
|
|
}
|
||
|
|
|
||
|
|
$this->tmpFiles = [];
|
||
|
|
}
|
||
|
|
}
|