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Diffstat (limited to 'lib/private/Files/SimpleFS/NewSimpleFile.php')
| -rw-r--r-- | lib/private/Files/SimpleFS/NewSimpleFile.php | 221 |
1 files changed, 221 insertions, 0 deletions
diff --git a/lib/private/Files/SimpleFS/NewSimpleFile.php b/lib/private/Files/SimpleFS/NewSimpleFile.php new file mode 100644 index 00000000000..2c74a16fa92 --- /dev/null +++ b/lib/private/Files/SimpleFS/NewSimpleFile.php @@ -0,0 +1,221 @@ +<?php declare(strict_types=1); +/** + * @copyright Copyright (c) 2020 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\Files\SimpleFS; + +use Icewind\Streams\CallbackWrapper; +use OCP\Files\File; +use OCP\Files\Folder; +use OCP\Files\NotFoundException; +use OCP\Files\NotPermittedException; +use OCP\Files\SimpleFS\ISimpleFile; + +class NewSimpleFile implements ISimpleFile { + private $parentFolder; + private $name; + /** @var File|null */ + private $file = null; + + /** + * File constructor. + * + * @param File $file + */ + public function __construct(Folder $parentFolder, string $name) { + $this->parentFolder = $parentFolder; + $this->name = $name; + } + + /** + * Get the name + * + * @return string + */ + public function getName() { + return $this->name; + } + + /** + * Get the size in bytes + * + * @return int + */ + public function getSize() { + if ($this->file) { + return $this->file->getSize(); + } else { + return 0; + } + } + + /** + * Get the ETag + * + * @return string + */ + public function getETag() { + if ($this->file) { + return $this->file->getEtag(); + } else { + return ''; + } + } + + /** + * Get the last modification time + * + * @return int + */ + public function getMTime() { + if ($this->file) { + return $this->file->getMTime(); + } else { + return time(); + } + } + + /** + * Get the content + * + * @return string + * @throws NotFoundException + * @throws NotPermittedException + */ + public function getContent() { + if ($this->file) { + $result = $this->file->getContent(); + + if ($result === false) { + $this->checkFile(); + } + + return $result; + } else { + return ''; + } + } + + /** + * Overwrite the file + * + * @param string|resource $data + * @throws NotPermittedException + * @throws NotFoundException + */ + public function putContent($data) { + try { + if ($this->file) { + $this->file->putContent($data); + } else { + $this->file = $this->parentFolder->newFile($this->name, $data); + } + } catch (NotFoundException $e) { + $this->checkFile(); + } + } + + /** + * Sometimes there are some issues with the AppData. Most of them are from + * user error. But we should handle them gracefull anyway. + * + * If for some reason the current file can't be found. We remove it. + * Then traverse up and check all folders if they exists. This so that the + * next request will have a valid appdata structure again. + * + * @throws NotFoundException + */ + private function checkFile() { + $cur = $this->file; + + while ($cur->stat() === false) { + $parent = $cur->getParent(); + try { + $cur->delete(); + } catch (NotFoundException $e) { + // Just continue then + } + $cur = $parent; + } + + if ($cur !== $this->file) { + throw new NotFoundException('File does not exist'); + } + } + + + /** + * Delete the file + * + * @throws NotPermittedException + */ + public function delete() { + if ($this->file) { + $this->file->delete(); + } + } + + /** + * Get the MimeType + * + * @return string + */ + public function getMimeType() { + if ($this->file) { + return $this->file->getMimeType(); + } else { + return 'text/plain'; + } + } + + /** + * Open the file as stream for reading, resulting resource can be operated as stream like the result from php's own fopen + * + * @return resource + * @throws \OCP\Files\NotPermittedException + * @since 14.0.0 + */ + public function read() { + if ($this->file) { + return $this->file->fopen('r'); + } else { + return fopen('php://temp', 'r'); + } + } + + /** + * Open the file as stream for writing, resulting resource can be operated as stream like the result from php's own fopen + * + * @return resource + * @throws \OCP\Files\NotPermittedException + * @since 14.0.0 + */ + public function write() { + if ($this->file) { + return $this->file->fopen('w'); + } else { + $source = fopen('php://temp', 'w+'); + return CallbackWrapper::wrap($source, null, null, null, null, function () use ($source) { + rewind($source); + $this->putContent($source); + }); + } + } +} |