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Merge pull request #19493 from nextcloud/simplefile-new-lazy
Create SimpleFile only when writing the content
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,221 @@ | ||
| <?php declare(strict_types=1); | ||
| /** | ||
| * @copyright Copyright (c) 2020 Robin Appelman <[email protected]> | ||
| * | ||
| * @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); | ||
| }); | ||
| } | ||
| } | ||
| } |
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