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<?php |
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/** |
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* |
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* part-db version 0.1 |
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* Copyright (C) 2005 Christoph Lechner |
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* http://www.cl-projects.de/ |
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* |
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* part-db version 0.2+ |
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* Copyright (C) 2009 K. Jacobs and others (see authors.php) |
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* http://code.google.com/p/part-db/ |
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* |
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* Part-DB Version 0.4+ |
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* Copyright (C) 2016 - 2019 Jan Böhmer |
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* https://github.com/jbtronics |
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* |
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* This program is free software; you can redistribute it and/or |
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* modify it under the terms of the GNU General Public License |
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* as published by the Free Software Foundation; either version 2 |
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* of the License, or (at your option) any later version. |
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* |
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* This program is distributed in the hope that it will be useful, |
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* but WITHOUT ANY WARRANTY; without even the implied warranty of |
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
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* GNU General Public License for more details. |
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* |
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* You should have received a copy of the GNU General Public License |
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* along with this program; if not, write to the Free Software |
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA |
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* |
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*/ |
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namespace App\Services; |
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use App\Entity\Attachments\Attachment; |
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use App\Entity\Attachments\AttachmentContainingDBElement; |
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use App\Entity\Attachments\AttachmentTypeAttachment; |
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use App\Entity\Attachments\CategoryAttachment; |
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use App\Entity\Attachments\CurrencyAttachment; |
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use App\Entity\Attachments\DeviceAttachment; |
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use App\Entity\Attachments\FootprintAttachment; |
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use App\Entity\Attachments\GroupAttachment; |
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use App\Entity\Attachments\ManufacturerAttachment; |
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use App\Entity\Attachments\MeasurementUnitAttachment; |
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use App\Entity\Attachments\PartAttachment; |
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use App\Entity\Attachments\StorelocationAttachment; |
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use App\Entity\Attachments\SupplierAttachment; |
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use App\Entity\Attachments\UserAttachment; |
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use App\Services\Attachments\AttachmentPathResolver; |
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use Symfony\Component\HttpFoundation\File\UploadedFile; |
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use Symfony\Component\OptionsResolver\OptionsResolver; |
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/** |
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* This service contains basic commonly used functions to work with attachments. |
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* Especially this services gives you important infos about attachments, that can not be retrieved via the entities |
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* (like filesize or if a file is existing). |
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* |
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* Special operations like getting attachment urls or handling file uploading/downloading are in their own services. |
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* @package App\Services |
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*/ |
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class AttachmentManager |
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{ |
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protected $pathResolver; |
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public function __construct(AttachmentPathResolver $pathResolver) |
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{ |
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$this->pathResolver = $pathResolver; |
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} |
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/** |
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* Gets an SPLFileInfo object representing the file associated with the attachment. |
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* @param Attachment $attachment The attachment for which the file should be generated |
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* @return \SplFileInfo|null The fileinfo for the attachment file. Null, if the attachment is external or has |
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* invalid file. |
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*/ |
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public function attachmentToFile(Attachment $attachment) : ?\SplFileInfo |
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{ |
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if ($attachment->isExternal() || !$this->isFileExisting($attachment)) { |
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return null; |
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} |
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return new \SplFileInfo($this->toAbsoluteFilePath($attachment)); |
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} |
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/** |
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* Returns the absolute filepath of the attachment. Null is returned, if the attachment is externally saved, |
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* or is not existing. |
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* @param Attachment $attachment The attachment for which the filepath should be determined |
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* @return string|null |
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*/ |
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public function toAbsoluteFilePath(Attachment $attachment): ?string |
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{ |
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if (empty($attachment->getPath())) { |
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return null; |
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} |
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if ($attachment->isExternal()) { |
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return null; |
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} |
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$path = $this->pathResolver->placeholderToRealPath($attachment->getPath()); |
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//realpath does not work with null as argument |
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if ($path === null) { |
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return null; |
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} |
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$tmp = realpath($path); |
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//If path is not existing realpath returns false. |
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if ($tmp === false) { |
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return null; |
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} |
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return $tmp; |
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} |
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/** |
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* Checks if the file in this attachement is existing. This works for files on the HDD, and for URLs |
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* (it's not checked if the ressource behind the URL is really existing, so for every external attachment true is returned). |
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* |
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* @param Attachment $attachment The attachment for which the existence should be checked |
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* |
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* @return bool True if the file is existing. |
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*/ |
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public function isFileExisting(Attachment $attachment): bool |
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{ |
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if (empty($attachment->getPath())) { |
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return false; |
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} |
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return file_exists($this->toAbsoluteFilePath($attachment)) || $attachment->isExternal(); |
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} |
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/** |
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* Returns the filesize of the attachments in bytes. |
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* For external attachments or not existing attachments, null is returned. |
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* |
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* @param Attachment $attachment The filesize for which the filesize should be calculated. |
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* @return int|null |
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*/ |
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public function getFileSize(Attachment $attachment): ?int |
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{ |
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if ($attachment->isExternal()) { |
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return null; |
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} |
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if (!$this->isFileExisting($attachment)) { |
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return null; |
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} |
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$tmp = filesize($this->toAbsoluteFilePath($attachment)); |
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return $tmp !== false ? $tmp : null; |
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} |
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/** |
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* Returns a human readable version of the attachment file size. |
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* For external attachments, null is returned. |
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* |
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* @param Attachment $attachment |
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* @param int $decimals The number of decimals numbers that should be printed |
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* @return string|null A string like 1.3M |
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*/ |
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public function getHumanFileSize(Attachment $attachment, $decimals = 2): ?string |
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{ |
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$bytes = $this->getFileSize($attachment); |
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if ($bytes == null) { |
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return null; |
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} |
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//Format filesize for human reading |
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//Taken from: https://www.php.net/manual/de/function.filesize.php#106569 and slightly modified |
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$sz = 'BKMGTP'; |
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$factor = (int) floor((strlen($bytes) - 1) / 3); |
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return sprintf("%.{$decimals}f", $bytes / 1024 ** $factor) . @$sz[$factor]; |
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} |
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} |
Part-DB /
Part-DB-symfony
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