PreviewManager::getEnabledDefaultProvider() - Code Metrics - Inspection of "Merge pull request #31785 from owncloud/previews-r..." - owncloud/core - Measure and Improve Code Quality continuously with Scrutinizer

Completed

Push — master ( db7984...ab328d )

by Thomas

created 2018-06-14 18:22 UTC

PreviewManager::getEnabledDefaultProvider() B

↳ Parent: PreviewManager

Complexity

Conditions	3
Paths	3

Size

Total Lines	26
Code Lines	19

Duplication

Lines	0
Ratio	0 %

Importance

Changes

Metric	Value
cc	3
eloc	19
nc	3
nop	0
dl	0
loc	26
rs	8.8571
c	0
b	0
f	0

<?php
/**
 * @author Joas Schilling <[email protected]>
 * @author Morris Jobke <[email protected]>
 * @author Olivier Paroz <[email protected]>
 * @author Robin Appelman <[email protected]>
 * @author Thomas Müller <[email protected]>
 * @author Vincent Petry <[email protected]>
 * @author Lorenzo Perone <[email protected]>
 *
 * @copyright Copyright (c) 2018, ownCloud GmbH
 * @license AGPL-3.0
 *
 * This code is free software: you can redistribute it and/or modify
 * it under the terms of the GNU Affero General Public License, version 3,
 * as published by the Free Software Foundation.
 *
 * 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, version 3,
 * along with this program.  If not, see <http://www.gnu.org/licenses/>
 *
 */
namespace OC;

use OC\AppFramework\Middleware\Security\Exceptions\NotLoggedInException;
use OCP\Files\IRootFolder;
use OCP\IConfig;
use OCP\IImage;
use OCP\IPreview;
use OCP\IUserSession;
use OCP\Preview\IProvider;
use OCP\Preview\IProvider2;

class PreviewManager implements IPreview {
	/** @var IConfig */
	protected $config;

	/** @var bool */
	protected $providerListDirty = false;

	/** @var bool */
	protected $registeredCoreProviders = false;

	/** @var array */
	protected $providers = [];

	/** @var array mime type => support status */
	protected $mimeTypeSupportMap = [];

	/** @var array */
	protected $defaultProviders;

	/** @var IRootFolder */
	private $rootFolder;

	/** @var IUserSession */
	private $userSession;

	/**
	 * Constructor
	 *
	 * @param IConfig $config
	 * @param IRootFolder $rootFolder
	 * @param IUserSession $userSession
	 */
	public function __construct(IConfig $config, IRootFolder $rootFolder, IUserSession $userSession) {
		$this->config = $config;
		$this->rootFolder = $rootFolder;
		$this->userSession = $userSession;
	}

	/**
	 * In order to improve lazy loading a closure can be registered which will be
	 * called in case preview providers are actually requested
	 *
	 * $callable has to return an instance of \OCP\Preview\IProvider
	 *
	 * @param string $mimeTypeRegex Regex with the mime types that are supported by this provider
	 * @param \Closure $callable
	 * @return void
	 */
	public function registerProvider($mimeTypeRegex, \Closure $callable) {
		if (!$this->config->getSystemValue('enable_previews', true)) {
			return;
		}

		if (!isset($this->providers[$mimeTypeRegex])) {
			$this->providers[$mimeTypeRegex] = [];
		}
		$this->providers[$mimeTypeRegex][] = $callable;
		$this->providerListDirty = true;
	}

	/**
	 * Get all providers
	 * @return array
	 */
	public function getProviders() {
		if (!$this->config->getSystemValue('enable_previews', true)) {
			return [];
		}

		$this->registerCoreProviders();
		if ($this->providerListDirty) {
			$keys = \array_map('strlen', \array_keys($this->providers));
			\array_multisort($keys, SORT_DESC, $this->providers);
			$this->providerListDirty = false;
		}

		return $this->providers;
	}

	/**
	 * Does the manager have any providers
	 * @return bool
	 */
	public function hasProviders() {
		$this->registerCoreProviders();
		return !empty($this->providers);
	}

	/**
	 * return a preview of a file
	 *
	 * @param string $file The path to the file where you want a thumbnail from
	 * @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
	 * @param boolean $scaleUp Scale smaller images up to the thumbnail size or not. Might look ugly
	 * @return IImage
	 * @throws NotLoggedInException
	 * @throws \OCP\Files\NotFoundException
	 * @throws \Exception
	 */
	public function createPreview($file, $maxX = 100, $maxY = 75, $scaleUp = false) {
		$user = $this->userSession->getUser();
		if ($user === null) {
			throw new NotLoggedInException();
		}
		$file = $this->rootFolder->getUserFolder($user->getUID())->getParent()->get($file);
		$preview = new Preview('', '/', $file, $maxX, $maxY, $scaleUp);
		return $preview->getPreview();
	}

	/**
	 * returns true if the passed mime type is supported
	 *
	 * @param string $mimeType
	 * @return boolean
	 */
	public function isMimeSupported($mimeType = '*') {
		if (!$this->config->getSystemValue('enable_previews', true)) {
			return false;
		}

		if (isset($this->mimeTypeSupportMap[$mimeType])) {
			return $this->mimeTypeSupportMap[$mimeType];
		}

		$this->registerCoreProviders();
		$providerMimeTypes = \array_keys($this->providers);
		foreach ($providerMimeTypes as $supportedMimeType) {
			if (\preg_match($supportedMimeType, $mimeType)) {
				$this->mimeTypeSupportMap[$mimeType] = true;
				return true;
			}
		}
		$this->mimeTypeSupportMap[$mimeType] = false;
		return false;
	}
	
	/**
	 * Returns all registered MimeTypes as an array
	 *
	 * @return string[]
	 */
	public function getSupportedMimes() {
		$supportedMimes = [];
		$this->registerCoreProviders();
		$mimeRegexArray = \array_keys($this->providers);
		// Now trim start/stop regexp delimiters
		foreach ($mimeRegexArray as $mimeRegex) {
			$supportedMimes[] = \trim($mimeRegex, '/');
		}
		return $supportedMimes;
	}

	/**
	 * Check if a preview can be generated for a file
	 *
	 * @param \OCP\Files\FileInfo $file
	 * @return bool
	 */
	public function isAvailable(\OCP\Files\FileInfo $file) {
		if (!$this->config->getSystemValue('enable_previews', true)) {
			return false;
		}

		$this->registerCoreProviders();
		if (!$this->isMimeSupported($file->getMimetype())) {
			return false;
		}

		$mount = $file->getMountPoint();
		if ($mount and !$mount->getOption('previews', true)) {
			return false;
		}

		foreach ($this->providers as $supportedMimeType => $providers) {
			if (\preg_match($supportedMimeType, $file->getMimetype())) {
				foreach ($providers as $closure) {
					$provider = $closure();
					if (!($provider instanceof IProvider) && !($provider instanceof IProvider2)) {
						continue;
					}

					/** @var $provider IProvider */
					if ($provider->isAvailable($file)) {
						return true;
					}
				}
			}
		}
		return false;
	}

	/**
	 * List of enabled default providers
	 *
	 * The following providers are enabled by default:
	 *  - OC\Preview\PNG
	 *  - OC\Preview\JPEG
	 *  - OC\Preview\GIF
	 *  - OC\Preview\BMP
	 *  - OC\Preview\XBitmap
	 *  - OC\Preview\MarkDown
	 *  - OC\Preview\MP3
	 *  - OC\Preview\TXT
	 *
	 * The following providers are disabled by default due to performance or privacy concerns:
	 *  - OC\Preview\Font
	 *  - OC\Preview\Illustrator
	 *  - OC\Preview\Movie
	 *  - OC\Preview\MSOfficeDoc
	 *  - OC\Preview\MSOffice2003
	 *  - OC\Preview\MSOffice2007
	 *  - OC\Preview\OpenDocument
	 *  - OC\Preview\PDF
	 *  - OC\Preview\Photoshop
	 *  - OC\Preview\Postscript
	 *  - OC\Preview\StarOffice
	 *  - OC\Preview\SVG
	 *  - OC\Preview\TIFF
	 *
	 * @return array
	 */
	protected function getEnabledDefaultProvider() {
		if ($this->defaultProviders !== null) {
			return $this->defaultProviders;
		}

		$imageProviders = [
			'OC\Preview\PNG',
			'OC\Preview\JPEG',
			'OC\Preview\GIF',
			'OC\Preview\BMP',
			'OC\Preview\Heic',
			'OC\Preview\XBitmap'
		];

		$this->defaultProviders = $this->config->getSystemValue('enabledPreviewProviders', \array_merge([

			'OC\Preview\MarkDown',
			'OC\Preview\MP3',
			'OC\Preview\TXT',
		], $imageProviders));

		if (\in_array('OC\Preview\Image', $this->defaultProviders)) {
			$this->defaultProviders = \array_merge($this->defaultProviders, $imageProviders);
		}
		$this->defaultProviders = \array_unique($this->defaultProviders);
		return $this->defaultProviders;
	}

	/**
	 * Register the default providers (if enabled)
	 *
	 * @param string $class
	 * @param string $mimeType
	 */
	protected function registerCoreProvider($class, $mimeType, $options = []) {
		if (\in_array(\trim($class, '\\'), $this->getEnabledDefaultProvider())) {
			$this->registerProvider($mimeType, function () use ($class, $options) {
				return new $class($options);
			});
		}
	}

	/**
	 * Register the default providers (if enabled)
	 */
	protected function registerCoreProviders() {
		if ($this->registeredCoreProviders) {
			return;
		}
		$this->registeredCoreProviders = true;

		$this->registerCoreProvider('OC\Preview\TXT', '/text\/plain/');
		$this->registerCoreProvider('OC\Preview\MarkDown', '/text\/(x-)?markdown/');
		$this->registerCoreProvider('OC\Preview\PNG', '/image\/png/');
		$this->registerCoreProvider('OC\Preview\JPEG', '/image\/jpeg/');
		$this->registerCoreProvider('OC\Preview\GIF', '/image\/gif/');
		$this->registerCoreProvider('OC\Preview\BMP', '/image\/bmp/');
		$this->registerCoreProvider('OC\Preview\XBitmap', '/image\/x-xbitmap/');
		$this->registerCoreProvider('OC\Preview\MP3', '/audio\/mpeg/');

		// SVG, Office and Bitmap require imagick
		if (\extension_loaded('imagick')) {
			$checkImagick = new \Imagick();

			$imagickProviders = [
				'SVG'	=> ['mimetype' => '/image\/svg\+xml/', 'class' => '\OC\Preview\SVG'],
				'TIFF'	=> ['mimetype' => '/image\/tiff/', 'class' => '\OC\Preview\TIFF'],
				'PDF'	=> ['mimetype' => '/application\/pdf/', 'class' => '\OC\Preview\PDF'],
				'AI'	=> ['mimetype' => '/application\/illustrator/', 'class' => '\OC\Preview\Illustrator'],
				'PSD'	=> ['mimetype' => '/application\/x-photoshop/', 'class' => '\OC\Preview\Photoshop'],
				'EPS'	=> ['mimetype' => '/application\/postscript/', 'class' => '\OC\Preview\Postscript'],
				'TTF'	=> ['mimetype' => '/application\/(?:font-sfnt|x-font$)/', 'class' => '\OC\Preview\Font'],
				'HEIC'	=> ['mimetype' => '/image\/hei(f|c)/', 'class' => '\OC\Preview\Heic'],
			];

			foreach ($imagickProviders as $queryFormat => $provider) {
				$class = $provider['class'];
				if (!\in_array(\trim($class, '\\'), $this->getEnabledDefaultProvider())) {
					continue;
				}

				if (\count($checkImagick->queryFormats($queryFormat)) === 1) {
					$this->registerCoreProvider($class, $provider['mimetype']);
				}
			}

			if (\count($checkImagick->queryFormats('PDF')) === 1) {
				// Office previews are currently not supported on Windows
				if (\OC_Helper::is_function_enabled('shell_exec')) {
					$officeFound = \is_string($this->config->getSystemValue('preview_libreoffice_path', null));

					if (!$officeFound) {
						//let's see if there is libreoffice or openoffice on this machine
						$whichLibreOffice = \shell_exec('command -v libreoffice');
						$officeFound = !empty($whichLibreOffice);
						if (!$officeFound) {
							$whichOpenOffice = \shell_exec('command -v openoffice');
							$officeFound = !empty($whichOpenOffice);
						}
					}

					if ($officeFound) {
						$this->registerCoreProvider('\OC\Preview\MSOfficeDoc', '/application\/msword/');
						$this->registerCoreProvider('\OC\Preview\MSOffice2003', '/application\/vnd.ms-.*/');
						$this->registerCoreProvider('\OC\Preview\MSOffice2007', '/application\/vnd.openxmlformats-officedocument.*/');
						$this->registerCoreProvider('\OC\Preview\OpenDocument', '/application\/vnd.oasis.opendocument.*/');
						$this->registerCoreProvider('\OC\Preview\StarOffice', '/application\/vnd.sun.xml.*/');
					}
				}
			}
		}

		// Video requires avconv or ffmpeg and is therefor
		// currently not supported on Windows.
		if (\in_array('OC\Preview\Movie', $this->getEnabledDefaultProvider())) {
			// AtomicParsley would actually work under Windows.
			$avconvBinary = \OC_Helper::findBinaryPath('avconv');
			$ffmpegBinary = ($avconvBinary) ? null : \OC_Helper::findBinaryPath('ffmpeg');
			$atomicParsleyBinary = \OC_Helper::findBinaryPath('AtomicParsley');

			// FIXME // a bit hacky but didn't want to use subclasses
			$registerProvider = false;
			if ($avconvBinary !== null) {
				\OC\Preview\Movie::$avconvBinary = $avconvBinary;
				$registerProvider = true;
			}
			if ($ffmpegBinary !== null) {
				\OC\Preview\Movie::$ffmpegBinary = $ffmpegBinary;
				$registerProvider = true;
			}
			if ($atomicParsleyBinary !== null) {
				\OC\Preview\Movie::$atomicParsleyBinary = $atomicParsleyBinary;
				$registerProvider = true;
			}
			if ($registerProvider === true) {
				$this->registerCoreProvider('\OC\Preview\Movie', '/video\/.*/');
			}
		}
	}
}


1			<?php
2			/**
3			* @author Joas Schilling <[email protected]>
4			* @author Morris Jobke <[email protected]>
5			* @author Olivier Paroz <[email protected]>
6			* @author Robin Appelman <[email protected]>
7			* @author Thomas Müller <[email protected]>
8			* @author Vincent Petry <[email protected]>
9			* @author Lorenzo Perone <[email protected]>
10			*
11			* @copyright Copyright (c) 2018, ownCloud GmbH
12			* @license AGPL-3.0
13			*
14			* This code is free software: you can redistribute it and/or modify
15			* it under the terms of the GNU Affero General Public License, version 3,
16			* as published by the Free Software Foundation.
17			*
18			* This program is distributed in the hope that it will be useful,
19			* but WITHOUT ANY WARRANTY; without even the implied warranty of
20			* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
21			* GNU Affero General Public License for more details.
22			*
23			* You should have received a copy of the GNU Affero General Public License, version 3,
24			* along with this program. If not, see <http://www.gnu.org/licenses/>
25			*
26			*/
27			namespace OC;
28
29			use OC\AppFramework\Middleware\Security\Exceptions\NotLoggedInException;
30			use OCP\Files\IRootFolder;
31			use OCP\IConfig;
32			use OCP\IImage;
33			use OCP\IPreview;
34			use OCP\IUserSession;
35			use OCP\Preview\IProvider;
36			use OCP\Preview\IProvider2;
37
38			class PreviewManager implements IPreview {
39			/** @var IConfig */
40			protected $config;
41
42			/** @var bool */
43			protected $providerListDirty = false;
44
45			/** @var bool */
46			protected $registeredCoreProviders = false;
47
48			/** @var array */
49			protected $providers = [];
50
51			/** @var array mime type => support status */
52			protected $mimeTypeSupportMap = [];
53
54			/** @var array */
55			protected $defaultProviders;
56
57			/** @var IRootFolder */
58			private $rootFolder;
59
60			/** @var IUserSession */
61			private $userSession;
62
63			/**
64			* Constructor
65			*
66			* @param IConfig $config
67			* @param IRootFolder $rootFolder
68			* @param IUserSession $userSession
69			*/
70			public function __construct(IConfig $config, IRootFolder $rootFolder, IUserSession $userSession) {
71			$this->config = $config;
72			$this->rootFolder = $rootFolder;
73			$this->userSession = $userSession;
74			}
75
76			/**
77			* In order to improve lazy loading a closure can be registered which will be
78			* called in case preview providers are actually requested
79			*
80			* $callable has to return an instance of \OCP\Preview\IProvider
81			*
82			* @param string $mimeTypeRegex Regex with the mime types that are supported by this provider
83			* @param \Closure $callable
84			* @return void
85			*/
86			public function registerProvider($mimeTypeRegex, \Closure $callable) {
87			if (!$this->config->getSystemValue('enable_previews', true)) {
88			return;
89			}
90
91			if (!isset($this->providers[$mimeTypeRegex])) {
92			$this->providers[$mimeTypeRegex] = [];
93			}
94			$this->providers[$mimeTypeRegex][] = $callable;
95			$this->providerListDirty = true;
96			}
97
98			/**
99			* Get all providers
100			* @return array
101			*/
102			public function getProviders() {
103			if (!$this->config->getSystemValue('enable_previews', true)) {
104			return [];
105			}
106
107			$this->registerCoreProviders();
108			if ($this->providerListDirty) {
109			$keys = \array_map('strlen', \array_keys($this->providers));
110			\array_multisort($keys, SORT_DESC, $this->providers);
111			$this->providerListDirty = false;
112			}
113
114			return $this->providers;
115			}
116
117			/**
118			* Does the manager have any providers
119			* @return bool
120			*/
121			public function hasProviders() {
122			$this->registerCoreProviders();
123			return !empty($this->providers);
124			}
125
126			/**
127			* return a preview of a file
128			*
129			* @param string $file The path to the file where you want a thumbnail from
130			* @param int $maxX The maximum X size of the thumbnail. It can be smaller depending on the shape of the image
131			* @param int $maxY The maximum Y size of the thumbnail. It can be smaller depending on the shape of the image
132			* @param boolean $scaleUp Scale smaller images up to the thumbnail size or not. Might look ugly
133			* @return IImage
134			* @throws NotLoggedInException
135			* @throws \OCP\Files\NotFoundException
136			* @throws \Exception
137			*/
138			public function createPreview($file, $maxX = 100, $maxY = 75, $scaleUp = false) {
139			$user = $this->userSession->getUser();
140			if ($user === null) {
141			throw new NotLoggedInException();
142			}
143			$file = $this->rootFolder->getUserFolder($user->getUID())->getParent()->get($file);
144			$preview = new Preview('', '/', $file, $maxX, $maxY, $scaleUp);
145			return $preview->getPreview();
146			}
147
148			/**
149			* returns true if the passed mime type is supported
150			*
151			* @param string $mimeType
152			* @return boolean
153			*/
154			public function isMimeSupported($mimeType = '*') {
155			if (!$this->config->getSystemValue('enable_previews', true)) {
156			return false;
157			}
158
159			if (isset($this->mimeTypeSupportMap[$mimeType])) {
160			return $this->mimeTypeSupportMap[$mimeType];
161			}
162
163			$this->registerCoreProviders();
164			$providerMimeTypes = \array_keys($this->providers);
165			foreach ($providerMimeTypes as $supportedMimeType) {
166			if (\preg_match($supportedMimeType, $mimeType)) {
167			$this->mimeTypeSupportMap[$mimeType] = true;
168			return true;
169			}
170			}
171			$this->mimeTypeSupportMap[$mimeType] = false;
172			return false;
173			}
174
175			/**
176			* Returns all registered MimeTypes as an array
177			*
178			* @return string[]
179			*/
180			public function getSupportedMimes() {
181			$supportedMimes = [];
182			$this->registerCoreProviders();
183			$mimeRegexArray = \array_keys($this->providers);
184			// Now trim start/stop regexp delimiters
185			foreach ($mimeRegexArray as $mimeRegex) {
186			$supportedMimes[] = \trim($mimeRegex, '/');
187			}
188			return $supportedMimes;
189			}
190
191			/**
192			* Check if a preview can be generated for a file
193			*
194			* @param \OCP\Files\FileInfo $file
195			* @return bool
196			*/
197			public function isAvailable(\OCP\Files\FileInfo $file) {
198			if (!$this->config->getSystemValue('enable_previews', true)) {
199			return false;
200			}
201
202			$this->registerCoreProviders();
203			if (!$this->isMimeSupported($file->getMimetype())) {
204			return false;
205			}
206
207			$mount = $file->getMountPoint();
208			if ($mount and !$mount->getOption('previews', true)) {
209			return false;
210			}
211
212			foreach ($this->providers as $supportedMimeType => $providers) {
213			if (\preg_match($supportedMimeType, $file->getMimetype())) {
214			foreach ($providers as $closure) {
215			$provider = $closure();
216			if (!($provider instanceof IProvider) && !($provider instanceof IProvider2)) {
217			continue;
218			}
219
220			/** @var $provider IProvider */
221			if ($provider->isAvailable($file)) {
222			return true;
223			}
224			}
225			}
226			}
227			return false;
228			}
229
230			/**
231			* List of enabled default providers
232			*
233			* The following providers are enabled by default:
234			* - OC\Preview\PNG
235			* - OC\Preview\JPEG
236			* - OC\Preview\GIF
237			* - OC\Preview\BMP
238			* - OC\Preview\XBitmap
239			* - OC\Preview\MarkDown
240			* - OC\Preview\MP3
241			* - OC\Preview\TXT
242			*
243			* The following providers are disabled by default due to performance or privacy concerns:
244			* - OC\Preview\Font
245			* - OC\Preview\Illustrator
246			* - OC\Preview\Movie
247			* - OC\Preview\MSOfficeDoc
248			* - OC\Preview\MSOffice2003
249			* - OC\Preview\MSOffice2007
250			* - OC\Preview\OpenDocument
251			* - OC\Preview\PDF
252			* - OC\Preview\Photoshop
253			* - OC\Preview\Postscript
254			* - OC\Preview\StarOffice
255			* - OC\Preview\SVG
256			* - OC\Preview\TIFF
257			*
258			* @return array
259			*/
260			protected function getEnabledDefaultProvider() {
261			if ($this->defaultProviders !== null) {
262			return $this->defaultProviders;
263			}
264
265			$imageProviders = [
266			'OC\Preview\PNG',
267			'OC\Preview\JPEG',
268			'OC\Preview\GIF',
269			'OC\Preview\BMP',
270			'OC\Preview\Heic',
271			'OC\Preview\XBitmap'
272			];
273
274			$this->defaultProviders = $this->config->getSystemValue('enabledPreviewProviders', \array_merge([
			0 ignored issues – show Documentation Bug introduced 2018-04-19 10:33 UTC by Report Bug Copy Issue Report It seems like `$this->config->getSystem...XT'), $imageProviders))` of type `*` is incompatible with the declared type `array` of property `$defaultProviders`. Our type inference engine has found an assignment to a property that is incompatible with the declared type of that property. Either this assignment is in error or the assigned type should be added to the documentation/type hint for that property.. Loading history...
275			'OC\Preview\MarkDown',
276			'OC\Preview\MP3',
277			'OC\Preview\TXT',
278			], $imageProviders));
279
280			if (\in_array('OC\Preview\Image', $this->defaultProviders)) {
281			$this->defaultProviders = \array_merge($this->defaultProviders, $imageProviders);
282			}
283			$this->defaultProviders = \array_unique($this->defaultProviders);
284			return $this->defaultProviders;
285			}
286
287			/**
288			* Register the default providers (if enabled)
289			*
290			* @param string $class
291			* @param string $mimeType
292			*/
293			protected function registerCoreProvider($class, $mimeType, $options = []) {
294			if (\in_array(\trim($class, '\\'), $this->getEnabledDefaultProvider())) {
295			$this->registerProvider($mimeType, function () use ($class, $options) {
296			return new $class($options);
297			});
298			}
299			}
300
301			/**
302			* Register the default providers (if enabled)
303			*/
304			protected function registerCoreProviders() {
305			if ($this->registeredCoreProviders) {
306			return;
307			}
308			$this->registeredCoreProviders = true;
309
310			$this->registerCoreProvider('OC\Preview\TXT', '/text\/plain/');
311			$this->registerCoreProvider('OC\Preview\MarkDown', '/text\/(x-)?markdown/');
312			$this->registerCoreProvider('OC\Preview\PNG', '/image\/png/');
313			$this->registerCoreProvider('OC\Preview\JPEG', '/image\/jpeg/');
314			$this->registerCoreProvider('OC\Preview\GIF', '/image\/gif/');
315			$this->registerCoreProvider('OC\Preview\BMP', '/image\/bmp/');
316			$this->registerCoreProvider('OC\Preview\XBitmap', '/image\/x-xbitmap/');
317			$this->registerCoreProvider('OC\Preview\MP3', '/audio\/mpeg/');
318
319			// SVG, Office and Bitmap require imagick
320			if (\extension_loaded('imagick')) {
321			$checkImagick = new \Imagick();
322
323			$imagickProviders = [
324			'SVG' => ['mimetype' => '/image\/svg\+xml/', 'class' => '\OC\Preview\SVG'],
325			'TIFF' => ['mimetype' => '/image\/tiff/', 'class' => '\OC\Preview\TIFF'],
326			'PDF' => ['mimetype' => '/application\/pdf/', 'class' => '\OC\Preview\PDF'],
327			'AI' => ['mimetype' => '/application\/illustrator/', 'class' => '\OC\Preview\Illustrator'],
328			'PSD' => ['mimetype' => '/application\/x-photoshop/', 'class' => '\OC\Preview\Photoshop'],
329			'EPS' => ['mimetype' => '/application\/postscript/', 'class' => '\OC\Preview\Postscript'],
330			'TTF' => ['mimetype' => '/application\/(?:font-sfnt\|x-font$)/', 'class' => '\OC\Preview\Font'],
331			'HEIC' => ['mimetype' => '/image\/hei(f\|c)/', 'class' => '\OC\Preview\Heic'],
332			];
333
334			foreach ($imagickProviders as $queryFormat => $provider) {
335			$class = $provider['class'];
336			if (!\in_array(\trim($class, '\\'), $this->getEnabledDefaultProvider())) {
337			continue;
338			}
339
340			if (\count($checkImagick->queryFormats($queryFormat)) === 1) {
341			$this->registerCoreProvider($class, $provider['mimetype']);
342			}
343			}
344
345			if (\count($checkImagick->queryFormats('PDF')) === 1) {
346			// Office previews are currently not supported on Windows
347			if (\OC_Helper::is_function_enabled('shell_exec')) {
348			$officeFound = \is_string($this->config->getSystemValue('preview_libreoffice_path', null));
349
350			if (!$officeFound) {
351			//let's see if there is libreoffice or openoffice on this machine
352			$whichLibreOffice = \shell_exec('command -v libreoffice');
353			$officeFound = !empty($whichLibreOffice);
354			if (!$officeFound) {
355			$whichOpenOffice = \shell_exec('command -v openoffice');
356			$officeFound = !empty($whichOpenOffice);
357			}
358			}
359
360			if ($officeFound) {
361			$this->registerCoreProvider('\OC\Preview\MSOfficeDoc', '/application\/msword/');
362			$this->registerCoreProvider('\OC\Preview\MSOffice2003', '/application\/vnd.ms-.*/');
363			$this->registerCoreProvider('\OC\Preview\MSOffice2007', '/application\/vnd.openxmlformats-officedocument.*/');
364			$this->registerCoreProvider('\OC\Preview\OpenDocument', '/application\/vnd.oasis.opendocument.*/');
365			$this->registerCoreProvider('\OC\Preview\StarOffice', '/application\/vnd.sun.xml.*/');
366			}
367			}
368			}
369			}
370
371			// Video requires avconv or ffmpeg and is therefor
372			// currently not supported on Windows.
373			if (\in_array('OC\Preview\Movie', $this->getEnabledDefaultProvider())) {
374			// AtomicParsley would actually work under Windows.
375			$avconvBinary = \OC_Helper::findBinaryPath('avconv');
376			$ffmpegBinary = ($avconvBinary) ? null : \OC_Helper::findBinaryPath('ffmpeg');
377			$atomicParsleyBinary = \OC_Helper::findBinaryPath('AtomicParsley');
378
379			// FIXME // a bit hacky but didn't want to use subclasses
380			$registerProvider = false;
381			if ($avconvBinary !== null) {
382			\OC\Preview\Movie::$avconvBinary = $avconvBinary;
383			$registerProvider = true;
384			}
385			if ($ffmpegBinary !== null) {
386			\OC\Preview\Movie::$ffmpegBinary = $ffmpegBinary;
387			$registerProvider = true;
388			}
389			if ($atomicParsleyBinary !== null) {
390			\OC\Preview\Movie::$atomicParsleyBinary = $atomicParsleyBinary;
391			$registerProvider = true;
392			}
393			if ($registerProvider === true) {
394			$this->registerCoreProvider('\OC\Preview\Movie', '/video\/.*/');
395			}
396			}
397			}
398			}
399

owncloud / core

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PreviewManager::getEnabledDefaultProvider() B

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