DependencyAnalyzer::getMaxVersion() - Code Metrics - Inspection of "Merge pull request #14578 from nextcloud/enh/force..." - nextcloud/server - Measure and Improve Code Quality continuously with Scrutinizer

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Push — master ( b72d27...03dc79 )

by Roeland

created 2019-03-20 18:22 UTC

DependencyAnalyzer::getMaxVersion() A

↳ Parent: DependencyAnalyzer

Complexity

Conditions	4
Paths	4

Size

Total Lines	12
Code Lines	7

Duplication

Lines	0
Ratio	0 %

Importance

Changes

Metric	Value
cc	4
eloc	7
nc	4
nop	2
dl	0
loc	12
rs	10
c	0
b	0
f	0

<?php
/**
 * @copyright Copyright (c) 2016, ownCloud, Inc.
 * @copyright Copyright (c) 2016, Lukas Reschke <[email protected]>
 *
 * @author Bernhard Posselt <[email protected]>
 * @author Joas Schilling <[email protected]>
 * @author Lukas Reschke <[email protected]>
 * @author Morris Jobke <[email protected]>
 * @author Roeland Jago Douma <[email protected]>
 * @author Stefan Weil <[email protected]>
 * @author Thomas Müller <[email protected]>
 *
 * @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\App;

use OCP\IConfig;
use OCP\IL10N;

class DependencyAnalyzer {

	/** @var Platform */
	private $platform;
	/** @var \OCP\IL10N */
	private $l;
	/** @var array */
	private $appInfo;

	/**
	 * @param Platform $platform
	 * @param \OCP\IL10N $l
	 */
	public function __construct(Platform $platform, IL10N $l) {
		$this->platform = $platform;
		$this->l = $l;
	}

	/**
	 * @param array $app
	 * @returns array of missing dependencies
	 */
	public function analyze(array $app, bool $ignoreMax = false) {
		$this->appInfo = $app;
		if (isset($app['dependencies'])) {
			$dependencies = $app['dependencies'];
		} else {
			$dependencies = [];
		}

		return array_merge(
			$this->analyzePhpVersion($dependencies),
			$this->analyzeDatabases($dependencies),
			$this->analyzeCommands($dependencies),
			$this->analyzeLibraries($dependencies),
			$this->analyzeOS($dependencies),
			$this->analyzeOC($dependencies, $app, $ignoreMax)
		);
	}

	public function isMarkedCompatible(array $app): bool {
		if (isset($app['dependencies'])) {
			$dependencies = $app['dependencies'];
		} else {
			$dependencies = [];
		}

		$maxVersion = $this->getMaxVersion($dependencies, $app);
		if ($maxVersion === null) {
			return true;
		}
		return !$this->compareBigger($this->platform->getOcVersion(), $maxVersion);
	}

	/**
	 * Truncates both versions to the lowest common version, e.g.
	 * 5.1.2.3 and 5.1 will be turned into 5.1 and 5.1,
	 * 5.2.6.5 and 5.1 will be turned into 5.2 and 5.1
	 * @param string $first
	 * @param string $second
	 * @return string[] first element is the first version, second element is the
	 * second version
	 */
	private function normalizeVersions($first, $second) {
		$first = explode('.', $first);
		$second = explode('.', $second);

		// get both arrays to the same minimum size
		$length = min(count($second), count($first));
		$first = array_slice($first, 0, $length);
		$second = array_slice($second, 0, $length);

		return [implode('.', $first), implode('.', $second)];
	}

	/**
	 * Parameters will be normalized and then passed into version_compare
	 * in the same order they are specified in the method header
	 * @param string $first
	 * @param string $second
	 * @param string $operator
	 * @return bool result similar to version_compare
	 */
	private function compare($first, $second, $operator) {
		// we can't normalize versions if one of the given parameters is not a
		// version string but null. In case one parameter is null normalization
		// will therefore be skipped
		if ($first !== null && $second !== null) {

			list($first, $second) = $this->normalizeVersions($first, $second);
		}

		return version_compare($first, $second, $operator);
	}

	/**
	 * Checks if a version is bigger than another version
	 * @param string $first
	 * @param string $second
	 * @return bool true if the first version is bigger than the second
	 */
	private function compareBigger($first, $second) {
		return $this->compare($first, $second, '>');
	}

	/**
	 * Checks if a version is smaller than another version
	 * @param string $first
	 * @param string $second
	 * @return bool true if the first version is smaller than the second
	 */
	private function compareSmaller($first, $second) {
		return $this->compare($first, $second, '<');
	}

	/**
	 * @param array $dependencies
	 * @return array
	 */
	private function analyzePhpVersion(array $dependencies) {
		$missing = [];
		if (isset($dependencies['php']['@attributes']['min-version'])) {
			$minVersion = $dependencies['php']['@attributes']['min-version'];
			if ($this->compareSmaller($this->platform->getPhpVersion(), $minVersion)) {
				$missing[] = (string)$this->l->t('PHP %s or higher is required.', [$minVersion]);
			}
		}
		if (isset($dependencies['php']['@attributes']['max-version'])) {
			$maxVersion = $dependencies['php']['@attributes']['max-version'];
			if ($this->compareBigger($this->platform->getPhpVersion(), $maxVersion)) {
				$missing[] = (string)$this->l->t('PHP with a version lower than %s is required.', [$maxVersion]);
			}
		}
		if (isset($dependencies['php']['@attributes']['min-int-size'])) {
			$intSize = $dependencies['php']['@attributes']['min-int-size'];
			if ($intSize > $this->platform->getIntSize()*8) {
				$missing[] = (string)$this->l->t('%sbit or higher PHP required.', [$intSize]);
			}
		}
		return $missing;
	}

	/**
	 * @param array $dependencies
	 * @return array
	 */
	private function analyzeDatabases(array $dependencies) {
		$missing = [];
		if (!isset($dependencies['database'])) {
			return $missing;
		}

		$supportedDatabases = $dependencies['database'];
		if (empty($supportedDatabases)) {
			return $missing;
		}
		if (!is_array($supportedDatabases)) {
			$supportedDatabases = array($supportedDatabases);
		}
		$supportedDatabases = array_map(function ($db) {
			return $this->getValue($db);
		}, $supportedDatabases);
		$currentDatabase = $this->platform->getDatabase();
		if (!in_array($currentDatabase, $supportedDatabases)) {
			$missing[] = (string)$this->l->t('Following databases are supported: %s', [implode(', ', $supportedDatabases)]);
		}
		return $missing;
	}

	/**
	 * @param array $dependencies
	 * @return array
	 */
	private function analyzeCommands(array $dependencies) {
		$missing = [];
		if (!isset($dependencies['command'])) {
			return $missing;
		}

		$commands = $dependencies['command'];
		if (!is_array($commands)) {
			$commands = array($commands);
		}
		if (isset($commands['@value'])) {
			$commands = [$commands];
		}
		$os = $this->platform->getOS();
		foreach ($commands as $command) {
			if (isset($command['@attributes']['os']) && $command['@attributes']['os'] !== $os) {
				continue;
			}
			$commandName = $this->getValue($command);
			if (!$this->platform->isCommandKnown($commandName)) {
				$missing[] = (string)$this->l->t('The command line tool %s could not be found', [$commandName]);
			}
		}
		return $missing;
	}

	/**
	 * @param array $dependencies
	 * @return array
	 */
	private function analyzeLibraries(array $dependencies) {
		$missing = [];
		if (!isset($dependencies['lib'])) {
			return $missing;
		}

		$libs = $dependencies['lib'];
		if (!is_array($libs)) {
			$libs = array($libs);
		}
		if (isset($libs['@value'])) {
			$libs = [$libs];
		}
		foreach ($libs as $lib) {
			$libName = $this->getValue($lib);
			$libVersion = $this->platform->getLibraryVersion($libName);
			if (is_null($libVersion)) {
				$missing[] = $this->l->t('The library %s is not available.', [$libName]);
				continue;
			}

			if (is_array($lib)) {
				if (isset($lib['@attributes']['min-version'])) {
					$minVersion = $lib['@attributes']['min-version'];
					if ($this->compareSmaller($libVersion, $minVersion)) {
						$missing[] = $this->l->t('Library %1$s with a version higher than %2$s is required - available version %3$s.',
							[$libName, $minVersion, $libVersion]);
					}
				}
				if (isset($lib['@attributes']['max-version'])) {
					$maxVersion = $lib['@attributes']['max-version'];
					if ($this->compareBigger($libVersion, $maxVersion)) {
						$missing[] = $this->l->t('Library %1$s with a version lower than %2$s is required - available version %3$s.',
							[$libName, $maxVersion, $libVersion]);
					}
				}
			}
		}
		return $missing;
	}

	/**
	 * @param array $dependencies
	 * @return array
	 */
	private function analyzeOS(array $dependencies) {
		$missing = [];
		if (!isset($dependencies['os'])) {
			return $missing;
		}

		$oss = $dependencies['os'];
		if (empty($oss)) {
			return $missing;
		}
		if (is_array($oss)) {
			$oss = array_map(function ($os) {
				return $this->getValue($os);
			}, $oss);
		} else {
			$oss = array($oss);
		}
		$currentOS = $this->platform->getOS();
		if (!in_array($currentOS, $oss)) {
			$missing[] = (string)$this->l->t('Following platforms are supported: %s', [implode(', ', $oss)]);
		}
		return $missing;
	}

	/**
	 * @param array $dependencies
	 * @param array $appInfo
	 * @return array
	 */
	private function analyzeOC(array $dependencies, array $appInfo, bool $ignoreMax) {
		$missing = [];
		$minVersion = null;
		if (isset($dependencies['nextcloud']['@attributes']['min-version'])) {
			$minVersion = $dependencies['nextcloud']['@attributes']['min-version'];
		} elseif (isset($dependencies['owncloud']['@attributes']['min-version'])) {
			$minVersion = $dependencies['owncloud']['@attributes']['min-version'];
		} elseif (isset($appInfo['requiremin'])) {
			$minVersion = $appInfo['requiremin'];
		} elseif (isset($appInfo['require'])) {
			$minVersion = $appInfo['require'];
		}
		$maxVersion = $this->getMaxVersion($dependencies, $appInfo);

		if (!is_null($minVersion)) {
			if ($this->compareSmaller($this->platform->getOcVersion(), $minVersion)) {
				$missing[] = (string)$this->l->t('Server version %s or higher is required.', [$this->toVisibleVersion($minVersion)]);
			}
		}
		if (!$ignoreMax && !is_null($maxVersion)) {
			if ($this->compareBigger($this->platform->getOcVersion(), $maxVersion)) {
				$missing[] = (string)$this->l->t('Server version %s or lower is required.', [$this->toVisibleVersion($maxVersion)]);
			}
		}
		return $missing;
	}

	private function getMaxVersion(array $dependencies, array $appInfo): ?string {
		if (isset($dependencies['nextcloud']['@attributes']['max-version'])) {
			return $dependencies['nextcloud']['@attributes']['max-version'];
		}
		if (isset($dependencies['owncloud']['@attributes']['max-version'])) {
			return $dependencies['owncloud']['@attributes']['max-version'];
		}
		if (isset($appInfo['requiremax'])) {
			return $appInfo['requiremax'];
		}

		return null;
	}

	/**
	 * Map the internal version number to the Nextcloud version
	 *
	 * @param string $version
	 * @return string
	 */
	protected function toVisibleVersion($version) {
		switch ($version) {
			case '9.1':
				return '10';
			default:
				if (strpos($version, '9.1.') === 0) {
					$version = '10.0.' . substr($version, 4);
				}
				return $version;
		}
	}

	/**
	 * @param $element
	 * @return mixed
	 */
	private function getValue($element) {
		if (isset($element['@value'])) {
			return $element['@value'];
		}
		return (string)$element;
	}
}


1			<?php
2			/**
3			* @copyright Copyright (c) 2016, ownCloud, Inc.
4			* @copyright Copyright (c) 2016, Lukas Reschke <[email protected]>
5			*
6			* @author Bernhard Posselt <[email protected]>
7			* @author Joas Schilling <[email protected]>
8			* @author Lukas Reschke <[email protected]>
9			* @author Morris Jobke <[email protected]>
10			* @author Roeland Jago Douma <[email protected]>
11			* @author Stefan Weil <[email protected]>
12			* @author Thomas Müller <[email protected]>
13			*
14			* @license AGPL-3.0
15			*
16			* This code is free software: you can redistribute it and/or modify
17			* it under the terms of the GNU Affero General Public License, version 3,
18			* as published by the Free Software Foundation.
19			*
20			* This program is distributed in the hope that it will be useful,
21			* but WITHOUT ANY WARRANTY; without even the implied warranty of
22			* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
23			* GNU Affero General Public License for more details.
24			*
25			* You should have received a copy of the GNU Affero General Public License, version 3,
26			* along with this program. If not, see <http://www.gnu.org/licenses/>
27			*
28			*/
29
30			namespace OC\App;
31
32			use OCP\IConfig;
33			use OCP\IL10N;
34
35			class DependencyAnalyzer {
36
37			/** @var Platform */
38			private $platform;
39			/** @var \OCP\IL10N */
40			private $l;
41			/** @var array */
42			private $appInfo;
43
44			/**
45			* @param Platform $platform
46			* @param \OCP\IL10N $l
47			*/
48			public function __construct(Platform $platform, IL10N $l) {
49			$this->platform = $platform;
50			$this->l = $l;
51			}
52
53			/**
54			* @param array $app
55			* @returns array of missing dependencies
56			*/
57			public function analyze(array $app, bool $ignoreMax = false) {
58			$this->appInfo = $app;
59			if (isset($app['dependencies'])) {
60			$dependencies = $app['dependencies'];
61			} else {
62			$dependencies = [];
63			}
64
65			return array_merge(
66			$this->analyzePhpVersion($dependencies),
67			$this->analyzeDatabases($dependencies),
68			$this->analyzeCommands($dependencies),
69			$this->analyzeLibraries($dependencies),
70			$this->analyzeOS($dependencies),
71			$this->analyzeOC($dependencies, $app, $ignoreMax)
72			);
73			}
74
75			public function isMarkedCompatible(array $app): bool {
76			if (isset($app['dependencies'])) {
77			$dependencies = $app['dependencies'];
78			} else {
79			$dependencies = [];
80			}
81
82			$maxVersion = $this->getMaxVersion($dependencies, $app);
83			if ($maxVersion === null) {
84			return true;
85			}
86			return !$this->compareBigger($this->platform->getOcVersion(), $maxVersion);
87			}
88
89			/**
90			* Truncates both versions to the lowest common version, e.g.
91			* 5.1.2.3 and 5.1 will be turned into 5.1 and 5.1,
92			* 5.2.6.5 and 5.1 will be turned into 5.2 and 5.1
93			* @param string $first
94			* @param string $second
95			* @return string[] first element is the first version, second element is the
96			* second version
97			*/
98			private function normalizeVersions($first, $second) {
99			$first = explode('.', $first);
100			$second = explode('.', $second);
101
102			// get both arrays to the same minimum size
103			$length = min(count($second), count($first));
104			$first = array_slice($first, 0, $length);
105			$second = array_slice($second, 0, $length);
106
107			return [implode('.', $first), implode('.', $second)];
108			}
109
110			/**
111			* Parameters will be normalized and then passed into version_compare
112			* in the same order they are specified in the method header
113			* @param string $first
114			* @param string $second
115			* @param string $operator
116			* @return bool result similar to version_compare
117			*/
118			private function compare($first, $second, $operator) {
119			// we can't normalize versions if one of the given parameters is not a
120			// version string but null. In case one parameter is null normalization
121			// will therefore be skipped
122			if ($first !== null && $second !== null) {
			0 ignored issues – show introduced 2018-10-24 12:40 UTC by Report Bug Copy Issue Report The condition `$second !== null` is always `true`. Loading history...
123			list($first, $second) = $this->normalizeVersions($first, $second);
124			}
125
126			return version_compare($first, $second, $operator);
127			}
128
129			/**
130			* Checks if a version is bigger than another version
131			* @param string $first
132			* @param string $second
133			* @return bool true if the first version is bigger than the second
134			*/
135			private function compareBigger($first, $second) {
136			return $this->compare($first, $second, '>');
137			}
138
139			/**
140			* Checks if a version is smaller than another version
141			* @param string $first
142			* @param string $second
143			* @return bool true if the first version is smaller than the second
144			*/
145			private function compareSmaller($first, $second) {
146			return $this->compare($first, $second, '<');
147			}
148
149			/**
150			* @param array $dependencies
151			* @return array
152			*/
153			private function analyzePhpVersion(array $dependencies) {
154			$missing = [];
155			if (isset($dependencies['php']['@attributes']['min-version'])) {
156			$minVersion = $dependencies['php']['@attributes']['min-version'];
157			if ($this->compareSmaller($this->platform->getPhpVersion(), $minVersion)) {
158			$missing[] = (string)$this->l->t('PHP %s or higher is required.', [$minVersion]);
159			}
160			}
161			if (isset($dependencies['php']['@attributes']['max-version'])) {
162			$maxVersion = $dependencies['php']['@attributes']['max-version'];
163			if ($this->compareBigger($this->platform->getPhpVersion(), $maxVersion)) {
164			$missing[] = (string)$this->l->t('PHP with a version lower than %s is required.', [$maxVersion]);
165			}
166			}
167			if (isset($dependencies['php']['@attributes']['min-int-size'])) {
168			$intSize = $dependencies['php']['@attributes']['min-int-size'];
169			if ($intSize > $this->platform->getIntSize()*8) {
170			$missing[] = (string)$this->l->t('%sbit or higher PHP required.', [$intSize]);
171			}
172			}
173			return $missing;
174			}
175
176			/**
177			* @param array $dependencies
178			* @return array
179			*/
180			private function analyzeDatabases(array $dependencies) {
181			$missing = [];
182			if (!isset($dependencies['database'])) {
183			return $missing;
184			}
185
186			$supportedDatabases = $dependencies['database'];
187			if (empty($supportedDatabases)) {
188			return $missing;
189			}
190			if (!is_array($supportedDatabases)) {
191			$supportedDatabases = array($supportedDatabases);
192			}
193			$supportedDatabases = array_map(function ($db) {
194			return $this->getValue($db);
195			}, $supportedDatabases);
196			$currentDatabase = $this->platform->getDatabase();
197			if (!in_array($currentDatabase, $supportedDatabases)) {
198			$missing[] = (string)$this->l->t('Following databases are supported: %s', [implode(', ', $supportedDatabases)]);
199			}
200			return $missing;
201			}
202
203			/**
204			* @param array $dependencies
205			* @return array
206			*/
207			private function analyzeCommands(array $dependencies) {
208			$missing = [];
209			if (!isset($dependencies['command'])) {
210			return $missing;
211			}
212
213			$commands = $dependencies['command'];
214			if (!is_array($commands)) {
215			$commands = array($commands);
216			}
217			if (isset($commands['@value'])) {
218			$commands = [$commands];
219			}
220			$os = $this->platform->getOS();
221			foreach ($commands as $command) {
222			if (isset($command['@attributes']['os']) && $command['@attributes']['os'] !== $os) {
223			continue;
224			}
225			$commandName = $this->getValue($command);
226			if (!$this->platform->isCommandKnown($commandName)) {
227			$missing[] = (string)$this->l->t('The command line tool %s could not be found', [$commandName]);
228			}
229			}
230			return $missing;
231			}
232
233			/**
234			* @param array $dependencies
235			* @return array
236			*/
237			private function analyzeLibraries(array $dependencies) {
238			$missing = [];
239			if (!isset($dependencies['lib'])) {
240			return $missing;
241			}
242
243			$libs = $dependencies['lib'];
244			if (!is_array($libs)) {
245			$libs = array($libs);
246			}
247			if (isset($libs['@value'])) {
248			$libs = [$libs];
249			}
250			foreach ($libs as $lib) {
251			$libName = $this->getValue($lib);
252			$libVersion = $this->platform->getLibraryVersion($libName);
253			if (is_null($libVersion)) {
254			$missing[] = $this->l->t('The library %s is not available.', [$libName]);
255			continue;
256			}
257
258			if (is_array($lib)) {
259			if (isset($lib['@attributes']['min-version'])) {
260			$minVersion = $lib['@attributes']['min-version'];
261			if ($this->compareSmaller($libVersion, $minVersion)) {
262			$missing[] = $this->l->t('Library %1$s with a version higher than %2$s is required - available version %3$s.',
263			[$libName, $minVersion, $libVersion]);
264			}
265			}
266			if (isset($lib['@attributes']['max-version'])) {
267			$maxVersion = $lib['@attributes']['max-version'];
268			if ($this->compareBigger($libVersion, $maxVersion)) {
269			$missing[] = $this->l->t('Library %1$s with a version lower than %2$s is required - available version %3$s.',
270			[$libName, $maxVersion, $libVersion]);
271			}
272			}
273			}
274			}
275			return $missing;
276			}
277
278			/**
279			* @param array $dependencies
280			* @return array
281			*/
282			private function analyzeOS(array $dependencies) {
283			$missing = [];
284			if (!isset($dependencies['os'])) {
285			return $missing;
286			}
287
288			$oss = $dependencies['os'];
289			if (empty($oss)) {
290			return $missing;
291			}
292			if (is_array($oss)) {
293			$oss = array_map(function ($os) {
294			return $this->getValue($os);
295			}, $oss);
296			} else {
297			$oss = array($oss);
298			}
299			$currentOS = $this->platform->getOS();
300			if (!in_array($currentOS, $oss)) {
301			$missing[] = (string)$this->l->t('Following platforms are supported: %s', [implode(', ', $oss)]);
302			}
303			return $missing;
304			}
305
306			/**
307			* @param array $dependencies
308			* @param array $appInfo
309			* @return array
310			*/
311			private function analyzeOC(array $dependencies, array $appInfo, bool $ignoreMax) {
312			$missing = [];
313			$minVersion = null;
314			if (isset($dependencies['nextcloud']['@attributes']['min-version'])) {
315			$minVersion = $dependencies['nextcloud']['@attributes']['min-version'];
316			} elseif (isset($dependencies['owncloud']['@attributes']['min-version'])) {
317			$minVersion = $dependencies['owncloud']['@attributes']['min-version'];
318			} elseif (isset($appInfo['requiremin'])) {
319			$minVersion = $appInfo['requiremin'];
320			} elseif (isset($appInfo['require'])) {
321			$minVersion = $appInfo['require'];
322			}
323			$maxVersion = $this->getMaxVersion($dependencies, $appInfo);
324
325			if (!is_null($minVersion)) {
326			if ($this->compareSmaller($this->platform->getOcVersion(), $minVersion)) {
327			$missing[] = (string)$this->l->t('Server version %s or higher is required.', [$this->toVisibleVersion($minVersion)]);
328			}
329			}
330			if (!$ignoreMax && !is_null($maxVersion)) {
331			if ($this->compareBigger($this->platform->getOcVersion(), $maxVersion)) {
332			$missing[] = (string)$this->l->t('Server version %s or lower is required.', [$this->toVisibleVersion($maxVersion)]);
333			}
334			}
335			return $missing;
336			}
337
338			private function getMaxVersion(array $dependencies, array $appInfo): ?string {
339			if (isset($dependencies['nextcloud']['@attributes']['max-version'])) {
340			return $dependencies['nextcloud']['@attributes']['max-version'];
341			}
342			if (isset($dependencies['owncloud']['@attributes']['max-version'])) {
343			return $dependencies['owncloud']['@attributes']['max-version'];
344			}
345			if (isset($appInfo['requiremax'])) {
346			return $appInfo['requiremax'];
347			}
348
349			return null;
350			}
351
352			/**
353			* Map the internal version number to the Nextcloud version
354			*
355			* @param string $version
356			* @return string
357			*/
358			protected function toVisibleVersion($version) {
359			switch ($version) {
360			case '9.1':
361			return '10';
362			default:
363			if (strpos($version, '9.1.') === 0) {
364			$version = '10.0.' . substr($version, 4);
365			}
366			return $version;
367			}
368			}
369
370			/**
371			* @param $element
372			* @return mixed
373			*/
374			private function getValue($element) {
375			if (isset($element['@value'])) {
376			return $element['@value'];
377			}
378			return (string)$element;
379			}
380			}
381

nextcloud / server

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DependencyAnalyzer::getMaxVersion() A

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