PucFactory::getThemeDirectoryName() - Code Metrics - Inspection of "created release directory for plugin and theme" - iqltechnologies/brighty - Measure and Improve Code Quality continuously with Scrutinizer

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by TARIQ

created 2023-05-04 19:09 UTC

PucFactory::getThemeDirectoryName() A

↳ Parent: PucFactory

Complexity

Conditions	3
Paths	4

Size

Total Lines	9
Code Lines	5

Duplication

Lines	0
Ratio	0 %

Importance

Changes	1
Bugs	0	Features	0

Metric	Value
cc	3
eloc	5
c	1
b	0
f	0
nc	4
nop	1
dl	0
loc	9
rs	10

<?php

namespace YahnisElsts\PluginUpdateChecker\v5p0;

use YahnisElsts\PluginUpdateChecker\v5p0\Plugin;
use YahnisElsts\PluginUpdateChecker\v5p0\Theme;
use YahnisElsts\PluginUpdateChecker\v5p0\Vcs;

if ( !class_exists(PucFactory::class, false) ):

	/**
	 * A factory that builds update checker instances.
	 *
	 * When multiple versions of the same class have been loaded (e.g. PluginUpdateChecker 4.0
	 * and 4.1), this factory will always use the latest available minor version. Register class
	 * versions by calling {@link PucFactory::addVersion()}.
	 *
	 * At the moment it can only build instances of the UpdateChecker class. Other classes are
	 * intended mainly for internal use and refer directly to specific implementations.
	 */
	class PucFactory {
		protected static $classVersions = array();
		protected static $sorted = false;

		protected static $myMajorVersion = '';
		protected static $latestCompatibleVersion = '';

		/**
		 * A wrapper method for buildUpdateChecker() that reads the metadata URL from the plugin or theme header.
		 *
		 * @param string $fullPath Full path to the main plugin file or the theme's style.css.
		 * @param array $args Optional arguments. Keys should match the argument names of the buildUpdateChecker() method.
		 * @return Plugin\UpdateChecker|Theme\UpdateChecker|Vcs\BaseChecker
		 */
		public static function buildFromHeader($fullPath, $args = array()) {
			$fullPath = self::normalizePath($fullPath);

			//Set up defaults.
			$defaults = array(
				'metadataUrl'  => '',
				'slug'         => '',
				'checkPeriod'  => 12,
				'optionName'   => '',
				'muPluginFile' => '',
			);
			$args = array_merge($defaults, array_intersect_key($args, $defaults));
			extract($args, EXTR_SKIP);

			//Check for the service URI
			if ( empty($metadataUrl) ) {
				$metadataUrl = self::getServiceURI($fullPath);
			}

			return self::buildUpdateChecker($metadataUrl, $fullPath, $slug, $checkPeriod, $optionName, $muPluginFile);
		}

		/**
		 * Create a new instance of the update checker.
		 *
		 * This method automatically detects if you're using it for a plugin or a theme and chooses
		 * the appropriate implementation for your update source (JSON file, GitHub, BitBucket, etc).
		 *
		 * @see UpdateChecker::__construct
		 *
		 * @param string $metadataUrl The URL of the metadata file, a GitHub repository, or another supported update source.
		 * @param string $fullPath Full path to the main plugin file or to the theme directory.
		 * @param string $slug Custom slug. Defaults to the name of the main plugin file or the theme directory.
		 * @param int $checkPeriod How often to check for updates (in hours).
		 * @param string $optionName Where to store bookkeeping info about update checks.
		 * @param string $muPluginFile The plugin filename relative to the mu-plugins directory.
		 * @return Plugin\UpdateChecker|Theme\UpdateChecker|Vcs\BaseChecker
		 */
		public static function buildUpdateChecker($metadataUrl, $fullPath, $slug = '', $checkPeriod = 12, $optionName = '', $muPluginFile = '') {
			$fullPath = self::normalizePath($fullPath);
			$id = null;

			//Plugin or theme?
			$themeDirectory = self::getThemeDirectoryName($fullPath);
			if ( self::isPluginFile($fullPath) ) {
				$type = 'Plugin';
				$id = $fullPath;
			} else if ( $themeDirectory !== null ) {
				$type = 'Theme';
				$id = $themeDirectory;
			} else {
				throw new \RuntimeException(sprintf(
					'The update checker cannot determine if "%s" is a plugin or a theme. ' .
					'This is a bug. Please contact the PUC developer.',
					htmlentities($fullPath)
				));
			}

			//Which hosting service does the URL point to?
			$service = self::getVcsService($metadataUrl);

			$apiClass = null;
			if ( empty($service) ) {
				//The default is to get update information from a remote JSON file.
				$checkerClass = $type . '\\UpdateChecker';
			} else {
				//You can also use a VCS repository like GitHub.
				$checkerClass = 'Vcs\\' . $type . 'UpdateChecker';
				$apiClass = $service . 'Api';
			}

			$checkerClass = self::getCompatibleClassVersion($checkerClass);
			if ( $checkerClass === null ) {
				//phpcs:ignore WordPress.PHP.DevelopmentFunctions.error_log_trigger_error
				trigger_error(
					esc_html(sprintf(
						'PUC %s does not support updates for %ss %s',
						self::$latestCompatibleVersion,
						strtolower($type),
						$service ? ('hosted on ' . $service) : 'using JSON metadata'
					)),
					E_USER_ERROR
				);
			}

			if ( !isset($apiClass) ) {
				//Plain old update checker.
				return new $checkerClass($metadataUrl, $id, $slug, $checkPeriod, $optionName, $muPluginFile);
			} else {
				//VCS checker + an API client.
				$apiClass = self::getCompatibleClassVersion($apiClass);
				if ( $apiClass === null ) {
					//phpcs:ignore WordPress.PHP.DevelopmentFunctions.error_log_trigger_error
					trigger_error(esc_html(sprintf(
						'PUC %s does not support %s',
						self::$latestCompatibleVersion,
						$service
					)), E_USER_ERROR);
				}

				return new $checkerClass(
					new $apiClass($metadataUrl),
					$id,
					$slug,
					$checkPeriod,
					$optionName,
					$muPluginFile
				);
			}
		}

		/**
		 *
		 * Normalize a filesystem path. Introduced in WP 3.9.
		 * Copying here allows use of the class on earlier versions.
		 * This version adapted from WP 4.8.2 (unchanged since 4.5.0)
		 *
		 * @param string $path Path to normalize.
		 * @return string Normalized path.
		 */
		public static function normalizePath($path) {
			if ( function_exists('wp_normalize_path') ) {
				return wp_normalize_path($path);
			}
			$path = str_replace('\\', '/', $path);
			$path = preg_replace('|(?<=.)/+|', '/', $path);
			if ( substr($path, 1, 1) === ':' ) {
				$path = ucfirst($path);
			}
			return $path;
		}

		/**
		 * Check if the path points to a plugin file.
		 *
		 * @param string $absolutePath Normalized path.
		 * @return bool
		 */
		protected static function isPluginFile($absolutePath) {
			//Is the file inside the "plugins" or "mu-plugins" directory?
			$pluginDir = self::normalizePath(WP_PLUGIN_DIR);
			$muPluginDir = self::normalizePath(WPMU_PLUGIN_DIR);
			if ( (strpos($absolutePath, $pluginDir) === 0) || (strpos($absolutePath, $muPluginDir) === 0) ) {
				return true;
			}

			//Is it a file at all? Caution: is_file() can fail if the parent dir. doesn't have the +x permission set.
			if ( !is_file($absolutePath) ) {
				return false;
			}

			//Does it have a valid plugin header?
			//This is a last-ditch check for plugins symlinked from outside the WP root.
			if ( function_exists('get_file_data') ) {
				$headers = get_file_data($absolutePath, array('Name' => 'Plugin Name'), 'plugin');
				return !empty($headers['Name']);
			}

			return false;
		}

		/**
		 * Get the name of the theme's directory from a full path to a file inside that directory.
		 * E.g. "/abc/public_html/wp-content/themes/foo/whatever.php" => "foo".
		 *
		 * Note that subdirectories are currently not supported. For example,
		 * "/xyz/wp-content/themes/my-theme/includes/whatever.php" => NULL.
		 *
		 * @param string $absolutePath Normalized path.
		 * @return string|null Directory name, or NULL if the path doesn't point to a theme.
		 */
		protected static function getThemeDirectoryName($absolutePath) {
			if ( is_file($absolutePath) ) {
				$absolutePath = dirname($absolutePath);
			}

			if ( file_exists($absolutePath . '/style.css') ) {
				return basename($absolutePath);
			}
			return null;
		}

		/**
		 * Get the service URI from the file header.
		 *
		 * @param string $fullPath
		 * @return string
		 */
		private static function getServiceURI($fullPath) {
			//Look for the URI
			if ( is_readable($fullPath) ) {
				$seek = array(
					'github' => 'GitHub URI',
					'gitlab' => 'GitLab URI',
					'bucket' => 'BitBucket URI',
				);
				$seek = apply_filters('puc_get_source_uri', $seek);
				$data = get_file_data($fullPath, $seek);
				foreach ($data as $key => $uri) {
					if ( $uri ) {
						return $uri;
					}
				}
			}

			//URI was not found so throw an error.
			throw new \RuntimeException(
				sprintf('Unable to locate URI in header of "%s"', htmlentities($fullPath))
			);
		}

		/**
		 * Get the name of the hosting service that the URL points to.
		 *
		 * @param string $metadataUrl
		 * @return string|null
		 */
		private static function getVcsService($metadataUrl) {
			$service = null;

			//Which hosting service does the URL point to?
			$host = (string)(wp_parse_url($metadataUrl, PHP_URL_HOST));
			$path = (string)(wp_parse_url($metadataUrl, PHP_URL_PATH));

			//Check if the path looks like "/user-name/repository".
			//For GitLab.com it can also be "/user/group1/group2/.../repository".
			$repoRegex = '@^/?([^/]+?)/([^/#?&]+?)/?$@';
			if ( $host === 'gitlab.com' ) {
				$repoRegex = '@^/?(?:[^/#?&]++/){1,20}(?:[^/#?&]++)/?$@';
			}
			if ( preg_match($repoRegex, $path) ) {
				$knownServices = array(
					'github.com' => 'GitHub',
					'bitbucket.org' => 'BitBucket',
					'gitlab.com' => 'GitLab',
				);
				if ( isset($knownServices[$host]) ) {
					$service = $knownServices[$host];
				}
			}

			return apply_filters('puc_get_vcs_service', $service, $host, $path, $metadataUrl);
		}

		/**
		 * Get the latest version of the specified class that has the same major version number
		 * as this factory class.
		 *
		 * @param string $class Partial class name.
		 * @return string|null Full class name.
		 */
		protected static function getCompatibleClassVersion($class) {
			if ( isset(self::$classVersions[$class][self::$latestCompatibleVersion]) ) {
				return self::$classVersions[$class][self::$latestCompatibleVersion];
			}
			return null;
		}

		/**
		 * Get the specific class name for the latest available version of a class.
		 *
		 * @param string $class
		 * @return null|string
		 */
		public static function getLatestClassVersion($class) {
			if ( !self::$sorted ) {
				self::sortVersions();
			}

			if ( isset(self::$classVersions[$class]) ) {
				return reset(self::$classVersions[$class]);
			} else {
				return null;
			}
		}

		/**
		 * Sort available class versions in descending order (i.e. newest first).
		 */
		protected static function sortVersions() {
			foreach ( self::$classVersions as $class => $versions ) {
				uksort($versions, array(__CLASS__, 'compareVersions'));
				self::$classVersions[$class] = $versions;
			}
			self::$sorted = true;
		}

		protected static function compareVersions($a, $b) {
			return -version_compare($a, $b);
		}

		/**
		 * Register a version of a class.
		 *
		 * @access private This method is only for internal use by the library.
		 *
		 * @param string $generalClass Class name without version numbers, e.g. 'PluginUpdateChecker'.
		 * @param string $versionedClass Actual class name, e.g. 'PluginUpdateChecker_1_2'.
		 * @param string $version Version number, e.g. '1.2'.
		 */
		public static function addVersion($generalClass, $versionedClass, $version) {
			if ( empty(self::$myMajorVersion) ) {
				$lastNamespaceSegment = substr(__NAMESPACE__, strrpos(__NAMESPACE__, '\\') + 1);
				self::$myMajorVersion = substr(ltrim($lastNamespaceSegment, 'v'), 0, 1);
			}

			//Store the greatest version number that matches our major version.
			$components = explode('.', $version);
			if ( $components[0] === self::$myMajorVersion ) {

				if (
					empty(self::$latestCompatibleVersion)
					|| version_compare($version, self::$latestCompatibleVersion, '>')
				) {
					self::$latestCompatibleVersion = $version;
				}

			}

			if ( !isset(self::$classVersions[$generalClass]) ) {
				self::$classVersions[$generalClass] = array();
			}
			self::$classVersions[$generalClass][$version] = $versionedClass;
			self::$sorted = false;
		}
	}

endif;


1			<?php
2
3			namespace YahnisElsts\PluginUpdateChecker\v5p0;
4
5			use YahnisElsts\PluginUpdateChecker\v5p0\Plugin;
6			use YahnisElsts\PluginUpdateChecker\v5p0\Theme;
7			use YahnisElsts\PluginUpdateChecker\v5p0\Vcs;
8
9			if ( !class_exists(PucFactory::class, false) ):
10
11			/**
12			* A factory that builds update checker instances.
13			*
14			* When multiple versions of the same class have been loaded (e.g. PluginUpdateChecker 4.0
15			* and 4.1), this factory will always use the latest available minor version. Register class
16			* versions by calling {@link PucFactory::addVersion()}.
17			*
18			* At the moment it can only build instances of the UpdateChecker class. Other classes are
19			* intended mainly for internal use and refer directly to specific implementations.
20			*/
21			class PucFactory {
22			protected static $classVersions = array();
23			protected static $sorted = false;
24
25			protected static $myMajorVersion = '';
26			protected static $latestCompatibleVersion = '';
27
28			/**
29			* A wrapper method for buildUpdateChecker() that reads the metadata URL from the plugin or theme header.
30			*
31			* @param string $fullPath Full path to the main plugin file or the theme's style.css.
32			* @param array $args Optional arguments. Keys should match the argument names of the buildUpdateChecker() method.
33			* @return Plugin\UpdateChecker\|Theme\UpdateChecker\|Vcs\BaseChecker
34			*/
35			public static function buildFromHeader($fullPath, $args = array()) {
36			$fullPath = self::normalizePath($fullPath);
37
38			//Set up defaults.
39			$defaults = array(
40			'metadataUrl' => '',
41			'slug' => '',
42			'checkPeriod' => 12,
43			'optionName' => '',
44			'muPluginFile' => '',
45			);
46			$args = array_merge($defaults, array_intersect_key($args, $defaults));
47			extract($args, EXTR_SKIP);
48
49			//Check for the service URI
50			if ( empty($metadataUrl) ) {
51			$metadataUrl = self::getServiceURI($fullPath);
52			}
53
54			return self::buildUpdateChecker($metadataUrl, $fullPath, $slug, $checkPeriod, $optionName, $muPluginFile);
55			}
56
57			/**
58			* Create a new instance of the update checker.
59			*
60			* This method automatically detects if you're using it for a plugin or a theme and chooses
61			* the appropriate implementation for your update source (JSON file, GitHub, BitBucket, etc).
62			*
63			* @see UpdateChecker::__construct
64			*
65			* @param string $metadataUrl The URL of the metadata file, a GitHub repository, or another supported update source.
66			* @param string $fullPath Full path to the main plugin file or to the theme directory.
67			* @param string $slug Custom slug. Defaults to the name of the main plugin file or the theme directory.
68			* @param int $checkPeriod How often to check for updates (in hours).
69			* @param string $optionName Where to store bookkeeping info about update checks.
70			* @param string $muPluginFile The plugin filename relative to the mu-plugins directory.
71			* @return Plugin\UpdateChecker\|Theme\UpdateChecker\|Vcs\BaseChecker
72			*/
73			public static function buildUpdateChecker($metadataUrl, $fullPath, $slug = '', $checkPeriod = 12, $optionName = '', $muPluginFile = '') {
74			$fullPath = self::normalizePath($fullPath);
75			$id = null;
76
77			//Plugin or theme?
78			$themeDirectory = self::getThemeDirectoryName($fullPath);
79			if ( self::isPluginFile($fullPath) ) {
80			$type = 'Plugin';
81			$id = $fullPath;
82			} else if ( $themeDirectory !== null ) {
83			$type = 'Theme';
84			$id = $themeDirectory;
85			} else {
86			throw new \RuntimeException(sprintf(
87			'The update checker cannot determine if "%s" is a plugin or a theme. ' .
88			'This is a bug. Please contact the PUC developer.',
89			htmlentities($fullPath)
90			));
91			}
92
93			//Which hosting service does the URL point to?
94			$service = self::getVcsService($metadataUrl);
95
96			$apiClass = null;
97			if ( empty($service) ) {
98			//The default is to get update information from a remote JSON file.
99			$checkerClass = $type . '\\UpdateChecker';
100			} else {
101			//You can also use a VCS repository like GitHub.
102			$checkerClass = 'Vcs\\' . $type . 'UpdateChecker';
103			$apiClass = $service . 'Api';
104			}
105
106			$checkerClass = self::getCompatibleClassVersion($checkerClass);
107			if ( $checkerClass === null ) {
108			//phpcs:ignore WordPress.PHP.DevelopmentFunctions.error_log_trigger_error
109			trigger_error(
110			esc_html(sprintf(
111			'PUC %s does not support updates for %ss %s',
112			self::$latestCompatibleVersion,
113			strtolower($type),
114			$service ? ('hosted on ' . $service) : 'using JSON metadata'
115			)),
116			E_USER_ERROR
117			);
118			}
119
120			if ( !isset($apiClass) ) {
121			//Plain old update checker.
122			return new $checkerClass($metadataUrl, $id, $slug, $checkPeriod, $optionName, $muPluginFile);
123			} else {
124			//VCS checker + an API client.
125			$apiClass = self::getCompatibleClassVersion($apiClass);
126			if ( $apiClass === null ) {
127			//phpcs:ignore WordPress.PHP.DevelopmentFunctions.error_log_trigger_error
128			trigger_error(esc_html(sprintf(
129			'PUC %s does not support %s',
130			self::$latestCompatibleVersion,
131			$service
132			)), E_USER_ERROR);
133			}
134
135			return new $checkerClass(
136			new $apiClass($metadataUrl),
137			$id,
138			$slug,
139			$checkPeriod,
140			$optionName,
141			$muPluginFile
142			);
143			}
144			}
145
146			/**
147			*
148			* Normalize a filesystem path. Introduced in WP 3.9.
149			* Copying here allows use of the class on earlier versions.
150			* This version adapted from WP 4.8.2 (unchanged since 4.5.0)
151			*
152			* @param string $path Path to normalize.
153			* @return string Normalized path.
154			*/
155			public static function normalizePath($path) {
156			if ( function_exists('wp_normalize_path') ) {
157			return wp_normalize_path($path);
158			}
159			$path = str_replace('\\', '/', $path);
160			$path = preg_replace('\|(?<=.)/+\|', '/', $path);
161			if ( substr($path, 1, 1) === ':' ) {
162			$path = ucfirst($path);
163			}
164			return $path;
165			}
166
167			/**
168			* Check if the path points to a plugin file.
169			*
170			* @param string $absolutePath Normalized path.
171			* @return bool
172			*/
173			protected static function isPluginFile($absolutePath) {
174			//Is the file inside the "plugins" or "mu-plugins" directory?
175			$pluginDir = self::normalizePath(WP_PLUGIN_DIR);
176			$muPluginDir = self::normalizePath(WPMU_PLUGIN_DIR);
177			if ( (strpos($absolutePath, $pluginDir) === 0) \|\| (strpos($absolutePath, $muPluginDir) === 0) ) {
178			return true;
179			}
180
181			//Is it a file at all? Caution: is_file() can fail if the parent dir. doesn't have the +x permission set.
182			if ( !is_file($absolutePath) ) {
183			return false;
184			}
185
186			//Does it have a valid plugin header?
187			//This is a last-ditch check for plugins symlinked from outside the WP root.
188			if ( function_exists('get_file_data') ) {
189			$headers = get_file_data($absolutePath, array('Name' => 'Plugin Name'), 'plugin');
190			return !empty($headers['Name']);
191			}
192
193			return false;
194			}
195
196			/**
197			* Get the name of the theme's directory from a full path to a file inside that directory.
198			* E.g. "/abc/public_html/wp-content/themes/foo/whatever.php" => "foo".
199			*
200			* Note that subdirectories are currently not supported. For example,
201			* "/xyz/wp-content/themes/my-theme/includes/whatever.php" => NULL.
202			*
203			* @param string $absolutePath Normalized path.
204			* @return string\|null Directory name, or NULL if the path doesn't point to a theme.
205			*/
206			protected static function getThemeDirectoryName($absolutePath) {
207			if ( is_file($absolutePath) ) {
208			$absolutePath = dirname($absolutePath);
209			}
210
211			if ( file_exists($absolutePath . '/style.css') ) {
212			return basename($absolutePath);
213			}
214			return null;
215			}
216
217			/**
218			* Get the service URI from the file header.
219			*
220			* @param string $fullPath
221			* @return string
222			*/
223			private static function getServiceURI($fullPath) {
224			//Look for the URI
225			if ( is_readable($fullPath) ) {
226			$seek = array(
227			'github' => 'GitHub URI',
228			'gitlab' => 'GitLab URI',
229			'bucket' => 'BitBucket URI',
230			);
231			$seek = apply_filters('puc_get_source_uri', $seek);
232			$data = get_file_data($fullPath, $seek);
233			foreach ($data as $key => $uri) {
234			if ( $uri ) {
235			return $uri;
236			}
237			}
238			}
239
240			//URI was not found so throw an error.
241			throw new \RuntimeException(
242			sprintf('Unable to locate URI in header of "%s"', htmlentities($fullPath))
243			);
244			}
245
246			/**
247			* Get the name of the hosting service that the URL points to.
248			*
249			* @param string $metadataUrl
250			* @return string\|null
251			*/
252			private static function getVcsService($metadataUrl) {
253			$service = null;
254
255			//Which hosting service does the URL point to?
256			$host = (string)(wp_parse_url($metadataUrl, PHP_URL_HOST));
257			$path = (string)(wp_parse_url($metadataUrl, PHP_URL_PATH));
258
259			//Check if the path looks like "/user-name/repository".
260			//For GitLab.com it can also be "/user/group1/group2/.../repository".
261			$repoRegex = '@^/?([^/]+?)/([^/#?&]+?)/?$@';
262			if ( $host === 'gitlab.com' ) {
263			$repoRegex = '@^/?(?:[^/#?&]++/){1,20}(?:[^/#?&]++)/?$@';
264			}
265			if ( preg_match($repoRegex, $path) ) {
266			$knownServices = array(
267			'github.com' => 'GitHub',
268			'bitbucket.org' => 'BitBucket',
269			'gitlab.com' => 'GitLab',
270			);
271			if ( isset($knownServices[$host]) ) {
272			$service = $knownServices[$host];
273			}
274			}
275
276			return apply_filters('puc_get_vcs_service', $service, $host, $path, $metadataUrl);
277			}
278
279			/**
280			* Get the latest version of the specified class that has the same major version number
281			* as this factory class.
282			*
283			* @param string $class Partial class name.
284			* @return string\|null Full class name.
285			*/
286			protected static function getCompatibleClassVersion($class) {
287			if ( isset(self::$classVersions[$class][self::$latestCompatibleVersion]) ) {
288			return self::$classVersions[$class][self::$latestCompatibleVersion];
289			}
290			return null;
291			}
292
293			/**
294			* Get the specific class name for the latest available version of a class.
295			*
296			* @param string $class
297			* @return null\|string
298			*/
299			public static function getLatestClassVersion($class) {
300			if ( !self::$sorted ) {
301			self::sortVersions();
302			}
303
304			if ( isset(self::$classVersions[$class]) ) {
305			return reset(self::$classVersions[$class]);
306			} else {
307			return null;
308			}
309			}
310
311			/**
312			* Sort available class versions in descending order (i.e. newest first).
313			*/
314			protected static function sortVersions() {
315			foreach ( self::$classVersions as $class => $versions ) {
316			uksort($versions, array(__CLASS__, 'compareVersions'));
317			self::$classVersions[$class] = $versions;
318			}
319			self::$sorted = true;
320			}
321
322			protected static function compareVersions($a, $b) {
323			return -version_compare($a, $b);
324			}
325
326			/**
327			* Register a version of a class.
328			*
329			* @access private This method is only for internal use by the library.
330			*
331			* @param string $generalClass Class name without version numbers, e.g. 'PluginUpdateChecker'.
332			* @param string $versionedClass Actual class name, e.g. 'PluginUpdateChecker_1_2'.
333			* @param string $version Version number, e.g. '1.2'.
334			*/
335			public static function addVersion($generalClass, $versionedClass, $version) {
336			if ( empty(self::$myMajorVersion) ) {
337			$lastNamespaceSegment = substr(__NAMESPACE__, strrpos(__NAMESPACE__, '\\') + 1);
338			self::$myMajorVersion = substr(ltrim($lastNamespaceSegment, 'v'), 0, 1);
339			}
340
341			//Store the greatest version number that matches our major version.
342			$components = explode('.', $version);
343			if ( $components[0] === self::$myMajorVersion ) {
344
345			if (
346			empty(self::$latestCompatibleVersion)
347			\|\| version_compare($version, self::$latestCompatibleVersion, '>')
348			) {
349			self::$latestCompatibleVersion = $version;
350			}
351
352			}
353
354			if ( !isset(self::$classVersions[$generalClass]) ) {
355			self::$classVersions[$generalClass] = array();
356			}
357			self::$classVersions[$generalClass][$version] = $versionedClass;
358			self::$sorted = false;
359			}
360			}
361
362			endif;
363

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