PluginController::getInstance() - Code Metrics - Inspection of "deprecate the pluginutils" - splitbrain/dokuwiki - Measure and Improve Code Quality continuously with Scrutinizer

Completed

Push — psr2-plugin ( 6f343c...628d18 )

by Andreas

created 2018-07-20 12:36 UTC

PluginController::getInstance() A

↳ Parent: PluginController

Complexity

Conditions	3
Paths	2

Size

Total Lines

Duplication

Lines	0
Ratio	0 %

Importance

Changes

Metric	Value
cc	3
nc	2
nop	1
dl	0
loc	7
rs	10
c	0
b	0
f	0

<?php
namespace dokuwiki\Extension;

/**
 * Class to encapsulate access to dokuwiki plugins
 *
 * @license    GPL 2 (http://www.gnu.org/licenses/gpl.html)
 * @author     Christopher Smith <[email protected]>
 */
class PluginController
{
    /** @var PluginController */
    protected static $instance;

    /** The different types of plugins DokuWiki supports */
    const PLUGIN_TYPES = array('auth', 'admin','syntax','action','renderer', 'helper','remote');

    protected $list_bytype = array();
    protected $tmp_plugins = array();
    protected $plugin_cascade = array('default' => array(), 'local' => array(), 'protected' => array());
    protected $last_local_config_file = '';

    /**
     * Populates the master list of plugins
     * @param bool $usedGetInstance temporary to find deprecated uses
     * @deprecated 2018-06-16 This constructor will be made private
     */
    public function __construct($usedGetInstance=false)
    {
        if(!$usedGetInstance) {
            dbg_deprecated('\dokuwiki\Extension\PluginController::getInstance');
        }
        $this->loadConfig();
        $this->_populateMasterList();
    }

    /**
     * Get the singleton instance of the Plugin Controller
     *
     * @param bool $init force a reload of the controller
     * @return PluginController
     */
    public static function getInstance($init=false) {
        if(self::$instance === null || $init) {
            self::$instance = new PluginController(true);
        }

        return self::$instance;
    }

    /**
     * Returns a list of available plugins of given type
     *
     * @param $type  string, plugin_type name;
     *               the type of plugin to return,
     *               use empty string for all types
     * @param $all   bool;
     *               false to only return enabled plugins,
     *               true to return both enabled and disabled plugins
     *
     * @return       array of
     *                  - plugin names when $type = ''
     *                  - or plugin component names when a $type is given
     *
     * @author Andreas Gohr <[email protected]>
     */
    public function getList($type = '', $all = false)
    {

        // request the complete list
        if (!$type) {
            return $all ? array_keys($this->tmp_plugins) : array_keys(array_filter($this->tmp_plugins));
        }

        if (!isset($this->list_bytype[$type]['enabled'])) {
            $this->list_bytype[$type]['enabled'] = $this->_getListByType($type, true);
        }
        if ($all && !isset($this->list_bytype[$type]['disabled'])) {
            $this->list_bytype[$type]['disabled'] = $this->_getListByType($type, false);
        }

        return $all
            ? array_merge($this->list_bytype[$type]['enabled'], $this->list_bytype[$type]['disabled'])
            : $this->list_bytype[$type]['enabled'];
    }

    /**
     * Loads the given plugin and creates an object of it
     *
     * @author Andreas Gohr <[email protected]>
     *
     * @param  $type     string type of plugin to load
     * @param  $name     string name of the plugin to load
     * @param  $new      bool   true to return a new instance of the plugin, false to use an already loaded instance
     * @param  $disabled bool   true to load even disabled plugins
     * @return PluginInterface|null  the plugin object or null on failure
     */
    public function load($type, $name, $new = false, $disabled = false)
    {

        //we keep all loaded plugins available in global scope for reuse
        global $DOKU_PLUGINS;

        list($plugin, /* $component */) = $this->_splitName($name);

        // check if disabled
        if (!$disabled && !$this->isEnabled($plugin)) {
            return null;
        }

        $class = $type . '_plugin_' . $name;

        //plugin already loaded?
        if (!empty($DOKU_PLUGINS[$type][$name])) {
            if ($new || !$DOKU_PLUGINS[$type][$name]->isSingleton()) {
                return class_exists($class, true) ? new $class : null;
            } else {
                return $DOKU_PLUGINS[$type][$name];
            }
        }

        //construct class and instantiate
        if (!class_exists($class, true)) {

            # the plugin might be in the wrong directory
            $inf = confToHash(DOKU_PLUGIN . "$plugin/plugin.info.txt");
            if ($inf['base'] && $inf['base'] != $plugin) {
                msg(
                    sprintf(
                        "Plugin installed incorrectly. Rename plugin directory '%s' to '%s'.",
                        hsc($plugin),
                        hsc(
                            $inf['base']
                        )
                    ), -1
                );
            } elseif (preg_match('/^' . DOKU_PLUGIN_NAME_REGEX . '$/', $plugin) !== 1) {
                msg(
                    sprintf(
                        "Plugin name '%s' is not a valid plugin name, only the characters a-z and 0-9 are allowed. " .
                        'Maybe the plugin has been installed in the wrong directory?', hsc($plugin)
                    ), -1
                );
            }
            return null;
        }

        $DOKU_PLUGINS[$type][$name] = new $class;
        return $DOKU_PLUGINS[$type][$name];
    }

    /**
     * Whether plugin is disabled
     *
     * @param string $plugin name of plugin
     * @return bool  true disabled, false enabled
     * @deprecated in favor of the more sensible isEnabled where the return value matches the enabled state
     */
    public function isDisabled($plugin)
    {
        dbg_deprecated('isEnabled()');
        return !$this->isEnabled($plugin);
    }

    /**
     * Check whether plugin is disabled
     *
     * @param string $plugin name of plugin
     * @return bool  true enabled, false disabled
     */
    public function isEnabled($plugin)
    {
        return !empty($this->tmp_plugins[$plugin]);
    }

    /**
     * Disable the plugin
     *
     * @param string $plugin name of plugin
     * @return bool  true saving succeed, false saving failed
     */
    public function disable($plugin)
    {
        if (array_key_exists($plugin, $this->plugin_cascade['protected'])) return false;
        $this->tmp_plugins[$plugin] = 0;
        return $this->saveList();
    }

    /**
     * Enable the plugin
     *
     * @param string $plugin name of plugin
     * @return bool  true saving succeed, false saving failed
     */
    public function enable($plugin)
    {
        if (array_key_exists($plugin, $this->plugin_cascade['protected'])) return false;
        $this->tmp_plugins[$plugin] = 1;
        return $this->saveList();
    }

    /**
     * Returns cascade of the config files
     *
     * @return array with arrays of plugin configs
     */
    public function getCascade()
    {
        return $this->plugin_cascade;
    }

    protected function _populateMasterList()
    {
        global $conf;

        if ($dh = @opendir(DOKU_PLUGIN)) {
            $all_plugins = array();
            while (false !== ($plugin = readdir($dh))) {
                if ($plugin[0] == '.') continue;               // skip hidden entries
                if (is_file(DOKU_PLUGIN . $plugin)) continue;    // skip files, we're only interested in directories

                if (array_key_exists($plugin, $this->tmp_plugins) && $this->tmp_plugins[$plugin] == 0) {
                    $all_plugins[$plugin] = 0;

                } elseif ((array_key_exists($plugin, $this->tmp_plugins) && $this->tmp_plugins[$plugin] == 1)) {
                    $all_plugins[$plugin] = 1;
                } else {
                    $all_plugins[$plugin] = 1;
                }
            }
            $this->tmp_plugins = $all_plugins;
            if (!file_exists($this->last_local_config_file)) {
                $this->saveList(true);
            }
        }
    }

    /**
     * Includes the plugin config $files
     * and returns the entries of the $plugins array set in these files
     *
     * @param array $files list of files to include, latter overrides previous
     * @return array with entries of the $plugins arrays of the included files
     */
    protected function checkRequire($files)
    {
        $plugins = array();
        foreach ($files as $file) {
            if (file_exists($file)) {
                include_once($file);
            }
        }
        return $plugins;
    }

    /**
     * Save the current list of plugins
     *
     * @param bool $forceSave ;
     *              false to save only when config changed
     *              true to always save
     * @return bool  true saving succeed, false saving failed
     */
    protected function saveList($forceSave = false)
    {
        global $conf;

        if (empty($this->tmp_plugins)) return false;

        // Rebuild list of local settings
        $local_plugins = $this->rebuildLocal();
        if ($local_plugins != $this->plugin_cascade['local'] || $forceSave) {
            $file = $this->last_local_config_file;
            $out = "<?php\n/*\n * Local plugin enable/disable settings\n" .
                " * Auto-generated through plugin/extension manager\n *\n" .
                " * NOTE: Plugins will not be added to this file unless there " .
                "is a need to override a default setting. Plugins are\n" .
                " *       enabled by default.\n */\n";
            foreach ($local_plugins as $plugin => $value) {
                $out .= "\$plugins['$plugin'] = $value;\n";
            }
            // backup current file (remove any existing backup)
            if (file_exists($file)) {
                $backup = $file . '.bak';
                if (file_exists($backup)) @unlink($backup);
                if (!@copy($file, $backup)) return false;
                if (!empty($conf['fperm'])) chmod($backup, $conf['fperm']);
            }
            //check if can open for writing, else restore
            return io_saveFile($file, $out);
        }
        return false;
    }

    /**
     * Rebuild the set of local plugins
     *
     * @return array array of plugins to be saved in end($config_cascade['plugins']['local'])
     */
    protected function rebuildLocal()
    {
        //assign to local variable to avoid overwriting
        $backup = $this->tmp_plugins;
        //Can't do anything about protected one so rule them out completely
        $local_default = array_diff_key($backup, $this->plugin_cascade['protected']);
        //Diff between local+default and default
        //gives us the ones we need to check and save
        $diffed_ones = array_diff_key($local_default, $this->plugin_cascade['default']);
        //The ones which we are sure of (list of 0s not in default)
        $sure_plugins = array_filter($diffed_ones, array($this, 'negate'));
        //the ones in need of diff
        $conflicts = array_diff_key($local_default, $diffed_ones);
        //The final list
        return array_merge($sure_plugins, array_diff_assoc($conflicts, $this->plugin_cascade['default']));
    }

    /**
     * Build the list of plugins and cascade
     *
     */
    protected function loadConfig()
    {
        global $config_cascade;
        foreach (array('default', 'protected') as $type) {
            if (array_key_exists($type, $config_cascade['plugins'])) {
                $this->plugin_cascade[$type] = $this->checkRequire($config_cascade['plugins'][$type]);
            }
        }
        $local = $config_cascade['plugins']['local'];
        $this->last_local_config_file = array_pop($local);
        $this->plugin_cascade['local'] = $this->checkRequire(array($this->last_local_config_file));
        if (is_array($local)) {
            $this->plugin_cascade['default'] = array_merge(
                $this->plugin_cascade['default'],
                $this->checkRequire($local)
            );
        }
        $this->tmp_plugins = array_merge(
            $this->plugin_cascade['default'],
            $this->plugin_cascade['local'],
            $this->plugin_cascade['protected']
        );
    }

    /**
     * Returns a list of available plugin components of given type
     *
     * @param string $type plugin_type name; the type of plugin to return,
     * @param bool $enabled true to return enabled plugins,
     *                          false to return disabled plugins
     * @return array of plugin components of requested type
     */
    protected function _getListByType($type, $enabled)
    {
        $master_list = $enabled
            ? array_keys(array_filter($this->tmp_plugins))
            : array_keys(array_filter($this->tmp_plugins, array($this, 'negate')));
        $plugins = array();

        foreach ($master_list as $plugin) {

            if (file_exists(DOKU_PLUGIN . "$plugin/$type.php")) {
                $plugins[] = $plugin;
                continue;
            }

            $typedir = DOKU_PLUGIN . "$plugin/$type/";
            if (is_dir($typedir)) {
                if ($dp = opendir($typedir)) {
                    while (false !== ($component = readdir($dp))) {
                        if (substr($component, 0, 1) == '.' || strtolower(substr($component, -4)) != ".php") continue;
                        if (is_file($typedir . $component)) {
                            $plugins[] = $plugin . '_' . substr($component, 0, -4);
                        }
                    }
                    closedir($dp);
                }
            }

        }//foreach

        return $plugins;
    }

    /**
     * Split name in a plugin name and a component name
     *
     * @param string $name
     * @return array with
     *              - plugin name
     *              - and component name when available, otherwise empty string
     */
    protected function _splitName($name)
    {
        if (array_search($name, array_keys($this->tmp_plugins)) === false) {
            return explode('_', $name, 2);
        }

        return array($name, '');
    }

    /**
     * Returns inverse boolean value of the input
     *
     * @param mixed $input
     * @return bool inversed boolean value of input
     */
    protected function negate($input)
    {
        return !(bool)$input;
    }
}


1			<?php
2			namespace dokuwiki\Extension;
3
4			/**
5			* Class to encapsulate access to dokuwiki plugins
6			*
7			* @license GPL 2 (http://www.gnu.org/licenses/gpl.html)
8			* @author Christopher Smith <[email protected]>
9			*/
10			class PluginController
11			{
12			/** @var PluginController */
13			protected static $instance;
14
15			/** The different types of plugins DokuWiki supports */
16			const PLUGIN_TYPES = array('auth', 'admin','syntax','action','renderer', 'helper','remote');
17
18			protected $list_bytype = array();
19			protected $tmp_plugins = array();
20			protected $plugin_cascade = array('default' => array(), 'local' => array(), 'protected' => array());
21			protected $last_local_config_file = '';
22
23			/**
24			* Populates the master list of plugins
25			* @param bool $usedGetInstance temporary to find deprecated uses
26			* @deprecated 2018-06-16 This constructor will be made private
27			*/
28			public function __construct($usedGetInstance=false)
29			{
30			if(!$usedGetInstance) {
31			dbg_deprecated('\dokuwiki\Extension\PluginController::getInstance');
32			}
33			$this->loadConfig();
34			$this->_populateMasterList();
35			}
36
37			/**
38			* Get the singleton instance of the Plugin Controller
39			*
40			* @param bool $init force a reload of the controller
41			* @return PluginController
42			*/
43			public static function getInstance($init=false) {
44			if(self::$instance === null \|\| $init) {
45			self::$instance = new PluginController(true);
46			}
47
48			return self::$instance;
49			}
50
51			/**
52			* Returns a list of available plugins of given type
53			*
54			* @param $type string, plugin_type name;
55			* the type of plugin to return,
56			* use empty string for all types
57			* @param $all bool;
58			* false to only return enabled plugins,
59			* true to return both enabled and disabled plugins
60			*
61			* @return array of
62			* - plugin names when $type = ''
63			* - or plugin component names when a $type is given
64			*
65			* @author Andreas Gohr <[email protected]>
66			*/
67			public function getList($type = '', $all = false)
68			{
69
70			// request the complete list
71			if (!$type) {
72			return $all ? array_keys($this->tmp_plugins) : array_keys(array_filter($this->tmp_plugins));
73			}
74
75			if (!isset($this->list_bytype[$type]['enabled'])) {
76			$this->list_bytype[$type]['enabled'] = $this->_getListByType($type, true);
77			}
78			if ($all && !isset($this->list_bytype[$type]['disabled'])) {
79			$this->list_bytype[$type]['disabled'] = $this->_getListByType($type, false);
80			}
81
82			return $all
83			? array_merge($this->list_bytype[$type]['enabled'], $this->list_bytype[$type]['disabled'])
84			: $this->list_bytype[$type]['enabled'];
85			}
86
87			/**
88			* Loads the given plugin and creates an object of it
89			*
90			* @author Andreas Gohr <[email protected]>
91			*
92			* @param $type string type of plugin to load
93			* @param $name string name of the plugin to load
94			* @param $new bool true to return a new instance of the plugin, false to use an already loaded instance
95			* @param $disabled bool true to load even disabled plugins
96			* @return PluginInterface\|null the plugin object or null on failure
97			*/
98			public function load($type, $name, $new = false, $disabled = false)
99			{
100
101			//we keep all loaded plugins available in global scope for reuse
102			global $DOKU_PLUGINS;
103
104			list($plugin, /* $component */) = $this->_splitName($name);
105
106			// check if disabled
107			if (!$disabled && !$this->isEnabled($plugin)) {
108			return null;
109			}
110
111			$class = $type . '_plugin_' . $name;
112
113			//plugin already loaded?
114			if (!empty($DOKU_PLUGINS[$type][$name])) {
115			if ($new \|\| !$DOKU_PLUGINS[$type][$name]->isSingleton()) {
116			return class_exists($class, true) ? new $class : null;
117			} else {
118			return $DOKU_PLUGINS[$type][$name];
119			}
120			}
121
122			//construct class and instantiate
123			if (!class_exists($class, true)) {
124
125			# the plugin might be in the wrong directory
126			$inf = confToHash(DOKU_PLUGIN . "$plugin/plugin.info.txt");
127			if ($inf['base'] && $inf['base'] != $plugin) {
128			msg(
129			sprintf(
130			"Plugin installed incorrectly. Rename plugin directory '%s' to '%s'.",
131			hsc($plugin),
132			hsc(
133			$inf['base']
134			)
135			), -1
136			);
137			} elseif (preg_match('/^' . DOKU_PLUGIN_NAME_REGEX . '$/', $plugin) !== 1) {
138			msg(
139			sprintf(
140			"Plugin name '%s' is not a valid plugin name, only the characters a-z and 0-9 are allowed. " .
141			'Maybe the plugin has been installed in the wrong directory?', hsc($plugin)
142			), -1
143			);
144			}
145			return null;
146			}
147
148			$DOKU_PLUGINS[$type][$name] = new $class;
149			return $DOKU_PLUGINS[$type][$name];
150			}
151
152			/**
153			* Whether plugin is disabled
154			*
155			* @param string $plugin name of plugin
156			* @return bool true disabled, false enabled
157			* @deprecated in favor of the more sensible isEnabled where the return value matches the enabled state
158			*/
159			public function isDisabled($plugin)
160			{
161			dbg_deprecated('isEnabled()');
162			return !$this->isEnabled($plugin);
163			}
164
165			/**
166			* Check whether plugin is disabled
167			*
168			* @param string $plugin name of plugin
169			* @return bool true enabled, false disabled
170			*/
171			public function isEnabled($plugin)
172			{
173			return !empty($this->tmp_plugins[$plugin]);
174			}
175
176			/**
177			* Disable the plugin
178			*
179			* @param string $plugin name of plugin
180			* @return bool true saving succeed, false saving failed
181			*/
182			public function disable($plugin)
183			{
184			if (array_key_exists($plugin, $this->plugin_cascade['protected'])) return false;
185			$this->tmp_plugins[$plugin] = 0;
186			return $this->saveList();
187			}
188
189			/**
190			* Enable the plugin
191			*
192			* @param string $plugin name of plugin
193			* @return bool true saving succeed, false saving failed
194			*/
195			public function enable($plugin)
196			{
197			if (array_key_exists($plugin, $this->plugin_cascade['protected'])) return false;
198			$this->tmp_plugins[$plugin] = 1;
199			return $this->saveList();
200			}
201
202			/**
203			* Returns cascade of the config files
204			*
205			* @return array with arrays of plugin configs
206			*/
207			public function getCascade()
208			{
209			return $this->plugin_cascade;
210			}
211
212			protected function _populateMasterList()
213			{
214			global $conf;
215
216			if ($dh = @opendir(DOKU_PLUGIN)) {
217			$all_plugins = array();
218			while (false !== ($plugin = readdir($dh))) {
219			if ($plugin[0] == '.') continue; // skip hidden entries
220			if (is_file(DOKU_PLUGIN . $plugin)) continue; // skip files, we're only interested in directories
221
222			if (array_key_exists($plugin, $this->tmp_plugins) && $this->tmp_plugins[$plugin] == 0) {
223			$all_plugins[$plugin] = 0;
224
225			} elseif ((array_key_exists($plugin, $this->tmp_plugins) && $this->tmp_plugins[$plugin] == 1)) {
226			$all_plugins[$plugin] = 1;
227			} else {
228			$all_plugins[$plugin] = 1;
229			}
230			}
231			$this->tmp_plugins = $all_plugins;
232			if (!file_exists($this->last_local_config_file)) {
233			$this->saveList(true);
234			}
235			}
236			}
237
238			/**
239			* Includes the plugin config $files
240			* and returns the entries of the $plugins array set in these files
241			*
242			* @param array $files list of files to include, latter overrides previous
243			* @return array with entries of the $plugins arrays of the included files
244			*/
245			protected function checkRequire($files)
246			{
247			$plugins = array();
248			foreach ($files as $file) {
249			if (file_exists($file)) {
250			include_once($file);
251			}
252			}
253			return $plugins;
254			}
255
256			/**
257			* Save the current list of plugins
258			*
259			* @param bool $forceSave ;
260			* false to save only when config changed
261			* true to always save
262			* @return bool true saving succeed, false saving failed
263			*/
264			protected function saveList($forceSave = false)
265			{
266			global $conf;
267
268			if (empty($this->tmp_plugins)) return false;
269
270			// Rebuild list of local settings
271			$local_plugins = $this->rebuildLocal();
272			if ($local_plugins != $this->plugin_cascade['local'] \|\| $forceSave) {
273			$file = $this->last_local_config_file;
274			$out = "<?php\n/\n Local plugin enable/disable settings\n" .
275			" * Auto-generated through plugin/extension manager\n *\n" .
276			" * NOTE: Plugins will not be added to this file unless there " .
277			"is a need to override a default setting. Plugins are\n" .
278			" * enabled by default.\n */\n";
279			foreach ($local_plugins as $plugin => $value) {
280			$out .= "\$plugins['$plugin'] = $value;\n";
281			}
282			// backup current file (remove any existing backup)
283			if (file_exists($file)) {
284			$backup = $file . '.bak';
285			if (file_exists($backup)) @unlink($backup);
286			if (!@copy($file, $backup)) return false;
287			if (!empty($conf['fperm'])) chmod($backup, $conf['fperm']);
288			}
289			//check if can open for writing, else restore
290			return io_saveFile($file, $out);
291			}
292			return false;
293			}
294
295			/**
296			* Rebuild the set of local plugins
297			*
298			* @return array array of plugins to be saved in end($config_cascade['plugins']['local'])
299			*/
300			protected function rebuildLocal()
301			{
302			//assign to local variable to avoid overwriting
303			$backup = $this->tmp_plugins;
304			//Can't do anything about protected one so rule them out completely
305			$local_default = array_diff_key($backup, $this->plugin_cascade['protected']);
306			//Diff between local+default and default
307			//gives us the ones we need to check and save
308			$diffed_ones = array_diff_key($local_default, $this->plugin_cascade['default']);
309			//The ones which we are sure of (list of 0s not in default)
310			$sure_plugins = array_filter($diffed_ones, array($this, 'negate'));
311			//the ones in need of diff
312			$conflicts = array_diff_key($local_default, $diffed_ones);
313			//The final list
314			return array_merge($sure_plugins, array_diff_assoc($conflicts, $this->plugin_cascade['default']));
315			}
316
317			/**
318			* Build the list of plugins and cascade
319			*
320			*/
321			protected function loadConfig()
322			{
323			global $config_cascade;
324			foreach (array('default', 'protected') as $type) {
325			if (array_key_exists($type, $config_cascade['plugins'])) {
326			$this->plugin_cascade[$type] = $this->checkRequire($config_cascade['plugins'][$type]);
327			}
328			}
329			$local = $config_cascade['plugins']['local'];
330			$this->last_local_config_file = array_pop($local);
331			$this->plugin_cascade['local'] = $this->checkRequire(array($this->last_local_config_file));
332			if (is_array($local)) {
333			$this->plugin_cascade['default'] = array_merge(
334			$this->plugin_cascade['default'],
335			$this->checkRequire($local)
336			);
337			}
338			$this->tmp_plugins = array_merge(
339			$this->plugin_cascade['default'],
340			$this->plugin_cascade['local'],
341			$this->plugin_cascade['protected']
342			);
343			}
344
345			/**
346			* Returns a list of available plugin components of given type
347			*
348			* @param string $type plugin_type name; the type of plugin to return,
349			* @param bool $enabled true to return enabled plugins,
350			* false to return disabled plugins
351			* @return array of plugin components of requested type
352			*/
353			protected function _getListByType($type, $enabled)
354			{
355			$master_list = $enabled
356			? array_keys(array_filter($this->tmp_plugins))
357			: array_keys(array_filter($this->tmp_plugins, array($this, 'negate')));
358			$plugins = array();
359
360			foreach ($master_list as $plugin) {
361
362			if (file_exists(DOKU_PLUGIN . "$plugin/$type.php")) {
363			$plugins[] = $plugin;
364			continue;
365			}
366
367			$typedir = DOKU_PLUGIN . "$plugin/$type/";
368			if (is_dir($typedir)) {
369			if ($dp = opendir($typedir)) {
370			while (false !== ($component = readdir($dp))) {
371			if (substr($component, 0, 1) == '.' \|\| strtolower(substr($component, -4)) != ".php") continue;
372			if (is_file($typedir . $component)) {
373			$plugins[] = $plugin . '_' . substr($component, 0, -4);
374			}
375			}
376			closedir($dp);
377			}
378			}
379
380			}//foreach
381
382			return $plugins;
383			}
384
385			/**
386			* Split name in a plugin name and a component name
387			*
388			* @param string $name
389			* @return array with
390			* - plugin name
391			* - and component name when available, otherwise empty string
392			*/
393			protected function _splitName($name)
394			{
395			if (array_search($name, array_keys($this->tmp_plugins)) === false) {
396			return explode('_', $name, 2);
397			}
398
399			return array($name, '');
400			}
401
402			/**
403			* Returns inverse boolean value of the input
404			*
405			* @param mixed $input
406			* @return bool inversed boolean value of input
407			*/
408			protected function negate($input)
409			{
410			return !(bool)$input;
411			}
412			}
413

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