Copyright year updated, converted double->single quotes
[core.git] / inc / loader / class_ClassLoader.php
index ffa07930f1bae1c3677840e426f83bdd18ff90cb..b50f3695793a02ad453f559560646c522239b38e 100644 (file)
@@ -2,11 +2,11 @@
 /**
  * This class loads class include files with a specific prefix and suffix
  *
- * @author             Roland Haeder <webmaster@ship-simu.org>
+ * @author             Roland Haeder <webmaster@shipsimu.org>
  * @version            0.0.0
- * @copyright  Copyright (c) 2007 - 2009 Roland Haeder, this is free software
+ * @copyright  Copyright (c) 2007, 2008 Roland Haeder, 2009 - 2013 Core Developer Team
  * @license            GNU GPL 3.0 or any newer version
- * @link               http://www.ship-simu.org
+ * @link               http://www.shipsimu.org
  *
  * This program is free software: you can redistribute it and/or modify
  * it under the terms of the GNU General Public License as published by
  * along with this program. If not, see <http://www.gnu.org/licenses/>.
  *
  * ----------------------------------
+ * 1.4
+ *  - Some comments improved, other minor improvements
  * 1.3
  *  - Constructor is now empty and factory method 'createClassLoader' is created
  *  - renamed loadClasses to scanClassPath
- *  - Added initLoader(), $configInstance renamed to $configInstance
+ *  - Added initLoader()
  * 1.2
  *  - ClassLoader rewritten to PHP SPL's own RecursiveIteratorIterator class
  * 1.1
@@ -38,7 +40,7 @@ class ClassLoader {
        /**
         * Instance of this class
         */
-       private static $selfInstance = null;
+       private static $selfInstance = NULL;
 
        /**
         * Array with all classes
@@ -53,12 +55,12 @@ class ClassLoader {
        /**
         * Suffix with extension for all class files
         */
-       private $prefix = "class_";
+       private $prefix = 'class_';
 
        /**
         * Suffix with extension for all class files
         */
-       private $suffix = ".php";
+       private $suffix = '.php';
 
        /**
         * A list for directory names (no leading/trailing slashes!) which not be scanned by the path scanner
@@ -67,29 +69,29 @@ class ClassLoader {
        private $ignoreList = array();
 
        /**
-        * Debug this class loader? (true = yes, false = no)
+        * Debug this class loader? (TRUE = yes, FALSE = no)
         */
-       private $debug = false;
+       private $debug = FALSE;
 
        /**
-        * Wether the file list is cached or not
+        * Whether the file list is cached
         */
-       private $listCached = false;
+       private $listCached = FALSE;
 
        /**
         * Wethe class content has been cached
         */
-       private $classesCached = false;
+       private $classesCached = FALSE;
 
        /**
         * Filename for the list cache
         */
-       private $listCacheFQFN = "";
+       private $listCacheFQFN = '';
 
        /**
         * Cache for class content
         */
-       private $classCacheFQFN = "";
+       private $classCacheFQFN = '';
 
        /**
         * Counter for loaded include files
@@ -98,21 +100,53 @@ class ClassLoader {
 
        /**
         * The protected constructor. Please use the factory method below, or use
-        * getInstance() for singleton
+        * getSelfInstance() for singleton
         *
         * @return      void
         */
        protected function __construct () {
-               // Is Currently empty
+               // Is currently empty
        }
 
        /**
-        * Our renamed factory method
+        * The destructor makes it sure all caches got flushed
         *
-        * @param       $configInstance Configuration class instance
         * @return      void
         */
-       public final static function createClassLoader (FrameworkConfiguration $configInstance) {
+       public function __destruct () {
+               // Skip here if dev-mode
+               if (defined('DEVELOPER')) {
+                       return;
+               } // END - if
+
+               // Skip here if already cached
+               if ($this->listCached === FALSE) {
+                       // Writes the cache file of our list away
+                       $cacheContent = serialize($this->classes);
+                       file_put_contents($this->listCacheFQFN, $cacheContent);
+               } // END - if
+
+               // Skip here if already cached
+               if ($this->classesCached === FALSE) {
+                       // Generate a full-cache of all classes
+                       $cacheContent = '';
+                       foreach ($this->loadedClasses as $fqfn) {
+                               // Load the file
+                               $cacheContent .= file_get_contents($fqfn);
+                       } // END - foreach
+
+                       // And write it away
+                       file_put_contents($this->classCacheFQFN, $cacheContent);
+               } // END - if
+       }
+
+       /**
+        * Creates an instance of this class loader for given configuration instance
+        *
+        * @param       $configInstance         Configuration class instance
+        * @return      void
+        */
+       public static final function createClassLoader (FrameworkConfiguration $configInstance) {
                // Get a new instance
                $loaderInstance = new ClassLoader();
 
@@ -135,19 +169,21 @@ class ClassLoader {
 
                // Construct the FQFN for the cache
                if (!defined('DEVELOPER')) {
-                       $this->listCacheFQFN  = $this->configInstance->readConfig('local_db_path') . "list-" . $this->configInstance->readConfig('app_name') . ".cache";
-                       $this->classCacheFQFN = $this->configInstance->readConfig('local_db_path') . "class-" . $this->configInstance->readConfig('app_name') . ".cache";
+                       $this->listCacheFQFN  = $this->configInstance->getConfigEntry('local_db_path') . 'list-' . $this->configInstance->getConfigEntry('app_name') . '.cache';
+                       $this->classCacheFQFN = $this->configInstance->getConfigEntry('local_db_path') . 'class-' . $this->configInstance->getConfigEntry('app_name') . '.cache';
                } // END - if
 
                // Set suffix and prefix from configuration
-               $this->suffix = $configInstance->readConfig('class_suffix');
-               $this->prefix = $configInstance->readConfig('class_prefix');
+               $this->suffix = $configInstance->getConfigEntry('class_suffix');
+               $this->prefix = $configInstance->getConfigEntry('class_prefix');
 
                // Set own instance
                self::$selfInstance = $this;
 
                // Skip here if no dev-mode
-               if (defined('DEVELOPER')) return;
+               if (defined('DEVELOPER')) {
+                       return;
+               } // END - if
 
                // IS the cache there?
                if (file_exists($this->listCacheFQFN)) {
@@ -158,7 +194,7 @@ class ClassLoader {
                        $this->classes = unserialize($cacheContent);
 
                        // List has been restored from cache!
-                       $this->listCached = true;
+                       $this->listCached = TRUE;
                } // END - if
 
                // Does the class cache exist?
@@ -167,7 +203,7 @@ class ClassLoader {
                        require($this->classCacheFQFN);
 
                        // Mark the class cache as loaded
-                       $this->classesCached = true;
+                       $this->classesCached = TRUE;
                } // END - if
        }
 
@@ -179,72 +215,25 @@ class ClassLoader {
         */
        public static function autoLoad ($className) {
                // Try to include this class
-               self::getInstance()->includeClass($className);
+               self::getSelfInstance()->includeClass($className);
        }
 
        /**
-        * Getter for an instance of this class
+        * Singleton getter for an instance of this class
         *
-        * @return      $selfInstance           An instance of this class
+        * @return      $selfInstance   A singleton instance of this class
         */
-       public final static function getInstance () {
+       public static final function getSelfInstance () {
                // Is the instance there?
                if (is_null(self::$selfInstance)) {
                        // Get a new one
-                       self::$selfInstance = ClassLoader::createClassLoader(FrameworkConfiguration::getInstance());
+                       self::$selfInstance = ClassLoader::createClassLoader(FrameworkConfiguration::getSelfInstance());
                } // END - if
 
                // Return the instance
                return self::$selfInstance;
        }
 
-       /**
-        * The destructor makes it sure all caches got flushed
-        *
-        * @return      void
-        */
-       public function __destruct () {
-               // Skip here if dev-mode
-               if (defined('DEVELOPER')) return;
-
-               // Skip here if already cached
-               if ($this->listCached === false) {
-                       // Writes the cache file of our list away
-                       $cacheContent = serialize($this->classes);
-                       file_put_contents($this->listCacheFQFN, $cacheContent);
-               } // END - if
-
-               // Skip here if already cached
-               if ($this->classesCached === false) {
-                       // Generate a full-cache of all classes
-                       $cacheContent = "";
-                       foreach ($this->loadedClasses as $fqfn) {
-                               // Load the file
-                               $cacheContent .= file_get_contents($fqfn);
-                       } // END - foreach
-
-                       // And write it away
-                       file_put_contents($this->classCacheFQFN, $cacheContent);
-               } // END - if
-       }
-
-       /**
-        * Fall-back method. Please replace loadClasses() with scanClassPath() !
-        *
-        * @param       $basePath               The relative base path to 'base_path' constant for all classes
-        * @param       $ignoreList             An optional list (array forced) of directory and file names which shall be ignored
-        * @return      void
-        * @deprecated
-        * @todo        Rewrite your apps to scanClassPath()
-        */
-       public function loadClasses ($basePath, array $ignoreList = array() ) {
-               // This outputs an ugly message because you need to change to scanClassPath
-               print __METHOD__." is deprecated. Use scanClassPath() to make this warning go away.<br />\n";
-
-               // Call our new method
-               $this->scanClassPath($basePath, $ignoreList);
-       }
-
        /**
         * Scans recursively a local path for class files which must have a prefix and a suffix as given by $this->suffix and $this->prefix
         *
@@ -254,30 +243,35 @@ class ClassLoader {
         */
        public function scanClassPath ($basePath, array $ignoreList = array() ) {
                // Is a list has been restored from cache, don't read it again
-               if ($this->listCached === true) {
+               if ($this->listCached === TRUE) {
                        // Abort here
                        return;
-               }
+               } // END - if
 
-               // Directories which our class loader ignores by default while
-               // deep-scanning the directory structure.
-               $ignoreList[] = ".";
-               $ignoreList[] = "..";
-               $ignoreList[] = ".htaccess";
-               $ignoreList[] = ".svn";
+               /*
+                * Directories which this class loader ignores by default while
+                * scanning the whole directory structure starting from given base
+                * path.
+                */
+               array_push($ignoreList, '.');
+               array_push($ignoreList, '..');
+               array_push($ignoreList, '.htaccess');
+               array_push($ignoreList, '.svn');
 
                // Keep it in class for later usage
                $this->ignoreList = $ignoreList;
 
-               // Set base directory which holds all our classes, we should use an
-               // absolute path here so is_dir(), is_file() and so on will always
-               // find the correct files and dirs.
+               /*
+                * Set base directory which holds all our classes, we should use an
+                * absolute path here so is_dir(), is_file() and so on will always
+                * find the correct files and dirs.
+                */
                $basePath2 = realpath($basePath);
 
-               // If the basePath is false it is invalid
-               if ($basePath2 === false) {
+               // If the basePath is FALSE it is invalid
+               if ($basePath2 === FALSE) {
                        /* @todo: Do not die here. */
-                       die("Cannot read {$basePath} !");
+                       exit(__METHOD__ . ':Cannot read ' . $basePath . ' !');
                } else {
                        // Set base path
                        $basePath = $basePath2;
@@ -291,12 +285,14 @@ class ClassLoader {
                        // Get filename from iterator
                        $fileName = $entry->getFileName();
 
+                       // Get the FQFN and add it to our class list
+                       $fqfn = $entry->getRealPath();
+
                        // Is this file wanted?
                        //* DEBUG: */ echo "FOUND:{$fileName}<br />\n";
-                       if ((!in_array($fileName, $this->ignoreList)) && (substr($fileName, 0, strlen($this->prefix)) == $this->prefix) && (substr($fileName, -strlen($this->suffix), strlen($this->suffix)) == $this->suffix)) {
-                               // Get the FQFN and add it to our class list
-                               $fqfn = $entry->getRealPath();
+                       if ((!in_array($fileName, $this->ignoreList)) && (filesize($fqfn) > 100) && (substr($fileName, 0, strlen($this->prefix)) == $this->prefix) && (substr($fileName, -strlen($this->suffix), strlen($this->suffix)) == $this->suffix)) {
                                //* DEBUG: */ echo "ADD: {$fileName}<br />\n";
+                               // Add it to the list
                                $this->classes[$fileName] = $fqfn;
                        } // END - if
                } // END - foreach
@@ -312,10 +308,10 @@ class ClassLoader {
                $oldPrefix = $this->prefix;
 
                // Set new prefix (temporary!)
-               $this->prefix = "config-";
+               $this->prefix = 'config-';
 
                // Set base directory
-               $basePath = sprintf("%sinc/config/", $this->configInstance->readConfig('base_path'));
+               $basePath = $this->configInstance->getConfigEntry('base_path') . 'inc/config/';
 
                // Load all classes from the config directory
                $this->scanClassPath($basePath);
@@ -323,7 +319,7 @@ class ClassLoader {
                // Include these extra configs now
                $this->includeExtraConfigs();
 
-               // Set the prefix back
+               // Set back the old prefix
                $this->prefix = $oldPrefix;
        }
 
@@ -350,7 +346,7 @@ class ClassLoader {
                        $this->total++;
 
                        // Mark this class as loaded
-                       $this->loadedClasses[] = $this->classes[$fileName];
+                       array_push($this->loadedClasses, $this->classes[$fileName]);
 
                        // Remove it from classes list
                        unset($this->classes[$fileName]);
@@ -358,7 +354,7 @@ class ClassLoader {
                        // Developer mode excludes caching (better debugging)
                        if (!defined('DEVELOPER')) {
                                // Reset cache
-                               $this->classesCached = false;
+                               $this->classesCached = FALSE;
                        } // END - if
                } // END - if
        }
@@ -398,9 +394,9 @@ class ClassLoader {
         */
        public function getPrintableIncludeList () {
                // Prepare the list
-               $includeList = "";
+               $includeList = '';
                foreach ($this->loadedClasses as $classFile) {
-                       $includeList .= basename($classFile)."<br />\n";
+                       $includeList .= basename($classFile) . '<br />' . PHP_EOL;
                } // END - foreach
 
                // And return it