]> git.mxchange.org Git - core.git/blobdiff - inc/loader/class_ClassLoader.php
Continued:
[core.git] / inc / loader / class_ClassLoader.php
index 53ee90c3d1045ffd9e8d1aea18d5719e880e4032..eee9fce15e85d458920073785c1e5ce842a64216 100644 (file)
@@ -1,10 +1,22 @@
 <?php
+// Own namespace
+namespace CoreFramework\Loader;
+
+// Import framework stuff
+use CoreFramework\Configuration\FrameworkConfiguration;
+use CoreFramework\Object\BaseFrameworkSystem;
+
+// Import SPL stuff
+use \InvalidArgumentException;
+use \RecursiveDirectoryIterator;
+use \RecursiveIteratorIterator;
+
 /**
  * This class loads class include files with a specific prefix and suffix
  *
  * @author             Roland Haeder <webmaster@shipsimu.org>
- * @version            0.0.0
- * @copyright  Copyright (c) 2007, 2008 Roland Haeder, 2009 - 2014 Core Developer Team
+ * @version            1.5.0
+ * @copyright  Copyright (c) 2007, 2008 Roland Haeder, 2009 - 2017 Core Developer Team
  * @license            GNU GPL 3.0 or any newer version
  * @link               http://www.shipsimu.org
  *
  * along with this program. If not, see <http://www.gnu.org/licenses/>.
  *
  * ----------------------------------
+ * 1.5
+ *  - Namespace scheme Project\Package[\SubPackage...] is fully supported and
+ *    throws an InvalidArgumentException if not present. The last part will be
+ *    always the class' name.
  * 1.4
  *  - Some comments improved, other minor improvements
  * 1.3
@@ -43,9 +59,9 @@ class ClassLoader {
        private static $selfInstance = NULL;
 
        /**
-        * Array with all classes
+        * Array with all found classes
         */
-       private $classes = array();
+       private $foundClasses = array();
 
        /**
         * List of loaded classes
@@ -104,7 +120,7 @@ class ClassLoader {
        private static $frameworkPaths = array(
                'exceptions', // Exceptions
                'interfaces', // Interfaces
-               'main',       // General main classes
+               'classes',    // Classes
                'middleware'  // The middleware
        );
 
@@ -133,7 +149,7 @@ class ClassLoader {
                // Skip here if already cached
                if ($this->listCached === FALSE) {
                        // Writes the cache file of our list away
-                       $cacheContent = serialize($this->classes);
+                       $cacheContent = json_encode($this->foundClasses);
                        file_put_contents($this->listCacheFQFN, $cacheContent);
                } // END - if
 
@@ -141,7 +157,7 @@ class ClassLoader {
                if ($this->classesCached === FALSE) {
                        // Generate a full-cache of all classes
                        $cacheContent = '';
-                       foreach ($this->loadedClasses as $fqfn) {
+                       foreach (array_keys($this->loadedClasses) as $fqfn) {
                                // Load the file
                                $cacheContent .= file_get_contents($fqfn);
                        } // END - foreach
@@ -174,13 +190,19 @@ class ClassLoader {
         * @return      void
         */
        public static function scanFrameworkClasses () {
+               // Trace message
+               /* NOISY-DEBUG: */ printf('[%s:%d]: CALLED!' . PHP_EOL, __METHOD__, __LINE__);
+
                // Cache loader instance
                $loaderInstance = self::getSelfInstance();
 
                // Load all classes
-               foreach (self::$frameworkPaths as $className) {
+               foreach (self::$frameworkPaths as $pathName) {
+                       // Debug message
+                       /* NOISY-DEBUG: */ printf('[%s:%d]: pathName=%s' . PHP_EOL, __METHOD__, __LINE__, $pathName);
+
                        // Try to load the framework classes
-                       $loaderInstance->scanClassPath('inc/classes/' . $className . '/');
+                       $loaderInstance->scanClassPath('inc/main/' . $pathName . '/');
                } // END - foreach
        }
 
@@ -190,18 +212,24 @@ class ClassLoader {
         * @return      void
         */
        public static function scanApplicationClasses () {
+               // Trace message
+               /* NOISY-DEBUG: */ printf('[%s:%d]: CALLED!' . PHP_EOL, __METHOD__, __LINE__);
+
                // Get config instance
                $cfg = FrameworkConfiguration::getSelfInstance();
 
                // Load all classes for the application
                foreach (self::$frameworkPaths as $class) {
                        // Create path name
-                       $path = sprintf('%s/%s/%s', $cfg->getConfigEntry('application_path'), $cfg->getConfigEntry('app_name'), $class);
+                       $pathName = sprintf('%s/%s/%s', $cfg->getConfigEntry('application_path'), $cfg->getConfigEntry('app_name'), $class);
+
+                       // Debug message
+                       /* NOISY-DEBUG: */ printf('[%s:%d]: pathName=%s' . PHP_EOL, __METHOD__, __LINE__, $pathName);
 
                        // Is the path readable?
-                       if (is_dir($path)) {
+                       if (is_dir($pathName)) {
                                // Try to load the application classes
-                               ClassLoader::getSelfInstance()->scanClassPath($path);
+                               ClassLoader::getSelfInstance()->scanClassPath($pathName);
                        } // END - if
                } // END - foreach
        }
@@ -235,19 +263,19 @@ class ClassLoader {
                } // END - if
 
                // IS the cache there?
-               if (file_exists($this->listCacheFQFN)) {
+               if (BaseFrameworkSystem::isReadableFile($this->listCacheFQFN)) {
                        // Get content
                        $cacheContent = file_get_contents($this->listCacheFQFN);
 
                        // And convert it
-                       $this->classes = unserialize($cacheContent);
+                       $this->foundClasses = json_decode($cacheContent);
 
                        // List has been restored from cache!
                        $this->listCached = TRUE;
                } // END - if
 
                // Does the class cache exist?
-               if (file_exists($this->classCacheFQFN)) {
+               if (BaseFrameworkSystem::isReadableFile($this->listCacheFQFN)) {
                        // Then include it
                        require($this->classCacheFQFN);
 
@@ -264,7 +292,7 @@ class ClassLoader {
         */
        public static function autoLoad ($className) {
                // Try to include this class
-               self::getSelfInstance()->includeClass($className);
+               self::getSelfInstance()->loadClassFile($className);
        }
 
        /**
@@ -297,53 +325,71 @@ class ClassLoader {
                        return;
                } // END - if
 
+               // Keep it in class for later usage
+               $this->ignoreList = $ignoreList;
+
                /*
-                * Directories which this class loader ignores by default while
-                * scanning the whole directory structure starting from given base
-                * path.
+                * Ignore .htaccess by default as it is for protection of directories
+                * on Apache servers.
                 */
-               array_push($ignoreList, '.');
-               array_push($ignoreList, '..');
                array_push($ignoreList, '.htaccess');
 
-               // 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
+                * Set base directory which holds all our classes, an absolute path
+                * should be used 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) {
-                       /* @todo: Do not die here. */
-                       exit(__METHOD__ . ':Cannot read ' . $basePath . ' !' . PHP_EOL);
+                       /* @TODO: Do not exit here. */
+                       exit(__METHOD__ . ': Cannot read ' . $basePath . ' !' . PHP_EOL);
                } else {
                        // Set base path
                        $basePath = $basePath2;
                }
 
                // Get a new iterator
-               //* DEBUG: */ echo "<strong>Base path: {$basePath}</strong><br />\n";
-               $iterator = new RecursiveIteratorIterator(new RecursiveDirectoryIterator($basePath));
+               /* NOISY-DEBUG: */ printf('[%s:%d] basePath=%s' . PHP_EOL, __METHOD__, __LINE__, $basePath);
+               $iteratorInstance = new RecursiveIteratorIterator(new RecursiveDirectoryIterator($basePath), RecursiveIteratorIterator::CHILD_FIRST);
+
+               // Load all entries
+               while ($iteratorInstance->valid()) {
+                       // Get current entry
+                       $currentEntry = $iteratorInstance->current();
 
-               foreach ($iterator as $entry) {
                        // Get filename from iterator
-                       $fileName = $entry->getFileName();
+                       $fileName = $currentEntry->getFileName();
+
+                       // Get the "FQFN" (path and file name)
+                       $fqfn = $currentEntry->getRealPath();
 
-                       // Get the FQFN and add it to our class list
-                       $fqfn = $entry->getRealPath();
+                       // Current entry must be a file, not smaller than 100 bytes and not on ignore list 
+                       if ((!$currentEntry->isFile()) || (in_array($fileName, $this->ignoreList)) || (filesize($fqfn) < 100)) {
+                               // Advance to next entry
+                               $iteratorInstance->next();
+
+                               // Skip non-file entries
+                               /* NOISY-DEBUG: */ printf('[%s:%d] SKIP: %s' . PHP_EOL, __METHOD__, __LINE__, $fileName);
+                               continue;
+                       } // END - if
 
                        // Is this file wanted?
-                       //* DEBUG: */ echo "FOUND:{$fileName}<br />\n";
-                       if ((!in_array($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";
+                       /* NOISY-DEBUG: */ printf('[%s:%d] FOUND: %s' . PHP_EOL, __METHOD__, __LINE__, $fileName);
+                       if ((substr($fileName, 0, strlen($this->prefix)) == $this->prefix) && (substr($fileName, -strlen($this->suffix), strlen($this->suffix)) == $this->suffix)) {
                                // Add it to the list
-                               $this->classes[$fileName] = $fqfn;
-                       } // END - if
-               } // END - foreach
+                               /* NOISY-DEBUG: */ printf('[%s:%d] ADD: %s,fqfn=%s' . PHP_EOL, __METHOD__, __LINE__, $fileName, $fqfn);
+                               $this->foundClasses[$fileName] = $fqfn;
+                       } else {
+                               // Not added
+                               /* NOISY-DEBUG: */ printf('[%s:%d] NOT ADDED: %s,fqfn=%s' . PHP_EOL, __METHOD__, __LINE__, $fileName, $fqfn);
+                       }
+
+                       // Advance to next entry
+                       /* NOISY-DEBUG: */ printf('[%s:%d] NEXT: %s' . PHP_EOL, __METHOD__, __LINE__, $fileName);
+                       $iteratorInstance->next();
+               } // END - while
        }
 
        /**
@@ -376,35 +422,56 @@ class ClassLoader {
         * missing classes or interfaces. So if you use class_exists() this method
         * does not interrupt your program.
         *
-        * @param       $className      The class we shall load
+        * @param       $className      The class that shall be loaded
         * @return      void
         */
-       public function includeClass ($className) {
+       private function loadClassFile ($className) {
+               // Trace message
+               /* NOISY-DEBUG: */ printf('[%s:%d] className=%s - CALLED!' . PHP_EOL, __METHOD__, __LINE__, $className);
+
+               // The class name should contain at least 2 back-slashes, so split at them
+               $classNameParts = explode("\\", $className);
+
+               // At least 3 parts should be there
+               if (count($classNameParts) < 3) {
+                       // Namespace scheme is: Project\Package[\SubPackage...]
+                       throw new InvalidArgumentException(sprintf('Class name "%s" is not conform to naming-convention: Project\Package[\SubPackage...]\SomeFooBar', $className));
+               } // END - if
+
+               // Get last element
+               $shortClassName = array_pop($classNameParts);
+
                // Create a name with prefix and suffix
-               $fileName = $this->prefix . $className . $this->suffix;
+               $fileName = $this->prefix . $shortClassName . $this->suffix;
 
                // Now look it up in our index
-               if ((isset($this->classes[$fileName])) && (!in_array($this->classes[$fileName], $this->loadedClasses))) {
+               /* NOISY-DEBUG: */ printf('[%s:%d] ISSET: %s' . PHP_EOL, __METHOD__, __LINE__, $fileName);
+               if ((isset($this->foundClasses[$fileName])) && (!isset($this->loadedClasses[$this->foundClasses[$fileName]]))) {
                        // File is found and not loaded so load it only once
-                       //* DEBUG: */ echo "LOAD: ".$fileName." - Start<br />\n";
-                       require($this->classes[$fileName]);
-                       //* DEBUG: */ echo "LOAD: ".$fileName." - End<br />\n";
+                       /* NOISY-DEBUG: */ printf('[%s:%d] LOAD: %s - START' . PHP_EOL, __METHOD__, __LINE__, $fileName);
+                       require($this->foundClasses[$fileName]);
+                       /* NOISY-DEBUG: */ printf('[%s:%d] LOAD: %s - END' . PHP_EOL, __METHOD__, __LINE__, $fileName);
 
-                       // Count this include
+                       // Count this loaded class/interface/exception
                        $this->total++;
 
-                       // Mark this class as loaded
-                       array_push($this->loadedClasses, $this->classes[$fileName]);
+                       // Mark this class as loaded for other purposes than loading it.
+                       $this->loadedClasses[$this->foundClasses[$fileName]] = TRUE;
 
-                       // Remove it from classes list
-                       unset($this->classes[$fileName]);
+                       // Remove it from classes list so it won't be found twice.
+                       /* NOISY-DEBUG: */ printf('[%s:%d] UNSET: %s' . PHP_EOL, __METHOD__, __LINE__, $fileName);
+                       unset($this->foundClasses[$fileName]);
 
                        // Developer mode excludes caching (better debugging)
                        if (!defined('DEVELOPER')) {
                                // Reset cache
+                               /* NOISY-DEBUG: */ printf('[%s:%d] classesCached=FALSE' . PHP_EOL, __METHOD__, __LINE__);
                                $this->classesCached = FALSE;
                        } // END - if
-               } // END - if
+               } else {
+                       // Not found
+                       /* NOISY-DEBUG: */ printf('[%s:%d] 404: %s' . PHP_EOL, __METHOD__, __LINE__, $fileName);
+               }
        }
 
        /**
@@ -414,14 +481,17 @@ class ClassLoader {
         */
        private function includeExtraConfigs () {
                // Run through all class names (should not be much)
-               foreach ($this->classes as $fileName => $fqfn) {
+               foreach ($this->foundClasses as $fileName => $fqfn) {
                        // Is this a config?
                        if (substr($fileName, 0, strlen($this->prefix)) == $this->prefix) {
                                // Then include it
+                               /* NOISY-DEBUG: */ printf('[%s:%d] LOAD: %s - START' . PHP_EOL, __METHOD__, __LINE__, $fileName);
                                require($fqfn);
+                               /* NOISY-DEBUG: */ printf('[%s:%d] LOAD: %s - END' . PHP_EOL, __METHOD__, __LINE__, $fileName);
 
                                // Remove it from the list
-                               unset($this->classes[$fileName]);
+                               /* NOISY-DEBUG: */ printf('[%s:%d] UNSET: %s' . PHP_EOL, __METHOD__, __LINE__, $fileName);
+                               unset($this->foundClasses[$fileName]);
                        } // END - if
                } // END - foreach
        }
@@ -436,7 +506,7 @@ class ClassLoader {
        }
 
        /**
-        * Getter for a printable list of included classes/interfaces/exceptions
+        * Getter for a printable list of included main/interfaces/exceptions
         *
         * @param       $includeList    A printable include list
         */
@@ -450,7 +520,5 @@ class ClassLoader {
                // And return it
                return $includeList;
        }
-}
 
-// [EOF]
-?>
+}