3 namespace CoreFramework\Loader;
5 // Import framework stuff
6 use CoreFramework\Bootstrap\FrameworkBootstrap;
7 use CoreFramework\Configuration\FrameworkConfiguration;
10 use \InvalidArgumentException;
11 use \RecursiveDirectoryIterator;
12 use \RecursiveIteratorIterator;
15 * This class loads class include files with a specific prefix and suffix
17 * @author Roland Haeder <webmaster@shipsimu.org>
19 * @copyright Copyright (c) 2007, 2008 Roland Haeder, 2009 - 2017 Core Developer Team
20 * @license GNU GPL 3.0 or any newer version
21 * @link http://www.shipsimu.org
23 * This program is free software: you can redistribute it and/or modify
24 * it under the terms of the GNU General Public License as published by
25 * the Free Software Foundation, either version 3 of the License, or
26 * (at your option) any later version.
28 * This program is distributed in the hope that it will be useful,
29 * but WITHOUT ANY WARRANTY; without even the implied warranty of
30 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
31 * GNU General Public License for more details.
33 * You should have received a copy of the GNU General Public License
34 * along with this program. If not, see <http://www.gnu.org/licenses/>.
36 * ----------------------------------
38 * - Namespace scheme Project\Package[\SubPackage...] is fully supported and
39 * throws an InvalidArgumentException if not present. The last part will be
40 * always the class' name.
42 * - Some comments improved, other minor improvements
44 * - Constructor is now empty and factory method 'createClassLoader' is created
45 * - renamed loadClasses to scanClassPath
46 * - Added initLoader()
48 * - ClassLoader rewritten to PHP SPL's own RecursiveIteratorIterator class
50 * - loadClasses rewritten to fix some notices
53 * ----------------------------------
57 * Instance of this class
59 private static $selfInstance = NULL;
62 * Array with all found classes
64 private $foundClasses = array();
67 * List of loaded classes
69 private $loadedClasses = array();
72 * Suffix with extension for all class files
74 private $prefix = 'class_';
77 * Suffix with extension for all class files
79 private $suffix = '.php';
82 * A list for directory names (no leading/trailing slashes!) which not be scanned by the path scanner
85 private $ignoreList = array();
88 * Debug this class loader? (true = yes, false = no)
90 private $debug = false;
93 * Whether the file list is cached
95 private $listCached = false;
98 * Wethe class content has been cached
100 private $classesCached = false;
103 * Filename for the list cache
105 private $listCacheFQFN = '';
108 * Cache for class content
110 private $classCacheFQFN = '';
113 * Counter for loaded include files
118 * By default the class loader is strict with naming-convention check
120 private static $strictNamingConventionCheck = true;
123 * Framework/application paths for classes, etc.
125 private static $frameworkPaths = array(
126 'exceptions', // Exceptions
127 'interfaces', // Interfaces
128 'classes', // Classes
129 'middleware' // The middleware
133 * Registered paths where test classes can be found. These are all relative
136 private static $testPaths = array();
139 * The protected constructor. Please use the factory method below, or use
140 * getSelfInstance() for singleton
144 protected function __construct () {
145 // This is empty for now
149 * The destructor makes it sure all caches got flushed
153 public function __destruct () {
154 // Skip here if dev-mode
155 if (defined('DEVELOPER')) {
159 // Skip here if already cached
160 if ($this->listCached === false) {
161 // Writes the cache file of our list away
162 $cacheContent = json_encode($this->foundClasses);
163 file_put_contents($this->listCacheFQFN, $cacheContent);
166 // Skip here if already cached
167 if ($this->classesCached === false) {
168 // Generate a full-cache of all classes
170 foreach (array_keys($this->loadedClasses) as $fqfn) {
172 $cacheContent .= file_get_contents($fqfn);
176 file_put_contents($this->classCacheFQFN, $cacheContent);
181 * Creates an instance of this class loader for given configuration instance
183 * @param $configInstance Configuration class instance
186 public static final function createClassLoader (FrameworkConfiguration $configInstance) {
187 // Get a new instance
188 $loaderInstance = new ClassLoader();
191 $loaderInstance->initLoader($configInstance);
193 // Return the prepared instance
194 return $loaderInstance;
198 * Scans for all framework classes, exceptions and interfaces.
202 public static function scanFrameworkClasses () {
204 //* NOISY-DEBUG: */ printf('[%s:%d]: CALLED!' . PHP_EOL, __METHOD__, __LINE__);
206 // Get loader instance
207 $loaderInstance = self::getSelfInstance();
209 // Get config instance
210 $cfg = FrameworkConfiguration::getSelfInstance();
213 foreach (self::$frameworkPaths as $shortPath) {
215 //* NOISY-DEBUG: */ printf('[%s:%d]: shortPath=%s' . PHP_EOL, __METHOD__, __LINE__, $shortPath);
217 // Generate full path from it
218 $pathName = realpath(sprintf(
220 $cfg->getConfigEntry('framework_base_path'),
225 //* NOISY-DEBUG: */ printf('[%s:%d]: pathName=%s' . PHP_EOL, __METHOD__, __LINE__, $pathName);
227 // Is it not false and accessible?
228 if (is_bool($pathName)) {
231 } elseif (!is_readable($pathName)) {
232 // @TODO Throw exception instead of break
236 // Try to load the framework classes
237 $loaderInstance->scanClassPath($pathName);
241 //* NOISY-DEBUG: */ printf('[%s:%d]: EXIT!' . PHP_EOL, __METHOD__, __LINE__);
245 * Scans for application's classes, etc.
249 public static function scanApplicationClasses () {
251 //* NOISY-DEBUG: */ printf('[%s:%d]: CALLED!' . PHP_EOL, __METHOD__, __LINE__);
253 // Get loader instance
254 $loaderInstance = self::getSelfInstance();
256 // Get config instance
257 $cfg = FrameworkConfiguration::getSelfInstance();
259 // Load all classes for the application
260 foreach (self::$frameworkPaths as $shortPath) {
262 //* NOISY-DEBUG: */ printf('[%s:%d]: shortPath=%s' . PHP_EOL, __METHOD__, __LINE__, $shortPath);
265 $pathName = realpath(sprintf(
267 $cfg->getConfigEntry('application_base_path'),
268 $cfg->getConfigEntry('detected_app_name'),
273 //* NOISY-DEBUG: */ printf('[%s:%d]: pathName[%s]=%s' . PHP_EOL, __METHOD__, __LINE__, gettype($pathName), $pathName);
275 // Is the path readable?
276 if (is_dir($pathName)) {
277 // Try to load the application classes
278 $loaderInstance->scanClassPath($pathName);
283 //* NOISY-DEBUG: */ printf('[%s:%d]: EXIT!' . PHP_EOL, __METHOD__, __LINE__);
287 * Scans for test classes, etc.
291 public static function scanTestsClasses () {
293 //* NOISY-DEBUG: */ printf('[%s:%d]: CALLED!' . PHP_EOL, __METHOD__, __LINE__);
295 // Get config instance
296 $cfg = FrameworkConfiguration::getSelfInstance();
298 // Load all classes for the application
299 foreach (self::$testPaths as $shortPath) {
301 //* NOISY-DEBUG: */ printf('[%s:%d]: shortPath=%s' . PHP_EOL, __METHOD__, __LINE__, $shortPath);
303 // Construct path name
306 $cfg->getConfigEntry('root_base_path'),
311 //* NOISY-DEBUG: */ printf('[%s:%d]: pathName[%s]=%s - BEFORE!' . PHP_EOL, __METHOD__, __LINE__, gettype($pathName), $pathName);
314 $pathName = realpath($pathName);
317 //* NOISY-DEBUG: */ printf('[%s:%d]: pathName[%s]=%s - AFTER!' . PHP_EOL, __METHOD__, __LINE__, gettype($pathName), $pathName);
319 // Is the path readable?
320 if ((is_dir($pathName)) && (is_readable($pathName))) {
321 // Try to load the application classes
322 ClassLoader::getSelfInstance()->scanClassPath($pathName);
327 //* NOISY-DEBUG: */ printf('[%s:%d]: EXIT!' . PHP_EOL, __METHOD__, __LINE__);
331 * Enables or disables strict naming-convention tests on class loading
333 * @param $strictNamingConventionCheck Whether to strictly check naming-convention
336 public static function enableStrictNamingConventionCheck ($strictNamingConventionCheck = true) {
337 self::$strictNamingConventionCheck = $strictNamingConventionCheck;
341 * Registeres given relative path where test classes reside. For regular
342 * framework uses, they should not be loaded (and used).
344 * @param $relativePath Relative path to test classes
347 public static function registerTestsPath ($relativePath) {
349 //* NOISY-DEBUG: */ printf('[%s:%d]: relativePath=%s - CALLED!' . PHP_EOL, __METHOD__, __LINE__, $relativePath);
352 self::$testPaths[$relativePath] = $relativePath;
355 //* NOISY-DEBUG: */ printf('[%s:%d]: EXIT!' . PHP_EOL, __METHOD__, __LINE__);
361 * @param $className Name of the class to load
364 public static function autoLoad ($className) {
366 //* NOISY-DEBUG: */ printf('[%s:%d]: className=%s - CALLED!' . PHP_EOL, __METHOD__, __LINE__, $className);
368 // Try to include this class
369 self::getSelfInstance()->loadClassFile($className);
372 //* NOISY-DEBUG: */ printf('[%s:%d]: EXIT!' . PHP_EOL, __METHOD__, __LINE__);
376 * Singleton getter for an instance of this class
378 * @return $selfInstance A singleton instance of this class
380 public static final function getSelfInstance () {
381 // Is the instance there?
382 if (is_null(self::$selfInstance)) {
384 self::$selfInstance = ClassLoader::createClassLoader(FrameworkConfiguration::getSelfInstance());
387 // Return the instance
388 return self::$selfInstance;
392 * Scans recursively a local path for class files which must have a prefix and a suffix as given by $this->suffix and $this->prefix
394 * @param $basePath The relative base path to 'framework_base_path' constant for all classes
395 * @param $ignoreList An optional list (array forced) of directory and file names which shall be ignored
398 public function scanClassPath ($basePath, array $ignoreList = array() ) {
399 // Is a list has been restored from cache, don't read it again
400 if ($this->listCached === true) {
405 // Keep it in class for later usage
406 $this->ignoreList = $ignoreList;
409 * Ignore .htaccess by default as it is for protection of directories
412 array_push($ignoreList, '.htaccess');
415 * Set base directory which holds all our classes, an absolute path
416 * should be used here so is_dir(), is_file() and so on will always
417 * find the correct files and dirs.
419 $basePath2 = realpath($basePath);
421 // If the basePath is false it is invalid
422 if ($basePath2 === false) {
423 /* @TODO: Do not exit here. */
424 exit(__METHOD__ . ': Cannot read ' . $basePath . ' !' . PHP_EOL);
427 $basePath = $basePath2;
430 // Get a new iterator
431 //* NOISY-DEBUG: */ printf('[%s:%d] basePath=%s' . PHP_EOL, __METHOD__, __LINE__, $basePath);
432 $iteratorInstance = new RecursiveIteratorIterator(new RecursiveDirectoryIterator($basePath), RecursiveIteratorIterator::CHILD_FIRST);
435 while ($iteratorInstance->valid()) {
437 $currentEntry = $iteratorInstance->current();
439 // Get filename from iterator which is the class' name (according naming-convention)
440 $fileName = $currentEntry->getFileName();
442 // Get the "FQFN" (path and file name)
443 $fqfn = $currentEntry->getRealPath();
445 // Current entry must be a file, not smaller than 100 bytes and not on ignore list
446 if ((!$currentEntry->isFile()) || (in_array($fileName, $this->ignoreList)) || (filesize($fqfn) < 100)) {
447 // Advance to next entry
448 $iteratorInstance->next();
450 // Skip non-file entries
451 //* NOISY-DEBUG: */ printf('[%s:%d] SKIP: %s' . PHP_EOL, __METHOD__, __LINE__, $fileName);
455 // Is this file wanted?
456 //* NOISY-DEBUG: */ printf('[%s:%d] FOUND: %s' . PHP_EOL, __METHOD__, __LINE__, $fileName);
457 if ((substr($fileName, 0, strlen($this->prefix)) == $this->prefix) && (substr($fileName, -strlen($this->suffix), strlen($this->suffix)) == $this->suffix)) {
458 // Add it to the list
459 //* NOISY-DEBUG: */ printf('[%s:%d] ADD: %s,fqfn=%s' . PHP_EOL, __METHOD__, __LINE__, $fileName, $fqfn);
460 $this->foundClasses[$fileName] = $fqfn;
463 //* NOISY-DEBUG: */ printf('[%s:%d] NOT ADDED: %s,fqfn=%s' . PHP_EOL, __METHOD__, __LINE__, $fileName, $fqfn);
466 // Advance to next entry
467 //* NOISY-DEBUG: */ printf('[%s:%d] NEXT: %s' . PHP_EOL, __METHOD__, __LINE__, $fileName);
468 $iteratorInstance->next();
473 * Initializes our loader class
475 * @param $configInstance Configuration class instance
478 private function initLoader (FrameworkConfiguration $configInstance) {
479 // Set configuration instance
480 $this->configInstance = $configInstance;
482 // Construct the FQFN for the cache
483 if (!defined('DEVELOPER')) {
484 $this->listCacheFQFN = $this->configInstance->getConfigEntry('local_database_path') . 'list-' . $this->configInstance->getConfigEntry('detected_app_name') . '.cache';
485 $this->classCacheFQFN = $this->configInstance->getConfigEntry('local_database_path') . 'class-' . $this->configInstance->getConfigEntry('detected_app_name') . '.cache';
488 // Set suffix and prefix from configuration
489 $this->suffix = $configInstance->getConfigEntry('class_suffix');
490 $this->prefix = $configInstance->getConfigEntry('class_prefix');
493 self::$selfInstance = $this;
495 // Skip here if no dev-mode
496 if (defined('DEVELOPER')) {
500 // IS the cache there?
501 if (FrameworkBootstrap::isReadableFile($this->listCacheFQFN)) {
503 $cacheContent = file_get_contents($this->listCacheFQFN);
506 $this->foundClasses = json_decode($cacheContent);
508 // List has been restored from cache!
509 $this->listCached = true;
512 // Does the class cache exist?
513 if (FrameworkBootstrap::isReadableFile($this->listCacheFQFN)) {
515 FrameworkBootstrap::loadInclude($this->classCacheFQFN);
517 // Mark the class cache as loaded
518 $this->classesCached = true;
523 * Tries to find the given class in our list. This method ignores silently
524 * missing classes or interfaces. So if you use class_exists() this method
525 * does not interrupt your program.
527 * @param $className The class that shall be loaded
529 * @throws InvalidArgumentException If strict-checking is enabled and class name is not following naming-convention
531 private function loadClassFile ($className) {
533 //* NOISY-DEBUG: */ printf('[%s:%d] className=%s - CALLED!' . PHP_EOL, __METHOD__, __LINE__, $className);
535 // The class name should contain at least 2 back-slashes, so split at them
536 $classNameParts = explode("\\", $className);
538 // At least 3 parts should be there
539 if ((self::$strictNamingConventionCheck === true) && (count($classNameParts) < 3)) {
540 // Namespace scheme is: Project\Package[\SubPackage...]
541 throw new InvalidArgumentException(sprintf('Class name "%s" is not conform to naming-convention: Project\Package[\SubPackage...]\SomeFooBar', $className));
545 $shortClassName = array_pop($classNameParts);
547 // Create a name with prefix and suffix
548 $fileName = $this->prefix . $shortClassName . $this->suffix;
550 // Now look it up in our index
551 //* NOISY-DEBUG: */ printf('[%s:%d] ISSET: %s' . PHP_EOL, __METHOD__, __LINE__, $fileName);
552 if ((isset($this->foundClasses[$fileName])) && (!isset($this->loadedClasses[$this->foundClasses[$fileName]]))) {
553 // File is found and not loaded so load it only once
554 //* NOISY-DEBUG: */ printf('[%s:%d] LOAD: %s - START' . PHP_EOL, __METHOD__, __LINE__, $fileName);
555 FrameworkBootstrap::loadInclude($this->foundClasses[$fileName]);
556 //* NOISY-DEBUG: */ printf('[%s:%d] LOAD: %s - END' . PHP_EOL, __METHOD__, __LINE__, $fileName);
558 // Count this loaded class/interface/exception
561 // Mark this class as loaded for other purposes than loading it.
562 $this->loadedClasses[$this->foundClasses[$fileName]] = true;
564 // Remove it from classes list so it won't be found twice.
565 //* NOISY-DEBUG: */ printf('[%s:%d] UNSET: %s' . PHP_EOL, __METHOD__, __LINE__, $fileName);
566 unset($this->foundClasses[$fileName]);
568 // Developer mode excludes caching (better debugging)
569 if (!defined('DEVELOPER')) {
571 //* NOISY-DEBUG: */ printf('[%s:%d] classesCached=false' . PHP_EOL, __METHOD__, __LINE__);
572 $this->classesCached = false;
576 //* NOISY-DEBUG: */ printf('[%s:%d] 404: %s' . PHP_EOL, __METHOD__, __LINE__, $fileName);
581 * Getter for total include counter
583 * @return $total Total loaded include files
585 public final function getTotal () {
590 * Getter for a printable list of included main/interfaces/exceptions
592 * @param $includeList A printable include list
594 public function getPrintableIncludeList () {
597 foreach ($this->loadedClasses as $classFile) {
598 $includeList .= basename($classFile) . '<br />' . PHP_EOL;