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<?php |
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namespace Subreality\Dilmun\Nabu; |
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/** |
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* Nabu was the god of writing and scribes and was the keeper of the Tablets of |
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* Destiny, in which the fate of humankind was recorded. |
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* |
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* @author derek |
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*/ |
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class Autoloader |
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{ |
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/** @var Logger */ |
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protected $logger; |
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protected $packages = array(); |
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/** |
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* Automatically initializes logging using the System handler |
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*/ |
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public function __construct() |
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{ |
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} |
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/** |
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* Registers the includeClass function as an autoloader. |
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* |
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* @see Autoloader::includeClass |
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*/ |
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public function register() |
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{ |
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spl_autoload_register(array($this,"includeClass")); |
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} |
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/** |
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* @param $package |
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* @param $path |
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*/ |
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public function registerPackages($package, $path) |
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{ |
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$this->updateLog("info", "Preparing {$package} package for registration."); |
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$this->updateLog("debug", "Parameters: package = {$package}, path = {$path}"); |
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$package = trim($package, "\\"); |
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$package = $package . "\\"; |
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$path = rtrim($path, "/"); |
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$path = $path . "/"; |
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$this->updateLog("debug", "Registering index {$package} with {$path}"); |
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$this->packages[$package][] = $path; |
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$this->updateLog("info", "Registered index {$package} as {$path}"); |
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} |
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/** |
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* Includes the file corresponding with the class name to be autoloaded. |
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* |
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* @param callable $class class name as defined by PHP autoloading |
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* |
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* @return string|false The path to the class on success; otherwise false |
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*/ |
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protected function includeClass($class) |
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{ |
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$this->updateLog("info", "Setting up {$class} class for inclusion."); |
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$package_found = false; |
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$package_loaded = false; |
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foreach ($this->packages as $package => $sources) { |
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if (strpos($class, $package) !== false) { |
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$package_found = true; |
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$package_strlen = strlen($package); |
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$class_path = substr($class, $package_strlen); |
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$this->updateLog("debug", "Found package {$package} and class path {$class_path} in class {$class}"); |
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$package_loaded = $this->loadPackage($package, $class_path); |
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} |
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} |
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if (!$package_found) { |
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$this->updateLog("alert", "No registered packages found for {$class}!"); |
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} |
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return $package_loaded; |
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} |
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/** |
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* Loads a package based on registered paths associated with the package. |
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* |
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* @param string $package_name The name of the package in Vendor\Package format |
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* @param string $class_name The full, relative name of the class with the vendor and package names stripped |
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* |
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* @return false|string The path to the class on success; otherwise false |
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*/ |
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protected function loadPackage($package_name, $class_name) |
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{ |
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$this->updateLog("info", "Working on loading {$class_name} from {$package_name}"); |
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$class_path = false; |
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if (isset($this->packages[$package_name])) { |
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$this->updateLog("debug", "Package index of {$package_name} is set."); |
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foreach ($this->packages[$package_name] as $path) { |
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$converted_class = str_replace('\\', '/', $class_name); |
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$class_path = $path . $converted_class . ".php"; |
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$this->updateLog("debug", "Class file path is {$class_path}"); |
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if (file_exists($class_path)) { |
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$this->updateLog("debug", "File {$class_path} exists; including file"); |
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/** @noinspection PhpIncludeInspection */ |
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include $class_path; |
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$this->updateLog("info", "Completed loading {$class_path}"); |
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} else { |
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$this->updateLog("debug", "File {$class_path} does not exist"); |
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$class_path = false; |
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} |
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} |
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} |
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return $class_path; |
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} |
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/** |
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* Allows overriding the default file logger created at construction |
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* |
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* @param Logger $logger |
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*/ |
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public function setLogger(Logger $logger) |
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{ |
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$this->logger = $logger; |
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} |
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/** |
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* Gets the Logger set for the Autoloader |
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* |
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* @return Logger |
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*/ |
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public function getLogger() |
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{ |
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return $this->logger; |
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} |
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/** |
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* If it exists, logs the message at the supplied level using the set Logger |
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* |
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* @param string $level The log level for the message |
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* @param string $message The message to be logged |
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* |
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* @return bool Returns true if the message was logged |
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* returns false if the message was not logged |
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*/ |
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private function updateLog($level, $message) |
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{ |
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if ($this->logger instanceof Logger) { |
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$this->logger->$level($message); |
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$message_logged = true; |
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} else { |
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$message_logged = false; |
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} |
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return $message_logged; |
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} |
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} |
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twistofreality /
dilmun
