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<?php |
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/** |
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* Created by PhpStorm. |
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* User: egorov |
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* Date: 06.01.2015 |
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* Time: 16:59 |
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*/ |
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namespace samsonphp\config; |
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use samsonphp\event\Event; |
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/** |
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* Configuration scheme manager |
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* @package samsonphp\config |
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*/ |
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class Manager |
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{ |
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/** @var array Collection of file path -> class loaded */ |
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protected static $classes = array(); |
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/** @var array Collection of files in current init */ |
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protected static $files = array(); |
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/** |
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* Load all entity configuration classes in specific location. |
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* |
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* All module files must match Entity::FILE_PATTERN to be |
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* loaded. |
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* |
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* @param string $path Path for importing classes |
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*/ |
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public static function import($path) |
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{ |
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// Read all files in path |
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self::$files = glob($path .'/'. Entity::FILE_PATTERN); |
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// Fill array of entity files with keys of file names without extension |
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foreach (self::$files as $file) { |
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$file = realpath($file); |
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// If we have not already loaded this class before with other schemes |
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if (!isset(self::$classes[$file])) { |
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// Store loaded classes |
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$classes = get_declared_classes(); |
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// Load entity configuration file |
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require_once($file); |
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// Get loaded class - store class to static collection |
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$classes = array_diff(get_declared_classes(), $classes); |
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self::$classes[$file] = end($classes); |
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} |
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} |
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} |
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/** @var Scheme[] Collection of available schemes */ |
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public $schemes = array(); |
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/** @var Scheme Pointer to current active configuration scheme */ |
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protected $active; |
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/** |
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* Initialize all configuration logic |
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*/ |
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public function __construct() |
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{ |
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// Add class auto loader |
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spl_autoload_register(array($this, 'autoload')); |
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// Subscribe active configuration scheme to core module configure event |
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Event::subscribe('core.environment.change', array($this, 'change')); |
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} |
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/** |
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* Configuration class autoloader. |
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* It helps resolve single configuration entity configuration dependencies |
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* @param string $className Class name for loading |
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*/ |
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public function autoload($className) |
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{ |
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// If namespace is present |
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$class = substr($className, strrpos($className, '\\')+1); |
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// Try to find class file by class name without namespace |
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$matches = preg_grep('/'.$class.'/i', self::$files); |
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if (sizeof($matches)) { |
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require_once(end($matches)); |
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} |
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} |
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/** |
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* Switch active environment |
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* @param string $environment Configuration environment identifier |
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*/ |
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public function change($environment = Scheme::BASE) |
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{ |
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// Switch to configuration environment |
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$this->active = & $this->schemes[$environment]; |
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// Subscribe active configuration scheme to core module configure event |
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Event::subscribe('core.module.configure', array($this, 'configure')); |
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// If we have successfully changed configuration scheme |
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if (!isset($this->active)) { |
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// Signal error |
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Event::fire( |
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'error', |
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array( |
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$this, |
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'Cannot change configuration scheme to ['.$environment.'] - Configuration scheme does not exists' |
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) |
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); |
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// Set global scheme as active |
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$this->active = & $this->schemes[Scheme::BASE]; |
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} |
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} |
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/** |
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* Initialize all configuration logic |
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* @param string $basePath Path to configuration base folder |
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*/ |
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public function init($basePath) |
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{ |
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// Create global scheme instance |
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$this->create($basePath, Scheme::BASE); |
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// Switch to global environment |
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$this->change(); |
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// Read all directories in base configuration path |
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foreach (glob($basePath . '*', GLOB_ONLYDIR) as $path) { |
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// Create new configuration scheme |
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$this->create($path); |
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} |
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} |
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/** |
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* Create configuration scheme |
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* @param string $path Path to configuration scheme folder |
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* @param string $environment Configuration scheme environment identifier |
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*/ |
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public function create($path, $environment = null) |
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{ |
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// Import all valid entity configuration classes from path |
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self::import($path); |
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// If no environment identifier is passed - use it from path |
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$environment = !isset($environment) ? basename($path) : $environment; |
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// Pointer to a configuration scheme |
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$pointer = & $this->schemes[$environment]; |
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// Check if have NOT already created configuration for this environment |
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if (!isset($pointer)) { |
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$pointer = new Scheme(realpath($path . '/'), $environment); |
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} else { // Load data to existing configuration scheme |
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$pointer->load(realpath($path . '/')); |
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} |
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} |
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/** |
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* Configure object with current configuration scheme entity parameters. |
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* |
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* If now $identifier is passed - automatic identifier generation |
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* will take place from object class name. |
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* |
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* If additional parameters key=>value collection is passed, they |
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* will be used to configure object instead of entity configuration |
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* class. |
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* |
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* If current configuration scheme has no entity configuration for |
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* passed object - global configuration scheme will be used. |
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* |
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* @param mixed $object Object for configuration with entity |
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* @param string $identifier Configuration entity name |
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* @param array|null $params Collection of configuration parameters |
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*/ |
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public function configure(& $object, $identifier = null, $params = null) |
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{ |
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// Try to configure using current scheme |
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if (!$this->active->configure($object, $identifier, $params)) { |
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// Get pointer to global scheme |
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$base = & $this->schemes[Scheme::BASE]; |
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if (isset($base) && $base !== $this->active) { |
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// Call global scheme for configuration |
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$base->configure($object, $identifier, $params); |
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} |
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} |
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} |
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} |
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SamsonPHP /
config
