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| <?php | |
| namespace Environaut\Config; | |
| use Environaut\Config\IConfigHandler; | |
| use Environaut\Config\Config; | |
| use Environaut\Config\Parameters; | |
| /** | |
| * Base class that may be used for custom config handlers. | |
| * Implements basic config data merging from multiple locations. | |
| */ | |
| abstract class BaseConfigHandler implements IConfigHandler | |
| { | |
| /** | |
| * @var array of locations (usually file/directory paths) | |
| */ | |
| protected $locations; | |
| /** | |
| * @var Parameters array of data to customize config handler wrapped in a Parameters instance | |
| */ | |
| protected $parameters; | |
| /** | |
| * Create new instance of the concrete config handler. | |
| * | |
| * @param array $locations set of locations to lookup configs to merge | |
| * @param array $parameters to customize the config file lookup/handling | |
| */ | |
| public function __construct(array $locations = array(), array $parameters = array()) | |
| { | |
| $this->locations = $locations; | |
| $this->parameters = new Parameters($parameters); | |
| } | |
| /** | |
| * Returns the currently (read and merged) config data | |
| * as a concrete IConfig implementating class. | |
| * | |
| * @return IConfig | |
| */ | |
| public function getConfig() | |
| { | |
| return new Config($this->getMergedConfig()); | |
| } | |
| /** | |
| * Adds the given location to the set of locations to check for configs. | |
| * | |
| * @param mixed $location location to check for config files (usually a file/directory path) | |
| * | |
| * @throws \InvalidArgumentException if given location is not readable | |
| */ | |
| public function addLocation($location) | |
| { | |
| if (!is_readable($location)) { | |
| throw new \InvalidArgumentException("Given location is not readable: $location"); | |
| } | |
| $this->locations[] = $location; | |
| } | |
| /** | |
| * Set the locations to check for config files. | |
| * | |
| * @param array $locations set of locations (usually file/directory paths) | |
| */ | |
| public function setLocations(array $locations) | |
| { | |
| foreach ($locations as $location) { | |
| $this->addLocation($location); | |
| } | |
| } | |
| /** | |
| * @return array of locations used for config file lookups | |
| */ | |
| public function getLocations() | |
| { | |
| return $this->locations; | |
| } | |
| /** | |
| * @return array of config data | |
| */ | |
| protected function getMergedConfig() | |
| { | |
| $config_data = array(); | |
| foreach ($this->getLocations() as $location) { | |
| $more_config_data = $this->readLocation($location); | |
| if (is_array($more_config_data)) { | |
| $config_data = array_merge_recursive($config_data, $more_config_data); | |
| } | |
| } | |
| return $config_data; | |
| } | |
| } |