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<?php |
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/* (c) Anton Medvedev <[email protected]> |
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* |
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* For the full copyright and license information, please view the LICENSE |
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* file that was distributed with this source code. |
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*/ |
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namespace Deployer\Server; |
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use Deployer\Type\DotArray; |
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class Environment |
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{ |
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const DEPLOY_PATH = 'deploy_path'; |
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/** |
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* Globally defaults values. |
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* |
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* @var \Deployer\Type\DotArray |
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*/ |
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private static $defaults = null; |
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/** |
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* Array of env values. |
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* @var \Deployer\Type\DotArray |
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*/ |
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private $values = null; |
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/** |
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* Values represented by their keys here are protected, and cannot be |
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* changed by calling the `set` method. |
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* @var array |
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*/ |
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private $protectedNames = []; |
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/** |
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* Constructor |
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*/ |
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public function __construct() |
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{ |
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$this->values = new DotArray(); |
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} |
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/** |
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* @param string $name |
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* @param bool|int|string|array $value |
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*/ |
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public function set($name, $value) |
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{ |
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$this->checkIfNameIsProtected($name); |
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$this->values[$name] = $value; |
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} |
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/** |
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* @param string $name |
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* @param bool|int|string|array $value |
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*/ |
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public function setAsProtected($name, $value) |
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{ |
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$this->set($name, $value); |
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$this->protectedNames[] = $name; |
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} |
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/** |
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* Checks whether the given name was registered as protected, or if there is |
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* a protected parameter which would be overwritten. |
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* @param string $name |
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* @throws \RuntimeException if the value already exists and is protected. |
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* @throws \RuntimeException if there's a protected parameter which would |
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* be overwritten. |
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*/ |
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private function checkIfNameIsProtected($name) |
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{ |
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$length = strlen($name); |
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foreach ($this->protectedNames as $protectedName) { |
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$len = strlen($protectedName); |
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if ($name === $protectedName) { |
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throw new \RuntimeException("The parameter `$name` cannot be set, because it's protected."); |
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} elseif ($len < $length && '.' === $name[$len] && 0 === strpos($name, $protectedName)) { |
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throw new \RuntimeException("The parameter `$name` cannot be set, because `$protectedName` is protected."); |
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} elseif ($len > $length && '.' === $protectedName[$length] && 0 === strpos($protectedName, $name)) { |
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throw new \RuntimeException("The parameter `$name` could not be set, because a protected parameter named `$protectedName` already exists."); |
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} |
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} |
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} |
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/** |
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* @param string $name |
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* @param bool|int|string|array $default |
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* @return bool|int|string|array |
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* @throws \RuntimeException |
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*/ |
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public function get($name, $default = null) |
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{ |
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if ($this->values->hasKey($name)) { |
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$value = $this->values[$name]; |
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} else { |
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if (null !== self::$defaults && isset(self::$defaults[$name])) { |
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if (is_callable(self::$defaults[$name])) { |
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$value = $this->values[$name] = call_user_func(self::$defaults[$name]); |
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} else { |
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$value = $this->values[$name] = self::$defaults[$name]; |
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} |
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} else { |
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if (null === $default) { |
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throw new \RuntimeException("Environment parameter `$name` does not exists."); |
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} else { |
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$value = $default; |
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} |
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} |
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} |
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return $this->parse($value); |
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} |
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/** |
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* Checks if env var exists. |
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* |
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* @param string $name |
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* @return bool |
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*/ |
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public function has($name) |
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{ |
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return $this->values->hasKey($name); |
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} |
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/** |
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* @param string $name |
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* @return mixed |
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*/ |
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View Code Duplication |
public static function getDefault($name) |
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{ |
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if (null === self::$defaults) { |
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self::$defaults = new DotArray(); |
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} |
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return self::$defaults[$name]; |
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} |
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/** |
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* @param string $name |
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* @param mixed $value |
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*/ |
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View Code Duplication |
public static function setDefault($name, $value) |
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{ |
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if (null === self::$defaults) { |
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1 |
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self::$defaults = new DotArray(); |
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} |
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self::$defaults[$name] = $value; |
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} |
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/** |
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* Parse env values. |
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* |
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* @param string $value |
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* @return string |
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*/ |
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public function parse($value) |
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{ |
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if (is_string($value)) { |
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$value = preg_replace_callback('/\{\{\s*([\w\.]+)\s*\}\}/', [$this, 'parseCallback'], $value); |
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} |
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return $value; |
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} |
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/** |
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* Replace env values callback for parse |
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* |
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* @param array $matches |
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* @return mixed |
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*/ |
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private function parseCallback($matches) |
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{ |
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return isset($matches[1]) ? $this->get($matches[1]) : null; |
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} |
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} |
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