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<?php |
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namespace Jlis\Judge\Judges; |
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use Jlis\Judge\Contracts\VoterInterface; |
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use Jlis\Judge\Adapters\AdapterInterface; |
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/** |
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* @author Julius Ehrlich <[email protected]> |
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*/ |
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class Judge |
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{ |
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const RULE_PARAM_DELIMITER = ':'; |
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const RULE_INVERTER = '!'; |
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const FIELD_VALUE = 'value'; |
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const FIELD_FILTERS = 'filters'; |
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/** |
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* @var AdapterInterface |
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*/ |
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protected $adapter; |
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/** |
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* @var VoterInterface[] |
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*/ |
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protected $voters = []; |
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/** |
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* Constructor. |
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* |
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* @param AdapterInterface $adapter |
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* @param VoterInterface[] $voters |
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*/ |
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public function __construct(AdapterInterface $adapter, array $voters = []) |
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{ |
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$this->adapter = $adapter; |
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$this->voters = $voters; |
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} |
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/** |
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* Decides multiple rules. |
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* |
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* @param string|array $rules |
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* @param mixed $user |
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* |
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* @return bool |
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*/ |
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protected function decideRules($rules, $user = null) |
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{ |
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if (is_string($rules)) { |
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return $this->decideRule($rules, $user); |
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} |
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if (! is_array($rules) || empty($rules)) { |
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return false; |
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} |
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if (isset($rules[self::FIELD_VALUE]) && ! isset($rules[self::FIELD_FILTERS])) { |
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return $rules[self::FIELD_VALUE]; |
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} |
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if (array_key_exists(self::FIELD_VALUE, $rules) && array_key_exists(self::FIELD_FILTERS, $rules)) { |
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if ($this->decideRules($rules[self::FIELD_FILTERS], $user)) { |
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return $rules[self::FIELD_VALUE]; |
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} |
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return false; |
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} |
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foreach ($rules as $subRules) { |
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if (! $this->decideRule($subRules, $user)) { |
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return false; |
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} |
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} |
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return true; |
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} |
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/** |
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* Decides a single rule. |
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* |
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* @param string $rule |
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* @param mixed $user |
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* |
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* @return bool |
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*/ |
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protected function decideRule($rule, $user = null) |
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{ |
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$parameter = null; |
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$additional = []; |
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$negative = false; |
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if (0 === strpos($rule, self::RULE_INVERTER)) { |
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$negative = true; |
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$rule = substr($rule, 1); |
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} |
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if (false !== strpos($rule, self::RULE_PARAM_DELIMITER)) { |
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$splits = explode(self::RULE_PARAM_DELIMITER, $rule); |
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$rule = array_shift($splits); |
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$parameter = array_shift($splits); |
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if (! empty($splits)) { |
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$additional = $splits; |
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} |
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} |
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if (! isset($this->voters[strtolower($rule)])) { |
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return false; |
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} |
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$voter = $this->voters[strtolower($rule)]; |
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if (! is_object($voter)) { |
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if (! class_exists($voter)) { |
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return false; |
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} |
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$voter = new $voter(); |
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} |
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if (! $voter instanceof VoterInterface) { |
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return false; |
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} |
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$result = $voter->vote($parameter, $user, $additional); |
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return $negative ? (false === $result) : $result; |
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} |
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} |
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jlis /
judge
