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<?php |
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namespace League\JsonGuard\Constraints; |
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use League\JsonGuard\Assert; |
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use League\JsonGuard\SubSchemaValidatorFactory; |
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use League\JsonGuard\ValidationError; |
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class AdditionalItems implements ParentSchemaAwareContainerInstanceConstraint |
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{ |
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const KEYWORD = 'additionalItems'; |
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/** |
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* {@inheritdoc} |
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*/ |
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public static function validate( |
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$data, |
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$schema, |
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$parameter, |
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SubSchemaValidatorFactory $validatorFactory, |
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$pointer = null |
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) { |
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Assert::type($parameter, ['boolean', 'object'], self::KEYWORD, $pointer); |
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if (!is_array($data) || $parameter === true) { |
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return null; |
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} |
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if (!is_array($items = self::getItems($schema))) { |
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return null; |
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} |
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if ($parameter === false) { |
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return self::validateAdditionalItemsWhenNotAllowed($data, $items, $pointer); |
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} elseif (is_object($parameter)) { |
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$additionalItems = array_slice($data, count($items)); |
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return self::validateAdditionalItemsAgainstSchema( |
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$additionalItems, |
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$parameter, |
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$validatorFactory, |
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$pointer |
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); |
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} |
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return null; |
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} |
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/** |
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* @param object $schema |
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* |
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* @return mixed |
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*/ |
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private static function getItems($schema) |
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{ |
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return property_exists($schema, 'items') ? $schema->items : null; |
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} |
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/** |
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* @param array $items |
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* @param object $schema |
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* @param \League\JsonGuard\SubSchemaValidatorFactory $validatorFactory |
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* @param string $pointer |
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* |
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* @return array |
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*/ |
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private static function validateAdditionalItemsAgainstSchema( |
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$items, |
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$schema, |
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SubSchemaValidatorFactory $validatorFactory, |
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$pointer |
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) { |
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$errors = []; |
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foreach ($items as $key => $item) { |
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// Escaping isn't necessary since the key is always numeric. |
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$currentPointer = $pointer . '/' . $key; |
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$validator = $validatorFactory->makeSubSchemaValidator($item, $schema, $currentPointer); |
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$errors = array_merge($errors, $validator->errors()); |
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} |
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return $errors; |
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} |
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/** |
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* @param array $data |
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* @param array $items |
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* @param $pointer |
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* |
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* @return \League\JsonGuard\ValidationError |
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*/ |
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private static function validateAdditionalItemsWhenNotAllowed($data, $items, $pointer) |
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{ |
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if (count($data) > count($items)) { |
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return new ValidationError( |
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'Additional items are not allowed.', |
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self::KEYWORD, |
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$data, |
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$pointer |
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); |
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} |
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} |
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} |
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thephpleague /
json-guard
