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<?php |
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/* |
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* @copyright (c) 2019 Mendel <[email protected]> |
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* @license see license.txt |
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*/ |
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namespace drycart\data; |
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/** |
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* Wrapper for pretty access to field |
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* Used for deep access to some data at some unknown data |
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* |
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* fieldName for example forum.moderators.first().name work correct for any of this sence: |
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* $data->forum->moderators->first()->name |
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* $data['forum']['moderators']->first()['name'] |
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* $data['forum']->moderators->first()['name'] |
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* etc... |
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* |
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* Object field is priority option, second is array, after this we try method, |
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* so if exist something like this, it will be used |
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* $data['forum']->moderators['first()']['name'] |
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* |
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* methods parameters not supports at any format |
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*/ |
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class GetterHelper |
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{ |
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/** |
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* Get some data by pretty name |
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* |
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* @param array|object $data data for pretty access |
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* @param string $name name for access |
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* @param bool $safe if true - Exception for not exist fields |
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* @return mixed |
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* @throws \UnexpectedValueException |
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*/ |
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public static function get($data, string $name, bool $safe = true) |
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{ |
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$fields = explode('.', $name); |
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foreach ($fields as $key) { |
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$data = static::subGet($data, $key, $safe); |
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} |
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return $data; |
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} |
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/** |
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* Get iterator for data |
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* |
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* @param mixed $data |
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* @return \Traversable |
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*/ |
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public static function getIterator($data): \Traversable |
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{ |
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if(is_a($data, \Traversable::class)) { |
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return $data; |
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} elseif(is_array($data)) { |
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return new \ArrayIterator($data); |
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} else { |
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return new \ArrayIterator((array) $data); |
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} |
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} |
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/** |
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* Get keys list for data |
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* |
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* @param mixed $data |
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* @return array |
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*/ |
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public static function getKeys($data) : array |
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{ |
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if(is_object($data) and is_a($data, ModelInterface::class)) { |
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return $data->keys(); |
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} elseif(is_array($data)) { |
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return array_keys($data); |
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} elseif(is_a($data, \ArrayObject::class)) { |
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$arr = $data->getArrayCopy(); |
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return array_keys($arr); |
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} elseif(is_a($data, \Traversable::class)) { |
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$arr = iterator_to_array($data); |
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return array_keys($arr); |
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} else { |
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$arr = (array) $data; |
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return array_keys($arr); |
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} |
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} |
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/** |
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* One level get |
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* |
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* @param type $data |
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* @param string $key |
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* @param bool $safe |
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* @return mixed |
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* @throws \UnexpectedValueException |
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*/ |
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protected static function subGet($data, string $key, bool $safe = true) |
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{ |
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if (static::isArrayable($data) and isset($data[$key])) { |
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return $data[$key]; |
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} |
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if (is_object($data) AND isset($data->{$key})) { |
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return $data->{$key}; |
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} |
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// Methods magic... |
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$method = static::tryGetMethodName($key); |
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if (!is_null($method) and method_exists($data, $method)) { |
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return call_user_func_array([$data, $method], []); |
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} |
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if ($safe) { |
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throw new \UnexpectedValueException("Bad field name $key"); |
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} |
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return null; |
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} |
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/** |
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* Check if data is array or ArrayAccess |
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* @param type $data |
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* @return bool |
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*/ |
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protected static function isArrayable($data) : bool |
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{ |
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return is_array($data) OR is_a($data, \ArrayAccess::class); |
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} |
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/** |
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* Check if key is methods name (i.e. finished to "()") |
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* and return methods name |
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* |
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* @param string $key |
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* @return string|null |
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*/ |
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protected static function tryGetMethodName(string $key) : ?string |
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{ |
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if(substr($key, -2) == '()') { |
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return substr($key, 0, -2); |
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} |
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return null; |
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} |
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} |
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