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<?php |
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namespace Tuum\Form\Data; |
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use Traversable; |
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abstract class AbstractData implements \ArrayAccess, \IteratorAggregate |
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{ |
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/** |
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* @var array|object |
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*/ |
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protected $data = []; |
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/** |
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* @var callable|Escape |
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*/ |
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protected $escape; |
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/** |
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* @ param Message $message |
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* |
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* @param array|object $data |
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* @param null|callable $escape |
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*/ |
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public function __construct($data = [], $escape = null) |
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{ |
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$this->data = $data; |
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$this->escape = $escape ?: ['Tuum\Form\Data\Escape', 'htmlSafe']; |
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} |
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/** |
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* @param array|object $data |
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* @param null|callable $escape |
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* @return static |
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*/ |
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public static function forge($data = [], $escape = null) |
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{ |
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return new static($data, $escape); |
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} |
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/** |
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* accessing data as property. returns escaped value. |
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* |
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* @param string $key |
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* @return mixed |
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*/ |
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public function __get($key) |
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{ |
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return $this->get($key); |
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} |
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/** |
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* get an escaped value. |
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* |
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* @param string $key |
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* @param null|mixed $default |
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* @return mixed |
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*/ |
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public function get($key, $default = null) |
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{ |
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$value = $this->raw($key, $default); |
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$escape = $this->escape; |
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return $escape($value); |
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} |
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/** |
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* @param string $name |
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* @param string|null $value |
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* @param string $string |
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* @return string |
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*/ |
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public function ifExists($name, $value, $string) |
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{ |
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if ($this->exists($name, $value)) { |
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return $string; |
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} |
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return ''; |
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} |
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/** |
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* @param string $name |
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* @param string $value |
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* @return bool |
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*/ |
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public function exists($name, $value = null) |
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{ |
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$found = $this->raw($name); |
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if (is_null($found)) { |
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return false; |
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} |
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if (!is_null($value)) { |
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if (is_array($found)) { |
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return in_array($value, $found); |
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} |
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return (string)$value === (string)$found; |
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} |
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return true; |
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} |
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/** |
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* get a raw value. |
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* |
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* @param string $key |
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* @param null|mixed $default |
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* @return mixed |
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*/ |
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public function raw($key, $default = null) |
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{ |
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if (strpos($key, '[') === false) { |
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return Accessor::get($this->data, $key, $default); |
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} |
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$found = $this->parseRaw($key); |
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if (!is_null($found)) { |
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return $found; |
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} |
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return $default; |
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} |
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/** |
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* get a raw value for form element array name (with []). |
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* |
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* @param string $key |
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* @return null|mixed |
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*/ |
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private function parseRaw($key) |
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{ |
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$key = str_replace('[]', '', $key); |
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parse_str($key, $levels); |
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if (is_null($levels)) { |
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return null; |
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} |
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$inputs = $this->data; |
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return $this->recurseGet($levels, $inputs); |
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} |
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/** |
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* gets a value from $input array. |
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* |
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* returns null if not found. or |
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* returns an empty space if key is set but has not real value. |
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* |
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* @param array $levels |
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* @param mixed $inputs |
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* @return mixed |
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*/ |
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private function recurseGet($levels, $inputs) |
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{ |
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if (!is_array($levels)) { |
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if (is_null($inputs) || $inputs === false) { |
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$inputs = ''; |
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} |
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return $inputs; |
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} |
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list($key, $next) = each($levels); |
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// an array |
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if (Accessor::has($inputs, $key)) { |
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return $this->recurseGet($next, Accessor::get($inputs, $key)); |
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} |
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return null; |
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} |
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/** |
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* returns new Data object populated with its data[$key]. |
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* |
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* @param string $key |
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* @return static |
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*/ |
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public function extractKey($key) |
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{ |
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$self = clone($this); |
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$self->data = Accessor::get($this->data, $key) ?: []; |
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return $self; |
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} |
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/** |
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* Retrieve an external iterator |
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* |
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* @return Traversable |
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*/ |
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public function getIterator() |
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{ |
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$data = $this->data; |
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foreach ($this->data as $key => $val) { |
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$data[$key] = $this->extractKey($key); |
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} |
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return new \ArrayIterator($data); |
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} |
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/** |
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* @param mixed $offset |
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* @return bool |
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*/ |
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public function offsetExists($offset) |
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{ |
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return array_key_exists($offset, $this->data); |
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} |
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/** |
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* @param mixed |
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* @return mixed |
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*/ |
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public function offsetGet($offset) |
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{ |
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return $this->get($offset); |
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} |
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/** |
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* @param mixed $offset |
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* @param mixed $value |
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* @return void |
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*/ |
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public function offsetSet($offset, $value) |
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{ |
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$this->data[$offset] = $value; |
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} |
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/** |
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* @param mixed $offset |
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* @return void |
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*/ |
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public function offsetUnset($offset) |
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{ |
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if ($this->offsetExists($offset)) { |
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unset($this->data[$offset]); |
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} |
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} |
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} |
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