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<?php |
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/** |
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* ~~summary~~ |
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* |
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* ~~description~~ |
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* |
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* PHP version 5 |
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* |
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* @category Net |
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* @package PEAR2_Net_RouterOS |
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* @author Vasil Rangelov <[email protected]> |
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* @copyright 2011 Vasil Rangelov |
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* @license http://www.gnu.org/copyleft/lesser.html LGPL License 2.1 |
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* @version GIT: $Id$ |
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* @link http://pear2.php.net/PEAR2_Net_RouterOS |
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*/ |
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/** |
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* The namespace declaration. |
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*/ |
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namespace PEAR2\Net\RouterOS; |
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/** |
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* Implements this interface. |
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*/ |
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use Countable; |
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/** |
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* Implements this interface. |
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*/ |
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use IteratorAggregate; |
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/** |
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* Required for IteratorAggregate::getIterator() to work properly with foreach. |
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*/ |
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use ArrayObject; |
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/** |
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* Represents a RouterOS message. |
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* |
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* @category Net |
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* @package PEAR2_Net_RouterOS |
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* @author Vasil Rangelov <[email protected]> |
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* @license http://www.gnu.org/copyleft/lesser.html LGPL License 2.1 |
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* @link http://pear2.php.net/PEAR2_Net_RouterOS |
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*/ |
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abstract class Message implements IteratorAggregate, Countable |
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{ |
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/** |
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* An array with message attributes. |
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* |
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* Each array key is the the name of an attribute, |
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* and the corresponding array value is the value for that attribute. |
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* |
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* @var array<string,string|resource> |
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*/ |
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protected $attributes = array(); |
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/** |
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* An optional tag to associate the message with. |
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* |
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* @var string|null |
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*/ |
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private $_tag = null; |
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/** |
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* A shorthand gateway. |
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* |
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* This is a magic PHP method that allows you to call the object as a |
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* function. Depending on the argument given, one of the other functions in |
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* the class is invoked and its returned value is returned by this function. |
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* |
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* @param string|null $name The name of an attribute to get the value of, |
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* or NULL to get the tag. |
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* |
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* @return string|resource The value of the specified attribute, |
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* or the tag if NULL is provided. |
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*/ |
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public function __invoke($name = null) |
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{ |
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if (null === $name) { |
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return $this->getTag(); |
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} |
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return $this->getAttribute($name); |
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} |
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/** |
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* Sanitizes a name of an attribute (message or query one). |
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* |
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* @param mixed $name The name to sanitize. |
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* |
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* @return string The sanitized name. |
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*/ |
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public static function sanitizeAttributeName($name) |
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{ |
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$name = (string) $name; |
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if ((empty($name) && $name !== '0') |
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|| preg_match('/[=\s]/s', $name) |
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) { |
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throw new InvalidArgumentException( |
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'Invalid name of argument supplied.', |
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InvalidArgumentException::CODE_NAME_INVALID |
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); |
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} |
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return $name; |
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} |
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/** |
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* Sanitizes a value of an attribute (message or query one). |
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* |
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* @param mixed $value The value to sanitize. |
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* |
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* @return string|resource The sanitized value. |
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*/ |
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public static function sanitizeAttributeValue($value) |
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{ |
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if (Communicator::isSeekableStream($value)) { |
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return $value; |
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} else { |
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return (string) $value; |
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} |
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} |
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/** |
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* Gets the tag that the message is associated with. |
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* |
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* @return string|null The current tag or NULL if there isn't a tag. |
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* |
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* @see setTag() |
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*/ |
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public function getTag() |
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{ |
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return $this->_tag; |
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} |
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/** |
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* Sets the tag to associate the request with. |
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* |
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* Sets the tag to associate the message with. Setting NULL erases the |
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* currently set tag. |
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* |
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* @param string|null $tag The tag to set. |
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* |
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* @return $this The message object. |
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* |
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* @see getTag() |
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*/ |
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protected function setTag($tag) |
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{ |
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$this->_tag = (null === $tag) ? null : (string) $tag; |
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return $this; |
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} |
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/** |
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* Gets the value of an attribute. |
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* |
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* @param string $name The name of the attribute. |
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* |
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* @return string|resource|null The value of the specified attribute. |
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* Returns NULL if such an attribute is not set. |
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* |
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* @see setAttribute() |
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*/ |
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protected function getAttribute($name) |
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{ |
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$name = self::sanitizeAttributeName($name); |
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if (array_key_exists($name, $this->attributes)) { |
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return $this->attributes[$name]; |
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} |
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return null; |
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} |
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/** |
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* Gets all arguments in an array. |
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* |
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* @return ArrayObject An ArrayObject with the keys being argument names, |
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* and the array values being argument values. |
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* |
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* @see getArgument() |
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* @see setArgument() |
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*/ |
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public function getIterator() |
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{ |
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return new ArrayObject($this->attributes); |
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} |
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/** |
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* Counts the number of attributes. |
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* |
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* @return int The number of attributes. |
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*/ |
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public function count() |
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{ |
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return count($this->attributes); |
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} |
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/** |
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* Sets an attribute for the message. |
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* |
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* @param string $name Name of the attribute. |
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* @param string|resource|null $value Value of the attribute as a string or |
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* seekable stream. |
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* Setting the value to NULL removes an argument of this name. |
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* If a seekable stream is provided, it is sent from its current |
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* position to its end, and the pointer is seeked back to its current |
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* position after sending. |
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* Non seekable streams, as well as all other types, are casted to a |
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* string. |
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* |
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* @return $this The message object. |
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* |
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* @see getArgument() |
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*/ |
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protected function setAttribute($name, $value = '') |
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{ |
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if (null === $value) { |
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unset($this->attributes[self::sanitizeAttributeName($name)]); |
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} else { |
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$this->attributes[self::sanitizeAttributeName($name)] |
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= self::sanitizeAttributeValue($value); |
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} |
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return $this; |
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} |
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/** |
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* Removes all attributes from the message. |
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* |
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* @return $this The message object. |
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*/ |
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protected function removeAllAttributes() |
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{ |
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$this->attributes = array(); |
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return $this; |
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} |
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/** |
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* Get actionable debug info. |
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* |
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* This is a magic method available to PHP 5.6 and above, due to which |
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* output of var_dump() will be more actionable. |
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* |
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* You can still call it in earlier versions to get the object as a plain array. |
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* |
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* @return array The info, as an associative array. |
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*/ |
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public function __debugInfo() |
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{ |
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return array( |
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'attributes' => $this->attributes, |
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'tag' => $this->_tag |
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); |
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} |
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} |
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