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<?php |
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namespace PhpSchool\Terminal; |
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use function in_array; |
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/** |
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* @author Aydin Hassan <[email protected]> |
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*/ |
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class InputCharacter |
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{ |
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/** |
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* @var string |
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*/ |
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private $data; |
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public const UP = 'UP'; |
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public const DOWN = 'DOWN'; |
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public const RIGHT = 'RIGHT'; |
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public const LEFT = 'LEFT'; |
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public const CTRLA = 'CTRLA'; |
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public const CTRLB = 'CTRLB'; |
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public const CTRLE = 'CTRLE'; |
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public const CTRLF = 'CTRLF'; |
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public const BACKSPACE = 'BACKSPACE'; |
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public const CTRLW = 'CTRLW'; |
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public const ENTER = 'ENTER'; |
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public const TAB = 'TAB'; |
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private static $controls = [ |
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"\033[A" => self::UP, |
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"\033[B" => self::DOWN, |
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"\033[C" => self::RIGHT, |
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"\033[D" => self::LEFT, |
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"\001" => self::CTRLA, |
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"\002" => self::CTRLB, |
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"\005" => self::CTRLE, |
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"\006" => self::CTRLF, |
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"\010" => self::BACKSPACE, |
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"\177" => self::BACKSPACE, |
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"\027" => self::CTRLW, |
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"\n" => self::ENTER, |
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"\t" => self::TAB, |
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]; |
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public function __construct(string $data) |
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{ |
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$this->data = $data; |
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} |
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public function isHandledControl() : bool |
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{ |
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return isset(static::$controls[$this->data]); |
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} |
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/** |
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* Is this character a control sequence? |
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*/ |
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public function isControl() : bool |
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{ |
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return preg_match( '/[\x00-\x1F\x7F]/', $this->data); |
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} |
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/** |
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* Is this character a normal character? |
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*/ |
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public function isNotControl() : bool |
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{ |
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return ! $this->isControl(); |
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} |
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/** |
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* Get the raw character or control sequence |
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*/ |
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public function get() : string |
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{ |
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return $this->data; |
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} |
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/** |
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* Get the actual control name that this sequence represents. |
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* One of the class constants. Eg. self::UP. |
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* |
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* Throws an exception if the character is not actually a control sequence |
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*/ |
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public function getControl() : string |
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{ |
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if (!isset(static::$controls[$this->data])) { |
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throw new \RuntimeException(sprintf('Character "%s" is not a control', $this->data)); |
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} |
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return static::$controls[$this->data]; |
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} |
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/** |
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* Get the raw character or control sequence |
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*/ |
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public function __toString() : string |
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{ |
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return $this->get(); |
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} |
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/** |
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* Does the given control name exist? eg self::UP. |
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*/ |
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public static function controlExists(string $controlName) : bool |
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{ |
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return in_array($controlName, static::$controls, true); |
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} |
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/** |
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* Get all of the available control names |
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*/ |
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public static function getControls() : array |
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{ |
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return array_values(array_unique(static::$controls)); |
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} |
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/** |
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* Create a instance from a given control name. Throws an exception if the |
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* control name does not exist. |
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*/ |
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public static function fromControlName(string $controlName) : self |
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{ |
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if (!static::controlExists($controlName)) { |
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throw new \InvalidArgumentException(sprintf('Control "%s" does not exist', $controlName)); |
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} |
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return new static(array_search($controlName, static::$controls, true)); |
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} |
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} |
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php-school /
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