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<?php |
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/* this file is part of pipelines */ |
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namespace Ktomk\Pipelines\Cli\Args; |
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use IteratorIterator; |
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use Ktomk\Pipelines\Cli\ArgsException; |
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class OptionIterator extends IteratorIterator |
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{ |
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/** |
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* @var Iterator |
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*/ |
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private $iterator; |
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/** |
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* Iterator constructor. |
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* @param Args $args |
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*/ |
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public function __construct(Args $args) |
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{ |
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$this->iterator = new Iterator($args); |
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parent::__construct($this->iterator); |
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$this->rewind(); |
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} |
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public function hasArgument() |
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{ |
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$next = $this->iterator->getNext(); |
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if (null === $next) { |
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return false; |
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} |
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if ($next === '--') { |
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return false; |
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} |
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return true; |
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} |
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/** |
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* @throws ArgsException |
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*/ |
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public function getArgument() |
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{ |
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if (!$this->hasArgument()) { |
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ArgsException::__( |
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sprintf("error: option '%s' requires an argument", ltrim($this->current(), '-')) |
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); |
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} |
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return $this->iterator->getNext(); |
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} |
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/** |
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* Forward the iterator to the current option |
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*/ |
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private function forwardToOption() |
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{ |
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while ( |
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parent::valid() |
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&& (null !== $current = parent::current()) |
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&& ( |
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(strlen($current) < 2) |
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|| (substr($current, 0, 1) !== '-') |
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) |
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) { |
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parent::next(); |
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} |
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} |
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/* Iterator */ |
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public function current() |
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{ |
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return $this->iterator->current(); |
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} |
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/** |
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* Move forward to next option |
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*/ |
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public function next() |
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{ |
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parent::next(); |
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$this->forwardToOption(); |
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} |
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/** |
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* Checks if current position is valid |
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* |
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* @return bool |
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*/ |
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public function valid() |
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{ |
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if (!$this->iterator->valid()) { |
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return false; |
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} |
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$current = parent::current(); |
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if ('--' === $current) { |
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return false; |
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} |
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return true; |
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} |
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/** |
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* @return void Any returned value is ignored. |
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*/ |
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public function rewind() |
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{ |
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parent::rewind(); |
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$this->forwardToOption(); |
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} |
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} |
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ktomk /
pipelines
