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<?php |
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namespace Spatie\Image; |
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use ArrayIterator; |
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use IteratorAggregate; |
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class ManipulationSequence implements IteratorAggregate |
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{ |
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/** @var array */ |
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protected $groups = []; |
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/** @var bool */ |
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protected $startNewGroup = true; |
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/** |
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* @param string $operation |
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* @param string $argument |
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* |
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* @return static |
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*/ |
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public function addManipulation(string $operation, string $argument) |
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{ |
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if ($this->startNewGroup) { |
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$this->groups[] = []; |
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} |
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$lastIndex = count($this->groups) - 1; |
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$this->groups[$lastIndex][$operation] = $argument; |
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$this->startNewGroup = false; |
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return $this; |
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} |
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public function merge(ManipulationSequence $manipulationSets) |
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{ |
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foreach($manipulationSets->toArray() as $manipulationSet) { |
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foreach($manipulationSet as $name => $argument) { |
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$this->addManipulation($name, $argument); |
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} |
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if(next($manipulationSets)) { |
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$this->startNewGroup(); |
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} |
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} |
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} |
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/** |
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* @return static |
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*/ |
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public function startNewGroup() |
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{ |
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$this->startNewGroup = true; |
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return $this; |
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} |
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public function toArray(): array |
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{ |
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return $this->getGroups(); |
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} |
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public function getGroups(): array |
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{ |
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return $this->sanitizeManipulationSets($this->groups); |
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} |
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public function getIterator(): ArrayIterator |
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{ |
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return new ArrayIterator($this->groups); |
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} |
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public function removeManipulation($manipulationName) |
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{ |
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foreach($this->groups as &$group) { |
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if (array_key_exists($manipulationName, $group)) { |
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unset($group[$manipulationName]); |
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} |
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} |
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return $this; |
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} |
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protected function sanitizeManipulationSets(array $groups): array |
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{ |
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return array_values(array_filter($groups, function(array $manipulationSet) { |
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return count($manipulationSet); |
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})); |
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} |
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} |
spatie /
image
If a variable is not always an object, we recommend to add an additional type check to ensure your method call is safe: