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<?php |
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declare(strict_types=1); |
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namespace UnicornFail\Emoji\Dataset; |
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use UnicornFail\Emoji\Util\ImmutableArrayIterator; |
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use UnicornFail\Emoji\Util\Normalize; |
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final class Dataset extends ImmutableArrayIterator implements \ArrayAccess, \Countable, \SeekableIterator, \Serializable |
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{ |
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public const DIRECTORY = __DIR__ . '/../../datasets'; |
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/** @var string */ |
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private $index; |
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/** @var Dataset[] */ |
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private $indices = []; |
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/** |
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* @param mixed $emojis |
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*/ |
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public function __construct($emojis = [], string $index = 'hexcode') |
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{ |
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$this->index = $index; |
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$normalized = Normalize::emojis($emojis, $index); |
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parent::__construct($normalized, \ArrayIterator::ARRAY_AS_PROPS | \ArrayIterator::STD_PROP_LIST); |
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} |
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/** |
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* @param callable(Emoji):bool $callback |
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*/ |
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public function filter(callable $callback): Dataset |
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{ |
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/** @var \Iterator $iterator */ |
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$iterator = $this; |
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$filter = new \CallbackFilterIterator($iterator, $callback); |
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return new self($filter); |
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} |
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public function indexBy(string $index = 'hexcode'): Dataset |
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{ |
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if (! isset($this->indices[$index])) { |
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$this->indices[$index] = new self($this, $index); |
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} |
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return $this->indices[$index]; |
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} |
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/** |
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* @param string $key |
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*/ |
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public function offsetGet($key): ?Emoji // phpcs:ignore |
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{ |
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// Normalize shortcodes to match index. |
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if (\strpos($this->index, 'shortcode') !== false) { |
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$key = \current(Normalize::shortcodes($key)); |
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} |
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if (! $key) { |
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return null; |
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} |
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/** @var ?Emoji $emoji */ |
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$emoji = parent::offsetGet($key); |
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return $emoji; |
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} |
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} |
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unicorn-fail /
emoji
