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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\Exception\FileNotFoundException; |
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use UnicornFail\Emoji\Exception\MalformedArchiveException; |
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use UnicornFail\Emoji\Exception\UnarchiveException; |
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use UnicornFail\Emoji\Parser\Parser; |
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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 DatasetInterface |
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{ |
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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 = $index; |
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parent::__construct(Normalize::dataset($emojis, $index), \ArrayIterator::ARRAY_AS_PROPS | \ArrayIterator::STD_PROP_LIST); |
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} |
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public static function unarchive(string $filename): self |
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{ |
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if (! \file_exists($filename)) { |
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throw new FileNotFoundException($filename); |
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} |
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if ( |
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! ($contents = \file_get_contents($filename)) || |
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! ($decoded = \gzdecode($contents)) |
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) { |
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throw new UnarchiveException($filename); |
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} |
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try { |
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/** @var ?Dataset $dataset */ |
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$dataset = \unserialize((string) $decoded); |
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} catch (\Throwable $throwable) { |
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throw new MalformedArchiveException($filename, $throwable); |
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} |
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if (! $dataset instanceof Dataset) { |
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throw new MalformedArchiveException($filename); |
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} |
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return $dataset; |
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} |
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/** |
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* @param string[] $indices |
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* |
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* @return false|string |
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*/ |
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public function archive(array $indices = Parser::INDICES) |
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{ |
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foreach ($indices as $index) { |
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$this->indexBy($index); |
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} |
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$serialize = \serialize($this); |
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return \gzencode($serialize, 9); |
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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 $callback): Dataset |
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{ |
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return new self(new \CallbackFilterIterator($this, $callback)); |
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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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/** @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
