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<?php |
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declare(strict_types=1); |
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/* |
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* This file is part of the league/commonmark package. |
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* |
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* (c) Colin O'Dell <[email protected]> |
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* |
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* For the full copyright and license information, please view the LICENSE |
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* file that was distributed with this source code. |
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*/ |
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namespace League\CommonMark\Normalizer; |
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// phpcs:disable Squiz.Strings.DoubleQuoteUsage.ContainsVar |
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final class UniqueSlugNormalizer implements UniqueSlugNormalizerInterface |
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{ |
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private TextNormalizerInterface $innerNormalizer; |
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/** @var array<string, bool> */ |
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private array $alreadyUsed = []; |
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/** @var array<string, bool> */ |
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2398 |
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private array $blacklist = []; |
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2398 |
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public function __construct(TextNormalizerInterface $innerNormalizer) |
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{ |
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$this->innerNormalizer = $innerNormalizer; |
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2306 |
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} |
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2306 |
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/** |
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* Set a list of IDs that should be treated as already used |
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* |
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* These IDs will be considered "taken" and any generated slug matching |
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* a blacklisted ID will receive a numeric suffix (e.g., -1, -2, etc.) |
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* |
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* @param array<string> $blacklistedIds List of IDs to blacklist |
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*/ |
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public function setBlacklist(array $blacklistedIds): void |
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{ |
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124 |
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$this->blacklist = []; |
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foreach ($blacklistedIds as $id) { |
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// Normalize the blacklist entry using the same normalizer as headings |
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124 |
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$normalized = $this->innerNormalizer->normalize($id); |
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if ($normalized !== '') { |
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$this->blacklist[$normalized] = true; |
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} |
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} |
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$this->clearHistory(); |
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} |
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public function clearHistory(): void |
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{ |
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$this->alreadyUsed = $this->blacklist; |
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} |
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/** |
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* {@inheritDoc} |
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* |
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* @psalm-allow-private-mutation |
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*/ |
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public function normalize(string $text, array $context = []): string |
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{ |
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$normalized = $this->innerNormalizer->normalize($text, $context); |
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// If it's not unique, add an incremental number to the end until we get a unique version |
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if (\array_key_exists($normalized, $this->alreadyUsed)) { |
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$suffix = 0; |
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do { |
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++$suffix; |
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} while (\array_key_exists("$normalized-$suffix", $this->alreadyUsed)); |
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$normalized = "$normalized-$suffix"; |
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} |
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$this->alreadyUsed[$normalized] = true; |
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return $normalized; |
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} |
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} |
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thephpleague /
commonmark
