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<?php |
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/* |
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* This file is part of ocubom/twig-svg-extension |
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* |
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* © Oscar Cubo Medina <https://ocubom.github.io> |
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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 Ocubom\Twig\Extension\Svg\Util; |
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use function BenTools\IterableFunctions\iterable_to_array; |
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use function Ocubom\Math\base_convert; |
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use Symfony\Component\OptionsResolver\OptionsResolver; |
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class DomIdent |
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{ |
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private static ?OptionsResolver $resolver = null; |
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private const REPLACEMENTS = [ |
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'> <' => '><', |
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'" >' => '">', |
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'\' >' => '\'>', |
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]; |
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public static function generate( |
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\DOMElement $element, |
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iterable $options = null |
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): string { |
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/* @psalm-suppress RedundantPropertyInitializationCheck */ |
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self::$resolver = self::$resolver ?? self::configureOptions(); |
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// Resolve options |
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$options = self::$resolver->resolve(iterable_to_array($options ?? [])); |
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// Work on an optimized clone |
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$node = DomHelper::cloneElement($element); |
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// Remove identifier |
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$node->removeAttribute('id'); |
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// Convert to text |
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$text = DomHelper::toXml($node); |
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$text = preg_replace('/\s\s+/', ' ', $text); |
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$text = trim($text); |
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foreach (self::REPLACEMENTS as $search => $replace) { |
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$text = str_replace($search, $replace, $text); |
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} |
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// Generate a hash |
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$hash = hash($options['algo'], $text); |
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// Convert to base and pad to maximum length in new base |
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$hash = str_pad( |
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base_convert($hash, 16, $options['base']), |
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(int) ceil(strlen($hash) * log(16, $options['base'])), |
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'0', |
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\STR_PAD_LEFT |
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); |
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return sprintf($options['format'], substr($hash, -$options['length'])); |
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} |
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protected static function configureOptions(OptionsResolver $resolver = null): OptionsResolver |
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{ |
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$resolver = $resolver ?? new OptionsResolver(); |
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$resolver->define('algo') |
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->default('sha512') |
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->allowedTypes('string') |
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->allowedValues(...hash_algos()) |
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->info('Hash algorithm used to hash values'); |
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$resolver->define('format') |
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->default('%s') |
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->allowedTypes('string') |
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->allowedValues(function (string $value) { |
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return str_contains($value, '%'); |
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}) |
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->info('Native printf format string to generate final output. Must include %s'); |
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$resolver->define('base') |
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->default(62) |
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->allowedTypes('int') |
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->allowedValues(function (int $value) { |
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return $value >= 2 && $value <= 62; |
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}) |
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->info('The base used to encode value to reduce its length or increase entropy'); |
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$resolver->define('length') |
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->default(7) |
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->allowedTypes('int') |
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->info('Length of the generated identifier (after base conversion)'); |
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return $resolver; |
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} |
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} |
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ocubom /
twig-svg-extension
