47 lines
1.1 KiB
PHP
47 lines
1.1 KiB
PHP
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<?php
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// IfMatchHeader.php
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// Created: 2022-02-14
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// Updated: 2022-02-27
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namespace Index\Http\Headers;
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use Index\Http\HttpHeader;
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class IfMatchHeader {
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private array $tags;
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private int $count;
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public function __construct(array $tags) {
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$this->tags = $tags;
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$this->count = count($tags);
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}
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public function getTags(): array {
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return $this->tags;
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}
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public function hasTag(string $tag): bool {
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if($this->count === 1 && $this->tags[0] === '*')
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return true;
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return in_array((string)$tag, $this->tags);
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}
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public static function parse(HttpHeader $header): IfMatchHeader {
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$tags = [];
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$rawTags = array_unique(
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array_map(
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fn($directive) => trim($directive),
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explode(',', strtolower($header->getFirstLine()))
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)
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);
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foreach($rawTags as $raw) {
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if(substr($raw, 0, 3) === 'W/"')
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continue;
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$tags[] = trim($raw, '"');
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}
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return new IfMatchHeader($tags);
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}
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}
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