62 lines
1.5 KiB
PHP
62 lines
1.5 KiB
PHP
<?php
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// RangeHeader.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 stdClass;
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use Index\Http\HttpHeader;
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class RangeHeader {
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private string $unit;
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private array $ranges;
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public function __construct(string $unit, array $ranges) {
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$this->unit = $unit;
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$this->ranges = $ranges;
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}
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public function getUnit(): string {
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return $this->unit;
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}
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public function isBytes(): bool {
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return $this->unit === 'bytes';
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}
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public function getRanges(): array {
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return $this->ranges;
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}
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public static function parse(HttpHeader $header): RangeHeader {
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$parts = explode('=', trim($header->getFirstLine()), 2);
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$unit = trim($parts[0]);
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$ranges = [];
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$rawRanges = explode(',', $parts[1] ?? '', 2);
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foreach($rawRanges as $raw) {
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$raw = explode('-', trim($raw), 2);
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$start = trim($raw[0]);
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$end = trim($raw[1] ?? '');
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$ranges[] = $range = new stdClass;
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if($start === '' && is_numeric($end)) {
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$range->type = 'suffix-length';
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$range->length = intval($end);
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} elseif(is_numeric($start) && $end === '') {
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$range->type = 'start';
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$range->start = intval($start);
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} else {
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$range->type = 'range';
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$range->start = intval($start);
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$range->end = intval($end);
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}
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}
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return new RangeHeader($unit, $ranges);
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}
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}
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