75 lines
1.8 KiB
PHP
75 lines
1.8 KiB
PHP
<?php
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// ContentRangeHeader.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 ContentRangeHeader {
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private string $unit;
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private int $rangeStart = -1;
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private int $rangeEnd = -1;
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private int $size = -1;
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public function __construct(string $unit, int $rangeStart, int $rangeEnd, int $size) {
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$this->unit = $unit;
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$this->rangeStart = $rangeStart;
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$this->rangeEnd = $rangeEnd;
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$this->size = $size;
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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 getSize(): int {
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return $this->size;
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}
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public function isUnknownSize(): bool {
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return $this->size < 0;
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}
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public function isUnspecifiedRange(): bool {
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return $this->rangeStart < 0 || $this->rangeEnd < 0;
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}
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public function getRangeStart(): int {
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return $this->rangeStart;
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}
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public function getRangeEnd(): int {
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return $this->rangeEnd;
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}
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public static function parse(HttpHeader $header): ContentRangeHeader {
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$parts = explode(' ', trim($header->getFirstLine()), 2);
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$unit = array_shift($parts);
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$parts = explode('/', $parts[1] ?? '', 2);
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$size = trim($parts[1] ?? '*');
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if($size !== '*')
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$size = max(0, intval($size));
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else
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$size = -1;
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$range = trim($parts[0]);
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if($range !== '*') {
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$parts = explode('-', $range, 2);
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$rangeStart = intval(trim($parts[0]));
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$rangeEnd = intval(trim($parts[1] ?? '0'));
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} else
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$rangeStart = $rangeEnd = -1;
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return new ContentRangeHeader($unit, $rangeStart, $rangeEnd, $size);
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}
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}
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