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<?php declare(strict_types=1); |
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/** |
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* It's free open-source software released under the MIT License. |
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* |
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* @author Anatoly Nekhay <[email protected]> |
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* @copyright Copyright (c) 2018, Anatoly Nekhay |
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* @license https://github.com/sunrise-php/http-message/blob/master/LICENSE |
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* @link https://github.com/sunrise-php/http-message |
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*/ |
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namespace Sunrise\Http\Message\Header; |
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/** |
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* Import classes |
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*/ |
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use Sunrise\Http\Message\Exception\InvalidHeaderValueException; |
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use Sunrise\Http\Message\Header; |
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/** |
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* Import functions |
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*/ |
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use function sprintf; |
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/** |
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* @link https://tools.ietf.org/html/rfc2616#section-14.16 |
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*/ |
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class ContentRangeHeader extends Header |
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{ |
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/** |
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* @var int |
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*/ |
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private int $firstBytePosition; |
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/** |
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* @var int |
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*/ |
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private int $lastBytePosition; |
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/** |
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* @var int |
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*/ |
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private int $instanceLength; |
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/** |
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* Constructor of the class |
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* |
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* @param int $firstBytePosition |
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* @param int $lastBytePosition |
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* @param int $instanceLength |
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* |
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* @throws InvalidHeaderValueException |
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* If the range isn't valid. |
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*/ |
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public function __construct(int $firstBytePosition, int $lastBytePosition, int $instanceLength) |
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{ |
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$this->validateRange($firstBytePosition, $lastBytePosition, $instanceLength); |
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$this->firstBytePosition = $firstBytePosition; |
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$this->lastBytePosition = $lastBytePosition; |
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$this->instanceLength = $instanceLength; |
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} |
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/** |
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* {@inheritdoc} |
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*/ |
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3 |
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public function getFieldName(): string |
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{ |
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3 |
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return 'Content-Range'; |
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} |
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/** |
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* {@inheritdoc} |
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*/ |
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3 |
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public function getFieldValue(): string |
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{ |
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return sprintf( |
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'bytes %d-%d/%d', |
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$this->firstBytePosition, |
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3 |
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$this->lastBytePosition, |
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3 |
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$this->instanceLength |
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); |
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} |
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/** |
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* Validates the given range |
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* |
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* @param int $firstBytePosition |
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* @param int $lastBytePosition |
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* @param int $instanceLength |
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* |
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* @return void |
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* |
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* @throws InvalidHeaderValueException |
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* If the range isn't valid. |
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*/ |
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8 |
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private function validateRange(int $firstBytePosition, int $lastBytePosition, int $instanceLength): void |
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{ |
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if (! ($firstBytePosition <= $lastBytePosition)) { |
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throw new InvalidHeaderValueException( |
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'The "first-byte-pos" value of the content range ' . |
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'must be less than or equal to the "last-byte-pos" value' |
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); |
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} |
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7 |
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if (! ($lastBytePosition < $instanceLength)) { |
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throw new InvalidHeaderValueException( |
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'The "last-byte-pos" value of the content range ' . |
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'must be less than the "instance-length" value' |
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); |
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} |
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} |
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} |
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sunrise-php /
http-message
