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<?php |
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declare(strict_types=1); |
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namespace Yiisoft\Http\Header\Value\Cache; |
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use DateTimeImmutable; |
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use DateTimeInterface; |
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use Yiisoft\Http\Header\Parser\ParsingException; |
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use Yiisoft\Http\Header\Internal\BaseHeaderValue; |
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/** |
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* @link https://tools.ietf.org/html/rfc7234#section-5.5 |
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* @link https://developer.mozilla.org/docs/Web/HTTP/Headers/Warning |
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*/ |
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final class Warning extends BaseHeaderValue |
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{ |
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public const NAME = 'Warning'; |
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/** |
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* A cache SHOULD generate this whenever the sent response is stale. |
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* |
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* @link https://tools.ietf.org/html/rfc7234#section-5.5.1 |
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*/ |
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public const RESPONSE_IS_STALE = 110; |
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/** |
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* A cache SHOULD generate this when sending a stale response because an attempt to validate the response failed, |
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* due to an inability to reach the server. |
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* |
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* @link https://tools.ietf.org/html/rfc7234#section-5.5.2 |
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*/ |
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public const REVALIDATION_FAILED = 111; |
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/** |
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* A cache SHOULD generate this if it is intentionally disconnected from the rest of the network for a period of |
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* time. |
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* |
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* @link https://tools.ietf.org/html/rfc7234#section-5.5.3 |
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*/ |
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public const DISCONNECTED_OPERATION = 112; |
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/** |
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* A cache SHOULD generate this if it heuristically chose a freshness lifetime greater than 24 hours and the |
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* response's age is greater than 24 hours. |
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* |
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* @link https://tools.ietf.org/html/rfc7234#section-5.5.4 |
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*/ |
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public const HEURISTIC_EXPIRATION = 113; |
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/** |
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* The warning text can include arbitrary information to be presented to a human user or logged. A system receiving |
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* this warning MUST NOT take any automated action, besides presenting the warning to the user. |
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* |
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* @link https://tools.ietf.org/html/rfc7234#section-5.5.5 |
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*/ |
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public const MISCELLANEOUS_WARNING = 199; |
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/** |
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* This Warning code MUST be added by a proxy if it applies any transformation to the representation, such as |
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* changing the content-coding, media-type, or modifying the representation data, unless this Warning code already |
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* appears in the response. |
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* |
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* @link https://tools.ietf.org/html/rfc7234#section-5.5.6 |
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*/ |
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public const TRANSFORMATION_APPLIED = 214; |
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/** |
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* The warning text can include arbitrary information to be presented to a human user or logged. A system receiving |
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* this warning MUST NOT take any automated action. |
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* |
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* @link https://tools.ietf.org/html/rfc7234#section-5.5.7 |
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*/ |
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public const MISCELLANEOUS_PERSISTENT_WARNING = 299; |
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private bool $useDataset = false; |
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private int $code; |
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private string $agent; |
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private string $text; |
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private ?DateTimeImmutable $date = null; |
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public function __toString(): string |
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{ |
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if ($this->useDataset) { |
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$result = "{$this->code} $this->agent \"" . $this->encodeQuotedString($this->text) . '"'; |
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if ($this->date !== null) { |
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$result .= ' "' . $this->date->format(DateTimeInterface::RFC7231) . '"'; |
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} |
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return $result; |
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} |
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return parent::__toString(); |
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} |
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public function getCode(): ?int |
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{ |
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return $this->useDataset ? $this->code : null; |
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} |
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public function getAgent(): ?string |
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{ |
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return $this->useDataset ? $this->agent : null; |
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} |
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public function getText(): ?string |
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{ |
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return $this->useDataset ? $this->text : null; |
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} |
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public function getDate(): ?DateTimeImmutable |
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{ |
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return $this->useDataset ? $this->date : null; |
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} |
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public function withDataset(int $code, string $agent = '-', string $text = '', DateTimeImmutable $date = null): self |
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{ |
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$clone = clone $this; |
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$clone->code = $code; |
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$clone->agent = $agent; |
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$clone->text = $text; |
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$clone->date = $date; |
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$clone->useDataset = true; |
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return $clone; |
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} |
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protected function setValue(string $value): void |
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{ |
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$value = trim($value); |
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$parts = preg_split('/\\s+/', $value, 3); |
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$this->resetValues(); |
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try { |
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// code |
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if (preg_match('/^[1-9]\\d{2}$/', $parts[0]) !== 1) { |
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throw new ParsingException($parts[0], 0, 'Incorrect code value.'); |
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} |
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$this->code = (int)$parts[0]; |
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// agent |
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if (!isset($parts[1])) { |
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throw new ParsingException($value, 0, 'Agent value not defined.'); |
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} |
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$this->agent = $parts[1]; |
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// text |
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if (!isset($parts[2])) { |
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throw new ParsingException($value, 0, 'Text not defined.'); |
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} |
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if (preg_match( |
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'/^"(?<text>(?:(?:\\\\.)+|[^\\\\"]+)*)"(?:(?:\\s+"(?<date>[a-zA-Z0-9, \\-:]+)")?|\\s*)$/', |
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$parts[2], |
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$matches |
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) !== 1) { |
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throw new ParsingException($parts[2], 0, 'Bad quoted string format.'); |
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} |
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$this->text = preg_replace('/\\\\(.)/', '$1', $matches['text']); |
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// date |
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if (isset($matches['date'])) { |
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if (!$this->validateDateTime($matches['date'])) { |
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throw new ParsingException($matches['date'], 0, 'Incorrect datetime format.'); |
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} |
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$this->date = new DateTimeImmutable($matches['date']); |
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} |
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$this->useDataset = true; |
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$this->error = null; |
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} catch (\Exception $e) { |
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$this->error = $e; |
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} |
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parent::setValue($value); |
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} |
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private function resetValues() |
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{ |
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$this->useDataset = false; |
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$this->date = null; |
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} |
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} |
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yiisoft /
http
