vendor/symfony/mime/Header/Headers.php line 191
<?php/** This file is part of the Symfony package.** (c) Fabien Potencier <fabien@symfony.com>** For the full copyright and license information, please view the LICENSE* file that was distributed with this source code.*/namespace Symfony\Component\Mime\Header;use Symfony\Component\Mime\Address;use Symfony\Component\Mime\Exception\LogicException;/*** A collection of headers.** @author Fabien Potencier <fabien@symfony.com>*/final class Headers{private const UNIQUE_HEADERS = ['date', 'from', 'sender', 'reply-to', 'to', 'cc', 'bcc','message-id', 'in-reply-to', 'references', 'subject',];private const HEADER_CLASS_MAP = ['date' => DateHeader::class,'from' => MailboxListHeader::class,'sender' => MailboxHeader::class,'reply-to' => MailboxListHeader::class,'to' => MailboxListHeader::class,'cc' => MailboxListHeader::class,'bcc' => MailboxListHeader::class,'message-id' => IdentificationHeader::class,'in-reply-to' => [UnstructuredHeader::class, IdentificationHeader::class], // `In-Reply-To` and `References` are less strict than RFC 2822 (3.6.4) to allow users entering the original email's ...'references' => [UnstructuredHeader::class, IdentificationHeader::class], // ... `Message-ID`, even if that is no valid `msg-id`'return-path' => PathHeader::class,];/*** @var HeaderInterface[][]*/private array $headers = [];private int $lineLength = 76;public function __construct(HeaderInterface ...$headers){foreach ($headers as $header) {$this->add($header);}}public function __clone(){foreach ($this->headers as $name => $collection) {foreach ($collection as $i => $header) {$this->headers[$name][$i] = clone $header;}}}public function setMaxLineLength(int $lineLength){$this->lineLength = $lineLength;foreach ($this->all() as $header) {$header->setMaxLineLength($lineLength);}}public function getMaxLineLength(): int{return $this->lineLength;}/*** @param array<Address|string> $addresses** @return $this*/public function addMailboxListHeader(string $name, array $addresses): static{return $this->add(new MailboxListHeader($name, Address::createArray($addresses)));}/*** @return $this*/public function addMailboxHeader(string $name, Address|string $address): static{return $this->add(new MailboxHeader($name, Address::create($address)));}/*** @return $this*/public function addIdHeader(string $name, string|array $ids): static{return $this->add(new IdentificationHeader($name, $ids));}/*** @return $this*/public function addPathHeader(string $name, Address|string $path): static{return $this->add(new PathHeader($name, $path instanceof Address ? $path : new Address($path)));}/*** @return $this*/public function addDateHeader(string $name, \DateTimeInterface $dateTime): static{return $this->add(new DateHeader($name, $dateTime));}/*** @return $this*/public function addTextHeader(string $name, string $value): static{return $this->add(new UnstructuredHeader($name, $value));}/*** @return $this*/public function addParameterizedHeader(string $name, string $value, array $params = []): static{return $this->add(new ParameterizedHeader($name, $value, $params));}/*** @return $this*/public function addHeader(string $name, mixed $argument, array $more = []): static{$headerClass = self::HEADER_CLASS_MAP[strtolower($name)] ?? UnstructuredHeader::class;if (\is_array($headerClass)) {$headerClass = $headerClass[0];}$parts = explode('\\', $headerClass);$method = 'add'.ucfirst(array_pop($parts));if ('addUnstructuredHeader' === $method) {$method = 'addTextHeader';} elseif ('addIdentificationHeader' === $method) {$method = 'addIdHeader';}return $this->$method($name, $argument, $more);}public function has(string $name): bool{return isset($this->headers[strtolower($name)]);}/*** @return $this*/public function add(HeaderInterface $header): static{self::checkHeaderClass($header);$header->setMaxLineLength($this->lineLength);$name = strtolower($header->getName());if (\in_array($name, self::UNIQUE_HEADERS, true) && isset($this->headers[$name]) && \count($this->headers[$name]) > 0) {throw new LogicException(sprintf('Impossible to set header "%s" as it\'s already defined and must be unique.', $header->getName()));}$this->headers[$name][] = $header;return $this;}public function get(string $name): ?HeaderInterface{$name = strtolower($name);if (!isset($this->headers[$name])) {return null;}$values = array_values($this->headers[$name]);return array_shift($values);}public function all(string $name = null): iterable{if (null === $name) {foreach ($this->headers as $name => $collection) {foreach ($collection as $header) {yield $name => $header;}}} elseif (isset($this->headers[strtolower($name)])) {foreach ($this->headers[strtolower($name)] as $header) {yield $header;}}}public function getNames(): array{return array_keys($this->headers);}public function remove(string $name): void{unset($this->headers[strtolower($name)]);}public static function isUniqueHeader(string $name): bool{return \in_array(strtolower($name), self::UNIQUE_HEADERS, true);}/*** @throws LogicException if the header name and class are not compatible*/public static function checkHeaderClass(HeaderInterface $header): void{$name = strtolower($header->getName());$headerClasses = self::HEADER_CLASS_MAP[$name] ?? [];if (!\is_array($headerClasses)) {$headerClasses = [$headerClasses];}if (!$headerClasses) {return;}foreach ($headerClasses as $c) {if ($header instanceof $c) {return;}}throw new LogicException(sprintf('The "%s" header must be an instance of "%s" (got "%s").', $header->getName(), implode('" or "', $headerClasses), get_debug_type($header)));}public function toString(): string{$string = '';foreach ($this->toArray() as $str) {$string .= $str."\r\n";}return $string;}public function toArray(): array{$arr = [];foreach ($this->all() as $header) {if ('' !== $header->getBodyAsString()) {$arr[] = $header->toString();}}return $arr;}public function getHeaderBody(string $name){return $this->has($name) ? $this->get($name)->getBody() : null;}/*** @internal*/public function setHeaderBody(string $type, string $name, mixed $body): void{if ($this->has($name)) {$this->get($name)->setBody($body);} else {$this->{'add'.$type.'Header'}($name, $body);}}public function getHeaderParameter(string $name, string $parameter): ?string{if (!$this->has($name)) {return null;}$header = $this->get($name);if (!$header instanceof ParameterizedHeader) {throw new LogicException(sprintf('Unable to get parameter "%s" on header "%s" as the header is not of class "%s".', $parameter, $name, ParameterizedHeader::class));}return $header->getParameter($parameter);}/*** @internal*/public function setHeaderParameter(string $name, string $parameter, ?string $value): void{if (!$this->has($name)) {throw new LogicException(sprintf('Unable to set parameter "%s" on header "%s" as the header is not defined.', $parameter, $name));}$header = $this->get($name);if (!$header instanceof ParameterizedHeader) {throw new LogicException(sprintf('Unable to set parameter "%s" on header "%s" as the header is not of class "%s".', $parameter, $name, ParameterizedHeader::class));}$header->setParameter($parameter, $value);}}