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<?php |
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/** |
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* This file is part of the ZBateson\MailMimeParser project. |
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* |
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* @license http://opensource.org/licenses/bsd-license.php BSD |
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*/ |
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namespace ZBateson\MailMimeParser\Header\Consumer; |
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use ZBateson\MailMimeParser\Header\Part\CommentPart; |
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/** |
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* Serves as a base-consumer for ID headers (like Message-ID and Content-ID). |
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* |
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* IdBaseConsumer handles invalidly-formatted IDs not within '<' and '>' |
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* characters. Processing for validly-formatted IDs are passed on to its |
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* sub-consumer, IdConsumer. |
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* |
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* @author Zaahid Bateson |
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*/ |
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class IdBaseConsumer extends AbstractConsumer |
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{ |
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/** |
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* Returns the following as sub-consumers: |
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* - {@see CommentConsumer} |
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* - {@see QuotedStringConsumer} |
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* - {@see IdConsumer} |
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* |
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* @return AbstractConsumer[] the sub-consumers |
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*/ |
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protected function getSubConsumers() : array |
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{ |
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return [ |
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$this->consumerService->getCommentConsumer(), |
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$this->consumerService->getQuotedStringConsumer(), |
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$this->consumerService->getIdConsumer() |
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]; |
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} |
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/** |
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* Returns '\s+' as a whitespace separator. |
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* |
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* @return string[] an array of regex pattern matchers. |
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*/ |
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protected function getTokenSeparators() : array |
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{ |
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return ['\s+']; |
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} |
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/** |
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* IdBaseConsumer doesn't have start/end tokens, and so always returns |
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* false. |
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*/ |
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protected function isEndToken(string $token) : bool |
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{ |
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return false; |
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} |
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/** |
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* IdBaseConsumer doesn't have start/end tokens, and so always returns |
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* false. |
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* |
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* @codeCoverageIgnore |
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*/ |
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protected function isStartToken(string $token) : bool |
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{ |
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return false; |
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} |
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/** |
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* Returns null for whitespace, and LiteralPart for anything else. |
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* |
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* @param string $token the token |
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* @param bool $isLiteral set to true if the token represents a literal - |
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* e.g. an escaped token |
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* @return \ZBateson\MailMimeParser\Header\IHeaderPart|null the constructed |
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* header part or null if the token should be ignored |
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*/ |
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protected function getPartForToken(string $token, bool $isLiteral) |
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{ |
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if (\preg_match('/^\s+$/', $token)) { |
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return null; |
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} |
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return $this->partFactory->newLiteralPart($token); |
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} |
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/** |
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* Overridden to filter out any found CommentPart objects. |
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* |
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* @param \ZBateson\MailMimeParser\Header\IHeaderPart[] $parts |
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* @return \ZBateson\MailMimeParser\Header\IHeaderPart[] |
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*/ |
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protected function processParts(array $parts) : array |
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{ |
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return \array_values(\array_filter($parts, function($part) { |
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return !(empty($part) || $part instanceof CommentPart); |
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})); |
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} |
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} |
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zbateson /
mail-mime-parser
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