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Consumes all tokens within parentheses as comments.

Parenthetical comments in mime-headers can be nested within one another. The outer-level continues after an inner-comment ends. Additionally, quoted-literals may exist with comments as well meaning a parenthesis inside a quoted string would not begin or end a comment section.

In order to satisfy these specifications, CommentConsumerService inherits from GenericConsumerService which defines CommentConsumerService and QuotedStringConsumerService as sub-consumers.

Examples: X-Mime-Header: Some value (comment) X-Mime-Header: Some value (comment (nested comment) still in comment) X-Mime-Header: Some value (comment "and part of original ) comment" - still a comment)

CloneableInstantiable
Methods
public __construct(Psr\Log\LoggerInterface $logger, ZBateson\MailMimeParser\Header\Part\MimeTokenPartFactory $partFactory, ZBateson\MailMimeParser\Header\Consumer\QuotedStringConsumerService $quotedStringConsumerService)
public ZBateson\MailMimeParser\Header\Consumer\AbstractConsumerService::__invoke(string $value) : array
Properties
protected Psr\Log\LoggerInterface ZBateson\MailMimeParser\Header\Consumer\AbstractConsumerService::$logger
protected ZBateson\MailMimeParser\Header\Part\HeaderPartFactory ZBateson\MailMimeParser\Header\Consumer\AbstractConsumerService::$partFactory
 
  • var \HeaderPartFactory used to construct IHeaderPart objects
protected array ZBateson\MailMimeParser\Header\Consumer\AbstractConsumerService::$subConsumers = []
 
  • var \AbstractConsumerService[] array of sub-consumers used by this consumer if any, or an empty array if none exist.
Methods
protected advanceToNextToken(Iterator $tokens, bool $isStartToken) : static
 

Calls $tokens->next() and returns.

The default implementation checks if the current token is an end token, and will not advance past it. Because a comment part of a header can be nested, its implementation must advance past its own 'end' token.

protected ZBateson\MailMimeParser\Header\Consumer\AbstractConsumerService::getAllConsumers() : array
 

Returns this consumer and all unique sub consumers.

Loops into the sub-consumers (and their sub-consumers, etc...) finding all unique consumers, and returns them in an array.

  • return \AbstractConsumerService[] Array of unique consumers.
protected ZBateson\MailMimeParser\Header\Consumer\AbstractConsumerService::getAllTokenSeparators() : array
 

Returns a list of regular expression markers for this consumer and all sub-consumers by calling getTokenSeparators().

  • return string[] Array of regular expression markers.
protected ZBateson\MailMimeParser\Header\Consumer\AbstractConsumerService::getConsumerTokenParts(Iterator $tokens) : array
 

Iterates through this consumer's sub-consumers checking if the current token triggers a sub-consumer's start token and passes control onto that sub-consumer's parseTokenIntoParts().

If no sub-consumer is responsible for the current token, calls {@see \AbstractConsumerService::getPartForToken()} and returns it in an array.

  • param \Iterator<string> $tokens
  • return \IHeaderPart[]
protected getPartForToken(string $token, bool $isLiteral) : ?ZBateson\MailMimeParser\Header\IHeaderPart
 

Instantiates and returns Part\Token objects.

Tokens from this and sub-consumers are combined into a Part\CommentPart in processParts.

protected ZBateson\MailMimeParser\Header\Consumer\AbstractConsumerService::getTokenParts(Iterator $tokens) : array
 

Returns an array of IHeaderPart for the current token on the iterator.

If the current token is a start token from a sub-consumer, the sub- consumer's {@see \AbstractConsumerService::parseTokensIntoParts()} method is called.

  • param \Iterator<string> $tokens The token iterator.
  • return \IHeaderPart[]
protected getTokenSeparators() : array
 

Returns patterns matching open and close parenthesis characters as separators.

  • return string[] the patterns
protected ZBateson\MailMimeParser\Header\Consumer\AbstractConsumerService::getTokenSplitPattern() : string
 

Returns a regex pattern used to split the input header string.

The default implementation calls {@see \AbstractConsumerService::getAllTokenSeparators()} and implodes the returned array with the regex OR '|' character as its glue.

  • return string the regex pattern
protected isEndToken(string $token) : bool
 

Returns true if the token is a close parenthesis character, ')'.

protected isStartToken(string $token) : bool
 

Returns true if the token is an open parenthesis character, '('.

protected ZBateson\MailMimeParser\Header\Consumer\AbstractConsumerService::parseTokensIntoParts(Iterator $tokens) : array
 

Iterates over the passed token Iterator and returns an array of parsed IHeaderPart objects.

The method checks each token to see if the token matches a sub-consumer's start token, or if it matches the current consumer's end token to stop processing.

If a sub-consumer's start token is matched, the sub-consumer is invoked and its returned parts are merged to the current consumer's header parts.

After all tokens are read and an array of Header\Parts are constructed, the array is passed to {@see \AbstractConsumerService::processParts} for any final processing if there are any parts.

  • param \Iterator<string> $tokens An iterator over a string of tokens
  • return \IHeaderPart[] An array of parsed parts
protected processParts(array $parts) : array
 

Post processing involves creating a single Part\CommentPart out of generated parts from tokens. The Part\CommentPart is returned in an array.

  • param \IHeaderPart[] $parts
  • return \IHeaderPart[]
protected ZBateson\MailMimeParser\Header\Consumer\AbstractConsumerService::splitRawValue( $rawValue) : array
 

Returns an array of split tokens from the input string.

The method calls preg_split using {@see \AbstractConsumerService::getTokenSplitPattern()}. The split array will not contain any empty parts and will contain the markers.

  • param string $rawValue the raw string
  • return string[] the array of tokens
© 2024 Bruce Wells
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