MailMimeParser 2.4

GenericReceivedConsumer extends GenericConsumer
in package

Consumes simple literal strings for parts of a Received header.

Starts consuming when the initialized $partName string is located, for instance when initialized with "FROM", will start consuming on " FROM" or "FROM ".

The consumer ends when any possible "Received" header part is found, namely on one of the following tokens: from, by, via, with, id, for, or when the start token for the date stamp is found, ';'.

The consumer allows comments in and around the consumer... although the Received header specification only allows them before a part, for example, technically speaking this is valid:

"FROM machine (host) (comment) BY machine"

However, this is not:

"FROM machine (host) BY machine WITH (comment) ESMTP"

The consumer will allow both.

Tags
author

Zaahid Bateson

Table of Contents

$consumerService  : ConsumerService
$partFactory  : HeaderPartFactory
$partName  : string
__construct()  : mixed
Constructor overridden to include $partName parameter.
__invoke()  : array<string|int, IHeaderPart>
Invokes parsing of a header's value into header parts.
getInstance()  : mixed
Returns the singleton instance for the class.
advanceToNextToken()  : static
Determines if the iterator should be advanced to the next token after reading tokens or finding a start token.
filterIgnoredSpaces()  : array<string|int, HeaderPart>
Filters out ignorable spaces between parts in the passed array.
getAllConsumers()  : array<string|int, AbstractConsumer>
Returns this consumer and all unique sub consumers.
getAllTokenSeparators()  : array<string|int, string>
Returns a list of regular expression markers for this consumer and all sub-consumers by calling getTokenSeparators().
getConsumerTokenParts()  : array<string|int, IHeaderPart>
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().
getPartForToken()  : IHeaderPart|null
Constructs and returns an IHeaderPart for the passed string token.
getPartName()  : string
Returns the name of the part being parsed.
getSubConsumers()  : array<string|int, AbstractConsumer>
Overridden to return a CommentConsumer.
getTokenParts()  : array<string|int, IHeaderPart>
Returns an array of IHeaderPart for the current token on the iterator.
getTokenSeparators()  : array<string|int, string>
Returns a whitespace separator (for filtering ignorable whitespace between parts), and a separator matching the current part name as returned by $this->getPartName().
getTokenSplitPattern()  : string
Returns a regex pattern used to split the input header string.
isEndToken()  : bool
Returns true if the token matches (case-insensitively) any of the following, with optional surrounding whitespace:
isStartToken()  : bool
Returns true if the passed token matches (case-insensitively) $this->getPartName() with optional whitespace surrounding it.
parseTokensIntoParts()  : array<string|int, IHeaderPart>
Iterates over the passed token Iterator and returns an array of parsed IHeaderPart objects.
processParts()  : array<string|int, HeaderPart>|array<string|int, CommentPart>
Overridden to combine all part values into a single string and return it as the first element, followed by any comment elements as subsequent elements.
splitRawValue()  : array<string|int, mixed>
Returns an array of split tokens from the input string.
addSpaces()  : self
Checks if the passed space part should be added to the returned parts and adds it.
addSpaceToRetParts()  : self
Loops over the $parts array from the current position, checks if the space should be added, then adds it to $retParts and returns.
isSpaceToken()  : bool
Returns true if the passed HeaderPart is a Token instance and a space.
parseRawValue()  : array<string|int, IHeaderPart>
Parses the raw header value into header parts.
shouldAddSpace()  : bool
Returns true if a space should be added based on the passed last and next parts.

Properties

Methods

__invoke()

Invokes parsing of a header's value into header parts.

public __invoke(string $value) : array<string|int, IHeaderPart>
Parameters
$value : string

the raw header value

Return values
array<string|int, IHeaderPart>

the array of parsed parts

advanceToNextToken()

Determines if the iterator should be advanced to the next token after reading tokens or finding a start token.

protected advanceToNextToken(Iterator $tokens, bool $isStartToken) : static

The default implementation will advance for a start token, but not advance on the end token of the current consumer, allowing the end token to be passed up to a higher-level consumer.

Parameters
$tokens : Iterator

The token iterator.

$isStartToken : bool

true for the start token.

Return values
static

filterIgnoredSpaces()

Filters out ignorable spaces between parts in the passed array.

protected filterIgnoredSpaces(array<string|int, HeaderPart$parts) : array<string|int, HeaderPart>

Spaces with parts on either side of it that specify they can be ignored are filtered out. filterIgnoredSpaces is called from within processParts, and if needed by an implementing class that overrides processParts, must be specifically called.

Parameters
$parts : array<string|int, HeaderPart>
Return values
array<string|int, HeaderPart>

getAllConsumers()

Returns this consumer and all unique sub consumers.

protected getAllConsumers() : array<string|int, AbstractConsumer>

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

Return values
array<string|int, AbstractConsumer>

Array of unique consumers.

getAllTokenSeparators()

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

protected getAllTokenSeparators() : array<string|int, string>
Return values
array<string|int, string>

Array of regular expression markers.

getConsumerTokenParts()

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().

protected getConsumerTokenParts(Iterator $tokens) : array<string|int, IHeaderPart>

If no sub-consumer is responsible for the current token, calls AbstractConsumer::getPartForToken() and returns it in an array.

Parameters
$tokens : Iterator
Return values
array<string|int, IHeaderPart>

getPartForToken()

Constructs and returns an IHeaderPart for the passed string token.

protected getPartForToken(string $token, bool $isLiteral) : IHeaderPart|null

If the token should be ignored, the function must return null.

The default created part uses the instance's partFactory->newInstance method.

Parameters
$token : string

the token

$isLiteral : bool

set to true if the token represents a literal - e.g. an escaped token

Return values
IHeaderPart|null

The constructed header part or null if the token should be ignored.

getPartName()

Returns the name of the part being parsed.

protected getPartName() : string

This is always the lower-case name provided to the constructor, not the actual string that started the consumer, which could be in any case.

Return values
string

getTokenParts()

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

protected getTokenParts(Iterator $tokens) : array<string|int, IHeaderPart>

If the current token is a start token from a sub-consumer, the sub- consumer's AbstractConsumer::parseTokensIntoParts() method is called.

Parameters
$tokens : Iterator

The token iterator.

Return values
array<string|int, IHeaderPart>

getTokenSeparators()

Returns a whitespace separator (for filtering ignorable whitespace between parts), and a separator matching the current part name as returned by $this->getPartName().

protected getTokenSeparators() : array<string|int, string>
Return values
array<string|int, string>

an array of regex pattern matchers

getTokenSplitPattern()

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

protected getTokenSplitPattern() : string

The default implementation calls AbstractConsumer::getAllTokenSeparators() and implodes the returned array with the regex OR '|' character as its glue.

Return values
string

the regex pattern

isEndToken()

Returns true if the token matches (case-insensitively) any of the following, with optional surrounding whitespace:

protected isEndToken(string $token) : bool

o by o via o with o id o for o ;

Parameters
$token : string

The current token

Return values
bool

isStartToken()

Returns true if the passed token matches (case-insensitively) $this->getPartName() with optional whitespace surrounding it.

protected isStartToken(string $token) : bool
Parameters
$token : string

The current token

Return values
bool

parseTokensIntoParts()

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

protected parseTokensIntoParts(Iterator $tokens) : array<string|int, IHeaderPart>

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 AbstractConsumer::processParts for any final processing.

Parameters
$tokens : Iterator

An iterator over a string of tokens

Return values
array<string|int, IHeaderPart>

An array of parsed parts

processParts()

Overridden to combine all part values into a single string and return it as the first element, followed by any comment elements as subsequent elements.

protected processParts(array<string|int, HeaderPart$parts) : array<string|int, HeaderPart>|array<string|int, CommentPart>
Parameters
$parts : array<string|int, HeaderPart>
Return values
array<string|int, HeaderPart>|array<string|int, CommentPart>

splitRawValue()

Returns an array of split tokens from the input string.

protected splitRawValue(string $rawValue) : array<string|int, mixed>

The method calls preg_split using AbstractConsumer::getTokenSplitPattern(). The split array will not contain any empty parts and will contain the markers.

Parameters
$rawValue : string

the raw string

Return values
array<string|int, mixed>

the array of tokens

addSpaces()

Checks if the passed space part should be added to the returned parts and adds it.

private addSpaces(array<string|int, HeaderPart$parts, array<string|int, HeaderPart&$retParts, int $curIndex[, HeaderPart &$spacePart = null ]) : self

Never adds a space if it's the first part, otherwise only add it if either part isn't set to ignore the space

Parameters
$parts : array<string|int, HeaderPart>
$retParts : array<string|int, HeaderPart>
$curIndex : int
$spacePart : HeaderPart = null
Return values
self

addSpaceToRetParts()

Loops over the $parts array from the current position, checks if the space should be added, then adds it to $retParts and returns.

private addSpaceToRetParts(array<string|int, HeaderPart$parts, array<string|int, HeaderPart&$retParts, int $curIndex, HeaderPart &$spacePart, HeaderPart $lastPart) : self
Parameters
$parts : array<string|int, HeaderPart>
$retParts : array<string|int, HeaderPart>
$curIndex : int
$spacePart : HeaderPart
$lastPart : HeaderPart
Return values
self

isSpaceToken()

Returns true if the passed HeaderPart is a Token instance and a space.

private isSpaceToken(HeaderPart $part) : bool
Parameters
$part : HeaderPart
Return values
bool

parseRawValue()

Parses the raw header value into header parts.

private parseRawValue(string $value) : array<string|int, IHeaderPart>

Calls splitTokens to split the value into token part strings, then calls parseParts to parse the returned array.

Parameters
$value : string
Return values
array<string|int, IHeaderPart>

the array of parsed parts

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