MailMimeParser 2.3

MimeLiteralPart extends LiteralPart
in package

Represents a single mime header part token, with the possibility of it being MIME-Encoded as per RFC-2047.

MimeLiteralPart automatically decodes the value if it's encoded.

Tags
author

Zaahid Bateson

Table of Contents

MIME_PART_PATTERN  = '=\\?[^?=]+\\?[QBqb]\\?[^\\?]+\\?='
MIME_PART_PATTERN_NO_QUOTES  = '=\\?[^\\?=]+\\?[QBqb]\\?[^\\?"]+\\?='
$canIgnoreSpacesAfter  : bool
$canIgnoreSpacesBefore  : bool
$charsetConverter  : MbWrapper
$languages  : array<string|int, mixed>
$value  : string
__construct()  : mixed
Decoding the passed token value if it's mime-encoded and assigns the decoded value to a member variable. Sets canIgnoreSpacesBefore and canIgnoreSpacesAfter.
__toString()  : string
Returns the value of the part (which is a string).
getLanguageArray()  : array<string|int, array<string|int, string>>
Returns an array of parts mapped to languages in the header value, for instance the string:
getValue()  : string|null
Returns the part's value.
ignoreSpacesAfter()  : bool
Returns true if spaces before this part should be ignored.
ignoreSpacesBefore()  : bool
Returns true if spaces before this part should be ignored.
addToLanguage()  : self
Adds the passed part into the languages array with the given language.
convertEncoding()  : string
Ensures the encoding of the passed string is set to UTF-8.
decodeMime()  : string
Finds and replaces mime parts with their values.
decodeMatchedEntity()  : string
Decodes a matched mime entity part into a string and returns it, after adding the string into the languages array.
decodeSplitPart()  : string
Decodes a single mime-encoded entity.

Constants

MIME_PART_PATTERN

public string MIME_PART_PATTERN = '=\\?[^?=]+\\?[QBqb]\\?[^\\?]+\\?='

regex pattern matching a mime-encoded part

MIME_PART_PATTERN_NO_QUOTES

public string MIME_PART_PATTERN_NO_QUOTES = '=\\?[^\\?=]+\\?[QBqb]\\?[^\\?"]+\\?='

regex pattern used when parsing parameterized headers

Properties

$canIgnoreSpacesAfter

protected bool $canIgnoreSpacesAfter = false

set to true to ignore spaces after this part

$canIgnoreSpacesBefore

protected bool $canIgnoreSpacesBefore = false

set to true to ignore spaces before this part

$charsetConverter

protected MbWrapper $charsetConverter

the charset converter used for converting strings in HeaderPart::convertEncoding

$languages

protected array<string|int, mixed> $languages = []

maintains an array mapping rfc1766 language tags to parts of text in the value.

Each array element is an array containing two elements, one with key 'lang', and another with key 'value'.

$value

protected string $value

the value of the part

Methods

__construct()

Decoding the passed token value if it's mime-encoded and assigns the decoded value to a member variable. Sets canIgnoreSpacesBefore and canIgnoreSpacesAfter.

public __construct(MbWrapper $charsetConverter, string $token) : mixed
Parameters
$charsetConverter : MbWrapper
$token : string
Return values
mixed

__toString()

Returns the value of the part (which is a string).

public __toString() : string
Return values
string

the value

getLanguageArray()

Returns an array of parts mapped to languages in the header value, for instance the string:

public getLanguageArray() : array<string|int, array<string|int, string>>

'Hello and =?UTF-8fr-be?Q?bonjour_?= =?UTF-8it?Q?mi amici?=. Welcome!'

Would be mapped in the returned array as follows:

[
    0 => [ 'lang' => null, 'value' => 'Hello and ' ],
    1 => [ 'lang' => 'fr-be', 'value' => 'bonjour ' ],
    3 => [ 'lang' => 'it', 'value' => 'mi amici' ],
    4 => [ 'lang' => null, 'value' => ' Welcome!' ]
]
Return values
array<string|int, array<string|int, string>>

getValue()

Returns the part's value.

public getValue() : string|null
Return values
string|null

the value of the part

ignoreSpacesAfter()

Returns true if spaces before this part should be ignored.

public ignoreSpacesAfter() : bool

Overridden to return $this->canIgnoreSpacesAfter which is setup in the constructor.

Return values
bool

ignoreSpacesBefore()

Returns true if spaces before this part should be ignored.

public ignoreSpacesBefore() : bool

Overridden to return $this->canIgnoreSpacesBefore which is setup in the constructor.

Return values
bool

addToLanguage()

Adds the passed part into the languages array with the given language.

protected addToLanguage(string $part[, string|null $language = null ]) : self
Parameters
$part : string
$language : string|null = null
Return values
self

convertEncoding()

Ensures the encoding of the passed string is set to UTF-8.

protected convertEncoding(string $str[, string $from = 'ISO-8859-1' ][, bool $force = false ]) : string

The method does nothing if the passed $from charset is UTF-8 already, or if $force is set to false and mb_check_encoding for $str returns true for 'UTF-8'.

Parameters
$str : string
$from : string = 'ISO-8859-1'
$force : bool = false
Return values
string

utf-8 string

decodeMime()

Finds and replaces mime parts with their values.

protected decodeMime(string $value) : string

The method splits the token value into an array on mime-part-patterns, either replacing a mime part with its value by calling iconv_mime_decode or converts the encoding on the text part by calling convertEncoding.

Parameters
$value : string
Return values
string

decodeMatchedEntity()

Decodes a matched mime entity part into a string and returns it, after adding the string into the languages array.

private decodeMatchedEntity(array<string|int, string> $matches) : string
Parameters
$matches : array<string|int, string>
Return values
string

decodeSplitPart()

Decodes a single mime-encoded entity.

private decodeSplitPart(string $entity) : string

Unfortunately, mb_decode_header fails for many charsets on PHP 5.4 and PHP 5.5 (even if they're listed as supported). iconv_mime_decode doesn't support all charsets.

Parsing out the charset and body of the encoded entity seems to be the way to go to support the most charsets.

Parameters
$entity : string
Return values
string

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