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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\Message; |
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use ZBateson\MailMimeParser\Message\IMessagePart; |
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use ZBateson\MailMimeParser\Message\IMimePart; |
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/** |
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* Collection of static methods that return callables for common IMessagePart |
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* filters. |
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* |
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* @author Zaahid Bateson |
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*/ |
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abstract class PartFilter |
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{ |
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/** |
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* Provides an 'attachment' filter used by Message::getAttachmentPart. |
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* |
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* The method filters out the following types of parts: |
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* - text/plain and text/html parts that do not have an 'attachment' |
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* disposition |
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* - any part that returns true for isMultiPart() |
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* - any part that returns true for isSignaturePart() |
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* |
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* @return callable |
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*/ |
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public static function fromAttachmentFilter() |
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{ |
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return function (IMessagePart $part) { |
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$type = strtolower($part->getContentType()); |
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if (in_array($type, [ 'text/plain', 'text/html' ]) && strcasecmp($part->getContentDisposition(), 'inline') === 0) { |
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return false; |
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} |
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return !(($part instanceof IMimePart) && ($part->isMultiPart() || $part->isSignaturePart())); |
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}; |
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} |
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/** |
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* Provides a filter that keeps parts that contain a header of $name with a |
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* value that matches $value (case insensitive). |
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* |
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* By default signed parts are excluded. Pass FALSE to the third parameter |
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* to include them. |
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* |
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* @param string $name the header name to look up |
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* @param string $value the value to match |
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* @param bool $excludeSignedParts |
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* @return callable |
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*/ |
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public static function fromHeaderValue($name, $value, $excludeSignedParts = true) |
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{ |
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return function(IMessagePart $part) use ($name, $value, $excludeSignedParts) { |
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if ($part instanceof IMimePart) { |
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if ($excludeSignedParts && $part->isSignaturePart()) { |
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return false; |
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} |
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return strcasecmp($part->getHeaderValue($name), $value) === 0; |
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} |
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return false; |
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}; |
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} |
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/** |
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* Includes only parts that match the passed $mimeType in the return value |
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* of a call to 'getContentType()'. |
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* |
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* @param string $mimeType |
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* @return callable |
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*/ |
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public static function fromContentType($mimeType) |
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{ |
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return function(IMessagePart $part) use ($mimeType) { |
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return strcasecmp($part->getContentType(), $mimeType) === 0; |
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}; |
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} |
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/** |
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* Returns parts matching $mimeType that do not have a Content-Disposition |
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* set to 'attachment'. |
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* |
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* @param string $mimeType |
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* @return callable |
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*/ |
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public static function fromInlineContentType($mimeType) |
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{ |
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return function(IMessagePart $part) use ($mimeType) { |
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return strcasecmp($part->getContentType(), $mimeType) === 0 |
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&& strcasecmp($part->getContentDisposition(), 'attachment') !== 0; |
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}; |
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} |
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/** |
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* Finds parts with the passed disposition (matching against |
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* IMessagePart::getContentDisposition()), optionally including |
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* multipart parts and signed parts. |
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* |
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* @param string $disposition |
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* @param bool $includeMultipart |
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* @param bool $includeSignedParts |
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* @return type |
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*/ |
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public static function fromDisposition($disposition, $includeMultipart = false, $includeSignedParts = false) |
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{ |
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return function(IMessagePart $part) use ($disposition, $includeMultipart, $includeSignedParts) { |
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if (($part instanceof IMimePart) && ((!$includeMultipart && $part->isMultiPart()) || (!$includeSignedParts && $part->isSignaturePart()))) { |
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return false; |
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} |
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return strcasecmp($part->getContentDisposition(), $disposition) === 0; |
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}; |
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} |
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} |
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zbateson /
mail-mime-parser
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