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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\Part; |
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use ZBateson\MbWrapper\MbWrapper; |
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use DateTime; |
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use Exception; |
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/** |
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* Parses a header into a DateTime object. |
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* |
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* @author Zaahid Bateson |
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*/ |
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class DatePart extends LiteralPart |
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{ |
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/** |
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* @var DateTime the parsed date, or null if the date could not be parsed |
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*/ |
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protected $date; |
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/** |
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* Tries parsing the passed token as an RFC 2822 date, and failing that into |
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* an RFC 822 date, and failing that, tries to parse it by calling |
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* ``` new DateTime($value) ```. |
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* |
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* @param MbWrapper $charsetConverter |
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* @param string $token |
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*/ |
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public function __construct(MbWrapper $charsetConverter, $token) |
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{ |
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$dateToken = trim($token); |
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// parent::__construct converts character encoding -- may cause problems sometimes. |
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parent::__construct($charsetConverter, $dateToken); |
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// Missing "+" in timezone definition. eg: Thu, 13 Mar 2014 15:02:47 0000 (not RFC compliant) |
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// Won't result in an Exception, but in a valid DateTime in year `0000` - therefore we need to check this first: |
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if (preg_match('# [0-9]{4}$#', $dateToken)) { |
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try { |
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$this->date = new DateTime(preg_replace('# ([0-9]{4})$#', ' +$1', $dateToken)); |
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// $this->addParsingError('Invalid Date: "+/-" missing before timezone definition'); |
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} catch (Exception $e) { |
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} |
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} |
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if (!isset($this->date)) |
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{ |
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try { |
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$this->date = new DateTime($dateToken); |
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} catch (Exception $e) { |
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} |
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} |
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// @see https://bugs.php.net/bug.php?id=42486 |
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// TODO: Test is missing: |
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if (!isset($this->date) && preg_match('#UT$#', $dateToken)) { |
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try { |
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$this->date = new DateTime($dateToken . 'C'); |
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// $this->addParsingError('Invalid Date: "C" missing from timezone "UT"'); // https://github.com/zbateson/mail-mime-parser/issues/124 |
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} catch (Exception $e) { |
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} |
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} |
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} |
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/** |
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* Parse date string token |
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* @param string $dateToken Date token as string |
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* |
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* @return \DateTime|false Returns \DateTime or false on failure. |
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*/ |
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private function parseDateToken($dateToken) |
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{ |
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// First check as RFC822 which allows only 2-digit years |
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$date = DateTime::createFromFormat(DateTime::RFC822, $dateToken); |
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if ($date === false) { |
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$date = DateTime::createFromFormat(DateTime::RFC2822, $dateToken); |
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} |
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return $date; |
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} |
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/** |
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* Returns a DateTime object or false if it can't be parsed. |
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* |
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* @return DateTime |
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*/ |
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2 |
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public function getDateTime() |
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{ |
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return $this->date; |
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} |
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} |
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zbateson /
mail-mime-parser
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