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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; |
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use ArrayIterator; |
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use IteratorAggregate; |
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use ZBateson\MailMimeParser\Header\HeaderFactory; |
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/** |
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* Maintains a collection of headers for a part. |
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* |
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* @author Zaahid Bateson |
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*/ |
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class HeaderContainer implements IteratorAggregate |
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{ |
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/** |
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* @var HeaderFactory the HeaderFactory object used for created headers |
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*/ |
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protected $headerFactory; |
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private $headerObjects = []; |
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private $headers = []; |
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private $headerMap = []; |
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private $nextIndex = 0; |
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public function __construct(HeaderFactory $headerFactory) |
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{ |
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$this->headerFactory = $headerFactory; |
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} |
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/** |
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* Returns the string in lower-case, and with non-alphanumeric characters |
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* stripped out. |
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* |
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* @param string $header |
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* @return string |
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*/ |
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private function getNormalizedHeaderName($header) |
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{ |
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return preg_replace('/[^a-z0-9]/', '', strtolower($header)); |
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} |
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public function exists($name, $offset = 0) |
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{ |
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$s = $this->getNormalizedHeaderName($name); |
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return isset($this->headerMap[$s][$offset]); |
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} |
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/** |
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* Returns the AbstractHeader object for the header with the given $name |
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* |
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* Note that mime headers aren't case sensitive. |
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* |
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* @param string $name |
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* @param int $offset |
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* @return \ZBateson\MailMimeParser\Header\AbstractHeader |
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*/ |
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public function get($name, $offset = 0) |
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{ |
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$s = $this->getNormalizedHeaderName($name); |
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if (isset($this->headerMap[$s][$offset])) { |
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return $this->getByIndex($this->headerMap[$s][$offset]); |
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} |
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return null; |
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} |
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public function getAll($name) |
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{ |
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$s = $this->getNormalizedHeaderName($name); |
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$ret = []; |
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if (!empty($this->headerMap[$s])) { |
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foreach ($this->headerMap[$s] as $index) { |
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$ret[] = $this->getByIndex($index); |
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} |
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} |
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return $ret; |
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} |
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private function getByIndex($index) |
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{ |
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if (!isset($this->headers[$index])) { |
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return null; |
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} |
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if ($this->headerObjects[$index] === null) { |
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$this->headerObjects[$index] = $this->headerFactory->newInstance( |
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$this->headers[$index][0], |
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$this->headers[$index][1] |
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); |
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} |
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return $this->headerObjects[$index]; |
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} |
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public function remove($name, $offset = 0) |
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{ |
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$s = $this->getNormalizedHeaderName($name); |
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if (isset($this->headerMap[$s][$offset])) { |
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$index = $this->headerMap[$s][$offset]; |
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array_splice($this->headerMap[$s], $offset, 1); |
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unset($this->headers[$index]); |
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unset($this->headerObjects[$index]); |
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return true; |
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} |
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return false; |
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} |
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public function removeAll($name) |
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{ |
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$s = $this->getNormalizedHeaderName($name); |
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if (!empty($this->headerMap[$s])) { |
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foreach ($this->headerMap[$s] as $i) { |
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unset($this->headers[$i]); |
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unset($this->headerObjects[$i]); |
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} |
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$this->headerMap[$s] = []; |
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return true; |
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} |
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return false; |
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} |
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public function add($name, $value) |
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{ |
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$s = $this->getNormalizedHeaderName($name); |
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$this->headers[$this->nextIndex] = [ $name, $value ]; |
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$this->headerObjects[$this->nextIndex] = null; |
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if (!isset($this->headerMap[$s])) { |
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$this->headerMap[$s] = []; |
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} |
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array_push($this->headerMap[$s], $this->nextIndex); |
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$this->nextIndex++; |
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} |
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public function set($name, $value, $offset = 0) |
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{ |
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$s = $this->getNormalizedHeaderName($name); |
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if (!isset($this->headerMap[$s][$offset])) { |
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$this->add($name, $value); |
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return; |
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} |
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$i = $this->headerMap[$s][$offset]; |
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$this->headers[$i] = [ $name, $value ]; |
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$this->headerObjects[$i] = null; |
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} |
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public function getHeaders() |
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{ |
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return array_values(array_filter($this->headers)); |
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} |
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public function getIterator() |
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{ |
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return new ArrayIterator($this->getHeaders()); |
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} |
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} |
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zbateson /
mail-mime-parser
