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Maintains headers properly -- keeping them in their original order and allowing access to multiple headers with the same name.
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,158 @@ | ||
| <?php | ||
| /** | ||
| * This file is part of the ZBateson\MailMimeParser project. | ||
| * | ||
| * @license http://opensource.org/licenses/bsd-license.php BSD | ||
| */ | ||
| namespace ZBateson\MailMimeParser\Header; | ||
|
|
||
| use ArrayIterator; | ||
| use IteratorAggregate; | ||
| use ZBateson\MailMimeParser\Header\HeaderFactory; | ||
|
|
||
| /** | ||
| * Maintains a collection of headers for a part. | ||
| * | ||
| * @author Zaahid Bateson | ||
| */ | ||
| class HeaderContainer implements IteratorAggregate | ||
| { | ||
| /** | ||
| * @var HeaderFactory the HeaderFactory object used for created headers | ||
| */ | ||
| protected $headerFactory; | ||
|
|
||
| private $headerObjects = []; | ||
| private $headers = []; | ||
| private $headerMap = []; | ||
|
|
||
| private $nextIndex = 0; | ||
|
|
||
| public function __construct(HeaderFactory $headerFactory) | ||
| { | ||
| $this->headerFactory = $headerFactory; | ||
| } | ||
|
|
||
| /** | ||
| * Returns the string in lower-case, and with non-alphanumeric characters | ||
| * stripped out. | ||
| * | ||
| * @param string $header | ||
| * @return string | ||
| */ | ||
| private function getNormalizedHeaderName($header) | ||
| { | ||
| return preg_replace('/[^a-z0-9]/', '', strtolower($header)); | ||
| } | ||
|
|
||
| public function exists($name, $offset = 0) | ||
| { | ||
| $s = $this->getNormalizedHeaderName($name); | ||
| return isset($this->headerMap[$s][$offset]); | ||
| } | ||
|
|
||
| /** | ||
| * Returns the AbstractHeader object for the header with the given $name | ||
| * | ||
| * Note that mime headers aren't case sensitive. | ||
| * | ||
| * @param string $name | ||
| * @param int $offset | ||
| * @return \ZBateson\MailMimeParser\Header\AbstractHeader | ||
| */ | ||
| public function get($name, $offset = 0) | ||
| { | ||
| $s = $this->getNormalizedHeaderName($name); | ||
| if (isset($this->headerMap[$s][$offset])) { | ||
| return $this->getByIndex($this->headerMap[$s][$offset]); | ||
| } | ||
| return null; | ||
| } | ||
|
|
||
| public function getAll($name) | ||
| { | ||
| $s = $this->getNormalizedHeaderName($name); | ||
| $ret = []; | ||
| if (!empty($this->headerMap[$s])) { | ||
| foreach ($this->headerMap[$s] as $index) { | ||
| $ret[] = $this->getByIndex($index); | ||
| } | ||
| } | ||
| return $ret; | ||
| } | ||
|
|
||
| private function getByIndex($index) | ||
| { | ||
| if (!isset($this->headers[$index])) { | ||
| return null; | ||
| } | ||
| if ($this->headerObjects[$index] === null) { | ||
| $this->headerObjects[$index] = $this->headerFactory->newInstance( | ||
| $this->headers[$index][0], | ||
| $this->headers[$index][1] | ||
| ); | ||
| } | ||
| return $this->headerObjects[$index]; | ||
| } | ||
|
|
||
| public function remove($name, $offset = 0) | ||
| { | ||
| $s = $this->getNormalizedHeaderName($name); | ||
| if (isset($this->headerMap[$s][$offset])) { | ||
| $index = $this->headerMap[$s][$offset]; | ||
| array_splice($this->headerMap[$s], $offset, 1); | ||
| unset($this->headers[$index]); | ||
| unset($this->headerObjects[$index]); | ||
| return true; | ||
| } | ||
| return false; | ||
| } | ||
|
|
||
| public function removeAll($name) | ||
| { | ||
| $s = $this->getNormalizedHeaderName($name); | ||
| if (!empty($this->headerMap[$s])) { | ||
| foreach ($this->headerMap[$s] as $i) { | ||
| unset($this->headers[$i]); | ||
| unset($this->headerObjects[$i]); | ||
| } | ||
| $this->headerMap[$s] = []; | ||
| return true; | ||
| } | ||
| return false; | ||
| } | ||
|
|
||
| public function add($name, $value) | ||
| { | ||
| $s = $this->getNormalizedHeaderName($name); | ||
| $this->headers[$this->nextIndex] = [ $name, $value ]; | ||
| $this->headerObjects[$this->nextIndex] = null; | ||
| if (!isset($this->headerMap[$s])) { | ||
| $this->headerMap[$s] = []; | ||
| } | ||
| array_push($this->headerMap[$s], $this->nextIndex); | ||
| $this->nextIndex++; | ||
| } | ||
|
|
||
| public function set($name, $value, $offset = 0) | ||
| { | ||
| $s = $this->getNormalizedHeaderName($name); | ||
| if (!isset($this->headerMap[$s][$offset])) { | ||
| $this->add($name, $value); | ||
| return; | ||
| } | ||
| $i = $this->headerMap[$s][$offset]; | ||
| $this->headers[$i] = [ $name, $value ]; | ||
| $this->headerObjects[$i] = null; | ||
| } | ||
|
|
||
| public function getHeaders() | ||
| { | ||
| return array_values(array_filter($this->headers)); | ||
| } | ||
|
|
||
| public function getIterator() | ||
| { | ||
| return new ArrayIterator($this->getHeaders()); | ||
| } | ||
| } |
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