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<?php
/**
* Zend Framework (http://framework.zend.com/)
*
* @link http://github.com/zendframework/zf2 for the canonical source repository
* @copyright Copyright (c) 2005-2012 Zend Technologies USA Inc. (http://www.zend.com)
* @license http://framework.zend.com/license/new-bsd New BSD License
* @package Zend_Mime
*/
namespace Zend\Mime;
/**
* Class representing a MIME part.
*
* @category Zend
* @package Zend_Mime
*/
class Part
{
public $type = Mime::TYPE_OCTETSTREAM;
public $encoding = Mime::ENCODING_8BIT;
public $id;
public $disposition;
public $filename;
public $description;
public $charset;
public $boundary;
public $location;
public $language;
protected $content;
protected $isStream = false;
/**
* create a new Mime Part.
* The (unencoded) content of the Part as passed
* as a string or stream
*
* @param mixed $content String or Stream containing the content
*/
public function __construct($content)
{
$this->content = $content;
if (is_resource($content)) {
$this->isStream = true;
}
}
/**
* @todo setters/getters
* @todo error checking for setting $type
* @todo error checking for setting $encoding
*/
/**
* check if this part can be read as a stream.
* if true, getEncodedStream can be called, otherwise
* only getContent can be used to fetch the encoded
* content of the part
*
* @return bool
*/
public function isStream()
{
return $this->isStream;
}
/**
* if this was created with a stream, return a filtered stream for
* reading the content. very useful for large file attachments.
*
* @return stream
* @throws Exception\RuntimeException if not a stream or unable to append filter
*/
public function getEncodedStream($EOL = Mime::LINEEND)
{
if (!$this->isStream) {
throw new Exception\RuntimeException('Attempt to get a stream from a string part');
}
//stream_filter_remove(); // ??? is that right?
switch ($this->encoding) {
case Mime::ENCODING_QUOTEDPRINTABLE:
$filter = stream_filter_append(
$this->content,
'convert.quoted-printable-encode',
STREAM_FILTER_READ,
array(
'line-length' => 76,
'line-break-chars' => $EOL
)
);
if (!is_resource($filter)) {
throw new Exception\RuntimeException('Failed to append quoted-printable filter');
}
break;
case Mime::ENCODING_BASE64:
$filter = stream_filter_append(
$this->content,
'convert.base64-encode',
STREAM_FILTER_READ,
array(
'line-length' => 76,
'line-break-chars' => $EOL
)
);
if (!is_resource($filter)) {
throw new Exception\RuntimeException('Failed to append base64 filter');
}
break;
default:
}
return $this->content;
}
/**
* Get the Content of the current Mime Part in the given encoding.
*
* @param string $EOL
* @return string
*/
public function getContent($EOL = Mime::LINEEND)
{
if ($this->isStream) {
return stream_get_contents($this->getEncodedStream($EOL));
}
return Mime::encode($this->content, $this->encoding, $EOL);
}
/**
* Get the RAW unencoded content from this part
* @return string
*/
public function getRawContent()
{
if ($this->isStream) {
return stream_get_contents($this->content);
}
return $this->content;
}
/**
* Create and return the array of headers for this MIME part
*
* @access public
* @param string $EOL
* @return array
*/
public function getHeadersArray($EOL = Mime::LINEEND)
{
$headers = array();
$contentType = $this->type;
if ($this->charset) {
$contentType .= '; charset=' . $this->charset;
}
if ($this->boundary) {
$contentType .= ';' . $EOL
. " boundary=\"" . $this->boundary . '"';
}
$headers[] = array('Content-Type', $contentType);
if ($this->encoding) {
$headers[] = array('Content-Transfer-Encoding', $this->encoding);
}
if ($this->id) {
$headers[] = array('Content-ID', '<' . $this->id . '>');
}
if ($this->disposition) {
$disposition = $this->disposition;
if ($this->filename) {
$disposition .= '; filename="' . $this->filename . '"';
}
$headers[] = array('Content-Disposition', $disposition);
}
if ($this->description) {
$headers[] = array('Content-Description', $this->description);
}
if ($this->location) {
$headers[] = array('Content-Location', $this->location);
}
if ($this->language) {
$headers[] = array('Content-Language', $this->language);
}
return $headers;
}
/**
* Return the headers for this part as a string
*
* @param string $EOL
* @return String
*/
public function getHeaders($EOL = Mime::LINEEND)
{
$res = '';
foreach ($this->getHeadersArray($EOL) as $header) {
$res .= $header[0] . ': ' . $header[1] . $EOL;
}
return $res;
}
}
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