Horde_Mime_Part::_getStructure PHP Method

    protected static function _getStructure($header, $body, array $opts = array())
    {
        $opts = array_merge(array('ctype' => 'text/plain', 'forcemime' => false, 'level' => 0, 'no_body' => false), $opts);
        /* Parse headers text into a Horde_Mime_Headers object. */
        $hdrs = Horde_Mime_Headers::parseHeaders($header);
        $ob = new Horde_Mime_Part();
        /* This is not a MIME message. */
        if (!$opts['forcemime'] && !isset($hdrs['MIME-Version'])) {
            $ob->setType('text/plain');
            if ($len = strlen($body)) {
                if ($opts['no_body']) {
                    $ob->setBytes($len);
                } else {
                    $ob->setContents($body);
                }
            }
            return $ob;
        }
        /* Content type. */
        if ($tmp = $hdrs['Content-Type']) {
            $ob->setType($tmp->value);
            foreach ($tmp->params as $key => $val) {
                $ob->setContentTypeParameter($key, $val);
            }
        } else {
            $ob->setType($opts['ctype']);
        }
        /* Content transfer encoding. */
        if ($tmp = $hdrs['Content-Transfer-Encoding']) {
            $ob->setTransferEncoding(strval($tmp));
        }
        /* Content-Description. */
        if ($tmp = $hdrs['Content-Description']) {
            $ob->setDescription(strval($tmp));
        }
        /* Content-Disposition. */
        if ($tmp = $hdrs['Content-Disposition']) {
            $ob->setDisposition($tmp->value);
            foreach ($tmp->params as $key => $val) {
                $ob->setDispositionParameter($key, $val);
            }
        }
        /* Content-Duration */
        if ($tmp = $hdrs['Content-Duration']) {
            $ob->setDuration(strval($tmp));
        }
        /* Content-ID. */
        if ($tmp = $hdrs['Content-Id']) {
            $ob->setContentId(strval($tmp));
        }
        if (($len = strlen($body)) && $ob->getPrimaryType() != 'multipart') {
            if ($opts['no_body']) {
                $ob->setBytes($len);
            } else {
                $ob->setContents($body);
            }
        }
        if (++$opts['level'] >= self::NESTING_LIMIT) {
            return $ob;
        }
        /* Process subparts. */
        switch ($ob->getPrimaryType()) {
            case 'message':
                if ($ob->getSubType() == 'rfc822') {
                    $ob[] = self::parseMessage($body, array('forcemime' => true, 'no_body' => $opts['no_body']));
                }
                break;
            case 'multipart':
                $boundary = $ob->getContentTypeParameter('boundary');
                if (!is_null($boundary)) {
                    foreach (self::_findBoundary($body, 0, $boundary) as $val) {
                        if (!isset($val['length'])) {
                            break;
                        }
                        $subpart = substr($body, $val['start'], $val['length']);
                        $hdr_pos = self::_findHeader($subpart, self::EOL);
                        $ob[] = self::_getStructure(substr($subpart, 0, $hdr_pos), substr($subpart, $hdr_pos + 2), array('ctype' => $ob->getSubType() == 'digest' ? 'message/rfc822' : 'text/plain', 'forcemime' => true, 'level' => $opts['level'], 'no_body' => $opts['no_body']));
                    }
                }
                break;
        }
        return $ob;
    }