/**
  * parse headers and set 'date', 'from', 'to', 'cc', 'bcc', 'subject', 'sender' fields
  *
  * @param array $_headers
  * @return void
  */
 public function parseHeaders(array $_headers)
 {
     // remove duplicate headers (which can't be set twice in real life)
     foreach (array('date', 'from', 'to', 'cc', 'bcc', 'subject', 'sender') as $field) {
         if (isset($_headers[$field]) && is_array($_headers[$field])) {
             $_headers[$field] = $_headers[$field][0];
         }
     }
     $this->importance = isset($_headers['importance']) && strtolower($_headers['importance']) === 'high' ? true : false;
     $this->subject = isset($_headers['subject']) ? Expressomail_Message::convertText($_headers['subject']) : null;
     $this->reading_conf = array_key_exists('disposition-notification-to', $_headers) && $_headers['disposition-notification-to'] ? true : false;
     if (array_key_exists('date', $_headers)) {
         $this->sent = Expressomail_Message::convertDate($_headers['date']);
     } elseif (array_key_exists('resent-date', $_headers)) {
         $this->sent = Expressomail_Message::convertDate($_headers['resent-date']);
     }
     $punycodeConverter = Expressomail_Controller_Message::getInstance()->getPunycodeConverter();
     foreach (array('to', 'cc', 'bcc', 'from', 'sender') as $field) {
         if (isset($_headers[$field])) {
             $value = Expressomail_Message::convertAddresses($_headers[$field], $punycodeConverter);
             switch ($field) {
                 case 'from':
                     $this->from_email = isset($value[0]) && array_key_exists('email', $value[0]) ? $value[0]['email'] : '';
                     $this->from_name = isset($value[0]) && array_key_exists('name', $value[0]) && !empty($value[0]['name']) ? $value[0]['name'] : $this->from_email;
                     break;
                 case 'sender':
                     $this->sender = isset($value[0]) && array_key_exists('email', $value[0]) ? '<' . $value[0]['email'] . '>' : '';
                     if (isset($value[0]) && array_key_exists('name', $value[0]) && !empty($value[0]['name'])) {
                         $this->sender = '"' . $value[0]['name'] . '" ' . $this->sender;
                     }
                     break;
                 default:
                     $this->{$field} = $value;
             }
         }
     }
 }
 /**
  * Compare order of Expressomail_Model_Message acording to Tinebase_Model_Pagination
  * @param Expressomail_Model_Message $msg1
  * @param Expressomail_Model_Message $msg2
  * @return int
  *
  * @todo Convert int security value in Expressomail_Smime to corresponding string type
  */
 public function compare($msg1, $msg2)
 {
     switch ($this->_pagination->sort) {
         case 'received':
             // Integer
             $value1 = $msg1[$this->_pagination->sort];
             $value2 = $msg2[$this->_pagination->sort];
         case 'sent':
             // Integer
             $value1 = isset($value1) ? $value1 : $msg1['header']['date'];
             $value2 = isset($value2) ? $value2 : $msg2['header']['date'];
             $value1 = intval(Expressomail_Message::convertDate($value1)->format("U"));
             $value2 = intval(Expressomail_Message::convertDate($value2)->format("U"));
         case 'size':
             // Integer
             $value1 = isset($value1) ? $value1 : intval($msg1[$this->_pagination->sort]);
             $value2 = isset($value2) ? $value2 : intval($msg2[$this->_pagination->sort]);
             return $this->compareIntegers($value1, $value2);
         case 'folder_id':
             // Strings
             $folders = array();
             $translate = Tinebase_Translation::getTranslation('Expressomail');
             foreach (array($msg1, $msg2) as $msg) {
                 $folder = Expressomail_Backend_Folder::decodeFolderUid($msg[$this->_pagination->sort]);
                 // Optimization! Only create the account object once for every sort operation.
                 $account = array_key_exists($folder['accountId'], $this->_accountMap) ? $this->_accountMap[$folder['accountId']] : ($this->_accountMap[$folder['accountId']] = Expressomail_Controller_Account::getInstance()->get($folder['accountId']));
                 $aux1 = explode('/', $folder['globalName']);
                 $aux2 = '';
                 foreach ($aux1 as $value) {
                     $aux2 .= $translate->_($value) . '/';
                 }
                 $folders[] = $account->name . '/' . substr($aux2, 0, strlen($aux2) - 1);
             }
             list($value1, $value2) = $folders;
             //TODO: Should use a static method implemented on Model_Message or Expressomail_Smime
         //TODO: Should use a static method implemented on Model_Message or Expressomail_Smime
         case 'smime':
             $value1 = isset($value1) ? $value1 : $this->processSmimeValue($msg1['structure']);
             $value2 = isset($value2) ? $value2 : $this->processSmimeValue($msg2['structure']);
         case 'flags':
             // Strings
             if (!isset($value1)) {
                 sort($msg1['flags']);
                 $value1 = implode(',', $msg1['flags']);
             }
             if (!isset($value2)) {
                 sort($msg2['flags']);
                 $value2 = implode(',', $msg2['flags']);
             }
         case 'subject':
             // Strings
             $value1 = isset($value1) ? $value1 : $msg1['header'][$this->_pagination->sort];
             $value2 = isset($value2) ? $value2 : $msg2['header'][$this->_pagination->sort];
         case 'id':
             // Strings
             $value1 = isset($value1) ? $value1 : $msg1[$this->_pagination->sort];
             $value2 = isset($value2) ? $value2 : $msg2[$this->_pagination->sort];
             return $this->compareStrings($value1, $value2);
         case 'sender':
         case 'to':
         case 'from_name':
         case 'from_email':
             // Strings
             list($header, $field) = explode('_', $this->_pagination->sort);
             $field = empty($field) ? 'email' : $field;
             $address1 = Expressomail_Message::convertAddresses($msg1['header'][$header]);
             $address2 = Expressomail_Message::convertAddresses($msg2['header'][$header]);
             return $this->compareStrings(isset($address1[0]) && array_key_exists($field, $address1[0]) ? $address1[0][$field] : '', isset($address2[0]) && array_key_exists($field, $address2[0]) ? $address2[0][$field] : '');
     }
 }