original_string: protected function _getHeaders($id, $format, $key)
      {
          switch ($format) {
          case self::HEADER_STREAM:
              if (!isset($this->_data[$key][$id])) {
                  $data = null;
              } elseif (is_object($this->_data[$key][$id])) {
                  switch ($key) {
                  case Horde_Imap_Client::FETCH_HEADERS:
                      $data = $this->_getHeaders($id, 0, $key);
                      break;
  
                  case Horde_Imap_Client::FETCH_HEADERTEXT:
                  case Horde_Imap_Client::FETCH_MIMEHEADER:
                      $data = $this->_data[$key][$id];
                      break;
                  }
              } else {
                  $data = $this->_data[$key][$id];
              }
  
              return $this->_msgText(true, $data);
  
          case self::HEADER_PARSE:
              if (!isset($this->_data[$key][$id])) {
                  return new Horde_Mime_Headers();
              } elseif (is_object($this->_data[$key][$id])) {
                  switch ($key) {
                  case Horde_Imap_Client::FETCH_HEADERS:
                      return clone $this->_data[$key][$id];
  
                  case Horde_Imap_Client::FETCH_HEADERTEXT:
                  case Horde_Imap_Client::FETCH_MIMEHEADER:
                      $hdrs = $this->_data[$key][$id];
                      break;
                  }
              } else {
                  $hdrs = $this->_getHeaders($id, self::HEADER_STREAM, $key);
              }
  
              return Horde_Mime_Headers::parseHeaders($hdrs);
          }
  
          if (!isset($this->_data[$key][$id])) {
              return '';
          }
  
          if (is_object($this->_data[$key][$id])) {
              switch ($key) {
              case Horde_Imap_Client::FETCH_HEADERS:
                  return $this->_data[$key][$id]->toString(
                      array('nowrap' => true)
                  );
  
              case Horde_Imap_Client::FETCH_HEADERTEXT:
              case Horde_Imap_Client::FETCH_MIMEHEADER:
                  return strval($this->_data[$key][$id]);
              }
          }
  
          return $this->_msgText(false, $this->_data[$key][$id]);
      }
code: protected function _getHeaders($id, $format, $key)
      {
          switch ($format) {
          case self::HEADER_STREAM:
              if (!isset($this->_data[$key][$id])) {
                  $data = null;
              } elseif (is_object($this->_data[$key][$id])) {
                  switch ($key) {
                  case Horde_Imap_Client::FETCH_HEADERS:
                      $data = $this->_getHeaders($id, 0, $key);
                      break;
  
                  case Horde_Imap_Client::FETCH_HEADERTEXT:
                  case Horde_Imap_Client::FETCH_MIMEHEADER:
                      $data = $this->_data[$key][$id];
                      break;
                  }
              } else {
                  $data = $this->_data[$key][$id];
              }
  
              return $this->_msgText(true, $data);
  
          case self::HEADER_PARSE:
              if (!isset($this->_data[$key][$id])) {
                  return new Horde_Mime_Headers();
              } elseif (is_object($this->_data[$key][$id])) {
                  switch ($key) {
                  case Horde_Imap_Client::FETCH_HEADERS:
                      return clone $this->_data[$key][$id];
  
                  case Horde_Imap_Client::FETCH_HEADERTEXT:
                  case Horde_Imap_Client::FETCH_MIMEHEADER:
                      $hdrs = $this->_data[$key][$id];
                      break;
                  }
              } else {
                  $hdrs = $this->_getHeaders($id, self::HEADER_STREAM, $key);
              }
  
              return Horde_Mime_Headers::parseHeaders($hdrs);
          }
  
          if (!isset($this->_data[$key][$id])) {
              return '';
          }
  
          if (is_object($this->_data[$key][$id])) {
              switch ($key) {
              case Horde_Imap_Client::FETCH_HEADERS:
                  return $this->_data[$key][$id]->toString(
                      array('nowrap' => true)
                  );
  
              case Horde_Imap_Client::FETCH_HEADERTEXT:
              case Horde_Imap_Client::FETCH_MIMEHEADER:
                  return strval($this->_data[$key][$id]);
              }
          }
  
          return $this->_msgText(false, $this->_data[$key][$id]);
      }
code_tokens: protected function _getHeaders ( $ id , $ format , $ key ) { switch ( $ format ) { case self :: HEADER_STREAM : if ( ! isset ( $ this -> _data [ $ key ] [ $ id ] ) ) { $ data = null ; } elseif ( is_object ( $ this -> _data [ $ key ] [ $ id ] ) ) { switch ( $ key ) { case Horde_Imap_Client :: FETCH_HEADERS : $ data = $ this -> _getHeaders ( $ id , 0 , $ key ) ; break ; case Horde_Imap_Client :: FETCH_HEADERTEXT : case Horde_Imap_Client :: FETCH_MIMEHEADER : $ data = $ this -> _data [ $ key ] [ $ id ] ; break ; } } else { $ data = $ this -> _data [ $ key ] [ $ id ] ; } return $ this -> _msgText ( true , $ data ) ; case self :: HEADER_PARSE : if ( ! isset ( $ this -> _data [ $ key ] [ $ id ] ) ) { return new Horde_Mime_Headers ( ) ; } elseif ( is_object ( $ this -> _data [ $ key ] [ $ id ] ) ) { switch ( $ key ) { case Horde_Imap_Client :: FETCH_HEADERS : return clone $ this -> _data [ $ key ] [ $ id ] ; case Horde_Imap_Client :: FETCH_HEADERTEXT : case Horde_Imap_Client :: FETCH_MIMEHEADER : $ hdrs = $ this -> _data [ $ key ] [ $ id ] ; break ; } } else { $ hdrs = $ this -> _getHeaders ( $ id , self :: HEADER_STREAM , $ key ) ; } return Horde_Mime_Headers :: parseHeaders ( $ hdrs ) ; } if ( ! isset ( $ this -> _data [ $ key ] [ $ id ] ) ) { return '' ; } if ( is_object ( $ this -> _data [ $ key ] [ $ id ] ) ) { switch ( $ key ) { case Horde_Imap_Client :: FETCH_HEADERS : return $ this -> _data [ $ key ] [ $ id ] -> toString ( array ( 'nowrap' => true ) ) ; case Horde_Imap_Client :: FETCH_HEADERTEXT : case Horde_Imap_Client :: FETCH_MIMEHEADER : return strval ( $ this -> _data [ $ key ] [ $ id ] ) ; } } return $ this -> _msgText ( false , $ this -> _data [ $ key ] [ $ id ] ) ; }
docstring: Return representation of a header field.
  
  @param string $id       The header id.
  @param integer $format  The return format. If self::HEADER_PARSE,
  returns a Horde_Mime_Headers object. If
  self::HEADER_STREAM, returns a stream.
  Otherwise, returns header text.
  @param integer $key     The array key where the data is stored in the
  internal array.
  
  @return mixed  The data in the format specified by $format.
docstring_tokens: Return representation of a header field .