- fix message cache clearing when folder is empty + small max() warning fix

alecpl

2009-10-19 efe93ad11610fcfd42c76a1cdddb07be00f8cf1b

- fix message cache clearing when folder is empty + small max() warning fix

 program/include/rcube_imap.php

@@ -603,21 +603,23 @@
      {
        if ($this->skip_deleted) {
          // @TODO: this could be cached
      $msg_index = $this->_search_index($mailbox, 'ALL UNDELETED');
          $max = max($msg_index);
          list($begin, $end) = $this->_get_message_range(count($msg_index), $page);
          $msg_index = array_slice($msg_index, $begin, $end-$begin);
      if ($msg_index = $this->_search_index($mailbox, 'ALL UNDELETED')) {
            $max = max($msg_index);
            list($begin, $end) = $this->_get_message_range(count($msg_index), $page);
            $msg_index = array_slice($msg_index, $begin, $end-$begin);
        }
    } else if ($max = iil_C_CountMessages($this->conn, $mailbox)) {
          list($begin, $end) = $this->_get_message_range($max, $page);
      $msg_index = range($begin+1, $end);
    } else
      return array();
      $msg_index = array();

        if ($slice)
          $msg_index = array_slice($msg_index, ($this->sort_order == 'DESC' ? 0 : -$slice), $slice);

        // fetch reqested headers from server
        $this->_fetch_headers($mailbox, join(",", $msg_index), $a_msg_headers, $cache_key);
    if ($msg_index)
          $this->_fetch_headers($mailbox, join(",", $msg_index), $a_msg_headers, $cache_key);
      }
    // use SORT command
    else if ($this->get_capability('sort') && ($msg_index = iil_C_Sort($this->conn, $mailbox, $this->sort_field, $this->skip_deleted ? 'UNDELETED' : '')))
@@ -633,13 +635,8 @@
      $this->_fetch_headers($mailbox, join(',', $msg_index), $a_msg_headers, $cache_key);
      }
    // fetch specified header for all messages and sort
    else
    else if ($a_index = iil_C_FetchHeaderIndex($this->conn, $mailbox, "1:*", $this->sort_field, $this->skip_deleted))
      {
      $a_index = iil_C_FetchHeaderIndex($this->conn, $mailbox, "1:*", $this->sort_field, $this->skip_deleted);

      if (empty($a_index))
        return array();

      asort($a_index); // ASC
      $msg_index = array_keys($a_index);
      $max = max($msg_index);