- preformance fix: don't load full folders list when checking for folder ...

alecpl

2010-05-03 16378fe3a255943c7b2f374443158670a0eedf86

- preformance fix: don't load full folders list when checking for folder
  existance in sendmail.inc, use internal cache to make mailbox_exists()
  faster when called more than one time for the same folder

 program/include/rcube_imap.php

@@ -2774,6 +2774,10 @@
            if ($mbox_name == 'INBOX')
                return true;

            $key = $subscription ? 'subscribed' : 'existing';
            if (is_array($this->icache[$key]) && in_array($mbox_name, $this->icache[$key]))
                return true;

            if ($subscription) {
                $a_folders = $this->conn->listSubscribed($this->mod_mailbox(''), $mbox_name);
            }
@@ -2782,6 +2786,7 @@
            }
            
            if (is_array($a_folders) && in_array($this->mod_mailbox($mbox_name), $a_folders)) {
                $this->icache[$key][] = $mbox_name;
                return true;
            }
        }

 program/steps/mail/sendmail.inc

@@ -566,17 +566,14 @@

if ($store_target)
  {
  // check if mailbox exists
  if (!in_array($store_target, $IMAP->list_mailboxes()))
    {
  // check if folder is subscribed
  if ($IMAP->mailbox_exists($store_target, true))
    $store_folder = true;
      // folder may be existing but not subscribed (#1485241)
      if (!in_array($store_target, $IMAP->list_unsubscribed()))
        $store_folder = $IMAP->create_mailbox($store_target, TRUE);
  else if (!$IMAP->mailbox_exists($store_target))
    $store_folder = $IMAP->create_mailbox($store_target, true);
      else if ($IMAP->subscribe($store_target))
        $store_folder = TRUE;
    }
  else
    $store_folder = TRUE;
    $store_folder = true;

  // append message to sent box
  if ($store_folder) {