maildir: hide invalid folders

The maildir worker currently populates the list of mail folders by
listing all the filesystem subdirectories in the maildir directory.
Although there's no official specification for maildir subfolders,
they should all have cur/ new/ and tmp/ subdirectories to be valid.

This patch prevents directories that don't have those subdirectories
present on the filesystem from appearing in the account folder list.

This is useful for example to prevent ".notmuch" and ".notmuch/xapian"
from showing up in the folder list if using notmuch to index emails
while using aerc's maildir backend.

Signed-off-by: Julian Pidancet <julian.pidancet@oracle.com>
Acked-by: Tim Culverhouse <tim@timculverhouse.com>
This commit is contained in:
Julian Pidancet 2022-10-03 19:16:26 +02:00 committed by Robin Jarry
parent 8cd4770f32
commit 150aa0f498

View file

@ -78,6 +78,13 @@ func (c *Container) ListFolders() ([]string, error) {
return nil
}
// Drop dirs that lack {new,tmp,cur} subdirs
for _, sub := range []string{"new", "tmp", "cur"} {
if _, err := os.Stat(filepath.Join(path, sub)); os.IsNotExist(err) {
return filepath.SkipDir
}
}
if c.maildirpp {
// In Maildir++ layout, mailboxes are stored in a single directory
// and prefixed with a dot, and subfolders are separated by dots.