1 files changed, 21 insertions, 0 deletions
diff --git a/alot/settings/checks.py b/alot/settings/checks.py
new file mode 100644
index 00000000..693d3044
--- /dev/null
+++ b/alot/settings/checks.py
@@ -0,0 +1,21 @@
+import mailbox
+import re
+from urlparse import urlparse
+
+def mail_container(value):
+    if not re.match(r'.*://.*', value):
+        raise VdtTypeError(value)
+    mburl = urlparse(value)
+    if mburl.scheme == 'mbox':
+        box = mailbox.mbox(mburl.path)
+    elif mburl.scheme == 'maildir':
+        box = mailbox.Maildir(mburl.path)
+    elif mburl.scheme == 'mh':
+        box = mailbox.MH(mburl.path)
+    elif mburl.scheme == 'babyl':
+        box = mailbox.Babyl(mburl.path)
+    elif mburl.scheme == 'mmdf':
+        box = mailbox.MMDF(mburl.path)
+    else:
+        raise VdtTypeError(value)
+    return box