Got message filtering working.

FossilOrigin-Name: 47c9a66b9c547f9af30bebd226b757d475f616b976baf315faae653a01cdf97a

src/sieb.nim

@@ -1,14 +1,16 @@
 # vim: set et nosta sw=4 ts=4 :
 
 import
-    std/os
+    std/os,
+    std/strformat
 
 import
     lib/config,
-    lib/maildir,
+    lib/message,
     lib/util
 
 
+# Without this, we got nuthin'!
 if not existsEnv( "HOME" ):
     deferral "Unable to determine HOME from environment."
 
@@ -16,13 +18,13 @@ let
     home    = getHomeDir()
     opts    = parse_cmdline()
     conf    = get_config( opts.config )
-    default = newMaildir( home & "Maildir" )
-
-let dest = default.subDir( ".wooo" )
-
-let msg = default.newMessage
-msg.writeStdin()
-# msg.filter()
-msg.save( dest )
+    default = newMaildir( joinPath( home, "Maildir" ) )
 
+# let dest = default.subDir( "woo" )
+var msg = default.newMessage
+msg.writeStdin
+for filter in conf.pre_filter:
+    debug "Running pre-filter: {filter}".fmt
+    msg = msg.filter( filter )
+msg.save()