From 3a22bfd7afcc99a5f2ee3bedde0f17c53c21e2bf Mon Sep 17 00:00:00 2001
From: bwarsaw
Date: Tue, 28 Mar 2000 17:19:30 +0000
Subject: atexit(): A function for sys.exitfunc which will attempt to guarantee
 that the MailList object is unlocked when the script exits.

---
 bin/withlist | 25 +++++++++++++++++++++++--
 1 file changed, 23 insertions(+), 2 deletions(-)

(limited to 'bin')

diff --git a/bin/withlist b/bin/withlist
index 3ddd9ed7f..2382d61b5 100644
--- a/bin/withlist
+++ b/bin/withlist
@@ -104,6 +104,22 @@ def usage(msg='', code=1):
     sys.exit(code)
 
 
+def atexit():
+    """Unlock a locked list, but do not implicitly Save() it.
+
+    This does not get run if the interpreter exits because of a signal, or if
+    os._exit() is called.  It will get called if an exception occurs though.
+    """
+    global m
+    if not m:
+        return
+    if m.Locked():
+        print 'Unlocking (but not saving) list:', m.internal_name()
+        m.Unlock()
+    print 'Finalizing'
+    del m
+
+
 
 def main():
     global m
@@ -131,8 +147,10 @@ def main():
 
     # first try to open mailing list
     print 'Loading list:', listname,
-    if lock: print '(locked)'
-    else: print '(unlocked)'
+    if lock:
+        print '(locked)'
+    else:
+        print '(unlocked)'
 
     m = MailList(listname, lock=lock)
 
@@ -150,4 +168,7 @@ def main():
         print 'Running %s.%s()' % (module, callable), '...'
         r = getattr(mod, callable)(m)
 
+
+
+sys.exitfunc = atexit
 main()
-- 
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