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/head: changeset 51 

Split up syncmessagesto() into individual components so we can control
the synchronization process with finer detail from above.
This commit is contained in:
jgoerzen 2002-06-25 05:47:09 +01:00
parent 132a38bfce
commit 8c607b2e71
1 changed files with 40 additions and 25 deletions
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65
head/offlineimap/folder/Base.py
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@ -114,21 +114,13 @@ class BaseFolder:
for uid in uidlist:
self.deletemessage(uid)
def syncmessagesto(self, dest, applyto = None):
"""Syncs messages in this folder to the destination.
If applyto is specified, it should be a list of folders (don't forget
to include dest!) to which all write actions should be applied.
It defaults to [dest] if not specified. It is important that
the UID generator be listed first in applyto; that is, the other
applyto ones should be the ones that "copy" the main action."""
if applyto == None:
applyto = [dest]
def syncmessagesto_neguid(self, dest, applyto):
"""Pass 1 of folder synchronization.
# Pass 1 -- Look for messages in self with a negative uid.
# These are messages in Maildirs that were not added by us.
# Try to add them to the dests, and once that succeeds, get the
# UID, add it to the others for real, add it to local for real,
# and delete the fake one.
Look for messages in self with a negative uid. These are messages in
Maildirs that were not added by us. Try to add them to the dests,
and once that succeeds, get the UID, add it to the others for real,
add it to local for real, and delete the fake one."""
for uid in self.getmessagelist().keys():
if uid >= 0:
@ -156,8 +148,11 @@ class BaseFolder:
# Did not find any server to take this message. Ignore.
pass
# Pass 2 -- Look for messages present in self but not in dest.
# If any, add them to dest.
def syncmessagesto_copy(self, dest, applyto):
"""Pass 2 of folder synchronization.
Look for messages present in self but not in dest. If any, add
them to dest."""
for uid in self.getmessagelist().keys():
if uid < 0: # Ignore messages that pass 1 missed.
@ -168,15 +163,17 @@ class BaseFolder:
flags = self.getmessageflags(uid)
for object in applyto:
newuid = object.savemessage(uid, message, flags)
if newuid != uid:
if newuid > 0 and newuid != uid:
# Change the local uid.
self.savemessage(newuid, message, flags)
self.deletemessage(uid)
uid = newuid
# Pass 3 -- Look for message present in dest but not in self.
# If any, delete them.
def syncmessagesto_delete(self, dest, applyto):
"""Pass 3 of folder synchronization.
Look for message present in dest but not in self.
If any, delete them."""
for uid in dest.getmessagelist().keys():
if uid < 0:
continue
@ -185,13 +182,11 @@ class BaseFolder:
for object in applyto:
object.deletemessage(uid)
# Now, the message lists should be identical wrt the uids present.
# (except for potential negative uids that couldn't be placed
# anywhere)
# Pass 4 -- Look for any flag identity issues -- set dest messages
# to have the same flags that we have here.
def syncmessagesto_flags(self, dest, applyto):
"""Pass 4 of folder synchronization.
Look for any flag matching issues -- set dest message to have the
same flags that we have."""
for uid in self.getmessagelist().keys():
if uid < 0: # Ignore messages missed by pass 1
continue
@ -210,4 +205,24 @@ class BaseFolder:
for object in applyto:
object.deletemessageflags(uid, delflags)
def syncmessagesto(self, dest, applyto = None):
"""Syncs messages in this folder to the destination.
If applyto is specified, it should be a list of folders (don't forget
to include dest!) to which all write actions should be applied.
It defaults to [dest] if not specified. It is important that
the UID generator be listed first in applyto; that is, the other
applyto ones should be the ones that "copy" the main action."""
if applyto == None:
applyto = [dest]
self.syncmessagesto_neguid(dest, applyto)
self.syncmessagesto_copy(dest, applyto)
self.syncmessagesto_delete(dest, applyto)
# Now, the message lists should be identical wrt the uids present.
# (except for potential negative uids that couldn't be placed
# anywhere)
self.syncmessagesto_flags(dest, applyto)