tobias/docker-offlineimap
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Make flags a set rather than a list

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As this is essentially what it is, a set of values. This allows as
to do set arithmetics to see, e.g. the intersection of 2 flag sets
rather than clunkily having to do:

for flag in newflags:
  if flag not in oldflags:
    oldflags.append(flag)

Also some more code documenting.

Signed-off-by: Sebastian Spaeth <Sebastian@SSpaeth.de>
Signed-off-by: Nicolas Sebrecht <nicolas.s-dev@laposte.net>
This commit is contained in:
Sebastian Spaeth
2011-08-16 12:16:46 +02:00
committed by Nicolas Sebrecht
parent 373e7cdbc1
commit 466ded04d9
7 changed files with 89 additions and 64 deletions
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39
offlineimap/imaputil.py
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@ -20,6 +20,11 @@ import re
import string
import types
from offlineimap.ui import getglobalui
try: # python 2.6 has set() built in
set
except NameError:
from sets import Set as set
quotere = re.compile('^("(?:[^"]|\\\\")*")')
def debug(*args):
@ -42,11 +47,21 @@ def dequote(string):
return string
def flagsplit(string):
"""Converts a string of IMAP flags to a list
:returns: E.g. '(\\Draft \\Deleted)' returns ['\\Draft','\\Deleted'].
(FLAGS (\\Seen Old) UID 4807) returns
['FLAGS,'(\\Seen Old)','UID', '4807']
"""
if string[0] != '(' or string[-1] != ')':
raise ValueError, "Passed string '%s' is not a flag list" % string
return imapsplit(string[1:-1])
def options2hash(list):
"""convert list [1,2,3,4,5,6] to {1:2, 3:4, 5:6}"""
# effectively this does dict(zip(l[::2],l[1::2])), however
# measurements seemed to have indicated that the manual variant is
# faster for mosly small lists.
retval = {}
counter = 0
while (counter < len(list)):
@ -55,8 +70,12 @@ def options2hash(list):
debug("options2hash returning:", retval)
return retval
def flags2hash(string):
return options2hash(flagsplit(string))
def flags2hash(flags):
"""Converts IMAP response string from eg IMAP4.fetch() to a hash.
E.g. '(FLAGS (\\Seen Old) UID 4807)' leads to
{'FLAGS': '(\\Seen Old)', 'UID': '4807'}"""
return options2hash(flagsplit(flags))
def imapsplit(imapstring):
"""Takes a string from an IMAP conversation and returns a list containing
@ -152,15 +171,16 @@ flagmap = [('\\Seen', 'S'),
('\\Draft', 'D')]
def flagsimap2maildir(flagstring):
retval = []
imapflaglist = [x.lower() for x in flagstring[1:-1].split()]
"""Convert string '(\\Draft \\Deleted)' into a flags set(DR)"""
retval = set()
imapflaglist = flagstring[1:-1].split()
for imapflag, maildirflag in flagmap:
if imapflag.lower() in imapflaglist:
retval.append(maildirflag)
retval.sort()
if imapflag in imapflaglist:
retval.add(maildirflag)
return retval
def flagsmaildir2imap(maildirflaglist):
"""Convert set of flags ([DR]) into a string '(\\Draft \\Deleted)'"""
retval = []
for imapflag, maildirflag in flagmap:
if maildirflag in maildirflaglist:
@ -198,8 +218,3 @@ def listjoin(list):
retval.append(getlist(start, end))
return ",".join(retval)