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# Mailbox name generator
# Copyright (C) 2002-2016 John Goerzen & contributors
#
# This program is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation; either version 2 of the License, or
# (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program; if not, write to the Free Software
# Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
import re # For folderfilter.
import json
from threading import Lock
from os import listdir, makedirs, path, unlink
from sys import exc_info
from configparser import NoSectionError
_mbLock = Lock()
_mbnames = None
# Called at sync time for each folder.
def add(accountname, folder_root, foldername):
global _mbnames
if _mbnames.is_enabled() is not True:
return
with _mbLock:
_mbnames.addAccountFolder(accountname, folder_root, foldername)
# Called once.
def init(conf, ui, dry_run):
global _mbnames
if _mbnames is None:
_mbnames = _Mbnames(conf, ui, dry_run)
# Called once.
def prune(accounts):
global _mbnames
if _mbnames.is_enabled() is True:
_mbnames.prune(accounts)
else:
_mbnames.pruneAll()
# Called once.
def write():
"""Write the mbnames file."""
global _mbnames
if _mbnames.is_enabled() is not True:
return
if _mbnames.get_incremental() is not True:
_mbnames.write()
# Called as soon as all the folders are synced for the account.
def writeIntermediateFile(accountname):
"""Write intermediate mbnames file."""
global _mbnames
if _mbnames.is_enabled() is not True:
return
_mbnames.writeIntermediateFile(accountname)
if _mbnames.get_incremental() is True:
_mbnames.write()
class _IntermediateMbnames():
"""mbnames data for one account."""
def __init__(self, accountname, folder_root, mbnamesdir, folderfilter,
dry_run, ui):
self.ui = ui
self._foldernames = []
self._accountname = accountname
self._folder_root = folder_root
self._folderfilter = folderfilter
self._path = path.join(mbnamesdir, "%s.json" % accountname)
self._dryrun = dry_run
def add(self, foldername):
if foldername not in self._foldernames:
self._foldernames.append(foldername)
def get_folder_root(self):
return self._folder_root
def write(self):
"""Write intermediate mbnames file in JSON format."""
itemlist = []
for foldername in self._foldernames:
if self._folderfilter(self._accountname, foldername):
itemlist.append({
'accountname': self._accountname,
'foldername': foldername,
'localfolders': self._folder_root,
})
if self._dryrun:
self.ui.info("mbnames would write %s" % self._path)
else:
with open(
self._path, "w", encoding='utf-8') as intermediateFD:
json.dump(itemlist, intermediateFD)
class _Mbnames:
def __init__(self, config, ui, dry_run):
self._config = config
self.ui = ui
self._dryrun = dry_run
self._enabled = None
# Keys: accountname, values: _IntermediateMbnames instance.
self._intermediates = {}
self._incremental = None
self._mbnamesdir = None
self._path = None
self._folderfilter = lambda accountname, foldername: True
self._func_sortkey = lambda d: (d['accountname'], d['foldername'])
localeval = config.getlocaleval()
mbnamesdir = path.join(config.getmetadatadir(), "mbnames")
self._peritem = None
self._header = None
self._sep = None
self._footer = None
try:
if not self._dryrun:
makedirs(mbnamesdir)
except OSError:
pass
self._mbnamesdir = mbnamesdir
try:
self._enabled = self._config.getdefaultboolean(
"mbnames", "enabled", False)
self._peritem = self._config.get("mbnames", "peritem", raw=1)
self._header = localeval.eval(config.get("mbnames", "header"))
self._sep = localeval.eval(config.get("mbnames", "sep"))
self._footer = localeval.eval(config.get("mbnames", "footer"))
xforms = [path.expanduser, path.expandvars]
self._path = config.apply_xforms(
config.get("mbnames", "filename"), xforms)
if self._config.has_option("mbnames", "sort_keyfunc"):
self._func_sortkey = localeval.eval(
self._config.get("mbnames", "sort_keyfunc"), {'re': re})
if self._config.has_option("mbnames", "folderfilter"):
self._folderfilter = localeval.eval(
self._config.get("mbnames", "folderfilter"), {'re': re})
except NoSectionError:
pass
def _iterIntermediateFiles(self):
for foo in listdir(self._mbnamesdir):
foo = path.join(self._mbnamesdir, foo)
if path.isfile(foo) and foo[-5:] == '.json':
yield foo
def _removeIntermediateFile(self, path):
if self._dryrun:
self.ui.info("mbnames would remove %s" % path)
else:
unlink(path)
self.ui.info("removed %s" % path)
def addAccountFolder(self, accountname, folder_root, foldername):
"""Add foldername entry for an account."""
if accountname not in self._intermediates:
self._intermediates[accountname] = _IntermediateMbnames(
accountname,
folder_root,
self._mbnamesdir,
self._folderfilter,
self._dryrun,
self.ui,
)
self._intermediates[accountname].add(foldername)
def get_incremental(self):
if self._incremental is None:
self._incremental = self._config.getdefaultboolean(
"mbnames", "incremental", False)
return self._incremental
def is_enabled(self):
return self._enabled
def prune(self, accounts):
removals = False
for intermediateFile in self._iterIntermediateFiles():
filename = path.basename(intermediateFile)
accountname = filename[:-5]
if accountname not in accounts:
removals = True
self._removeIntermediateFile(intermediateFile)
if removals is False:
self.ui.info("no cache file to remove")
def pruneAll(self):
for intermediateFile in self._iterIntermediateFiles():
self._removeIntermediateFile(intermediateFile)
def write(self):
itemlist = []
for intermediateFile in self._iterIntermediateFiles():
try:
with open(
intermediateFile, 'r', encoding="utf-8") as intermediateFD:
for item in json.load(intermediateFD):
itemlist.append(item)
except (OSError, IOError) as e:
self.ui.error("could not read intermediate mbnames file '%s':"
"%s" % (intermediateFile, str(e)))
except Exception as e:
self.ui.error(
e,
exc_info()[2],
("intermediate mbnames file %s not properly read" %
intermediateFile)
)
itemlist.sort(key=self._func_sortkey)
itemlist = [self._peritem % d for d in itemlist]
if self._dryrun:
self.ui.info("mbnames would write %s" % self._path)
else:
try:
with open(
self._path, 'w', encoding='utf-8') as mbnamesFile:
mbnamesFile.write(self._header)
mbnamesFile.write(self._sep.join(itemlist))
mbnamesFile.write(self._footer)
except (OSError, IOError) as e:
self.ui.error(
e,
exc_info()[2],
"mbnames file %s not properly written" % self._path
)
def writeIntermediateFile(self, accountname):
try:
self._intermediates[accountname].write()
except (OSError, IOError) as e:
self.ui.error(
e,
exc_info()[2],
"intermediate mbnames file %s not properly written" % self._path
)
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