mirror of
https://github.com/Mikaela/Limnoria.git
synced 2024-11-08 12:09:22 +01:00
88 lines
2.5 KiB
Python
88 lines
2.5 KiB
Python
"""
|
|
Copyright (c) 2003-2005 Gustavo Niemeyer <gustavo@niemeyer.net>
|
|
|
|
This module offers extensions to the standard python 2.3+
|
|
datetime module.
|
|
"""
|
|
from dateutil.tz import tzfile
|
|
from tarfile import TarFile
|
|
import os
|
|
|
|
__author__ = "Gustavo Niemeyer <gustavo@niemeyer.net>"
|
|
__license__ = "PSF License"
|
|
|
|
__all__ = ["setcachesize", "gettz", "rebuild"]
|
|
|
|
CACHE = []
|
|
CACHESIZE = 10
|
|
|
|
class tzfile(tzfile):
|
|
def __reduce__(self):
|
|
return (gettz, (self._filename,))
|
|
|
|
def getzoneinfofile():
|
|
filenames = os.listdir(os.path.join(os.path.dirname(__file__)))
|
|
filenames.sort()
|
|
filenames.reverse()
|
|
for entry in filenames:
|
|
if entry.startswith("zoneinfo") and ".tar." in entry:
|
|
return os.path.join(os.path.dirname(__file__), entry)
|
|
return None
|
|
|
|
ZONEINFOFILE = getzoneinfofile()
|
|
|
|
del getzoneinfofile
|
|
|
|
def setcachesize(size):
|
|
global CACHESIZE, CACHE
|
|
CACHESIZE = size
|
|
del CACHE[size:]
|
|
|
|
def gettz(name):
|
|
tzinfo = None
|
|
if ZONEINFOFILE:
|
|
for cachedname, tzinfo in CACHE:
|
|
if cachedname == name:
|
|
break
|
|
else:
|
|
tf = TarFile.open(ZONEINFOFILE)
|
|
try:
|
|
zonefile = tf.extractfile(name)
|
|
except KeyError:
|
|
tzinfo = None
|
|
else:
|
|
tzinfo = tzfile(zonefile)
|
|
tf.close()
|
|
CACHE.insert(0, (name, tzinfo))
|
|
del CACHE[CACHESIZE:]
|
|
return tzinfo
|
|
|
|
def rebuild(filename, tag=None, format="gz"):
|
|
import tempfile, shutil
|
|
tmpdir = tempfile.mkdtemp()
|
|
zonedir = os.path.join(tmpdir, "zoneinfo")
|
|
moduledir = os.path.dirname(__file__)
|
|
if tag: tag = "-"+tag
|
|
targetname = "zoneinfo%s.tar.%s" % (tag, format)
|
|
try:
|
|
tf = TarFile.open(filename)
|
|
for name in tf.getnames():
|
|
if not (name.endswith(".sh") or
|
|
name.endswith(".tab") or
|
|
name == "leapseconds"):
|
|
tf.extract(name, tmpdir)
|
|
filepath = os.path.join(tmpdir, name)
|
|
os.system("zic -d %s %s" % (zonedir, filepath))
|
|
tf.close()
|
|
target = os.path.join(moduledir, targetname)
|
|
for entry in os.listdir(moduledir):
|
|
if entry.startswith("zoneinfo") and ".tar." in entry:
|
|
os.unlink(os.path.join(moduledir, entry))
|
|
tf = TarFile.open(target, "w:%s" % format)
|
|
for entry in os.listdir(zonedir):
|
|
entrypath = os.path.join(zonedir, entry)
|
|
tf.add(entrypath, entry)
|
|
tf.close()
|
|
finally:
|
|
shutil.rmtree(tmpdir)
|