void-packages/srcpkgs/python-dateutil/patches/use-system-zoneinfo.patch

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diff -up dateutil/zoneinfo/__init__.py\~ dateutil/zoneinfo/__init__.py
--- dateutil/zoneinfo/__init__.py~ 2005-12-22 19:13:50.000000000 +0100
+++ dateutil/zoneinfo/__init__.py 2011-08-17 15:24:29.019214748 +0200
@@ -15,6 +15,7 @@ __all__ = ["setcachesize", "gettz", "reb
CACHE = []
CACHESIZE = 10
+USE_SYSTEM_ZONEINFO = True # XXX configure at build time
class tzfile(tzfile):
def __reduce__(self):
@@ -29,7 +30,8 @@ def getzoneinfofile():
return os.path.join(os.path.dirname(__file__), entry)
return None
-ZONEINFOFILE = getzoneinfofile()
+ZONEINFOFILE = getzoneinfofile() if USE_SYSTEM_ZONEINFO else None
+ZONEINFODIR = (os.getenv("TZDIR") or "/usr/share/zoneinfo").rstrip(os.sep)
del getzoneinfofile
@@ -39,22 +40,37 @@ def setcachesize(size):
del CACHE[size:]
def gettz(name):
- tzinfo = None
- if ZONEINFOFILE:
- for cachedname, tzinfo in CACHE:
- if cachedname == name:
- break
+ for cachedname, tzinfo in CACHE:
+ if cachedname == name:
+ return tzinfo
+
+ name_parts = name.lstrip('/').split('/')
+ for part in name_parts:
+ if part == os.path.pardir or os.path.sep in part:
+ raise ValueError('Bad path segment: %r' % part)
+ filename = os.path.join(ZONEINFODIR, *name_parts)
+ try:
+ zonefile = open(filename, "rb")
+ except:
+ tzinfo = None
+ else:
+ tzinfo = tzfile(zonefile)
+ zonefile.close()
+
+ if tzinfo is None and ZONEINFOFILE:
+ tf = TarFile.open(ZONEINFOFILE)
+ try:
+ zonefile = tf.extractfile(name)
+ except KeyError:
+ tzinfo = None
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:]
+ tzinfo = tzfile(zonefile)
+ tf.close()
+
+ if tzinfo is not None:
+ CACHE.insert(0, (name, tzinfo))
+ del CACHE[CACHESIZE:]
+
return tzinfo
def rebuild(filename, tag=None, format="gz"):