Fix DatetimeTextRecord parse() and to_bytes()

sschmieta · sschmieta · commit ecbabce7047b · 2014-12-19T14:20:39.000-05:00
The implementation was assuming big-endian ordering of the tz and value bits
but it should be little-endian.
diff --git a/wcf/records/text.py b/wcf/records/text.py
@@ -423,7 +423,7 @@ def to_bytes(self):
         """
         bytes  = super(DatetimeTextRecord, self).to_bytes()
         bytes += struct.pack('<Q',
-                (self.tz & 3) | (self.value & 0x1FFFFFFFFFFFFFFF) << 2)
+                ((self.tz & 3) << 62) | (self.value & 0x3FFFFFFFFFFFFFFF))
 
         return bytes
 
@@ -439,8 +439,8 @@ def parse(cls, fp):
         '2006-05-17T00:00:00'
         """
         data = struct.unpack('<Q', fp.read(8))[0]
-        tz = data & 3
-        value = data >> 2
+        tz = data >> 62
+        value = data & 0x3FFFFFFFFFFFFFFF
 
         return DatetimeTextRecord(value, tz)
 
