Finish up TimeDelta_or_None

MySQLdb/MySQLdb/pytimes.py

@@ -0,0 +1,57 @@
+"""Use Python datetime module to handle date and time columns."""
+
+# datetime is only in Python 2.3 or newer, so it is safe to use
+# string methods. However, have to use apply(func, args) instead
+# of func(*args) because 1.5.2 will reject the syntax.
+
+from time import localtime
+from datetime import date, datetime, time, timedelta
+
+Date = date
+Time = time
+Timestamp = datetime
+
+DateTimeDeltaType = type(timedelta)
+DateTimeType = type(datetime)
+
+def DateFromTicks(ticks):
+    """Convert UNIX ticks into a date instance."""
+    return apply(date, localtime(ticks)[:3])
+
+def TimeFromTicks(ticks):
+    """Convert UNIX ticks into a time instance."""
+    return apply(time, localtime(ticks)[3:6])
+
+def TimestampFromTicks(ticks):
+    """Convert UNIX ticks into a datetime instance."""
+    return apply(datetime, localtime(ticks)[:6])
+
+format_TIME = format_TIMESTAMP = format_DATE = str
+
+def DateTime_or_None(s):
+    if ' ' in s:
+        sep = ' '
+    elif 'T' in s:
+        sep = 'T'
+    else:
+        return None
+
+    try:
+        d, t = s.split(sep, 1)
+        return apply(datetime, tuple(d.split('-')+t.split(':')))
+    except:
+        return None
+
+def TimeDelta_or_None(s):
+    try:
+        h, m, s = map(float, s.split(':'))
+        if h < 0:
+            return -timedelta(hours=h, minutes=m, seconds=s)
+        else:
+            return timedelta(hours=h, minutes=m, seconds=s)
+    except:
+        return None
+
+def Date_or_None(s):
+    try: return apply(date, tuple(s.split('-',2)))
+    except: return None