Initial checkin of media test matrix class, which will be used for media perf test later.

third_party/APScheduler/apscheduler/util.py

Index: third_party/APScheduler/apscheduler/util.py
diff --git a/third_party/APScheduler/apscheduler/util.py b/third_party/APScheduler/apscheduler/util.py
new file mode 100644
index 0000000000000000000000000000000000000000..7dfc7676d7386f7ae0640c95e2c461f279a08639
--- /dev/null
+++ b/third_party/APScheduler/apscheduler/util.py
@@ -0,0 +1,91 @@
+"""
+This module contains several handy functions primarily meant for internal use.
+"""
+
+from datetime import date, datetime, timedelta
+from time import mktime
+
+__all__ = ('asint', 'asbool', 'convert_to_datetime', 'timedelta_seconds',
+           'time_difference', 'datetime_ceil')
+
+
+def asint(text):
+    """
+    Safely converts a string to an integer, returning None if the string
+    is None.
+
+    :type text: str
+    :rtype: int
+    """
+    if text is not None:
+        return int(text)
+
+
+def asbool(obj):
+    """
+    Interprets an object as a boolean value.
+
+    :rtype: bool
+    """
+    if isinstance(obj, str):
+        obj = obj.strip().lower()
+        if obj in ('true', 'yes', 'on', 'y', 't', '1'):
+            return True
+        if obj in ('false', 'no', 'off', 'n', 'f', '0'):
+            return False
+        raise ValueError('Unable to interpret value "%s" as boolean' % obj)
+    return bool(obj)
+
+
+def convert_to_datetime(dateval):
+    """
+    Converts a date object to a datetime object.
+    If an actual datetime object is passed, it is returned unmodified.
+
+    :type dateval: date
+    :rtype: datetime
+    """
+    if isinstance(dateval, datetime):
+        return dateval
+    elif isinstance(dateval, date):
+        return datetime.fromordinal(dateval.toordinal())
+    raise TypeError('Expected date, got %s instead' % type(dateval))
+
+
+def timedelta_seconds(delta):
+    """
+    Converts the given timedelta to seconds.
+
+    :type delta: timedelta
+    :rtype: float
+    """
+    return delta.days * 24 * 60 * 60 + delta.seconds + \
+        delta.microseconds / 1000000.0
+
+
+def time_difference(date1, date2):
+    """
+    Returns the time difference in seconds between the given two
+    datetime objects. The difference is calculated as: date1 - date2.
+
+    :param date1: the later datetime
+    :type date1: datetime
+    :param date2: the earlier datetime
+    :type date2: datetime
+    :rtype: float
+    """
+    later = mktime(date1.timetuple())
+    earlier = mktime(date2.timetuple())
+    return int(later - earlier)
+
+
+def datetime_ceil(dateval):
+    """
+    Rounds the given datetime object upwards.
+
+    :type dateval: datetime
+    """
+    if dateval.microsecond > 0:
+        return dateval + timedelta(seconds=1,
+                                   microseconds=-dateval.microsecond)
+    return dateval