'''
A few utilities for dealing with intervals.
'''
import synapse.lib.time as s_time
[docs]def fold(*vals):
'''
Initialize a new (min,max) tuple interval from values.
Args:
*vals ([int,...]): A list of values (or Nones)
Returns:
((int,int)): A (min,max) interval tuple or None
'''
vals = [v for v in vals if v is not None]
if not vals:
return None
return min(vals), max(vals)
[docs]def overlap(ival0, ival1):
'''
Determine if two interval tuples have overlap.
Args:
ival0 ((int,int)): An interval tuple
ival1 ((int,int)); An interval tuple
Returns:
(bool): True if the intervals overlap, otherwise False
'''
min0, max0 = ival0
min1, max1 = ival1
return max(0, min(max0, max1) - max(min0, min1)) > 0
[docs]def parsetime(text):
'''
Parse an interval time string and return a (min,max) tuple.
Args:
text (str): A time interval string
Returns:
((int,int)): A epoch millis epoch time string
'''
mins, maxs = text.split('-', 1)
minv = s_time.parse(mins)
maxv = s_time.parse(maxs, base=minv)
return minv, maxv