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##############################################################################
# Copyright (c) 2016 Huawei Technologies Co.,Ltd and others.
#
# All rights reserved. This program and the accompanying materials
# are made available under the terms of the Apache License, Version 2.0
# which accompanies this distribution, and is available at
# http://www.apache.org/licenses/LICENSE-2.0
##############################################################################
import datetime
import re
import sys
def format_datetime(date_time):
"""Generate string from datetime object."""
return date_time.strftime("%Y-%m-%d %H:%M:%S")
def parse_time_interval(time_interval_str):
"""parse string of time interval to time interval.
supported time interval unit: ['d', 'w', 'h', 'm', 's']
Examples:
time_interval_str: '3d 2h' time interval to 3 days and 2 hours.
"""
if not time_interval_str:
return 0
time_interval_tuple = [
time_interval_element
for time_interval_element in time_interval_str.split(' ')
if time_interval_element
]
time_interval_dict = {}
time_interval_unit_mapping = {
'd': 'days',
'w': 'weeks',
'h': 'hours',
'm': 'minutes',
's': 'seconds'
}
for time_interval_element in time_interval_tuple:
mat = re.match(r'^([+-]?\d+)(w|d|h|m|s).*', time_interval_element)
if not mat:
continue
time_interval_value = int(mat.group(1))
time_interval_unit = time_interval_unit_mapping[mat.group(2)]
time_interval_dict[time_interval_unit] = (
time_interval_dict.get(time_interval_unit, 0) + time_interval_value
)
time_interval = datetime.timedelta(**time_interval_dict)
if sys.version_info[0:2] > (2, 6):
return time_interval.total_seconds()
else:
return (
time_interval.microseconds + (
time_interval.seconds + time_interval.days * 24 * 3600
) * 1e6
) / 1e6
def pretty_print(*contents):
"""pretty print contents."""
if len(contents) == 0:
print ""
else:
print "\n".join(content for content in contents)
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