######################################################################
#
# File: b2sdk/transfer/inbound/downloader/range.py
#
# Copyright 2020 Backblaze Inc. All Rights Reserved.
#
# License https://www.backblaze.com/using_b2_code.html
#
######################################################################
[docs]class Range(object):
"""
HTTP ranges use an *inclusive* index at the end.
"""
[docs] def __init__(self, start, end):
assert 0 <= start <= end
self.start = start
self.end = end
[docs] def size(self):
return self.end - self.start + 1
[docs] def subrange(self, sub_start, sub_end):
"""
Return a range that is part of this range.
:param sub_start: index relative to the start of this range.
:param sub_end: (Inclusive!) index relative to the start of this range.
:return: a new Range
"""
assert 0 <= sub_start <= sub_end < self.size()
return self.__class__(self.start + sub_start, self.start + sub_end)
[docs] def as_tuple(self):
return self.start, self.end
def __repr__(self):
return '%s(%d, %d)' % (self.__class__.__name__, self.start, self.end)