Source code for b2sdk.utils.range_

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#
# File: b2sdk/utils/range_.py
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# Copyright 2020 Backblaze Inc. All Rights Reserved.
#
# License https://www.backblaze.com/using_b2_code.html
#
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[docs]class Range: """ 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
@classmethod def from_header(cls, raw_range_header): """ Factory method which returns an object constructed from Range http header. raw_range_header example: 'bytes=0-11' """ offsets = tuple( int(i) for i in raw_range_header.replace('bytes', '').strip('= ').split('-') ) return cls(*offsets) def size(self): return self.end - self.start + 1 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) def as_tuple(self): return self.start, self.end def __repr__(self): return '%s(%d, %d)' % (self.__class__.__name__, self.start, self.end) def __eq__(self, other): return self.start == other.start and self.end == other.end