calculate_padding

asdf.util.calculate_padding(content_size, pad_blocks, block_size)[source]

Calculates the amount of extra space to add to a block given the user’s request for the amount of extra space. Care is given so that the total of size of the block with padding is evenly divisible by block size.

Parameters

content_size : int

The size of the actual content

pad_blocks : float or bool

If False, add no padding (always return 0). If True, add a default amount of padding of 10% If a float, it is a factor to multiple content_size by to get the new total size.

block_size : int

The filesystem block size to use.

Returns

nbytes : int

The number of extra bytes to add for padding.