@spec pad_binary(binary(), pos_integer(), non_neg_integer()) :: binary()

Pads a binary with zero bytes to reach the specified length.

If min_length is given, padding is only applied when the binary size is at least min_length. Otherwise, the binary is returned as-is.

Parameters

• binary - the binary to pad
• length - target size after padding
• min_length - minimum size required to trigger padding (default: 0)

Examples

iex> ArtNet.Misc.pad_binary(<<1, 2>>, 5)
<<1, 2, 0, 0, 0>>

iex> ArtNet.Misc.pad_binary(<<1, 2, 3, 4, 5>>, 5)
<<1, 2, 3, 4, 5>>

iex> ArtNet.Misc.pad_binary(<<1>>, 5, 2)
<<1>>