Module nari.util.byte

Byte-related utility functions

"""Byte-related utility functions"""


def hexstr_to_int(string: str, pad: bool = True) -> int:
    """Converts a hexstring to a byte; items less than 4 characters 'wide' are padded"""
    if pad:
        return int(string.zfill(4), 16)
    return int(string, 16)


def hexstr_to_bytes(param: str,  byte_size: int = 4, reverse: bool = False) -> bytes:
    """Helper function to convert strings into bytes. Also changes the byte order."""
    param_expanded = param.zfill(byte_size * 2)
    bytes_arr = bytearray.fromhex(param_expanded)

    if reverse:
        bytes_arr.reverse()  # switch the endianness

    return bytes(bytes_arr)

Functions

def hexstr_to_bytes(param: str, byte_size: int = 4, reverse: bool = False) ‑> bytes

Helper function to convert strings into bytes. Also changes the byte order.

Expand source code

def hexstr_to_bytes(param: str,  byte_size: int = 4, reverse: bool = False) -> bytes:
    """Helper function to convert strings into bytes. Also changes the byte order."""
    param_expanded = param.zfill(byte_size * 2)
    bytes_arr = bytearray.fromhex(param_expanded)

    if reverse:
        bytes_arr.reverse()  # switch the endianness

    return bytes(bytes_arr)

def hexstr_to_int(string: str, pad: bool = True) ‑> int

Converts a hexstring to a byte; items less than 4 characters 'wide' are padded

Expand source code

def hexstr_to_int(string: str, pad: bool = True) -> int:
    """Converts a hexstring to a byte; items less than 4 characters 'wide' are padded"""
    if pad:
        return int(string.zfill(4), 16)
    return int(string, 16)