ocebuild.parsers.types

Type parsing helper functions.

Module Contents

Functions

encode_data(→ bytes)	Encodes a base64 or hexadecimal string to a binary representation.
decode_data(→ str)	Decodes a binary representation to a base64 string.

Attributes

RE_VALID_BASE64	Regular expression to match a valid base64 string.
RE_VALID_HEX	Regular expression to match a valid hexadecimal string.

ocebuild.parsers.types.RE_VALID_BASE64 = '^([a-zA-Z0-9+/]{4})*([a-zA-Z0-9+/]{3}=|[a-zA-Z0-9+/]{2}==)?$'

Regular expression to match a valid base64 string.

ocebuild.parsers.types.RE_VALID_HEX = '^([a-fA-F0-9]{2})*$'

Regular expression to match a valid hexadecimal string.

ocebuild.parsers.types.encode_data(value: str) → bytes

Encodes a base64 or hexadecimal string to a binary representation.

Parameters:

value – The base64 or hexadecimal string to encode.

Raises:

ValueError – If the string is not a valid base64 or hexadecimal string.

Returns:

A binary representation of the string.

Examples

>>> encode_data('<01 00 00 00>')
b'\x01\x00\x00\x00'
>>> encode_data('01000000')
b'\x01\x00\x00\x00'
>>> encode_data('AQAAAA==')
b'\x01\x00\x00\x00'

ocebuild.parsers.types.decode_data(value: bytes, enc: str = 'base64') → str

Decodes a binary representation to a base64 string.

Parameters:

• value – The binary representation to decode.

• enc – The encoding format to return. Valid values are ‘base64’ and ‘hex’.

Raises:

ValueError – If the format is not a valid format.

Returns:

A base64 or hex string representation of the binary data.