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"""Various utilities (logger, time benchmark, args dump, numerical and stats info)"""
def _prepare_base64_input(sb):
if isinstance(sb, str):
# If there's any unicode here, an exception will be thrown and the function will return false
return bytes(sb, 'ascii')
elif isinstance(sb, bytes):
return sb
raise ValueError("Argument must be string or bytes")
def _is_base64(sb: str or bytes):
import base64
try:
sb_bytes = _prepare_base64_input(sb)
return base64.b64encode(base64.b64decode(sb_bytes, validate=True)) == sb_bytes
except ValueError:
return False
def base64_decode(s):
"""
Decode base64 strings
Args:
s: input string
Returns:
decoded string
"""
import base64
if isinstance(s, str) and _is_base64(s):
return base64.b64decode(s, validate=True).decode("utf-8")
return s
def base64_encode(sb: str or bytes) -> bytes:
"""
Encode input strings or bytes as base64
Args:
sb: input string or bytes
Returns:
base64 encoded bytes
"""
import base64
sb_bytes = _prepare_base64_input(sb)
return base64.b64encode(sb_bytes)
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