| """Various utilities (logger, time benchmark, args dump, numerical and stats info)""" | |
| def is_base64(sb): | |
| import base64 | |
| try: | |
| if isinstance(sb, str): | |
| # If there's any unicode here, an exception will be thrown and the function will return false | |
| sb_bytes = bytes(sb, 'ascii') | |
| elif isinstance(sb, bytes): | |
| sb_bytes = sb | |
| else: | |
| raise ValueError("Argument must be string or bytes") | |
| return base64.b64encode(base64.b64decode(sb_bytes, validate=True)) == sb_bytes | |
| except ValueError: | |
| return False | |
| def base64_decode(s): | |
| import base64 | |
| if isinstance(s, str) and is_base64(s): | |
| return base64.b64decode(s, validate=True).decode("utf-8") | |
| return s | |