docstr: UUEncode (Unix to Unix Encoding) is a symmetric encryption
  based on conversion of binary data (split into 6-bit blocks) into ASCII characters.
  
  This function decodes the input string 'ctext' if it has been encoded using 'uuencoder'
  It will return None otherwise
docstr_tok: ["UUEncode","(","Unix","to","Unix","Encoding",")","is","a","symmetric","encryption","based","on","conversion","of","binary","data","(","split","into","6-bit","blocks",")","into","ASCII","characters",".","This","function","decodes","the","input","string","'ctext","'","if","it","has","been","encoded","using","'uuencoder'","It","will","return","None","otherwise"]
code: def decode(self, ctext: T) -> Optional[U]:
      """
      UUEncode (Unix to Unix Encoding) is a symmetric encryption
      based on conversion of binary data (split into 6-bit blocks) into ASCII characters.
  
      This function decodes the input string 'ctext' if it has been encoded using 'uuencoder'
      It will return None otherwise
      """
      logging.debug("Attempting UUencode")
      result = ""
      try:
          # UUencoded messages may begin with prefix "begin" and end with suffix "end"
          # In that case, we use the codecs module in Python
          ctext_strip = ctext.strip()
          if ctext_strip.startswith("begin") and ctext_strip.endswith(
              "end"
          ):
              result = decode(bytes(ctext, "utf-8"), "uu").decode()
          else:
              # If there isn't a "being" prefix and "end" suffix, we use the binascii module instead
              # It is possible that the ctext has multiple lines, so convert each line and append
              ctext_split = list(filter(None, ctext.splitlines()))
              for _, value in enumerate(ctext_split):
                  result += a2b_uu(value).decode("utf-8")
          logging.info(f"UUencode successful, returning '{result}'")
          return result
      except Exception:
          logging.debug("Failed to decode UUencode")
          return None
  
file_path: Ciphey/ciphey/basemods/Decoders/uuencode.py
imports: from binascii import a2b_uu
  from codecs import decode
  from typing import Dict, Optional
  import logging
  from rich.logging import RichHandler
  from ciphey.iface import Config, Decoder, ParamSpec, T, U, registry
label_desc: Use image node_id 1 for calling the Uuencode obj's underlying member method code with example usage: obj.decode(ctext) and returns: result, None