mybin

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get_email_header (754B)

      1 #!/usr/bin/env python3
      2 # adapted from https://stackoverflow.com/a/39464990/414272
      3 
      4 from email.parser import BytesParser
      5 from email.header import Header, decode_header
      6 from email.errors import HeaderParseError
      7 from sys import argv, stdin
      8 
      9 header = argv[1]
     10 
     11 # TODO: for some reason this does not work when piping
     12 message = BytesParser().parse(stdin.buffer)
     13 try:
     14     subj = ''.join([
     15         frag.decode(enc if enc else "utf-8")
     16             if isinstance(frag, bytes) else frag
     17                 for frag, enc in decode_header(message[header])])
     18 except (HeaderParseError, UnicodeDecodeError): # maybe warn about error?
     19     subj = message['subject'] 
     20     subj = subj.decode("utf-8") if isinstance(subj, bytes) else subj
     21 print(subj.strip().replace('\n', ''))
     22 
     23