add gem mime?

[Nakilon]

I have to read the GMail via IMAP. I use the gem "mail" but it returns the mail message like this:

(byebug) msg.body.decoded
"------=_Part_37167_26340950.1174009077912\nContent-Type: text/plain; charset=KOI8-R; format=flowed\nContent-Transfer-Encoding: base64\nContent-Disposition: inline\n\n99PU0s/Fzs7Zyi...

The only thing that might help me to decode the "format=flowed" I've found is https://www.rubydoc.info/gems/mime/0.4.0 with the class MIME::ContentFormats::TextFlowed

P.S.: oh, anyway, while writing this post discovered this part of it ..(

    #
    # Decode flowed plain +text+.
    #
    def self.decode(text)
      raise NotImplementedError
    end

UPD: maybe it's not about "flowed" but about some sort of multipart... haven't figure it out how to parse it yet.

[adam12]

I've added mime versions 0.4.0, 0.4.1, 0.4.2, 0.4.3, 0.4.4.

[Nakilon]

Just in case anyone stumble upon this from google.
I reinvented the wheel of parsing that stuff:

      s = msg.body.decoded
      sc = StringScanner.new s
      fail sc.peek(100).inspect unless sc.scan(/\n(----(--)?==?_[a-z].+)\n/i)
      delimeter = sc[1]

      h = {}
      loop do
        fail sc.peek(100).inspect unless sc.scan(/\n?Content-Type: text\/([a-z]+);\n charset=([A-Z0-9-]+)/)
        fail if h[type = sc[1]]
        charset = sc[2]
        sc.skip_until /\n\n/
        h[type] = Base64.decode64(sc.scan_until(Regexp.new delimeter)[0..-delimeter.size]).force_encoding(charset).encode("utf-8")
        break if "--\n" == sc.peek(10)
      end
      fail unless %w{ plain html } == h.keys

to then accidentally find that it is already returning exact same "plain" string from just

    msg.text_part.decoded

i.e. it is the flaw of the "mail" gem docs that they mention only msg.decoded but not msg.text_part.decoded.