Class: Whisper::Mbox

Inherits:
Object
  • Object
show all
Includes:
Loggy
Defined in:
lib/whisper/mbox.rb

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(fn, start_offset) ⇒ Mbox

Returns a new instance of Mbox.



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# File 'lib/whisper/mbox.rb', line 22

def initialize fn, start_offset
  @fn = fn
  @offset = start_offset
  @mutex = Mutex.new
end

Instance Attribute Details

#offset ⇒ Object (readonly)

Returns the value of attribute offset.



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# File 'lib/whisper/mbox.rb', line 20

def offset
  @offset
end

Instance Method Details

#eof? ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/whisper/mbox.rb', line 28

def eof?
  @mutex.synchronize { @offset >= File.size(@fn) }
end

#next_message ⇒ Object 



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# File 'lib/whisper/mbox.rb', line 32

def next_message
  m = @mutex.synchronize do
    debug "reading #{@fn}@#{@offset}..."
    with_filehandle do |f|
      string = ""
      l = f.gets
      string << l until f.eof? || is_break_line?(l = f.gets)
      debug "read #{string.size} bytes"
      return nil if string.empty?
      @offset += string.size
      begin
        RMail::Parser.read string
      rescue ArgumentError # sigh. invalid utf throws this completely generic exception
        nil
      end
    end
  end

  return if m.nil? # hit EOF

  headers = {
    "message-id" => m.header["message-id"],
    "in-reply-to" => m.header["in-reply-to"],
    "date" => m.header["date"],
    "from" => Rfc2047.decode_to("utf-8", m.header["from"]),
  }

  text_part = find_text_part m
  debug "text part of message has size #{text_part.body.size}: #{text_part.body[0..50].inspect}..."
  body = if text_part
    x = text_part.decode
    x = Iconv.easy_decode("utf-8", text_part.charset, x) if text_part.charset
    munge_body x
  else
    "_[This message contains no text/plain part. Bad commenter, no cookie! --ed.]_\n"
  end

  [body, headers]
end