Module: Vmail::ShowingMessage

Included in:
ImapClient
Defined in:
lib/vmail/showing_message.rb

Instance Method Summary collapse

Instance Method Details

#cached_full_message?(message_id) ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/vmail/showing_message.rb', line 13

def cached_full_message?(message_id)
  m = Message[message_id]
  log "- found message #{message_id}"
  log "- message has plaintext? #{!m.plaintext.nil?}"
  m && !m.plaintext.nil? && m
end

#current_mail ⇒ Object 



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# File 'lib/vmail/showing_message.rb', line 9

def current_mail
  (c = current_message) && Mail.new(c.rfc822)
end

#current_message ⇒ Object 



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# File 'lib/vmail/showing_message.rb', line 4

def current_message
  return unless @cur_message_id
  Message[@cur_message_id]
end

#fetch_and_cache(message_id) ⇒ Object 



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# File 'lib/vmail/showing_message.rb', line 30

def fetch_and_cache(message_id)
  if message = cached_full_message?(message_id)
    log "- full message cache hit"        
    return message.plaintext
  end
  log "- full message cache miss"        
  labeling = Labeling[message_id: message_id, label_id: @label.label_id]
  uid = labeling.uid

  log "- fetching message uid #{uid}"        
  fetch_data = reconnect_if_necessary do 
    res = retry_if_needed do
      @imap.uid_fetch(uid, ["FLAGS", "RFC822", "RFC822.SIZE"])
    end
    res[0] 
  end
  seqno = fetch_data.seqno
  rfc822 = Mail.new(fetch_data.attr['RFC822'])
  formatter = Vmail::MessageFormatter.new rfc822

  message = Message[message_id]
  message_text = <<-EOF
#{message_id} #{number_to_human_size message.size} #{message.flags} #{format_parts_info(formatter.list_parts)}
#{divider '-'}
#{format_headers(formatter.extract_headers)}

#{formatter.plaintext_part}
EOF
  # 2 calls so we can see more fine grained exceptions
  message.update(:rfc822 => rfc822)
  if !message_text.valid_encoding?
    ic = Iconv.new('UTF-8//IGNORE', 'UTF-8')
    message_text = ic.iconv(message_text)
  end

  begin
    message.update(:plaintext => message_text) 
  rescue
    log message_text.encoding
    #log message_text
    raise
  end
  message_text
rescue
  msg = "Error encountered in fetch_and_cache(), message_id #{message_id} [#{@mailbox}]:\n#{$!}\n#{$!.backtrace.join("\n")}" 
  log msg
  msg
end

#format_parts_info(parts) ⇒ Object 



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# File 'lib/vmail/showing_message.rb', line 79

def format_parts_info(parts)
  lines = parts.select {|part| part !~ %r{text/plain}}
  if lines.size > 0
    "\n#{lines.join("\n")}"
  end
end

#show_message(message_id, raw = false) ⇒ Object 



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# File 'lib/vmail/showing_message.rb', line 20

def show_message(message_id, raw=false)
  message_id = message_id.strip.gsub('\\', '')
  log "Show message: #{message_id.inspect}"
  return current_message.rfc822 if raw 
  res = retry_if_needed { fetch_and_cache(message_id) }
  log "Showing message message_id: #{message_id}"
  @cur_message_id = message_id
  res
end