class BBS::AI::Typewriter

Types streamed text onto a FakeOS console, word-wrapped to the caller’s terminal under a prefix:

ACP: The bus is quiet tonight, and I am
     listening to it.

Words are held back until they are whole, and whitespace is written only before the next word, so a reply never ends on a dangling blank line.

Public Class Methods

new (io, prefix: '', style: :text, width: nil)

Source

# File lib/bbs/ai.rb, line 402
def initialize(io, prefix: '', style: :text, width: nil)
  @io      = io
  @style   = style
  @indent  = ' ' * prefix.size
  @width   = [(width || (io.cols - 1)) - prefix.size, 20].max
  @col     = 0
  @gap     = nil
  @pending = +''
  @io.print prefix, style: @style, newline: 0
end

Creates a typewriter on io (a FakeOS console) and prints prefix.

prefix: printed once; wrapped lines are indented by its length
style: the FakeOS style the text is printed in
width: the line width, by default one less than the terminal’s; at least 20 columns are left for the text

Public Instance Methods

finish (newlines: 2)

Source

# File lib/bbs/ai.rb, line 425
def finish(newlines: 2)
  word(@pending)
  @pending = +''
  @io.newline(newlines)
end

Writes the last word and newlines line breaks.

write (piece)

Source

# File lib/bbs/ai.rb, line 415
def write(piece)
  @pending << piece
  while (m = @pending.match(Text::WHITESPACE))
    word(m.pre_match)
    @gap = "#{@gap}#{m[0]}"
    @pending = m.post_match
  end
end

Adds piece of the streamed text, printing every word it completes and keeping the unfinished one back.