class RPStringScanner

# File lib/rp_stringscanner.rb, line 23
def charpos
  string_to_pos.length
end

# File lib/rp_stringscanner.rb, line 60
def d o
  $stderr.puts o.inspect
end

# File lib/rp_stringscanner.rb, line 45
def getch
  c = self.old_getch
  p :getch => [c, caller.first]
  c
end

# File lib/rp_stringscanner.rb, line 52
def scan re
  s = old_scan re
  where = caller[1].split(/:/).first(2).join(":")
  d :scan => [s, where] if s
  s
end

# File lib/rp_stringscanner.rb, line 14
def string_to_pos
  string.byteslice(0, pos)
end

# File lib/rp_stringscanner.rb, line 34
def unread_many str # TODO: remove this entirely - we should not need it
  warn({:unread_many => caller[0]}.inspect) if ENV['TALLY']
  begin
    string[charpos, 0] = str
  rescue IndexError
    # HACK -- this is a bandaid on a dirty rag on an open festering wound
  end
end