Method: Textbringer::Buffer#re_search_backward

Defined in:

lib/textbringer/buffer.rb

#re_search_backward(s, raise_error: true, count: 1) ⇒ Object

# File 'lib/textbringer/buffer.rb', line 1116

def re_search_backward(s, raise_error: true, count: 1)
  if count < 0
    return re_search_forward(s, raise_error: raise_error, count: -count)
  end
  re = new_regexp(s)
  pos = @point
  count.times do
    p = pos
    begin
      i = byteindex(false, re, p)
      if i.nil?
        if raise_error
          raise SearchError, "Search failed"
        else
          return nil
        end
      end
      p = get_pos(p, -1)
    rescue RangeError
      if raise_error
        raise SearchError, "Search failed"
      else
        return nil
      end
    end while match_end(0) > pos
    pos = match_beginning(0)
  end
  goto_char(pos)
end