| package tty |
| |
| import ( |
| "bufio" |
| "errors" |
| "os" |
| "syscall" |
| ) |
| |
| type TTY struct { |
| in *os.File |
| bin *bufio.Reader |
| out *os.File |
| } |
| |
| func open(path string) (*TTY, error) { |
| tty := new(TTY) |
| |
| in, err := os.Open("/dev/cons") |
| if err != nil { |
| return nil, err |
| } |
| tty.in = in |
| tty.bin = bufio.NewReader(in) |
| |
| out, err := os.OpenFile("/dev/cons", syscall.O_WRONLY, 0) |
| if err != nil { |
| return nil, err |
| } |
| tty.out = out |
| |
| return tty, nil |
| } |
| |
| func (tty *TTY) buffered() bool { |
| return tty.bin.Buffered() > 0 |
| } |
| |
| func (tty *TTY) readRune() (rune, error) { |
| r, _, err := tty.bin.ReadRune() |
| return r, err |
| } |
| |
| func (tty *TTY) close() (err error) { |
| if err2 := tty.in.Close(); err2 != nil { |
| err = err2 |
| } |
| if err2 := tty.out.Close(); err2 != nil { |
| err = err2 |
| } |
| return |
| } |
| |
| func (tty *TTY) size() (int, int, error) { |
| return 80, 24, nil |
| } |
| |
| func (tty *TTY) sizePixel() (int, int, int, int, error) { |
| x, y, _ := tty.size() |
| return x, y, -1, -1, errors.New("no implemented method for querying size in pixels on Plan 9") |
| } |
| |
| func (tty *TTY) input() *os.File { |
| return tty.in |
| } |
| |
| func (tty *TTY) output() *os.File { |
| return tty.out |
| } |