// Close returns the terminal to the original state.
func (t *Terminal) Close() error {
log.Println("Quiting Terminal")
wg := &sync.WaitGroup{}
wg.Add(2)
t.quitSignals <- wg
t.quitWriting <- wg
wg.Wait()
esc := t.escapes
t.WriteAll(
esc.ShowCursor(),
esc.Sgr0(),
esc.ClearScreen(),
esc.Exit(),
esc.ExitKeypad(),
esc.MouseExit())
term_sys.SetTerminalAttributes(t.termOut.Fd(), t.originalTermAtts)
err := syscall.Close(t.termIn)
t.termIn = 0 // File descriptor
if err != nil {
return fmt.Errorf("Close error %d", err) //TODO: log instead of print
}
return nil
}
func NewTerminal() (*Terminal, error) {
termOut, err := os.OpenFile("/dev/tty", syscall.O_WRONLY, 0)
if err != nil {
panic(err)
}
termIn, err := syscall.Open("/dev/tty", syscall.O_RDONLY, 0)
if err != nil {
panic(err)
}
_, err = term_sys.ChangeFileDescriptor(termIn, syscall.F_SETFL, syscall.O_ASYNC|syscall.O_NONBLOCK)
if err != nil {
return nil, err
}
_, err = term_sys.ChangeFileDescriptor(termIn, syscall.F_SETOWN, syscall.Getpid())
if runtime.GOOS != "darwin" && err != nil {
return nil, err
}
originalTermAtts, err := term_sys.SetupTerminalAttributes(termOut)
if err != nil {
panic(err)
}
setupTermAtts, err := term_sys.SetupTerminalAttributes(termOut)
if err != nil {
panic(err)
}
err = term_sys.SetTerminalAttributes(termOut.Fd(), setupTermAtts)
if err != nil {
panic(err)
}
w, h, err := term_sys.GetTerminalDims(termOut.Fd())
if err != nil {
panic(err)
}
t := &Terminal{
termOut: termOut,
termIn: termIn,
setupTermAtts: setupTermAtts,
originalTermAtts: originalTermAtts,
width: w,
height: h,
escapes: NewEscapes(),
onWindowSizeChange: term_sys.NewSignal(syscall.SIGWINCH),
onSignalEvent: term_sys.NewSignal(syscall.SIGIO),
quitSignals: make(chan *sync.WaitGroup, 0),
quitWriting: make(chan *sync.WaitGroup, 0),
inputParsing: NewInputParsing(),
}
return t, nil
}