This repository has been archived by the owner on Jul 25, 2018. It is now read-only.
-
Notifications
You must be signed in to change notification settings - Fork 0
/
term.go
63 lines (54 loc) · 1.41 KB
/
term.go
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
package term
import (
"os"
"os/signal"
"syscall"
"unsafe"
)
type State struct {
termios Termios
}
type Winsize struct {
Width uint16
Height uint16
x uint16
y uint16
}
func GetWinsize(fd uintptr) (*Winsize, error) {
ws := &Winsize{}
_, _, err := syscall.Syscall(syscall.SYS_IOCTL, fd, uintptr(syscall.TIOCGWINSZ), uintptr(unsafe.Pointer(ws)))
return ws, err
}
func SetWinsize(fd uintptr, ws *Winsize) error {
_, _, err := syscall.Syscall(syscall.SYS_IOCTL, fd, uintptr(syscall.TIOCSWINSZ), uintptr(unsafe.Pointer(ws)))
return err
}
// IsTerminal returns true if the given file descriptor is a terminal.
func IsTerminal(fd uintptr) bool {
var termios Termios
_, _, err := syscall.Syscall(syscall.SYS_IOCTL, fd, uintptr(getTermios), uintptr(unsafe.Pointer(&termios)))
return err == 0
}
// Restore restores the terminal connected to the given file descriptor to a
// previous state.
func Restore(fd uintptr, state *State) error {
_, _, err := syscall.Syscall(syscall.SYS_IOCTL, fd, uintptr(setTermios), uintptr(unsafe.Pointer(&state.termios)))
return err
}
func SetRawTerminal() (*State, error) {
oldState, err := MakeRaw(os.Stdin.Fd())
if err != nil {
return nil, err
}
c := make(chan os.Signal, 1)
signal.Notify(c, os.Interrupt)
go func() {
_ = <-c
Restore(os.Stdin.Fd(), oldState)
os.Exit(0)
}()
return oldState, err
}
func RestoreTerminal(state *State) {
Restore(os.Stdin.Fd(), state)
}