Browse code
Use termios via CGO
Signed-off-by: Yohei Ueda <yohei@jp.ibm.com>
Yohei Ueda authored on 2014/11/21 22:12:03Showing 6 changed files
- pkg/term/term.go
- pkg/term/term_cgo.go
- pkg/term/term_nocgo.go
- pkg/term/termios_darwin.go
- pkg/term/termios_freebsd.go
- pkg/term/termios_linux.go
| ... | ... |
@@ -47,8 +47,7 @@ func SetWinsize(fd uintptr, ws *Winsize) error {
|
| 47 | 47 |
// IsTerminal returns true if the given file descriptor is a terminal. |
| 48 | 48 |
func IsTerminal(fd uintptr) bool {
|
| 49 | 49 |
var termios Termios |
| 50 |
- _, _, err := syscall.Syscall(syscall.SYS_IOCTL, fd, uintptr(getTermios), uintptr(unsafe.Pointer(&termios))) |
|
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- return err == 0 |
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+ return tcget(fd, &termios) == 0 |
|
| 52 | 51 |
} |
| 53 | 52 |
|
| 54 | 53 |
// Restore restores the terminal connected to the given file descriptor to a |
| ... | ... |
@@ -57,8 +56,7 @@ func RestoreTerminal(fd uintptr, state *State) error {
|
| 57 | 57 |
if state == nil {
|
| 58 | 58 |
return ErrInvalidState |
| 59 | 59 |
} |
| 60 |
- _, _, err := syscall.Syscall(syscall.SYS_IOCTL, fd, uintptr(setTermios), uintptr(unsafe.Pointer(&state.termios))) |
|
| 61 |
- if err != 0 {
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| 60 |
+ if err := tcset(fd, &state.termios); err != 0 {
|
|
| 62 | 61 |
return err |
| 63 | 62 |
} |
| 64 | 63 |
return nil |
| ... | ... |
@@ -66,7 +64,7 @@ func RestoreTerminal(fd uintptr, state *State) error {
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| 66 | 66 |
|
| 67 | 67 |
func SaveState(fd uintptr) (*State, error) {
|
| 68 | 68 |
var oldState State |
| 69 |
- if _, _, err := syscall.Syscall(syscall.SYS_IOCTL, fd, getTermios, uintptr(unsafe.Pointer(&oldState.termios))); err != 0 {
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|
| 69 |
+ if err := tcget(fd, &oldState.termios); err != 0 {
|
|
| 70 | 70 |
return nil, err |
| 71 | 71 |
} |
| 72 | 72 |
|
| ... | ... |
@@ -77,7 +75,7 @@ func DisableEcho(fd uintptr, state *State) error {
|
| 77 | 77 |
newState := state.termios |
| 78 | 78 |
newState.Lflag &^= syscall.ECHO |
| 79 | 79 |
|
| 80 |
- if _, _, err := syscall.Syscall(syscall.SYS_IOCTL, fd, setTermios, uintptr(unsafe.Pointer(&newState))); err != 0 {
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|
| 80 |
+ if err := tcset(fd, &newState); err != 0 {
|
|
| 81 | 81 |
return err |
| 82 | 82 |
} |
| 83 | 83 |
handleInterrupt(fd, state) |
| 84 | 84 |
new file mode 100644 |
| ... | ... |
@@ -0,0 +1,47 @@ |
| 0 |
+// +build !windows,cgo |
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+ |
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+package term |
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+ |
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+import ( |
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+ "syscall" |
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+ "unsafe" |
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+) |
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+ |
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+// #include <termios.h> |
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+import "C" |
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+ |
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+type Termios syscall.Termios |
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+ |
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+// MakeRaw put the terminal connected to the given file descriptor into raw |
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+// mode and returns the previous state of the terminal so that it can be |
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+// restored. |
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+func MakeRaw(fd uintptr) (*State, error) {
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+ var oldState State |
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+ if err := tcget(fd, &oldState.termios); err != 0 {
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+ return nil, err |
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+ } |
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+ |
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+ newState := oldState.termios |
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+ |
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+ C.cfmakeraw((*C.struct_termios)(unsafe.Pointer(&newState))) |
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+ if err := tcset(fd, &newState); err != 0 {
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+ return nil, err |
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+ } |
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+ return &oldState, nil |
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+} |
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+ |
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+func tcget(fd uintptr, p *Termios) syscall.Errno {
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+ ret, err := C.tcgetattr(C.int(fd), (*C.struct_termios)(unsafe.Pointer(p))) |
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+ if ret != 0 {
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+ return err.(syscall.Errno) |
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+ } |
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+ return 0 |
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+} |
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+ |
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+func tcset(fd uintptr, p *Termios) syscall.Errno {
|
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+ ret, err := C.tcsetattr(C.int(fd), C.TCSANOW, (*C.struct_termios)(unsafe.Pointer(p))) |
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+ if ret != 0 {
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+ return err.(syscall.Errno) |
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+ } |
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+ return 0 |
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+} |
| 0 | 47 |
new file mode 100644 |
| ... | ... |
@@ -0,0 +1,18 @@ |
| 0 |
+// +build !windows,!cgo |
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+ |
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+package term |
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+ |
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+import ( |
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+ "syscall" |
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+ "unsafe" |
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+) |
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+ |
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+func tcget(fd uintptr, p *Termios) syscall.Errno {
|
|
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+ _, _, err := syscall.Syscall(syscall.SYS_IOCTL, fd, uintptr(getTermios), uintptr(unsafe.Pointer(p))) |
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+ return err |
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+} |
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+ |
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+func tcset(fd uintptr, p *Termios) syscall.Errno {
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+ _, _, err := syscall.Syscall(syscall.SYS_IOCTL, fd, setTermios, uintptr(unsafe.Pointer(p))) |
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+ return err |
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+} |