48 lines
1 KiB
Go
48 lines
1 KiB
Go
// +build linux,cgo
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package term
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import (
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"syscall"
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"unsafe"
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)
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// #include <termios.h>
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import "C"
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type Termios syscall.Termios
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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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newState := oldState.termios
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C.cfmakeraw((*C.struct_termios)(unsafe.Pointer(&newState)))
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newState.Oflag = newState.Oflag | C.OPOST
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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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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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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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}
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