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38 lines
1 KiB
Go
38 lines
1 KiB
Go
package term
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import (
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"unsafe"
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"golang.org/x/sys/unix"
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)
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const (
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getTermios = unix.TCGETS
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setTermios = unix.TCSETS
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)
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// Termios is the Unix API for terminal I/O.
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type Termios unix.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 := unix.Syscall(unix.SYS_IOCTL, fd, getTermios, uintptr(unsafe.Pointer(&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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newState.Iflag &^= (unix.IGNBRK | unix.BRKINT | unix.PARMRK | unix.ISTRIP | unix.INLCR | unix.IGNCR | unix.ICRNL | unix.IXON)
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newState.Oflag |= unix.OPOST
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newState.Lflag &^= (unix.ECHO | unix.ECHONL | unix.ICANON | unix.ISIG | unix.IEXTEN)
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newState.Cflag &^= (unix.CSIZE | unix.PARENB)
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newState.Cflag |= unix.CS8
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if _, _, err := unix.Syscall(unix.SYS_IOCTL, fd, setTermios, uintptr(unsafe.Pointer(&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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