new readline library (#847)

readline/term.go

@@ -0,0 +1,35 @@
+// +build aix darwin dragonfly freebsd linux,!appengine netbsd openbsd os400 solaris
+package readline
+
+import (
+	"syscall"
+)
+
+type Termios syscall.Termios
+
+func SetRawMode(fd int) (*Termios, error) {
+	termios, err := getTermios(fd)
+	if err != nil {
+		return nil, err
+	}
+
+	newTermios := *termios
+	newTermios.Iflag &^= syscall.IGNBRK | syscall.BRKINT | syscall.PARMRK | syscall.ISTRIP | syscall.INLCR | syscall.IGNCR | syscall.ICRNL | syscall.IXON
+	newTermios.Lflag &^= syscall.ECHO | syscall.ECHONL | syscall.ICANON | syscall.ISIG | syscall.IEXTEN
+	newTermios.Cflag &^= syscall.CSIZE | syscall.PARENB
+	newTermios.Cflag |= syscall.CS8
+	newTermios.Cc[syscall.VMIN] = 1
+	newTermios.Cc[syscall.VTIME] = 0
+
+	return termios, setTermios(fd, &newTermios)
+}
+
+func UnsetRawMode(fd int, termios *Termios) error {
+	return setTermios(fd, termios)
+}
+
+// IsTerminal returns true if the given file descriptor is a terminal.
+func IsTerminal(fd int) bool {
+        _, err := getTermios(fd)
+        return err == nil
+}