still use cgo for getchar

selector/getchar.go

@@ -1,29 +1,8 @@
 package selector
 
-import (
-	"os"
-	"syscall"
-	"unsafe"
-)
+// #include <stdio.h>
+import "C"
 
-// implement getChar
-func getChar() {
-	fd, err := os.Open("/dev/tty")
-	if err != nil {
-		panic(err)
-	}
-
-	var term syscall.Termios
-	ptr := uintptr(unsafe.Pointer(&term))
-	syscall.Syscall6(syscall.SYS_IOCTL, fd.Fd(), syscall.TIOCGETA, ptr, 0, 0, 0)
-
-	// setup nobuffer
-	term.Lflag &^= syscall.ICANON
-	term.Cc[syscall.VMIN] = 1
-	term.Cc[syscall.VTIME] = 0
-	syscall.Syscall6(syscall.SYS_IOCTL, fd.Fd(), syscall.TIOCSETA, ptr, 0, 0, 0)
-
-	// read
-	b := make([]byte, 4)
-	syscall.Read(int(fd.Fd()), b)
+func getchar() {
+	C.getchar()
 }

selector/selector.go

@@ -99,6 +99,6 @@ func execute(name string, args ...string) {
 	if err != nil {
 		println(os.Stdout, "> exec error: ", err)
 		println(os.Stdout, "> press any key to continue")
-		getChar()
+		getchar()
 	}
 }

selector/server.go

@@ -63,7 +63,7 @@ func loadServers() (arr []server) {
 			fmt.Printf("> %v: %v \n", i+1, e)
 		}
 		fmt.Println("> press any key to continue")
-		getChar()
+		getchar()
 	}
 	return
 }