Code refactoring after #1141

pkg/shell/tty.go

@@ -1,7 +0,0 @@
-//go:build !unix && !windows
-
-package shell
-
-func IsInteractive(fd uintptr) bool {
-	return false
-}

pkg/shell/tty_unix.go

@@ -1,10 +0,0 @@
-//go:build unix
-
-package shell
-
-import "golang.org/x/sys/unix"
-
-func IsInteractive(fd uintptr) bool {
-	_, err := unix.IoctlGetTermios(int(fd), unix.TIOCGETA)
-	return err == nil
-}

pkg/shell/tty_windows.go

@@ -1,19 +0,0 @@
-//go:build windows
-
-package shell
-
-import (
-	"syscall"
-	"unsafe"
-)
-
-var (
-	kernel32           = syscall.NewLazyDLL("kernel32.dll")
-	procGetConsoleMode = kernel32.NewProc("GetConsoleMode")
-)
-
-func IsInteractive(fd uintptr) bool {
-	var st uint32
-	r, _, e := syscall.Syscall(procGetConsoleMode.Addr(), 2, fd, uintptr(unsafe.Pointer(&st)), 0)
-	return r != 0 && e == 0
-}