github.com/fnproject/cli@v0.0.0-20240508150455-e5d88bd86117/commands/invoke_windows.go (about) 1 //go:build windows 2 3 /* 4 * Copyright (c) 2019, 2020 Oracle and/or its affiliates. All rights reserved. 5 * 6 * Licensed under the Apache License, Version 2.0 (the "License"); 7 * you may not use this file except in compliance with the License. 8 * You may obtain a copy of the License at 9 * 10 * http://www.apache.org/licenses/LICENSE-2.0 11 * 12 * Unless required by applicable law or agreed to in writing, software 13 * distributed under the License is distributed on an "AS IS" BASIS, 14 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 15 * See the License for the specific language governing permissions and 16 * limitations under the License. 17 */ 18 19 package commands 20 21 import ( 22 "io" 23 "os" 24 "syscall" 25 "unsafe" 26 ) 27 28 func stdin() io.Reader { 29 if isTerminal(int(os.Stdin.Fd())) { 30 return nil 31 } 32 return os.Stdin 33 } 34 35 func isTerminal(fd int) bool { 36 kernel32 := syscall.NewLazyDLL("kernel32.dll") 37 procGetConsoleMode := kernel32.NewProc("GetConsoleMode") 38 var st uint32 39 r, _, e := syscall.Syscall(procGetConsoleMode.Addr(), 2, uintptr(fd), uintptr(unsafe.Pointer(&st)), 0) 40 return r != 0 && e == 0 41 }