//go:build windows package util import ( "fmt" "os" "os/exec" "strings" "sync/atomic" "syscall" ) var shellPath atomic.Value // ExecCommand executes the given command with $SHELL func ExecCommand(command string, setpgid bool) *exec.Cmd { var shell string if cached := shellPath.Load(); cached != nil { shell = cached.(string) } else { shell = os.Getenv("SHELL") if len(shell) == 0 { shell = "cmd" } else if strings.Contains(shell, "/") { out, err := exec.Command("cygpath", "-w", shell).Output() if err == nil { shell = strings.Trim(string(out), "\n") } } shellPath.Store(shell) } return ExecCommandWith(shell, command, setpgid) } // ExecCommandWith executes the given command with the specified shell // FIXME: setpgid is unused. We set it in the Unix implementation so that we // can kill preview process with its child processes at once. // NOTE: For "powershell", we should ideally set output encoding to UTF8, // but it is left as is now because no adverse effect has been observed. func ExecCommandWith(shell string, command string, setpgid bool) *exec.Cmd { var cmd *exec.Cmd if strings.Contains(shell, "cmd") { cmd = exec.Command(shell) cmd.SysProcAttr = &syscall.SysProcAttr{ HideWindow: false, CmdLine: fmt.Sprintf(` /v:on/s/c "%s"`, command), CreationFlags: 0, } return cmd } if strings.Contains(shell, "pwsh") || strings.Contains(shell, "powershell") { cmd = exec.Command(shell, "-NoProfile", "-Command", command) } else { cmd = exec.Command(shell, "-c", command) } cmd.SysProcAttr = &syscall.SysProcAttr{ HideWindow: false, CreationFlags: 0, } return cmd } // KillCommand kills the process for the given command func KillCommand(cmd *exec.Cmd) error { return cmd.Process.Kill() } // IsWindows returns true on Windows func IsWindows() bool { return true } // SetNonblock executes syscall.SetNonblock on file descriptor func SetNonblock(file *os.File, nonblock bool) { syscall.SetNonblock(syscall.Handle(file.Fd()), nonblock) } // Read executes syscall.Read on file descriptor func Read(fd int, b []byte) (int, error) { return syscall.Read(syscall.Handle(fd), b) }