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130 lines
3.3 KiB
Go
130 lines
3.3 KiB
Go
//go:build windows
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package util
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import (
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"fmt"
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"os"
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"os/exec"
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"regexp"
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"strings"
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"sync/atomic"
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"syscall"
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)
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type Executor struct {
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shell string
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args []string
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shellPath atomic.Value
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}
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func NewExecutor(withShell string) *Executor {
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shell := os.Getenv("SHELL")
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args := strings.Fields(withShell)
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if len(args) > 0 {
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shell = args[0]
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} else if len(shell) == 0 {
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shell = "cmd"
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}
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if len(args) > 0 {
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args = args[1:]
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} else if strings.Contains(shell, "cmd") {
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args = []string{"/v:on/s/c"}
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} else if strings.Contains(shell, "pwsh") || strings.Contains(shell, "powershell") {
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args = []string{"-NoProfile", "-Command"}
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} else {
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args = []string{"-c"}
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}
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return &Executor{shell: shell, args: args}
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}
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// ExecCommand executes the given command with $SHELL
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// FIXME: setpgid is unused. We set it in the Unix implementation so that we
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// can kill preview process with its child processes at once.
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// NOTE: For "powershell", we should ideally set output encoding to UTF8,
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// but it is left as is now because no adverse effect has been observed.
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func (x *Executor) ExecCommand(command string, setpgid bool) *exec.Cmd {
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shell := x.shell
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if cached := x.shellPath.Load(); cached != nil {
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shell = cached.(string)
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} else {
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if strings.Contains(shell, "/") {
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out, err := exec.Command("cygpath", "-w", shell).Output()
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if err == nil {
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shell = strings.Trim(string(out), "\n")
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}
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}
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x.shellPath.Store(shell)
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}
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cmd := exec.Command(shell, append(x.args, command)...)
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cmd.SysProcAttr = &syscall.SysProcAttr{
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HideWindow: false,
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CreationFlags: 0,
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}
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return cmd
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}
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func (x *Executor) Become(stdin *os.File, environ []string, command string) {
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cmd := x.ExecCommand(command, false)
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cmd.Stdin = stdin
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cmd.Stdout = os.Stdout
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cmd.Stderr = os.Stderr
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cmd.Env = environ
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err := cmd.Start()
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if err != nil {
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fmt.Fprintf(os.Stderr, "fzf (become): %s\n", err.Error())
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Exit(127)
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}
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err = cmd.Wait()
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if err != nil {
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if exitError, ok := err.(*exec.ExitError); ok {
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Exit(exitError.ExitCode())
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}
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}
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Exit(0)
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}
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func (x *Executor) QuoteEntry(entry string) string {
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if strings.Contains(x.shell, "cmd") {
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// backslash escaping is done here for applications
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// (see ripgrep test case in terminal_test.go#TestWindowsCommands)
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escaped := strings.Replace(entry, `\`, `\\`, -1)
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escaped = `"` + strings.Replace(escaped, `"`, `\"`, -1) + `"`
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// caret is the escape character for cmd shell
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r, _ := regexp.Compile(`[&|<>()@^%!"]`)
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return r.ReplaceAllStringFunc(escaped, func(match string) string {
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return "^" + match
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})
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} else if strings.Contains(x.shell, "pwsh") || strings.Contains(x.shell, "powershell") {
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escaped := strings.Replace(entry, `"`, `\"`, -1)
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return "'" + strings.Replace(escaped, "'", "''", -1) + "'"
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} else {
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return "'" + strings.Replace(entry, "'", "'\\''", -1) + "'"
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}
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}
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// KillCommand kills the process for the given command
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func KillCommand(cmd *exec.Cmd) error {
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return cmd.Process.Kill()
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}
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// IsWindows returns true on Windows
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func IsWindows() bool {
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return true
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}
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// SetNonblock executes syscall.SetNonblock on file descriptor
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func SetNonblock(file *os.File, nonblock bool) {
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syscall.SetNonblock(syscall.Handle(file.Fd()), nonblock)
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}
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// Read executes syscall.Read on file descriptor
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func Read(fd int, b []byte) (int, error) {
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return syscall.Read(syscall.Handle(fd), b)
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}
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func SetStdin(file *os.File) {
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// No-op
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}
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