Created
September 21, 2018 21:21
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| package main | |
| import ( | |
| "flag" | |
| "fmt" | |
| "log" | |
| "net/http" | |
| "os" | |
| "os/exec" | |
| "os/signal" | |
| "strings" | |
| "syscall" | |
| "github.com/fatih/color" | |
| ) | |
| var clear = flag.Bool("clear", false, "clear the terminal each time") | |
| var cmdParts []string | |
| var cmd *exec.Cmd | |
| func killIfRunning(cmd *exec.Cmd) { | |
| if cmd != nil { | |
| syscall.Kill(-cmd.Process.Pid, syscall.SIGKILL) | |
| } | |
| } | |
| func runCommand() { | |
| blue := color.New(color.FgBlue) | |
| reset := color.New(color.Reset) | |
| killIfRunning(cmd) | |
| cmdParts := flag.Args() | |
| if *clear { | |
| clear := exec.Command("clear") | |
| clear.Stdout = os.Stdout | |
| clear.Start() | |
| clear.Wait() | |
| } | |
| cmd = exec.Command(cmdParts[0], cmdParts[1:]...) | |
| cmd.SysProcAttr = &syscall.SysProcAttr{Setpgid: true} | |
| cmd.Stdout = os.Stdout | |
| cmd.Stderr = os.Stderr | |
| blue.Println("Running " + reset.Sprint(strings.Join(cmd.Args, " "))) | |
| if err := cmd.Start(); err != nil { | |
| fmt.Fprintln(os.Stderr, err) | |
| } | |
| go func() { | |
| if err := cmd.Wait(); err == nil { | |
| blue.Println("Done") | |
| } else { | |
| blue.Println("Done: " + err.Error()) | |
| } | |
| }() | |
| } | |
| func main() { | |
| flag.Parse() | |
| cmdParts = flag.Args() | |
| c := make(chan os.Signal, 1) | |
| signal.Notify(c, os.Interrupt) | |
| go func() { | |
| for range c { | |
| if cmd != nil { | |
| syscall.Kill(-cmd.Process.Pid, syscall.SIGKILL) | |
| } | |
| os.Exit(0) | |
| } | |
| }() | |
| http.HandleFunc("/", func(w http.ResponseWriter, r *http.Request) { | |
| if r.URL.Path != "/" { | |
| return | |
| } | |
| runCommand() | |
| }) | |
| runCommand() | |
| err := http.ListenAndServe(":7416", nil) | |
| if err != nil { | |
| killIfRunning(cmd) | |
| log.Fatal("ListenAndServe: ", err) | |
| } | |
| } |
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