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|
package main
import (
"fmt"
"github.com/fatih/color"
"strings"
"time"
)
var (
loadingDone chan struct{}
loadingStopped chan struct{}
)
func showLoadingPrompt(msg string) {
if loadingDone != nil {
return
}
loadingDone = make(chan struct{})
loadingStopped = make(chan struct{})
go func() {
defer close(loadingStopped)
white := color.New(color.FgWhite)
for {
select {
case <-loadingDone:
fmt.Print("\r")
fmt.Print(strings.Repeat(" ", len(msg)+4))
fmt.Print("\r")
return
default:
white.Printf("\r%s", msg)
for i := range 4 {
if i == 3 {
white.Print("?")
} else {
white.Print(".")
}
time.Sleep(700 * time.Millisecond)
}
}
}
}()
}
func hideLoadingPrompt() {
if loadingDone != nil {
close(loadingDone)
<-loadingStopped
loadingDone = nil
fmt.Print("\r\033[2K")
}
}
|
