TUI Basic

README.md

TUI Basic

go run basic.go

basic.go

package main

import (
	"bufio"
	"fmt"
	"os"
	"strings"
	"time"
)

const (
	hide  = "\033[?25l"
	show  = "\033[?25h"
	save  = "\033[s"
	load  = "\033[u"
	top   = "\033[1;0H"
	clear = "\033[2K"
	cyan  = "\033[36m"
	reset = "\033[0m"
)

func main() {
	stop := make(chan bool)
	fmt.Print(hide, save, "\n\n", load) // init screen

	// Animation in goroutine
	go func() {
		f := []string{"⠋", "⠙", "⠹", "⠸", "⠼", "⠴", "⠦", "⠧", "⠇", "⠏"}
		for i := 0; ; i = (i + 1) % len(f) {
			select {
			case <-stop:
				return
			default:
				fmt.Printf("%s%s%s%s%s Loading...%s", save, top, clear, cyan, f[i], load)
				time.Sleep(100 * time.Millisecond)
			}
		}
	}()

	// Handle input
	scanner := bufio.NewScanner(os.Stdin)
	fmt.Print("> ")
	for scanner.Scan() {
		cmd := strings.TrimSpace(scanner.Text())
		if cmd == "exit" {
			break
		}
		fmt.Printf("You typed: %s\n> ", cmd)
	}

	stop <- true
	fmt.Print(show) // restore cursor
}