main.go

package main

import (
	"fmt"
	"github.com/fatih/color"
	"github.com/urfave/cli/v2"
	"log"
	"main/core"
	"os"
)

var version = "1.0.0"

var (
	enableAlgorithms cli.StringSlice
	threads          int
)

func main() {

	app := &cli.App{
		EnableBashCompletion:  true,
		Name:                  "hash",
		Usage:                 "calculate the core value of a file or string",
		Version:               "v" + version,
		CustomAppHelpTemplate: fmt.Sprintf("%s\n%s\n", getBanner(), cli.AppHelpTemplate),
		Action: func(context *cli.Context) error {
			if len(os.Args) == 1 {
				err := cli.ShowAppHelp(context)
				if err != nil {
					return err
				}
			}
			return nil
		},
		Flags: []cli.Flag{
			&cli.StringSliceFlag{
				Name:        "enable",
				Aliases:     []string{"e"},
				Value:       cli.NewStringSlice("crc32", "md5", "sha1", "sha256", "sha512"),
				Usage:       "enabled hashing algorithms",
				Destination: &enableAlgorithms,
			},
			&cli.StringSliceFlag{
				Name:    "path",
				Aliases: []string{"p"},
				Usage:   "file path",
				Action: func(context *cli.Context, strings []string) error {
					core.FilesHashReport(strings, enableAlgorithms.Value(), threads)
					return nil
				},
			},
			&cli.IntFlag{
				Name:        "thread",
				Value:       6,
				Aliases:     []string{"t"},
				Usage:       "number of threads",
				Destination: &threads,
			},
			&cli.StringFlag{
				Name:    "string",
				Aliases: []string{"s"},
				Usage:   "computes a string core",
				Action: func(context *cli.Context, s string) error {
					core.StringHashReport(s, enableAlgorithms.Value())
					return nil
				},
			},
		},
	}

	if err := app.Run(os.Args); err != nil {

		log.Fatal(err)
	}
}

func getBanner() string {
	yellow := color.New(color.FgYellow).SprintFunc()
	green := color.New(color.FgGreen).SprintFunc()
	cyan := color.New(color.FgCyan).SprintFunc()
	red := color.New(color.FgRed).SprintFunc()
	return `
 ██      ██                   ██     
░██     ░██                  ░██     
░██     ░██  ██████    ██████░██     
░██████████ ░░░░░░██  ██░░░░ ░██████ 
░██░░░░░░██  ███████ ░░█████ ░██░░░██
░██     ░██ ██░░░░██  ░░░░░██░██  ░██
░██     ░██░░████████ ██████ ░██  ░██
░░      ░░  ░░░░░░░░ ░░░░░░  ░░   ░░` +
		"\n" +
		green("v"+version) +
		"\n" +
		red("Powered by ") + cyan("G3G4X5X6") +
		"\n" +
		yellow("——————————————————————————————————————————————————————————")
}