opisz ten poniższy algorytm krok po kroku, co robi w danej linijce, tak jakbyś pisał na jego temat artykuł

package main

import (
	"flag"
	"fmt"
	"io/ioutil"
	"os"
	"strconv"
	"strings"
)

const base = 128

func encodeBase128(input string) []int {
	result := []int{}
	for _, char := range input {
		result = append(result, int(char))
	}
	return result
}

func decodeBase128(input []int) string {
	result := ""
	for _, code := range input {
		result += string(rune(code))
	}
	return result
}

func main() {
	encodeFlag := flag.Bool("e", false, "Converts the input's base128 encoding into an output text file.")
	decodeFlag := flag.Bool("d", false, "Recovers the original input file by decoding the information that was previously encoded using base128.")
	helpFlag := flag.Bool("h", false, "Print instructions for calling and a list of available alternatives.")
	versionFlag := flag.Bool("version", false, "Print the program's version.")
	copyrightFlag := flag.Bool("copyright", false, "Print copyright information.")
	flag.Parse()

	if *helpFlag {
		fmt.Println("base128 - Encodes or decodes FILE, or standard input, to standard output or a file as base128.")
		fmt.Println("base128 [OPTION]... [FILE input] > [FILE output]")
		fmt.Println()
		fmt.Println("EXAMPLE encode: base128 -e encode.txt > decode.txt")
		fmt.Println("EXAMPLE decode: base128 -d decode.txt > encode2.txt")
		fmt.Println()
		fmt.Println("Options:")
		fmt.Println()
		fmt.Println("  -d, --decode          Recovers the original input file by decoding the information that was previously encoded using base128.")
		fmt.Println("  -e, --encode          Converts the input's base128 encoding into an output text file.")
		fmt.Println("  -h, --help            Print instructions for calling and a list of available alternatives.")
		fmt.Println("      --version         Print the program's version.")
		fmt.Println("      --copyright       Print copyright information.")
		fmt.Println()
		fmt.Println("(c) by Lukasz Wojcik 2023")
		fmt.Println("http://www.base128.com")
		os.Exit(0)
	}

	if *versionFlag {
		fmt.Println("base128 version 1.0/2023")
		os.Exit(0)
	}

	if *copyrightFlag {
		fmt.Println("base128 (C) 2023 by Lukasz Wojcik")
		os.Exit(0)
	}

	if *encodeFlag && *decodeFlag {
		fmt.Fprintln(os.Stderr, "base128: cannot specify. Please -e for ENCODE or -d for DECODE or -h for HELP")
		os.Exit(1)
	}

	if !*encodeFlag && !*decodeFlag {
		fmt.Fprintln(os.Stderr, "base128: cannot specify. Please -e for ENCODE or -d for DECODE or -h for HELP")
		os.Exit(1)
	}

	args := flag.Args()
	var input string
	if len(args) == 0 || args[0] == "-" {
		bytes, err := ioutil.ReadAll(os.Stdin)
		if err != nil {
			panic(err)
		}
		input = strings.TrimSpace(string(bytes))
	} else {
		bytes, err := ioutil.ReadFile(args[0])
		if err != nil {
			panic(err)
		}
		input = strings.TrimSpace(string(bytes))
	}

	if *encodeFlag {
		input = strings.Replace(input, "\n", "", -1)
		input = strings.Replace(input, "\r", "", -1)
		input = strings.TrimSpace(input)
		numbers := encodeBase128(input)
		output := strings.Trim(strings.Join(strings.Fields(fmt.Sprint(numbers)), " "), "[]")
		fmt.Println(output)
	} else if *decodeFlag {
		input = strings.Replace(input, "\n", "", -1)
		input = strings.Replace(input, "\r", "", -1)
		input = strings.TrimSpace(input)
		numbersStr := strings.Split(input, " ")
		numbers := make([]int, len(numbersStr))
		for i, numberStr := range numbersStr {
			numberStr = strings.TrimSpace(numberStr)
			number, err := strconv.Atoi(numberStr)
			if err != nil {
				panic(err)
			}
			numbers[i] = number
		}
		output := decodeBase128(numbers)
		fmt.Println(output)
	}
 }