go-скрипт который делает аудиокнигу из текстового файла используя один из лучших синтезаторов речи — Ivona от Amazon

package main

import (
	ivona "github.com/jpadilla/ivona-go"

	"bufio"
	"flag"
	"fmt"
	"io/ioutil"
	"log"
	"os"
	"path/filepath"
	"strings"
)

const format = "tts%04d.ogg" // files like 0001.ogg

var dir = flag.String("dir", ".", "like /home/vitaly/Desktop/")
var textFile = flag.String("text", "", "path to text file, like /home/vitaly/Desktop/test.txt")
var key = flag.String("key", "GDNAICTDMLSLU5426OAA", "access key for ivona api")
var secret = flag.String("secret", "2qUFTF8ZF9wqy7xoGBY+YXLEu+M2Qqalf/pSrd9m", "secret key for ivona api")

func main() {
	flag.Parse()

	conf := os.Stdin // если нет конфига, но читаем стандартный ввод
	if *textFile != "" {
		conf, err := os.Open(*textFile)
		if err != nil {
			log.Fatal(err)
		}
		defer conf.Close()
	}

	client := ivona.New(*key, *secret)
	scanner := bufio.NewScanner(conf)
	for i := 1; scanner.Scan(); i++ {
		paragraph := strings.TrimSpace(scanner.Text())
		if paragraph == "" { // пропускаем пустые строки
			continue
		}
		log.Printf("process: %v\n", paragraph)

		options := ivona.NewSpeechOptions(paragraph)
		options.Voice.Language = "ru-RU"
		options.Voice.Name = "Maxim"
		options.Voice.Gender = "Male"
		options.OutputFormat.Codec = "OGG"

		r, err := client.CreateSpeech(options)
		if err != nil {
			log.Fatal(err)
		}

		file := filepath.Join(*dir, fmt.Sprintf(format, i))
		err = ioutil.WriteFile(file, r.Audio, 0644)
		if err != nil {
			log.Fatalln("writing result file:", err)
		}
	}

	if err := scanner.Err(); err != nil {
		log.Fatalln("reading text file:", err)
	}
}

4d3
< 	"fmt"
5a5,8
> 
> 	"bufio"
> 	"flag"
> 	"fmt"
7a11,12
> 	"os"
> 	"path/filepath"
10a16,22
> const format = "tts%04d.ogg" // files like 0001.ogg
> 
> var dir = flag.String("dir", ".", "like /home/vitaly/Desktop/")
> var textFile = flag.String("text", "", "path to text file, like /home/vitaly/Desktop/test.txt")
> var key = flag.String("key", "GDNAICTDMLSLU5426OAA", "access key for ivona api")
> var secret = flag.String("secret", "2qUFTF8ZF9wqy7xoGBY+YXLEu+M2Qqalf/pSrd9m", "secret key for ivona api")
> 
12,15c24,32
< 	client := ivona.New("GDNAICTDMLSLU5426OAA", "2qUFTF8ZF9wqy7xoGBY+YXLEu+M2Qqalf/pSrd9m")
< 	text, err := ioutil.ReadFile("/home/vitaly/Desktop/test.txt")
< 	if err != nil {
< 		log.Fatal(err)
---
> 	flag.Parse()
> 
> 	conf := os.Stdin // если нет конфига, но читаем стандартный ввод
> 	if *textFile != "" {
> 		conf, err := os.Open(*textFile)
> 		if err != nil {
> 			log.Fatal(err)
> 		}
> 		defer conf.Close()
18,21c35,39
< 	arrayOfParagraphs := strings.Split(string(text), "\n")
< 	i := 0
< 	for _, paragraph := range arrayOfParagraphs {
< 		if len(paragraph) < 4 { // against empty lines
---
> 	client := ivona.New(*key, *secret)
> 	scanner := bufio.NewScanner(conf)
> 	for i := 1; scanner.Scan(); i++ {
> 		paragraph := strings.TrimSpace(scanner.Text())
> 		if paragraph == "" { // пропускаем пустые строки
24c42,43
< 		log.Printf("%v\n", paragraph)
---
> 		log.Printf("process: %v\n", paragraph)
> 
29a49
> 
35,37c55,63
< 		i++
< 		file := fmt.Sprintf("/home/vitaly/Desktop/ivona/tts%04d.ogg", i) // files like 0001.ogg
< 		ioutil.WriteFile(file, r.Audio, 0644)
---
> 		file := filepath.Join(*dir, fmt.Sprintf(format, i))
> 		err = ioutil.WriteFile(file, r.Audio, 0644)
> 		if err != nil {
> 			log.Fatalln("writing result file:", err)
> 		}
> 	}
> 
> 	if err := scanner.Err(); err != nil {
> 		log.Fatalln("reading text file:", err)