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main.go
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main.go
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package main
import (
"fmt"
"log"
"os"
"path"
"strconv"
"strings"
"github.com/urfave/cli"
ntw "moul.io/number-to-words"
)
func main() {
app := cli.NewApp()
app.Name = path.Base(os.Args[0])
app.Author = "Manfred Touron"
app.Email = "https://moul.io/number-to-words"
app.Version = ntw.Version
app.Usage = "number to number"
// FIXME: enable autocomplete
// append language list to help
cli.AppHelpTemplate = fmt.Sprintf("%s\nAVAILABLE LANGUAGES:\n", cli.AppHelpTemplate)
for _, lang := range ntw.Languages {
cli.AppHelpTemplate = fmt.Sprintf("%s %s\n", cli.AppHelpTemplate, lang.HelpText())
}
cli.AppHelpTemplate += "\n"
app.Flags = []cli.Flag{
cli.StringFlag{
Name: "lang, l",
EnvVar: "NTW_LANGUAGE",
Usage: "Set language",
Value: "en",
},
}
app.Action = convert
if err := app.Run(os.Args); err != nil {
log.Printf("error: %v", err)
os.Exit(1)
}
}
func convert(c *cli.Context) error {
if len(c.Args()) != 1 {
return fmt.Errorf("usage: number-to-words [--lang=<lang>] <number>")
}
inputStr := c.Args()[0]
input, err := strconv.Atoi(inputStr)
if err != nil {
return err
}
var outputs []string
lang := c.String("lang")
if lang == "all" {
for _, language := range ntw.Languages {
outputs = append(outputs, language.IntegerToWords(input))
}
} else {
language := ntw.Languages.Lookup(lang)
if language == nil {
return fmt.Errorf("unknown language: %s", lang)
}
outputs = append(outputs, language.IntegerToWords(input))
}
fmt.Println(strings.Join(outputs, "\n"))
return nil
}