/
language_list.go
112 lines (93 loc) · 2.22 KB
/
language_list.go
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package server
import (
"encoding/json"
"errors"
"io/ioutil"
"log"
"os"
"sort"
goi18n "github.com/nicksnyder/go-i18n/i18n"
"github.com/polyglottis/platform/i18n"
"github.com/polyglottis/platform/language"
)
const languageListFile = "language_list.json"
var languageList []language.Code
func init() {
err := loadLanguageList()
if err != nil {
log.Println("Failed to load language list:", err)
}
}
func saveLanguageList() error {
toSave, err := json.Marshal(languageList)
if err != nil {
return err
}
f, err := os.Create(languageListFile)
if err != nil {
return err
}
defer f.Close()
_, err = f.Write(toSave)
return err
}
func loadLanguageList() error {
f, err := ioutil.ReadFile(languageListFile)
if err != nil {
return err
}
var ll []language.Code
err = json.Unmarshal(f, &ll)
if err != nil {
return err
}
languageList = ll
return nil
}
func SetLanguageList(list []language.Code) error {
languageList = list
return saveLanguageList()
}
func getLanguageList() ([]language.Code, error) {
if languageList == nil {
return nil, errors.New("Language list not set")
}
return languageList, nil
}
func (args *TmplArgs) GetLanguageOptions() ([]*FormOption, error) {
return getSortedLanguageOptions(args.Localizer.Locale())
}
func (args *TmplArgs) GetLanguage(code language.Code) string {
return args.GetText(i18n.Key("lang_" + code))
}
func getSortedLanguageOptions(locale string) ([]*FormOption, error) {
options, err := getLanguageOptions(locale)
if err != nil {
return nil, err
}
sort.Sort(optionsByText(options))
return options, nil
}
func getLanguageOptions(locale string) ([]*FormOption, error) {
codes, err := getLanguageList()
if err != nil {
return nil, err
}
T, err := goi18n.Tfunc(locale)
if err != nil {
return nil, err
}
options := make([]*FormOption, len(codes)+1)
options[0] = PleaseSelect
for i, code := range codes {
options[i+1] = &FormOption{
Value: string(code),
Text: T("lang_" + string(code)),
}
}
return options, nil
}
type optionsByText []*FormOption
func (o optionsByText) Len() int { return len(o) }
func (o optionsByText) Swap(i, j int) { o[i], o[j] = o[j], o[i] }
func (o optionsByText) Less(i, j int) bool { return o[i].Text < o[j].Text }