github.com/turgay/mattermost-server@v5.3.2-0.20181002173352-2945e8a2b0ce+incompatible/utils/i18n.go (about) 1 // Copyright (c) 2015-present Mattermost, Inc. All Rights Reserved. 2 // See License.txt for license information. 3 4 package utils 5 6 import ( 7 "fmt" 8 "io/ioutil" 9 "net/http" 10 "path/filepath" 11 "strings" 12 13 "github.com/mattermost/mattermost-server/mlog" 14 "github.com/mattermost/mattermost-server/model" 15 "github.com/nicksnyder/go-i18n/i18n" 16 ) 17 18 var T i18n.TranslateFunc 19 var TDefault i18n.TranslateFunc 20 var locales map[string]string = make(map[string]string) 21 var settings model.LocalizationSettings 22 23 // this functions loads translations from filesystem 24 // and assign english while loading server config 25 func TranslationsPreInit() error { 26 // Set T even if we fail to load the translations. Lots of shutdown handling code will 27 // segfault trying to handle the error, and the untranslated IDs are strictly better. 28 T = TfuncWithFallback("en") 29 TDefault = TfuncWithFallback("en") 30 return InitTranslationsWithDir("i18n") 31 } 32 33 func InitTranslations(localizationSettings model.LocalizationSettings) error { 34 settings = localizationSettings 35 36 var err error 37 T, err = GetTranslationsBySystemLocale() 38 return err 39 } 40 41 func InitTranslationsWithDir(dir string) error { 42 i18nDirectory, found := FindDir(dir) 43 if !found { 44 return fmt.Errorf("Unable to find i18n directory") 45 } 46 47 files, _ := ioutil.ReadDir(i18nDirectory) 48 for _, f := range files { 49 if filepath.Ext(f.Name()) == ".json" { 50 filename := f.Name() 51 locales[strings.Split(filename, ".")[0]] = filepath.Join(i18nDirectory, filename) 52 53 if err := i18n.LoadTranslationFile(filepath.Join(i18nDirectory, filename)); err != nil { 54 return err 55 } 56 } 57 } 58 59 return nil 60 } 61 62 func GetTranslationsBySystemLocale() (i18n.TranslateFunc, error) { 63 locale := *settings.DefaultServerLocale 64 if _, ok := locales[locale]; !ok { 65 mlog.Error(fmt.Sprintf("Failed to load system translations for '%v' attempting to fall back to '%v'", locale, model.DEFAULT_LOCALE)) 66 locale = model.DEFAULT_LOCALE 67 } 68 69 if locales[locale] == "" { 70 return nil, fmt.Errorf("Failed to load system translations for '%v'", model.DEFAULT_LOCALE) 71 } 72 73 translations := TfuncWithFallback(locale) 74 if translations == nil { 75 return nil, fmt.Errorf("Failed to load system translations") 76 } 77 78 mlog.Info(fmt.Sprintf("Loaded system translations for '%v' from '%v'", locale, locales[locale])) 79 return translations, nil 80 } 81 82 func GetUserTranslations(locale string) i18n.TranslateFunc { 83 if _, ok := locales[locale]; !ok { 84 locale = model.DEFAULT_LOCALE 85 } 86 87 translations := TfuncWithFallback(locale) 88 return translations 89 } 90 91 func GetTranslationsAndLocale(w http.ResponseWriter, r *http.Request) (i18n.TranslateFunc, string) { 92 // This is for checking against locales like pt_BR or zn_CN 93 headerLocaleFull := strings.Split(r.Header.Get("Accept-Language"), ",")[0] 94 // This is for checking against locales like en, es 95 headerLocale := strings.Split(strings.Split(r.Header.Get("Accept-Language"), ",")[0], "-")[0] 96 defaultLocale := *settings.DefaultClientLocale 97 if locales[headerLocaleFull] != "" { 98 translations := TfuncWithFallback(headerLocaleFull) 99 return translations, headerLocaleFull 100 } else if locales[headerLocale] != "" { 101 translations := TfuncWithFallback(headerLocale) 102 return translations, headerLocale 103 } else if locales[defaultLocale] != "" { 104 translations := TfuncWithFallback(defaultLocale) 105 return translations, headerLocale 106 } 107 108 translations := TfuncWithFallback(model.DEFAULT_LOCALE) 109 return translations, model.DEFAULT_LOCALE 110 } 111 112 func GetSupportedLocales() map[string]string { 113 return locales 114 } 115 116 func TfuncWithFallback(pref string) i18n.TranslateFunc { 117 t, _ := i18n.Tfunc(pref) 118 return func(translationID string, args ...interface{}) string { 119 if translated := t(translationID, args...); translated != translationID { 120 return translated 121 } 122 123 t, _ := i18n.Tfunc(model.DEFAULT_LOCALE) 124 return t(translationID, args...) 125 } 126 }