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urtrator/translator/translator.go
2018-11-10 20:58:15 +05:00

147 lines
4.2 KiB
Go

// URTator - Urban Terror server browser and game launcher, written in
// Go.
//
// Copyright (c) 2016, Stanslav N. a.k.a pztrn (or p0z1tr0n)
// All rights reserved.
//
// Licensed under Terms and Conditions of GNU General Public License
// version 3 or any higher.
// ToDo: put full text of license here.
// This is translator - package which translates everything in languages
// other than en_US.
// Available only on unixes for now, Windows version in ToDo.
package translator
import (
// stdlib
"encoding/json"
"fmt"
"io/ioutil"
"path/filepath"
"strings"
)
type Translator struct {
// Accepted languages.
AcceptedLanguages map[string]string
// Currently active language.
Language string
// Translations.
translations map[string]map[string]string
// Path to translations files.
translationsPath string
}
// Formats string from passed map.
// We expect replaceable strings to be named as:
//
// {{ VAR }}
//
// We will change whole "{{ VAR }}" to params["VAR"] value. E.g.:
//
// data = "Version {{ version }}"
// map = map[string]string{"version": "0.1"}
//
// will be formatted as:
//
// result = "Version 0.1"
//
// Also note that we will replace ALL occurences of "{{ VAR }}" within string!
// All untranslated variables will not be touched at all.
func (t *Translator) formatFromMap(data string, params map[string]string) string {
new_data := data
for k, v := range params {
new_data = strings.Replace(new_data, "{{ "+k+" }}", v, -1)
}
return new_data
}
// Translator initialization.
func (t *Translator) Initialize() {
fmt.Println("Initializing translations...")
t.AcceptedLanguages = map[string]string{
"System's default language": "default",
"English": "en_US",
"French": "fr_FR",
"Russian": "ru_RU",
}
// Initialize storages.
t.translations = make(map[string]map[string]string)
t.translationsPath = ""
// Getting locale name from environment.
// ToDo: Windows compatability. Possible reference:
// https://github.com/cloudfoundry-attic/jibber_jabber/blob/master/jibber_jabber_windows.go
t.detectLanguage()
fmt.Println("Using translations for '" + t.Language + "'")
err := t.detectTranslationsDirectory()
if err == nil {
t.loadTranslations()
} else {
fmt.Println("Skipping translations loading due to missing translations directory.")
}
}
// Load translations into memory.
func (t *Translator) loadTranslations() {
fmt.Println("Loading translations for language " + t.Language)
fmt.Println("Translations directory: " + t.translationsPath)
t.translations[t.Language] = make(map[string]string)
if t.translationsPath != "" {
// Check if language was selected in options dialog. In that
// case it will overwrite autodetected language.
var translationsDir string = ""
if cfg.Cfg["/general/language"] != "" {
translationsDir = filepath.Join(t.translationsPath, cfg.Cfg["/general/language"])
t.Language = cfg.Cfg["/general/language"]
} else {
translationsDir = filepath.Join(t.translationsPath, t.Language)
}
files_list, _ := ioutil.ReadDir(translationsDir)
if len(files_list) > 0 {
for i := range files_list {
// Read file.
file_path := filepath.Join(translationsDir, files_list[i].Name())
file_data, _ := ioutil.ReadFile(file_path)
var trans map[string]string
json.Unmarshal(file_data, &trans)
// Assign parsed translations to language code.
t.translations[t.Language] = trans
}
}
}
}
// Actual translation function.
// Parameters:
// * str - raw string from source which we will try to translate.
// * params - map[string]string with parameters to replace in string.
//
// If string wasn't found in loaded translations for current language
// we will use English as fallback.
// Translates passed data from loaded translations file.
// Returns passed data without changes if translation wasn't found.
func (t *Translator) Translate(data string, params map[string]string) string {
val, ok := t.translations[t.Language][data]
if !ok {
if params != nil && len(params) > 0 {
return t.formatFromMap(data, params)
} else {
return data
}
}
if params != nil && len(params) > 0 {
return t.formatFromMap(val, params)
}
return val
}