'use strict';
import mejs from './mejs';
import {EN as en} from '../languages/en';
import {escapeHTML, isObjectEmpty} from '../utils/general';
/**
* Locale.
*
* This object manages translations with pluralization. Also deals with WordPress compatibility.
* @type {Object}
*/
const i18n = {lang: 'en', en: en};
/**
* Language setter/getter
*
* @param {*} args Can pass the language code and/or the translation strings as an Object
* @return {string}
*/
i18n.language = (...args) => {
if (args !== null && args !== undefined && args.length) {
if (typeof args[0] !== 'string') {
throw new TypeError('Language code must be a string value');
}
if (!/^[a-z]{2,3}((\-|_)[a-z]{2})?$/i.test(args[0])) {
throw new TypeError('Language code must have format 2-3 letters and. optionally, hyphen, underscore followed by 2 more letters');
}
i18n.lang = args[0];
// Check if language strings were added; otherwise, check the second argument or set to English as default
if (i18n[args[0]] === undefined) {
args[1] = args[1] !== null && args[1] !== undefined && typeof args[1] === 'object' ? args[1] : {};
i18n[args[0]] = !isObjectEmpty(args[1]) ? args[1] : en;
} else if (args[1] !== null && args[1] !== undefined && typeof args[1] === 'object') {
i18n[args[0]] = args[1];
}
}
return i18n.lang;
};
/**
* Translate a string in the language set up (or English by default)
*
* @param {string} message
* @param {number} pluralParam
* @return {string}
*/
i18n.t = (message, pluralParam = null) => {
if (typeof message === 'string' && message.length) {
let
str,
pluralForm
;
const language = i18n.language();
/**
* Modify string using algorithm to detect plural forms.
*
* @private
* @see http://stackoverflow.com/questions/1353408/messageformat-in-javascript-parameters-in-localized-ui-strings
* @param {String|String[]} input - String or array of strings to pick the plural form
* @param {Number} number - Number to determine the proper plural form
* @param {Number} form - Number of language family to apply plural form
* @return {String}
*/
const _plural = (input, number, form) => {
if (typeof input !== 'object' || typeof number !== 'number' || typeof form !== 'number') {
return input;
}
/**
*
* @return {Function[]}
* @private
*/
const _pluralForms = (() => {
return [
// 0: Chinese, Japanese, Korean, Persian, Turkish, Thai, Lao, Aymará,
// Tibetan, Chiga, Dzongkha, Indonesian, Lojban, Georgian, Kazakh, Khmer, Kyrgyz, Malay,
// Burmese, Yakut, Sundanese, Tatar, Uyghur, Vietnamese, Wolof
(...args) => args[1],
// 1: Danish, Dutch, English, Faroese, Frisian, German, Norwegian, Swedish, Estonian, Finnish,
// Hungarian, Basque, Greek, Hebrew, Italian, Portuguese, Spanish, Catalan, Afrikaans,
// Angika, Assamese, Asturian, Azerbaijani, Bulgarian, Bengali, Bodo, Aragonese, Dogri,
// Esperanto, Argentinean Spanish, Fulah, Friulian, Galician, Gujarati, Hausa,
// Hindi, Chhattisgarhi, Armenian, Interlingua, Greenlandic, Kannada, Kurdish, Letzeburgesch,
// Maithili, Malayalam, Mongolian, Manipuri, Marathi, Nahuatl, Neapolitan, Norwegian Bokmal,
// Nepali, Norwegian Nynorsk, Norwegian (old code), Northern Sotho, Oriya, Punjabi, Papiamento,
// Piemontese, Pashto, Romansh, Kinyarwanda, Santali, Scots, Sindhi, Northern Sami, Sinhala,
// Somali, Songhay, Albanian, Swahili, Tamil, Telugu, Turkmen, Urdu, Yoruba
(...args) => (args[0] === 1) ? args[1] : args[2],
// 2: French, Brazilian Portuguese, Acholi, Akan, Amharic, Mapudungun, Breton, Filipino,
// Gun, Lingala, Mauritian Creole, Malagasy, Maori, Occitan, Tajik, Tigrinya, Uzbek, Walloon
(...args) => (args[0] === 0 || args[0] === 1) ? args[1] : args[2],
// 3: Latvian
(...args) => {
if (args[0] % 10 === 1 && args[0] % 100 !== 11) {
return args[1];
} else if (args[0] !== 0) {
return args[2];
} else {
return args[3];
}
},
// 4: Scottish Gaelic
(...args) => {
if (args[0] === 1 || args[0] === 11) {
return args[1];
} else if (args[0] === 2 || args[0] === 12) {
return args[2];
} else if (args[0] > 2 && args[0] < 20) {
return args[3];
} else {
return args[4];
}
},
// 5: Romanian
(...args) => {
if (args[0] === 1) {
return args[1];
} else if (args[0] === 0 || (args[0] % 100 > 0 && args[0] % 100 < 20)) {
return args[2];
} else {
return args[3];
}
},
// 6: Lithuanian
(...args) => {
if (args[0] % 10 === 1 && args[0] % 100 !== 11) {
return args[1];
} else if (args[0] % 10 >= 2 && (args[0] % 100 < 10 || args[0] % 100 >= 20)) {
return args[2];
} else {
return [3];
}
},
// 7: Belarusian, Bosnian, Croatian, Serbian, Russian, Ukrainian
(...args) => {
if (args[0] % 10 === 1 && args[0] % 100 !== 11) {
return args[1];
} else if (args[0] % 10 >= 2 && args[0] % 10 <= 4 && (args[0] % 100 < 10 || args[0] % 100 >= 20)) {
return args[2];
} else {
return args[3];
}
},
// 8: Slovak, Czech
(...args) => {
if (args[0] === 1) {
return args[1];
} else if (args[0] >= 2 && args[0] <= 4) {
return args[2];
} else {
return args[3];
}
},
// 9: Polish
(...args) => {
if (args[0] === 1) {
return args[1];
} else if (args[0] % 10 >= 2 && args[0] % 10 <= 4 && (args[0] % 100 < 10 || args[0] % 100 >= 20)) {
return args[2];
} else {
return args[3];
}
},
// 10: Slovenian
(...args) => {
if (args[0] % 100 === 1) {
return args[2];
} else if (args[0] % 100 === 2) {
return args[3];
} else if (args[0] % 100 === 3 || args[0] % 100 === 4) {
return args[4];
} else {
return args[1];
}
},
// 11: Irish Gaelic
(...args) => {
if (args[0] === 1) {
return args[1];
} else if (args[0] === 2) {
return args[2];
} else if (args[0] > 2 && args[0] < 7) {
return args[3];
} else if (args[0] > 6 && args[0] < 11) {
return args[4];
} else {
return args[5];
}
},
// 12: Arabic
(...args) => {
if (args[0] === 0) {
return args[1];
} else if (args[0] === 1) {
return args[2];
} else if (args[0] === 2) {
return args[3];
} else if (args[0] % 100 >= 3 && args[0] % 100 <= 10) {
return args[4];
} else if (args[0] % 100 >= 11) {
return args[5];
} else {
return args[6];
}
},
// 13: Maltese
(...args) => {
if (args[0] === 1) {
return args[1];
} else if (args[0] === 0 || (args[0] % 100 > 1 && args[0] % 100 < 11)) {
return args[2];
} else if (args[0] % 100 > 10 && args[0] % 100 < 20) {
return args[3];
} else {
return args[4];
}
},
// 14: Macedonian
(...args) => {
if (args[0] % 10 === 1) {
return args[1];
} else if (args[0] % 10 === 2) {
return args[2];
} else {
return args[3];
}
},
// 15: Icelandic
(...args) => {
return (args[0] !== 11 && args[0] % 10 === 1) ? args[1] : args[2];
},
// New additions
// 16: Kashubian
// In https://developer.mozilla.org/en-US/docs/Mozilla/Localization/Localization_and_Plurals#List_of__pluralRules
// Breton is listed as #16 but in the Localization Guide it belongs to the group 2
(...args) => {
if (args[0] === 1) {
return args[1];
} else if (args[0] % 10 >= 2 && args[0] % 10 <= 4 && (args[0] % 100 < 10 ||
args[0] % 100 >= 20)) {
return args[2];
} else {
return args[3];
}
},
// 17: Welsh
(...args) => {
if (args[0] === 1) {
return args[1];
} else if (args[0] === 2) {
return args[2];
} else if (args[0] !== 8 && args[0] !== 11) {
return args[3];
} else {
return args[4];
}
},
// 18: Javanese
(...args) => {
return (args[0] === 0) ? args[1] : args[2];
},
// 19: Cornish
(...args) => {
if (args[0] === 1) {
return args[1];
} else if (args[0] === 2) {
return args[2];
} else if (args[0] === 3) {
return args[3];
} else {
return args[4];
}
},
// 20: Mandinka
(...args) => {
if (args[0] === 0) {
return args[1];
} else if (args[0] === 1) {
return args[2];
} else {
return args[3];
}
}
];
})();
// Perform plural form or return original text
return _pluralForms[form].apply(null, [number].concat(input));
};
// Fetch the localized version of the string
if (i18n[language] !== undefined) {
str = i18n[language][message];
if (pluralParam !== null && typeof pluralParam === 'number') {
pluralForm = i18n[language]['mejs.plural-form'];
str = _plural.apply(null, [str, pluralParam, pluralForm]);
}
}
// Fallback to default language if requested uid is not translated
if (!str && i18n.en) {
str = i18n.en[message];
if (pluralParam !== null && typeof pluralParam === 'number') {
pluralForm = i18n.en['mejs.plural-form'];
str = _plural.apply(null, [str, pluralParam, pluralForm]);
}
}
// As a last resort, use the requested uid, to mimic original behavior of i18n utils
// (in which uid was the english text)
str = str || message;
// Replace token
if (pluralParam !== null && typeof pluralParam === 'number') {
str = str.replace('%1', pluralParam);
}
return escapeHTML(str);
}
return message;
};
mejs.i18n = i18n;
// `i18n` compatibility workflow with WordPress
if (typeof mejsL10n !== 'undefined') {
mejs.i18n.language(mejsL10n.language, mejsL10n.strings);
}
export default i18n;