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'use strict';
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var fs = require('fs');
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var path = require('path');
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var async = require('async');
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var Languages = module.exports;
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var languagesPath = path.join(__dirname, '../build/public/language');
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Languages.timeagoCodes = [
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'af', 'ar', 'az-short', 'az', 'bg', 'bs', 'ca', 'cs', 'cy', 'da', 'de-short', 'de', 'dv',
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'el', 'en-short', 'en', 'es-short', 'es', 'et', 'eu', 'fa-short', 'fa', 'fi', 'fr-short', 'fr',
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'gl', 'he', 'hr', 'hu', 'hy', 'id', 'is', 'it-short', 'it', 'ja', 'jv', 'ko', 'ky', 'lt', 'lv',
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'mk', 'nl', 'no', 'pl', 'pt-br-short', 'pt-br', 'pt-short', 'pt', 'ro', 'rs', 'ru', 'rw', 'si',
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'sk', 'sl', 'sr', 'sv', 'th', 'tr-short', 'tr', 'uk', 'uz', 'vi', 'zh-CN', 'zh-TW',
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];
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Languages.get = function (language, namespace, callback) {
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fs.readFile(path.join(languagesPath, language, namespace + '.json'), { encoding: 'utf-8' }, function (err, data) {
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if (err) {
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return callback(err);
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}
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try {
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data = JSON.parse(data) || {};
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} catch (e) {
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return callback(e);
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}
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callback(null, data);
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});
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};
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var codeCache = null;
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Languages.listCodes = function (callback) {
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if (codeCache && codeCache.length) {
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return callback(null, codeCache);
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}
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fs.readFile(path.join(languagesPath, 'metadata.json'), 'utf8', function (err, file) {
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if (err && err.code === 'ENOENT') {
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return callback(null, []);
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}
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if (err) {
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return callback(err);
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}
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var parsed;
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try {
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parsed = JSON.parse(file);
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} catch (e) {
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return callback(e);
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}
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var langs = parsed.languages;
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codeCache = langs;
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callback(null, langs);
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});
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};
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var listCache = null;
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Languages.list = function (callback) {
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if (listCache && listCache.length) {
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return callback(null, listCache);
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}
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Languages.listCodes(function (err, codes) {
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if (err) {
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return callback(err);
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}
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async.map(codes, function (folder, next) {
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var configPath = path.join(languagesPath, folder, 'language.json');
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fs.readFile(configPath, 'utf8', function (err, file) {
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if (err && err.code === 'ENOENT') {
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return next();
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}
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if (err) {
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return next(err);
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}
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var lang;
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try {
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lang = JSON.parse(file);
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} catch (e) {
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return next(e);
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}
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next(null, lang);
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});
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}, function (err, languages) {
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if (err) {
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return callback(err);
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}
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// filter out invalid ones
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languages = languages.filter(function (lang) {
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return lang && lang.code && lang.name && lang.dir;
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});
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listCache = languages;
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callback(null, languages);
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});
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});
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};
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