support for json in i18n

src/node/hooks/i18n.js

@@ -2,35 +2,124 @@ var languages = require('languages4translatewiki')
   , fs = require('fs')
   , path = require('path')
   , express = require('express')
+  , _ = require('underscore');
 
-var localesPath = __dirname+"/../../locales";
+/*
+* PRIVATE
+*/
 
-// Serve English strings directly with /locales.ini
+// locales will store all locales ini files merged (core+plugins) in RAM
-var localeIndex = fs.readFileSync(localesPath+'/en.ini')+'\r\n';
+var locales = {};
 
-exports.availableLangs = {'en': {'nativeName': 'English', 'direction': 'ltr'}};
+//explore recursive subdirectories from root and execute callback
+//don't explore symbolic links
+var exploreDir = function (root, callback) {
+  var stat = fs.lstatSync(root);
+  if (stat.isDirectory() && !stat.isSymbolicLink()) {
+    var names = fs.readdirSync(root),
+    subdirs = [],
+    files = [];
+    names.forEach (function(file) {
+      file = path.resolve(root,file);
+      stat = fs.lstatSync(file);
+      if (stat.isDirectory() && !stat.isSymbolicLink()) {
+        subdirs.push(file);
+      } else {
+        files.push(file);
+      }
+    });
+    callback(root, subdirs, files);
+    subdirs.forEach(function (d) {
+      exploreDir(d, callback);
+    });
+  }
+};
 
-fs.readdir(localesPath, function(er, files) {
+// return all files languages absolute path group by langcode
-  files.forEach(function(locale) {
+// {es: [pathcore, pathplugin1...], en:...}
-    var ext = path.extname(locale);
+var getAllLocalesPaths = function () {
-    locale = path.basename(locale, ext).toLowerCase();
+  var result = {};
-    if(locale == 'en' || ext != '.ini') return;
 
-    // build locale index
+  //extract only files paths with name is a supported language code and have json extension
-    localeIndex += '['+locale+']\r\n@import url(locales/'+locale+'.ini)\r\n'
+  var extractLangs = function (root, subdirs, files) {
+    _.each(files, function(file) {
+      var ext = path.extname(file),
+      locale = path.basename(file, ext).toLowerCase();
+      if ((ext == '.json') && languages.isValid(locale)) {
+        if (!(_.has(result, locale))) result[locale] = [];
+        result[locale].push(file);
+      }
+    });
+  }
 
-    // add info language {nativeName, direction} to availableLangs
+  //add core supported languages first
-    exports.availableLangs[locale]=languages.getLanguageInfo(locale);
+  var root = path.resolve(__dirname+"/../../locales");
-  })
+  exploreDir (root, extractLangs);
-})
+  //add plugins languages (if any)
+  root = path.resolve(__dirname+"/../../../node_modules");
+  exploreDir (root, extractLangs);
 
+  return result;
+}
+
+//save in locales all json files merged by language code
+var getAllLocales = function () {
+  _.each (getAllLocalesPaths(), function(files, langcode) {
+    locales[langcode]={}
+    _.each (files, function(file) {
+      _.extend(locales[langcode], JSON.parse(fs.readFileSync(file,'utf8'))[langcode]);
+    });
+  });
+}
+
+//return all languages availables with nativeName and direction
+//{es: {nativeName: "español", direction: "ltr"},...}
+var getAvailableLangs = function () {
+  var result = {};
+  if (_.isEmpty(locales)) getAllLocales();
+  _.each(_.keys(locales), function(langcode) {
+    result[langcode]=languages.getLanguageInfo(langcode);
+  });
+  return result;
+}
+
+//return locale index that will be served in /locales.json
+var generateLocaleIndex = function () {
+  if (_.isEmpty(locales)) getAllLocales();
+  var result = _.clone(locales);
+  _.each(_.keys(locales), function(langcode) {
+    if (langcode != 'en') result[langcode]='/locales/'+langcode+'.json';
+  });
+  return JSON.stringify(result);
+}
+
+
+/*
+* PUBLIC
+*/
 
 exports.expressCreateServer = function(n, args) {
 
-  args.app.use('/locales', express.static(localesPath));
+  //regenerate locales when server restart
+  locales = {};
+  var localeIndex = generateLocaleIndex();
+  exports.availableLangs = getAvailableLangs();
 
-  args.app.get('/locales.ini', function(req, res) {
+  args.app.get ('/locales/:locale', function(req, res) {
+    //works with /locale/en and /locale/en.json requests
+    var locale = req.params.locale.split('.')[0];
+    if (exports.availableLangs.hasOwnProperty(locale)) {
+      res.setHeader('Content-Type', 'application/json; charset=utf8');
+     res.send('{"'+locale+'":'+JSON.stringify(locales[locale])+'}');
+    } else {
+      res.send(404, 'Language not available');
+    }
+  })
+  
+  args.app.get('/locales.json', function(req, res) {
+    res.setHeader('Content-Type', 'application/json; charset=utf8');
     res.send(localeIndex);
   })
   
 }
+