Merge pull request #1297 from marcelklehr/migrate-to-html10n

Migrate to html10n and allow plugin l10n

src/node/hooks/i18n.js

@@ -2,35 +2,102 @@ var languages = require('languages4translatewiki')
   , fs = require('fs')
   , path = require('path')
   , express = require('express')
+  , _ = require('underscore')
+  , npm = require('npm')
+  , plugins = require('ep_etherpad-lite/static/js/pluginfw/plugins.js').plugins
+;
 
-var localesPath = __dirname+"/../../locales";
 
-// Serve English strings directly with /locales.ini
-var localeIndex = fs.readFileSync(localesPath+'/en.ini')+'\r\n';
+// returns all existing messages merged together and grouped by langcode
+// {es: {"foo": "string"}, en:...}
+function getAllLocales() {
+  var locales2paths = {};
 
-exports.availableLangs = {'en': {'nativeName': 'English', 'direction': 'ltr'}};
+  // Puts the paths of all locale files contained in a given directory
+  // into `locales2paths` (files from various dirs are grouped by lang code)
+  // (only json files with valid language code as name)
+  function extractLangs(dir) {
+    if(!fs.existsSync(dir)) return;
+    var stat = fs.lstatSync(dir);
+    if (!stat.isDirectory() || stat.isSymbolicLink()) return;
 
-fs.readdir(localesPath, function(er, files) {
-  files.forEach(function(locale) {
-    var ext = path.extname(locale);
-    locale = path.basename(locale, ext).toLowerCase();
-    if(locale == 'en' || ext != '.ini') return;
+    fs.readdirSync(dir).forEach(function(file) {
+      file = path.resolve(dir, file);
+      stat = fs.lstatSync(file);
+      if (stat.isDirectory() || stat.isSymbolicLink()) return;
 
-    // build locale index
-    localeIndex += '['+locale+']\r\n@import url(locales/'+locale+'.ini)\r\n'
-    
-    // add info language {nativeName, direction} to availableLangs
-    exports.availableLangs[locale]=languages.getLanguageInfo(locale);
-  })
-})
+      var ext = path.extname(file)
+      , locale = path.basename(file, ext).toLowerCase();
+
+      if ((ext == '.json') && languages.isValid(locale)) {
+        if(!locales2paths[locale]) locales2paths[locale] = [];
+        locales2paths[locale].push(file);
+      }
+    });
+  }
+
+  //add core supported languages first
+  extractLangs(npm.root+"/ep_etherpad-lite/locales");
+  
+  //add plugins languages (if any)
+  for(var pluginName in plugins) extractLangs(path.join(npm.root, pluginName, 'locales'));
+
+  // Build a locale index (merge all locale data)
+  var locales = {}
+  _.each (locales2paths, function(files, langcode) {
+    locales[langcode]={};
+
+    files.forEach(function(file) {
+     var fileContents = JSON.parse(fs.readFileSync(file,'utf8'));
+      _.extend(locales[langcode], fileContents);
+    });
+  });
+
+  return locales;
+}
+
+// returns a hash of all available languages availables with nativeName and direction
+// e.g. { es: {nativeName: "español", direction: "ltr"}, ... }
+function getAvailableLangs(locales) {
+  var result = {};
+  _.each(_.keys(locales), function(langcode) {
+    result[langcode] = languages.getLanguageInfo(langcode);
+  });
+  return result;
+}
+
+// returns locale index that will be served in /locales.json
+var generateLocaleIndex = function (locales) {
+  var result = _.clone(locales) // keep English strings
+  _.each(_.keys(locales), function(langcode) {
+    if (langcode != 'en') result[langcode]='locales/'+langcode+'.json';
+  });
+  return JSON.stringify(result);
+}
 
 
 exports.expressCreateServer = function(n, args) {
 
-  args.app.use('/locales', express.static(localesPath));
+  //regenerate locales on server restart
+  var locales = getAllLocales();
+  var localeIndex = generateLocaleIndex(locales);
+  exports.availableLangs = getAvailableLangs(locales);
+
+  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=utf-8');
+      res.send('{"'+locale+'":'+JSON.stringify(locales[locale])+'}');
+    } else {
+      res.send(404, 'Language not available');
+    }
+  })
   
-  args.app.get('/locales.ini', function(req, res) {
+  args.app.get('/locales.json', function(req, res) {
+    res.setHeader('Content-Type', 'application/json; charset=utf-8');
     res.send(localeIndex);
   })
   
 }
+