add support for static catalog (fixes #262)

README.md

@@ -205,7 +205,13 @@ i18n.configure({
     // Downcase locale when passed on queryParam; e.g. lang=en-US becomes
     // en-us.  When set to false, the queryParam value will be used as passed;
     // e.g. lang=en-US remains en-US.
-    preserveLegacyCase: true
+    preserveLegacyCase: true,
+
+    // set the language catalog statically
+    // also overrides locales
+    staticCatalog: {
+      de: { /* require('de.json') */ },
+    }
 });
 ```
 

i18n.js

@@ -147,14 +147,18 @@ module.exports = (function() {
       true : opt.preserveLegacyCase;
 
     // when missing locales we try to guess that from directory
-    opt.locales = opt.locales || guessLocales(directory);
+    opt.locales = opt.staticCatalog ? Object.keys(opt.staticCatalog) : opt.locales || guessLocales(directory);
 
     // implicitly read all locales
     if (Array.isArray(opt.locales)) {
 
-      opt.locales.forEach(function(l) {
-        read(l);
-      });
+      if (opt.staticCatalog) {
+        locales = opt.staticCatalog;
+      } else {
+        opt.locales.forEach(function(l) {
+          read(l);
+        });
+      }
 
       // auto reload locale files when changed
       if (autoReload) {

test/i18n.configureStaticCatalog.js

@@ -0,0 +1,32 @@
+var i18n = require('../i18n'),
+  should = require("should");
+
+describe('staticCatalog configuration', function() {
+
+  it('should take locales from static catalog if set', function(done) {
+    i18n.configure({
+      staticCatalog: {
+        'en': {}
+      }
+    });
+
+    var expected = ['en'].sort();
+    should.deepEqual(i18n.getLocales(), expected);
+
+    done();
+  });
+
+  it('should use static locale definitions from static catalog if set', function(done) {
+    i18n.configure({
+      staticCatalog: {
+        'en': {}
+      }
+    });
+
+    var expected = new Object();
+    should.deepEqual(i18n.getCatalog('en'), expected);
+
+    done();
+  });
+
+});