From 28cde487de4db28acd0152af999d317f5036f5ee Mon Sep 17 00:00:00 2001
From: Jack Allnutt <jack@allnutt.eu>
Date: Sun, 7 Jul 2013 23:37:30 +0100
Subject: [PATCH] Use async readdir in locales directory, reorder checking on
 locale files

---
 server/httphandler.js | 60 +++++++++++++++++++++++--------------------
 1 file changed, 32 insertions(+), 28 deletions(-)

diff --git a/server/httphandler.js b/server/httphandler.js
index e58a9de..16320f2 100644
--- a/server/httphandler.js
+++ b/server/httphandler.js
@@ -38,10 +38,12 @@ HttpHandler.prototype.serve = function (request, response) {
     // If the 'magic' translation is requested, figure out the best language to use from
     // the Accept-Language HTTP header. If nothing is suitible, serve an empty response,
     // Kiwi will just use the default en-gb strings baked in to it.
-    if (request.url === '/assets/locales/magic.json') {
-        return serveMagicLocale.call(this, request, response);
-    } else if (request.url.substr(0, 16) === '/assets/locales/') {
-        response.setHeader('Content-Language', request.url.substr(16, request.url.indexOf('.') - 16));
+    if (request.url.substr(0, 16) === '/assets/locales/') {
+        if (request.url === '/assets/locales/magic.json') {
+            return serveMagicLocale.call(this, request, response);
+        } else {
+            response.setHeader('Content-Language', request.url.substr(16, request.url.indexOf('.') - 16));
+        }
     }
 
     this.file_server.serve(request, response, function (err) {
@@ -53,40 +55,42 @@ HttpHandler.prototype.serve = function (request, response) {
 };
 
 var serveMagicLocale = function (request, response) {
-    var langs = [],
-        available = [],
-        i = 0;
     if (request.headers['accept-language']) {
         // Example: en-gb,en;q=0.5
         langs = request.headers['accept-language'].split(',');
-        available = (function () {
-            var files = [],
-                l = [];
-            files = fs.readdirSync('client/assets/locales');
+        fs.readdir('client/assets/locales', function (err, files) {
+            var available = [],
+                i = 0,
+                langs = [];
+
             files.forEach(function (file) {
-                if (file.slice(-5) === '.json') {
-                    l.push(file.slice(0, -5));
+                if (file.substr(-5) === '.json') {
+                    available.push(file.slice(0, -5));
                 }
             });
-            return l;
-        })();
-        for (i = 0; i < langs.length; i++) {
-            langs[i] = langs[i].split(';q=');
-            langs[i][1] = (typeof langs[i][1] === 'string') ? parseFloat(langs[i][1]) : 1.0;
-        }
-        langs.sort(function (a, b) {
-            return b[1] - a[1];
-        });
 
-        for (i = 0; i < langs.length; i++) {
-            if (langs[i][0] === '*') {
-                break;
-            } else if (_.contains(available, langs[i][0])) {
-                return this.file_server.serveFile('/assets/locales/' + langs[i][0] + '.json', 200, {Vary: 'Accept-Language', 'Content-Language': langs[i][0]}, request, response);
+            for (i = 0; i < langs.length; i++) {
+                langs[i]= langs[i].split(';q=');
+                langs[i][1] = (typeof langs[i][1] === 'string') ? parseFloat(langs[i][1]) : 1.0;
             }
-        }
+            langs.sort(function (a, b) {
+                return b[1] - a[1];
+            });
+            for (i = 0; i < langs.length; i++) {
+                if (langs[i][0] === '*') {
+                    break;
+                } else if (_.contains(available, langs[i][0])) {
+                    return this.file_server.serveFile('/assets/locales/' + langs[i][0] + '.json', 200, {Vary: 'Accept-Language', 'Content-Language': langs[i][0]}, request, response);
+                }
+            }
+            serveFallbackLocale(response);
+        });
+    } else {
+        serveFallbackLocale(response);
     }
+};
 
+var serveFallbackLocale = function (response) {
     response.writeHead(200, {
         'Vary': 'Accept-Language',
         'Content-Type': 'application/json',
-- 
2.25.1