MultiLang: Support multiple languages

2018-03-18 21:30:04 +01:00
parent ca51d2fc08
commit 3b14f248ed
11 changed files with 200 additions and 52 deletions
--- a/VAR.Focus.Web/Code/MultiLang.cs
+++ b/VAR.Focus.Web/Code/MultiLang.cs
@@ -0,0 +1,82 @@
+using System.Collections.Generic;
+using System.IO;
+using System.Linq;
+using System.Reflection;
+using System.Web;
+using VAR.Json;
+
+namespace VAR.Focus.Web.Code
+{
+    public class MultiLang
+    {
+        private static string GetLocalPath(string path)
+        {
+            string currentDir = Path.GetDirectoryName((new System.Uri(Assembly.GetExecutingAssembly().CodeBase)).AbsolutePath);
+            return string.Format("{0}/{1}", Directory.GetParent(currentDir), path);
+        }
+
+        private static Dictionary<string, Dictionary<string, object>> _literals = null;
+
+        private static void InitializeLiterals()
+        {
+            _literals = new Dictionary<string, Dictionary<string, object>>();
+
+            JsonParser jsonParser = new JsonParser();
+            foreach (string lang in new string[] { "en", "es" })
+            {
+                string filePath = GetLocalPath(string.Format("Resources/Literals.{0}.json", lang));
+                if (File.Exists(filePath) == false) { continue; }
+
+                string strJsonLiteralsLanguage = File.ReadAllText(filePath);
+                object result = jsonParser.Parse(strJsonLiteralsLanguage);
+                _literals.Add(lang, result as Dictionary<string, object>);
+            }
+        }
+
+        private const string _defaultLanguage = "en";
+
+        private static string GetUserLanguage()
+        {
+            HttpContext ctx = HttpContext.Current;
+            if(ctx != null)
+            {
+                if(ctx.Items["UserLang"] != null)
+                {
+                    return (string)ctx.Items["UserLang"];
+                }
+
+                IEnumerable<string> userLanguages = ctx.Request.UserLanguages
+                    .Select(lang =>
+                    {
+                        if (lang.Contains(";"))
+                        {
+                            lang = lang.Split(';')[0];
+                        }
+                        if (lang.Contains("-"))
+                        {
+                            lang = lang.Split('-')[0];
+                        }
+                        return lang.ToLower();
+                    })
+                    .Where(lang => _literals.ContainsKey(lang));
+                string userLang = userLanguages.FirstOrDefault() ?? _defaultLanguage;
+
+                ctx.Items["UserLang"] = userLang;
+                return userLang;
+            }
+            return _defaultLanguage;
+        }
+
+        public static string GetLiteral(string resource, string culture = null)
+        {
+            if (_literals == null) { InitializeLiterals(); }
+            if (culture == null) { culture = GetUserLanguage(); }
+
+            if (_literals == null || _literals.ContainsKey(culture) == false) { return resource; }
+            Dictionary<string, object> _literalCurrentCulture = _literals[culture];
+
+            if (_literalCurrentCulture == null || _literalCurrentCulture.ContainsKey(resource) == false) { return resource; }
+            return (_literalCurrentCulture[resource] as string) ?? resource;
+        }
+    }
+}