新增：URL分析(Host/Path/File/Query分拆)

Author: fengyunhai

Qiniu/Fusion/Model/UrlHelper.cs

@@ -31,5 +31,26 @@ public static string GetNormalUrl(string _url)
             return m.Value;
         }
 
+        public static void UrlSplit(string url, out string host, out string path, out string file, out string query)
+        {
+            int start = 0;
+
+            Regex regHost = new Regex(@"(http|https):\/\/[\w\-_]+(\.[\w\-_]+)+");
+            host = regHost.Match(url, start).Value;
+            start += host.Length;
+
+            Regex regPath = new Regex(@"(/(\w|\-)*)+/");
+            path = regPath.Match(url, start).Value;
+            if(string.IsNullOrEmpty(path))
+            {
+                path = "/";
+            }
+            start += path.Length;
+
+            int index = url.IndexOf('?', start);
+            file = url.Substring(start, index - start);
+
+            query = url.Substring(index);
+        }
     }
 }