Improve MimeTypes.GetExtension()

Author: mythz

src/ServiceStack.Text/HttpUtils.cs

@@ -12,7 +12,12 @@
 
 namespace ServiceStack
 {
-    public static class HttpUtils
+    public static partial class HttpUtils
+    {
+        
+    }
+    
+    public static partial class HttpUtils
     {
         public static string UserAgent = "ServiceStack.Text";
 
@@ -781,10 +786,8 @@ public static Stream SendStreamToUrl(this string url, string method = null,
 
             if (requestBody != null)
             {
-                using (var req = PclExport.Instance.GetRequestStream(webReq))
-                {
-                    requestBody.CopyTo(req);
-                }
+                using var req = PclExport.Instance.GetRequestStream(webReq);
+                requestBody.CopyTo(req);
             }
 
             var webRes = PclExport.Instance.GetResponse(webReq);
@@ -1431,8 +1434,8 @@ public static string GetExtension(string mimeType)
             }
 
             var parts = mimeType.Split('/');
-            if (parts.Length == 1) return "." + parts[0];
-            if (parts.Length == 2) return "." + parts[1];
+            if (parts.Length == 1) return "." + parts[0].LeftPart('+').LeftPart(';');
+            if (parts.Length == 2) return "." + parts[1].LeftPart('+').LeftPart(';');
 
             throw new NotSupportedException("Unknown mimeType: " + mimeType);
         }

tests/ServiceStack.Text.Tests/HttpUtilsTests.cs

@@ -64,5 +64,14 @@ public void Can_SetHashParam()
             Assert.That("http://example.com#s=rf/f=1".SetHashParam("f", "2"), Is.EqualTo("http://example.com#s=rf/f=2"));
             Assert.That("http://example.com#ab=0".SetHashParam("a", "1"), Is.EqualTo("http://example.com#ab=0/a=1"));
         }
+
+        [Test]
+        public void Can_get_MimeType_file_extension()
+        {
+            Assert.That(MimeTypes.GetExtension(MimeTypes.Html), Is.EqualTo(".html"));
+            Assert.That(MimeTypes.GetExtension(MimeTypes.HtmlUtf8), Is.EqualTo(".html"));
+            Assert.That(MimeTypes.GetExtension(MimeTypes.ImagePng), Is.EqualTo(".png"));
+            Assert.That(MimeTypes.GetExtension(MimeTypes.ImageSvg), Is.EqualTo(".svg"));
+        }
     }
 }