Add SetHashParam and test

Author: mythz

src/ServiceStack.Text/HttpUtils.cs

@@ -68,6 +68,28 @@ public static string AddHashParam(this string url, string key, string val)
             return url + prefix + key + "=" + val.UrlEncode();
         }
 
+        public static string SetHashParam(this string url, string key, string val)
+        {
+            if (string.IsNullOrEmpty(url)) return null;
+            var hPos = url.IndexOf('#');
+            if (hPos != -1)
+            {
+                var existingKeyPos = url.IndexOf(key, hPos, PclExport.Instance.InvariantComparison);
+                if (existingKeyPos != -1)
+                {
+                    var endPos = url.IndexOf('/', existingKeyPos);
+                    if (endPos == -1) endPos = url.Length;
+
+                    var newUrl = url.Substring(0, existingKeyPos + key.Length + 1)
+                        + val.UrlEncode()
+                        + url.Substring(endPos);
+                    return newUrl;
+                }
+            }
+            var prefix = url.IndexOf('#') == -1 ? "#" : "/";
+            return url + prefix + key + "=" + val.UrlEncode();
+        }
+
         public static string GetJsonFromUrl(this string url,
             Action<HttpWebRequest> requestFilter = null, Action<HttpWebResponse> responseFilter = null)
         {

tests/ServiceStack.Text.Tests/HttpUtilsTests.cs

@@ -0,0 +1,44 @@
+using NUnit.Framework;
+
+namespace ServiceStack.Text.Tests
+{
+    [TestFixture]
+    public class HttpUtilsTests
+    {
+        [Test]
+        public void Can_AddQueryParam()
+        {
+            Assert.That("http://example.com".AddQueryParam("f", "1"), Is.EqualTo("http://example.com?f=1"));
+            Assert.That("http://example.com?s=0".AddQueryParam("f", "1"), Is.EqualTo("http://example.com?s=0&f=1"));
+            Assert.That("http://example.com?f=1".AddQueryParam("f", "2"), Is.EqualTo("http://example.com?f=1&f=2"));
+            Assert.That("http://example.com?s=0&f=1&s=1".AddQueryParam("f", "2"), Is.EqualTo("http://example.com?s=0&f=1&s=1&f=2"));
+        }
+
+        [Test]
+        public void Can_SetQueryParam()
+        {
+            Assert.That("http://example.com".SetQueryParam("f", "1"), Is.EqualTo("http://example.com?f=1"));
+            Assert.That("http://example.com?s=0".SetQueryParam("f", "1"), Is.EqualTo("http://example.com?s=0&f=1"));
+            Assert.That("http://example.com?f=1".SetQueryParam("f", "2"), Is.EqualTo("http://example.com?f=2"));
+            Assert.That("http://example.com?s=0&f=1&s=1".SetQueryParam("f", "2"), Is.EqualTo("http://example.com?s=0&f=2&s=1"));
+        }
+
+        [Test]
+        public void Can_AddHashParam()
+        {
+            Assert.That("http://example.com".AddHashParam("f", "1"), Is.EqualTo("http://example.com#f=1"));
+            Assert.That("http://example.com#s=0".AddHashParam("f", "1"), Is.EqualTo("http://example.com#s=0/f=1"));
+            Assert.That("http://example.com#f=1".AddHashParam("f", "2"), Is.EqualTo("http://example.com#f=1/f=2"));
+            Assert.That("http://example.com#s=0/f=1/s=1".AddHashParam("f", "2"), Is.EqualTo("http://example.com#s=0/f=1/s=1/f=2"));
+        }
+
+        [Test]
+        public void Can_SetHashParam()
+        {
+            Assert.That("http://example.com".SetHashParam("f", "1"), Is.EqualTo("http://example.com#f=1"));
+            Assert.That("http://example.com#s=0".SetHashParam("f", "1"), Is.EqualTo("http://example.com#s=0/f=1"));
+            Assert.That("http://example.com#f=1".SetHashParam("f", "2"), Is.EqualTo("http://example.com#f=2"));
+            Assert.That("http://example.com#s=0/f=1/s=1".SetHashParam("f", "2"), Is.EqualTo("http://example.com#s=0/f=2/s=1"));
+        }
+    }
+}

tests/ServiceStack.Text.Tests/ServiceStack.Text.Tests.csproj

@@ -179,6 +179,7 @@
     <Compile Include="EnumerableTests.cs" />
     <Compile Include="AttributeTests.cs" />
     <Compile Include="CsvTypeTests.cs" />
+    <Compile Include="HttpUtilsTests.cs" />
     <Compile Include="JsonTests\JsonEnumTests.cs" />
     <Compile Include="JsonTests\InvalidJsonTests.cs" />
     <Compile Include="JsonTests\OnDeserializationErrorTests.cs" />