Json serialization for Unicode

Octokit.Tests/SimpleJsonSerializerTests.cs

@@ -1,5 +1,7 @@
 using Octokit.Helpers;
 using Octokit.Internal;
+using System.Linq;
+using System.Text;
 using Xunit;
 
 namespace Octokit.Tests
@@ -64,6 +66,33 @@ public void HandlesMixingNullAndNotNullData()
                 Assert.Equal("{\"int\":42,\"bool\":true}", json);
             }
 
+            [Fact]
+            public void HandleUnicodeCharacters()
+            {
+                const string backspace = "\b";
+                const string tab = "\t";
+
+                var sb = new StringBuilder();
+                sb.Append("My name has Unicode characters");
+                Enumerable.Range(0, 19).Select(e => System.Convert.ToChar(e))
+                .Aggregate(sb, (a, b) => a.Append(b));
+                sb.Append(backspace).Append(tab);
+                var data = sb.ToString();
+
+                var json = new SimpleJsonSerializer().Serialize(data);
+                var lastTabCharacter = (json
+                        .Reverse()
+                        .Skip(1)
+                        .Take(2)
+                        .Reverse()
+                    .Aggregate(new StringBuilder(),(a,b) =>a.Append(b)));
+
+                var deserializeData = new SimpleJsonSerializer().Deserialize<string>(json);
+
+                Assert.True(lastTabCharacter.ToString().Equals("\\t"));
+                Assert.Equal(data,deserializeData );
+            }
+
             [Fact]
             public void HandlesBase64EncodedStrings()
             {

Octokit/SimpleJson.cs

@@ -517,7 +517,12 @@ static class SimpleJson
         private const int BUILDER_CAPACITY = 2000;
 
         private static readonly char[] EscapeTable;
-        private static readonly char[] EscapeCharacters = new char[] { '"', '\\', '\b', '\f', '\n', '\r', '\t' };
+        private static readonly char[] EscapeCharacters = new char[] { '"', '\\',
+            '\x00', '\x01', '\x02', '\x03', '\x04', '\x05', '\x06', '\x07',
+            '\x08', '\x09', '\x0a', '\x0b', '\x0c', '\x0d', '\x0e', '\x0f',
+            '\x10', '\x11', '\x12', '\x13', '\x14', '\x15', '\x16', '\x17',
+            '\x18', '\x19', '\x1a', '\x1b', '\x1c', '\x1d', '\x1e', '\x1f'
+        };
         private static readonly string EscapeCharactersString = new string(EscapeCharacters);
 
         static SimpleJson()
@@ -1114,11 +1119,7 @@ static bool SerializeString(string aString, StringBuilder builder)
                 // Non ascii characters are fine, buffer them up and send them to the builder
                 // in larger chunks if possible. The escape table is a 1:1 translation table
                 // with \0 [default(char)] denoting a safe character.
-                if (c >= EscapeTable.Length || EscapeTable[c] == default(char))
-                {
-                    safeCharacterCount++;
-                }
-                else
+                if (Char.IsControl(c) || c == '\"' || c == '\\')
                 {
                     if (safeCharacterCount > 0)
                     {
@@ -1127,7 +1128,37 @@ static bool SerializeString(string aString, StringBuilder builder)
                     }
 
                     builder.Append('\\');
-                    builder.Append(EscapeTable[c]);
+                    switch (c)
+                    {
+                        case '\\':
+                            builder.Append('\\');
+                            break;
+                        case '\"':
+                            builder.Append('\"');
+                            break;
+                        case '\b':
+                            builder.Append('b');
+                            break;
+                        case '\f':
+                            builder.Append('f');
+                            break;
+                        case '\r':
+                            builder.Append('r');
+                            break;
+                        case '\t':
+                            builder.Append('t');
+                            break;
+                        case '\n':
+                            builder.Append('n');
+                            break;
+                        default:
+                            builder.AppendFormat("u{0:X4}", (int)c);
+                            break;
+                    }
+                }
+                else
+                {
+                    safeCharacterCount++;
                 }
             }
 

SolutionInfo.cs

@@ -6,10 +6,8 @@
 [assembly: AssemblyVersionAttribute("0.17.0")]
 [assembly: AssemblyFileVersionAttribute("0.17.0")]
 [assembly: ComVisibleAttribute(false)]
-namespace System
-{
-    internal static class AssemblyVersionInformation
-    {
+namespace System {
+    internal static class AssemblyVersionInformation {
         internal const string Version = "0.17.0";
     }
 }