1 files changed, 104 insertions, 0 deletions
diff --git a/csharp/src/ProtocolBuffers.Serialization/AbstractTextWriter.cs b/csharp/src/ProtocolBuffers.Serialization/AbstractTextWriter.cs
new file mode 100644
index 00000000..e13cbbab
--- /dev/null
+++ b/csharp/src/ProtocolBuffers.Serialization/AbstractTextWriter.cs
@@ -0,0 +1,104 @@
+using System;
+using System.Xml;
+
+namespace Google.ProtocolBuffers.Serialization
+{
+    /// <summary>
+    /// Provides a base class for text writers
+    /// </summary>
+    public abstract class AbstractTextWriter : AbstractWriter
+    {
+        /// <summary>
+        /// Encodes raw bytes to be written to the stream
+        /// </summary>
+        protected virtual string EncodeBytes(ByteString bytes)
+        {
+            return bytes.ToBase64();
+        }
+
+        /// <summary>
+        /// Writes a typed field as a text value
+        /// </summary>
+        protected abstract void WriteAsText(string field, string textValue, object typedValue);
+
+        /// <summary>
+        /// Writes a String value
+        /// </summary>
+        protected override void Write(string field, string value)
+        {
+            WriteAsText(field, value, value);
+        }
+
+        /// <summary>
+        /// Writes a Boolean value
+        /// </summary>
+        protected override void Write(string field, bool value)
+        {
+            WriteAsText(field, XmlConvert.ToString(value), value);
+        }
+
+        /// <summary>
+        /// Writes a Int32 value
+        /// </summary>
+        protected override void Write(string field, int value)
+        {
+            WriteAsText(field, XmlConvert.ToString(value), value);
+        }
+
+        /// <summary>
+        /// Writes a UInt32 value
+        /// </summary>
+        protected override void Write(string field, uint value)
+        {
+            WriteAsText(field, XmlConvert.ToString(value), value);
+        }
+
+        /// <summary>
+        /// Writes a Int64 value
+        /// </summary>
+        protected override void Write(string field, long value)
+        {
+            WriteAsText(field, XmlConvert.ToString(value), value);
+        }
+
+        /// <summary>
+        /// Writes a UInt64 value
+        /// </summary>
+        protected override void Write(string field, ulong value)
+        {
+            WriteAsText(field, XmlConvert.ToString(value), value);
+        }
+
+        /// <summary>
+        /// Writes a Single value
+        /// </summary>
+        protected override void Write(string field, float value)
+        {
+            WriteAsText(field, XmlConvert.ToString(value), value);
+        }
+
+        /// <summary>
+        /// Writes a Double value
+        /// </summary>
+        protected override void Write(string field, double value)
+        {
+            WriteAsText(field, XmlConvert.ToString(value), value);
+        }
+
+        /// <summary>
+        /// Writes a set of bytes
+        /// </summary>
+        protected override void Write(string field, ByteString value)
+        {
+            WriteAsText(field, EncodeBytes(value), value);
+        }
+
+        /// <summary>
+        /// Writes a System.Enum by the numeric and textual value
+        /// </summary>
+        protected override void WriteEnum(string field, int number, string name)
+        {
+            WriteAsText(field, name, number);
+        }
+    }
+}
+\ No newline at end of file