1 files changed, 42 insertions, 0 deletions
diff --git a/Crypto/src/util/io/TeeOutputStream.cs b/Crypto/src/util/io/TeeOutputStream.cs
new file mode 100644
index 000000000..965ef23c8
--- /dev/null
+++ b/Crypto/src/util/io/TeeOutputStream.cs
@@ -0,0 +1,42 @@
+using System;
+using System.Diagnostics;
+using System.IO;
+
+namespace Org.BouncyCastle.Utilities.IO
+{
+ public class TeeOutputStream
+ : BaseOutputStream
+ {
+ private readonly Stream output, tee;
+
+ public TeeOutputStream(Stream output, Stream tee)
+ {
+ Debug.Assert(output.CanWrite);
+ Debug.Assert(tee.CanWrite);
+
+ this.output = output;
+ this.tee = tee;
+ }
+
+ protected override void Dispose(bool disposing)
+ {
+ if (disposing)
+ {
+ output.Dispose();
+ tee.Dispose();
+ }
+ }
+
+ public override void Write(byte[] buffer, int offset, int count)
+ {
+ output.Write(buffer, offset, count);
+ tee.Write(buffer, offset, count);
+ }
+
+ public override void WriteByte(byte b)
+ {
+ output.WriteByte(b);
+ tee.WriteByte(b);
+ }
+ }
+}
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