Use platform compression where available

- Move Bzip2 code into Utilities

1 files changed, 34 insertions, 0 deletions

diff --git a/crypto/src/util/zlib/ZOutputStream.cs b/crypto/src/util/zlib/ZOutputStream.cs

index 301516e57..51a5050dd 100644
--- a/crypto/src/util/zlib/ZOutputStream.cs
+++ b/crypto/src/util/zlib/ZOutputStream.cs
@@ -264,4 +264,38 @@ namespace Org.BouncyCastle.Utilities.Zlib
             Write(buf1, 0, 1);
         }
     }
+
+    public class ZOutputStreamLeaveOpen
+        : ZOutputStream
+    {
+        public ZOutputStreamLeaveOpen(Stream output)
+            : base(output)
+        {
+        }
+
+        public ZOutputStreamLeaveOpen(Stream output, bool nowrap)
+            : base(output, nowrap)
+        {
+        }
+
+        public ZOutputStreamLeaveOpen(Stream output, ZStream z)
+            : base(output, z)
+        {
+        }
+
+        public ZOutputStreamLeaveOpen(Stream output, int level)
+            : base(output, level)
+        {
+        }
+
+        public ZOutputStreamLeaveOpen(Stream output, int level, bool nowrap)
+            : base(output, level, nowrap)
+        {
+        }
+
+        protected override void Dispose(bool disposing)
+        {
+            Detach(disposing);
+        }
+    }
 }