1 files changed, 58 insertions, 0 deletions

diff --git a/src/stable/buffer.h b/src/stable/buffer.h
new file mode 100644
index 0000000..91ec9c2
--- /dev/null
+++ b/src/stable/buffer.h
@@ -0,0 +1,58 @@
+/*
+ * Copyright (C) 2007-2011 Xagasoft, All rights reserved.
+ *
+ * This file is part of the libbu++ library and is released under the
+ * terms of the license contained in the file LICENSE.
+ */
+
+#ifndef BU_BUFFER_H
+#define BU_BUFFER_H
+
+#include "bu/filter.h"
+
+namespace Bu
+{
+        class Buffer : public Bu::Filter
+        {
+        public:
+                Buffer( Bu::Stream &rNext, int iWhat=Both, int iBufSize=4096 );
+                virtual ~Buffer();
+
+                enum
+                {
+                        Write   = 1,
+                        Read    = 2,
+                        Both    = 3
+                };
+
+                virtual void start();
+                virtual Bu::size stop();
+
+                virtual Bu::size read( void *pBuf, Bu::size nBytes );
+                virtual Bu::size write( const void *pBuf, Bu::size nBytes );
+                using Stream::write;
+
+                Bu::size getReadFill() { return iReadBufFill; }
+                bool isWritePending() { return iWriteBufFill > 0; }
+
+                virtual void flush();
+
+                virtual bool isEos();
+
+        private:
+                void fillReadBuf();
+
+        private:
+                Bu::size sSoFar;
+                int iBufSize;
+                char *sReadBuf;
+                char *sWriteBuf;
+                int iReadBufFill;
+                int iReadPos;
+                int iWriteBufFill;
+                int iWritePos;
+                int iWhat;
+        };
+};
+
+#endif