1 files changed, 66 insertions, 0 deletions

diff --git a/src/stable/queuebuf.h b/src/stable/queuebuf.h
new file mode 100644
index 0000000..929ca35
--- /dev/null
+++ b/src/stable/queuebuf.h
@@ -0,0 +1,66 @@
+/*
+ * 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_QUEUE_BUF_H
+#define BU_QUEUE_BUF_H
+
+#include "bu/stream.h"
+
+namespace Bu
+{
+        /**
+         * A queuing buffer stream class.  All data written to this class is
+         * appended to it, there is no stored position.  All data read is read
+         * from the begining and then thrown away.  It operates by using a linked
+         * list of small buffers, and deallocating or reusing them when it can.
+         */
+        class QueueBuf : public Bu::Stream
+        {
+        public:
+                QueueBuf( int iBlockSize=256 );
+                virtual ~QueueBuf();
+
+                virtual void close();
+                virtual Bu::size read( void *pBuf, Bu::size nBytes );
+                virtual Bu::size peek( void *pBuf, Bu::size nBytes );
+                virtual Bu::size peek( void *pBuf, Bu::size nBytes, Bu::size nSkip );
+                virtual Bu::size write( const void *pBuf, Bu::size nBytes );
+                virtual Bu::size tell();
+                virtual void seek( Bu::size offset );
+                virtual void setPos( Bu::size pos );
+                virtual void setPosEnd( Bu::size pos );
+                virtual bool isEos();
+                virtual bool isOpen();
+                virtual void flush();
+                virtual bool canRead();
+                virtual bool canWrite();
+                virtual bool isReadable();
+                virtual bool isWritable();
+                virtual bool isSeekable();
+                virtual bool isBlocking();
+                virtual void setBlocking( bool bBlocking=true );
+                virtual void setSize( Bu::size iSize );
+
+                virtual size getSize() const;
+                virtual size getBlockSize() const;
+                virtual Bu::String getLocation() const;
+
+        private:
+                void addBlock();
+                void removeBlock();
+
+        private:
+                int iBlockSize;
+                int iReadOffset;
+                int iWriteOffset;
+                Bu::size iTotalSize;
+                typedef Bu::List<char *> BlockList;
+                BlockList lBlocks;
+        };
+};
+
+#endif