add

+/*
+ * Copyright 2007 Stephen Liu
+ * For license terms, see the file COPYING along with this library.
+ */
+
+#ifndef __spmsgblock_hpp__
+#define __spmsgblock_hpp__
+
+#include <stdio.h>
+
+class SP_Buffer;
+class SP_ArrayList;
+
+class SP_MsgBlock {
+public:
+	virtual ~SP_MsgBlock();
+
+	virtual const void * getData() const = 0;
+	virtual size_t getSize() const = 0;
+};
+
+class SP_MsgBlockList {
+public:
+	SP_MsgBlockList();
+	~SP_MsgBlockList();
+
+	void reset();
+
+	size_t getTotalSize() const;
+
+	int getCount() const;
+	int append( SP_MsgBlock * msgBlock );
+	const SP_MsgBlock * getItem( int index ) const;
+	SP_MsgBlock * takeItem( int index );
+
+private:
+	SP_MsgBlockList( SP_MsgBlockList & );
+	SP_MsgBlockList & operator=( SP_MsgBlockList & );
+
+	SP_ArrayList * mList;
+};
+
+class SP_BufferMsgBlock : public SP_MsgBlock {
+public:
+	SP_BufferMsgBlock();
+	SP_BufferMsgBlock( SP_Buffer * buffer, int toBeOwner );
+	virtual ~SP_BufferMsgBlock();
+
+	virtual const void * getData() const;
+	virtual size_t getSize() const;
+
+	int append( const void * buffer, size_t len = 0 );
+
+private:
+	SP_BufferMsgBlock( SP_BufferMsgBlock & );
+	SP_BufferMsgBlock & operator=( SP_BufferMsgBlock & );
+
+	SP_Buffer * mBuffer;
+	int mToBeOwner;
+};
+
+class SP_SimpleMsgBlock : public SP_MsgBlock {
+public:
+	SP_SimpleMsgBlock();
+	SP_SimpleMsgBlock( void * data, size_t size, int toBeOwner );
+	virtual ~SP_SimpleMsgBlock();
+
+	virtual const void * getData() const;
+	virtual size_t getSize() const;
+
+	void setData( void * data, size_t size, int toBeOwner );
+
+private:
+	SP_SimpleMsgBlock( SP_SimpleMsgBlock & );
+	SP_SimpleMsgBlock & operator=( SP_SimpleMsgBlock & );
+
+	void * mData;
+	size_t mSize;
+	int mToBeOwner;
+};
+
+#endif
+