add

+/*
+ * Copyright 2007 Stephen Liu
+ * For license terms, see the file COPYING along with this library.
+ */
+
+
+#ifndef __spbuffer_hpp__
+#define __spbuffer_hpp__
+
+#include <stdlib.h>
+#include <event2/buffer.h>
+
+#ifdef WIN32
+typedef struct spwin32buffer sp_evbuffer_t;
+#else
+typedef struct evbuffer sp_evbuffer_t;
+#endif
+
+struct evbuffer;
+
+class SP_Buffer {
+public:
+	SP_Buffer();
+	~SP_Buffer();
+
+	int append( const void * buffer, int len = 0 );
+	int append( const SP_Buffer * buffer );
+	int printf( const char *fmt, ... );
+
+	void erase( int len );
+	void reset();
+	int truncate( int len );
+	void reserve( int len );
+	int getCapacity();
+
+	const void * getBuffer() const;
+	const void * getRawBuffer() const;
+	size_t getSize() const;
+	int take( char * buffer, int len );
+
+	char * getLine();
+	const void * find( const void * key, size_t len );
+
+	SP_Buffer * take();
+
+private:
+	sp_evbuffer_t * mBuffer;
+
+	friend class SP_IOChannel;
+	friend class SP_IocpEventCallback;
+};
+
+#endif
+