add

+/*
+ * Copyright 2007 Stephen Liu
+ * For license terms, see the file COPYING along with this library.
+ */
+
+#ifndef __spmsgdecoder_hpp__
+#define __spmsgdecoder_hpp__
+
+class SP_Buffer;
+
+class SP_MsgDecoder {
+public:
+	virtual ~SP_MsgDecoder();
+
+	enum { eOK, eMoreData };
+
+	virtual int decode( SP_Buffer * inBuffer ) = 0;
+};
+
+class SP_DefaultMsgDecoder : public SP_MsgDecoder {
+public:
+	SP_DefaultMsgDecoder();
+	virtual ~SP_DefaultMsgDecoder();
+
+	// always return SP_MsgDecoder::eOK, move buffer from inBuffer to mBuffer
+	virtual int decode( SP_Buffer * inBuffer );
+
+	SP_Buffer * getMsg();
+
+private:
+	SP_Buffer * mBuffer;
+};
+
+class SP_LineMsgDecoder : public SP_MsgDecoder {
+public:
+	SP_LineMsgDecoder();
+	virtual ~SP_LineMsgDecoder();
+
+	// return SP_MsgDecoder::eMoreData until meet <CRLF>
+	virtual int decode( SP_Buffer * inBuffer );
+
+	const char * getMsg();
+
+private:
+	char * mLine;
+};
+
+class SP_CircleQueue;
+
+class SP_MultiLineMsgDecoder : public SP_MsgDecoder {
+public:
+	SP_MultiLineMsgDecoder();
+	~SP_MultiLineMsgDecoder();
+
+	// return SP_MsgDecoder::eMoreData until meet <CRLF>
+	virtual int decode( SP_Buffer * inBuffer );
+
+	SP_CircleQueue * getQueue();
+
+private:
+	SP_CircleQueue * mQueue;
+};
+
+class SP_DotTermMsgDecoder : public SP_MsgDecoder {
+public:
+	SP_DotTermMsgDecoder();
+	virtual ~SP_DotTermMsgDecoder();
+
+	// return SP_MsgDecoder::eMoreData until meet <CRLF>.<CRLF>
+	virtual int decode( SP_Buffer * inBuffer );
+
+	const char * getMsg();
+
+private:
+	char * mBuffer;
+};
+
+class SP_ArrayList;
+
+class SP_DotTermChunkMsgDecoder : public SP_MsgDecoder {
+public:
+
+	enum { MAX_SIZE_PER_CHUNK = 1024 * 64 };
+
+public:
+	SP_DotTermChunkMsgDecoder();
+	virtual ~SP_DotTermChunkMsgDecoder();
+
+	// return SP_MsgDecoder::eMoreData until meet <CRLF>.<CRLF>
+	virtual int decode( SP_Buffer * inBuffer );
+
+	// caller need to free return value
+	char * getMsg();
+
+private:
+	SP_ArrayList * mList;
+};
+
+#endif
+