spmsgdecoder.hpp
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/*
* 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