* Add LZ77 Compression

include/LZ77/LZBase.hpp

@@ -0,0 +1,44 @@
+#ifndef LZBASE_HPP
+#define LZBASE_HPP
+
+#include <string>
+#include "LZ77/LZLookupTable.hpp"
+
+class LZBase
+{
+public:
+    explicit LZBase(atInt32 minimumOffset=1,atInt32 slidingWindow=4096, atInt32 minimumMatch=3, atInt32 blockSize=8);
+    virtual ~LZBase() {}
+
+    virtual atUint32 compress(const atUint8* src, atUint8*& dest, atUint32 srcLength)=0;
+    virtual atUint32 decompress(const atUint8* src, atUint8*& dest, atUint32 srcLength)=0;
+	
+    void setSlidingWindow(atInt32 SlidingWindow);
+    atInt32 slidingWindow();
+    void setReadAheadBuffer(atInt32 ReadAheadBuffer);
+    atInt32 readAheadBuffer();
+    void setMinMatch(atInt32 minimumMatch);
+    atInt32 minMatch();
+    void setBlockSize(atInt32 BlockSize);
+    atInt32 blockSize();
+    void setMinimumOffset(atUint32 minimumOffset);
+    atUint32 minimumOffset();
+	
+	
+private:
+	
+    atInt32 subMatch(const atUint8* str1,const uint8_t* str2,const atInt32 len);
+    LZLengthOffset windowSearch(atUint8* beginSearchPtr, atUint8* searchPosPtr, atUint8* endLABufferPtr, atUint8* startLBPtr);
+protected:
+    LZLengthOffset search(atUint8* posPtr, atUint8* dataBegin, atUint8* dataEnd);
+	
+    atInt32 m_slidingWindow;
+    atInt32 m_readAheadBuffer;
+    atInt32 m_minMatch;//Minimum number of bytes that have to matched to go through with compression
+    atInt32 m_blockSize;
+    atUint32 m_minOffset;
+    LZLookupTable m_lookupTable;
+
+};
+
+#endif // LZBASE_HPP