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76 lines
2.8 KiB
76 lines
2.8 KiB
typedef struct tagLZI {
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BYTE *rgbyteRingBuf; // ring buffer for expansion
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BYTE *rgbyteInBuf; // input buffer for reads
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BYTE *pbyteInBufEnd; // pointer past end of rgbyteInBuf[]
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BYTE *pbyteInBuf; // pointer to next byte to read from
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BYTE *rgbyteOutBuf; // output buffer for writes
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BYTE *pbyteOutBufEnd; // pointer past end of rgbyteOutBuf[]
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BYTE *pbyteOutBuf; // pointer to last byte to write from
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// Flag indicating whether or not rgbyteInBuf[0], which holds the last byte
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// from the previous input buffer, should be read as the next input byte.
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// (Only used so that at least one unReadUChar() can be done at all input
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// buffer positions.)
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BOOL bLastUsed;
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// Actually, rgbyteInBuf[] has length (ucbInBufLen + 1) since rgbyteInBuf[0]
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// is used when bLastUsed is TRUE.
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INT cbMaxMatchLen; // longest match length for current algorithm
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LONG cblInSize, // size in bytes of input file
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cblOutSize; // size in bytes of output file
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DWORD ucbInBufLen, // length of input buffer
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ucbOutBufLen; // length of output buffer
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DWORD uFlags; // LZ decoding description byte
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INT iCurRingBufPos; // ring buffer offset
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INT *leftChild; // parents and left and right
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INT *rightChild; // children that make up the
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INT *parent; // binary search trees
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INT iCurMatch, // index of longest match (set by LZInsertNode())
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cbCurMatch; // length of longest match (set by LZInsertNode())
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} LZINFO;
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typedef LZINFO *PLZINFO;
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typedef struct _dcx {
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INT dcxDiamondLastIoError;
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HFDI dcxFdiContext;
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ERF dcxFdiError;
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} DIAMOND_CONTEXT;
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typedef DIAMOND_CONTEXT *PDIAMOND_CONTEXT;
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extern DWORD itlsDiamondContext;
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#define ITLS_ERROR (0xFFFFFFFF)
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#define GotDmdTlsSlot() (itlsDiamondContext != ITLS_ERROR)
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#define GotDmdContext() (TlsGetValue(itlsDiamondContext) != NULL)
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#define FdiContext (((GotDmdTlsSlot() && GotDmdContext()) ? ((PDIAMOND_CONTEXT)(TlsGetValue(itlsDiamondContext)))->dcxFdiContext : NULL))
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#define SetFdiContext(v) (((PDIAMOND_CONTEXT)(TlsGetValue(itlsDiamondContext)))->dcxFdiContext = (v))
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#define FdiError (((PDIAMOND_CONTEXT)(TlsGetValue(itlsDiamondContext)))->dcxFdiError)
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#define DiamondLastIoError (((PDIAMOND_CONTEXT)(TlsGetValue(itlsDiamondContext)))->dcxDiamondLastIoError)
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DWORD
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InitDiamond(
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VOID
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);
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VOID
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TermDiamond(
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VOID
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);
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BOOL
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IsDiamondFile(
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IN PSTR FileName
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);
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INT
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ExpandDiamondFile(
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IN PSTR SourceFileName, // Because LZOpen ... returns ASCII!
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IN PTSTR TargetFileName,
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IN BOOL RenameTarget,
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OUT PLZINFO pLZI
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);
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