misc/libphysfs/lzma/C/Archive/7z/7zExtract.h
author Wuzzy <almikes@aol.com>
Sat, 15 Apr 2017 23:21:13 +0200
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/* 7zExtract.h */
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#ifndef __7Z_EXTRACT_H
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#define __7Z_EXTRACT_H
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#include "7zIn.h"
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/*
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  SzExtract extracts file from archive
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  *outBuffer must be 0 before first call for each new archive. 
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  Extracting cache:
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    If you need to decompress more than one file, you can send 
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    these values from previous call:
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      *blockIndex, 
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      *outBuffer, 
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      *outBufferSize
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    You can consider "*outBuffer" as cache of solid block. If your archive is solid, 
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    it will increase decompression speed.
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    If you use external function, you can declare these 3 cache variables 
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    (blockIndex, outBuffer, outBufferSize) as static in that external function.
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    Free *outBuffer and set *outBuffer to 0, if you want to flush cache.
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*/
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SZ_RESULT SzExtract(
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    ISzInStream *inStream, 
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    CArchiveDatabaseEx *db,
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    UInt32 fileIndex,         /* index of file */
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    UInt32 *blockIndex,       /* index of solid block */
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    Byte **outBuffer,         /* pointer to pointer to output buffer (allocated with allocMain) */
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    size_t *outBufferSize,    /* buffer size for output buffer */
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    size_t *offset,           /* offset of stream for required file in *outBuffer */
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    size_t *outSizeProcessed, /* size of file in *outBuffer */
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    ISzAlloc *allocMain,
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    ISzAlloc *allocTemp);
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#endif