1 /* 7zExtract.h */

     2 

     3 #ifndef __7Z_EXTRACT_H

     4 #define __7Z_EXTRACT_H

     5 

     6 #include "7zIn.h"

     7 

     8 /*

     9   SzExtract extracts file from archive

    10 

    11   *outBuffer must be 0 before first call for each new archive. 

    12 

    13   Extracting cache:

    14     If you need to decompress more than one file, you can send 

    15     these values from previous call:

    16       *blockIndex, 

    17       *outBuffer, 

    18       *outBufferSize

    19     You can consider "*outBuffer" as cache of solid block. If your archive is solid, 

    20     it will increase decompression speed.

    21   

    22     If you use external function, you can declare these 3 cache variables 

    23     (blockIndex, outBuffer, outBufferSize) as static in that external function.

    24     

    25     Free *outBuffer and set *outBuffer to 0, if you want to flush cache.

    26 */

    27 

    28 SZ_RESULT SzExtract(

    29     ISzInStream *inStream, 

    30     CArchiveDatabaseEx *db,

    31     UInt32 fileIndex,         /* index of file */

    32     UInt32 *blockIndex,       /* index of solid block */

    33     Byte **outBuffer,         /* pointer to pointer to output buffer (allocated with allocMain) */

    34     size_t *outBufferSize,    /* buffer size for output buffer */

    35     size_t *offset,           /* offset of stream for required file in *outBuffer */

    36     size_t *outSizeProcessed, /* size of file in *outBuffer */

    37     ISzAlloc *allocMain,

    38     ISzAlloc *allocTemp);

    39 

    40 #endif