1.1 --- /dev/null	Thu Jan 01 00:00:00 1970 +0000
     1.2 +++ b/os/ossrv/compressionlibs/ziplib/test/oldezlib/Zlib/compress.c	Fri Jun 15 03:10:57 2012 +0200
     1.3 @@ -0,0 +1,59 @@
     1.4 +/* compress.c -- compress a memory buffer
     1.5 + * Copyright (C) 1995-1998 Jean-loup Gailly.
     1.6 + * For conditions of distribution and use, see copyright notice in zlib.h 
     1.7 + */
     1.8 +
     1.9 +/* @(#) $Id$ */
    1.10 +
    1.11 +#include "zlib.h"
    1.12 +
    1.13 +/* ===========================================================================
    1.14 +     Compresses the source buffer into the destination buffer. The level
    1.15 +   parameter has the same meaning as in deflateInit.  sourceLen is the byte
    1.16 +   length of the source buffer. Upon entry, destLen is the total size of the
    1.17 +   destination buffer, which must be at least 0.1% larger than sourceLen plus
    1.18 +   12 bytes. Upon exit, destLen is the actual size of the compressed buffer.
    1.19 +
    1.20 +     compress2 returns Z_OK if success, Z_MEM_ERROR if there was not enough
    1.21 +   memory, Z_BUF_ERROR if there was not enough room in the output buffer,
    1.22 +   Z_STREAM_ERROR if the level parameter is invalid.
    1.23 +*/
    1.24 +int ZEXPORT compress2 (Bytef *dest, uLongf *destLen, const Bytef *source, uLong sourceLen, int level)
    1.25 +{
    1.26 +    z_stream stream;
    1.27 +    int err;
    1.28 +
    1.29 +    stream.next_in = (Bytef*)source;
    1.30 +    stream.avail_in = (uInt)sourceLen;
    1.31 +#ifdef MAXSEG_64K
    1.32 +    /* Check for source > 64K on 16-bit machine: */
    1.33 +    if ((uLong)stream.avail_in != sourceLen) return Z_BUF_ERROR;
    1.34 +#endif
    1.35 +    stream.next_out = dest;
    1.36 +    stream.avail_out = (uInt)*destLen;
    1.37 +    if ((uLong)stream.avail_out != *destLen) return Z_BUF_ERROR;
    1.38 +
    1.39 +    stream.zalloc = (alloc_func)0;
    1.40 +    stream.zfree = (free_func)0;
    1.41 +    stream.opaque = (voidpf)0;
    1.42 +
    1.43 +    err = deflateInit(&stream, level);
    1.44 +    if (err != Z_OK) return err;
    1.45 +
    1.46 +    err = deflate(&stream, Z_FINISH);
    1.47 +    if (err != Z_STREAM_END) {
    1.48 +        deflateEnd(&stream);
    1.49 +        return err == Z_OK ? Z_BUF_ERROR : err;
    1.50 +    }
    1.51 +    *destLen = stream.total_out;
    1.52 +
    1.53 +    err = deflateEnd(&stream);
    1.54 +    return err;
    1.55 +}
    1.56 +
    1.57 +/* ===========================================================================
    1.58 + */
    1.59 +int ZEXPORT compress (Bytef *dest, uLongf *destLen, const Bytef *source, uLong sourceLen)
    1.60 +{
    1.61 +    return compress2(dest, destLen, source, sourceLen, Z_DEFAULT_COMPRESSION);
    1.62 +}