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work in progress, cleaned up the directories and split them up into folder which make more sense, Still need to compile libvitaboy and all the tools
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80
deps/zlib/compress.c
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80
deps/zlib/compress.c
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/* compress.c -- compress a memory buffer
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* Copyright (C) 1995-2005 Jean-loup Gailly.
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* For conditions of distribution and use, see copyright notice in zlib.h
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*/
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/* @(#) $Id$ */
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#define ZLIB_INTERNAL
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#include "zlib.h"
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/* ===========================================================================
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Compresses the source buffer into the destination buffer. The level
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parameter has the same meaning as in deflateInit. sourceLen is the byte
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length of the source buffer. Upon entry, destLen is the total size of the
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destination buffer, which must be at least 0.1% larger than sourceLen plus
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12 bytes. Upon exit, destLen is the actual size of the compressed buffer.
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compress2 returns Z_OK if success, Z_MEM_ERROR if there was not enough
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memory, Z_BUF_ERROR if there was not enough room in the output buffer,
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Z_STREAM_ERROR if the level parameter is invalid.
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*/
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int ZEXPORT compress2 (dest, destLen, source, sourceLen, level)
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Bytef *dest;
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uLongf *destLen;
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const Bytef *source;
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uLong sourceLen;
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int level;
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{
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z_stream stream;
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int err;
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stream.next_in = (Bytef*)source;
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stream.avail_in = (uInt)sourceLen;
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#ifdef MAXSEG_64K
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/* Check for source > 64K on 16-bit machine: */
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if ((uLong)stream.avail_in != sourceLen) return Z_BUF_ERROR;
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#endif
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stream.next_out = dest;
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stream.avail_out = (uInt)*destLen;
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if ((uLong)stream.avail_out != *destLen) return Z_BUF_ERROR;
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stream.zalloc = (alloc_func)0;
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stream.zfree = (free_func)0;
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stream.opaque = (voidpf)0;
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err = deflateInit(&stream, level);
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if (err != Z_OK) return err;
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err = deflate(&stream, Z_FINISH);
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if (err != Z_STREAM_END) {
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deflateEnd(&stream);
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return err == Z_OK ? Z_BUF_ERROR : err;
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}
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*destLen = stream.total_out;
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err = deflateEnd(&stream);
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return err;
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}
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/* ===========================================================================
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*/
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int ZEXPORT compress (dest, destLen, source, sourceLen)
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Bytef *dest;
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uLongf *destLen;
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const Bytef *source;
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uLong sourceLen;
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{
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return compress2(dest, destLen, source, sourceLen, Z_DEFAULT_COMPRESSION);
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}
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/* ===========================================================================
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If the default memLevel or windowBits for deflateInit() is changed, then
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this function needs to be updated.
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*/
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uLong ZEXPORT compressBound (sourceLen)
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uLong sourceLen;
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{
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return sourceLen + (sourceLen >> 12) + (sourceLen >> 14) +
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(sourceLen >> 25) + 13;
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}
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