34db30b2ce
reduce code overhead associated with managing the stack git-svn-id: https://svn.code.sf.net/p/nsis/code/NSIS/trunk@694 212acab6-be3b-0410-9dea-997c60f758d6
65 lines
1.6 KiB
C
65 lines
1.6 KiB
C
#include "../exehead/config.h"
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#ifdef NSIS_COMPRESS_USE_ZLIB
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/* inflate.c -- zlib interface to inflate modules
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* Copyright (C) 1995-1998 Mark Adler
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* For conditions of distribution and use, see copyright notice in zlib.h
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* this has been HEAVILY modified for NSIS use, and is no longer compatible
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* with the stock zlib.
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*/
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#include "zutil.h"
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#include "infblock.h"
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struct inflate_blocks_state { int dummy; }; /* for buggy compilers */
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/* inflate private state */
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struct internal_state {
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/* mode dependent information */
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union {
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uInt method; /* if FLAGS, method byte */
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struct {
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uLong was; /* computed check value */
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uLong need; /* stream check value */
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} check; /* if CHECK, check values to compare */
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uInt marker; /* if BAD, inflateSync's marker bytes count */
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} sub; /* submode */
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inflate_blocks_statef blocks; /* current inflate_blocks state */
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};
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int ZEXPORT inflateReset(z_streamp z)
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{
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if (z == Z_NULL || z->state == Z_NULL)
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return Z_STREAM_ERROR;
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z->total_in = z->total_out = 0;
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inflate_blocks_reset(&z->state->blocks, z, Z_NULL);
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return Z_OK;
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}
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int ZEXPORT inflateInit(z_streamp z)
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{
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int inflate_blocks_getssize(void);
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void inflate_blocks_init(z_streamp z,inflate_blocks_statef *s);
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if ((z->state =
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(struct internal_state FAR *) ZALLOC(z,1,sizeof(struct internal_state)+inflate_blocks_getssize())) == Z_NULL)
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return Z_MEM_ERROR;
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inflate_blocks_init(z,&z->state->blocks);
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return Z_OK;
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}
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int ZEXPORT inflate(z_streamp z)
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{
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return inflate_blocks(&z->state->blocks, z, Z_OK);
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}
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#endif
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