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inflate.c File Reference

#include "zutil.h"
#include "inftrees.h"
#include "inflate.h"
#include "inffast.h"
#include "inffixed.h"

Go to the source code of this file.

Defines

#define UPDATE(check, buf, len)   (state->flags ? crc32(check, buf, len) : adler32(check, buf, len))
#define CRC2(check, word)
#define CRC4(check, word)
#define LOAD()
#define RESTORE()
#define INITBITS()
#define PULLBYTE()
#define NEEDBITS(n)
#define BITS(n)   ((unsigned)hold & ((1U << (n)) - 1))
#define DROPBITS(n)
#define BYTEBITS()
#define REVERSE(q)

Functions

local void fixedtables OF ((struct inflate_state FAR *state))
local int updatewindow OF ((z_streamp strm, unsigned out))
local unsigned syncsearch OF ((unsigned FAR *have, unsigned char FAR *buf, unsigned len))
int ZEXPORT inflateReset (z_streamp strm)
int ZEXPORT inflatePrime (z_streamp strm, int bits, int value)
int ZEXPORT inflateInit2_ (z_streamp strm, int windowBits, const char *version, int stream_size)
int ZEXPORT inflateInit_ (z_streamp strm, const char *version, int stream_size)
local void fixedtables (struct inflate_state FAR *state)
local int updatewindow (z_streamp strm, unsigned out)
int ZEXPORT inflate (z_streamp strm, int flush)
int ZEXPORT inflateEnd (z_streamp strm)
int ZEXPORT inflateSetDictionary (z_streamp strm, const Bytef *dictionary, uInt dictLength)
int ZEXPORT inflateGetHeader (z_streamp strm, gz_headerp head)
local unsigned syncsearch (unsigned FAR *have, unsigned char FAR *buf, unsigned len)
int ZEXPORT inflateSync (z_streamp strm)
int ZEXPORT inflateSyncPoint (z_streamp strm)
int ZEXPORT inflateCopy (z_streamp dest, z_streamp source)


Define Documentation

#define BITS  )     ((unsigned)hold & ((1U << (n)) - 1))
 

Definition at line 450 of file inflate.c.

 
#define BYTEBITS  ) 
 

Value:

do { \
        hold >>= bits & 7; \
        bits -= bits & 7; \
    } while (0)

Definition at line 461 of file inflate.c.

#define CRC2 check,
word   ) 
 

Value:

do { \
        hbuf[0] = (unsigned char)(word); \
        hbuf[1] = (unsigned char)((word) >> 8); \
        check = crc32(check, hbuf, 2); \
    } while (0)

Definition at line 385 of file inflate.c.

Referenced by inflate().

#define CRC4 check,
word   ) 
 

Value:

do { \
        hbuf[0] = (unsigned char)(word); \
        hbuf[1] = (unsigned char)((word) >> 8); \
        hbuf[2] = (unsigned char)((word) >> 16); \
        hbuf[3] = (unsigned char)((word) >> 24); \
        check = crc32(check, hbuf, 4); \
    } while (0)

Definition at line 392 of file inflate.c.

#define DROPBITS  ) 
 

Value:

do { \
        hold >>= (n); \
        bits -= (unsigned)(n); \
    } while (0)

Definition at line 454 of file inflate.c.

 
#define INITBITS  ) 
 

Value:

do { \
        hold = 0; \
        bits = 0; \
    } while (0)

Definition at line 425 of file inflate.c.

 
#define LOAD  ) 
 

Value:

do { \
        put = strm->next_out; \
        left = strm->avail_out; \
        next = strm->next_in; \
        have = strm->avail_in; \
        hold = state->hold; \
        bits = state->bits; \
    } while (0)

Definition at line 403 of file inflate.c.

#define NEEDBITS  ) 
 

Value:

do { \
        while (bits < (unsigned)(n)) \
            PULLBYTE(); \
    } while (0)

Definition at line 443 of file inflate.c.

 
#define PULLBYTE  ) 
 

Value:

do { \
        if (have == 0) goto inf_leave; \
        have--; \
        hold += (unsigned long)(*next++) << bits; \
        bits += 8; \
    } while (0)

Definition at line 433 of file inflate.c.

 
#define RESTORE  ) 
 

Value:

do { \
        strm->next_out = put; \
        strm->avail_out = left; \
        strm->next_in = next; \
        strm->avail_in = have; \
        state->hold = hold; \
        state->bits = bits; \
    } while (0)

Definition at line 414 of file inflate.c.

#define REVERSE  ) 
 

Value:

((((q) >> 24) & 0xff) + (((q) >> 8) & 0xff00) + \
     (((q) & 0xff00) << 8) + (((q) & 0xff) << 24))

Definition at line 468 of file inflate.c.

#define UPDATE check,
buf,
len   )     (state->flags ? crc32(check, buf, len) : adler32(check, buf, len))
 

Definition at line 377 of file inflate.c.


Function Documentation

local void fixedtables struct inflate_state FAR *  state  ) 
 

Definition at line 205 of file inflate.c.

References distfix, DISTS, inflate_table(), lenfix, and LENS.

int ZEXPORT inflate z_streamp  strm,
int  flush
 

Definition at line 554 of file inflate.c.

References BAD, BITS, inflate_state::bits, inflate_state::check, CRC2, crc32(), inflate_state::flags, FLAGS, inflate_state::have, inflate_state::head, HEAD, inflate_state::hold, INITBITS, inflate_state::last, LOAD, inflate_state::mode, NEEDBITS, inflate_state::next, TYPE, TYPEDO, inflate_state::wrap, Z_DEFLATED, Z_NULL, Z_OK, and Z_STREAM_ERROR.

Referenced by CZIPFile::File::Decompress(), CZIPFile::File::Extract(), CDownloadTransferED2K::OnCompressedPart(), CNeighbour::OnRead(), CHostBrowser::ReadContent(), uncompress(), and CBuffer::Ungzip().

int ZEXPORT inflateCopy z_streamp  dest,
z_streamp  source
 

Definition at line 1323 of file inflate.c.

References inflate_state::codes, inflate_state::distcode, ENOUGH, inflate_state::lencode, inflate_state::next, inflate_state::wbits, inflate_state::window, inflate_state::wsize, Z_MEM_ERROR, Z_NULL, Z_OK, Z_STREAM_ERROR, ZALLOC, ZFREE, and zmemcpy().

int ZEXPORT inflateEnd z_streamp  strm  ) 
 

Definition at line 1155 of file inflate.c.

References Tracev, inflate_state::window, Z_NULL, Z_OK, Z_STREAM_ERROR, and ZFREE.

Referenced by CDownloadTransferED2K::ClearRequests(), CZIPFile::File::Decompress(), CZIPFile::File::Extract(), CDownloadTransferED2K::OnCompressedPart(), CHostBrowser::Stop(), uncompress(), CBuffer::Ungzip(), and CNeighbour::~CNeighbour().

int ZEXPORT inflateGetHeader z_streamp  strm,
gz_headerp  head
 

Definition at line 1211 of file inflate.c.

References inflate_state::head, inflate_state::wrap, Z_NULL, Z_OK, and Z_STREAM_ERROR.

int ZEXPORT inflateInit2_ z_streamp  strm,
int  windowBits,
const char *  version,
int  stream_size
 

Definition at line 144 of file inflate.c.

References inflateReset(), Tracev, inflate_state::wbits, inflate_state::window, inflate_state::wrap, Z_MEM_ERROR, Z_NULL, Z_STREAM_ERROR, Z_VERSION_ERROR, ZALLOC, zcalloc(), zcfree(), ZFREE, and ZLIB_VERSION.

Referenced by inflateInit_().

int ZEXPORT inflateInit_ z_streamp  strm,
const char *  version,
int  stream_size
 

Definition at line 187 of file inflate.c.

References DEF_WBITS, and inflateInit2_().

int ZEXPORT inflatePrime z_streamp  strm,
int  bits,
int  value
 

Definition at line 128 of file inflate.c.

References inflate_state::bits, inflate_state::hold, Z_NULL, Z_OK, and Z_STREAM_ERROR.

int ZEXPORT inflateReset z_streamp  strm  ) 
 

Definition at line 103 of file inflate.c.

References inflate_state::bits, inflate_state::codes, inflate_state::distcode, inflate_state::dmax, inflate_state::havedict, inflate_state::head, HEAD, inflate_state::hold, inflate_state::last, inflate_state::lencode, inflate_state::mode, inflate_state::next, inflate_state::total, Tracev, inflate_state::whave, inflate_state::write, inflate_state::wsize, Z_NULL, Z_OK, and Z_STREAM_ERROR.

Referenced by inflateInit2_(), and inflateSync().

int ZEXPORT inflateSetDictionary z_streamp  strm,
const Bytef dictionary,
uInt  dictLength
 

Definition at line 1169 of file inflate.c.

References adler32(), inflate_state::check, DICT, inflate_state::havedict, MEM, inflate_state::mode, Tracev, updatewindow(), inflate_state::whave, inflate_state::window, inflate_state::wrap, inflate_state::wsize, Z_DATA_ERROR, Z_MEM_ERROR, Z_NULL, Z_OK, Z_STREAM_ERROR, and zmemcpy().

int ZEXPORT inflateSync z_streamp  strm  ) 
 

Definition at line 1262 of file inflate.c.

References inflate_state::bits, inflate_state::have, inflate_state::hold, inflateReset(), inflate_state::mode, SYNC, syncsearch(), TYPE, Z_BUF_ERROR, Z_DATA_ERROR, Z_NULL, Z_OK, and Z_STREAM_ERROR.

int ZEXPORT inflateSyncPoint z_streamp  strm  ) 
 

Definition at line 1313 of file inflate.c.

References inflate_state::bits, inflate_state::mode, STORED, Z_NULL, and Z_STREAM_ERROR.

local unsigned syncsearch OF (unsigned FAR *have, unsigned char FAR *buf, unsigned len)   ) 
 

local int updatewindow OF (z_streamp strm, unsigned out)   ) 
 

local void fixedtables OF (struct inflate_state FAR *state)   ) 
 

local unsigned syncsearch unsigned FAR *  have,
unsigned char FAR *  buf,
unsigned  len
 

Definition at line 1239 of file inflate.c.

References inflate_state::next.

Referenced by inflateSync().

local int updatewindow z_streamp  strm,
unsigned  out
 

Definition at line 323 of file inflate.c.

References inflate_state::wbits, inflate_state::whave, inflate_state::window, inflate_state::write, inflate_state::wsize, Z_NULL, ZALLOC, and zmemcpy().

Referenced by inflateSetDictionary().


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