inflate.c File Reference

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

Macros
#define	UPDATE(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)
#define	DROPBITS(n)
#define	BYTEBITS()

Functions
local int inflateStateCheck	OF ((z_streamp strm))
local void fixedtables	OF ((struct inflate_state FAR *state))
local int updatewindow	OF ((z_streamp strm, const unsigned char FAR *end, unsigned copy))
local unsigned syncsearch	OF ((unsigned FAR *have, const unsigned char FAR *buf, unsigned len))
local int	inflateStateCheck (z_streamp strm)
int ZEXPORT	inflateResetKeep (z_streamp strm)
int ZEXPORT	inflateReset (z_streamp strm)
int ZEXPORT	inflateReset2 (z_streamp strm, int windowBits)
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)
int ZEXPORT	inflatePrime (z_streamp strm, int bits, int value)
local void	fixedtables (struct inflate_state FAR *state)
local int	updatewindow (z_streamp strm, const Bytef *end, unsigned copy)
int ZEXPORT	inflate (z_streamp strm, int flush)
int ZEXPORT	inflateEnd (z_streamp strm)
int ZEXPORT	inflateGetDictionary (z_streamp strm, Bytef *dictionary, uInt *dictLength)
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, const 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)
int ZEXPORT	inflateUndermine (z_streamp strm, int subvert)
int ZEXPORT	inflateValidate (z_streamp strm, int check)
long ZEXPORT	inflateMark (z_streamp strm)
unsigned long ZEXPORT	inflateCodesUsed (z_streamp strm)

Macro Definition Documentation

BITS

#define BITS

(

n

)

Value:

    ((unsigned)hold & ((1U << (n)) - 1))

BYTEBITS

#define BYTEBITS

(

)

Value:

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

CRC2

#define CRC2	(		check,
			word )

Value:

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

CRC4

#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)

DROPBITS

#define DROPBITS

(

n

)

Value:

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

INITBITS

#define INITBITS

(

)

Value:

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

LOAD

#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)

NEEDBITS

#define NEEDBITS

(

n

)

Value:

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

PULLBYTE

#define PULLBYTE

(

)

Value:

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

RESTORE

#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)

UPDATE

#define UPDATE	(		check,
			buf,
			len )

Value:

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

Function Documentation

fixedtables()

local void fixedtables

(

struct inflate_state FAR *

state

)

inflate()

int ZEXPORT inflate	(	z_streamp	strm,
		int	flush )

inflateCodesUsed()

unsigned long ZEXPORT inflateCodesUsed

(

z_streamp

strm

)

inflateCopy()

int ZEXPORT inflateCopy	(	z_streamp	dest,
		z_streamp	source )

inflateEnd()

int ZEXPORT inflateEnd

(

z_streamp

strm

)

inflateGetDictionary()

int ZEXPORT inflateGetDictionary	(	z_streamp	strm,
		Bytef *	dictionary,
		uInt *	dictLength )

inflateGetHeader()

int ZEXPORT inflateGetHeader	(	z_streamp	strm,
		gz_headerp	head )

inflateInit2_()

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

inflateInit_()

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

inflateMark()

long ZEXPORT inflateMark

(

z_streamp

strm

)

inflatePrime()

int ZEXPORT inflatePrime	(	z_streamp	strm,
		int	bits,
		int	value )

inflateReset()

int ZEXPORT inflateReset

(

z_streamp

strm

)

inflateReset2()

int ZEXPORT inflateReset2	(	z_streamp	strm,
		int	windowBits )

inflateResetKeep()

int ZEXPORT inflateResetKeep

(

z_streamp

strm

)

inflateSetDictionary()

int ZEXPORT inflateSetDictionary	(	z_streamp	strm,
		const Bytef *	dictionary,
		uInt	dictLength )

inflateStateCheck()

local int inflateStateCheck

(

z_streamp

strm

)

inflateSync()

int ZEXPORT inflateSync

(

z_streamp

strm

)

inflateSyncPoint()

int ZEXPORT inflateSyncPoint

(

z_streamp

strm

)

inflateUndermine()

int ZEXPORT inflateUndermine	(	z_streamp	strm,
		int	subvert )

inflateValidate()

int ZEXPORT inflateValidate	(	z_streamp	strm,
		int	check )

OF() [1/4]

local void fixedtables OF

(

(struct inflate_state FAR *state)

)

OF() [2/4]

local unsigned syncsearch OF

(

(unsigned FAR *have, const unsigned char FAR *buf, unsigned len)

)

OF() [3/4]

local int inflateStateCheck OF

(

(z_streamp strm)

)

OF() [4/4]

local int updatewindow OF

(

(z_streamp strm, const unsigned char FAR *end, unsigned copy)

)

syncsearch()

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

updatewindow()

local int updatewindow	(	z_streamp	strm,
		const Bytef *	end,
		unsigned	copy )