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()
#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)

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)

REVERSE

#define REVERSE

(

q

)

Value:

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

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 )

inflateCopy()

int ZEXPORT inflateCopy	(	z_streamp	dest,
		z_streamp	source )

inflateEnd()

int ZEXPORT inflateEnd

(

z_streamp

strm

)

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 )

inflatePrime()

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

inflateReset()

int ZEXPORT inflateReset

(

z_streamp

strm

)

inflateSetDictionary()

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

inflateSync()

int ZEXPORT inflateSync

(

z_streamp

strm

)

inflateSyncPoint()

int ZEXPORT inflateSyncPoint

(

z_streamp

strm

)

OF() [1/3]

local void fixedtables OF

(

(struct inflate_state FAR *state)

)

OF() [2/3]

local unsigned syncsearch OF

(

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

)

OF() [3/3]

local int updatewindow OF

(

(z_streamp strm, unsigned out)

)

syncsearch()

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

updatewindow()

local int updatewindow	(	z_streamp	strm,
		unsigned	out )