inflate.c File Reference

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

Include dependency graph for inflate.c:

Go to the source code of this file.

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

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

Macro Definition Documentation

BITS

#define BITS

(

n

)

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

Definition at line 450 of file inflate.c.

BYTEBITS

#define BYTEBITS

(

)

Value:

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

Definition at line 461 of file inflate.c.

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)

Definition at line 385 of file inflate.c.

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)

Definition at line 392 of file inflate.c.

DROPBITS

#define DROPBITS

(

n

)

Value:

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

Definition at line 454 of file inflate.c.

INITBITS

#define INITBITS

(

)

Value:

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

Definition at line 425 of file inflate.c.

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)

Definition at line 403 of file inflate.c.

NEEDBITS

#define NEEDBITS

(

n

)

Value:

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

Definition at line 443 of file inflate.c.

PULLBYTE

#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.

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)

Definition at line 414 of file inflate.c.

REVERSE

#define REVERSE

(

q

)

Value:

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

Definition at line 468 of file inflate.c.

UPDATE

#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

fixedtables()

void fixedtables

(

struct inflate_state FAR *

state

)

Definition at line 205 of file inflate.c.

inflate()

int ZEXPORT inflate	(	z_streamp	strm,
		int	flush
	)

Definition at line 554 of file inflate.c.

inflateCopy()

int ZEXPORT inflateCopy	(	z_streamp	dest,
		z_streamp	source
	)

Definition at line 1323 of file inflate.c.

inflateEnd()

int ZEXPORT inflateEnd

(

z_streamp

strm

)

Definition at line 1155 of file inflate.c.

inflateGetHeader()

int ZEXPORT inflateGetHeader	(	z_streamp	strm,
		gz_headerp	head
	)

Definition at line 1211 of file inflate.c.

inflateInit2_()

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

Definition at line 144 of file inflate.c.

inflateInit_()

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

Definition at line 187 of file inflate.c.

inflatePrime()

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

Definition at line 128 of file inflate.c.

inflateReset()

int ZEXPORT inflateReset

(

z_streamp

strm

)

Definition at line 103 of file inflate.c.

inflateSetDictionary()

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

Definition at line 1169 of file inflate.c.

inflateSync()

int ZEXPORT inflateSync

(

z_streamp

strm

)

Definition at line 1262 of file inflate.c.

inflateSyncPoint()

int ZEXPORT inflateSyncPoint

(

z_streamp

strm

)

Definition at line 1313 of file inflate.c.

OF() [1/3]

void fixedtables OF

(

(struct inflate_state FAR *state)

)

OF() [2/3]

unsigned syncsearch OF

(

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

)

OF() [3/3]

int updatewindow OF

(

(z_streamp strm, unsigned out)

)

syncsearch()

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

Definition at line 1239 of file inflate.c.

updatewindow()

int updatewindow	(	z_streamp	strm,
		unsigned	out
	)

Definition at line 323 of file inflate.c.