infback.c File Reference

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

Include dependency graph for infback.c:

Go to the source code of this file.

Macros
#define	LOAD()
#define	RESTORE()
#define	INITBITS()
#define	PULL()
#define	PULLBYTE()
#define	NEEDBITS(n)
#define	BITS(n)    ((unsigned)hold & ((1U << (n)) - 1))
#define	DROPBITS(n)
#define	BYTEBITS()
#define	ROOM()

Functions
local void fixedtables	OF ((struct inflate_state FAR *state))
int ZEXPORT	inflateBackInit_ (z_streamp strm, int windowBits, unsigned char FAR *window, const char *version, int stream_size)
local void	fixedtables (struct inflate_state FAR *state)
int ZEXPORT	inflateBack (z_streamp strm, in_func in, void FAR *in_desc, out_func out, void FAR *out_desc)
int ZEXPORT	inflateBackEnd (z_streamp strm)

Macro Definition Documentation

BITS

#define BITS

(

n

)

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

Definition at line 190 of file infback.c.

BYTEBITS

#define BYTEBITS

(

)

Value:

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

Definition at line 201 of file infback.c.

DROPBITS

#define DROPBITS

(

n

)

Value:

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

Definition at line 194 of file infback.c.

INITBITS

#define INITBITS

(

)

Value:

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

Definition at line 150 of file infback.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 128 of file infback.c.

NEEDBITS

#define NEEDBITS

(

n

)

Value:

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

Definition at line 183 of file infback.c.

PULL

#define PULL

(

)

Value:

    do { \
        if (have == 0) { \
            have = in(in_desc, &next); \
            if (have == 0) { \
                next = Z_NULL; \
                ret = Z_BUF_ERROR; \
                goto inf_leave; \
            } \
        } \
    } while (0)

Definition at line 158 of file infback.c.

PULLBYTE

#define PULLBYTE

(

)

Value:

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

Definition at line 172 of file infback.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 139 of file infback.c.

ROOM

#define ROOM

(

)

Value:

    do { \
        if (left == 0) { \
            put = state->window; \
            left = state->wsize; \
            state->whave = left; \
            if (out(out_desc, put, left)) { \
                ret = Z_BUF_ERROR; \
                goto inf_leave; \
            } \
        } \
    } while (0)

Definition at line 210 of file infback.c.

Function Documentation

fixedtables()

local void fixedtables

(

struct inflate_state FAR *

state

)

Definition at line 82 of file infback.c.

References inflate_state::bits, inflate_state::distbits, inflate_state::distcode, distfix, DISTS, inflate_table(), inflate_state::lenbits, inflate_state::lencode, lenfix, inflate_state::lens, LENS, inflate_state::next, and inflate_state::work.

Referenced by inflateBack().

inflateBack()

int ZEXPORT inflateBack	(	z_streamp	strm,
		in_func	in,
		void FAR *	in_desc,
		out_func	out,
		void FAR *	out_desc
	)

Definition at line 250 of file infback.c.

References BAD, BITS, inflate_state::bits, code::bits, BYTEBITS, inflate_state::codes, CODES, inflate_state::distbits, inflate_state::distcode, DISTS, DONE, DROPBITS, inflate_state::extra, FAR, fixedtables(), inflate_state::have, inflate_state::hold, inflate_fast(), inflate_table(), INITBITS, inflate_state::last, LEN, inflate_state::lenbits, inflate_state::lencode, inflate_state::length, inflate_state::lens, LENS, LOAD, inflate_state::mode, inflate_state::ncode, inflate_state::ndist, NEEDBITS, inflate_state::next, inflate_state::nlen, inflate_state::offset, code::op, out, PULL, PULLBYTE, RESTORE, ROOM, STORED, inflate_state::strm, TABLE, Tracev, Tracevv, TYPE, code::val, inflate_state::whave, inflate_state::window, inflate_state::work, inflate_state::wsize, Z_BUF_ERROR, z_const, Z_DATA_ERROR, Z_NULL, Z_STREAM_END, Z_STREAM_ERROR, and zmemcpy().

inflateBackEnd()

int ZEXPORT inflateBackEnd

(

z_streamp

strm

)

Definition at line 631 of file infback.c.

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

inflateBackInit_()

int ZEXPORT inflateBackInit_	(	z_streamp	strm,
		int	windowBits,
		unsigned char FAR *	window,
		const char *	version,
		int	stream_size
	)

Definition at line 28 of file infback.c.

References inflate_state::dmax, FAR, inflate_state::strm, Tracev, inflate_state::wbits, inflate_state::whave, inflate_state::window, inflate_state::wnext, inflate_state::wsize, Z_MEM_ERROR, Z_NULL, Z_OK, Z_STREAM_ERROR, Z_VERSION_ERROR, ZALLOC, zcalloc(), zcfree(), and ZLIB_VERSION.

OF()

local void fixedtables OF

(

(struct inflate_state FAR *state)

)