CbC/CbC_gcc: zlib/inflate.c annotate

author	kent <kent@cr.ie.u-ryukyu.ac.jp>
date	Sun, 07 Feb 2010 18:27:48 +0900
parents
children	04ced10e8804

rev	line source
51 ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	1 /* inflate.c -- zlib decompression
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	2 * Copyright (C) 1995-2005 Mark Adler
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	3 * For conditions of distribution and use, see copyright notice in zlib.h
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	4 */
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	5
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	6 /*
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	7 * Change history:
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	8 *
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	9 * 1.2.beta0 24 Nov 2002
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	10 * - First version -- complete rewrite of inflate to simplify code, avoid
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	11 * creation of window when not needed, minimize use of window when it is
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	12 * needed, make inffast.c even faster, implement gzip decoding, and to
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	13 * improve code readability and style over the previous zlib inflate code
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	14 *
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	15 * 1.2.beta1 25 Nov 2002
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	16 * - Use pointers for available input and output checking in inffast.c
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	17 * - Remove input and output counters in inffast.c
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	18 * - Change inffast.c entry and loop from avail_in >= 7 to >= 6
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	19 * - Remove unnecessary second byte pull from length extra in inffast.c
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	20 * - Unroll direct copy to three copies per loop in inffast.c
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	21 *
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	22 * 1.2.beta2 4 Dec 2002
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	23 * - Change external routine names to reduce potential conflicts
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	24 * - Correct filename to inffixed.h for fixed tables in inflate.c
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	25 * - Make hbuf[] unsigned char to match parameter type in inflate.c
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	26 * - Change strm->next_out[-state->offset] to *(strm->next_out - state->offset)
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	27 * to avoid negation problem on Alphas (64 bit) in inflate.c
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	28 *
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	29 * 1.2.beta3 22 Dec 2002
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	30 * - Add comments on state->bits assertion in inffast.c
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	31 * - Add comments on op field in inftrees.h
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	32 * - Fix bug in reuse of allocated window after inflateReset()
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	33 * - Remove bit fields--back to byte structure for speed
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	34 * - Remove distance extra == 0 check in inflate_fast()--only helps for lengths
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	35 * - Change post-increments to pre-increments in inflate_fast(), PPC biased?
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	36 * - Add compile time option, POSTINC, to use post-increments instead (Intel?)
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	37 * - Make MATCH copy in inflate() much faster for when inflate_fast() not used
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	38 * - Use local copies of stream next and avail values, as well as local bit
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	39 * buffer and bit count in inflate()--for speed when inflate_fast() not used
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	40 *
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	41 * 1.2.beta4 1 Jan 2003
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	42 * - Split ptr - 257 statements in inflate_table() to avoid compiler warnings
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	43 * - Move a comment on output buffer sizes from inffast.c to inflate.c
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	44 * - Add comments in inffast.c to introduce the inflate_fast() routine
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	45 * - Rearrange window copies in inflate_fast() for speed and simplification
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	46 * - Unroll last copy for window match in inflate_fast()
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	47 * - Use local copies of window variables in inflate_fast() for speed
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	48 * - Pull out common write == 0 case for speed in inflate_fast()
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	49 * - Make op and len in inflate_fast() unsigned for consistency
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	50 * - Add FAR to lcode and dcode declarations in inflate_fast()
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	51 * - Simplified bad distance check in inflate_fast()
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	52 * - Added inflateBackInit(), inflateBack(), and inflateBackEnd() in new
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	53 * source file infback.c to provide a call-back interface to inflate for
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	54 * programs like gzip and unzip -- uses window as output buffer to avoid
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	55 * window copying
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	56 *
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	57 * 1.2.beta5 1 Jan 2003
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	58 * - Improved inflateBack() interface to allow the caller to provide initial
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	59 * input in strm.
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	60 * - Fixed stored blocks bug in inflateBack()
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	61 *
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	62 * 1.2.beta6 4 Jan 2003
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	63 * - Added comments in inffast.c on effectiveness of POSTINC
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	64 * - Typecasting all around to reduce compiler warnings
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	65 * - Changed loops from while (1) or do {} while (1) to for (;;), again to
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	66 * make compilers happy
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	67 * - Changed type of window in inflateBackInit() to unsigned char *
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	68 *
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	69 * 1.2.beta7 27 Jan 2003
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	70 * - Changed many types to unsigned or unsigned short to avoid warnings
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	71 * - Added inflateCopy() function
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	72 *
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	73 * 1.2.0 9 Mar 2003
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	74 * - Changed inflateBack() interface to provide separate opaque descriptors
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	75 * for the in() and out() functions
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	76 * - Changed inflateBack() argument and in_func typedef to swap the length
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	77 * and buffer address return values for the input function
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	78 * - Check next_in and next_out for Z_NULL on entry to inflate()
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	79 *
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	80 * The history for versions after 1.2.0 are in ChangeLog in zlib distribution.
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	81 */
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	82
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	83 #include "zutil.h"
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	84 #include "inftrees.h"
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	85 #include "inflate.h"
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	86 #include "inffast.h"
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	87
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	88 #ifdef MAKEFIXED
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	89 # ifndef BUILDFIXED
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	90 # define BUILDFIXED
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	91 # endif
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	92 #endif
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	93
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	94 /* function prototypes */
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	95 local void fixedtables OF((struct inflate_state FAR *state));
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	96 local int updatewindow OF((z_streamp strm, unsigned out));
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	97 #ifdef BUILDFIXED
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	98 void makefixed OF((void));
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	99 #endif
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	100 local unsigned syncsearch OF((unsigned FAR have, unsigned char FAR buf,
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	101 unsigned len));
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	102
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	103 int ZEXPORT inflateReset(strm)
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	104 z_streamp strm;
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	105 {
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	106 struct inflate_state FAR *state;
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	107
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	108 if (strm == Z_NULL \|\| strm->state == Z_NULL) return Z_STREAM_ERROR;
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	109 state = (struct inflate_state FAR *)strm->state;
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	110 strm->total_in = strm->total_out = state->total = 0;
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	111 strm->msg = Z_NULL;
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	112 strm->adler = 1; /* to support ill-conceived Java test suite */
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	113 state->mode = HEAD;
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	114 state->last = 0;
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	115 state->havedict = 0;
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	116 state->dmax = 32768U;
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	117 state->head = Z_NULL;
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	118 state->wsize = 0;
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	119 state->whave = 0;
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	120 state->write = 0;
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	121 state->hold = 0;
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	122 state->bits = 0;
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	123 state->lencode = state->distcode = state->next = state->codes;
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	124 Tracev((stderr, "inflate: reset\n"));
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	125 return Z_OK;
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	126 }
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	127
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	128 int ZEXPORT inflatePrime(strm, bits, value)
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	129 z_streamp strm;
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	130 int bits;
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	131 int value;
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	132 {
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	133 struct inflate_state FAR *state;
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	134
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	135 if (strm == Z_NULL \|\| strm->state == Z_NULL) return Z_STREAM_ERROR;
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	136 state = (struct inflate_state FAR *)strm->state;
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	137 if (bits > 16 \|\| state->bits + bits > 32) return Z_STREAM_ERROR;
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	138 value &= (1L << bits) - 1;
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	139 state->hold += value << state->bits;
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	140 state->bits += bits;
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	141 return Z_OK;
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	142 }
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	143
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	144 int ZEXPORT inflateInit2_(strm, windowBits, version, stream_size)
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	145 z_streamp strm;
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	146 int windowBits;
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	147 const char *version;
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	148 int stream_size;
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	149 {
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	150 struct inflate_state FAR *state;
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	151
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	152 if (version == Z_NULL \|\| version[0] != ZLIB_VERSION[0] \|\|
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	153 stream_size != (int)(sizeof(z_stream)))
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	154 return Z_VERSION_ERROR;
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	155 if (strm == Z_NULL) return Z_STREAM_ERROR;
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	156 strm->msg = Z_NULL; /* in case we return an error */
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	157 if (strm->zalloc == (alloc_func)0) {
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	158 strm->zalloc = zcalloc;
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	159 strm->opaque = (voidpf)0;
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	160 }
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	161 if (strm->zfree == (free_func)0) strm->zfree = zcfree;
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	162 state = (struct inflate_state FAR *)
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	163 ZALLOC(strm, 1, sizeof(struct inflate_state));
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	164 if (state == Z_NULL) return Z_MEM_ERROR;
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	165 Tracev((stderr, "inflate: allocated\n"));
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	166 strm->state = (struct internal_state FAR *)state;
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	167 if (windowBits < 0) {
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	168 state->wrap = 0;
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	169 windowBits = -windowBits;
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	170 }
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	171 else {
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	172 state->wrap = (windowBits >> 4) + 1;
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	173 #ifdef GUNZIP
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	174 if (windowBits < 48) windowBits &= 15;
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	175 #endif
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	176 }
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	177 if (windowBits < 8 \|\| windowBits > 15) {
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	178 ZFREE(strm, state);
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	179 strm->state = Z_NULL;
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	180 return Z_STREAM_ERROR;
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	181 }
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	182 state->wbits = (unsigned)windowBits;
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	183 state->window = Z_NULL;
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	184 return inflateReset(strm);
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	185 }
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	186
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	187 int ZEXPORT inflateInit_(strm, version, stream_size)
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	188 z_streamp strm;
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	189 const char *version;
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	190 int stream_size;
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	191 {
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	192 return inflateInit2_(strm, DEF_WBITS, version, stream_size);
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	193 }
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	194
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	195 /*
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	196 Return state with length and distance decoding tables and index sizes set to
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	197 fixed code decoding. Normally this returns fixed tables from inffixed.h.
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	198 If BUILDFIXED is defined, then instead this routine builds the tables the
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	199 first time it's called, and returns those tables the first time and
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	200 thereafter. This reduces the size of the code by about 2K bytes, in
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	201 exchange for a little execution time. However, BUILDFIXED should not be
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	202 used for threaded applications, since the rewriting of the tables and virgin
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	203 may not be thread-safe.
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	204 */
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	205 local void fixedtables(state)
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	206 struct inflate_state FAR *state;
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	207 {
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	208 #ifdef BUILDFIXED
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	209 static int virgin = 1;
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	210 static code lenfix, distfix;
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	211 static code fixed[544];
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	212
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	213 /* build fixed huffman tables if first call (may not be thread safe) */
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	214 if (virgin) {
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	215 unsigned sym, bits;
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	216 static code *next;
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	217
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	218 /* literal/length table */
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	219 sym = 0;
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	220 while (sym < 144) state->lens[sym++] = 8;
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	221 while (sym < 256) state->lens[sym++] = 9;
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	222 while (sym < 280) state->lens[sym++] = 7;
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	223 while (sym < 288) state->lens[sym++] = 8;
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	224 next = fixed;
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	225 lenfix = next;
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	226 bits = 9;
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	227 inflate_table(LENS, state->lens, 288, &(next), &(bits), state->work);
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	228
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	229 /* distance table */
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	230 sym = 0;
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	231 while (sym < 32) state->lens[sym++] = 5;
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	232 distfix = next;
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	233 bits = 5;
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	234 inflate_table(DISTS, state->lens, 32, &(next), &(bits), state->work);
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	235
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	236 /* do this just once */
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	237 virgin = 0;
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	238 }
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	239 #else /* !BUILDFIXED */
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	240 # include "inffixed.h"
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	241 #endif /* BUILDFIXED */
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	242 state->lencode = lenfix;
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	243 state->lenbits = 9;
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	244 state->distcode = distfix;
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	245 state->distbits = 5;
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	246 }
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	247
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	248 #ifdef MAKEFIXED
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	249 #include <stdio.h>
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	250
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	251 /*
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	252 Write out the inffixed.h that is #include'd above. Defining MAKEFIXED also
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	253 defines BUILDFIXED, so the tables are built on the fly. makefixed() writes
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	254 those tables to stdout, which would be piped to inffixed.h. A small program
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	255 can simply call makefixed to do this:
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	256
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	257 void makefixed(void);
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	258
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	259 int main(void)
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	260 {
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	261 makefixed();
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	262 return 0;
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	263 }
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	264
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	265 Then that can be linked with zlib built with MAKEFIXED defined and run:
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	266
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	267 a.out > inffixed.h
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	268 */
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	269 void makefixed()
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	270 {
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	271 unsigned low, size;
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	272 struct inflate_state state;
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	273
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	274 fixedtables(&state);
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	275 puts(" /* inffixed.h -- table for decoding fixed codes");
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	276 puts(" * Generated automatically by makefixed().");
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	277 puts(" */");
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	278 puts("");
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	279 puts(" /* WARNING: this file should not be used by applications.");
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	280 puts(" It is part of the implementation of this library and is");
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	281 puts(" subject to change. Applications should only use zlib.h.");
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	282 puts(" */");
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	283 puts("");
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	284 size = 1U << 9;
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	285 printf(" static const code lenfix[%u] = {", size);
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	286 low = 0;
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	287 for (;;) {
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	288 if ((low % 7) == 0) printf("\n ");
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	289 printf("{%u,%u,%d}", state.lencode[low].op, state.lencode[low].bits,
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	290 state.lencode[low].val);
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	291 if (++low == size) break;
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	292 putchar(',');
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	293 }
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	294 puts("\n };");
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	295 size = 1U << 5;
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	296 printf("\n static const code distfix[%u] = {", size);
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	297 low = 0;
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	298 for (;;) {
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	299 if ((low % 6) == 0) printf("\n ");
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	300 printf("{%u,%u,%d}", state.distcode[low].op, state.distcode[low].bits,
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	301 state.distcode[low].val);
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	302 if (++low == size) break;
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	303 putchar(',');
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	304 }
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	305 puts("\n };");
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	306 }
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	307 #endif /* MAKEFIXED */
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	308
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	309 /*
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	310 Update the window with the last wsize (normally 32K) bytes written before
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	311 returning. If window does not exist yet, create it. This is only called
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	312 when a window is already in use, or when output has been written during this
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	313 inflate call, but the end of the deflate stream has not been reached yet.
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	314 It is also called to create a window for dictionary data when a dictionary
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	315 is loaded.
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	316
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	317 Providing output buffers larger than 32K to inflate() should provide a speed
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	318 advantage, since only the last 32K of output is copied to the sliding window
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	319 upon return from inflate(), and since all distances after the first 32K of
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	320 output will fall in the output data, making match copies simpler and faster.
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	321 The advantage may be dependent on the size of the processor's data caches.
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	322 */
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	323 local int updatewindow(strm, out)
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	324 z_streamp strm;
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	325 unsigned out;
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	326 {
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	327 struct inflate_state FAR *state;
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	328 unsigned copy, dist;
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	329
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	330 state = (struct inflate_state FAR *)strm->state;
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	331
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	332 /* if it hasn't been done already, allocate space for the window */
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	333 if (state->window == Z_NULL) {
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	334 state->window = (unsigned char FAR *)
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	335 ZALLOC(strm, 1U << state->wbits,
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	336 sizeof(unsigned char));
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	337 if (state->window == Z_NULL) return 1;
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	338 }
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	339
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	340 /* if window not in use yet, initialize */
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	341 if (state->wsize == 0) {
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	342 state->wsize = 1U << state->wbits;
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	343 state->write = 0;
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	344 state->whave = 0;
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	345 }
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	346
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	347 /* copy state->wsize or less output bytes into the circular window */
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	348 copy = out - strm->avail_out;
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	349 if (copy >= state->wsize) {
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	350 zmemcpy(state->window, strm->next_out - state->wsize, state->wsize);
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	351 state->write = 0;
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	352 state->whave = state->wsize;
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	353 }
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	354 else {
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	355 dist = state->wsize - state->write;
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	356 if (dist > copy) dist = copy;
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	357 zmemcpy(state->window + state->write, strm->next_out - copy, dist);
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	358 copy -= dist;
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	359 if (copy) {
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	360 zmemcpy(state->window, strm->next_out - copy, copy);
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	361 state->write = copy;
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	362 state->whave = state->wsize;
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	363 }
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	364 else {
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	365 state->write += dist;
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	366 if (state->write == state->wsize) state->write = 0;
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	367 if (state->whave < state->wsize) state->whave += dist;
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	368 }
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	369 }
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	370 return 0;
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	371 }
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	372
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	373 /* Macros for inflate(): */
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	374
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	375 /* check function to use adler32() for zlib or crc32() for gzip */
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	376 #ifdef GUNZIP
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	377 # define UPDATE(check, buf, len) \
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	378 (state->flags ? crc32(check, buf, len) : adler32(check, buf, len))
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	379 #else
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	380 # define UPDATE(check, buf, len) adler32(check, buf, len)
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	381 #endif
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	382
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	383 /* check macros for header crc */
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	384 #ifdef GUNZIP
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	385 # define CRC2(check, word) \
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	386 do { \
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	387 hbuf[0] = (unsigned char)(word); \
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	388 hbuf[1] = (unsigned char)((word) >> 8); \
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	389 check = crc32(check, hbuf, 2); \
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	390 } while (0)
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	391
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	392 # define CRC4(check, word) \
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	393 do { \
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	394 hbuf[0] = (unsigned char)(word); \
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	395 hbuf[1] = (unsigned char)((word) >> 8); \
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	396 hbuf[2] = (unsigned char)((word) >> 16); \
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	397 hbuf[3] = (unsigned char)((word) >> 24); \
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	398 check = crc32(check, hbuf, 4); \
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	399 } while (0)
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	400 #endif
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	401
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	402 /* Load registers with state in inflate() for speed */
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	403 #define LOAD() \
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	404 do { \
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	405 put = strm->next_out; \
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	406 left = strm->avail_out; \
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	407 next = strm->next_in; \
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	408 have = strm->avail_in; \
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	409 hold = state->hold; \
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	410 bits = state->bits; \
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	411 } while (0)
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	412
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	413 /* Restore state from registers in inflate() */
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	414 #define RESTORE() \
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	415 do { \
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	416 strm->next_out = put; \
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	417 strm->avail_out = left; \
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	418 strm->next_in = next; \
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	419 strm->avail_in = have; \
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	420 state->hold = hold; \
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	421 state->bits = bits; \
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	422 } while (0)
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	423
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	424 /* Clear the input bit accumulator */
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	425 #define INITBITS() \
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	426 do { \
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	427 hold = 0; \
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	428 bits = 0; \
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	429 } while (0)
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	430
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	431 /* Get a byte of input into the bit accumulator, or return from inflate()
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	432 if there is no input available. */
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	433 #define PULLBYTE() \
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	434 do { \
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	435 if (have == 0) goto inf_leave; \
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	436 have--; \
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	437 hold += (unsigned long)(*next++) << bits; \
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	438 bits += 8; \
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	439 } while (0)
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	440
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	441 /* Assure that there are at least n bits in the bit accumulator. If there is
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	442 not enough available input to do that, then return from inflate(). */
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	443 #define NEEDBITS(n) \
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	444 do { \
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	445 while (bits < (unsigned)(n)) \
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	446 PULLBYTE(); \
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	447 } while (0)
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	448
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	449 /* Return the low n bits of the bit accumulator (n < 16) */
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	450 #define BITS(n) \
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	451 ((unsigned)hold & ((1U << (n)) - 1))
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	452
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	453 /* Remove n bits from the bit accumulator */
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	454 #define DROPBITS(n) \
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	455 do { \
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	456 hold >>= (n); \
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	457 bits -= (unsigned)(n); \
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	458 } while (0)
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	459
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	460 /* Remove zero to seven bits as needed to go to a byte boundary */
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	461 #define BYTEBITS() \
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	462 do { \
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	463 hold >>= bits & 7; \
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	464 bits -= bits & 7; \
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	465 } while (0)
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	466
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	467 /* Reverse the bytes in a 32-bit value */
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	468 #define REVERSE(q) \
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	469 ((((q) >> 24) & 0xff) + (((q) >> 8) & 0xff00) + \
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	470 (((q) & 0xff00) << 8) + (((q) & 0xff) << 24))
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	471
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	472 /*
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	473 inflate() uses a state machine to process as much input data and generate as
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	474 much output data as possible before returning. The state machine is
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	475 structured roughly as follows:
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	476
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	477 for (;;) switch (state) {
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	478 ...
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	479 case STATEn:
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	480 if (not enough input data or output space to make progress)
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	481 return;
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	482 ... make progress ...
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	483 state = STATEm;
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	484 break;
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	485 ...
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	486 }
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	487
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	488 so when inflate() is called again, the same case is attempted again, and
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	489 if the appropriate resources are provided, the machine proceeds to the
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	490 next state. The NEEDBITS() macro is usually the way the state evaluates
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	491 whether it can proceed or should return. NEEDBITS() does the return if
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	492 the requested bits are not available. The typical use of the BITS macros
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	493 is:
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	494
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	495 NEEDBITS(n);
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	496 ... do something with BITS(n) ...
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	497 DROPBITS(n);
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	498
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	499 where NEEDBITS(n) either returns from inflate() if there isn't enough
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	500 input left to load n bits into the accumulator, or it continues. BITS(n)

51

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

1 /* inflate.c -- zlib decompression

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

3 * For conditions of distribution and use, see copyright notice in zlib.h

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

4 */

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

5

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

6 /*

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

7 * Change history:

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

8 *

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

9 * 1.2.beta0 24 Nov 2002

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

10 * - First version -- complete rewrite of inflate to simplify code, avoid

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

11 * creation of window when not needed, minimize use of window when it is

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

12 * needed, make inffast.c even faster, implement gzip decoding, and to

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

13 * improve code readability and style over the previous zlib inflate code

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

14 *

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

15 * 1.2.beta1 25 Nov 2002

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

16 * - Use pointers for available input and output checking in inffast.c

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

17 * - Remove input and output counters in inffast.c

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

18 * - Change inffast.c entry and loop from avail_in >= 7 to >= 6

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

19 * - Remove unnecessary second byte pull from length extra in inffast.c

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

20 * - Unroll direct copy to three copies per loop in inffast.c

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

21 *

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

22 * 1.2.beta2 4 Dec 2002

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

23 * - Change external routine names to reduce potential conflicts

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

24 * - Correct filename to inffixed.h for fixed tables in inflate.c

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

25 * - Make hbuf[] unsigned char to match parameter type in inflate.c

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

26 * - Change strm->next_out[-state->offset] to *(strm->next_out - state->offset)

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

27 * to avoid negation problem on Alphas (64 bit) in inflate.c

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

28 *

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

29 * 1.2.beta3 22 Dec 2002

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

30 * - Add comments on state->bits assertion in inffast.c

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

31 * - Add comments on op field in inftrees.h

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

32 * - Fix bug in reuse of allocated window after inflateReset()

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

33 * - Remove bit fields--back to byte structure for speed

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

34 * - Remove distance extra == 0 check in inflate_fast()--only helps for lengths

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

35 * - Change post-increments to pre-increments in inflate_fast(), PPC biased?

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

36 * - Add compile time option, POSTINC, to use post-increments instead (Intel?)

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

37 * - Make MATCH copy in inflate() much faster for when inflate_fast() not used

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

38 * - Use local copies of stream next and avail values, as well as local bit

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

39 * buffer and bit count in inflate()--for speed when inflate_fast() not used

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

40 *

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

41 * 1.2.beta4 1 Jan 2003

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

42 * - Split ptr - 257 statements in inflate_table() to avoid compiler warnings

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

43 * - Move a comment on output buffer sizes from inffast.c to inflate.c

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

44 * - Add comments in inffast.c to introduce the inflate_fast() routine

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

45 * - Rearrange window copies in inflate_fast() for speed and simplification

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

46 * - Unroll last copy for window match in inflate_fast()

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

47 * - Use local copies of window variables in inflate_fast() for speed

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

48 * - Pull out common write == 0 case for speed in inflate_fast()

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

49 * - Make op and len in inflate_fast() unsigned for consistency

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

50 * - Add FAR to lcode and dcode declarations in inflate_fast()

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

51 * - Simplified bad distance check in inflate_fast()

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

52 * - Added inflateBackInit(), inflateBack(), and inflateBackEnd() in new

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

53 * source file infback.c to provide a call-back interface to inflate for

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

54 * programs like gzip and unzip -- uses window as output buffer to avoid

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

55 * window copying

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

56 *

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

57 * 1.2.beta5 1 Jan 2003

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

58 * - Improved inflateBack() interface to allow the caller to provide initial

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

59 * input in strm.

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

60 * - Fixed stored blocks bug in inflateBack()

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

61 *

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

62 * 1.2.beta6 4 Jan 2003

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

63 * - Added comments in inffast.c on effectiveness of POSTINC

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

64 * - Typecasting all around to reduce compiler warnings

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

65 * - Changed loops from while (1) or do {} while (1) to for (;;), again to

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

66 * make compilers happy

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

67 * - Changed type of window in inflateBackInit() to unsigned char *

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

68 *

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

69 * 1.2.beta7 27 Jan 2003

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

70 * - Changed many types to unsigned or unsigned short to avoid warnings

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

71 * - Added inflateCopy() function

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

72 *

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

73 * 1.2.0 9 Mar 2003

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

74 * - Changed inflateBack() interface to provide separate opaque descriptors

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

75 * for the in() and out() functions

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

76 * - Changed inflateBack() argument and in_func typedef to swap the length

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

77 * and buffer address return values for the input function

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

78 * - Check next_in and next_out for Z_NULL on entry to inflate()

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

79 *

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

80 * The history for versions after 1.2.0 are in ChangeLog in zlib distribution.

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

81 */

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

82

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

83 #include "zutil.h"

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

84 #include "inftrees.h"

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

85 #include "inflate.h"

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

86 #include "inffast.h"

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

87

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

88 #ifdef MAKEFIXED

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

89 # ifndef BUILDFIXED

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

90 # define BUILDFIXED

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

91 # endif

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

92 #endif

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

93

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

94 /* function prototypes */

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

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

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

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

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

97 #ifdef BUILDFIXED

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

98 void makefixed OF((void));

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

99 #endif

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

100 local unsigned syncsearch OF((unsigned FAR *have, unsigned char FAR *buf,

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

101 unsigned len));

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

102

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

103 int ZEXPORT inflateReset(strm)

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

104 z_streamp strm;

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

105 {

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

106 struct inflate_state FAR *state;

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

107

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

108 if (strm == Z_NULL || strm->state == Z_NULL) return Z_STREAM_ERROR;

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

109 state = (struct inflate_state FAR *)strm->state;

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

110 strm->total_in = strm->total_out = state->total = 0;

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

111 strm->msg = Z_NULL;

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

112 strm->adler = 1; /* to support ill-conceived Java test suite */

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

113 state->mode = HEAD;

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

114 state->last = 0;

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

115 state->havedict = 0;

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

116 state->dmax = 32768U;

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

117 state->head = Z_NULL;

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

118 state->wsize = 0;

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

119 state->whave = 0;

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

120 state->write = 0;

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

121 state->hold = 0;

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

122 state->bits = 0;

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

123 state->lencode = state->distcode = state->next = state->codes;

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

124 Tracev((stderr, "inflate: reset\n"));

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

125 return Z_OK;

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

126 }

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

127

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

128 int ZEXPORT inflatePrime(strm, bits, value)

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

129 z_streamp strm;

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

130 int bits;

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

131 int value;

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

132 {

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

133 struct inflate_state FAR *state;

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

134

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

135 if (strm == Z_NULL || strm->state == Z_NULL) return Z_STREAM_ERROR;

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

136 state = (struct inflate_state FAR *)strm->state;

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

137 if (bits > 16 || state->bits + bits > 32) return Z_STREAM_ERROR;

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

138 value &= (1L << bits) - 1;

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

139 state->hold += value << state->bits;

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

140 state->bits += bits;

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

141 return Z_OK;

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

142 }

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

143

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

144 int ZEXPORT inflateInit2_(strm, windowBits, version, stream_size)

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

145 z_streamp strm;

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

146 int windowBits;

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

147 const char *version;

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

148 int stream_size;

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

149 {

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

150 struct inflate_state FAR *state;

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

151

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

152 if (version == Z_NULL || version[0] != ZLIB_VERSION[0] ||

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

153 stream_size != (int)(sizeof(z_stream)))

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

154 return Z_VERSION_ERROR;

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

155 if (strm == Z_NULL) return Z_STREAM_ERROR;

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

156 strm->msg = Z_NULL; /* in case we return an error */

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

157 if (strm->zalloc == (alloc_func)0) {

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

158 strm->zalloc = zcalloc;

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

159 strm->opaque = (voidpf)0;

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

160 }

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

161 if (strm->zfree == (free_func)0) strm->zfree = zcfree;

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

162 state = (struct inflate_state FAR *)

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

163 ZALLOC(strm, 1, sizeof(struct inflate_state));

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

164 if (state == Z_NULL) return Z_MEM_ERROR;

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

165 Tracev((stderr, "inflate: allocated\n"));

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

166 strm->state = (struct internal_state FAR *)state;

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

167 if (windowBits < 0) {

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

168 state->wrap = 0;

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

169 windowBits = -windowBits;

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

170 }

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

171 else {

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

172 state->wrap = (windowBits >> 4) + 1;

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

173 #ifdef GUNZIP

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

174 if (windowBits < 48) windowBits &= 15;

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

175 #endif

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

176 }

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

177 if (windowBits < 8 || windowBits > 15) {

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

178 ZFREE(strm, state);

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

179 strm->state = Z_NULL;

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

180 return Z_STREAM_ERROR;

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

181 }

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

182 state->wbits = (unsigned)windowBits;

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

183 state->window = Z_NULL;

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

184 return inflateReset(strm);

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

185 }

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

186

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

187 int ZEXPORT inflateInit_(strm, version, stream_size)

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

188 z_streamp strm;

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

189 const char *version;

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

190 int stream_size;

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

191 {

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

192 return inflateInit2_(strm, DEF_WBITS, version, stream_size);

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

193 }

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

194

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

195 /*

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

196 Return state with length and distance decoding tables and index sizes set to

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

197 fixed code decoding. Normally this returns fixed tables from inffixed.h.

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

198 If BUILDFIXED is defined, then instead this routine builds the tables the

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

199 first time it's called, and returns those tables the first time and

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

200 thereafter. This reduces the size of the code by about 2K bytes, in

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

201 exchange for a little execution time. However, BUILDFIXED should not be

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

202 used for threaded applications, since the rewriting of the tables and virgin

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

203 may not be thread-safe.

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

204 */

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

205 local void fixedtables(state)

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

206 struct inflate_state FAR *state;

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

207 {

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

208 #ifdef BUILDFIXED

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

209 static int virgin = 1;

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

210 static code *lenfix, *distfix;

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

211 static code fixed[544];

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

212

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

213 /* build fixed huffman tables if first call (may not be thread safe) */

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

214 if (virgin) {

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

215 unsigned sym, bits;

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

216 static code *next;

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

217

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

218 /* literal/length table */

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

219 sym = 0;

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

220 while (sym < 144) state->lens[sym++] = 8;

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

221 while (sym < 256) state->lens[sym++] = 9;

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

222 while (sym < 280) state->lens[sym++] = 7;

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

223 while (sym < 288) state->lens[sym++] = 8;

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

224 next = fixed;

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

225 lenfix = next;

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

226 bits = 9;

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

227 inflate_table(LENS, state->lens, 288, &(next), &(bits), state->work);

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

228

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

229 /* distance table */

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

230 sym = 0;

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

231 while (sym < 32) state->lens[sym++] = 5;

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

232 distfix = next;

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

233 bits = 5;

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

234 inflate_table(DISTS, state->lens, 32, &(next), &(bits), state->work);

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

235

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

236 /* do this just once */

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

237 virgin = 0;

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

238 }

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

239 #else /* !BUILDFIXED */

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

240 # include "inffixed.h"

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

241 #endif /* BUILDFIXED */

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

242 state->lencode = lenfix;

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

243 state->lenbits = 9;

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

244 state->distcode = distfix;

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

245 state->distbits = 5;

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

246 }

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

247

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

248 #ifdef MAKEFIXED

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

249 #include <stdio.h>

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

250

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

251 /*

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

252 Write out the inffixed.h that is #include'd above. Defining MAKEFIXED also

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

253 defines BUILDFIXED, so the tables are built on the fly. makefixed() writes

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

254 those tables to stdout, which would be piped to inffixed.h. A small program

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

255 can simply call makefixed to do this:

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

256

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

257 void makefixed(void);

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

258

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

259 int main(void)

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

260 {

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

261 makefixed();

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

262 return 0;

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

263 }

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

264

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

265 Then that can be linked with zlib built with MAKEFIXED defined and run:

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

266

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

267 a.out > inffixed.h

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

268 */

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

269 void makefixed()

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

270 {

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

271 unsigned low, size;

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

272 struct inflate_state state;

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

273

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

274 fixedtables(&state);

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

275 puts(" /* inffixed.h -- table for decoding fixed codes");

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

276 puts(" * Generated automatically by makefixed().");

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

277 puts(" */");

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

278 puts("");

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

279 puts(" /* WARNING: this file should *not* be used by applications.");

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

280 puts(" It is part of the implementation of this library and is");

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

281 puts(" subject to change. Applications should only use zlib.h.");

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

282 puts(" */");

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

283 puts("");

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

284 size = 1U << 9;

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

285 printf(" static const code lenfix[%u] = {", size);

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

286 low = 0;

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

287 for (;;) {

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

288 if ((low % 7) == 0) printf("\n ");

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

289 printf("{%u,%u,%d}", state.lencode[low].op, state.lencode[low].bits,

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

290 state.lencode[low].val);

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

291 if (++low == size) break;

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

292 putchar(',');

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

293 }

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

294 puts("\n };");

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

295 size = 1U << 5;

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

296 printf("\n static const code distfix[%u] = {", size);

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

297 low = 0;

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

298 for (;;) {

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

299 if ((low % 6) == 0) printf("\n ");

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

300 printf("{%u,%u,%d}", state.distcode[low].op, state.distcode[low].bits,

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

301 state.distcode[low].val);

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

302 if (++low == size) break;

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

303 putchar(',');

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

304 }

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

305 puts("\n };");

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

306 }

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

307 #endif /* MAKEFIXED */

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

308

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

309 /*

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

310 Update the window with the last wsize (normally 32K) bytes written before

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

311 returning. If window does not exist yet, create it. This is only called

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

312 when a window is already in use, or when output has been written during this

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

313 inflate call, but the end of the deflate stream has not been reached yet.

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

314 It is also called to create a window for dictionary data when a dictionary

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

315 is loaded.

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

316

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

317 Providing output buffers larger than 32K to inflate() should provide a speed

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

318 advantage, since only the last 32K of output is copied to the sliding window

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

319 upon return from inflate(), and since all distances after the first 32K of

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

320 output will fall in the output data, making match copies simpler and faster.

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

321 The advantage may be dependent on the size of the processor's data caches.

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

322 */

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

323 local int updatewindow(strm, out)

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

324 z_streamp strm;

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

325 unsigned out;

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

326 {

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

327 struct inflate_state FAR *state;

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

328 unsigned copy, dist;

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

329

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

330 state = (struct inflate_state FAR *)strm->state;

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

331

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

332 /* if it hasn't been done already, allocate space for the window */

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

333 if (state->window == Z_NULL) {

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

334 state->window = (unsigned char FAR *)

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

335 ZALLOC(strm, 1U << state->wbits,

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

336 sizeof(unsigned char));

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

337 if (state->window == Z_NULL) return 1;

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

338 }

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

339

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

340 /* if window not in use yet, initialize */

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

341 if (state->wsize == 0) {

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

342 state->wsize = 1U << state->wbits;

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

343 state->write = 0;

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

344 state->whave = 0;

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

345 }

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

346

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

347 /* copy state->wsize or less output bytes into the circular window */

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

348 copy = out - strm->avail_out;

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

349 if (copy >= state->wsize) {

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

350 zmemcpy(state->window, strm->next_out - state->wsize, state->wsize);

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

351 state->write = 0;

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

352 state->whave = state->wsize;

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

353 }

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

354 else {

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

355 dist = state->wsize - state->write;

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

356 if (dist > copy) dist = copy;

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

357 zmemcpy(state->window + state->write, strm->next_out - copy, dist);

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

358 copy -= dist;

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

359 if (copy) {

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

360 zmemcpy(state->window, strm->next_out - copy, copy);

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

361 state->write = copy;

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

362 state->whave = state->wsize;

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

363 }

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

364 else {

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

365 state->write += dist;

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

366 if (state->write == state->wsize) state->write = 0;

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

367 if (state->whave < state->wsize) state->whave += dist;

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

368 }

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

369 }

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

370 return 0;

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

371 }

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

372

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

373 /* Macros for inflate(): */

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

374

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

375 /* check function to use adler32() for zlib or crc32() for gzip */

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

376 #ifdef GUNZIP

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

377 # define UPDATE(check, buf, len) \

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

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

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

379 #else

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

380 # define UPDATE(check, buf, len) adler32(check, buf, len)

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

381 #endif

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

382

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

383 /* check macros for header crc */

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

384 #ifdef GUNZIP

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

385 # define CRC2(check, word) \

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

386 do { \

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

387 hbuf[0] = (unsigned char)(word); \

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

388 hbuf[1] = (unsigned char)((word) >> 8); \

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

389 check = crc32(check, hbuf, 2); \

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

390 } while (0)

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

391

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

392 # define CRC4(check, word) \

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

393 do { \

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

394 hbuf[0] = (unsigned char)(word); \

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

395 hbuf[1] = (unsigned char)((word) >> 8); \

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

396 hbuf[2] = (unsigned char)((word) >> 16); \

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

397 hbuf[3] = (unsigned char)((word) >> 24); \

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

398 check = crc32(check, hbuf, 4); \

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

399 } while (0)

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

400 #endif

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

401

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

402 /* Load registers with state in inflate() for speed */

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

403 #define LOAD() \

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

404 do { \

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

405 put = strm->next_out; \

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

406 left = strm->avail_out; \

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

407 next = strm->next_in; \

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

408 have = strm->avail_in; \

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

409 hold = state->hold; \

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

410 bits = state->bits; \

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

411 } while (0)

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

412

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

413 /* Restore state from registers in inflate() */

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

414 #define RESTORE() \

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

415 do { \

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

416 strm->next_out = put; \

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

417 strm->avail_out = left; \

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

418 strm->next_in = next; \

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

419 strm->avail_in = have; \

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

420 state->hold = hold; \

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

421 state->bits = bits; \

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

422 } while (0)

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

423

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

424 /* Clear the input bit accumulator */

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

425 #define INITBITS() \

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

426 do { \

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

427 hold = 0; \

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

428 bits = 0; \

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

429 } while (0)

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

430

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

431 /* Get a byte of input into the bit accumulator, or return from inflate()

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

432 if there is no input available. */

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

433 #define PULLBYTE() \

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

434 do { \

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

435 if (have == 0) goto inf_leave; \

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

436 have--; \

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

437 hold += (unsigned long)(*next++) << bits; \

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

438 bits += 8; \

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

439 } while (0)

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

440

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

441 /* Assure that there are at least n bits in the bit accumulator. If there is

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

442 not enough available input to do that, then return from inflate(). */

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

443 #define NEEDBITS(n) \

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

444 do { \

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

445 while (bits < (unsigned)(n)) \

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

446 PULLBYTE(); \

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

447 } while (0)

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

448

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

449 /* Return the low n bits of the bit accumulator (n < 16) */

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

450 #define BITS(n) \

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

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

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

452

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

453 /* Remove n bits from the bit accumulator */

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

454 #define DROPBITS(n) \

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

455 do { \

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

456 hold >>= (n); \

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

457 bits -= (unsigned)(n); \

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

458 } while (0)

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

459

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

460 /* Remove zero to seven bits as needed to go to a byte boundary */

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

461 #define BYTEBITS() \

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

462 do { \

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

463 hold >>= bits & 7; \

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

464 bits -= bits & 7; \

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

465 } while (0)

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

466

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

467 /* Reverse the bytes in a 32-bit value */

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

468 #define REVERSE(q) \

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

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

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

470 (((q) & 0xff00) << 8) + (((q) & 0xff) << 24))

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

471

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

472 /*

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

473 inflate() uses a state machine to process as much input data and generate as

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

474 much output data as possible before returning. The state machine is

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

475 structured roughly as follows:

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

476

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

477 for (;;) switch (state) {

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

478 ...

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

479 case STATEn:

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

480 if (not enough input data or output space to make progress)

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

481 return;

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

482 ... make progress ...

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

483 state = STATEm;

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

484 break;

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

485 ...

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

486 }

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

487

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

488 so when inflate() is called again, the same case is attempted again, and

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

489 if the appropriate resources are provided, the machine proceeds to the

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

490 next state. The NEEDBITS() macro is usually the way the state evaluates

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

491 whether it can proceed or should return. NEEDBITS() does the return if

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

492 the requested bits are not available. The typical use of the BITS macros

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

493 is:

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

494

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

495 NEEDBITS(n);

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

496 ... do something with BITS(n) ...

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

497 DROPBITS(n);

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

498

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

499 where NEEDBITS(n) either returns from inflate() if there isn't enough

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

500 input left to load n bits into the accumulator, or it continues. BITS(n)

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

501 gives the low n bits in the accumulator. When done, DROPBITS(n) drops

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

502 the low n bits off the accumulator. INITBITS() clears the accumulator

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

503 and sets the number of available bits to zero. BYTEBITS() discards just

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

504 enough bits to put the accumulator on a byte boundary. After BYTEBITS()

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

505 and a NEEDBITS(8), then BITS(8) would return the next byte in the stream.

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

506

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

507 NEEDBITS(n) uses PULLBYTE() to get an available byte of input, or to return

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

508 if there is no input available. The decoding of variable length codes uses

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

509 PULLBYTE() directly in order to pull just enough bytes to decode the next

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

510 code, and no more.

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

511

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

512 Some states loop until they get enough input, making sure that enough

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

513 state information is maintained to continue the loop where it left off

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

514 if NEEDBITS() returns in the loop. For example, want, need, and keep

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

515 would all have to actually be part of the saved state in case NEEDBITS()

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

516 returns:

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

517

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

518 case STATEw:

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

519 while (want < need) {

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

520 NEEDBITS(n);

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

521 keep[want++] = BITS(n);

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

522 DROPBITS(n);

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

523 }

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

524 state = STATEx;

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

525 case STATEx:

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

526

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

527 As shown above, if the next state is also the next case, then the break

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

528 is omitted.

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

529

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

530 A state may also return if there is not enough output space available to

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

531 complete that state. Those states are copying stored data, writing a

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

532 literal byte, and copying a matching string.

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

533

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

534 When returning, a "goto inf_leave" is used to update the total counters,

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

535 update the check value, and determine whether any progress has been made

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

536 during that inflate() call in order to return the proper return code.

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

537 Progress is defined as a change in either strm->avail_in or strm->avail_out.

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

538 When there is a window, goto inf_leave will update the window with the last

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

539 output written. If a goto inf_leave occurs in the middle of decompression

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

540 and there is no window currently, goto inf_leave will create one and copy

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

541 output to the window for the next call of inflate().

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

542

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

543 In this implementation, the flush parameter of inflate() only affects the

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

544 return code (per zlib.h). inflate() always writes as much as possible to

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

545 strm->next_out, given the space available and the provided input--the effect

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

546 documented in zlib.h of Z_SYNC_FLUSH. Furthermore, inflate() always defers

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

547 the allocation of and copying into a sliding window until necessary, which

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

548 provides the effect documented in zlib.h for Z_FINISH when the entire input

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

549 stream available. So the only thing the flush parameter actually does is:

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

550 when flush is set to Z_FINISH, inflate() cannot return Z_OK. Instead it

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

551 will return Z_BUF_ERROR if it has not reached the end of the stream.

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

552 */

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

553

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

554 int ZEXPORT inflate(strm, flush)

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

555 z_streamp strm;

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

556 int flush;

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

557 {

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

558 struct inflate_state FAR *state;

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

559 unsigned char FAR *next; /* next input */

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

560 unsigned char FAR *put; /* next output */

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

561 unsigned have, left; /* available input and output */

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

562 unsigned long hold; /* bit buffer */

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

563 unsigned bits; /* bits in bit buffer */

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

564 unsigned in, out; /* save starting available input and output */

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

565 unsigned copy; /* number of stored or match bytes to copy */

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

566 unsigned char FAR *from; /* where to copy match bytes from */

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

567 code this; /* current decoding table entry */

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

568 code last; /* parent table entry */

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

569 unsigned len; /* length to copy for repeats, bits to drop */

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

570 int ret; /* return code */

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

571 #ifdef GUNZIP

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

572 unsigned char hbuf[4]; /* buffer for gzip header crc calculation */

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

573 #endif

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

574 static const unsigned short order[19] = /* permutation of code lengths */

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

575 {16, 17, 18, 0, 8, 7, 9, 6, 10, 5, 11, 4, 12, 3, 13, 2, 14, 1, 15};

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

576

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

577 if (strm == Z_NULL || strm->state == Z_NULL || strm->next_out == Z_NULL ||

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

578 (strm->next_in == Z_NULL && strm->avail_in != 0))

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

579 return Z_STREAM_ERROR;

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

580

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

581 state = (struct inflate_state FAR *)strm->state;

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

582 if (state->mode == TYPE) state->mode = TYPEDO; /* skip check */

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

583 LOAD();

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

584 in = have;

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

585 out = left;

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

586 ret = Z_OK;

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

587 for (;;)

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

588 switch (state->mode) {

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

589 case HEAD:

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

590 if (state->wrap == 0) {

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

591 state->mode = TYPEDO;

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

592 break;

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

593 }

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

594 NEEDBITS(16);

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

595 #ifdef GUNZIP

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

596 if ((state->wrap & 2) && hold == 0x8b1f) { /* gzip header */

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

597 state->check = crc32(0L, Z_NULL, 0);

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

598 CRC2(state->check, hold);

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

599 INITBITS();

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

600 state->mode = FLAGS;

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

601 break;

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

602 }

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

603 state->flags = 0; /* expect zlib header */

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

604 if (state->head != Z_NULL)

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

605 state->head->done = -1;

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

606 if (!(state->wrap & 1) || /* check if zlib header allowed */

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

607 #else

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

608 if (

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

609 #endif

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

610 ((BITS(8) << 8) + (hold >> 8)) % 31) {

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

611 strm->msg = (char *)"incorrect header check";

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

612 state->mode = BAD;

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

613 break;

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

614 }

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

615 if (BITS(4) != Z_DEFLATED) {

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

616 strm->msg = (char *)"unknown compression method";

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

617 state->mode = BAD;

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

618 break;

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

619 }

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

620 DROPBITS(4);

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

621 len = BITS(4) + 8;

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

622 if (len > state->wbits) {

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

623 strm->msg = (char *)"invalid window size";

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

624 state->mode = BAD;

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

625 break;

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

626 }

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

627 state->dmax = 1U << len;

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

628 Tracev((stderr, "inflate: zlib header ok\n"));

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

629 strm->adler = state->check = adler32(0L, Z_NULL, 0);

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

630 state->mode = hold & 0x200 ? DICTID : TYPE;

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

631 INITBITS();

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

632 break;

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

633 #ifdef GUNZIP

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

634 case FLAGS:

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

635 NEEDBITS(16);

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

636 state->flags = (int)(hold);

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

637 if ((state->flags & 0xff) != Z_DEFLATED) {

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

638 strm->msg = (char *)"unknown compression method";

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

639 state->mode = BAD;

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

640 break;

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

641 }

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

642 if (state->flags & 0xe000) {

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

643 strm->msg = (char *)"unknown header flags set";

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

644 state->mode = BAD;

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

645 break;

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

646 }

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

647 if (state->head != Z_NULL)

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

648 state->head->text = (int)((hold >> 8) & 1);

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

649 if (state->flags & 0x0200) CRC2(state->check, hold);

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

650 INITBITS();

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

651 state->mode = TIME;

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

652 case TIME:

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

653 NEEDBITS(32);

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

654 if (state->head != Z_NULL)

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

655 state->head->time = hold;

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

656 if (state->flags & 0x0200) CRC4(state->check, hold);

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

657 INITBITS();

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

658 state->mode = OS;

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

659 case OS:

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

660 NEEDBITS(16);

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

661 if (state->head != Z_NULL) {

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

662 state->head->xflags = (int)(hold & 0xff);

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

663 state->head->os = (int)(hold >> 8);

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

664 }

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

665 if (state->flags & 0x0200) CRC2(state->check, hold);

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

666 INITBITS();

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

667 state->mode = EXLEN;

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

668 case EXLEN:

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

669 if (state->flags & 0x0400) {

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

670 NEEDBITS(16);

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

671 state->length = (unsigned)(hold);

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

672 if (state->head != Z_NULL)

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

673 state->head->extra_len = (unsigned)hold;

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

674 if (state->flags & 0x0200) CRC2(state->check, hold);

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

675 INITBITS();

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

676 }

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

677 else if (state->head != Z_NULL)

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

678 state->head->extra = Z_NULL;

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

679 state->mode = EXTRA;

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

680 case EXTRA:

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

681 if (state->flags & 0x0400) {

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

682 copy = state->length;

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

683 if (copy > have) copy = have;

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

684 if (copy) {

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

685 if (state->head != Z_NULL &&

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

686 state->head->extra != Z_NULL) {

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

687 len = state->head->extra_len - state->length;

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

688 zmemcpy(state->head->extra + len, next,

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

689 len + copy > state->head->extra_max ?

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

690 state->head->extra_max - len : copy);

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

691 }

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

692 if (state->flags & 0x0200)

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

693 state->check = crc32(state->check, next, copy);

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

694 have -= copy;

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

695 next += copy;

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

696 state->length -= copy;

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

697 }

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

698 if (state->length) goto inf_leave;

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

699 }

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

700 state->length = 0;

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

701 state->mode = NAME;

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

702 case NAME:

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

703 if (state->flags & 0x0800) {

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

704 if (have == 0) goto inf_leave;

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

705 copy = 0;

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

706 do {

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

707 len = (unsigned)(next[copy++]);

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

708 if (state->head != Z_NULL &&

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

709 state->head->name != Z_NULL &&

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

710 state->length < state->head->name_max)

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

711 state->head->name[state->length++] = len;

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

712 } while (len && copy < have);

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

713 if (state->flags & 0x0200)

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

714 state->check = crc32(state->check, next, copy);

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

715 have -= copy;

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

716 next += copy;

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

717 if (len) goto inf_leave;

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

718 }

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

719 else if (state->head != Z_NULL)

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

720 state->head->name = Z_NULL;

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

721 state->length = 0;

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

722 state->mode = COMMENT;

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

723 case COMMENT:

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

724 if (state->flags & 0x1000) {

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

725 if (have == 0) goto inf_leave;

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

726 copy = 0;

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

727 do {

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

728 len = (unsigned)(next[copy++]);

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

729 if (state->head != Z_NULL &&

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

730 state->head->comment != Z_NULL &&

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

731 state->length < state->head->comm_max)

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

732 state->head->comment[state->length++] = len;

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

733 } while (len && copy < have);

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

734 if (state->flags & 0x0200)

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

735 state->check = crc32(state->check, next, copy);

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

736 have -= copy;

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

737 next += copy;

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

738 if (len) goto inf_leave;

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

739 }

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

740 else if (state->head != Z_NULL)

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

741 state->head->comment = Z_NULL;

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

742 state->mode = HCRC;

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

743 case HCRC:

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

744 if (state->flags & 0x0200) {

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

745 NEEDBITS(16);

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

746 if (hold != (state->check & 0xffff)) {

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

747 strm->msg = (char *)"header crc mismatch";

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

748 state->mode = BAD;

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

749 break;

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

750 }

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

751 INITBITS();

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

752 }

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

753 if (state->head != Z_NULL) {

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

754 state->head->hcrc = (int)((state->flags >> 9) & 1);

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

755 state->head->done = 1;

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

756 }

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

757 strm->adler = state->check = crc32(0L, Z_NULL, 0);

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

758 state->mode = TYPE;

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

759 break;

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

760 #endif

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

761 case DICTID:

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

762 NEEDBITS(32);

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

763 strm->adler = state->check = REVERSE(hold);

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

764 INITBITS();

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

765 state->mode = DICT;

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

766 case DICT:

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

767 if (state->havedict == 0) {

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

768 RESTORE();

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

769 return Z_NEED_DICT;

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

770 }

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

771 strm->adler = state->check = adler32(0L, Z_NULL, 0);

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

772 state->mode = TYPE;

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

773 case TYPE:

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

774 if (flush == Z_BLOCK) goto inf_leave;

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

775 case TYPEDO:

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

776 if (state->last) {

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

777 BYTEBITS();

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

778 state->mode = CHECK;

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

779 break;

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

780 }

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

781 NEEDBITS(3);

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

782 state->last = BITS(1);

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

783 DROPBITS(1);

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

784 switch (BITS(2)) {

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

785 case 0: /* stored block */

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

786 Tracev((stderr, "inflate: stored block%s\n",

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

787 state->last ? " (last)" : ""));

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

788 state->mode = STORED;

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

789 break;

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

790 case 1: /* fixed block */

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

791 fixedtables(state);

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

792 Tracev((stderr, "inflate: fixed codes block%s\n",

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

793 state->last ? " (last)" : ""));

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

794 state->mode = LEN; /* decode codes */

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

795 break;

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

796 case 2: /* dynamic block */

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

797 Tracev((stderr, "inflate: dynamic codes block%s\n",

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

798 state->last ? " (last)" : ""));

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

799 state->mode = TABLE;

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

800 break;

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

801 case 3:

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

802 strm->msg = (char *)"invalid block type";

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

803 state->mode = BAD;

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

804 }

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

805 DROPBITS(2);

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

806 break;

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

807 case STORED:

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

808 BYTEBITS(); /* go to byte boundary */

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

809 NEEDBITS(32);

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

810 if ((hold & 0xffff) != ((hold >> 16) ^ 0xffff)) {

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

811 strm->msg = (char *)"invalid stored block lengths";

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

812 state->mode = BAD;

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

813 break;

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

814 }

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

815 state->length = (unsigned)hold & 0xffff;

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

816 Tracev((stderr, "inflate: stored length %u\n",

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

817 state->length));

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

818 INITBITS();

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

819 state->mode = COPY;

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

820 case COPY:

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

821 copy = state->length;

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

822 if (copy) {

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

823 if (copy > have) copy = have;

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

824 if (copy > left) copy = left;

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

825 if (copy == 0) goto inf_leave;

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

826 zmemcpy(put, next, copy);

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

827 have -= copy;

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

828 next += copy;

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

829 left -= copy;

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

830 put += copy;

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

831 state->length -= copy;

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

832 break;

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

833 }

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

834 Tracev((stderr, "inflate: stored end\n"));

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

835 state->mode = TYPE;

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

836 break;

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

837 case TABLE:

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

838 NEEDBITS(14);

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

839 state->nlen = BITS(5) + 257;

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

840 DROPBITS(5);

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

841 state->ndist = BITS(5) + 1;

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

842 DROPBITS(5);

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

843 state->ncode = BITS(4) + 4;

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

844 DROPBITS(4);

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

845 #ifndef PKZIP_BUG_WORKAROUND

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

846 if (state->nlen > 286 || state->ndist > 30) {

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

847 strm->msg = (char *)"too many length or distance symbols";

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

848 state->mode = BAD;

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

849 break;

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

850 }

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

851 #endif

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

852 Tracev((stderr, "inflate: table sizes ok\n"));

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

853 state->have = 0;

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

854 state->mode = LENLENS;

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

855 case LENLENS:

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

856 while (state->have < state->ncode) {

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

857 NEEDBITS(3);

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

858 state->lens[order[state->have++]] = (unsigned short)BITS(3);

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

859 DROPBITS(3);

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

860 }

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

861 while (state->have < 19)

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

862 state->lens[order[state->have++]] = 0;

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

863 state->next = state->codes;

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

864 state->lencode = (code const FAR *)(state->next);

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

865 state->lenbits = 7;

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

866 ret = inflate_table(CODES, state->lens, 19, &(state->next),

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

867 &(state->lenbits), state->work);

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

868 if (ret) {

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

869 strm->msg = (char *)"invalid code lengths set";

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

870 state->mode = BAD;

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

871 break;

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

872 }

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

873 Tracev((stderr, "inflate: code lengths ok\n"));

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

874 state->have = 0;

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

875 state->mode = CODELENS;

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

876 case CODELENS:

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

877 while (state->have < state->nlen + state->ndist) {

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

878 for (;;) {

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

879 this = state->lencode[BITS(state->lenbits)];

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

880 if ((unsigned)(this.bits) <= bits) break;

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

881 PULLBYTE();

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

882 }

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

883 if (this.val < 16) {

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

884 NEEDBITS(this.bits);

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

885 DROPBITS(this.bits);

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

886 state->lens[state->have++] = this.val;

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

887 }

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

888 else {

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

889 if (this.val == 16) {

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

890 NEEDBITS(this.bits + 2);

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

891 DROPBITS(this.bits);

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

892 if (state->have == 0) {

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

893 strm->msg = (char *)"invalid bit length repeat";

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

894 state->mode = BAD;

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

895 break;

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

896 }

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

897 len = state->lens[state->have - 1];

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

898 copy = 3 + BITS(2);

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

899 DROPBITS(2);

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

900 }

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

901 else if (this.val == 17) {

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

902 NEEDBITS(this.bits + 3);

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

903 DROPBITS(this.bits);

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

904 len = 0;

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

905 copy = 3 + BITS(3);

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

906 DROPBITS(3);

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

907 }

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

908 else {

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

909 NEEDBITS(this.bits + 7);

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

910 DROPBITS(this.bits);

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

911 len = 0;

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

912 copy = 11 + BITS(7);

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

913 DROPBITS(7);

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

914 }

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

915 if (state->have + copy > state->nlen + state->ndist) {

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

916 strm->msg = (char *)"invalid bit length repeat";

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

917 state->mode = BAD;

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

918 break;

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

919 }

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

920 while (copy--)

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

921 state->lens[state->have++] = (unsigned short)len;

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

922 }

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

923 }

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

924

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

925 /* handle error breaks in while */

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

926 if (state->mode == BAD) break;

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

927

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

928 /* build code tables */

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

929 state->next = state->codes;

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

930 state->lencode = (code const FAR *)(state->next);

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

931 state->lenbits = 9;

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

932 ret = inflate_table(LENS, state->lens, state->nlen, &(state->next),

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

933 &(state->lenbits), state->work);

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

934 if (ret) {

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

935 strm->msg = (char *)"invalid literal/lengths set";

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

936 state->mode = BAD;

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

937 break;

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

938 }

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

939 state->distcode = (code const FAR *)(state->next);

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

940 state->distbits = 6;

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

941 ret = inflate_table(DISTS, state->lens + state->nlen, state->ndist,

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

942 &(state->next), &(state->distbits), state->work);

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

943 if (ret) {

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

944 strm->msg = (char *)"invalid distances set";

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

945 state->mode = BAD;

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

946 break;

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

947 }

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

948 Tracev((stderr, "inflate: codes ok\n"));

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

949 state->mode = LEN;

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

950 case LEN:

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

951 if (have >= 6 && left >= 258) {

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

952 RESTORE();

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

953 inflate_fast(strm, out);

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

954 LOAD();

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

955 break;

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

956 }

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

957 for (;;) {

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

958 this = state->lencode[BITS(state->lenbits)];

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

959 if ((unsigned)(this.bits) <= bits) break;

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

960 PULLBYTE();

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

961 }

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

962 if (this.op && (this.op & 0xf0) == 0) {

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

963 last = this;

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

964 for (;;) {

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

965 this = state->lencode[last.val +

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

966 (BITS(last.bits + last.op) >> last.bits)];

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

967 if ((unsigned)(last.bits + this.bits) <= bits) break;

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

968 PULLBYTE();

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

969 }

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

970 DROPBITS(last.bits);

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

971 }

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

972 DROPBITS(this.bits);

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

973 state->length = (unsigned)this.val;

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

974 if ((int)(this.op) == 0) {

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

975 Tracevv((stderr, this.val >= 0x20 && this.val < 0x7f ?

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

976 "inflate: literal '%c'\n" :

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

977 "inflate: literal 0x%02x\n", this.val));

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

978 state->mode = LIT;

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

979 break;

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

980 }

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

981 if (this.op & 32) {

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

982 Tracevv((stderr, "inflate: end of block\n"));

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

983 state->mode = TYPE;

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

984 break;

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

985 }

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

986 if (this.op & 64) {

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

987 strm->msg = (char *)"invalid literal/length code";

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

988 state->mode = BAD;

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

989 break;

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

990 }

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

991 state->extra = (unsigned)(this.op) & 15;

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

992 state->mode = LENEXT;

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

993 case LENEXT:

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

994 if (state->extra) {

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

995 NEEDBITS(state->extra);

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

996 state->length += BITS(state->extra);

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

997 DROPBITS(state->extra);

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

998 }

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

999 Tracevv((stderr, "inflate: length %u\n", state->length));

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

1000 state->mode = DIST;

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

1001 case DIST:

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

1002 for (;;) {

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

1003 this = state->distcode[BITS(state->distbits)];

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

1004 if ((unsigned)(this.bits) <= bits) break;

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

1005 PULLBYTE();

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

1006 }

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

1007 if ((this.op & 0xf0) == 0) {

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

1008 last = this;

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

1009 for (;;) {

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

1010 this = state->distcode[last.val +

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

1011 (BITS(last.bits + last.op) >> last.bits)];

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

1012 if ((unsigned)(last.bits + this.bits) <= bits) break;

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

1013 PULLBYTE();

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

1014 }

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

1015 DROPBITS(last.bits);

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

1016 }

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

1017 DROPBITS(this.bits);

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

1018 if (this.op & 64) {

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

1019 strm->msg = (char *)"invalid distance code";

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

1020 state->mode = BAD;

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

1021 break;

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

1022 }

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

1023 state->offset = (unsigned)this.val;

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

1024 state->extra = (unsigned)(this.op) & 15;

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

1025 state->mode = DISTEXT;

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

1026 case DISTEXT:

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

1027 if (state->extra) {

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

1028 NEEDBITS(state->extra);

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

1029 state->offset += BITS(state->extra);

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

1030 DROPBITS(state->extra);

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

1031 }

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

1032 #ifdef INFLATE_STRICT

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

1033 if (state->offset > state->dmax) {

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

1034 strm->msg = (char *)"invalid distance too far back";

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

1035 state->mode = BAD;

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

1036 break;

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

1037 }

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

1038 #endif

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

1039 if (state->offset > state->whave + out - left) {

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

1040 strm->msg = (char *)"invalid distance too far back";

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

1041 state->mode = BAD;

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

1042 break;

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

1043 }

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

1044 Tracevv((stderr, "inflate: distance %u\n", state->offset));

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

1045 state->mode = MATCH;

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

1046 case MATCH:

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

1047 if (left == 0) goto inf_leave;

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

1048 copy = out - left;

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

1049 if (state->offset > copy) { /* copy from window */

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

1050 copy = state->offset - copy;

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

1051 if (copy > state->write) {

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

1052 copy -= state->write;

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

1053 from = state->window + (state->wsize - copy);

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

1054 }

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

1055 else

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

1056 from = state->window + (state->write - copy);

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

1057 if (copy > state->length) copy = state->length;

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

1058 }

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

1059 else { /* copy from output */

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

1060 from = put - state->offset;

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

1061 copy = state->length;

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

1062 }

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

1063 if (copy > left) copy = left;

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

1064 left -= copy;

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

1065 state->length -= copy;

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

1066 do {

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

1067 *put++ = *from++;

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

1068 } while (--copy);

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

1069 if (state->length == 0) state->mode = LEN;

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

1070 break;

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

1071 case LIT:

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

1072 if (left == 0) goto inf_leave;

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

1073 *put++ = (unsigned char)(state->length);

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

1074 left--;

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

1075 state->mode = LEN;

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

1076 break;

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

1077 case CHECK:

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

1078 if (state->wrap) {

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

1079 NEEDBITS(32);

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

1080 out -= left;

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

1081 strm->total_out += out;

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

1082 state->total += out;

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

1083 if (out)

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

1084 strm->adler = state->check =

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

1085 UPDATE(state->check, put - out, out);

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

1086 out = left;

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

1087 if ((

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

1088 #ifdef GUNZIP

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

1089 state->flags ? hold :

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

1090 #endif

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

1091 REVERSE(hold)) != state->check) {

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

1092 strm->msg = (char *)"incorrect data check";

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

1093 state->mode = BAD;

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

1094 break;

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

1095 }

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

1096 INITBITS();

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

1097 Tracev((stderr, "inflate: check matches trailer\n"));

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

1098 }

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

1099 #ifdef GUNZIP

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

1100 state->mode = LENGTH;

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

1101 case LENGTH:

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

1102 if (state->wrap && state->flags) {

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

1103 NEEDBITS(32);

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

1104 if (hold != (state->total & 0xffffffffUL)) {

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

1105 strm->msg = (char *)"incorrect length check";

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

1106 state->mode = BAD;

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

1107 break;

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

1108 }

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

1109 INITBITS();

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

1110 Tracev((stderr, "inflate: length matches trailer\n"));

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

1111 }

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

1112 #endif

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

1113 state->mode = DONE;

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

1114 case DONE:

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

1115 ret = Z_STREAM_END;

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

1116 goto inf_leave;

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

1117 case BAD:

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

1118 ret = Z_DATA_ERROR;

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

1119 goto inf_leave;

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

1120 case MEM:

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

1121 return Z_MEM_ERROR;

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

1122 case SYNC:

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

1123 default:

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

1124 return Z_STREAM_ERROR;

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

1125 }

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

1126

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

1127 /*

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

1128 Return from inflate(), updating the total counts and the check value.

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

1129 If there was no progress during the inflate() call, return a buffer

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

1130 error. Call updatewindow() to create and/or update the window state.

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

1131 Note: a memory error from inflate() is non-recoverable.

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

1132 */

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

1133 inf_leave:

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

1134 RESTORE();

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

1135 if (state->wsize || (state->mode < CHECK && out != strm->avail_out))

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

1136 if (updatewindow(strm, out)) {

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

1137 state->mode = MEM;

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

1138 return Z_MEM_ERROR;

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

1139 }

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

1140 in -= strm->avail_in;

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

1141 out -= strm->avail_out;

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

1142 strm->total_in += in;

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

1143 strm->total_out += out;

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

1144 state->total += out;

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

1145 if (state->wrap && out)

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

1146 strm->adler = state->check =

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

1147 UPDATE(state->check, strm->next_out - out, out);

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

1148 strm->data_type = state->bits + (state->last ? 64 : 0) +

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

1149 (state->mode == TYPE ? 128 : 0);

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

1150 if (((in == 0 && out == 0) || flush == Z_FINISH) && ret == Z_OK)

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

1151 ret = Z_BUF_ERROR;

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

1152 return ret;

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

1153 }

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

1154

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

1155 int ZEXPORT inflateEnd(strm)

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

1156 z_streamp strm;

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

1157 {

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

1158 struct inflate_state FAR *state;

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

1159 if (strm == Z_NULL || strm->state == Z_NULL || strm->zfree == (free_func)0)

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

1160 return Z_STREAM_ERROR;

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

1161 state = (struct inflate_state FAR *)strm->state;

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

1162 if (state->window != Z_NULL) ZFREE(strm, state->window);

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

1163 ZFREE(strm, strm->state);

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

1164 strm->state = Z_NULL;

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

1165 Tracev((stderr, "inflate: end\n"));

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

1166 return Z_OK;

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

1167 }

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

1168

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

1169 int ZEXPORT inflateSetDictionary(strm, dictionary, dictLength)

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

1170 z_streamp strm;

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

1171 const Bytef *dictionary;

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

1172 uInt dictLength;

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

1173 {

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

1174 struct inflate_state FAR *state;

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

1175 unsigned long id;

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

1176

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

1177 /* check state */

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

1178 if (strm == Z_NULL || strm->state == Z_NULL) return Z_STREAM_ERROR;

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

1179 state = (struct inflate_state FAR *)strm->state;

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

1180 if (state->wrap != 0 && state->mode != DICT)

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

1181 return Z_STREAM_ERROR;

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

1182

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

1183 /* check for correct dictionary id */

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

1184 if (state->mode == DICT) {

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

1185 id = adler32(0L, Z_NULL, 0);

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

1186 id = adler32(id, dictionary, dictLength);

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

1187 if (id != state->check)

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

1188 return Z_DATA_ERROR;

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

1189 }

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

1190

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

1191 /* copy dictionary to window */

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

1192 if (updatewindow(strm, strm->avail_out)) {

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

1193 state->mode = MEM;

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

1194 return Z_MEM_ERROR;

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

1195 }

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

1196 if (dictLength > state->wsize) {

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

1197 zmemcpy(state->window, dictionary + dictLength - state->wsize,

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

1198 state->wsize);

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

1199 state->whave = state->wsize;

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

1200 }

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

1201 else {

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

1202 zmemcpy(state->window + state->wsize - dictLength, dictionary,

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

1203 dictLength);

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

1204 state->whave = dictLength;

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

1205 }

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

1206 state->havedict = 1;

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

1207 Tracev((stderr, "inflate: dictionary set\n"));

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

1208 return Z_OK;

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

1209 }

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

1210

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

1211 int ZEXPORT inflateGetHeader(strm, head)

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

1212 z_streamp strm;

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

1213 gz_headerp head;

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

1214 {

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

1215 struct inflate_state FAR *state;

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

1216

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

1217 /* check state */

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

1218 if (strm == Z_NULL || strm->state == Z_NULL) return Z_STREAM_ERROR;

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

1219 state = (struct inflate_state FAR *)strm->state;

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

1220 if ((state->wrap & 2) == 0) return Z_STREAM_ERROR;

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

1221

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

1222 /* save header structure */

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

1223 state->head = head;

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

1224 head->done = 0;

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

1225 return Z_OK;

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

1226 }

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

1227

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

1228 /*

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

1229 Search buf[0..len-1] for the pattern: 0, 0, 0xff, 0xff. Return when found

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

1230 or when out of input. When called, *have is the number of pattern bytes

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

1231 found in order so far, in 0..3. On return *have is updated to the new

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

1232 state. If on return *have equals four, then the pattern was found and the

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

1233 return value is how many bytes were read including the last byte of the

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

1234 pattern. If *have is less than four, then the pattern has not been found

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

1235 yet and the return value is len. In the latter case, syncsearch() can be

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

1236 called again with more data and the *have state. *have is initialized to

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

1237 zero for the first call.

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

1238 */

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

1239 local unsigned syncsearch(have, buf, len)

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

1240 unsigned FAR *have;

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

1241 unsigned char FAR *buf;

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

1242 unsigned len;

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

1243 {

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

1244 unsigned got;

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

1245 unsigned next;

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

1246

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

1247 got = *have;

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

1248 next = 0;

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

1249 while (next < len && got < 4) {

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

1250 if ((int)(buf[next]) == (got < 2 ? 0 : 0xff))

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

1251 got++;

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

1252 else if (buf[next])

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

1253 got = 0;

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

1254 else

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

1255 got = 4 - got;

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

1256 next++;

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

1257 }

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

1258 *have = got;

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

1259 return next;

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

1260 }

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

1261

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

1262 int ZEXPORT inflateSync(strm)

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

1263 z_streamp strm;

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

1264 {

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

1265 unsigned len; /* number of bytes to look at or looked at */

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

1266 unsigned long in, out; /* temporary to save total_in and total_out */

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

1267 unsigned char buf[4]; /* to restore bit buffer to byte string */

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

1268 struct inflate_state FAR *state;

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

1269

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

1270 /* check parameters */

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

1271 if (strm == Z_NULL || strm->state == Z_NULL) return Z_STREAM_ERROR;

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

1272 state = (struct inflate_state FAR *)strm->state;

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

1273 if (strm->avail_in == 0 && state->bits < 8) return Z_BUF_ERROR;

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

1274

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

1275 /* if first time, start search in bit buffer */

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

1276 if (state->mode != SYNC) {

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

1277 state->mode = SYNC;

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

1278 state->hold <<= state->bits & 7;

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

1279 state->bits -= state->bits & 7;

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

1280 len = 0;

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

1281 while (state->bits >= 8) {

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

1282 buf[len++] = (unsigned char)(state->hold);

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

1283 state->hold >>= 8;

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

1284 state->bits -= 8;

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

1285 }

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

1286 state->have = 0;

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

1287 syncsearch(&(state->have), buf, len);

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

1288 }

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

1289

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

1290 /* search available input */

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

1291 len = syncsearch(&(state->have), strm->next_in, strm->avail_in);

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

1292 strm->avail_in -= len;

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

1293 strm->next_in += len;

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

1294 strm->total_in += len;

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

1295

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

1296 /* return no joy or set up to restart inflate() on a new block */

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

1297 if (state->have != 4) return Z_DATA_ERROR;

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

1298 in = strm->total_in; out = strm->total_out;

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

1299 inflateReset(strm);

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

1300 strm->total_in = in; strm->total_out = out;

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

1301 state->mode = TYPE;

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

1302 return Z_OK;

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

1303 }

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

1304

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

1305 /*

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

1306 Returns true if inflate is currently at the end of a block generated by

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

1307 Z_SYNC_FLUSH or Z_FULL_FLUSH. This function is used by one PPP

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

1308 implementation to provide an additional safety check. PPP uses

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

1309 Z_SYNC_FLUSH but removes the length bytes of the resulting empty stored

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

1310 block. When decompressing, PPP checks that at the end of input packet,

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

1311 inflate is waiting for these length bytes.

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

1312 */

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

1313 int ZEXPORT inflateSyncPoint(strm)

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

1314 z_streamp strm;

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

1315 {

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

1316 struct inflate_state FAR *state;

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

1317

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

1318 if (strm == Z_NULL || strm->state == Z_NULL) return Z_STREAM_ERROR;

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

1319 state = (struct inflate_state FAR *)strm->state;

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

1320 return state->mode == STORED && state->bits == 0;

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

1321 }

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

1322

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

1323 int ZEXPORT inflateCopy(dest, source)

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

1324 z_streamp dest;

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

1325 z_streamp source;

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

1326 {

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

1327 struct inflate_state FAR *state;

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

1328 struct inflate_state FAR *copy;

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

1329 unsigned char FAR *window;

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

1330 unsigned wsize;

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

1331

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

1332 /* check input */

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

1333 if (dest == Z_NULL || source == Z_NULL || source->state == Z_NULL ||

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

1334 source->zalloc == (alloc_func)0 || source->zfree == (free_func)0)

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

1335 return Z_STREAM_ERROR;

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

1336 state = (struct inflate_state FAR *)source->state;

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

1337

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

1338 /* allocate space */

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

1339 copy = (struct inflate_state FAR *)

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

1340 ZALLOC(source, 1, sizeof(struct inflate_state));

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

1341 if (copy == Z_NULL) return Z_MEM_ERROR;

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

1342 window = Z_NULL;

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

1343 if (state->window != Z_NULL) {

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

1344 window = (unsigned char FAR *)

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

1345 ZALLOC(source, 1U << state->wbits, sizeof(unsigned char));

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

1346 if (window == Z_NULL) {

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

1347 ZFREE(source, copy);

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

1348 return Z_MEM_ERROR;

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

1349 }

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

1350 }

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

1351

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

1352 /* copy state */

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

1353 zmemcpy(dest, source, sizeof(z_stream));

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

1354 zmemcpy(copy, state, sizeof(struct inflate_state));

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

1355 if (state->lencode >= state->codes &&

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

1356 state->lencode <= state->codes + ENOUGH - 1) {

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

1357 copy->lencode = copy->codes + (state->lencode - state->codes);

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

1358 copy->distcode = copy->codes + (state->distcode - state->codes);

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

1359 }

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

1360 copy->next = copy->codes + (state->next - state->codes);

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

1361 if (window != Z_NULL) {

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

1362 wsize = 1U << state->wbits;

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

1363 zmemcpy(window, state->window, wsize);

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

1364 }

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

1365 copy->window = window;

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

1366 dest->state = (struct internal_state FAR *)copy;

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

1367 return Z_OK;

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

1368 }

Mercurial > hg > CbC > CbC_gcc

annotate zlib/inflate.c @ 51:ae3a4bfb450b