lib/zlib/inflate.h

83 struct inflate_state {  struct
84     z_streamp strm;             /* pointer back to this zlib stream */
85     inflate_mode mode;          /* current inflate mode */
86     int last;                   /* true if processing last block */
87     int wrap;                   /* bit 0 true for zlib, bit 1 true for gzip,
89     int havedict;               /* true if dictionary provided */
90     int flags;                  /* gzip header method and flags, 0 if zlib, or
92     unsigned dmax;              /* zlib header max distance (INFLATE_STRICT) */
93     unsigned long check;        /* protected copy of check value */
94     unsigned long total;        /* protected copy of output count */
95     gz_headerp head;            /* where to save gzip header information */
97     unsigned wbits;             /* log base 2 of requested window size */
98     unsigned wsize;             /* window size or zero if not using window */
99     unsigned whave;             /* valid bytes in the window */
100     unsigned wnext;             /* window write index */
101     unsigned char FAR *window;  /* allocated sliding window, if needed */
103     unsigned long hold;         /* input bit accumulator */
104     unsigned bits;              /* number of bits in "in" */
106     unsigned length;            /* literal or length of data to copy */
107     unsigned offset;            /* distance back to copy string from */
109     unsigned extra;             /* extra bits needed */
111     code const FAR *lencode;    /* starting table for length/literal codes */
112     code const FAR *distcode;   /* starting table for distance codes */
113     unsigned lenbits;           /* index bits for lencode */
114     unsigned distbits;          /* index bits for distcode */
116     unsigned ncode;             /* number of code length code lengths */
117     unsigned nlen;              /* number of length code lengths */
118     unsigned ndist;             /* number of distance code lengths */
119     unsigned have;              /* number of code lengths in lens[] */
120     code FAR *next;             /* next available space in codes[] */
121     unsigned short lens[320];   /* temporary storage for code lengths */
122     unsigned short work[288];   /* work area for code table building */
123     code codes[ENOUGH];         /* space for code tables */
124     int sane;                   /* if false, allow invalid distance too far */
125     int back;                   /* bits back of last unprocessed length/lit */
126     unsigned was;               /* initial length of match */