lib/zlib_inflate/inflate.h

4 /* inflate.h -- internal inflate state definition
5  * Copyright (C) 1995-2004 Mark Adler
29         TYPE,       /* i: waiting for type bits, including last-flag bit */
30         TYPEDO,     /* i: same, but skip check to exit inflate on new block */
32         COPY,       /* i/o: waiting for input or output to copy stored block */  enumerator
33         TABLE,      /* i: waiting for dynamic block table lengths */
40             MATCH,      /* o: waiting for output space to copy string */
42     CHECK,      /* i: waiting for 32-bit check value */
43     LENGTH,     /* i: waiting for 32-bit length (gzip) */
44     DONE,       /* finished check, done -- remain here until reset */
45     BAD,        /* got a data error -- remain here until reset */
46     MEM,        /* got an inflate() memory error -- remain here until reset */
51     State transitions between above modes -
53     (most modes can go to the BAD or MEM mode -- not shown for clarity)
56         HEAD -> (gzip) or (zlib)
57         (gzip) -> FLAGS -> TIME -> OS -> EXLEN -> EXTRA -> NAME
58         NAME -> COMMENT -> HCRC -> TYPE
59         (zlib) -> DICTID or TYPE
60         DICTID -> DICT -> TYPE
62             TYPE -> STORED or TABLE or LEN or CHECK
63             STORED -> COPY -> TYPE
64             TABLE -> LENLENS -> CODELENS -> LEN
66                 LEN -> LENEXT or LIT or TYPE
67                 LENEXT -> DIST -> DISTEXT -> MATCH -> LEN
68                 LIT -> LEN
70         CHECK -> LENGTH -> DONE
76     int last;                   /* true if processing last block */
81     unsigned long check;        /* protected copy of check value */
82     unsigned long total;        /* protected copy of output count */
93         /* for string and stored block copying */
94     unsigned length;            /* literal or length of data to copy */
95     unsigned offset;            /* distance back to copy string from */
114 /* Reverse the bytes in a 32-bit value */