/* inflate9.h -- internal inflate state definition

 * Copyright (C) 1995-2003 Mark Adler

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

 */

/* WARNING: this file should *not* be used by applications. It is

   part of the implementation of the compression library and is

   subject to change. Applications should only use zlib.h.

 */

/* Possible inflate modes between inflate() calls */

typedef enum {

        TYPE,       /* i: waiting for type bits, including last-flag bit */

        STORED,     /* i: waiting for stored size (length and complement) */

        TABLE,      /* i: waiting for dynamic block table lengths */

            LEN,        /* i: waiting for length/lit code */

    DONE,       /* finished check, done -- remain here until reset */

    BAD         /* got a data error -- remain here until reset */

} inflate_mode;

/*

    State transitions between above modes -

    (most modes can go to the BAD mode -- not shown for clarity)

    Read deflate blocks:

            TYPE -> STORED or TABLE or LEN or DONE

            STORED -> TYPE

            TABLE -> LENLENS -> CODELENS -> LEN

    Read deflate codes:

                LEN -> LEN or TYPE

 */

/* state maintained between inflate() calls.  Approximately 7K bytes. */

struct inflate_state {

        /* sliding window */

    unsigned char FAR *window;  /* allocated sliding window, if needed */

        /* dynamic table building */

    unsigned ncode;             /* number of code length code lengths */

    unsigned nlen;              /* number of length code lengths */

    unsigned ndist;             /* number of distance code lengths */

    unsigned have;              /* number of code lengths in lens[] */

    code FAR *next;             /* next available space in codes[] */

    unsigned short lens[320];   /* temporary storage for code lengths */

    unsigned short work[288];   /* work area for code table building */

    code codes[ENOUGH];         /* space for code tables */

};