Chris@4: /* zutil.h -- internal interface and configuration of the compression library
Chris@4:  * Copyright (C) 1995-2012 Jean-loup Gailly.
Chris@4:  * For conditions of distribution and use, see copyright notice in zlib.h
Chris@4:  */
Chris@4: 
Chris@4: /* WARNING: this file should *not* be used by applications. It is
Chris@4:    part of the implementation of the compression library and is
Chris@4:    subject to change. Applications should only use zlib.h.
Chris@4:  */
Chris@4: 
Chris@4: /* @(#) $Id$ */
Chris@4: 
Chris@4: #ifndef ZUTIL_H
Chris@4: #define ZUTIL_H
Chris@4: 
Chris@4: #ifdef HAVE_HIDDEN
Chris@4: #  define ZLIB_INTERNAL __attribute__((visibility ("hidden")))
Chris@4: #else
Chris@4: #  define ZLIB_INTERNAL
Chris@4: #endif
Chris@4: 
Chris@4: #include "zlib.h"
Chris@4: 
Chris@4: #if defined(STDC) && !defined(Z_SOLO)
Chris@4: #  if !(defined(_WIN32_WCE) && defined(_MSC_VER))
Chris@4: #    include <stddef.h>
Chris@4: #  endif
Chris@4: #  include <string.h>
Chris@4: #  include <stdlib.h>
Chris@4: #endif
Chris@4: 
Chris@4: #ifdef Z_SOLO
Chris@4:    typedef long ptrdiff_t;  /* guess -- will be caught if guess is wrong */
Chris@4: #endif
Chris@4: 
Chris@4: #ifndef local
Chris@4: #  define local static
Chris@4: #endif
Chris@4: /* compile with -Dlocal if your debugger can't find static symbols */
Chris@4: 
Chris@4: typedef unsigned char  uch;
Chris@4: typedef uch FAR uchf;
Chris@4: typedef unsigned short ush;
Chris@4: typedef ush FAR ushf;
Chris@4: typedef unsigned long  ulg;
Chris@4: 
Chris@4: extern const char * const z_errmsg[10]; /* indexed by 2-zlib_error */
Chris@4: /* (size given to avoid silly warnings with Visual C++) */
Chris@4: 
Chris@4: #define ERR_MSG(err) z_errmsg[Z_NEED_DICT-(err)]
Chris@4: 
Chris@4: #define ERR_RETURN(strm,err) \
Chris@4:   return (strm->msg = (char*)ERR_MSG(err), (err))
Chris@4: /* To be used only when the state is known to be valid */
Chris@4: 
Chris@4:         /* common constants */
Chris@4: 
Chris@4: #ifndef DEF_WBITS
Chris@4: #  define DEF_WBITS MAX_WBITS
Chris@4: #endif
Chris@4: /* default windowBits for decompression. MAX_WBITS is for compression only */
Chris@4: 
Chris@4: #if MAX_MEM_LEVEL >= 8
Chris@4: #  define DEF_MEM_LEVEL 8
Chris@4: #else
Chris@4: #  define DEF_MEM_LEVEL  MAX_MEM_LEVEL
Chris@4: #endif
Chris@4: /* default memLevel */
Chris@4: 
Chris@4: #define STORED_BLOCK 0
Chris@4: #define STATIC_TREES 1
Chris@4: #define DYN_TREES    2
Chris@4: /* The three kinds of block type */
Chris@4: 
Chris@4: #define MIN_MATCH  3
Chris@4: #define MAX_MATCH  258
Chris@4: /* The minimum and maximum match lengths */
Chris@4: 
Chris@4: #define PRESET_DICT 0x20 /* preset dictionary flag in zlib header */
Chris@4: 
Chris@4:         /* target dependencies */
Chris@4: 
Chris@4: #if defined(MSDOS) || (defined(WINDOWS) && !defined(WIN32))
Chris@4: #  define OS_CODE  0x00
Chris@4: #  ifndef Z_SOLO
Chris@4: #    if defined(__TURBOC__) || defined(__BORLANDC__)
Chris@4: #      if (__STDC__ == 1) && (defined(__LARGE__) || defined(__COMPACT__))
Chris@4:          /* Allow compilation with ANSI keywords only enabled */
Chris@4:          void _Cdecl farfree( void *block );
Chris@4:          void *_Cdecl farmalloc( unsigned long nbytes );
Chris@4: #      else
Chris@4: #        include <alloc.h>
Chris@4: #      endif
Chris@4: #    else /* MSC or DJGPP */
Chris@4: #      include <malloc.h>
Chris@4: #    endif
Chris@4: #  endif
Chris@4: #endif
Chris@4: 
Chris@4: #ifdef AMIGA
Chris@4: #  define OS_CODE  0x01
Chris@4: #endif
Chris@4: 
Chris@4: #if defined(VAXC) || defined(VMS)
Chris@4: #  define OS_CODE  0x02
Chris@4: #  define F_OPEN(name, mode) \
Chris@4:      fopen((name), (mode), "mbc=60", "ctx=stm", "rfm=fix", "mrs=512")
Chris@4: #endif
Chris@4: 
Chris@4: #if defined(ATARI) || defined(atarist)
Chris@4: #  define OS_CODE  0x05
Chris@4: #endif
Chris@4: 
Chris@4: #ifdef OS2
Chris@4: #  define OS_CODE  0x06
Chris@4: #  if defined(M_I86) && !defined(Z_SOLO)
Chris@4: #    include <malloc.h>
Chris@4: #  endif
Chris@4: #endif
Chris@4: 
Chris@4: #if defined(MACOS) || defined(TARGET_OS_MAC)
Chris@4: #  define OS_CODE  0x07
Chris@4: #  ifndef Z_SOLO
Chris@4: #    if defined(__MWERKS__) && __dest_os != __be_os && __dest_os != __win32_os
Chris@4: #      include <unix.h> /* for fdopen */
Chris@4: #    else
Chris@4: #      ifndef fdopen
Chris@4: #        define fdopen(fd,mode) NULL /* No fdopen() */
Chris@4: #      endif
Chris@4: #    endif
Chris@4: #  endif
Chris@4: #endif
Chris@4: 
Chris@4: #ifdef TOPS20
Chris@4: #  define OS_CODE  0x0a
Chris@4: #endif
Chris@4: 
Chris@4: #ifdef WIN32
Chris@4: #  ifndef __CYGWIN__  /* Cygwin is Unix, not Win32 */
Chris@4: #    define OS_CODE  0x0b
Chris@4: #  endif
Chris@4: #endif
Chris@4: 
Chris@4: #ifdef __50SERIES /* Prime/PRIMOS */
Chris@4: #  define OS_CODE  0x0f
Chris@4: #endif
Chris@4: 
Chris@4: #if defined(_BEOS_) || defined(RISCOS)
Chris@4: #  define fdopen(fd,mode) NULL /* No fdopen() */
Chris@4: #endif
Chris@4: 
Chris@4: #if (defined(_MSC_VER) && (_MSC_VER > 600)) && !defined __INTERIX
Chris@4: #  if defined(_WIN32_WCE)
Chris@4: #    define fdopen(fd,mode) NULL /* No fdopen() */
Chris@4: #    ifndef _PTRDIFF_T_DEFINED
Chris@4:        typedef int ptrdiff_t;
Chris@4: #      define _PTRDIFF_T_DEFINED
Chris@4: #    endif
Chris@4: #  else
Chris@4: #    define fdopen(fd,type)  _fdopen(fd,type)
Chris@4: #  endif
Chris@4: #endif
Chris@4: 
Chris@4: #if defined(__BORLANDC__) && !defined(MSDOS)
Chris@4:   #pragma warn -8004
Chris@4:   #pragma warn -8008
Chris@4:   #pragma warn -8066
Chris@4: #endif
Chris@4: 
Chris@4: /* provide prototypes for these when building zlib without LFS */
Chris@4: #if !defined(_WIN32) && (!defined(_LARGEFILE64_SOURCE) || _LFS64_LARGEFILE-0 == 0)
Chris@4:     ZEXTERN uLong ZEXPORT adler32_combine64 OF((uLong, uLong, z_off_t));
Chris@4:     ZEXTERN uLong ZEXPORT crc32_combine64 OF((uLong, uLong, z_off_t));
Chris@4: #endif
Chris@4: 
Chris@4:         /* common defaults */
Chris@4: 
Chris@4: #ifndef OS_CODE
Chris@4: #  define OS_CODE  0x03  /* assume Unix */
Chris@4: #endif
Chris@4: 
Chris@4: #ifndef F_OPEN
Chris@4: #  define F_OPEN(name, mode) fopen((name), (mode))
Chris@4: #endif
Chris@4: 
Chris@4:          /* functions */
Chris@4: 
Chris@4: #if defined(pyr) || defined(Z_SOLO)
Chris@4: #  define NO_MEMCPY
Chris@4: #endif
Chris@4: #if defined(SMALL_MEDIUM) && !defined(_MSC_VER) && !defined(__SC__)
Chris@4:  /* Use our own functions for small and medium model with MSC <= 5.0.
Chris@4:   * You may have to use the same strategy for Borland C (untested).
Chris@4:   * The __SC__ check is for Symantec.
Chris@4:   */
Chris@4: #  define NO_MEMCPY
Chris@4: #endif
Chris@4: #if defined(STDC) && !defined(HAVE_MEMCPY) && !defined(NO_MEMCPY)
Chris@4: #  define HAVE_MEMCPY
Chris@4: #endif
Chris@4: #ifdef HAVE_MEMCPY
Chris@4: #  ifdef SMALL_MEDIUM /* MSDOS small or medium model */
Chris@4: #    define zmemcpy _fmemcpy
Chris@4: #    define zmemcmp _fmemcmp
Chris@4: #    define zmemzero(dest, len) _fmemset(dest, 0, len)
Chris@4: #  else
Chris@4: #    define zmemcpy memcpy
Chris@4: #    define zmemcmp memcmp
Chris@4: #    define zmemzero(dest, len) memset(dest, 0, len)
Chris@4: #  endif
Chris@4: #else
Chris@4:    void ZLIB_INTERNAL zmemcpy OF((Bytef* dest, const Bytef* source, uInt len));
Chris@4:    int ZLIB_INTERNAL zmemcmp OF((const Bytef* s1, const Bytef* s2, uInt len));
Chris@4:    void ZLIB_INTERNAL zmemzero OF((Bytef* dest, uInt len));
Chris@4: #endif
Chris@4: 
Chris@4: /* Diagnostic functions */
Chris@4: #ifdef DEBUG
Chris@4: #  include <stdio.h>
Chris@4:    extern int ZLIB_INTERNAL z_verbose;
Chris@4:    extern void ZLIB_INTERNAL z_error OF((char *m));
Chris@4: #  define Assert(cond,msg) {if(!(cond)) z_error(msg);}
Chris@4: #  define Trace(x) {if (z_verbose>=0) fprintf x ;}
Chris@4: #  define Tracev(x) {if (z_verbose>0) fprintf x ;}
Chris@4: #  define Tracevv(x) {if (z_verbose>1) fprintf x ;}
Chris@4: #  define Tracec(c,x) {if (z_verbose>0 && (c)) fprintf x ;}
Chris@4: #  define Tracecv(c,x) {if (z_verbose>1 && (c)) fprintf x ;}
Chris@4: #else
Chris@4: #  define Assert(cond,msg)
Chris@4: #  define Trace(x)
Chris@4: #  define Tracev(x)
Chris@4: #  define Tracevv(x)
Chris@4: #  define Tracec(c,x)
Chris@4: #  define Tracecv(c,x)
Chris@4: #endif
Chris@4: 
Chris@4: #ifndef Z_SOLO
Chris@4:    voidpf ZLIB_INTERNAL zcalloc OF((voidpf opaque, unsigned items,
Chris@4:                                     unsigned size));
Chris@4:    void ZLIB_INTERNAL zcfree  OF((voidpf opaque, voidpf ptr));
Chris@4: #endif
Chris@4: 
Chris@4: #define ZALLOC(strm, items, size) \
Chris@4:            (*((strm)->zalloc))((strm)->opaque, (items), (size))
Chris@4: #define ZFREE(strm, addr)  (*((strm)->zfree))((strm)->opaque, (voidpf)(addr))
Chris@4: #define TRY_FREE(s, p) {if (p) ZFREE(s, p);}
Chris@4: 
Chris@4: /* Reverse the bytes in a 32-bit value */
Chris@4: #define ZSWAP32(q) ((((q) >> 24) & 0xff) + (((q) >> 8) & 0xff00) + \
Chris@4:                     (((q) & 0xff00) << 8) + (((q) & 0xff) << 24))
Chris@4: 
Chris@4: #endif /* ZUTIL_H */