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/* zconf-ng.h -- configuration of the zlib-ng compression library

* Copyright (C) 1995-2024 Jean-loup Gailly, Mark Adler

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

*/

#ifndef ZCONFNG_H

#define ZCONFNG_H

#if !defined(_WIN32) && defined(__WIN32__)

# define _WIN32

#endif

/* Clang macro for detecting declspec support

* https://clang.llvm.org/docs/LanguageExtensions.html#has-declspec-attribute

*/

#ifndef __has_declspec_attribute

# define __has_declspec_attribute(x) 0

#endif

/* Always define z_const as const */

#define z_const const

/* Maximum value for memLevel in deflateInit2 */

#ifndef MAX_MEM_LEVEL

# define MAX_MEM_LEVEL 9

#endif

/* Maximum value for windowBits in deflateInit2 and inflateInit2.

* WARNING: reducing MAX_WBITS makes minigzip unable to extract .gz files

* created by gzip. (Files created by minigzip can still be extracted by

* gzip.)

*/

#ifndef MIN_WBITS

# define MIN_WBITS 8 /* 256 LZ77 window */

#endif

#ifndef MAX_WBITS

# define MAX_WBITS 15 /* 32K LZ77 window */

#endif

/* The memory requirements for deflate are (in bytes):

(1 << (windowBits+2)) + (1 << (memLevel+9))

that is: 128K for windowBits=15 + 128K for memLevel = 8 (default values)

plus a few kilobytes for small objects. For example, if you want to reduce

the default memory requirements from 256K to 128K, compile with

make CFLAGS="-O -DMAX_WBITS=14 -DMAX_MEM_LEVEL=7"

Of course this will generally degrade compression (there's no free lunch).

The memory requirements for inflate are (in bytes) 1 << windowBits

that is, 32K for windowBits=15 (default value) plus about 7 kilobytes

for small objects.

*/

/* Type declarations */

#ifdef ZLIB_INTERNAL

# define Z_INTERNAL ZLIB_INTERNAL

#endif

/* If building or using zlib as a DLL, define ZLIB_DLL.

* This is not mandatory, but it offers a little performance increase.

*/

#if defined(ZLIB_DLL) && (defined(_WIN32) || (__has_declspec_attribute(dllexport) && __has_declspec_attribute(dllimport)))

# ifdef Z_INTERNAL

# define Z_EXTERN extern __declspec(dllexport)

# else

# define Z_EXTERN extern __declspec(dllimport)

# endif

#endif

/* If building or using zlib with the WINAPI/WINAPIV calling convention,

* define ZLIB_WINAPI.

* Caution: the standard ZLIB1.DLL is NOT compiled using ZLIB_WINAPI.

*/

#if defined(ZLIB_WINAPI) && defined(_WIN32)

# include <windows.h>

/* No need for _export, use ZLIB.DEF instead. */

/* For complete Windows compatibility, use WINAPI, not __stdcall. */

# define Z_EXPORT WINAPI

# define Z_EXPORTVA WINAPIV

#endif

#ifndef Z_EXTERN

# define Z_EXTERN extern

#endif

#ifndef Z_EXPORT

# define Z_EXPORT

#endif

#ifndef Z_EXPORTVA

# define Z_EXPORTVA

#endif

/* Conditional exports */

#define ZNG_CONDEXPORT Z_EXPORT

/* Fallback for something that includes us. */

typedef unsigned char Byte;

typedef Byte Bytef;

typedef unsigned int uInt; /* 16 bits or more */

typedef unsigned long uLong; /* 32 bits or more */

typedef char charf;

typedef int intf;

typedef uInt uIntf;

typedef uLong uLongf;

typedef void const *voidpc;

typedef void *voidpf;

typedef void *voidp;

#if 0 /* was set to #if 0 by configure/cmake/etc */

# define Z_HAVE_UNISTD_H

#endif

#ifdef NEED_PTRDIFF_T /* may be set to #if 1 by configure/cmake/etc */

typedef PTRDIFF_TYPE ptrdiff_t;

#endif

#include <sys/types.h> /* for off_t */

#include <stddef.h> /* for wchar_t and NULL */

/* a little trick to accommodate both "#define _LARGEFILE64_SOURCE" and

* "#define _LARGEFILE64_SOURCE 1" as requesting 64-bit operations, (even

* though the former does not conform to the LFS document), but considering

* both "#undef _LARGEFILE64_SOURCE" and "#define _LARGEFILE64_SOURCE 0" as

* equivalently requesting no 64-bit operations

*/

#if defined(_LARGEFILE64_SOURCE) && -_LARGEFILE64_SOURCE - -1 == 1

# undef _LARGEFILE64_SOURCE

#endif

#if defined(Z_HAVE_UNISTD_H) || defined(_LARGEFILE64_SOURCE)

# include <unistd.h> /* for SEEK_*, off_t, and _LFS64_LARGEFILE */

# ifndef z_off_t

# define z_off_t off_t

# endif

#endif

#if defined(_LFS64_LARGEFILE) && _LFS64_LARGEFILE-0

# define Z_LFS64

#endif

#if defined(_LARGEFILE64_SOURCE) && defined(Z_LFS64)

# define Z_LARGE64

#endif

#if defined(_FILE_OFFSET_BITS) && _FILE_OFFSET_BITS-0 == 64 && defined(Z_LFS64)

# define Z_WANT64

#endif

#if !defined(SEEK_SET) && defined(WITH_GZFILEOP)

# define SEEK_SET 0 /* Seek from beginning of file. */

# define SEEK_CUR 1 /* Seek from current position. */

# define SEEK_END 2 /* Set file pointer to EOF plus "offset" */

#endif

#ifndef z_off_t

# define z_off_t long

#endif

#if !defined(_WIN32) && defined(Z_LARGE64)

# define z_off64_t off64_t

#else

# if defined(__MSYS__)

# define z_off64_t _off64_t

# elif defined(_WIN32) && !defined(__GNUC__)

# define z_off64_t __int64

# else

# define z_off64_t z_off_t

# endif

#endif

#endif /* ZCONFNG_H */