/* zutil.h -- internal interface and configuration of the compression library
- * Copyright (C) 1995 Jean-loup Gailly.
+ * Copyright (C) 1995-2022 Jean-loup Gailly, Mark Adler
* For conditions of distribution and use, see copyright notice in zlib.h
*/
subject to change. Applications should only use zlib.h.
*/
-/* $Id: zutil.h,v 1.9 1995/05/03 17:27:12 jloup Exp $ */
+/* @(#) $Id$ */
-#ifndef _Z_UTIL_H
-#define _Z_UTIL_H
+#ifndef ZUTIL_H
+#define ZUTIL_H
-#include "zlib.h"
-
-#if defined(MSDOS) || defined(VMS) || defined(CRAY)
-# include <stddef.h>
-# include <errno.h>
+#ifdef HAVE_HIDDEN
+# define ZLIB_INTERNAL __attribute__((visibility ("hidden")))
#else
- extern int errno;
+# define ZLIB_INTERNAL
#endif
-#ifdef STDC
+
+#include "zlib.h"
+
+#if defined(STDC) && !defined(Z_SOLO)
+# if !(defined(_WIN32_WCE) && defined(_MSC_VER))
+# include <stddef.h>
+# endif
# include <string.h>
# include <stdlib.h>
#endif
#ifndef local
# define local static
#endif
-/* compile with -Dlocal if your debugger can't find static symbols */
+/* since "static" is used to mean two completely different things in C, we
+ define "local" for the non-static meaning of "static", for readability
+ (compile with -Dlocal if your debugger can't find static symbols) */
typedef unsigned char uch;
typedef uch FAR uchf;
typedef ush FAR ushf;
typedef unsigned long ulg;
-extern char *z_errmsg[]; /* indexed by 1-zlib_error */
+#if !defined(Z_U8) && !defined(Z_SOLO) && defined(STDC)
+# include <limits.h>
+# if (ULONG_MAX == 0xffffffffffffffff)
+# define Z_U8 unsigned long
+# elif (ULLONG_MAX == 0xffffffffffffffff)
+# define Z_U8 unsigned long long
+# elif (UINT_MAX == 0xffffffffffffffff)
+# define Z_U8 unsigned
+# endif
+#endif
+
+extern z_const char * const z_errmsg[10]; /* indexed by 2-zlib_error */
+/* (size given to avoid silly warnings with Visual C++) */
+
+#define ERR_MSG(err) z_errmsg[Z_NEED_DICT-(err)]
-#define ERR_RETURN(strm,err) return (strm->msg = z_errmsg[1-(err)], (err))
+#define ERR_RETURN(strm,err) \
+ return (strm->msg = ERR_MSG(err), (err))
/* To be used only when the state is known to be valid */
/* common constants */
#define MAX_MATCH 258
/* The minimum and maximum match lengths */
+#define PRESET_DICT 0x20 /* preset dictionary flag in zlib header */
+
/* target dependencies */
-#ifdef MSDOS
+#if defined(MSDOS) || (defined(WINDOWS) && !defined(WIN32))
# define OS_CODE 0x00
-# ifdef __TURBOC__
-# include <alloc.h>
-# else /* MSC or DJGPP */
-# include <malloc.h>
+# ifndef Z_SOLO
+# if defined(__TURBOC__) || defined(__BORLANDC__)
+# if (__STDC__ == 1) && (defined(__LARGE__) || defined(__COMPACT__))
+ /* Allow compilation with ANSI keywords only enabled */
+ void _Cdecl farfree( void *block );
+ void *_Cdecl farmalloc( unsigned long nbytes );
+# else
+# include <alloc.h>
+# endif
+# else /* MSC or DJGPP */
+# include <malloc.h>
+# endif
# endif
#endif
-#ifdef OS2
-# define OS_CODE 0x06
-#endif
-
-#ifdef WIN32 /* Window 95 & Windows NT */
-# define OS_CODE 0x0b
+#ifdef AMIGA
+# define OS_CODE 1
#endif
#if defined(VAXC) || defined(VMS)
-# define OS_CODE 0x02
-# define FOPEN(name, mode) \
+# define OS_CODE 2
+# define F_OPEN(name, mode) \
fopen((name), (mode), "mbc=60", "ctx=stm", "rfm=fix", "mrs=512")
#endif
-#ifdef AMIGA
-# define OS_CODE 0x01
+#ifdef __370__
+# if __TARGET_LIB__ < 0x20000000
+# define OS_CODE 4
+# elif __TARGET_LIB__ < 0x40000000
+# define OS_CODE 11
+# else
+# define OS_CODE 8
+# endif
#endif
#if defined(ATARI) || defined(atarist)
-# define OS_CODE 0x05
+# define OS_CODE 5
#endif
-#ifdef MACOS
-# define OS_CODE 0x07
+#ifdef OS2
+# define OS_CODE 6
+# if defined(M_I86) && !defined(Z_SOLO)
+# include <malloc.h>
+# endif
#endif
-#ifdef __50SERIES /* Prime/PRIMOS */
-# define OS_CODE 0x0F
+#if defined(MACOS) || defined(TARGET_OS_MAC)
+# define OS_CODE 7
+# ifndef Z_SOLO
+# if defined(__MWERKS__) && __dest_os != __be_os && __dest_os != __win32_os
+# include <unix.h> /* for fdopen */
+# else
+# ifndef fdopen
+# define fdopen(fd,mode) NULL /* No fdopen() */
+# endif
+# endif
+# endif
#endif
-#ifdef TOPS20
-# define OS_CODE 0x0a
+#ifdef __acorn
+# define OS_CODE 13
#endif
- /* Common defaults */
+#if defined(WIN32) && !defined(__CYGWIN__)
+# define OS_CODE 10
+#endif
-#ifndef OS_CODE
-# define OS_CODE 0x03 /* assume Unix */
+#ifdef _BEOS_
+# define OS_CODE 16
#endif
-#ifndef FOPEN
-# define FOPEN(name, mode) fopen((name), (mode))
+#ifdef __TOS_OS400__
+# define OS_CODE 18
#endif
- /* functions */
+#ifdef __APPLE__
+# define OS_CODE 19
+#endif
-#ifdef HAVE_STRERROR
- extern char *strerror OF((int));
-# define zstrerror(errnum) strerror(errnum)
-#else
-# define zstrerror(errnum) ""
+#if defined(_BEOS_) || defined(RISCOS)
+# define fdopen(fd,mode) NULL /* No fdopen() */
+#endif
+
+#if (defined(_MSC_VER) && (_MSC_VER > 600)) && !defined __INTERIX
+# if defined(_WIN32_WCE)
+# define fdopen(fd,mode) NULL /* No fdopen() */
+# else
+# define fdopen(fd,type) _fdopen(fd,type)
+# endif
#endif
-#if defined(pyr)
+#if defined(__BORLANDC__) && !defined(MSDOS)
+ #pragma warn -8004
+ #pragma warn -8008
+ #pragma warn -8066
+#endif
+
+/* provide prototypes for these when building zlib without LFS */
+#if !defined(_WIN32) && \
+ (!defined(_LARGEFILE64_SOURCE) || _LFS64_LARGEFILE-0 == 0)
+ ZEXTERN uLong ZEXPORT adler32_combine64 OF((uLong, uLong, z_off_t));
+ ZEXTERN uLong ZEXPORT crc32_combine64 OF((uLong, uLong, z_off_t));
+#endif
+
+ /* common defaults */
+
+#ifndef OS_CODE
+# define OS_CODE 3 /* assume Unix */
+#endif
+
+#ifndef F_OPEN
+# define F_OPEN(name, mode) fopen((name), (mode))
+#endif
+
+ /* functions */
+
+#if defined(pyr) || defined(Z_SOLO)
# define NO_MEMCPY
#endif
-#if (defined(M_I86SM) || defined(M_I86MM)) && !defined(_MSC_VER)
+#if defined(SMALL_MEDIUM) && !defined(_MSC_VER) && !defined(__SC__)
/* Use our own functions for small and medium model with MSC <= 5.0.
* You may have to use the same strategy for Borland C (untested).
+ * The __SC__ check is for Symantec.
*/
# define NO_MEMCPY
#endif
# define HAVE_MEMCPY
#endif
#ifdef HAVE_MEMCPY
-# if defined(M_I86SM) || defined(M_I86MM) /* MSC small or medium model */
+# ifdef SMALL_MEDIUM /* MSDOS small or medium model */
# define zmemcpy _fmemcpy
+# define zmemcmp _fmemcmp
# define zmemzero(dest, len) _fmemset(dest, 0, len)
# else
# define zmemcpy memcpy
+# define zmemcmp memcmp
# define zmemzero(dest, len) memset(dest, 0, len)
# endif
#else
- extern void zmemcpy OF((Bytef* dest, Bytef* source, uInt len));
- extern void zmemzero OF((Bytef* dest, uInt len));
+ void ZLIB_INTERNAL zmemcpy OF((Bytef* dest, const Bytef* source, uInt len));
+ int ZLIB_INTERNAL zmemcmp OF((const Bytef* s1, const Bytef* s2, uInt len));
+ void ZLIB_INTERNAL zmemzero OF((Bytef* dest, uInt len));
#endif
/* Diagnostic functions */
-#ifdef DEBUG
+#ifdef ZLIB_DEBUG
# include <stdio.h>
-# ifndef verbose
-# define verbose 0
-# endif
+ extern int ZLIB_INTERNAL z_verbose;
+ extern void ZLIB_INTERNAL z_error OF((char *m));
# define Assert(cond,msg) {if(!(cond)) z_error(msg);}
-# define Trace(x) fprintf x
-# define Tracev(x) {if (verbose) fprintf x ;}
-# define Tracevv(x) {if (verbose>1) fprintf x ;}
-# define Tracec(c,x) {if (verbose && (c)) fprintf x ;}
-# define Tracecv(c,x) {if (verbose>1 && (c)) fprintf x ;}
+# define Trace(x) {if (z_verbose>=0) fprintf x ;}
+# define Tracev(x) {if (z_verbose>0) fprintf x ;}
+# define Tracevv(x) {if (z_verbose>1) fprintf x ;}
+# define Tracec(c,x) {if (z_verbose>0 && (c)) fprintf x ;}
+# define Tracecv(c,x) {if (z_verbose>1 && (c)) fprintf x ;}
#else
# define Assert(cond,msg)
# define Trace(x)
# define Tracecv(c,x)
#endif
-
-typedef uLong (*check_func) OF((uLong check, Bytef *buf, uInt len));
-
-extern void z_error OF((char *m));
-
-voidpf zcalloc OF((voidpf opaque, unsigned items, unsigned size));
-void zcfree OF((voidpf opaque, voidpf ptr));
+#ifndef Z_SOLO
+ voidpf ZLIB_INTERNAL zcalloc OF((voidpf opaque, unsigned items,
+ unsigned size));
+ void ZLIB_INTERNAL zcfree OF((voidpf opaque, voidpf ptr));
+#endif
#define ZALLOC(strm, items, size) \
(*((strm)->zalloc))((strm)->opaque, (items), (size))
#define ZFREE(strm, addr) (*((strm)->zfree))((strm)->opaque, (voidpf)(addr))
#define TRY_FREE(s, p) {if (p) ZFREE(s, p);}
-#endif /* _Z_UTIL_H */
+/* Reverse the bytes in a 32-bit value */
+#define ZSWAP32(q) ((((q) >> 24) & 0xff) + (((q) >> 8) & 0xff00) + \
+ (((q) & 0xff00) << 8) + (((q) & 0xff) << 24))
+
+#endif /* ZUTIL_H */
projects / zlib.git / blobdiff