Ruby: ext/zlib/zlib-1.2.13/zutil.h Source File

Ruby 3.0.5p211 (2022-11-24 revision ba5cf0f7c52d4d35cc6a173c89eda98ceffa2dcf)

zutil.h
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1/* zutil.h -- internal interface and configuration of the compression library
2 * Copyright (C) 1995-2022 Jean-loup Gailly, Mark Adler
3 * For conditions of distribution and use, see copyright notice in zlib.h
4 */
5
6/* WARNING: this file should *not* be used by applications. It is
7 part of the implementation of the compression library and is
8 subject to change. Applications should only use zlib.h.
9 */
10
11/* @(#) $Id$ */
12
13#ifndef ZUTIL_H
14#define ZUTIL_H
15
16#ifdef HAVE_HIDDEN
17# define ZLIB_INTERNAL __attribute__((visibility ("hidden")))
18#else
19# define ZLIB_INTERNAL
20#endif
21
22#include "zlib.h"
23
24#if defined(STDC) && !defined(Z_SOLO)
25# if !(defined(_WIN32_WCE) && defined(_MSC_VER))
26# include <stddef.h>
27# endif
28# include <string.h>
29# include <stdlib.h>
30#endif
31
32#ifndef local
33# define local static
34#endif
35/* since "static" is used to mean two completely different things in C, we
36 define "local" for the non-static meaning of "static", for readability
37 (compile with -Dlocal if your debugger can't find static symbols) */
38
39 typedef unsigned char uch;
40 typedef uch FAR uchf;
41 typedef unsigned short ush;
42 typedef ush FAR ushf;
43 typedef unsigned long ulg;
44
45#if !defined(Z_U8) && !defined(Z_SOLO) && defined(STDC)
46# include <limits.h>
47# if (ULONG_MAX == 0xffffffffffffffff)
48# define Z_U8 unsigned long
49# elif (ULLONG_MAX == 0xffffffffffffffff)
50# define Z_U8 unsigned long long
51# elif (UINT_MAX == 0xffffffffffffffff)
52# define Z_U8 unsigned
53# endif
54#endif
55
56extern z_const char * const z_errmsg[10]; /* indexed by 2-zlib_error */
57/* (size given to avoid silly warnings with Visual C++) */
58
59#define ERR_MSG(err) z_errmsg[Z_NEED_DICT-(err)]
60
61#define ERR_RETURN(strm,err) \
62 return (strm->msg = ERR_MSG(err), (err))
63/* To be used only when the state is known to be valid */
64
65 /* common constants */
66
67#ifndef DEF_WBITS
68# define DEF_WBITS MAX_WBITS
69#endif
70/* default windowBits for decompression. MAX_WBITS is for compression only */
71
72#if MAX_MEM_LEVEL >= 8
73# define DEF_MEM_LEVEL 8
74#else
75# define DEF_MEM_LEVEL MAX_MEM_LEVEL
76#endif
77/* default memLevel */
78
79#define STORED_BLOCK 0
80#define STATIC_TREES 1
81#define DYN_TREES 2
82/* The three kinds of block type */
83
84#define MIN_MATCH 3
85#define MAX_MATCH 258
86/* The minimum and maximum match lengths */
87
88#define PRESET_DICT 0x20 /* preset dictionary flag in zlib header */
89
90 /* target dependencies */
91
92#if defined(MSDOS) || (defined(WINDOWS) && !defined(WIN32))
93# define OS_CODE 0x00
94# ifndef Z_SOLO
95# if defined(__TURBOC__) || defined(__BORLANDC__)
96# if (__STDC__ == 1) && (defined(__LARGE__) || defined(__COMPACT__))
97 /* Allow compilation with ANSI keywords only enabled */
98 void _Cdecl farfree( void *block );
99 void *_Cdecl farmalloc( unsigned long nbytes );
100# else
101# include <alloc.h>
102# endif
103# else /* MSC or DJGPP */
104# include <malloc.h>
105# endif
106# endif
107#endif
108
109#ifdef AMIGA
110# define OS_CODE 1
111#endif
112
113#if defined(VAXC) || defined(VMS)
114# define OS_CODE 2
115# define F_OPEN(name, mode) \
116 fopen((name), (mode), "mbc=60", "ctx=stm", "rfm=fix", "mrs=512")
117#endif
118
119#ifdef __370__
120# if __TARGET_LIB__ < 0x20000000
121# define OS_CODE 4
122# elif __TARGET_LIB__ < 0x40000000
123# define OS_CODE 11
124# else
125# define OS_CODE 8
126# endif
127#endif
128
129#if defined(ATARI) || defined(atarist)
130# define OS_CODE 5
131#endif
132
133#ifdef OS2
134# define OS_CODE 6
135# if defined(M_I86) && !defined(Z_SOLO)
136# include <malloc.h>
137# endif
138#endif
139
140#if defined(MACOS) || defined(TARGET_OS_MAC)
141# define OS_CODE 7
142# ifndef Z_SOLO
143# if defined(__MWERKS__) && __dest_os != __be_os && __dest_os != __win32_os
144# include <unix.h> /* for fdopen */
145# else
146# ifndef fdopen
147# define fdopen(fd,mode) NULL /* No fdopen() */
148# endif
149# endif
150# endif
151#endif
152
153#ifdef __acorn
154# define OS_CODE 13
155#endif
156
157#if defined(WIN32) && !defined(__CYGWIN__)
158# define OS_CODE 10
159#endif
160
161#ifdef _BEOS_
162# define OS_CODE 16
163#endif
164
165#ifdef __TOS_OS400__
166# define OS_CODE 18
167#endif
168
169#ifdef __APPLE__
170# define OS_CODE 19
171#endif
172
173#if defined(_BEOS_) || defined(RISCOS)
174# define fdopen(fd,mode) NULL /* No fdopen() */
175#endif
176
177#if (defined(_MSC_VER) && (_MSC_VER > 600)) && !defined __INTERIX
178# if defined(_WIN32_WCE)
179# define fdopen(fd,mode) NULL /* No fdopen() */
180# else
181# define fdopen(fd,type) _fdopen(fd,type)
182# endif
183#endif
184
185#if defined(__BORLANDC__) && !defined(MSDOS)
186 #pragma warn -8004
187 #pragma warn -8008
188 #pragma warn -8066
189#endif
190
191/* provide prototypes for these when building zlib without LFS */
192#if !defined(_WIN32) && \
193 (!defined(_LARGEFILE64_SOURCE) || _LFS64_LARGEFILE-0 == 0)
194 ZEXTERN uLong ZEXPORT adler32_combine64 OF((uLong, uLong, z_off_t));
195 ZEXTERN uLong ZEXPORT crc32_combine64 OF((uLong, uLong, z_off_t));
196 ZEXTERN uLong ZEXPORT crc32_combine_gen64 OF((z_off_t));
197#endif
198
199 /* common defaults */
200
201#ifndef OS_CODE
202# define OS_CODE 3 /* assume Unix */
203#endif
204
205#ifndef F_OPEN
206# define F_OPEN(name, mode) fopen((name), (mode))
207#endif
208
209 /* functions */
210
211#if defined(pyr) || defined(Z_SOLO)
212# define NO_MEMCPY
213#endif
214#if defined(SMALL_MEDIUM) && !defined(_MSC_VER) && !defined(__SC__)
215 /* Use our own functions for small and medium model with MSC <= 5.0.
216 * You may have to use the same strategy for Borland C (untested).
217 * The __SC__ check is for Symantec.
218 */
219# define NO_MEMCPY
220#endif
221#if defined(STDC) && !defined(HAVE_MEMCPY) && !defined(NO_MEMCPY)
222# define HAVE_MEMCPY
223#endif
224#ifdef HAVE_MEMCPY
225# ifdef SMALL_MEDIUM /* MSDOS small or medium model */
226# define zmemcpy _fmemcpy
227# define zmemcmp _fmemcmp
228# define zmemzero(dest, len) _fmemset(dest, 0, len)
229# else
230# define zmemcpy memcpy
231# define zmemcmp memcmp
232# define zmemzero(dest, len) memset(dest, 0, len)
233# endif
234#else
235 void ZLIB_INTERNAL zmemcpy OF((Bytef* dest, const Bytef* source, uInt len));
236 int ZLIB_INTERNAL zmemcmp OF((const Bytef* s1, const Bytef* s2, uInt len));
237 void ZLIB_INTERNAL zmemzero OF((Bytef* dest, uInt len));
238#endif
239
240/* Diagnostic functions */
241#ifdef ZLIB_DEBUG
242# include <stdio.h>
243 extern int ZLIB_INTERNAL z_verbose;
244 extern void ZLIB_INTERNAL z_error OF((char *m));
245# define Assert(cond,msg) {if(!(cond)) z_error(msg);}
246# define Trace(x) {if (z_verbose>=0) fprintf x ;}
247# define Tracev(x) {if (z_verbose>0) fprintf x ;}
248# define Tracevv(x) {if (z_verbose>1) fprintf x ;}
249# define Tracec(c,x) {if (z_verbose>0 && (c)) fprintf x ;}
250# define Tracecv(c,x) {if (z_verbose>1 && (c)) fprintf x ;}
251#else
252# define Assert(cond,msg)
253# define Trace(x)
254# define Tracev(x)
255# define Tracevv(x)
256# define Tracec(c,x)
257# define Tracecv(c,x)
258#endif
259
260#ifndef Z_SOLO
261 voidpf ZLIB_INTERNAL zcalloc OF((voidpf opaque, unsigned items,
262 unsigned size));
263 void ZLIB_INTERNAL zcfree OF((voidpf opaque, voidpf ptr));
264#endif
265
266#define ZALLOC(strm, items, size) \
267 (*((strm)->zalloc))((strm)->opaque, (items), (size))
268#define ZFREE(strm, addr) (*((strm)->zfree))((strm)->opaque, (voidpf)(addr))
269#define TRY_FREE(s, p) {if (p) ZFREE(s, p);}
270
271/* Reverse the bytes in a 32-bit value */
272#define ZSWAP32(q) ((((q) >> 24) & 0xff) + (((q) >> 8) & 0xff00) + \
273 (((q) & 0xff00) << 8) + (((q) & 0xff) << 24))
274
275#endif /* ZUTIL_H */
adler32_combine64
uLong ZEXPORT adler32_combine64(uLong adler1, uLong adler2, z_off64_t len2)
Definition: adler32.c:180
crc32_combine64
uLong ZEXPORT crc32_combine64(uLong crc1, uLong crc2, z_off64_t len2)
Definition: crc32.c:1081
crc32_combine_gen64
uLong ZEXPORT crc32_combine_gen64(z_off64_t len2)
Definition: crc32.c:1102
ptr
struct RIMemo * ptr
Definition: debug.c:88
len
uint8_t len
Definition: escape.c:17
size
voidpf void uLong size
Definition: ioapi.h:138
limits.h
Historical shim for <limits.h>.
uLong
unsigned long uLong
Definition: zconf.h:400
ZEXPORT
#define ZEXPORT
Definition: zconf.h:386
ZEXTERN
#define ZEXTERN
Definition: zconf.h:383
voidpf
void FAR * voidpf
Definition: zconf.h:415
uInt
unsigned int uInt
Definition: zconf.h:399
z_off_t
#define z_off_t
Definition: zconf.h:517
z_const
#define z_const
Definition: zconf.h:240
OF
#define OF(args)
Definition: zconf.h:293
Bytef
Byte FAR Bytef
Definition: zconf.h:406
FAR
#define FAR
Definition: zconf.h:393
zlib.h
zcfree
void ZLIB_INTERNAL zcfree(voidpf opaque, voidpf ptr)
Definition: zutil.c:317
zcalloc
voidpf ZLIB_INTERNAL zcalloc(voidpf opaque, unsigned items, unsigned size)
Definition: zutil.c:307
zmemcmp
#define zmemcmp
Definition: zutil.h:231
zmemzero
#define zmemzero(dest, len)
Definition: zutil.h:232
zmemcpy
#define zmemcpy
Definition: zutil.h:230
ush
unsigned short ush
Definition: zutil.h:41
ZLIB_INTERNAL
#define ZLIB_INTERNAL
Definition: zutil.h:19
z_errmsg
z_const char *const z_errmsg[10]
Definition: zutil.c:13
uchf
uch FAR uchf
Definition: zutil.h:40
ushf
ush FAR ushf
Definition: zutil.h:42
ulg
unsigned long ulg
Definition: zutil.h:43
uch
unsigned char uch
Definition: zutil.h:39