| /* zutil.h -- internal interface and configuration of the compression library |
| * Copyright (C) 1995-1996 Jean-loup Gailly. |
| * 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. |
| */ |
| |
| /* $Id: zutil.h,v 1.14 1996/05/22 11:52:40 me Exp $ */ |
| |
| #ifndef _Z_UTIL_H |
| #define _Z_UTIL_H |
| |
| #include "zlib.h" |
| |
| #if defined(MSDOS) || defined(VMS) || defined(CRAY) || defined(WIN32) |
| # include <stddef.h> |
| # include <errno.h> |
| #else |
| extern int errno; |
| #endif |
| #ifdef STDC |
| # include <string.h> |
| # include <stdlib.h> |
| #endif |
| |
| #ifndef local |
| # define local static |
| #endif |
| /* compile with -Dlocal if your debugger can't find static symbols */ |
| |
| typedef unsigned char uch; |
| typedef uch FAR uchf; |
| typedef unsigned short ush; |
| typedef ush FAR ushf; |
| typedef unsigned long ulg; |
| |
| extern const char *z_errmsg[10]; /* indexed by 2-zlib_error */ |
| /* (size given to avoid silly warnings with Visual C++) */ |
| |
| #define ERR_MSG(err) (char*)z_errmsg[Z_NEED_DICT-(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 */ |
| |
| #ifndef DEF_WBITS |
| # define DEF_WBITS MAX_WBITS |
| #endif |
| /* default windowBits for decompression. MAX_WBITS is for compression only */ |
| |
| #if MAX_MEM_LEVEL >= 8 |
| # define DEF_MEM_LEVEL 8 |
| #else |
| # define DEF_MEM_LEVEL MAX_MEM_LEVEL |
| #endif |
| /* default memLevel */ |
| |
| #define STORED_BLOCK 0 |
| #define STATIC_TREES 1 |
| #define DYN_TREES 2 |
| /* The three kinds of block type */ |
| |
| #define MIN_MATCH 3 |
| #define MAX_MATCH 258 |
| /* The minimum and maximum match lengths */ |
| |
| #define PRESET_DICT 0x20 /* preset dictionary flag in zlib header */ |
| |
| /* target dependencies */ |
| |
| #ifdef MSDOS |
| # define OS_CODE 0x00 |
| # ifdef __TURBOC__ |
| # include <alloc.h> |
| # else /* MSC or DJGPP */ |
| # include <malloc.h> |
| # endif |
| #endif |
| |
| #ifdef OS2 |
| # define OS_CODE 0x06 |
| #endif |
| |
| #ifdef WIN32 /* Window 95 & Windows NT */ |
| # define OS_CODE 0x0b |
| #endif |
| |
| #if defined(VAXC) || defined(VMS) |
| # define OS_CODE 0x02 |
| # define FOPEN(name, mode) \ |
| fopen((name), (mode), "mbc=60", "ctx=stm", "rfm=fix", "mrs=512") |
| #endif |
| |
| #ifdef AMIGA |
| # define OS_CODE 0x01 |
| #endif |
| |
| #if defined(ATARI) || defined(atarist) |
| # define OS_CODE 0x05 |
| #endif |
| |
| #ifdef MACOS |
| # define OS_CODE 0x07 |
| #endif |
| |
| #ifdef __50SERIES /* Prime/PRIMOS */ |
| # define OS_CODE 0x0F |
| #endif |
| |
| #ifdef TOPS20 |
| # define OS_CODE 0x0a |
| #endif |
| |
| #ifdef _BEOS_ |
| # define fdopen(fd,mode) NULL /* No fdopen() */ |
| #endif |
| |
| /* Common defaults */ |
| |
| #ifndef OS_CODE |
| # define OS_CODE 0x03 /* assume Unix */ |
| #endif |
| |
| #ifndef FOPEN |
| # define FOPEN(name, mode) fopen((name), (mode)) |
| #endif |
| |
| /* functions */ |
| |
| #ifdef HAVE_STRERROR |
| extern char *strerror OF((int)); |
| # define zstrerror(errnum) strerror(errnum) |
| #else |
| # define zstrerror(errnum) "" |
| #endif |
| |
| #if defined(pyr) |
| # define NO_MEMCPY |
| #endif |
| #if (defined(M_I86SM) || defined(M_I86MM)) && !defined(_MSC_VER) |
| /* 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). |
| */ |
| # define NO_MEMCPY |
| #endif |
| #if defined(STDC) && !defined(HAVE_MEMCPY) && !defined(NO_MEMCPY) |
| # define HAVE_MEMCPY |
| #endif |
| #ifdef HAVE_MEMCPY |
| # 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)); |
| #endif |
| |
| /* Diagnostic functions */ |
| #ifdef DEBUG |
| # include <stdio.h> |
| # ifndef verbose |
| # define verbose 0 |
| # endif |
| # 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 ;} |
| #else |
| # define Assert(cond,msg) |
| # define Trace(x) |
| # define Tracev(x) |
| # define Tracevv(x) |
| # define Tracec(c,x) |
| # define Tracecv(c,x) |
| #endif |
| |
| |
| typedef uLong (*check_func) OF((uLong check, const 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)); |
| |
| #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 */ |