1.1 --- /dev/null Thu Jan 01 00:00:00 1970 +0000
1.2 +++ b/modules/zlib/src/gzguts.h Wed Dec 31 06:09:35 2014 +0100
1.3 @@ -0,0 +1,209 @@
1.4 +/* gzguts.h -- zlib internal header definitions for gz* operations
1.5 + * Copyright (C) 2004, 2005, 2010, 2011, 2012, 2013 Mark Adler
1.6 + * For conditions of distribution and use, see copyright notice in zlib.h
1.7 + */
1.8 +
1.9 +#ifdef _LARGEFILE64_SOURCE
1.10 +# ifndef _LARGEFILE_SOURCE
1.11 +# define _LARGEFILE_SOURCE 1
1.12 +# endif
1.13 +# ifdef _FILE_OFFSET_BITS
1.14 +# undef _FILE_OFFSET_BITS
1.15 +# endif
1.16 +#endif
1.17 +
1.18 +#ifdef HAVE_HIDDEN
1.19 +# define ZLIB_INTERNAL __attribute__((visibility ("hidden")))
1.20 +#else
1.21 +# define ZLIB_INTERNAL
1.22 +#endif
1.23 +
1.24 +#include <stdio.h>
1.25 +#include "zlib.h"
1.26 +#ifdef STDC
1.27 +# include <string.h>
1.28 +# include <stdlib.h>
1.29 +# include <limits.h>
1.30 +#endif
1.31 +#include <fcntl.h>
1.32 +
1.33 +#ifdef _WIN32
1.34 +# include <stddef.h>
1.35 +#endif
1.36 +
1.37 +#if defined(__TURBOC__) || defined(_MSC_VER) || defined(_WIN32)
1.38 +# include <io.h>
1.39 +#endif
1.40 +
1.41 +#ifdef WINAPI_FAMILY
1.42 +# define open _open
1.43 +# define read _read
1.44 +# define write _write
1.45 +# define close _close
1.46 +#endif
1.47 +
1.48 +#ifdef NO_DEFLATE /* for compatibility with old definition */
1.49 +# define NO_GZCOMPRESS
1.50 +#endif
1.51 +
1.52 +#if defined(STDC99) || (defined(__TURBOC__) && __TURBOC__ >= 0x550)
1.53 +# ifndef HAVE_VSNPRINTF
1.54 +# define HAVE_VSNPRINTF
1.55 +# endif
1.56 +#endif
1.57 +
1.58 +#if defined(__CYGWIN__)
1.59 +# ifndef HAVE_VSNPRINTF
1.60 +# define HAVE_VSNPRINTF
1.61 +# endif
1.62 +#endif
1.63 +
1.64 +#if defined(MSDOS) && defined(__BORLANDC__) && (BORLANDC > 0x410)
1.65 +# ifndef HAVE_VSNPRINTF
1.66 +# define HAVE_VSNPRINTF
1.67 +# endif
1.68 +#endif
1.69 +
1.70 +#ifndef HAVE_VSNPRINTF
1.71 +# ifdef MSDOS
1.72 +/* vsnprintf may exist on some MS-DOS compilers (DJGPP?),
1.73 + but for now we just assume it doesn't. */
1.74 +# define NO_vsnprintf
1.75 +# endif
1.76 +# ifdef __TURBOC__
1.77 +# define NO_vsnprintf
1.78 +# endif
1.79 +# ifdef WIN32
1.80 +/* In Win32, vsnprintf is available as the "non-ANSI" _vsnprintf. */
1.81 +# if !defined(vsnprintf) && !defined(NO_vsnprintf)
1.82 +# if !defined(_MSC_VER) || ( defined(_MSC_VER) && _MSC_VER < 1500 )
1.83 +# define vsnprintf _vsnprintf
1.84 +# endif
1.85 +# endif
1.86 +# endif
1.87 +# ifdef __SASC
1.88 +# define NO_vsnprintf
1.89 +# endif
1.90 +# ifdef VMS
1.91 +# define NO_vsnprintf
1.92 +# endif
1.93 +# ifdef __OS400__
1.94 +# define NO_vsnprintf
1.95 +# endif
1.96 +# ifdef __MVS__
1.97 +# define NO_vsnprintf
1.98 +# endif
1.99 +#endif
1.100 +
1.101 +/* unlike snprintf (which is required in C99, yet still not supported by
1.102 + Microsoft more than a decade later!), _snprintf does not guarantee null
1.103 + termination of the result -- however this is only used in gzlib.c where
1.104 + the result is assured to fit in the space provided */
1.105 +#ifdef _MSC_VER
1.106 +# define snprintf _snprintf
1.107 +#endif
1.108 +
1.109 +#ifndef local
1.110 +# define local static
1.111 +#endif
1.112 +/* compile with -Dlocal if your debugger can't find static symbols */
1.113 +
1.114 +/* gz* functions always use library allocation functions */
1.115 +#ifndef STDC
1.116 + extern voidp malloc OF((uInt size));
1.117 + extern void free OF((voidpf ptr));
1.118 +#endif
1.119 +
1.120 +/* get errno and strerror definition */
1.121 +#if defined UNDER_CE
1.122 +# include <windows.h>
1.123 +# define zstrerror() gz_strwinerror((DWORD)GetLastError())
1.124 +#else
1.125 +# ifndef NO_STRERROR
1.126 +# include <errno.h>
1.127 +# define zstrerror() strerror(errno)
1.128 +# else
1.129 +# define zstrerror() "stdio error (consult errno)"
1.130 +# endif
1.131 +#endif
1.132 +
1.133 +/* provide prototypes for these when building zlib without LFS */
1.134 +#if !defined(_LARGEFILE64_SOURCE) || _LFS64_LARGEFILE-0 == 0
1.135 + ZEXTERN gzFile ZEXPORT gzopen64 OF((const char *, const char *));
1.136 + ZEXTERN z_off64_t ZEXPORT gzseek64 OF((gzFile, z_off64_t, int));
1.137 + ZEXTERN z_off64_t ZEXPORT gztell64 OF((gzFile));
1.138 + ZEXTERN z_off64_t ZEXPORT gzoffset64 OF((gzFile));
1.139 +#endif
1.140 +
1.141 +/* default memLevel */
1.142 +#if MAX_MEM_LEVEL >= 8
1.143 +# define DEF_MEM_LEVEL 8
1.144 +#else
1.145 +# define DEF_MEM_LEVEL MAX_MEM_LEVEL
1.146 +#endif
1.147 +
1.148 +/* default i/o buffer size -- double this for output when reading (this and
1.149 + twice this must be able to fit in an unsigned type) */
1.150 +#define GZBUFSIZE 8192
1.151 +
1.152 +/* gzip modes, also provide a little integrity check on the passed structure */
1.153 +#define GZ_NONE 0
1.154 +#define GZ_READ 7247
1.155 +#define GZ_WRITE 31153
1.156 +#define GZ_APPEND 1 /* mode set to GZ_WRITE after the file is opened */
1.157 +
1.158 +/* values for gz_state how */
1.159 +#define LOOK 0 /* look for a gzip header */
1.160 +#define COPY 1 /* copy input directly */
1.161 +#define GZIP 2 /* decompress a gzip stream */
1.162 +
1.163 +/* internal gzip file state data structure */
1.164 +typedef struct {
1.165 + /* exposed contents for gzgetc() macro */
1.166 + struct gzFile_s x; /* "x" for exposed */
1.167 + /* x.have: number of bytes available at x.next */
1.168 + /* x.next: next output data to deliver or write */
1.169 + /* x.pos: current position in uncompressed data */
1.170 + /* used for both reading and writing */
1.171 + int mode; /* see gzip modes above */
1.172 + int fd; /* file descriptor */
1.173 + char *path; /* path or fd for error messages */
1.174 + unsigned size; /* buffer size, zero if not allocated yet */
1.175 + unsigned want; /* requested buffer size, default is GZBUFSIZE */
1.176 + unsigned char *in; /* input buffer */
1.177 + unsigned char *out; /* output buffer (double-sized when reading) */
1.178 + int direct; /* 0 if processing gzip, 1 if transparent */
1.179 + /* just for reading */
1.180 + int how; /* 0: get header, 1: copy, 2: decompress */
1.181 + z_off64_t start; /* where the gzip data started, for rewinding */
1.182 + int eof; /* true if end of input file reached */
1.183 + int past; /* true if read requested past end */
1.184 + /* just for writing */
1.185 + int level; /* compression level */
1.186 + int strategy; /* compression strategy */
1.187 + /* seek request */
1.188 + z_off64_t skip; /* amount to skip (already rewound if backwards) */
1.189 + int seek; /* true if seek request pending */
1.190 + /* error information */
1.191 + int err; /* error code */
1.192 + char *msg; /* error message */
1.193 + /* zlib inflate or deflate stream */
1.194 + z_stream strm; /* stream structure in-place (not a pointer) */
1.195 +} gz_state;
1.196 +typedef gz_state FAR *gz_statep;
1.197 +
1.198 +/* shared functions */
1.199 +void ZLIB_INTERNAL gz_error OF((gz_statep, int, const char *));
1.200 +#if defined UNDER_CE
1.201 +char ZLIB_INTERNAL *gz_strwinerror OF((DWORD error));
1.202 +#endif
1.203 +
1.204 +/* GT_OFF(x), where x is an unsigned value, is true if x > maximum z_off64_t
1.205 + value -- needed when comparing unsigned to z_off64_t, which is signed
1.206 + (possible z_off64_t types off_t, off64_t, and long are all signed) */
1.207 +#ifdef INT_MAX
1.208 +# define GT_OFF(x) (sizeof(int) == sizeof(z_off64_t) && (x) > INT_MAX)
1.209 +#else
1.210 +unsigned ZLIB_INTERNAL gz_intmax OF((void));
1.211 +# define GT_OFF(x) (sizeof(int) == sizeof(z_off64_t) && (x) > gz_intmax())
1.212 +#endif
