Annotation of embedaddon/rsync/zlib/gzguts.h, revision 1.1
1.1 ! misho 1: /* gzguts.h -- zlib internal header definitions for gz* operations
! 2: * Copyright (C) 2004, 2005, 2010, 2011, 2012, 2013 Mark Adler
! 3: * For conditions of distribution and use, see copyright notice in zlib.h
! 4: */
! 5:
! 6: #ifdef _LARGEFILE64_SOURCE
! 7: # ifndef _LARGEFILE_SOURCE
! 8: # define _LARGEFILE_SOURCE 1
! 9: # endif
! 10: # ifdef _FILE_OFFSET_BITS
! 11: # undef _FILE_OFFSET_BITS
! 12: # endif
! 13: #endif
! 14:
! 15: #ifdef HAVE_HIDDEN
! 16: # define ZLIB_INTERNAL __attribute__((visibility ("hidden")))
! 17: #else
! 18: # define ZLIB_INTERNAL
! 19: #endif
! 20:
! 21: #include <stdio.h>
! 22: #include "zlib.h"
! 23: #ifdef STDC
! 24: # include <string.h>
! 25: # include <stdlib.h>
! 26: # include <limits.h>
! 27: #endif
! 28: #include <fcntl.h>
! 29:
! 30: #ifdef _WIN32
! 31: # include <stddef.h>
! 32: #endif
! 33:
! 34: #if defined(__TURBOC__) || defined(_MSC_VER) || defined(_WIN32)
! 35: # include <io.h>
! 36: #endif
! 37:
! 38: #ifdef WINAPI_FAMILY
! 39: # define open _open
! 40: # define read _read
! 41: # define write _write
! 42: # define close _close
! 43: #endif
! 44:
! 45: #ifdef NO_DEFLATE /* for compatibility with old definition */
! 46: # define NO_GZCOMPRESS
! 47: #endif
! 48:
! 49: #if defined(STDC99) || (defined(__TURBOC__) && __TURBOC__ >= 0x550)
! 50: # ifndef HAVE_VSNPRINTF
! 51: # define HAVE_VSNPRINTF
! 52: # endif
! 53: #endif
! 54:
! 55: #if defined(__CYGWIN__)
! 56: # ifndef HAVE_VSNPRINTF
! 57: # define HAVE_VSNPRINTF
! 58: # endif
! 59: #endif
! 60:
! 61: #if defined(MSDOS) && defined(__BORLANDC__) && (BORLANDC > 0x410)
! 62: # ifndef HAVE_VSNPRINTF
! 63: # define HAVE_VSNPRINTF
! 64: # endif
! 65: #endif
! 66:
! 67: #ifndef HAVE_VSNPRINTF
! 68: # ifdef MSDOS
! 69: /* vsnprintf may exist on some MS-DOS compilers (DJGPP?),
! 70: but for now we just assume it doesn't. */
! 71: # define NO_vsnprintf
! 72: # endif
! 73: # ifdef __TURBOC__
! 74: # define NO_vsnprintf
! 75: # endif
! 76: # ifdef WIN32
! 77: /* In Win32, vsnprintf is available as the "non-ANSI" _vsnprintf. */
! 78: # if !defined(vsnprintf) && !defined(NO_vsnprintf)
! 79: # if !defined(_MSC_VER) || ( defined(_MSC_VER) && _MSC_VER < 1500 )
! 80: # define vsnprintf _vsnprintf
! 81: # endif
! 82: # endif
! 83: # endif
! 84: # ifdef __SASC
! 85: # define NO_vsnprintf
! 86: # endif
! 87: # ifdef VMS
! 88: # define NO_vsnprintf
! 89: # endif
! 90: # ifdef __OS400__
! 91: # define NO_vsnprintf
! 92: # endif
! 93: # ifdef __MVS__
! 94: # define NO_vsnprintf
! 95: # endif
! 96: #endif
! 97:
! 98: /* unlike snprintf (which is required in C99, yet still not supported by
! 99: Microsoft more than a decade later!), _snprintf does not guarantee null
! 100: termination of the result -- however this is only used in gzlib.c where
! 101: the result is assured to fit in the space provided */
! 102: #ifdef _MSC_VER
! 103: # define snprintf _snprintf
! 104: #endif
! 105:
! 106: #ifndef local
! 107: # define local static
! 108: #endif
! 109: /* compile with -Dlocal if your debugger can't find static symbols */
! 110:
! 111: /* gz* functions always use library allocation functions */
! 112: #ifndef STDC
! 113: extern voidp malloc OF((uInt size));
! 114: extern void free OF((voidpf ptr));
! 115: #endif
! 116:
! 117: /* get errno and strerror definition */
! 118: #if defined UNDER_CE
! 119: # include <windows.h>
! 120: # define zstrerror() gz_strwinerror((DWORD)GetLastError())
! 121: #else
! 122: # ifndef NO_STRERROR
! 123: # include <errno.h>
! 124: # define zstrerror() strerror(errno)
! 125: # else
! 126: # define zstrerror() "stdio error (consult errno)"
! 127: # endif
! 128: #endif
! 129:
! 130: /* provide prototypes for these when building zlib without LFS */
! 131: #if !defined(_LARGEFILE64_SOURCE) || _LFS64_LARGEFILE-0 == 0
! 132: ZEXTERN gzFile ZEXPORT gzopen64 OF((const char *, const char *));
! 133: ZEXTERN z_off64_t ZEXPORT gzseek64 OF((gzFile, z_off64_t, int));
! 134: ZEXTERN z_off64_t ZEXPORT gztell64 OF((gzFile));
! 135: ZEXTERN z_off64_t ZEXPORT gzoffset64 OF((gzFile));
! 136: #endif
! 137:
! 138: /* default memLevel */
! 139: #if MAX_MEM_LEVEL >= 8
! 140: # define DEF_MEM_LEVEL 8
! 141: #else
! 142: # define DEF_MEM_LEVEL MAX_MEM_LEVEL
! 143: #endif
! 144:
! 145: /* default i/o buffer size -- double this for output when reading (this and
! 146: twice this must be able to fit in an unsigned type) */
! 147: #define GZBUFSIZE 8192
! 148:
! 149: /* gzip modes, also provide a little integrity check on the passed structure */
! 150: #define GZ_NONE 0
! 151: #define GZ_READ 7247
! 152: #define GZ_WRITE 31153
! 153: #define GZ_APPEND 1 /* mode set to GZ_WRITE after the file is opened */
! 154:
! 155: /* values for gz_state how */
! 156: #define LOOK 0 /* look for a gzip header */
! 157: #define COPY 1 /* copy input directly */
! 158: #define GZIP 2 /* decompress a gzip stream */
! 159:
! 160: /* internal gzip file state data structure */
! 161: typedef struct {
! 162: /* exposed contents for gzgetc() macro */
! 163: struct gzFile_s x; /* "x" for exposed */
! 164: /* x.have: number of bytes available at x.next */
! 165: /* x.next: next output data to deliver or write */
! 166: /* x.pos: current position in uncompressed data */
! 167: /* used for both reading and writing */
! 168: int mode; /* see gzip modes above */
! 169: int fd; /* file descriptor */
! 170: char *path; /* path or fd for error messages */
! 171: unsigned size; /* buffer size, zero if not allocated yet */
! 172: unsigned want; /* requested buffer size, default is GZBUFSIZE */
! 173: unsigned char *in; /* input buffer */
! 174: unsigned char *out; /* output buffer (double-sized when reading) */
! 175: int direct; /* 0 if processing gzip, 1 if transparent */
! 176: /* just for reading */
! 177: int how; /* 0: get header, 1: copy, 2: decompress */
! 178: z_off64_t start; /* where the gzip data started, for rewinding */
! 179: int eof; /* true if end of input file reached */
! 180: int past; /* true if read requested past end */
! 181: /* just for writing */
! 182: int level; /* compression level */
! 183: int strategy; /* compression strategy */
! 184: /* seek request */
! 185: z_off64_t skip; /* amount to skip (already rewound if backwards) */
! 186: int seek; /* true if seek request pending */
! 187: /* error information */
! 188: int err; /* error code */
! 189: char *msg; /* error message */
! 190: /* zlib inflate or deflate stream */
! 191: z_stream strm; /* stream structure in-place (not a pointer) */
! 192: } gz_state;
! 193: typedef gz_state FAR *gz_statep;
! 194:
! 195: /* shared functions */
! 196: void ZLIB_INTERNAL gz_error OF((gz_statep, int, const char *));
! 197: #if defined UNDER_CE
! 198: char ZLIB_INTERNAL *gz_strwinerror OF((DWORD error));
! 199: #endif
! 200:
! 201: /* GT_OFF(x), where x is an unsigned value, is true if x > maximum z_off64_t
! 202: value -- needed when comparing unsigned to z_off64_t, which is signed
! 203: (possible z_off64_t types off_t, off64_t, and long are all signed) */
! 204: #ifdef INT_MAX
! 205: # define GT_OFF(x) (sizeof(int) == sizeof(z_off64_t) && (x) > INT_MAX)
! 206: #else
! 207: unsigned ZLIB_INTERNAL gz_intmax OF((void));
! 208: # define GT_OFF(x) (sizeof(int) == sizeof(z_off64_t) && (x) > gz_intmax())
! 209: #endif
FreeBSD-CVSweb <freebsd-cvsweb@FreeBSD.org>
![[BACK]](/icons/cvsweb/back.gif){kind=icon}
Return to gzguts.h CVS log ![[TXT]](/icons/cvsweb/text.gif){kind=icon}
![[DIR]](/icons/cvsweb/dir.gif){kind=icon}
Up to [ELWIX - Embedded LightWeight unIX -] / embedaddon / rsync / zlib