1/* gzguts.h -- zlib internal header definitions for gz* operations
2 * Copyright (C) 2004, 2005, 2010 Mark Adler
3 * For conditions of distribution and use, see copyright notice in zlib.h
4 */
5
| 1/* gzguts.h -- zlib internal header definitions for gz* operations
2 * Copyright (C) 2004, 2005, 2010 Mark Adler
3 * For conditions of distribution and use, see copyright notice in zlib.h
4 */
5
|
6#ifdef _LARGEFILE64_SOURCE
| 6#if _LARGEFILE64_SOURCE == 1
|
7# ifndef _LARGEFILE_SOURCE
| 7# ifndef _LARGEFILE_SOURCE
|
8# define _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#define ZLIB_INTERNAL
16
17#include <stdio.h>
18#include "zlib.h"
19#ifdef STDC
20# include <string.h>
21# include <stdlib.h>
22# include <limits.h>
23#endif
24#include <fcntl.h>
25
26#ifdef NO_DEFLATE /* for compatibility with old definition */
27# define NO_GZCOMPRESS
28#endif
29
30#ifdef _MSC_VER
31# include <io.h>
32# define vsnprintf _vsnprintf
33#endif
34
35#ifndef local
36# define local static
37#endif
38/* compile with -Dlocal if your debugger can't find static symbols */
39
40/* gz* functions always use library allocation functions */
41#ifndef STDC
42 extern voidp malloc OF((uInt size));
43 extern void free OF((voidpf ptr));
44#endif
45
46/* get errno and strerror definition */
| 9# endif
10# ifdef _FILE_OFFSET_BITS
11# undef _FILE_OFFSET_BITS
12# endif
13#endif
14
15#define ZLIB_INTERNAL
16
17#include <stdio.h>
18#include "zlib.h"
19#ifdef STDC
20# include <string.h>
21# include <stdlib.h>
22# include <limits.h>
23#endif
24#include <fcntl.h>
25
26#ifdef NO_DEFLATE /* for compatibility with old definition */
27# define NO_GZCOMPRESS
28#endif
29
30#ifdef _MSC_VER
31# include <io.h>
32# define vsnprintf _vsnprintf
33#endif
34
35#ifndef local
36# define local static
37#endif
38/* compile with -Dlocal if your debugger can't find static symbols */
39
40/* gz* functions always use library allocation functions */
41#ifndef STDC
42 extern voidp malloc OF((uInt size));
43 extern void free OF((voidpf ptr));
44#endif
45
46/* get errno and strerror definition */
|
47#if defined UNDER_CE && defined NO_ERRNO_H
| 47#if defined UNDER_CE
|
48# include <windows.h>
49# define zstrerror() gz_strwinerror((DWORD)GetLastError())
50#else
51# ifdef STDC
52# include <errno.h>
53# define zstrerror() strerror(errno)
54# else
55# define zstrerror() "stdio error (consult errno)"
56# endif
57#endif
58
| 48# include <windows.h>
49# define zstrerror() gz_strwinerror((DWORD)GetLastError())
50#else
51# ifdef STDC
52# include <errno.h>
53# define zstrerror() strerror(errno)
54# else
55# define zstrerror() "stdio error (consult errno)"
56# endif
57#endif
58
|
59/* MVS fdopen() */
60#ifdef __MVS__
61 #pragma map (fdopen , "\174\174FDOPEN")
62 FILE *fdopen(int, const char *);
63#endif
64
65#ifdef _LARGEFILE64_SOURCE
| 59#if _LARGEFILE64_SOURCE == 1
|
66# define z_off64_t off64_t
67#else
68# define z_off64_t z_off_t
69#endif
70
71/* default i/o buffer size -- double this for output when reading */
72#define GZBUFSIZE 8192
73
74/* gzip modes, also provide a little integrity check on the passed structure */
75#define GZ_NONE 0
76#define GZ_READ 7247
77#define GZ_WRITE 31153
78#define GZ_APPEND 1 /* mode set to GZ_WRITE after the file is opened */
79
80/* values for gz_state how */
81#define LOOK 0 /* look for a gzip header */
82#define COPY 1 /* copy input directly */
83#define GZIP 2 /* decompress a gzip stream */
84
85/* internal gzip file state data structure */
86typedef struct {
87 /* used for both reading and writing */
88 int mode; /* see gzip modes above */
89 int fd; /* file descriptor */
90 char *path; /* path or fd for error messages */
91 z_off64_t pos; /* current position in uncompressed data */
92 unsigned size; /* buffer size, zero if not allocated yet */
93 unsigned want; /* requested buffer size, default is GZBUFSIZE */
94 unsigned char *in; /* input buffer */
95 unsigned char *out; /* output buffer (double-sized when reading) */
96 unsigned char *next; /* next output data to deliver or write */
97 /* just for reading */
98 unsigned have; /* amount of output data unused at next */
99 int eof; /* true if end of input file reached */
100 z_off64_t start; /* where the gzip data started, for rewinding */
101 z_off64_t raw; /* where the raw data started, for seeking */
102 int how; /* 0: get header, 1: copy, 2: decompress */
103 int direct; /* true if last read direct, false if gzip */
104 /* just for writing */
105 int level; /* compression level */
106 int strategy; /* compression strategy */
107 /* seek request */
108 z_off64_t skip; /* amount to skip (already rewound if backwards) */
109 int seek; /* true if seek request pending */
110 /* error information */
111 int err; /* error code */
112 char *msg; /* error message */
113 /* zlib inflate or deflate stream */
114 z_stream strm; /* stream structure in-place (not a pointer) */
115} gz_state;
116typedef gz_state FAR *gz_statep;
117
118/* shared functions */
119ZEXTERN void ZEXPORT gz_error OF((gz_statep, int, const char *));
| 60# define z_off64_t off64_t
61#else
62# define z_off64_t z_off_t
63#endif
64
65/* default i/o buffer size -- double this for output when reading */
66#define GZBUFSIZE 8192
67
68/* gzip modes, also provide a little integrity check on the passed structure */
69#define GZ_NONE 0
70#define GZ_READ 7247
71#define GZ_WRITE 31153
72#define GZ_APPEND 1 /* mode set to GZ_WRITE after the file is opened */
73
74/* values for gz_state how */
75#define LOOK 0 /* look for a gzip header */
76#define COPY 1 /* copy input directly */
77#define GZIP 2 /* decompress a gzip stream */
78
79/* internal gzip file state data structure */
80typedef struct {
81 /* used for both reading and writing */
82 int mode; /* see gzip modes above */
83 int fd; /* file descriptor */
84 char *path; /* path or fd for error messages */
85 z_off64_t pos; /* current position in uncompressed data */
86 unsigned size; /* buffer size, zero if not allocated yet */
87 unsigned want; /* requested buffer size, default is GZBUFSIZE */
88 unsigned char *in; /* input buffer */
89 unsigned char *out; /* output buffer (double-sized when reading) */
90 unsigned char *next; /* next output data to deliver or write */
91 /* just for reading */
92 unsigned have; /* amount of output data unused at next */
93 int eof; /* true if end of input file reached */
94 z_off64_t start; /* where the gzip data started, for rewinding */
95 z_off64_t raw; /* where the raw data started, for seeking */
96 int how; /* 0: get header, 1: copy, 2: decompress */
97 int direct; /* true if last read direct, false if gzip */
98 /* just for writing */
99 int level; /* compression level */
100 int strategy; /* compression strategy */
101 /* seek request */
102 z_off64_t skip; /* amount to skip (already rewound if backwards) */
103 int seek; /* true if seek request pending */
104 /* error information */
105 int err; /* error code */
106 char *msg; /* error message */
107 /* zlib inflate or deflate stream */
108 z_stream strm; /* stream structure in-place (not a pointer) */
109} gz_state;
110typedef gz_state FAR *gz_statep;
111
112/* shared functions */
113ZEXTERN void ZEXPORT gz_error OF((gz_statep, int, const char *));
|
120#if defined UNDER_CE && defined NO_ERRNO_H
| 114#if defined UNDER_CE
|
121ZEXTERN char ZEXPORT *gz_strwinerror OF((DWORD error));
122#endif
123
124/* GT_OFF(x), where x is an unsigned value, is true if x > maximum z_off64_t
125 value -- needed when comparing unsigned to z_off64_t, which is signed
126 (possible z_off64_t types off_t, off64_t, and long are all signed) */
127#ifdef INT_MAX
128# define GT_OFF(x) (sizeof(int) == sizeof(z_off64_t) && (x) > INT_MAX)
129#else
130ZEXTERN unsigned ZEXPORT gz_intmax OF((void));
131# define GT_OFF(x) (sizeof(int) == sizeof(z_off64_t) && (x) > gz_intmax())
132#endif
| 115ZEXTERN char ZEXPORT *gz_strwinerror OF((DWORD error));
116#endif
117
118/* GT_OFF(x), where x is an unsigned value, is true if x > maximum z_off64_t
119 value -- needed when comparing unsigned to z_off64_t, which is signed
120 (possible z_off64_t types off_t, off64_t, and long are all signed) */
121#ifdef INT_MAX
122# define GT_OFF(x) (sizeof(int) == sizeof(z_off64_t) && (x) > INT_MAX)
123#else
124ZEXTERN unsigned ZEXPORT gz_intmax OF((void));
125# define GT_OFF(x) (sizeof(int) == sizeof(z_off64_t) && (x) > gz_intmax())
126#endif
|