1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
|
/* xdelta3 - delta compression tools and library
* Copyright (C) 2011, 2012 Joshua P. MacDonald
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*/
#ifndef XDELTA3_INTERNAL_H__
#define XDELTA3_INTERNAL_H__
#include "xdelta3.h"
typedef struct _main_file main_file;
typedef struct _main_extcomp main_extcomp;
void main_buffree (void *ptr);
void* main_bufalloc (size_t size);
void main_file_init (main_file *xfile);
int main_file_close (main_file *xfile);
void main_file_cleanup (main_file *xfile);
int main_file_isopen (main_file *xfile);
int main_file_open (main_file *xfile, const char* name, int mode);
int main_file_exists (main_file *xfile);
int xd3_whole_append_window (xd3_stream *stream);
int xd3_main_cmdline (int argc, char **argv);
int main_file_read (main_file *ifile,
uint8_t *buf,
size_t size,
size_t *nread,
const char *msg);
int main_file_write (main_file *ofile, uint8_t *buf,
usize_t size, const char *msg);
int test_compare_files (const char* f0, const char* f1);
usize_t xd3_bytes_on_srcblk (xd3_source *src, xoff_t blkno);
xoff_t xd3_source_eof(const xd3_source *src);
uint32_t xd3_large_cksum_update (uint32_t cksum,
const uint8_t *base,
usize_t look);
int xd3_encode_init_full (xd3_stream *stream);
#if PYTHON_MODULE || SWIG_MODULE || NOT_MAIN
int xd3_main_cmdline (int argc, char **argv);
#endif
/* main_file->mode values */
typedef enum
{
XO_READ = 0,
XO_WRITE = 1
} main_file_modes;
struct _main_file
{
#if XD3_STDIO
FILE *file;
#elif XD3_POSIX
int file;
#elif XD3_WIN32
HANDLE file;
#endif
int mode; /* XO_READ and XO_WRITE */
const char *filename; /* File name or /dev/stdin,
* /dev/stdout, /dev/stderr. */
char *filename_copy; /* File name or /dev/stdin,
* /dev/stdout, /dev/stderr. */
const char *realname; /* File name or /dev/stdin,
* /dev/stdout, /dev/stderr. */
const main_extcomp *compressor; /* External compression struct. */
int flags; /* RD_FIRST, RD_NONEXTERNAL, ... */
xoff_t nread; /* for input position */
xoff_t nwrite; /* for output position */
uint8_t *snprintf_buf; /* internal snprintf() use */
int size_known; /* Set by main_set_souze */
xoff_t source_position; /* for avoiding seek in getblk_func */
int seek_failed; /* after seek fails once, try FIFO */
};
/* According to the internet, Windows vsnprintf() differs from most
* Unix implementations regarding the terminating 0 when the boundary
* condition is met. It doesn't matter here, we don't rely on the
* trailing 0. Besides, both Windows and DJGPP vsnprintf return -1
* upon truncation, which isn't C99 compliant. To overcome this,
* recent MinGW runtimes provided their own vsnprintf (notice the
* absence of the '_' prefix) but they were initially buggy. So,
* always use the native '_'-prefixed version with Win32. */
#ifdef _WIN32
#define vsnprintf_func(str,size,fmt,args) \
_vsnprintf_s(str,size,size-1,fmt,args)
#define snprintf_func(str,size,fmt,...) \
_snprintf_s(str,size,size-1,fmt,__VA_ARGS__)
#else
#define vsnprintf_func vsnprintf
#define snprintf_func snprintf
#endif
#define short_sprintf(sb,fmt,...) \
snprintf_func((sb).buf,sizeof((sb).buf),fmt,__VA_ARGS__)
/* Type used for short snprintf calls. */
typedef struct {
char buf[48];
} shortbuf;
/* Prior to SVN 303 this function was only defined in DJGPP and WIN32
* environments and other platforms would use the builtin snprintf()
* with an arrangement of macros below. In OS X 10.6, Apply made
* snprintf() a macro, which defeated those macros (since snprintf
* would be evaluated before its argument macros were expanded,
* therefore always define xsnprintf_func. */
#undef PRINTF_ATTRIBUTE
#ifdef __GNUC__
/* Let's just assume no one uses gcc 2.x! */
#define PRINTF_ATTRIBUTE(x,y) __attribute__ ((__format__ (__printf__, x, y)))
#else
#define PRINTF_ATTRIBUTE(x,y)
#endif
/* Underlying xprintf() */
int xsnprintf_func (char *str, int n, const char *fmt, ...)
PRINTF_ATTRIBUTE(3,4);
/* XPR(NT "", ...) (used by main) prefixes an "xdelta3: " to the output. */
void xprintf(const char *fmt, ...) PRINTF_ATTRIBUTE(1,2);
#define XPR xprintf
#define NT "xdelta3: "
#define NTR ""
#ifndef UINT32_MAX
#define UINT32_MAX 4294967295U
#endif
#ifndef UINT64_MAX
#define UINT64_MAX 18446744073709551615ULL
#endif
#endif // XDELTA3_INTERNAL_H__
|
