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
|
/*
dostime.c - routines for converting UNIX time to MS-DOS time.
Borrowed from Info-zip's unzip
Copyright (C) 1999 Bryan Burns
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.
*/
/* $Id: dostime.c,v 1.1 2000/12/09 03:08:23 apbianco Exp $
$Log: dostime.c,v $
Revision 1.1 2000/12/09 03:08:23 apbianco
2000-12-08 Alexandre Petit-Bianco <apbianco@cygnus.com>
* fastjar: Imported.
Revision 1.1.1.1 1999/12/06 03:09:12 toast
initial checkin..
Revision 1.6 1999/05/10 08:32:26 burnsbr
added dos2unixtime
Revision 1.5 1999/04/27 10:03:50 burnsbr
configure support
Revision 1.4 1999/04/26 21:55:19 burnsbr
switched from sys/time.h to time.h for better portability
Revision 1.3 1999/04/20 08:54:30 burnsbr
added GPL comment
Revision 1.2 1999/04/20 05:10:53 burnsbr
added RCS tags
*/
#include "config.h"
#ifdef TM_IN_SYS_TIME
#include <sys/time.h>
#else
#include <time.h>
#endif
#include "dostime.h"
/*
Copyright (C) 1990-1997 Mark Adler, Richard B. Wales, Jean-loup Gailly,
Kai Uwe Rommel, Onno van der Linden and Igor Mandrichenko.
Permission is granted to any individual or institution to use, copy, or
redistribute this software so long as all of the original files are included,
that it is not sold for profit, and that this copyright notice is retained.
*/
time_t dos2unixtime(dostime)
unsigned long dostime; /* DOS time to convert */
/* Return the Unix time_t value (GMT/UTC time) for the DOS format (local)
* time dostime, where dostime is a four byte value (date in most
* significant word, time in least significant word), see dostime()
* function.
*/
{
struct tm *t; /* argument for mktime() */
time_t clock = time(NULL);
t = localtime(&clock);
t->tm_isdst = -1; /* let mktime() determine if DST is in effect */
/* Convert DOS time to UNIX time_t format */
t->tm_sec = (((int)dostime) << 1) & 0x3e;
t->tm_min = (((int)dostime) >> 5) & 0x3f;
t->tm_hour = (((int)dostime) >> 11) & 0x1f;
t->tm_mday = (int)(dostime >> 16) & 0x1f;
t->tm_mon = ((int)(dostime >> 21) & 0x0f) - 1;
t->tm_year = ((int)(dostime >> 25) & 0x7f) + 80;
return mktime(t);
}
unsigned long dostime(y, n, d, h, m, s)
int y; /* year */
int n; /* month */
int d; /* day */
int h; /* hour */
int m; /* minute */
int s; /* second */
/* Convert the date y/n/d and time h:m:s to a four byte DOS date and
time (date in high two bytes, time in low two bytes allowing magnitude
comparison). */
{
return y < 1980 ? dostime(1980, 1, 1, 0, 0, 0) :
(((unsigned long)y - 1980) << 25) | ((unsigned long)n << 21) |
((unsigned long)d << 16) | ((unsigned long)h << 11) |
((unsigned long)m << 5) | ((unsigned long)s >> 1);
}
unsigned long unix2dostime(t)
time_t *t; /* unix time to convert */
/* Return the Unix time t in DOS format, rounded up to the next two
second boundary. */
{
time_t t_even;
struct tm *s; /* result of localtime() */
t_even = (*t + 1) & (~1); /* Round up to even seconds. */
s = localtime(&t_even); /* Use local time since MSDOS does. */
return dostime(s->tm_year + 1900, s->tm_mon + 1, s->tm_mday,
s->tm_hour, s->tm_min, s->tm_sec);
}
|
