압축을 해제할때 필요.
예제 소스
http://www.opensource.apple.com/source/gcc3/gcc3-1161/fastjar/dostime.c
/*
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 1.3 2001/09/17 20:35:55 zlaski Exp $
$Log: dostime.c,v $
Revision 1.3 2001/09/17 20:35:55 zlaski
Resolve conflicts due to 2001-09-12 FSF import.
Revision 1.2 2000/12/14 18:45:35 ghazi
Warning fixes:
* compress.c: Include stdlib.h and compress.h.
(rcsid): Delete.
(report_str_error): Make static.
(ez_inflate_str): Delete unused variable. Add parens in if-stmt.
(hrd_inflate_str): Likewise.
* compress.h (init_compression, end_compression, init_inflation,
end_inflation): Prototype void arguments.
* dostime.c (rcsid): Delete.
* jargrep.c: Include ctype.h, stdlib.h, zlib.h and compress.h.
Make functions static. Cast ctype function argument to `unsigned
char'. Add parens in if-stmts. Constify.
(Usage): Change into a macro.
(jargrep): Remove unused parameter.
* jartool.c: Constify. Add parens in if-stmts. Align
signed/unsigned char pointers in functions calls using casts.
(rcsid): Delete.
(list_jar): Fix printf format specifier.
(usage): Chop long string into bits. Reformat.
* pushback.c (rcsid): Delete.
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);
}
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