From 87dd481901058f9f329ea4420cbadd22c7b15a47 Mon Sep 17 00:00:00 2001 From: tromey Date: Thu, 7 Nov 2002 14:07:19 +0000 Subject: [PATCH] * dostime.c: Rewrote from scratch. * dostime.h (dostime): Removed. git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@58892 138bc75d-0d04-0410-961f-82ee72b054a4 --- fastjar/ChangeLog | 9 ++++ fastjar/dostime.c | 147 +++++++++++++++++------------------------------------- fastjar/dostime.h | 3 +- 3 files changed, 57 insertions(+), 102 deletions(-) diff --git a/fastjar/ChangeLog b/fastjar/ChangeLog index 1c05ac7..bb02ab9 100644 --- a/fastjar/ChangeLog +++ b/fastjar/ChangeLog @@ -1,3 +1,12 @@ +2002-11-07 Tom Tromey + + * dostime.c: Rewrote from scratch. + * dostime.h (dostime): Removed. + +2002-10-24 Tom Tromey + + * dostime.c: Removed Id and Log. + 2002-10-20 Tom Tromey * jartool.c: Use mode 0666 when opening new file. diff --git a/fastjar/dostime.c b/fastjar/dostime.c index 834ef42..b3c76e5 100644 --- a/fastjar/dostime.c +++ b/fastjar/dostime.c @@ -1,129 +1,76 @@ -/* - dostime.c - routines for converting UNIX time to MS-DOS time. - - Borrowed from Info-zip's unzip +/* dostime.c - convert dos time to/from time_t. - Copyright (C) 1999 Bryan Burns + Copyright (C) 2002 Free Software Foundation 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 - - * 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 - -*/ -#include "config.h" - -#ifdef TM_IN_SYS_TIME -#include -#else #include -#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. - */ + * The specification to which this was written. From Joe Buck. + * The DOS format appears to have only 2 second resolution. It is an + * unsigned long, and ORs together + * + * (year-1980)<<25 + * month<<21 (month is tm_mon + 1, 1=Jan through 12=Dec) + * day<<16 (day is tm_mday, 1-31) + * hour<<11 (hour is tm_hour, 0-23) + * min<<5 (min is tm_min, 0-59) + * sec>>1 (sec is tm_sec, 0-59, that's right, we throw away the LSB) + * + * DOS uses local time, so the localtime() call is used to turn the time_t + * into a struct tm. + */ + +time_t +dos2unixtime (unsigned long dostime) { - struct tm *t; /* argument for mktime() */ - time_t clock = time(NULL); + struct tm ltime; + time_t now = 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; + /* Call localtime to initialize timezone in TIME. */ + ltime = *localtime (&now); - return mktime(t); -} + ltime.tm_year = (dostime >> 25) + 80; + ltime.tm_mon = 1 + ((dostime >> 21) & 0x0f); + ltime.tm_mday = (dostime >> 16) & 0x1f; + ltime.tm_hour = (dostime >> 11) & 0x0f; + ltime.tm_min = (dostime >> 5) & 0x3f; + ltime.tm_sec = (dostime & 0x0f) << 1; -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); -} + ltime.tm_wday = -1; + ltime.tm_yday = -1; + ltime.tm_isdst = -1; + return mktime (<ime); +} -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. */ +unsigned long +unix2dostime (time_t *time) { - 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); + struct tm *ltime = localtime (time); + + return ((ltime->tm_year - 80) << 25 + | ltime->tm_mon << 21 + | (ltime->tm_mday - 1) << 16 + | ltime->tm_hour << 11 + | ltime->tm_min << 5 + | ltime->tm_sec >> 1); } - diff --git a/fastjar/dostime.h b/fastjar/dostime.h index 6f6931f..822c8e0 100644 --- a/fastjar/dostime.h +++ b/fastjar/dostime.h @@ -1,6 +1,6 @@ /* dostime.h - function prototypes - Copyright (C) 1999 Bryan Burns + Copyright (C) 1999, 2002 Bryan Burns This program is free software; you can redistribute it and/or modify it under the terms of the GNU General Public License @@ -18,5 +18,4 @@ */ time_t dos2unixtime(unsigned long dostime); -unsigned long dostime(int, int, int, int, int, int); unsigned long unix2dostime(time_t*); -- 2.7.4