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atot.c
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1995-06-12
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/*
* Copyright (c) 1990 Carnegie Mellon University
* All Rights Reserved.
*
* Permission to use, copy, modify and distribute this software and its
* documentation is hereby granted, provided that both the copyright
* notice and this permission notice appear in all copies of the
* software, derivative works or modified versions, and any portions
* thereof, and that both notices appear in supporting documentation.
*
* THE SOFTWARE IS PROVIDED "AS IS" AND CARNEGIE MELLON UNIVERSITY
* DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE, INCLUDING ALL
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS. IN NO EVENT
* SHALL CARNEGIE MELLON UNIVERSITY BE LIABLE FOR ANY SPECIAL, DIRECT,
* INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER
* RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF
* CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN
* CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
*
* Users of this software agree to return to Carnegie Mellon any
* improvements or extensions that they make and grant Carnegie the
* rights to redistribute these changes.
*
* Export of this software is permitted only after complying with the
* regulations of the U.S. Deptartment of Commerce relating to the
* Export of Technical Data.
*/
/*
* atot - convert ascii string to time
*
**********************************************************************
* HISTORY
* $Log: atot.c,v $
* Revision 1.2 90/12/11 17:50:25 mja
* Add copyright/disclaimer for distribution.
*
* 09-Oct-85 Glenn Marcy (gm0w) at Carnegie-Mellon University
* Fixed previous edit. Need to zero time fields of tm struct
* after parsedate() because it sets them to -1, which is
* considered bad form by gtime().
*
* 30-Apr-85 Steven Shafer (sas) at Carnegie-Mellon University
* Adapted for 4.2 BSD UNIX. Changed to new timeval struct, use
* gettimeofday(), and new parsedate().
*
* 03-Jan-80 Mike Accetta (mja) at Carnegie-Mellon University
* Created.
*
**********************************************************************
*
* Usage: t = atot (date);
* time_t t;
* char *date;
*
* Converts a date string to its corresponding UNIX date/time
* format using pdate(). The month, day and year default to
* today, hours, minutes and seconds default to 0.
*
* Returns converted time or -1 on error (bad date string).
*/
#include <sys/types.h>
#include <sys/time.h>
#include <c.h>
#include <libc.h>
extern time_t gtime();
time_t atot(str)
char *str;
{
struct timeval now;
struct timezone zone;
register struct tm *tm;
gettimeofday (&now,&zone);
tm = localtime(&now.tv_sec);
tm->tm_sec = tm->tm_min = tm->tm_hour = 0;
if (parsedate(str, tm, 1, 0, 0) < 0)
return(CERROR);
if (tm->tm_sec == -1 && tm->tm_min == -1 && tm->tm_hour == -1)
tm->tm_sec = tm->tm_min = tm->tm_hour = 0;
return(gtime(tm));
}