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partime.h

/* Parse a string, yielding a struct partime that describes it.  */

/* Copyright 1993, 1994, 1995, 1997 Paul Eggert
   Distributed under license by the Free Software Foundation, Inc.

   This file is part of RCS.

   RCS 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, or (at your option)
   any later version.

   RCS 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 RCS; see the file COPYING.
   If not, write to the Free Software Foundation,
   59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.

   Report problems and direct all questions to:

   rcs-bugs@cs.purdue.edu

 */

#define TM_UNDEFINED (-1)
#define TM_DEFINED(x) (0 <= (x))

/* #include <limits.h> if you want to use these symbols.  */
#define TM_LOCAL_ZONE LONG_MIN
#define TM_UNDEFINED_ZONE (LONG_MIN + 1)

struct partime
  {
    /* This structure describes the parsed time.
       Only the following tm_* values in it are used:
            sec, min, hour, mday, mon, year, wday, yday.
       If TM_UNDEFINED (value), the parser never found the value.
       The tm_year field is the actual year, not the year - 1900;
       but see ymodulus below.  */
    struct tm tm;

    /* If !TM_UNDEFINED (ymodulus),
       then tm.tm_year is actually modulo ymodulus.  */
    int ymodulus;

    /* Week of year, ISO 8601 style.
       If TM_UNDEFINED (yweek), the parser never found yweek.
       Weeks start on Mondays.
       Week 1 includes Jan 4.  */
    int yweek;

    /* Seconds east of UTC; or TM_LOCAL_ZONE or TM_UNDEFINED_ZONE.  */
    long zone;
  };

#if defined __STDC__ || has_prototypes
# define __PARTIME_P(x) x
#else
# define __PARTIME_P(x) ()
#endif

char *partime __PARTIME_P ((char const *, struct partime *));
char *parzone __PARTIME_P ((char const *, long *));

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