1 /* Parse a string, yielding a struct partime that describes it. */ 2 3 /* Copyright 1993, 1994, 1995 Paul Eggert 4 Distributed under license by the Free Software Foundation, Inc. 5 6 This file is part of RCS. 7 8 RCS is free software; you can redistribute it and/or modify 9 it under the terms of the GNU General Public License as published by 10 the Free Software Foundation; either version 2, or (at your option) 11 any later version. 12 13 RCS is distributed in the hope that it will be useful, 14 but WITHOUT ANY WARRANTY; without even the implied warranty of 15 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 16 GNU General Public License for more details. 17 18 You should have received a copy of the GNU General Public License 19 along with RCS; see the file COPYING. 20 If not, write to the Free Software Foundation, 21 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. 22 23 Report problems and direct all questions to: 24 25 rcs-bugs@cs.purdue.edu 26 27 */ 28 29 #define TM_UNDEFINED (-1) 30 #define TM_DEFINED(x) (0 <= (x)) 31 32 #define TM_UNDEFINED_ZONE ((long) -24 * 60 * 60) 33 #define TM_LOCAL_ZONE (TM_UNDEFINED_ZONE - 1) 34 35 struct partime { 36 /* 37 * This structure describes the parsed time. 38 * Only the following tm_* values in it are used: 39 * sec, min, hour, mday, mon, year, wday, yday. 40 * If TM_UNDEFINED(value), the parser never found the value. 41 * The tm_year field is the actual year, not the year - 1900; 42 * but see ymodulus below. 43 */ 44 struct tm tm; 45 46 /* 47 * If !TM_UNDEFINED(ymodulus), 48 * then tm.tm_year is actually modulo ymodulus. 49 */ 50 int ymodulus; 51 52 /* 53 * Week of year, ISO 8601 style. 54 * If TM_UNDEFINED(yweek), the parser never found yweek. 55 * Weeks start on Mondays. 56 * Week 1 includes Jan 4. 57 */ 58 int yweek; 59 60 /* Seconds east of UTC; or TM_LOCAL_ZONE or TM_UNDEFINED_ZONE. */ 61 long zone; 62 }; 63 64 #if defined(__STDC__) || has_prototypes 65 # define __PARTIME_P(x) x 66 #else 67 # define __PARTIME_P(x) () 68 #endif 69 70 char *partime __PARTIME_P((char const *, struct partime *)); 71 char *parzone __PARTIME_P((char const *, long *)); 72