Annotation of src/usr.bin/at/parsetime.c, Revision 1.18
1.18 ! krw 1: /* $OpenBSD: parsetime.c,v 1.17 2009/10/27 23:59:35 deraadt Exp $ */
1.1 deraadt 2:
1.14 millert 3: /*
1.1 deraadt 4: * parsetime.c - parse time for at(1)
1.4 millert 5: * Copyright (C) 1993, 1994 Thomas Koenig
1.1 deraadt 6: *
7: * modifications for english-language times
8: * Copyright (C) 1993 David Parsons
9: *
10: * Redistribution and use in source and binary forms, with or without
11: * modification, are permitted provided that the following conditions
12: * are met:
13: * 1. Redistributions of source code must retain the above copyright
14: * notice, this list of conditions and the following disclaimer.
15: * 2. The name of the author(s) may not be used to endorse or promote
16: * products derived from this software without specific prior written
17: * permission.
18: *
19: * THIS SOFTWARE IS PROVIDED BY THE AUTHOR(S) ``AS IS'' AND ANY EXPRESS OR
20: * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
21: * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
1.4 millert 22: * IN NO EVENT SHALL THE AUTHOR(S) BE LIABLE FOR ANY DIRECT, INDIRECT,
1.1 deraadt 23: * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
24: * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
25: * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
1.18 ! krw 26: * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
1.1 deraadt 27: * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
28: * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
29: *
30: * at [NOW] PLUS NUMBER MINUTES|HOURS|DAYS|WEEKS
31: * /NUMBER [DOT NUMBER] [AM|PM]\ /[MONTH NUMBER [NUMBER]] \
32: * |NOON | |[TOMORROW] |
1.4 millert 33: * |MIDNIGHT | |[DAY OF WEEK] |
34: * \TEATIME / |NUMBER [SLASH NUMBER [SLASH NUMBER]]|
35: * \PLUS NUMBER MINUTES|HOURS|DAYS|WEEKS/
1.1 deraadt 36: */
37:
38: #include <sys/types.h>
39: #include <errno.h>
1.11 millert 40: #include <ctype.h>
1.1 deraadt 41: #include <stdio.h>
42: #include <stdlib.h>
43: #include <string.h>
44: #include <time.h>
1.8 alex 45: #include <tzfile.h>
1.1 deraadt 46: #include <unistd.h>
47:
1.13 millert 48: #include "globals.h"
1.1 deraadt 49: #include "at.h"
50:
51: /* Structures and unions */
52:
53: enum { /* symbols */
1.4 millert 54: MIDNIGHT, NOON, TEATIME,
55: PM, AM, TOMORROW, TODAY, NOW,
56: MINUTES, HOURS, DAYS, WEEKS,
57: NUMBER, PLUS, DOT, SLASH, ID, JUNK,
58: JAN, FEB, MAR, APR, MAY, JUN,
59: JUL, AUG, SEP, OCT, NOV, DEC,
60: SUN, MON, TUE, WED, THU, FRI, SAT
1.1 deraadt 61: };
62:
63: /*
64: * parse translation table - table driven parsers can be your FRIEND!
65: */
66: struct {
1.4 millert 67: char *name; /* token name */
68: int value; /* token id */
69: int plural; /* is this plural? */
1.1 deraadt 70: } Specials[] = {
1.4 millert 71: { "midnight", MIDNIGHT, 0 }, /* 00:00:00 of today or tomorrow */
72: { "noon", NOON, 0 }, /* 12:00:00 of today or tomorrow */
73: { "teatime", TEATIME, 0 }, /* 16:00:00 of today or tomorrow */
74: { "am", AM, 0 }, /* morning times for 0-12 clock */
75: { "pm", PM, 0 }, /* evening times for 0-12 clock */
76: { "tomorrow", TOMORROW, 0 }, /* execute 24 hours from time */
77: { "today", TODAY, 0 }, /* execute today - don't advance time */
78: { "now", NOW, 0 }, /* opt prefix for PLUS */
79:
80: { "minute", MINUTES, 0 }, /* minutes multiplier */
81: { "min", MINUTES, 0 },
82: { "m", MINUTES, 0 },
83: { "minutes", MINUTES, 1 }, /* (pluralized) */
84: { "hour", HOURS, 0 }, /* hours ... */
85: { "hr", HOURS, 0 }, /* abbreviated */
86: { "h", HOURS, 0 },
87: { "hours", HOURS, 1 }, /* (pluralized) */
88: { "day", DAYS, 0 }, /* days ... */
89: { "d", DAYS, 0 },
90: { "days", DAYS, 1 }, /* (pluralized) */
91: { "week", WEEKS, 0 }, /* week ... */
92: { "w", WEEKS, 0 },
93: { "weeks", WEEKS, 1 }, /* (pluralized) */
94: { "jan", JAN, 0 },
95: { "feb", FEB, 0 },
96: { "mar", MAR, 0 },
97: { "apr", APR, 0 },
98: { "may", MAY, 0 },
99: { "jun", JUN, 0 },
100: { "jul", JUL, 0 },
101: { "aug", AUG, 0 },
102: { "sep", SEP, 0 },
103: { "oct", OCT, 0 },
104: { "nov", NOV, 0 },
105: { "dec", DEC, 0 },
1.7 deraadt 106: { "january", JAN,0 },
107: { "february", FEB,0 },
108: { "march", MAR,0 },
109: { "april", APR,0 },
110: { "may", MAY,0 },
111: { "june", JUN,0 },
112: { "july", JUL,0 },
113: { "august", AUG,0 },
114: { "september", SEP,0 },
115: { "october", OCT,0 },
116: { "november", NOV,0 },
117: { "december", DEC,0 },
1.4 millert 118: { "sunday", SUN, 0 },
119: { "sun", SUN, 0 },
120: { "monday", MON, 0 },
121: { "mon", MON, 0 },
122: { "tuesday", TUE, 0 },
123: { "tue", TUE, 0 },
124: { "wednesday", WED, 0 },
125: { "wed", WED, 0 },
126: { "thursday", THU, 0 },
127: { "thu", THU, 0 },
128: { "friday", FRI, 0 },
129: { "fri", FRI, 0 },
130: { "saturday", SAT, 0 },
131: { "sat", SAT, 0 },
132: };
1.1 deraadt 133:
134: static char **scp; /* scanner - pointer at arglist */
1.15 cloder 135: static int scc; /* scanner - count of remaining arguments */
1.1 deraadt 136: static char *sct; /* scanner - next char pointer in current argument */
137: static int need; /* scanner - need to advance to next argument */
138: static char *sc_token; /* scanner - token buffer */
1.12 todd 139: static size_t sc_len; /* scanner - length of token buffer */
1.1 deraadt 140: static int sc_tokid; /* scanner - token id */
1.4 millert 141: static int sc_tokplur; /* scanner - is token plural? */
1.1 deraadt 142:
143: /*
144: * parse a token, checking if it's something special to us
145: */
146: static int
1.10 millert 147: parse_token(char *arg)
1.1 deraadt 148: {
1.4 millert 149: int i;
1.1 deraadt 150:
1.4 millert 151: for (i=0; i < sizeof(Specials) / sizeof(Specials[0]); i++) {
152: if (strcasecmp(Specials[i].name, arg) == 0) {
153: sc_tokplur = Specials[i].plural;
154: return (sc_tokid = Specials[i].value);
155: }
1.1 deraadt 156: }
157:
1.4 millert 158: /* not special - must be some random id */
159: return (ID);
1.11 millert 160: }
1.1 deraadt 161:
162:
163: /*
164: * init_scanner() sets up the scanner to eat arguments
165: */
1.13 millert 166: static int
1.10 millert 167: init_scanner(int argc, char **argv)
1.1 deraadt 168: {
1.4 millert 169: scp = argv;
170: scc = argc;
171: need = 1;
172: sc_len = 1;
173: while (argc-- > 0)
174: sc_len += strlen(*argv++);
175:
1.13 millert 176: if ((sc_token = (char *) malloc(sc_len)) == NULL) {
177: fprintf(stderr, "%s: Insufficient virtual memory\n",
178: ProgramName);
179: return (-1);
180: }
181: return (0);
1.11 millert 182: }
1.1 deraadt 183:
184: /*
185: * token() fetches a token from the input stream
186: */
187: static int
1.10 millert 188: token(void)
1.1 deraadt 189: {
1.4 millert 190: int idx;
1.1 deraadt 191:
1.10 millert 192: for (;;) {
1.13 millert 193: bzero(sc_token, sc_len);
1.4 millert 194: sc_tokid = EOF;
195: sc_tokplur = 0;
196: idx = 0;
1.1 deraadt 197:
1.4 millert 198: /*
199: * if we need to read another argument, walk along the
200: * argument list; when we fall off the arglist, we'll
201: * just return EOF forever
202: */
203: if (need) {
204: if (scc < 1)
205: return (sc_tokid);
206: sct = *scp;
207: scp++;
208: scc--;
209: need = 0;
210: }
211: /*
212: * eat whitespace now - if we walk off the end of the argument,
213: * we'll continue, which puts us up at the top of the while loop
214: * to fetch the next argument in
215: */
216: while (isspace(*sct))
217: ++sct;
218: if (!*sct) {
219: need = 1;
220: continue;
221: }
1.1 deraadt 222:
1.4 millert 223: /*
224: * preserve the first character of the new token
225: */
226: sc_token[0] = *sct++;
1.1 deraadt 227:
1.4 millert 228: /*
229: * then see what it is
230: */
231: if (isdigit(sc_token[0])) {
232: while (isdigit(*sct))
233: sc_token[++idx] = *sct++;
234: sc_token[++idx] = 0;
235: return ((sc_tokid = NUMBER));
236: } else if (isalpha(sc_token[0])) {
237: while (isalpha(*sct))
238: sc_token[++idx] = *sct++;
239: sc_token[++idx] = 0;
240: return (parse_token(sc_token));
241: }
242: else if (sc_token[0] == ':' || sc_token[0] == '.')
243: return ((sc_tokid = DOT));
244: else if (sc_token[0] == '+')
245: return ((sc_tokid = PLUS));
246: else if (sc_token[0] == '/')
247: return ((sc_tokid = SLASH));
248: else
249: return ((sc_tokid = JUNK));
1.11 millert 250: }
251: }
1.1 deraadt 252:
253:
254: /*
255: * plonk() gives an appropriate error message if a token is incorrect
256: */
257: static void
1.10 millert 258: plonk(int tok)
1.1 deraadt 259: {
1.13 millert 260: fprintf(stderr, "%s: %s time\n", ProgramName,
261: (tok == EOF) ? "incomplete" : "garbled");
1.11 millert 262: }
1.1 deraadt 263:
264:
1.14 millert 265: /*
1.13 millert 266: * expect() gets a token and returns -1 if it's not the token we want
1.1 deraadt 267: */
1.13 millert 268: static int
1.10 millert 269: expect(int desired)
1.1 deraadt 270: {
1.13 millert 271: if (token() != desired) {
272: plonk(sc_tokid);
273: return (-1);
274: }
275: return (0);
1.11 millert 276: }
1.1 deraadt 277:
278:
279: /*
280: * dateadd() adds a number of minutes to a date. It is extraordinarily
281: * stupid regarding day-of-month overflow, and will most likely not
282: * work properly
283: */
284: static void
1.10 millert 285: dateadd(int minutes, struct tm *tm)
1.1 deraadt 286: {
1.4 millert 287: /* increment days */
1.1 deraadt 288:
1.4 millert 289: while (minutes > 24*60) {
290: minutes -= 24*60;
291: tm->tm_mday++;
1.1 deraadt 292: }
293:
1.4 millert 294: /* increment hours */
295: while (minutes > 60) {
296: minutes -= 60;
297: tm->tm_hour++;
298: if (tm->tm_hour > 23) {
299: tm->tm_mday++;
300: tm->tm_hour = 0;
301: }
302: }
303:
304: /* increment minutes */
305: tm->tm_min += minutes;
1.1 deraadt 306:
1.4 millert 307: if (tm->tm_min > 59) {
308: tm->tm_hour++;
309: tm->tm_min -= 60;
310:
311: if (tm->tm_hour > 23) {
312: tm->tm_mday++;
313: tm->tm_hour = 0;
314: }
1.1 deraadt 315: }
1.11 millert 316: }
1.1 deraadt 317:
318:
319: /*
320: * plus() parses a now + time
321: *
322: * at [NOW] PLUS NUMBER [MINUTES|HOURS|DAYS|WEEKS]
323: *
324: */
1.13 millert 325: static int
1.10 millert 326: plus(struct tm *tm)
1.1 deraadt 327: {
1.4 millert 328: int delay;
329: int expectplur;
330:
1.13 millert 331: if (expect(NUMBER) != 0)
332: return (-1);
1.1 deraadt 333:
1.4 millert 334: delay = atoi(sc_token);
335: expectplur = (delay != 1) ? 1 : 0;
1.1 deraadt 336:
1.4 millert 337: switch (token()) {
338: case WEEKS:
339: delay *= 7;
1.15 cloder 340: /* FALLTHROUGH */
1.4 millert 341: case DAYS:
342: delay *= 24;
1.15 cloder 343: /* FALLTHROUGH */
1.4 millert 344: case HOURS:
345: delay *= 60;
1.15 cloder 346: /* FALLTHROUGH */
1.4 millert 347: case MINUTES:
348: if (expectplur != sc_tokplur)
1.13 millert 349: fprintf(stderr, "%s: pluralization is wrong\n",
350: ProgramName);
1.4 millert 351: dateadd(delay, tm);
1.13 millert 352: return (0);
1.4 millert 353: }
1.1 deraadt 354:
1.4 millert 355: plonk(sc_tokid);
1.13 millert 356: return (-1);
1.11 millert 357: }
1.1 deraadt 358:
359:
360: /*
361: * tod() computes the time of day
362: * [NUMBER [DOT NUMBER] [AM|PM]]
363: */
1.13 millert 364: static int
1.10 millert 365: tod(struct tm *tm)
1.1 deraadt 366: {
1.4 millert 367: int hour, minute = 0;
368: size_t tlen;
369:
370: hour = atoi(sc_token);
371: tlen = strlen(sc_token);
372:
373: /*
374: * first pick out the time of day - if it's 4 digits, we assume
375: * a HHMM time, otherwise it's HH DOT MM time
376: */
377: if (token() == DOT) {
1.13 millert 378: if (expect(NUMBER) != 0)
379: return (-1);
1.4 millert 380: minute = atoi(sc_token);
381: if (minute > 59)
1.13 millert 382: goto bad;
1.4 millert 383: token();
384: } else if (tlen == 4) {
385: minute = hour % 100;
386: if (minute > 59)
1.13 millert 387: goto bad;
1.4 millert 388: hour = hour / 100;
389: }
1.1 deraadt 390:
1.4 millert 391: /*
392: * check if an AM or PM specifier was given
393: */
394: if (sc_tokid == AM || sc_tokid == PM) {
395: if (hour > 12)
1.13 millert 396: goto bad;
1.4 millert 397:
398: if (sc_tokid == PM) {
399: if (hour != 12) /* 12:xx PM is 12:xx, not 24:xx */
400: hour += 12;
401: } else {
402: if (hour == 12) /* 12:xx AM is 00:xx, not 12:xx */
403: hour = 0;
404: }
405: token();
406: } else if (hour > 23)
1.13 millert 407: goto bad;
1.1 deraadt 408:
1.4 millert 409: /*
410: * if we specify an absolute time, we don't want to bump the day even
411: * if we've gone past that time - but if we're specifying a time plus
412: * a relative offset, it's okay to bump things
413: */
414: if ((sc_tokid == EOF || sc_tokid == PLUS) && tm->tm_hour > hour) {
415: tm->tm_mday++;
416: tm->tm_wday++;
417: }
1.1 deraadt 418:
1.4 millert 419: tm->tm_hour = hour;
420: tm->tm_min = minute;
421: if (tm->tm_hour == 24) {
422: tm->tm_hour = 0;
423: tm->tm_mday++;
424: }
1.13 millert 425: return (0);
426: bad:
427: fprintf(stderr, "%s: garbled time\n", ProgramName);
428: return (-1);
1.11 millert 429: }
1.1 deraadt 430:
431:
432: /*
433: * assign_date() assigns a date, wrapping to next year if needed
434: */
435: static void
1.10 millert 436: assign_date(struct tm *tm, int mday, int mon, int year)
1.1 deraadt 437: {
1.9 millert 438:
439: /*
440: * Convert year into tm_year format (year - 1900).
441: * We may be given the year in 2 digit, 4 digit, or tm_year format.
442: */
443: if (year != -1) {
444: if (year >= TM_YEAR_BASE)
445: year -= TM_YEAR_BASE; /* convert from 4 digit year */
446: else if (year < 100) {
447: /* Convert to tm_year assuming current century */
448: year += (tm->tm_year / 100) * 100;
449:
450: if (year == tm->tm_year - 1)
451: year++; /* Common off by one error */
452: else if (year < tm->tm_year)
453: year += 100; /* must be in next century */
454: }
1.4 millert 455: }
456:
457: if (year < 0 &&
458: (tm->tm_mon > mon ||(tm->tm_mon == mon && tm->tm_mday > mday)))
459: year = tm->tm_year + 1;
1.1 deraadt 460:
1.4 millert 461: tm->tm_mday = mday;
462: tm->tm_mon = mon;
1.1 deraadt 463:
1.4 millert 464: if (year >= 0)
465: tm->tm_year = year;
1.11 millert 466: }
1.1 deraadt 467:
468:
1.14 millert 469: /*
1.1 deraadt 470: * month() picks apart a month specification
471: *
472: * /[<month> NUMBER [NUMBER]] \
473: * |[TOMORROW] |
1.4 millert 474: * |[DAY OF WEEK] |
1.1 deraadt 475: * |NUMBER [SLASH NUMBER [SLASH NUMBER]]|
476: * \PLUS NUMBER MINUTES|HOURS|DAYS|WEEKS/
477: */
1.13 millert 478: static int
1.10 millert 479: month(struct tm *tm)
1.1 deraadt 480: {
1.4 millert 481: int year = (-1);
482: int mday, wday, mon;
483: size_t tlen;
484:
485: switch (sc_tokid) {
486: case PLUS:
1.13 millert 487: if (plus(tm) != 0)
488: return (-1);
1.4 millert 489: break;
490:
491: case TOMORROW:
492: /* do something tomorrow */
493: tm->tm_mday++;
494: tm->tm_wday++;
495: case TODAY:
496: /* force ourselves to stay in today - no further processing */
1.1 deraadt 497: token();
1.4 millert 498: break;
1.1 deraadt 499:
1.4 millert 500: case JAN: case FEB: case MAR: case APR: case MAY: case JUN:
501: case JUL: case AUG: case SEP: case OCT: case NOV: case DEC:
502: /*
503: * do month mday [year]
504: */
505: mon = sc_tokid - JAN;
1.13 millert 506: if (expect(NUMBER) != 0)
507: return (-1);
1.4 millert 508: mday = atoi(sc_token);
509: if (token() == NUMBER) {
510: year = atoi(sc_token);
511: token();
1.1 deraadt 512: }
1.4 millert 513: assign_date(tm, mday, mon, year);
514: break;
515:
516: case SUN: case MON: case TUE:
517: case WED: case THU: case FRI:
518: case SAT:
519: /* do a particular day of the week */
520: wday = sc_tokid - SUN;
521:
522: mday = tm->tm_mday;
523:
524: /* if this day is < today, then roll to next week */
525: if (wday < tm->tm_wday)
526: mday += 7 - (tm->tm_wday - wday);
527: else
528: mday += (wday - tm->tm_wday);
529:
530: tm->tm_wday = wday;
531:
532: assign_date(tm, mday, tm->tm_mon, tm->tm_year);
533: break;
1.1 deraadt 534:
1.4 millert 535: case NUMBER:
1.1 deraadt 536: /*
1.4 millert 537: * get numeric MMDDYY, mm/dd/yy, or dd.mm.yy
1.1 deraadt 538: */
1.4 millert 539: tlen = strlen(sc_token);
540: mon = atoi(sc_token);
541: token();
1.1 deraadt 542:
1.4 millert 543: if (sc_tokid == SLASH || sc_tokid == DOT) {
544: int sep;
1.1 deraadt 545:
1.4 millert 546: sep = sc_tokid;
1.13 millert 547: if (expect(NUMBER) != 0)
548: return (-1);
1.4 millert 549: mday = atoi(sc_token);
550: if (token() == sep) {
1.13 millert 551: if (expect(NUMBER) != 0)
552: return (-1);
1.4 millert 553: year = atoi(sc_token);
554: token();
555: }
556:
557: /*
558: * flip months and days for european timing
559: */
560: if (sep == DOT) {
561: int x = mday;
562: mday = mon;
563: mon = x;
564: }
565: } else if (tlen == 6 || tlen == 8) {
566: if (tlen == 8) {
1.8 alex 567: year = (mon % 10000) - TM_YEAR_BASE;
1.4 millert 568: mon /= 10000;
569: } else {
570: year = mon % 100;
571: mon /= 100;
572: }
573: mday = mon % 100;
574: mon /= 100;
575: } else
1.13 millert 576: goto bad;
1.4 millert 577:
578: mon--;
579: if (mon < 0 || mon > 11 || mday < 1 || mday > 31)
1.13 millert 580: goto bad;
1.4 millert 581:
582: assign_date(tm, mday, mon, year);
583: break;
1.13 millert 584: }
585: return (0);
586: bad:
587: fprintf(stderr, "%s: garbled time\n", ProgramName);
588: return (-1);
1.11 millert 589: }
1.1 deraadt 590:
591:
592: time_t
1.10 millert 593: parsetime(int argc, char **argv)
1.1 deraadt 594: {
1.4 millert 595: /*
596: * Do the argument parsing, die if necessary, and return the
597: * time the job should be run.
598: */
599: time_t nowtimer, runtimer;
600: struct tm nowtime, runtime;
601: int hr = 0;
602: /* this MUST be initialized to zero for midnight/noon/teatime */
603:
1.13 millert 604: if (argc == 0)
605: return (-1);
606:
1.4 millert 607: nowtimer = time(NULL);
608: nowtime = *localtime(&nowtimer);
609:
610: runtime = nowtime;
611: runtime.tm_sec = 0;
612: runtime.tm_isdst = 0;
613:
1.13 millert 614: if (init_scanner(argc, argv) == -1)
615: return (-1);
1.4 millert 616:
617: switch (token()) {
618: case NOW: /* now is optional prefix for PLUS tree */
1.5 millert 619: token();
620: if (sc_tokid == EOF) {
621: runtime = nowtime;
622: break;
623: }
624: else if (sc_tokid != PLUS)
625: plonk(sc_tokid);
1.4 millert 626: case PLUS:
1.13 millert 627: if (plus(&runtime) != 0)
628: return (-1);
1.4 millert 629: break;
630:
631: case NUMBER:
1.13 millert 632: if (tod(&runtime) != 0 || month(&runtime) != 0)
633: return (-1);
1.4 millert 634: break;
635:
636: /*
637: * evil coding for TEATIME|NOON|MIDNIGHT - we've initialised
638: * hr to zero up above, then fall into this case in such a
639: * way so we add +12 +4 hours to it for teatime, +12 hours
640: * to it for noon, and nothing at all for midnight, then
641: * set our runtime to that hour before leaping into the
642: * month scanner
643: */
644: case TEATIME:
645: hr += 4;
1.15 cloder 646: /* FALLTHROUGH */
1.4 millert 647: case NOON:
648: hr += 12;
1.15 cloder 649: /* FALLTHROUGH */
1.4 millert 650: case MIDNIGHT:
651: if (runtime.tm_hour >= hr) {
652: runtime.tm_mday++;
653: runtime.tm_wday++;
654: }
655: runtime.tm_hour = hr;
656: runtime.tm_min = 0;
657: token();
658: /* fall through to month setting */
1.15 cloder 659: /* FALLTHROUGH */
1.4 millert 660: default:
1.13 millert 661: if (month(&runtime) != 0)
662: return (-1);
1.4 millert 663: break;
664: } /* ugly case statement */
1.13 millert 665: if (expect(EOF) != 0)
666: return (-1);
1.4 millert 667:
668: /*
669: * adjust for daylight savings time
670: */
671: runtime.tm_isdst = -1;
1.1 deraadt 672: runtimer = mktime(&runtime);
1.4 millert 673: if (runtime.tm_isdst > 0) {
674: runtimer -= 3600;
675: runtimer = mktime(&runtime);
676: }
1.1 deraadt 677:
1.13 millert 678: if (runtimer < 0) {
679: fprintf(stderr, "%s: garbled time\n", ProgramName);
680: return (-1);
681: }
1.1 deraadt 682:
1.13 millert 683: if (nowtimer > runtimer) {
1.16 millert 684: fprintf(stderr, "%s: cannot schedule jobs in the past\n",
1.13 millert 685: ProgramName);
686: return (-1);
687: }
1.1 deraadt 688:
1.4 millert 689: return (runtimer);
1.11 millert 690: }
![[BACK]](/icons/back.gif){kind=icon}
Return to parsetime.c CVS log ![[TXT]](/icons/text.gif){kind=icon}
![[DIR]](/icons/dir.gif){kind=icon}
Up to [local] / src / usr.bin / at