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8322 nl: misleading-indentation
[unleashed/tickless.git] / usr / src / cmd / backup / lib / getdate.y
blob054b5f9589e3dffa40f116e017c554f245f8f5c2
1 %{
2 /*
3 * Copyright 2005 Sun Microsystems, Inc. All rights reserved.
4 * Use is subject to license terms.
5 */
6 #pragma ident "%Z%%M% %I% %E% SMI"
7
8 /* $OrigRevision: 2.1 $
9 **
10 ** Originally written by Steven M. Bellovin <smb@research.att.com> while
11 ** at the University of North Carolina at Chapel Hill. Later tweaked by
12 ** a couple of people on Usenet. Completely overhauled by Rich $alz
13 ** <rsalz@bbn.com> and Jim Berets <jberets@bbn.com> in August, 1990;
14 ** send any email to Rich.
15 **
16 ** This grammar has eight shift/reduce conflicts.
17 **
18 ** This code is in the public domain and has no copyright.
19 */
20 /* SUPPRESS 287 on yaccpar_sccsid *//* Unusd static variable */
21 /* SUPPRESS 288 on yyerrlab *//* Label unused */
22 #include <stdio.h>
23 #include <ctype.h>
24
25 #include <sys/types.h>
26 #define NEED_TZSET
27 struct timeb {
28 time_t time; /* Seconds since the epoch */
29 unsigned short millitm; /* Field not used */
30 short timezone;
31 short dstflag; /* Field not used */
32 };
33 #include <time.h>
34
35 #include <locale.h>
36 #include <string.h>
37 #include <stdlib.h>
38 #include <note.h>
39 #include <libintl.h>
40
41 #if !defined(lint) && !defined(SABER)
42 static char RCS[] =
43 "$Header: /home/laramie/berliner/ws/backup/usr/src/cmd/backup/lib/getdate.y,v 1.5 1992/06/09 21:46:21 sam Exp $";
44 #endif /* !defined(lint) && !defined(SABER) */
45
46
47 #define EPOCH 1970
48 #define HOURN(x) (x * 60)
49 #define SECSPERDAY (24L * 60L * 60L)
50
51 #define CHECK_TM(y) (((y) % 100) < 70 ? (y) + 2000 : (y) + 1900)
52
53 /*
54 ** An entry in the lexical lookup table.
55 */
56 typedef struct _TABLE {
57 char *name;
58 int type;
59 time_t value;
60 } TABLE;
61
62
63 /*
64 ** Daylight-savings mode: on, off, or not yet known.
65 */
66 typedef enum _DSTMODE {
67 DSTon, DSToff, DSTmaybe
68 } DSTMODE;
69
70 /*
71 ** Meridian: am, pm, or 24-hour style.
72 */
73 typedef enum _MERIDIAN {
74 MERam, MERpm, MER24
75 } MERIDIAN;
76
77
78 /*
79 ** Global variables. We could get rid of most of these by using a good
80 ** union as the yacc stack. (This routine was originally written before
81 ** yacc had the %union construct.) Maybe someday; right now we only use
82 ** the %union very rarely.
83 */
84 static char *yyInput;
85 static DSTMODE yyDSTmode;
86 static time_t yyDayOrdinal;
87 static time_t yyDayNumber;
88 static int yyHaveDate;
89 static int yyHaveDay;
90 static int yyHaveRel;
91 static int yyHaveTime;
92 static int yyHaveZone;
93 static time_t yyTimezone;
94 static time_t yyDay;
95 static time_t yyHour;
96 static time_t yyMinutes;
97 static time_t yyMonth;
98 static time_t yySeconds;
99 static time_t yyYear;
100 static MERIDIAN yyMeridian;
101 static time_t yyRelMonth;
102 static time_t yyRelSeconds;
103
104 static char *domainname = "hsm_libdump"; /* for dgettext() */
105
106 #define yylex 1 /* suppress yacc's definition */
107 %}
108
109 %union {
110 time_t Number;
111 enum _MERIDIAN Meridian;
112 }
113
114 %token tAGO tDAY tDAYZONE tID tMERIDIAN tMINUTE_UNIT tMONTH tMONTH_UNIT
115 %token tSEC_UNIT tSNUMBER tUNUMBER tZONE
116
117 %type <Number> tDAY tDAYZONE tMINUTE_UNIT tMONTH tMONTH_UNIT
118 %type <Number> tSEC_UNIT tSNUMBER tUNUMBER tZONE
119 %type <Meridian> tMERIDIAN o_merid
120
121 %%
122
123 spec : /* NULL */
124 | spec item
125 ;
126
127 item : time {
128 yyHaveTime++;
129 }
130 | zone {
131 yyHaveZone++;
132 }
133 | date {
134 yyHaveDate++;
135 }
136 | day {
137 yyHaveDay++;
138 }
139 | rel {
140 yyHaveRel++;
141 }
142 | number
143 ;
144
145 time : tUNUMBER tMERIDIAN {
146 yyHour = $1;
147 yyMinutes = 0;
148 yySeconds = 0;
149 yyMeridian = $2;
150 }
151 | tUNUMBER ':' tUNUMBER o_merid {
152 yyHour = $1;
153 yyMinutes = $3;
154 yySeconds = 0;
155 yyMeridian = $4;
156 }
157 | tUNUMBER ':' tUNUMBER tSNUMBER {
158 yyHour = $1;
159 yyMinutes = $3;
160 yyMeridian = MER24;
161 yyDSTmode = DSToff;
162 yyTimezone = - ($4 % 100 + ($4 / 100) * 60);
163 }
164 | tUNUMBER ':' tUNUMBER ':' tUNUMBER o_merid {
165 yyHour = $1;
166 yyMinutes = $3;
167 yySeconds = $5;
168 yyMeridian = $6;
169 }
170 | tUNUMBER ':' tUNUMBER ':' tUNUMBER tSNUMBER {
171 yyHour = $1;
172 yyMinutes = $3;
173 yySeconds = $5;
174 yyMeridian = MER24;
175 yyDSTmode = DSToff;
176 yyTimezone = - ($6 % 100 + ($6 / 100) * 60);
177 }
178 ;
179
180 zone : tZONE {
181 yyTimezone = $1;
182 yyDSTmode = DSToff;
183 }
184 | tDAYZONE {
185 yyTimezone = $1;
186 yyDSTmode = DSTon;
187 }
188 ;
189
190 day : tDAY {
191 yyDayOrdinal = 1;
192 yyDayNumber = $1;
193 }
194 | tDAY ',' {
195 yyDayOrdinal = 1;
196 yyDayNumber = $1;
197 }
198 | tUNUMBER tDAY {
199 yyDayOrdinal = $1;
200 yyDayNumber = $2;
201 }
202 ;
203
204 date : tUNUMBER '/' tUNUMBER {
205 yyMonth = $1;
206 yyDay = $3;
207 }
208 | tUNUMBER '/' tUNUMBER '/' tUNUMBER {
209 yyMonth = $1;
210 yyDay = $3;
211 yyYear = $5;
212 }
213 | tMONTH tUNUMBER {
214 yyMonth = $1;
215 yyDay = $2;
216 }
217 | tMONTH tUNUMBER ',' tUNUMBER {
218 yyMonth = $1;
219 yyDay = $2;
220 yyYear = $4;
221 }
222 | tUNUMBER tMONTH {
223 yyMonth = $2;
224 yyDay = $1;
225 }
226 | tUNUMBER tMONTH tUNUMBER {
227 yyMonth = $2;
228 yyDay = $1;
229 yyYear = $3;
230 }
231 ;
232
233 rel : relunit tAGO {
234 yyRelSeconds = -yyRelSeconds;
235 yyRelMonth = -yyRelMonth;
236 }
237 | relunit
238 ;
239
240 relunit : tUNUMBER tMINUTE_UNIT {
241 yyRelSeconds += $1 * $2 * 60L;
242 }
243 | tSNUMBER tMINUTE_UNIT {
244 yyRelSeconds += $1 * $2 * 60L;
245 }
246 | tMINUTE_UNIT {
247 yyRelSeconds += $1 * 60L;
248 }
249 | tSNUMBER tSEC_UNIT {
250 yyRelSeconds += $1;
251 }
252 | tUNUMBER tSEC_UNIT {
253 yyRelSeconds += $1;
254 }
255 | tSEC_UNIT {
256 yyRelSeconds++;
257 }
258 | tSNUMBER tMONTH_UNIT {
259 yyRelMonth += $1 * $2;
260 }
261 | tUNUMBER tMONTH_UNIT {
262 yyRelMonth += $1 * $2;
263 }
264 | tMONTH_UNIT {
265 yyRelMonth += $1;
266 }
267 ;
268
269 number : tUNUMBER {
270 if (yyHaveTime && yyHaveDate && !yyHaveRel)
271 yyYear = $1;
272 else {
273 yyHaveTime++;
274 if ($1 < 100) {
275 yyHour = $1;
276 yyMinutes = 0;
277 }
278 else {
279 yyHour = $1 / 100;
280 yyMinutes = $1 % 100;
281 }
282 yySeconds = 0;
283 yyMeridian = MER24;
284 }
285 }
286 ;
287
288 o_merid : /* NULL */ {
289 $$ = MER24;
290 }
291 | tMERIDIAN {
292 $$ = $1;
293 }
294 ;
295
296 %%
297
298 /* Month and day table. */
299 static TABLE MonthDayTable[] = {
300 { "january", tMONTH, 1 },
301 { "february", tMONTH, 2 },
302 { "march", tMONTH, 3 },
303 { "april", tMONTH, 4 },
304 { "may", tMONTH, 5 },
305 { "june", tMONTH, 6 },
306 { "july", tMONTH, 7 },
307 { "august", tMONTH, 8 },
308 { "september", tMONTH, 9 },
309 { "sept", tMONTH, 9 },
310 { "october", tMONTH, 10 },
311 { "november", tMONTH, 11 },
312 { "december", tMONTH, 12 },
313 { "sunday", tDAY, 0 },
314 { "monday", tDAY, 1 },
315 { "tuesday", tDAY, 2 },
316 { "tues", tDAY, 2 },
317 { "wednesday", tDAY, 3 },
318 { "wednes", tDAY, 3 },
319 { "thursday", tDAY, 4 },
320 { "thur", tDAY, 4 },
321 { "thurs", tDAY, 4 },
322 { "friday", tDAY, 5 },
323 { "saturday", tDAY, 6 },
324 { NULL }
325 };
326
327 /* Time units table. */
328 static TABLE UnitsTable[] = {
329 { "year", tMONTH_UNIT, 12 },
330 { "month", tMONTH_UNIT, 1 },
331 { "fortnight", tMINUTE_UNIT, 14 * 24 * 60 },
332 { "week", tMINUTE_UNIT, 7 * 24 * 60 },
333 { "day", tMINUTE_UNIT, 1 * 24 * 60 },
334 { "hour", tMINUTE_UNIT, 60 },
335 { "minute", tMINUTE_UNIT, 1 },
336 { "min", tMINUTE_UNIT, 1 },
337 { "second", tSEC_UNIT, 1 },
338 { "sec", tSEC_UNIT, 1 },
339 { NULL }
340 };
341
342 /* Assorted relative-time words. */
343 static TABLE OtherTable[] = {
344 { "tomorrow", tMINUTE_UNIT, 1 * 24 * 60 },
345 { "yesterday", tMINUTE_UNIT, -1 * 24 * 60 },
346 { "today", tMINUTE_UNIT, 0 },
347 { "now", tMINUTE_UNIT, 0 },
348 { "last", tUNUMBER, -1 },
349 { "this", tMINUTE_UNIT, 0 },
350 { "next", tUNUMBER, 2 },
351 { "first", tUNUMBER, 1 },
352 /* { "second", tUNUMBER, 2 }, */
353 { "third", tUNUMBER, 3 },
354 { "fourth", tUNUMBER, 4 },
355 { "fifth", tUNUMBER, 5 },
356 { "sixth", tUNUMBER, 6 },
357 { "seventh", tUNUMBER, 7 },
358 { "eighth", tUNUMBER, 8 },
359 { "ninth", tUNUMBER, 9 },
360 { "tenth", tUNUMBER, 10 },
361 { "eleventh", tUNUMBER, 11 },
362 { "twelfth", tUNUMBER, 12 },
363 { "ago", tAGO, 1 },
364 { NULL }
365 };
366
367 /* The timezone table. */
368 static TABLE TimezoneTable[] = {
369 { "gmt", tZONE, HOURN( 0) }, /* Greenwich Mean */
370 { "ut", tZONE, HOURN( 0) }, /* Universal (Coordinated) */
371 { "utc", tZONE, HOURN( 0) },
372 { "wet", tZONE, HOURN( 0) }, /* Western European */
373 { "bst", tDAYZONE, HOURN( 0) }, /* British Summer */
374 { "wat", tZONE, HOURN( 1) }, /* West Africa */
375 { "at", tZONE, HOURN( 2) }, /* Azores */
376 #if 0
377 /* For completeness. BST is also British Summer, and GST is
378 * also Guam Standard. */
379 { "bst", tZONE, HOURN( 3) }, /* Brazil Standard */
380 { "gst", tZONE, HOURN( 3) }, /* Greenland Standard */
381 #endif
382 { "nft", tZONE, HOURN(3.5) }, /* Newfoundland */
383 { "nst", tZONE, HOURN(3.5) }, /* Newfoundland Standard */
384 { "ndt", tDAYZONE, HOURN(3.5) }, /* Newfoundland Daylight */
385 { "ast", tZONE, HOURN( 4) }, /* Atlantic Standard */
386 { "adt", tDAYZONE, HOURN( 4) }, /* Atlantic Daylight */
387 { "est", tZONE, HOURN( 5) }, /* Eastern Standard */
388 { "edt", tDAYZONE, HOURN( 5) }, /* Eastern Daylight */
389 { "cst", tZONE, HOURN( 6) }, /* Central Standard */
390 { "cdt", tDAYZONE, HOURN( 6) }, /* Central Daylight */
391 { "mst", tZONE, HOURN( 7) }, /* Mountain Standard */
392 { "mdt", tDAYZONE, HOURN( 7) }, /* Mountain Daylight */
393 { "pst", tZONE, HOURN( 8) }, /* Pacific Standard */
394 { "pdt", tDAYZONE, HOURN( 8) }, /* Pacific Daylight */
395 { "yst", tZONE, HOURN( 9) }, /* Yukon Standard */
396 { "ydt", tDAYZONE, HOURN( 9) }, /* Yukon Daylight */
397 { "hst", tZONE, HOURN(10) }, /* Hawaii Standard */
398 { "hdt", tDAYZONE, HOURN(10) }, /* Hawaii Daylight */
399 { "cat", tZONE, HOURN(10) }, /* Central Alaska */
400 { "ahst", tZONE, HOURN(10) }, /* Alaska-Hawaii Standard */
401 { "nt", tZONE, HOURN(11) }, /* Nome */
402 { "idlw", tZONE, HOURN(12) }, /* International Date Line West */
403 { "cet", tZONE, -HOURN(1) }, /* Central European */
404 { "met", tZONE, -HOURN(1) }, /* Middle European */
405 { "mewt", tZONE, -HOURN(1) }, /* Middle European Winter */
406 { "mest", tDAYZONE, -HOURN(1) }, /* Middle European Summer */
407 { "swt", tZONE, -HOURN(1) }, /* Swedish Winter */
408 { "sst", tDAYZONE, -HOURN(1) }, /* Swedish Summer */
409 { "fwt", tZONE, -HOURN(1) }, /* French Winter */
410 { "fst", tDAYZONE, -HOURN(1) }, /* French Summer */
411 { "eet", tZONE, -HOURN(2) }, /* Eastern Europe, USSR Zone 1 */
412 { "bt", tZONE, -HOURN(3) }, /* Baghdad, USSR Zone 2 */
413 { "it", tZONE, -HOURN(3.5) },/* Iran */
414 { "zp4", tZONE, -HOURN(4) }, /* USSR Zone 3 */
415 { "zp5", tZONE, -HOURN(5) }, /* USSR Zone 4 */
416 { "ist", tZONE, -HOURN(5.5) },/* Indian Standard */
417 { "zp6", tZONE, -HOURN(6) }, /* USSR Zone 5 */
418 #if 0
419 /* For completeness. NST is also Newfoundland Stanard, nad SST is
420 * also Swedish Summer. */
421 { "nst", tZONE, -HOURN(6.5) },/* North Sumatra */
422 { "sst", tZONE, -HOURN(7) }, /* South Sumatra, USSR Zone 6 */
423 #endif /* 0 */
424 { "wast", tZONE, -HOURN(7) }, /* West Australian Standard */
425 { "wadt", tDAYZONE, -HOURN(7) }, /* West Australian Daylight */
426 { "jt", tZONE, -HOURN(7.5) },/* Java (3pm in Cronusland!) */
427 { "cct", tZONE, -HOURN(8) }, /* China Coast, USSR Zone 7 */
428 { "jst", tZONE, -HOURN(9) }, /* Japan Standard, USSR Zone 8 */
429 { "cast", tZONE, -HOURN(9.5) },/* Central Australian Standard */
430 { "cadt", tDAYZONE, -HOURN(9.5) },/* Central Australian Daylight */
431 { "east", tZONE, -HOURN(10) }, /* Eastern Australian Standard */
432 { "eadt", tDAYZONE, -HOURN(10) }, /* Eastern Australian Daylight */
433 { "gst", tZONE, -HOURN(10) }, /* Guam Standard, USSR Zone 9 */
434 { "nzt", tZONE, -HOURN(12) }, /* New Zealand */
435 { "nzst", tZONE, -HOURN(12) }, /* New Zealand Standard */
436 { "nzdt", tDAYZONE, -HOURN(12) }, /* New Zealand Daylight */
437 { "idle", tZONE, -HOURN(12) }, /* International Date Line East */
438 { NULL }
439 };
440
441 /* Military timezone table. */
442 static TABLE MilitaryTable[] = {
443 { "a", tZONE, HOURN( 1) },
444 { "b", tZONE, HOURN( 2) },
445 { "c", tZONE, HOURN( 3) },
446 { "d", tZONE, HOURN( 4) },
447 { "e", tZONE, HOURN( 5) },
448 { "f", tZONE, HOURN( 6) },
449 { "g", tZONE, HOURN( 7) },
450 { "h", tZONE, HOURN( 8) },
451 { "i", tZONE, HOURN( 9) },
452 { "k", tZONE, HOURN( 10) },
453 { "l", tZONE, HOURN( 11) },
454 { "m", tZONE, HOURN( 12) },
455 { "n", tZONE, HOURN(- 1) },
456 { "o", tZONE, HOURN(- 2) },
457 { "p", tZONE, HOURN(- 3) },
458 { "q", tZONE, HOURN(- 4) },
459 { "r", tZONE, HOURN(- 5) },
460 { "s", tZONE, HOURN(- 6) },
461 { "t", tZONE, HOURN(- 7) },
462 { "u", tZONE, HOURN(- 8) },
463 { "v", tZONE, HOURN(- 9) },
464 { "w", tZONE, HOURN(-10) },
465 { "x", tZONE, HOURN(-11) },
466 { "y", tZONE, HOURN(-12) },
467 { "z", tZONE, HOURN( 0) },
468 { NULL }
469 };
470
471 \f
472
473
474 /* ARGSUSED */
475 static void
476 yyerror(s)
477 char *s;
478 {
479 }
480
481
482 static time_t
483 ToSeconds(Hours, Minutes, Seconds, Meridian)
484 time_t Hours;
485 time_t Minutes;
486 time_t Seconds;
487 MERIDIAN Meridian;
488 {
489 if (Minutes < 0 || Minutes > 59 || Seconds < 0 || Seconds > 59)
490 return -1;
491 switch (Meridian) {
492 case MER24:
493 if (Hours < 0 || Hours > 23)
494 return -1;
495 return (Hours * 60L + Minutes) * 60L + Seconds;
496 case MERam:
497 if (Hours < 1 || Hours > 12)
498 return -1;
499 if (Hours != 12)
500 return (Hours * 60L + Minutes) * 60L + Seconds;
501 else
502 return Minutes * 60L + Seconds;
503 case MERpm:
504 if (Hours < 1 || Hours > 12)
505 return -1;
506 if (Hours != 12)
507 return ((Hours + 12) * 60L + Minutes) * 60L + Seconds;
508 else
509 return (720L + Minutes) * 60L + Seconds;
510 }
511 /* NOTREACHED */
512 return (-1);
513 }
514
515
516 static time_t
517 Convert(Month, Day, Year, Hours, Minutes, Seconds, Meridian, DSTmode)
518 time_t Month;
519 time_t Day;
520 time_t Year;
521 time_t Hours;
522 time_t Minutes;
523 time_t Seconds;
524 MERIDIAN Meridian;
525 DSTMODE DSTmode;
526 {
527 static int DaysInMonth[12] = {
528 31, 0, 31, 30, 31, 30, 31, 31, 30, 31, 30, 31
529 };
530 time_t tod;
531 time_t Julian;
532 time_t i;
533
534 if (Year < 0)
535 Year = -Year;
536 if (Year < 138)
537 Year += 1900;
538 DaysInMonth[1] = Year % 4 == 0 && (Year % 100 != 0 || Year % 400 == 0)
539 ? 29 : 28;
540 if (Year < EPOCH || Year > 2037
541 || Month < 1 || Month > 12
542 /* LINTED Month is a time_t so intermediate results aren't truncated */
543 || Day < 1 || Day > DaysInMonth[(int)--Month])
544 return -1;
545
546 for (Julian = Day - 1, i = 0; i < Month; i++)
547 Julian += DaysInMonth[i];
548 for (i = EPOCH; i < Year; i++)
549 Julian += 365 + (i % 4 == 0);
550 Julian *= SECSPERDAY;
551 Julian += yyTimezone * 60L;
552 if ((tod = ToSeconds(Hours, Minutes, Seconds, Meridian)) < 0)
553 return -1;
554 Julian += tod;
555 if (DSTmode == DSTon
556 || (DSTmode == DSTmaybe && localtime(&Julian)->tm_isdst))
557 Julian -= 60 * 60;
558 return Julian;
559 }
560
561
562 static time_t
563 DSTcorrect(Start, Future)
564 time_t Start;
565 time_t Future;
566 {
567 time_t StartDay;
568 time_t FutureDay;
569
570 StartDay = (localtime(&Start)->tm_hour + 1) % 24;
571 FutureDay = (localtime(&Future)->tm_hour + 1) % 24;
572 return (Future - Start) + (StartDay - FutureDay) * 60L * 60L;
573 }
574
575
576 static time_t
577 RelativeDate(Start, DayOrdinal, DayNumber)
578 time_t Start;
579 time_t DayOrdinal;
580 time_t DayNumber;
581 {
582 struct tm *tm;
583 time_t now;
584
585 now = Start;
586 tm = localtime(&now);
587 now += SECSPERDAY * ((DayNumber - tm->tm_wday + 7) % 7);
588 now += 7 * SECSPERDAY * (DayOrdinal <= 0 ? DayOrdinal : DayOrdinal - 1);
589 return DSTcorrect(Start, now);
590 }
591
592
593 static time_t
594 RelativeMonth(Start, RelMonth)
595 time_t Start;
596 time_t RelMonth;
597 {
598 struct tm *tm;
599 time_t Month;
600 time_t Year;
601
602 if (RelMonth == 0)
603 return 0;
604 tm = localtime(&Start);
605 Month = 12 * tm->tm_year + tm->tm_mon + RelMonth;
606 Year = Month / 12;
607 Month = Month % 12 + 1;
608 return DSTcorrect(Start,
609 Convert(Month, (time_t)tm->tm_mday, Year,
610 (time_t)tm->tm_hour, (time_t)tm->tm_min, (time_t)tm->tm_sec,
611 MER24, DSTmaybe));
612 }
613
614
615 static int
616 LookupWord(buff)
617 char *buff;
618 {
619 char *p;
620 char *q;
621 TABLE *tp;
622 uint_t i;
623 int abbrev;
624
625 /* Make it lowercase. */
626 for (p = buff; *p; p++)
627 if (isupper((u_char)*p))
628 *p = tolower(*p);
629
630 if (strcmp(buff, "am") == 0 || strcmp(buff, "a.m.") == 0) {
631 yylval.Meridian = MERam;
632 return tMERIDIAN;
633 }
634 if (strcmp(buff, "pm") == 0 || strcmp(buff, "p.m.") == 0) {
635 yylval.Meridian = MERpm;
636 return tMERIDIAN;
637 }
638
639 /* See if we have an abbreviation for a month. */
640 if (strlen(buff) == 3)
641 abbrev = 1;
642 else if (strlen(buff) == 4 && buff[3] == '.') {
643 abbrev = 1;
644 buff[3] = '\0';
645 }
646 else
647 abbrev = 0;
648
649 for (tp = MonthDayTable; tp->name; tp++) {
650 if (abbrev) {
651 if (strncmp(buff, tp->name, 3) == 0) {
652 yylval.Number = tp->value;
653 return tp->type;
654 }
655 }
656 else if (strcmp(buff, tp->name) == 0) {
657 yylval.Number = tp->value;
658 return tp->type;
659 }
660 }
661
662 for (tp = TimezoneTable; tp->name; tp++)
663 if (strcmp(buff, tp->name) == 0) {
664 yylval.Number = tp->value;
665 return tp->type;
666 }
667
668 for (tp = UnitsTable; tp->name; tp++)
669 if (strcmp(buff, tp->name) == 0) {
670 yylval.Number = tp->value;
671 return tp->type;
672 }
673
674 /* Strip off any plural and try the units table again. */
675 i = strlen(buff) - 1;
676 if (buff[i] == 's') {
677 buff[i] = '\0';
678 for (tp = UnitsTable; tp->name; tp++)
679 if (strcmp(buff, tp->name) == 0) {
680 yylval.Number = tp->value;
681 return tp->type;
682 }
683 }
684
685 for (tp = OtherTable; tp->name; tp++)
686 if (strcmp(buff, tp->name) == 0) {
687 yylval.Number = tp->value;
688 return tp->type;
689 }
690
691 /* Military timezones. */
692 if (buff[1] == '\0' && isalpha((u_char)*buff)) {
693 for (tp = MilitaryTable; tp->name; tp++)
694 if (strcmp(buff, tp->name) == 0) {
695 yylval.Number = tp->value;
696 return tp->type;
697 }
698 }
699
700 /* Drop out any periods and try the timezone table again. */
701 for (i = 0, p = q = buff; *q; q++)
702 if (*q != '.')
703 *p++ = *q;
704 else
705 i++;
706 *p = '\0';
707 if (i)
708 for (tp = TimezoneTable; tp->name; tp++)
709 if (strcmp(buff, tp->name) == 0) {
710 yylval.Number = tp->value;
711 return tp->type;
712 }
713
714 return tID;
715 }
716
717 void
718 pdateerr(p)
719 char *p;
720 {
721 char *name = "DATEMSK"; /* env variable for date format */
722 char *value;
723 char fmt[256], line[256];
724 FILE *fp;
725 time_t now;
726 struct tm *tm;
727
728 value = getenv(name);
729 if (value == (char *)0) {
730 fprintf(stderr,
731 dgettext(domainname, "%s: Environment variable %s not set\n"),
732 p, name);
733 return;
734 }
735 switch (getdate_err) {
736 case 0:
737 default:
738 fprintf(stderr,
739 dgettext(domainname, "%s: Unkown getdate() error\n"), p);
740 break;
741 case 1:
742 fprintf(stderr,
743 dgettext(domainname, "%s: %s null or undefined\n"), p, name);
744 break;
745 case 2:
746 fprintf(stderr, dgettext(domainname,
747 "%s: Cannot read template file %s\n"), p, value);
748 break;
749 case 3:
750 fprintf(stderr, dgettext(domainname,
751 "%s: Failed to get file status information\n"), p);
752 break;
753 case 4:
754 fprintf(stderr, dgettext(domainname,
755 "%s: Template file %s not a regular file\n"), p, value);
756 break;
757 case 5:
758 fprintf(stderr, dgettext(domainname,
759 "%s: Error reading template file %s\n"), p, value);
760 break;
761 case 6:
762 fprintf(stderr, dgettext(domainname,
763 "%s: %s failed\n"), p, "malloc()");
764 break;
765 case 7:
766 fprintf(stderr, dgettext(domainname,
767 "%s: Bad date/time format\n"), p);
768 fp = fopen(value, "r");
769 if (fp == (FILE *)0)
770 break;
771 now = time((time_t *)0);
772 tm = localtime(&now);
773 fprintf(stderr, dgettext(domainname,
774 "The following are examples of valid formats:\n"));
775 while (fgets(fmt, sizeof (fmt), fp)) {
776 if (strchr(fmt, '%') == (char *)0)
777 continue;
778 fprintf(stderr, " ");
779 (void) strftime(line, sizeof (line), fmt, tm);
780 fprintf(stderr, "%s", line);
781 }
782 (void) fclose(fp);
783 break;
784 case 8:
785 (void) fprintf(stderr, dgettext(domainname,
786 "%s: Invalid date specification\n"), p);
787 break;
788 }
789 }
790
791 #undef yylex
792 static int
793 yylex()
794 {
795 char c;
796 char *p;
797 char buff[20];
798 int Count;
799 int sign;
800
801 for ( ; ; ) {
802 while (isspace((u_char)*yyInput))
803 yyInput++;
804
805 if (isdigit((u_char)(c = *yyInput)) || c == '-' || c == '+') {
806 if (c == '-' || c == '+') {
807 sign = c == '-' ? -1 : 1;
808 if (!isdigit((u_char)*++yyInput))
809 /* skip the '-' sign */
810 continue;
811 }
812 else
813 sign = 0;
814 yylval.Number = 0;
815 while (isdigit((u_char)(c = *yyInput++))) {
816 int n;
817 char digit = c;
818 (void) sscanf(&digit, "%1d", &n);
819 yylval.Number = 10 * yylval.Number + n;
820 }
821 yyInput--;
822 if (sign < 0)
823 yylval.Number = -yylval.Number;
824 return sign ? tSNUMBER : tUNUMBER;
825 }
826 if (isalpha((u_char)c)) {
827 for (p = buff; isalpha((u_char)(c = *yyInput++)) || c == '.'; )
828 if (p < &buff[sizeof (buff) - 1])
829 *p++ = c;
830 *p = '\0';
831 yyInput--;
832 return LookupWord(buff);
833 }
834 if (c != '(')
835 return *yyInput++;
836 Count = 0;
837 do {
838 c = *yyInput++;
839 if (c == '\0')
840 return c;
841 if (c == '(')
842 Count++;
843 else if (c == ')')
844 Count--;
845 } while (Count > 0);
846 }
847 }
848
849
850 time_t
851 getreldate(p, now)
852 char *p;
853 struct timeb *now;
854 {
855 struct tm *tm;
856 struct timeb ftz;
857 time_t Start;
858 time_t tod;
859
860 if (strcmp(setlocale(LC_TIME, NULL), "C")) {
861 static char localedate[24];
862 struct tm ltm;
863
864 tm = getdate(p);
865 if (getdate_err == 1 /* NODATEMASK */) {
866 char buffy[BUFSIZ];
867 time_t current;
868
869 printf(gettext("environment variable %s not set\n"), "DATEMSK");
870 do {
871 time(&current);
872 tm = localtime(&current);
873 memcpy(&ltm, tm, sizeof(ltm));
874 tm = &ltm;
875
876 (void) fputs(gettext("Enter date as mmddhhmm[yy]: "), stdout);
877 (void) fflush(stdout);
878 if (fgets(buffy, sizeof (buffy), stdin) == NULL) {
879 (void) printf(gettext("Encountered EOF on stdin\n"));
880 return(-1);
881 }
882 } while (sscanf(buffy, "%2d%2d%2d%2d%2d",
883 &(tm->tm_mon), &(tm->tm_mday), &(tm->tm_hour),
884 &(tm->tm_min), &(tm->tm_year)) < 4);
885
886 (tm->tm_mon)--;
887 } else if (tm == NULL)
888 return(-1);
889
890 (void)sprintf(localedate, "%d:%2.2d %d/%d %d",
891 tm->tm_hour, tm->tm_min, tm->tm_mon + 1,
892 tm->tm_mday, CHECK_TM(tm->tm_year));
893 p = localedate;
894 }
895
896 yyInput = p;
897 if (now == NULL) {
898 now = &ftz;
899 (void) time(&ftz.time);
900 /* Set the timezone global. */
901 tzset();
902 /* LINTED timezone is time_t so intermediate results aren't truncated */
903 ftz.timezone = (int) timezone / 60;
904 }
905
906 tm = localtime(&now->time);
907 yyYear = tm->tm_year;
908 yyMonth = tm->tm_mon + 1;
909 yyDay = tm->tm_mday;
910 yyTimezone = now->timezone;
911 yyDSTmode = DSTmaybe;
912 yyHour = tm->tm_hour;
913 yyMinutes = tm->tm_min;
914 yySeconds = tm->tm_sec;
915 yyMeridian = MER24;
916 yyRelSeconds = 0;
917 yyRelMonth = 0;
918 yyHaveDate = 0;
919 yyHaveDay = 0;
920 yyHaveRel = 0;
921 yyHaveTime = 0;
922 yyHaveZone = 0;
923
924 if (yyparse()
925 || yyHaveTime > 1 || yyHaveZone > 1 || yyHaveDate > 1 || yyHaveDay > 1)
926 return -1;
927
928 if (yyHaveDate || yyHaveTime || yyHaveDay) {
929 Start = Convert(yyMonth, yyDay, yyYear, yyHour, yyMinutes, yySeconds,
930 yyMeridian, yyDSTmode);
931 if (Start < 0)
932 return -1;
933 }
934 else {
935 Start = now->time;
936 if (!yyHaveRel)
937 Start -= ((tm->tm_hour * 60L) + tm->tm_min * 60L) + tm->tm_sec;
938 }
939
940 Start += yyRelSeconds;
941 Start += RelativeMonth(Start, yyRelMonth);
942
943 if (yyHaveDay && !yyHaveDate) {
944 tod = RelativeDate(Start, yyDayOrdinal, yyDayNumber);
945 Start += tod;
946 }
947
948 /* Have to do *something* with a legitimate -1 so it's distinguishable
949 * from the error return value. (Alternately could set errno on error.) */
950 return Start == -1 ? 0 : Start;
951 }
952
953 #if defined(TEST)
954
955 /* ARGSUSED */
956 main(ac, av)
957 int ac;
958 char *av[];
959 {
960 char buff[128];
961 time_t d;
962
963 (void) setlocale(LC_ALL, "");
964 #if !defined(TEXT_DOMAIN)
965 #define TEXT_DOMAIN "SYS_TEST"
966 #endif
967 (void) textdomain(TEXT_DOMAIN);
968
969 (void) printf(gettext("Enter date, or blank line to exit.\n\t> "));
970 (void) fflush(stdout);
971 while (gets(buff) && buff[0]) {
972 d = getreldate(buff, (struct timeb *)NULL);
973 if (d == -1)
974 (void) printf(gettext("Bad format - couldn't convert.\n"));
975 else {
976 (void) cftime(buff, "%c\n", &d);
977 (void) printf("%s", buff);
978 }
979 (void) printf("\t> ");
980 (void) fflush(stdout);
981 }
982 exit(0);
983 /* NOTREACHED */
984 }
985 #endif /* defined(TEST) */
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