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Commit | Line | Data |
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28f540f4 RM |
1 | #ifndef lint |
2 | #ifndef NOID | |
74015205 | 3 | static char elsieid[] = "@(#)zic.c 7.93"; |
28f540f4 RM |
4 | #endif /* !defined NOID */ |
5 | #endif /* !defined lint */ | |
6 | ||
7 | #include "private.h" | |
92777700 | 8 | #include "locale.h" |
28f540f4 | 9 | #include "tzfile.h" |
6c2f0507 RM |
10 | #ifdef unix |
11 | #include "sys/stat.h" /* for umask manifest constants */ | |
12 | #endif /* defined unix */ | |
28f540f4 | 13 | |
f2e235b9 RM |
14 | /* |
15 | ** On some ancient hosts, predicates like `isspace(C)' are defined | |
16 | ** only if isascii(C) || C == EOF. Modern hosts obey the C Standard, | |
17 | ** which says they are defined only if C == ((unsigned char) C) || C == EOF. | |
18 | ** Neither the C Standard nor Posix require that `isascii' exist. | |
19 | ** For portability, we check both ancient and modern requirements. | |
20 | ** If isascii is not defined, the isascii check succeeds trivially. | |
21 | */ | |
22 | #include "ctype.h" | |
23 | #ifndef isascii | |
24 | #define isascii(x) 1 | |
25 | #endif | |
26 | ||
28f540f4 RM |
27 | struct rule { |
28 | const char * r_filename; | |
29 | int r_linenum; | |
30 | const char * r_name; | |
31 | ||
32 | int r_loyear; /* for example, 1986 */ | |
33 | int r_hiyear; /* for example, 1986 */ | |
34 | const char * r_yrtype; | |
35 | ||
36 | int r_month; /* 0..11 */ | |
37 | ||
38 | int r_dycode; /* see below */ | |
39 | int r_dayofmonth; | |
40 | int r_wday; | |
41 | ||
42 | long r_tod; /* time from midnight */ | |
43 | int r_todisstd; /* above is standard time if TRUE */ | |
44 | /* or wall clock time if FALSE */ | |
6c2f0507 | 45 | int r_todisgmt; /* above is GMT if TRUE */ |
28f540f4 RM |
46 | /* or local time if FALSE */ |
47 | long r_stdoff; /* offset from standard time */ | |
48 | const char * r_abbrvar; /* variable part of abbreviation */ | |
49 | ||
50 | int r_todo; /* a rule to do (used in outzone) */ | |
51 | time_t r_temp; /* used in outzone */ | |
52 | }; | |
53 | ||
54 | /* | |
55 | ** r_dycode r_dayofmonth r_wday | |
56 | */ | |
57 | ||
58 | #define DC_DOM 0 /* 1..31 */ /* unused */ | |
59 | #define DC_DOWGEQ 1 /* 1..31 */ /* 0..6 (Sun..Sat) */ | |
60 | #define DC_DOWLEQ 2 /* 1..31 */ /* 0..6 (Sun..Sat) */ | |
61 | ||
62 | struct zone { | |
63 | const char * z_filename; | |
64 | int z_linenum; | |
65 | ||
66 | const char * z_name; | |
67 | long z_gmtoff; | |
68 | const char * z_rule; | |
69 | const char * z_format; | |
70 | ||
71 | long z_stdoff; | |
72 | ||
73 | struct rule * z_rules; | |
74 | int z_nrules; | |
75 | ||
76 | struct rule z_untilrule; | |
77 | time_t z_untiltime; | |
78 | }; | |
79 | ||
6c2f0507 RM |
80 | extern int getopt P((int argc, char * const argv[], |
81 | const char * options)); | |
28f540f4 RM |
82 | extern int link P((const char * fromname, const char * toname)); |
83 | extern char * optarg; | |
84 | extern int optind; | |
28f540f4 RM |
85 | |
86 | static void addtt P((time_t starttime, int type)); | |
87 | static int addtype P((long gmtoff, const char * abbr, int isdst, | |
6c2f0507 | 88 | int ttisstd, int ttisgmt)); |
28f540f4 RM |
89 | static void leapadd P((time_t t, int positive, int rolling, int count)); |
90 | static void adjleap P((void)); | |
91 | static void associate P((void)); | |
92 | static int ciequal P((const char * ap, const char * bp)); | |
93 | static void convert P((long val, char * buf)); | |
94 | static void dolink P((const char * fromfile, const char * tofile)); | |
6c2f0507 RM |
95 | static void doabbr P((char * abbr, const char * format, |
96 | const char * letters, int isdst)); | |
28f540f4 RM |
97 | static void eat P((const char * name, int num)); |
98 | static void eats P((const char * name, int num, | |
99 | const char * rname, int rnum)); | |
100 | static long eitol P((int i)); | |
101 | static void error P((const char * message)); | |
102 | static char ** getfields P((char * buf)); | |
103 | static long gethms P((const char * string, const char * errstrng, | |
104 | int signable)); | |
105 | static void infile P((const char * filename)); | |
106 | static void inleap P((char ** fields, int nfields)); | |
107 | static void inlink P((char ** fields, int nfields)); | |
108 | static void inrule P((char ** fields, int nfields)); | |
109 | static int inzcont P((char ** fields, int nfields)); | |
110 | static int inzone P((char ** fields, int nfields)); | |
111 | static int inzsub P((char ** fields, int nfields, int iscont)); | |
112 | static int itsabbr P((const char * abbr, const char * word)); | |
113 | static int itsdir P((const char * name)); | |
114 | static int lowerit P((int c)); | |
115 | static char * memcheck P((char * tocheck)); | |
116 | static int mkdirs P((char * filename)); | |
117 | static void newabbr P((const char * abbr)); | |
118 | static long oadd P((long t1, long t2)); | |
119 | static void outzone P((const struct zone * zp, int ntzones)); | |
120 | static void puttzcode P((long code, FILE * fp)); | |
6c2f0507 | 121 | static int rcomp P((const void * leftp, const void * rightp)); |
28f540f4 RM |
122 | static time_t rpytime P((const struct rule * rp, int wantedy)); |
123 | static void rulesub P((struct rule * rp, | |
124 | const char * loyearp, const char * hiyearp, | |
125 | const char * typep, const char * monthp, | |
126 | const char * dayp, const char * timep)); | |
127 | static void setboundaries P((void)); | |
128 | static time_t tadd P((time_t t1, long t2)); | |
129 | static void usage P((void)); | |
130 | static void writezone P((const char * name)); | |
131 | static int yearistype P((int year, const char * type)); | |
132 | ||
569c558c | 133 | #if !(HAVE_STRERROR - 0) |
92777700 | 134 | static char * strerror P((int)); |
569c558c | 135 | #endif /* !(HAVE_STRERROR - 0) */ |
92777700 | 136 | |
28f540f4 RM |
137 | static int charcnt; |
138 | static int errors; | |
139 | static const char * filename; | |
140 | static int leapcnt; | |
141 | static int linenum; | |
28f540f4 RM |
142 | static time_t max_time; |
143 | static int max_year; | |
1f205a47 | 144 | static int max_year_representable; |
28f540f4 RM |
145 | static time_t min_time; |
146 | static int min_year; | |
1f205a47 | 147 | static int min_year_representable; |
28f540f4 RM |
148 | static int noise; |
149 | static const char * rfilename; | |
150 | static int rlinenum; | |
151 | static const char * progname; | |
152 | static int timecnt; | |
153 | static int typecnt; | |
28f540f4 RM |
154 | |
155 | /* | |
156 | ** Line codes. | |
157 | */ | |
158 | ||
159 | #define LC_RULE 0 | |
160 | #define LC_ZONE 1 | |
161 | #define LC_LINK 2 | |
162 | #define LC_LEAP 3 | |
163 | ||
164 | /* | |
165 | ** Which fields are which on a Zone line. | |
166 | */ | |
167 | ||
168 | #define ZF_NAME 1 | |
169 | #define ZF_GMTOFF 2 | |
170 | #define ZF_RULE 3 | |
171 | #define ZF_FORMAT 4 | |
172 | #define ZF_TILYEAR 5 | |
173 | #define ZF_TILMONTH 6 | |
174 | #define ZF_TILDAY 7 | |
175 | #define ZF_TILTIME 8 | |
176 | #define ZONE_MINFIELDS 5 | |
177 | #define ZONE_MAXFIELDS 9 | |
178 | ||
179 | /* | |
180 | ** Which fields are which on a Zone continuation line. | |
181 | */ | |
182 | ||
183 | #define ZFC_GMTOFF 0 | |
184 | #define ZFC_RULE 1 | |
185 | #define ZFC_FORMAT 2 | |
186 | #define ZFC_TILYEAR 3 | |
187 | #define ZFC_TILMONTH 4 | |
188 | #define ZFC_TILDAY 5 | |
189 | #define ZFC_TILTIME 6 | |
190 | #define ZONEC_MINFIELDS 3 | |
191 | #define ZONEC_MAXFIELDS 7 | |
192 | ||
193 | /* | |
194 | ** Which files are which on a Rule line. | |
195 | */ | |
196 | ||
197 | #define RF_NAME 1 | |
198 | #define RF_LOYEAR 2 | |
199 | #define RF_HIYEAR 3 | |
200 | #define RF_COMMAND 4 | |
201 | #define RF_MONTH 5 | |
202 | #define RF_DAY 6 | |
203 | #define RF_TOD 7 | |
204 | #define RF_STDOFF 8 | |
205 | #define RF_ABBRVAR 9 | |
206 | #define RULE_FIELDS 10 | |
207 | ||
208 | /* | |
209 | ** Which fields are which on a Link line. | |
210 | */ | |
211 | ||
212 | #define LF_FROM 1 | |
213 | #define LF_TO 2 | |
214 | #define LINK_FIELDS 3 | |
215 | ||
216 | /* | |
217 | ** Which fields are which on a Leap line. | |
218 | */ | |
219 | ||
220 | #define LP_YEAR 1 | |
221 | #define LP_MONTH 2 | |
222 | #define LP_DAY 3 | |
223 | #define LP_TIME 4 | |
224 | #define LP_CORR 5 | |
225 | #define LP_ROLL 6 | |
226 | #define LEAP_FIELDS 7 | |
227 | ||
228 | /* | |
229 | ** Year synonyms. | |
230 | */ | |
231 | ||
232 | #define YR_MINIMUM 0 | |
233 | #define YR_MAXIMUM 1 | |
234 | #define YR_ONLY 2 | |
235 | ||
236 | static struct rule * rules; | |
237 | static int nrules; /* number of rules */ | |
238 | ||
239 | static struct zone * zones; | |
240 | static int nzones; /* number of zones */ | |
241 | ||
242 | struct link { | |
243 | const char * l_filename; | |
244 | int l_linenum; | |
245 | const char * l_from; | |
246 | const char * l_to; | |
247 | }; | |
248 | ||
249 | static struct link * links; | |
250 | static int nlinks; | |
251 | ||
252 | struct lookup { | |
253 | const char * l_word; | |
254 | const int l_value; | |
255 | }; | |
256 | ||
257 | static struct lookup const * byword P((const char * string, | |
258 | const struct lookup * lp)); | |
259 | ||
260 | static struct lookup const line_codes[] = { | |
261 | { "Rule", LC_RULE }, | |
262 | { "Zone", LC_ZONE }, | |
263 | { "Link", LC_LINK }, | |
264 | { "Leap", LC_LEAP }, | |
265 | { NULL, 0} | |
266 | }; | |
267 | ||
268 | static struct lookup const mon_names[] = { | |
269 | { "January", TM_JANUARY }, | |
270 | { "February", TM_FEBRUARY }, | |
271 | { "March", TM_MARCH }, | |
272 | { "April", TM_APRIL }, | |
273 | { "May", TM_MAY }, | |
274 | { "June", TM_JUNE }, | |
275 | { "July", TM_JULY }, | |
276 | { "August", TM_AUGUST }, | |
277 | { "September", TM_SEPTEMBER }, | |
278 | { "October", TM_OCTOBER }, | |
279 | { "November", TM_NOVEMBER }, | |
280 | { "December", TM_DECEMBER }, | |
281 | { NULL, 0 } | |
282 | }; | |
283 | ||
284 | static struct lookup const wday_names[] = { | |
285 | { "Sunday", TM_SUNDAY }, | |
286 | { "Monday", TM_MONDAY }, | |
287 | { "Tuesday", TM_TUESDAY }, | |
288 | { "Wednesday", TM_WEDNESDAY }, | |
289 | { "Thursday", TM_THURSDAY }, | |
290 | { "Friday", TM_FRIDAY }, | |
291 | { "Saturday", TM_SATURDAY }, | |
292 | { NULL, 0 } | |
293 | }; | |
294 | ||
295 | static struct lookup const lasts[] = { | |
296 | { "last-Sunday", TM_SUNDAY }, | |
297 | { "last-Monday", TM_MONDAY }, | |
298 | { "last-Tuesday", TM_TUESDAY }, | |
299 | { "last-Wednesday", TM_WEDNESDAY }, | |
300 | { "last-Thursday", TM_THURSDAY }, | |
301 | { "last-Friday", TM_FRIDAY }, | |
302 | { "last-Saturday", TM_SATURDAY }, | |
303 | { NULL, 0 } | |
304 | }; | |
305 | ||
306 | static struct lookup const begin_years[] = { | |
307 | { "minimum", YR_MINIMUM }, | |
308 | { "maximum", YR_MAXIMUM }, | |
309 | { NULL, 0 } | |
310 | }; | |
311 | ||
312 | static struct lookup const end_years[] = { | |
313 | { "minimum", YR_MINIMUM }, | |
314 | { "maximum", YR_MAXIMUM }, | |
315 | { "only", YR_ONLY }, | |
316 | { NULL, 0 } | |
317 | }; | |
318 | ||
319 | static struct lookup const leap_types[] = { | |
320 | { "Rolling", TRUE }, | |
321 | { "Stationary", FALSE }, | |
322 | { NULL, 0 } | |
323 | }; | |
324 | ||
325 | static const int len_months[2][MONSPERYEAR] = { | |
326 | { 31, 28, 31, 30, 31, 30, 31, 31, 30, 31, 30, 31 }, | |
327 | { 31, 29, 31, 30, 31, 30, 31, 31, 30, 31, 30, 31 } | |
328 | }; | |
329 | ||
330 | static const int len_years[2] = { | |
331 | DAYSPERNYEAR, DAYSPERLYEAR | |
332 | }; | |
333 | ||
dfe1754a RM |
334 | static struct attype { |
335 | time_t at; | |
336 | unsigned char type; | |
337 | } attypes[TZ_MAX_TIMES]; | |
28f540f4 RM |
338 | static long gmtoffs[TZ_MAX_TYPES]; |
339 | static char isdsts[TZ_MAX_TYPES]; | |
340 | static unsigned char abbrinds[TZ_MAX_TYPES]; | |
341 | static char ttisstds[TZ_MAX_TYPES]; | |
6c2f0507 | 342 | static char ttisgmts[TZ_MAX_TYPES]; |
28f540f4 RM |
343 | static char chars[TZ_MAX_CHARS]; |
344 | static time_t trans[TZ_MAX_LEAPS]; | |
345 | static long corr[TZ_MAX_LEAPS]; | |
346 | static char roll[TZ_MAX_LEAPS]; | |
347 | ||
348 | /* | |
349 | ** Memory allocation. | |
350 | */ | |
351 | ||
352 | static char * | |
353 | memcheck(ptr) | |
354 | char * const ptr; | |
355 | { | |
356 | if (ptr == NULL) { | |
92777700 | 357 | const char *e = strerror(errno); |
6d52618b | 358 | |
92777700 RM |
359 | (void) fprintf(stderr, _("%s: Memory exhausted: %s\n"), |
360 | progname, e); | |
28f540f4 RM |
361 | (void) exit(EXIT_FAILURE); |
362 | } | |
363 | return ptr; | |
364 | } | |
365 | ||
366 | #define emalloc(size) memcheck(imalloc(size)) | |
367 | #define erealloc(ptr, size) memcheck(irealloc((ptr), (size))) | |
368 | #define ecpyalloc(ptr) memcheck(icpyalloc(ptr)) | |
369 | #define ecatalloc(oldp, newp) memcheck(icatalloc((oldp), (newp))) | |
370 | ||
371 | /* | |
372 | ** Error handling. | |
373 | */ | |
374 | ||
569c558c | 375 | #if !(HAVE_STRERROR - 0) |
92777700 RM |
376 | static char * |
377 | strerror(errnum) | |
378 | int errnum; | |
379 | { | |
569c558c UD |
380 | extern char * sys_errlist[]; |
381 | extern int sys_nerr; | |
92777700 | 382 | |
569c558c UD |
383 | return (errnum > 0 && errnum <= sys_nerr) ? |
384 | sys_errlist[errnum] : "Unknown system error"; | |
92777700 | 385 | } |
569c558c | 386 | #endif /* !(HAVE_STRERROR - 0) */ |
92777700 | 387 | |
28f540f4 RM |
388 | static void |
389 | eats(name, num, rname, rnum) | |
390 | const char * const name; | |
391 | const int num; | |
392 | const char * const rname; | |
393 | const int rnum; | |
394 | { | |
395 | filename = name; | |
396 | linenum = num; | |
397 | rfilename = rname; | |
398 | rlinenum = rnum; | |
399 | } | |
400 | ||
401 | static void | |
402 | eat(name, num) | |
403 | const char * const name; | |
404 | const int num; | |
405 | { | |
406 | eats(name, num, (char *) NULL, -1); | |
407 | } | |
408 | ||
409 | static void | |
410 | error(string) | |
411 | const char * const string; | |
412 | { | |
413 | /* | |
414 | ** Match the format of "cc" to allow sh users to | |
6c2f0507 | 415 | ** zic ... 2>&1 | error -t "*" -v |
28f540f4 RM |
416 | ** on BSD systems. |
417 | */ | |
cbd3dceb | 418 | (void) fprintf(stderr, _("\"%s\", line %d: %s"), |
28f540f4 RM |
419 | filename, linenum, string); |
420 | if (rfilename != NULL) | |
cbd3dceb | 421 | (void) fprintf(stderr, _(" (rule from \"%s\", line %d)"), |
28f540f4 RM |
422 | rfilename, rlinenum); |
423 | (void) fprintf(stderr, "\n"); | |
424 | ++errors; | |
425 | } | |
426 | ||
dfe1754a RM |
427 | static void |
428 | warning(string) | |
429 | const char * const string; | |
430 | { | |
431 | char * cp; | |
432 | ||
433 | cp = ecpyalloc("warning: "); | |
434 | cp = ecatalloc(cp, string); | |
1f205a47 | 435 | error(cp); |
dfe1754a RM |
436 | ifree(cp); |
437 | --errors; | |
438 | } | |
439 | ||
28f540f4 RM |
440 | static void |
441 | usage P((void)) | |
442 | { | |
dfe1754a | 443 | (void) fprintf(stderr, _("%s: usage is %s [ -s ] [ -v ] [ -l localtime ] [ -p posixrules ] [ -d directory ]\n\t[ -L leapseconds ] [ -y yearistype ] [ filename ... ]\n"), |
28f540f4 RM |
444 | progname, progname); |
445 | (void) exit(EXIT_FAILURE); | |
446 | } | |
447 | ||
448 | static const char * psxrules; | |
449 | static const char * lcltime; | |
450 | static const char * directory; | |
451 | static const char * leapsec; | |
452 | static const char * yitcommand; | |
453 | static int sflag = FALSE; | |
454 | ||
455 | int | |
456 | main(argc, argv) | |
457 | int argc; | |
458 | char * argv[]; | |
459 | { | |
6c2f0507 RM |
460 | register int i; |
461 | register int j; | |
28f540f4 RM |
462 | register int c; |
463 | ||
464 | #ifdef unix | |
6c2f0507 | 465 | (void) umask(umask(S_IWGRP | S_IWOTH) | (S_IWGRP | S_IWOTH)); |
28f540f4 | 466 | #endif /* defined unix */ |
92777700 RM |
467 | #if HAVE_GETTEXT - 0 |
468 | (void) setlocale(LC_MESSAGES, ""); | |
469 | #ifdef TZ_DOMAINDIR | |
470 | (void) bindtextdomain(TZ_DOMAIN, TZ_DOMAINDIR); | |
471 | #endif /* defined TEXTDOMAINDIR */ | |
472 | (void) textdomain(TZ_DOMAIN); | |
473 | #endif /* HAVE_GETTEXT - 0 */ | |
28f540f4 | 474 | progname = argv[0]; |
1ef32c3d | 475 | while ((c = getopt(argc, argv, "d:l:p:L:vsy:")) != EOF && c != -1) |
28f540f4 RM |
476 | switch (c) { |
477 | default: | |
478 | usage(); | |
479 | case 'd': | |
480 | if (directory == NULL) | |
481 | directory = optarg; | |
482 | else { | |
483 | (void) fprintf(stderr, | |
cbd3dceb | 484 | _("%s: More than one -d option specified\n"), |
28f540f4 RM |
485 | progname); |
486 | (void) exit(EXIT_FAILURE); | |
487 | } | |
488 | break; | |
489 | case 'l': | |
490 | if (lcltime == NULL) | |
491 | lcltime = optarg; | |
492 | else { | |
493 | (void) fprintf(stderr, | |
cbd3dceb | 494 | _("%s: More than one -l option specified\n"), |
28f540f4 RM |
495 | progname); |
496 | (void) exit(EXIT_FAILURE); | |
497 | } | |
498 | break; | |
499 | case 'p': | |
500 | if (psxrules == NULL) | |
501 | psxrules = optarg; | |
502 | else { | |
503 | (void) fprintf(stderr, | |
cbd3dceb | 504 | _("%s: More than one -p option specified\n"), |
28f540f4 RM |
505 | progname); |
506 | (void) exit(EXIT_FAILURE); | |
507 | } | |
508 | break; | |
509 | case 'y': | |
510 | if (yitcommand == NULL) | |
511 | yitcommand = optarg; | |
512 | else { | |
513 | (void) fprintf(stderr, | |
cbd3dceb | 514 | _("%s: More than one -y option specified\n"), |
28f540f4 RM |
515 | progname); |
516 | (void) exit(EXIT_FAILURE); | |
517 | } | |
518 | break; | |
519 | case 'L': | |
520 | if (leapsec == NULL) | |
521 | leapsec = optarg; | |
522 | else { | |
523 | (void) fprintf(stderr, | |
cbd3dceb | 524 | _("%s: More than one -L option specified\n"), |
28f540f4 RM |
525 | progname); |
526 | (void) exit(EXIT_FAILURE); | |
527 | } | |
528 | break; | |
529 | case 'v': | |
530 | noise = TRUE; | |
531 | break; | |
532 | case 's': | |
533 | sflag = TRUE; | |
534 | break; | |
535 | } | |
536 | if (optind == argc - 1 && strcmp(argv[optind], "=") == 0) | |
537 | usage(); /* usage message by request */ | |
538 | if (directory == NULL) | |
539 | directory = TZDIR; | |
540 | if (yitcommand == NULL) | |
541 | yitcommand = "yearistype"; | |
542 | ||
543 | setboundaries(); | |
544 | ||
545 | if (optind < argc && leapsec != NULL) { | |
546 | infile(leapsec); | |
547 | adjleap(); | |
548 | } | |
549 | ||
550 | for (i = optind; i < argc; ++i) | |
551 | infile(argv[i]); | |
552 | if (errors) | |
553 | (void) exit(EXIT_FAILURE); | |
554 | associate(); | |
555 | for (i = 0; i < nzones; i = j) { | |
556 | /* | |
557 | ** Find the next non-continuation zone entry. | |
558 | */ | |
559 | for (j = i + 1; j < nzones && zones[j].z_name == NULL; ++j) | |
560 | continue; | |
561 | outzone(&zones[i], j - i); | |
562 | } | |
563 | /* | |
564 | ** Make links. | |
565 | */ | |
566 | for (i = 0; i < nlinks; ++i) | |
567 | dolink(links[i].l_from, links[i].l_to); | |
568 | if (lcltime != NULL) | |
569 | dolink(lcltime, TZDEFAULT); | |
570 | if (psxrules != NULL) | |
571 | dolink(psxrules, TZDEFRULES); | |
572 | return (errors == 0) ? EXIT_SUCCESS : EXIT_FAILURE; | |
573 | } | |
574 | ||
575 | static void | |
576 | dolink(fromfile, tofile) | |
577 | const char * const fromfile; | |
578 | const char * const tofile; | |
579 | { | |
580 | register char * fromname; | |
581 | register char * toname; | |
582 | ||
583 | if (fromfile[0] == '/') | |
584 | fromname = ecpyalloc(fromfile); | |
585 | else { | |
586 | fromname = ecpyalloc(directory); | |
587 | fromname = ecatalloc(fromname, "/"); | |
588 | fromname = ecatalloc(fromname, fromfile); | |
589 | } | |
590 | if (tofile[0] == '/') | |
591 | toname = ecpyalloc(tofile); | |
592 | else { | |
593 | toname = ecpyalloc(directory); | |
594 | toname = ecatalloc(toname, "/"); | |
595 | toname = ecatalloc(toname, tofile); | |
596 | } | |
597 | /* | |
598 | ** We get to be careful here since | |
599 | ** there's a fair chance of root running us. | |
600 | */ | |
601 | if (!itsdir(toname)) | |
602 | (void) remove(toname); | |
603 | if (link(fromname, toname) != 0) { | |
74015205 UD |
604 | int failure = errno; |
605 | if (failure == ENOENT) | |
606 | if (mkdirs(toname) != 0) | |
607 | failure = errno; | |
608 | else if (link(fromname, toname) == 0) | |
609 | failure = 0; | |
610 | else | |
611 | failure = errno; | |
612 | #ifndef MISSING_SYMLINK | |
613 | if (failure == EXDEV) | |
614 | if (symlink(fromname, toname) != 0) | |
615 | failure = errno; | |
616 | else | |
617 | failure = 0; | |
618 | #endif | |
619 | if (failure) { | |
620 | const char *e = strerror(failure); | |
6d52618b | 621 | |
92777700 RM |
622 | (void) fprintf(stderr, |
623 | _("%s: Can't link from %s to %s: %s\n"), | |
624 | progname, fromname, toname, e); | |
28f540f4 RM |
625 | (void) exit(EXIT_FAILURE); |
626 | } | |
627 | } | |
628 | ifree(fromname); | |
629 | ifree(toname); | |
630 | } | |
631 | ||
f2e235b9 RM |
632 | #ifndef INT_MAX |
633 | #define INT_MAX ((int) (((unsigned)~0)>>1)) | |
634 | #endif /* !defined INT_MAX */ | |
635 | ||
636 | #ifndef INT_MIN | |
637 | #define INT_MIN ((int) ~(((unsigned)~0)>>1)) | |
638 | #endif /* !defined INT_MIN */ | |
639 | ||
640 | /* | |
641 | ** The tz file format currently allows at most 32-bit quantities. | |
642 | ** This restriction should be removed before signed 32-bit values | |
643 | ** wrap around in 2038, but unfortunately this will require a | |
644 | ** change to the tz file format. | |
645 | */ | |
646 | ||
647 | #define MAX_BITS_IN_FILE 32 | |
dfe1754a | 648 | #define TIME_T_BITS_IN_FILE ((TYPE_BIT(time_t) < MAX_BITS_IN_FILE) ? TYPE_BIT(time_t) : MAX_BITS_IN_FILE) |
f2e235b9 | 649 | |
28f540f4 RM |
650 | static void |
651 | setboundaries P((void)) | |
652 | { | |
f2e235b9 RM |
653 | if (TYPE_SIGNED(time_t)) { |
654 | min_time = ~ (time_t) 0; | |
655 | min_time <<= TIME_T_BITS_IN_FILE - 1; | |
656 | max_time = ~ (time_t) 0 - min_time; | |
28f540f4 RM |
657 | if (sflag) |
658 | min_time = 0; | |
f2e235b9 RM |
659 | } else { |
660 | min_time = 0; | |
661 | max_time = 2 - sflag; | |
662 | max_time <<= TIME_T_BITS_IN_FILE - 1; | |
663 | --max_time; | |
28f540f4 RM |
664 | } |
665 | min_year = TM_YEAR_BASE + gmtime(&min_time)->tm_year; | |
666 | max_year = TM_YEAR_BASE + gmtime(&max_time)->tm_year; | |
1f205a47 UD |
667 | min_year_representable = min_year; |
668 | max_year_representable = max_year; | |
28f540f4 RM |
669 | } |
670 | ||
671 | static int | |
672 | itsdir(name) | |
673 | const char * const name; | |
674 | { | |
675 | register char * myname; | |
676 | register int accres; | |
677 | ||
678 | myname = ecpyalloc(name); | |
679 | myname = ecatalloc(myname, "/."); | |
6c2f0507 | 680 | accres = access(myname, F_OK); |
28f540f4 RM |
681 | ifree(myname); |
682 | return accres == 0; | |
683 | } | |
684 | ||
685 | /* | |
686 | ** Associate sets of rules with zones. | |
687 | */ | |
688 | ||
689 | /* | |
690 | ** Sort by rule name. | |
691 | */ | |
692 | ||
693 | static int | |
694 | rcomp(cp1, cp2) | |
6c2f0507 RM |
695 | const void * cp1; |
696 | const void * cp2; | |
28f540f4 | 697 | { |
6c2f0507 RM |
698 | return strcmp(((const struct rule *) cp1)->r_name, |
699 | ((const struct rule *) cp2)->r_name); | |
28f540f4 RM |
700 | } |
701 | ||
702 | static void | |
703 | associate P((void)) | |
704 | { | |
705 | register struct zone * zp; | |
706 | register struct rule * rp; | |
707 | register int base, out; | |
dfe1754a | 708 | register int i, j; |
28f540f4 | 709 | |
dfe1754a | 710 | if (nrules != 0) { |
6c2f0507 RM |
711 | (void) qsort((void *) rules, (size_t) nrules, |
712 | (size_t) sizeof *rules, rcomp); | |
dfe1754a RM |
713 | for (i = 0; i < nrules - 1; ++i) { |
714 | if (strcmp(rules[i].r_name, | |
715 | rules[i + 1].r_name) != 0) | |
716 | continue; | |
717 | if (strcmp(rules[i].r_filename, | |
718 | rules[i + 1].r_filename) == 0) | |
719 | continue; | |
720 | eat(rules[i].r_filename, rules[i].r_linenum); | |
721 | warning(_("same rule name in multiple files")); | |
722 | eat(rules[i + 1].r_filename, rules[i + 1].r_linenum); | |
723 | warning(_("same rule name in multiple files")); | |
724 | for (j = i + 2; j < nrules; ++j) { | |
725 | if (strcmp(rules[i].r_name, | |
726 | rules[j].r_name) != 0) | |
727 | break; | |
728 | if (strcmp(rules[i].r_filename, | |
729 | rules[j].r_filename) == 0) | |
730 | continue; | |
731 | if (strcmp(rules[i + 1].r_filename, | |
732 | rules[j].r_filename) == 0) | |
733 | continue; | |
734 | break; | |
735 | } | |
736 | i = j - 1; | |
737 | } | |
738 | } | |
28f540f4 RM |
739 | for (i = 0; i < nzones; ++i) { |
740 | zp = &zones[i]; | |
741 | zp->z_rules = NULL; | |
742 | zp->z_nrules = 0; | |
743 | } | |
744 | for (base = 0; base < nrules; base = out) { | |
745 | rp = &rules[base]; | |
746 | for (out = base + 1; out < nrules; ++out) | |
747 | if (strcmp(rp->r_name, rules[out].r_name) != 0) | |
748 | break; | |
749 | for (i = 0; i < nzones; ++i) { | |
750 | zp = &zones[i]; | |
751 | if (strcmp(zp->z_rule, rp->r_name) != 0) | |
752 | continue; | |
753 | zp->z_rules = rp; | |
754 | zp->z_nrules = out - base; | |
755 | } | |
756 | } | |
757 | for (i = 0; i < nzones; ++i) { | |
758 | zp = &zones[i]; | |
759 | if (zp->z_nrules == 0) { | |
760 | /* | |
761 | ** Maybe we have a local standard time offset. | |
762 | */ | |
763 | eat(zp->z_filename, zp->z_linenum); | |
92777700 RM |
764 | zp->z_stdoff = gethms(zp->z_rule, _("unruly zone"), |
765 | TRUE); | |
28f540f4 RM |
766 | /* |
767 | ** Note, though, that if there's no rule, | |
768 | ** a '%s' in the format is a bad thing. | |
769 | */ | |
770 | if (strchr(zp->z_format, '%') != 0) | |
cbd3dceb | 771 | error(_("%s in ruleless zone")); |
28f540f4 RM |
772 | } |
773 | } | |
774 | if (errors) | |
775 | (void) exit(EXIT_FAILURE); | |
776 | } | |
777 | ||
778 | static void | |
779 | infile(name) | |
780 | const char * name; | |
781 | { | |
782 | register FILE * fp; | |
783 | register char ** fields; | |
784 | register char * cp; | |
785 | register const struct lookup * lp; | |
786 | register int nfields; | |
787 | register int wantcont; | |
788 | register int num; | |
789 | char buf[BUFSIZ]; | |
790 | ||
791 | if (strcmp(name, "-") == 0) { | |
cbd3dceb | 792 | name = _("standard input"); |
28f540f4 RM |
793 | fp = stdin; |
794 | } else if ((fp = fopen(name, "r")) == NULL) { | |
92777700 | 795 | const char *e = strerror(errno); |
6d52618b | 796 | |
92777700 RM |
797 | (void) fprintf(stderr, _("%s: Can't open %s: %s\n"), |
798 | progname, name, e); | |
28f540f4 RM |
799 | (void) exit(EXIT_FAILURE); |
800 | } | |
801 | wantcont = FALSE; | |
802 | for (num = 1; ; ++num) { | |
803 | eat(name, num); | |
804 | if (fgets(buf, (int) sizeof buf, fp) != buf) | |
805 | break; | |
806 | cp = strchr(buf, '\n'); | |
807 | if (cp == NULL) { | |
cbd3dceb | 808 | error(_("line too long")); |
28f540f4 RM |
809 | (void) exit(EXIT_FAILURE); |
810 | } | |
811 | *cp = '\0'; | |
812 | fields = getfields(buf); | |
813 | nfields = 0; | |
814 | while (fields[nfields] != NULL) { | |
815 | static char nada; | |
816 | ||
f2e235b9 | 817 | if (strcmp(fields[nfields], "-") == 0) |
28f540f4 RM |
818 | fields[nfields] = &nada; |
819 | ++nfields; | |
820 | } | |
821 | if (nfields == 0) { | |
822 | /* nothing to do */ | |
823 | } else if (wantcont) { | |
824 | wantcont = inzcont(fields, nfields); | |
825 | } else { | |
826 | lp = byword(fields[0], line_codes); | |
827 | if (lp == NULL) | |
cbd3dceb | 828 | error(_("input line of unknown type")); |
28f540f4 RM |
829 | else switch ((int) (lp->l_value)) { |
830 | case LC_RULE: | |
831 | inrule(fields, nfields); | |
832 | wantcont = FALSE; | |
833 | break; | |
834 | case LC_ZONE: | |
835 | wantcont = inzone(fields, nfields); | |
836 | break; | |
837 | case LC_LINK: | |
838 | inlink(fields, nfields); | |
839 | wantcont = FALSE; | |
840 | break; | |
841 | case LC_LEAP: | |
842 | if (name != leapsec) | |
843 | (void) fprintf(stderr, | |
cbd3dceb | 844 | _("%s: Leap line in non leap seconds file %s\n"), |
28f540f4 RM |
845 | progname, name); |
846 | else inleap(fields, nfields); | |
847 | wantcont = FALSE; | |
848 | break; | |
849 | default: /* "cannot happen" */ | |
850 | (void) fprintf(stderr, | |
cbd3dceb | 851 | _("%s: panic: Invalid l_value %d\n"), |
28f540f4 RM |
852 | progname, lp->l_value); |
853 | (void) exit(EXIT_FAILURE); | |
854 | } | |
855 | } | |
856 | ifree((char *) fields); | |
857 | } | |
858 | if (ferror(fp)) { | |
92777700 RM |
859 | (void) fprintf(stderr, _("%s: Error reading %s\n"), |
860 | progname, filename); | |
28f540f4 RM |
861 | (void) exit(EXIT_FAILURE); |
862 | } | |
863 | if (fp != stdin && fclose(fp)) { | |
92777700 | 864 | const char *e = strerror(errno); |
6d52618b | 865 | |
92777700 RM |
866 | (void) fprintf(stderr, _("%s: Error closing %s: %s\n"), |
867 | progname, filename, e); | |
28f540f4 RM |
868 | (void) exit(EXIT_FAILURE); |
869 | } | |
870 | if (wantcont) | |
cbd3dceb | 871 | error(_("expected continuation line not found")); |
28f540f4 RM |
872 | } |
873 | ||
874 | /* | |
875 | ** Convert a string of one of the forms | |
6c2f0507 | 876 | ** h -h hh:mm -hh:mm hh:mm:ss -hh:mm:ss |
28f540f4 RM |
877 | ** into a number of seconds. |
878 | ** A null string maps to zero. | |
879 | ** Call error with errstring and return zero on errors. | |
880 | */ | |
881 | ||
882 | static long | |
883 | gethms(string, errstring, signable) | |
884 | const char * string; | |
885 | const char * const errstring; | |
886 | const int signable; | |
887 | { | |
888 | int hh, mm, ss, sign; | |
889 | ||
890 | if (string == NULL || *string == '\0') | |
891 | return 0; | |
892 | if (!signable) | |
893 | sign = 1; | |
894 | else if (*string == '-') { | |
895 | sign = -1; | |
896 | ++string; | |
897 | } else sign = 1; | |
898 | if (sscanf(string, scheck(string, "%d"), &hh) == 1) | |
899 | mm = ss = 0; | |
900 | else if (sscanf(string, scheck(string, "%d:%d"), &hh, &mm) == 2) | |
901 | ss = 0; | |
902 | else if (sscanf(string, scheck(string, "%d:%d:%d"), | |
903 | &hh, &mm, &ss) != 3) { | |
904 | error(errstring); | |
905 | return 0; | |
906 | } | |
907 | if (hh < 0 || hh >= HOURSPERDAY || | |
908 | mm < 0 || mm >= MINSPERHOUR || | |
909 | ss < 0 || ss > SECSPERMIN) { | |
910 | error(errstring); | |
911 | return 0; | |
912 | } | |
913 | return eitol(sign) * | |
914 | (eitol(hh * MINSPERHOUR + mm) * | |
915 | eitol(SECSPERMIN) + eitol(ss)); | |
916 | } | |
917 | ||
918 | static void | |
919 | inrule(fields, nfields) | |
920 | register char ** const fields; | |
921 | const int nfields; | |
922 | { | |
923 | static struct rule r; | |
924 | ||
925 | if (nfields != RULE_FIELDS) { | |
cbd3dceb | 926 | error(_("wrong number of fields on Rule line")); |
28f540f4 RM |
927 | return; |
928 | } | |
929 | if (*fields[RF_NAME] == '\0') { | |
cbd3dceb | 930 | error(_("nameless rule")); |
28f540f4 RM |
931 | return; |
932 | } | |
933 | r.r_filename = filename; | |
934 | r.r_linenum = linenum; | |
cbd3dceb | 935 | r.r_stdoff = gethms(fields[RF_STDOFF], _("invalid saved time"), TRUE); |
28f540f4 RM |
936 | rulesub(&r, fields[RF_LOYEAR], fields[RF_HIYEAR], fields[RF_COMMAND], |
937 | fields[RF_MONTH], fields[RF_DAY], fields[RF_TOD]); | |
938 | r.r_name = ecpyalloc(fields[RF_NAME]); | |
939 | r.r_abbrvar = ecpyalloc(fields[RF_ABBRVAR]); | |
940 | rules = (struct rule *) (void *) erealloc((char *) rules, | |
941 | (int) ((nrules + 1) * sizeof *rules)); | |
942 | rules[nrules++] = r; | |
943 | } | |
944 | ||
945 | static int | |
946 | inzone(fields, nfields) | |
947 | register char ** const fields; | |
948 | const int nfields; | |
949 | { | |
950 | register int i; | |
951 | static char * buf; | |
952 | ||
953 | if (nfields < ZONE_MINFIELDS || nfields > ZONE_MAXFIELDS) { | |
cbd3dceb | 954 | error(_("wrong number of fields on Zone line")); |
28f540f4 RM |
955 | return FALSE; |
956 | } | |
957 | if (strcmp(fields[ZF_NAME], TZDEFAULT) == 0 && lcltime != NULL) { | |
958 | buf = erealloc(buf, (int) (132 + strlen(TZDEFAULT))); | |
959 | (void) sprintf(buf, | |
cbd3dceb | 960 | _("\"Zone %s\" line and -l option are mutually exclusive"), |
28f540f4 RM |
961 | TZDEFAULT); |
962 | error(buf); | |
963 | return FALSE; | |
964 | } | |
965 | if (strcmp(fields[ZF_NAME], TZDEFRULES) == 0 && psxrules != NULL) { | |
966 | buf = erealloc(buf, (int) (132 + strlen(TZDEFRULES))); | |
967 | (void) sprintf(buf, | |
cbd3dceb | 968 | _("\"Zone %s\" line and -p option are mutually exclusive"), |
28f540f4 RM |
969 | TZDEFRULES); |
970 | error(buf); | |
971 | return FALSE; | |
972 | } | |
973 | for (i = 0; i < nzones; ++i) | |
974 | if (zones[i].z_name != NULL && | |
975 | strcmp(zones[i].z_name, fields[ZF_NAME]) == 0) { | |
976 | buf = erealloc(buf, (int) (132 + | |
977 | strlen(fields[ZF_NAME]) + | |
978 | strlen(zones[i].z_filename))); | |
979 | (void) sprintf(buf, | |
cbd3dceb | 980 | _("duplicate zone name %s (file \"%s\", line %d)"), |
28f540f4 RM |
981 | fields[ZF_NAME], |
982 | zones[i].z_filename, | |
983 | zones[i].z_linenum); | |
984 | error(buf); | |
985 | return FALSE; | |
986 | } | |
987 | return inzsub(fields, nfields, FALSE); | |
988 | } | |
989 | ||
990 | static int | |
991 | inzcont(fields, nfields) | |
992 | register char ** const fields; | |
993 | const int nfields; | |
994 | { | |
995 | if (nfields < ZONEC_MINFIELDS || nfields > ZONEC_MAXFIELDS) { | |
cbd3dceb | 996 | error(_("wrong number of fields on Zone continuation line")); |
28f540f4 RM |
997 | return FALSE; |
998 | } | |
999 | return inzsub(fields, nfields, TRUE); | |
1000 | } | |
1001 | ||
1002 | static int | |
1003 | inzsub(fields, nfields, iscont) | |
1004 | register char ** const fields; | |
1005 | const int nfields; | |
1006 | const int iscont; | |
1007 | { | |
1008 | register char * cp; | |
1009 | static struct zone z; | |
1010 | register int i_gmtoff, i_rule, i_format; | |
1011 | register int i_untilyear, i_untilmonth; | |
1012 | register int i_untilday, i_untiltime; | |
1013 | register int hasuntil; | |
1014 | ||
1015 | if (iscont) { | |
1016 | i_gmtoff = ZFC_GMTOFF; | |
1017 | i_rule = ZFC_RULE; | |
1018 | i_format = ZFC_FORMAT; | |
1019 | i_untilyear = ZFC_TILYEAR; | |
1020 | i_untilmonth = ZFC_TILMONTH; | |
1021 | i_untilday = ZFC_TILDAY; | |
1022 | i_untiltime = ZFC_TILTIME; | |
1023 | z.z_name = NULL; | |
1024 | } else { | |
1025 | i_gmtoff = ZF_GMTOFF; | |
1026 | i_rule = ZF_RULE; | |
1027 | i_format = ZF_FORMAT; | |
1028 | i_untilyear = ZF_TILYEAR; | |
1029 | i_untilmonth = ZF_TILMONTH; | |
1030 | i_untilday = ZF_TILDAY; | |
1031 | i_untiltime = ZF_TILTIME; | |
1032 | z.z_name = ecpyalloc(fields[ZF_NAME]); | |
1033 | } | |
1034 | z.z_filename = filename; | |
1035 | z.z_linenum = linenum; | |
74015205 | 1036 | z.z_gmtoff = gethms(fields[i_gmtoff], _("invalid UTC offset"), TRUE); |
28f540f4 RM |
1037 | if ((cp = strchr(fields[i_format], '%')) != 0) { |
1038 | if (*++cp != 's' || strchr(cp, '%') != 0) { | |
cbd3dceb | 1039 | error(_("invalid abbreviation format")); |
28f540f4 RM |
1040 | return FALSE; |
1041 | } | |
1042 | } | |
1043 | z.z_rule = ecpyalloc(fields[i_rule]); | |
1044 | z.z_format = ecpyalloc(fields[i_format]); | |
1045 | hasuntil = nfields > i_untilyear; | |
1046 | if (hasuntil) { | |
1047 | z.z_untilrule.r_filename = filename; | |
1048 | z.z_untilrule.r_linenum = linenum; | |
1049 | rulesub(&z.z_untilrule, | |
1050 | fields[i_untilyear], | |
1051 | "only", | |
1052 | "", | |
1053 | (nfields > i_untilmonth) ? | |
1054 | fields[i_untilmonth] : "Jan", | |
1055 | (nfields > i_untilday) ? fields[i_untilday] : "1", | |
1056 | (nfields > i_untiltime) ? fields[i_untiltime] : "0"); | |
1057 | z.z_untiltime = rpytime(&z.z_untilrule, | |
1058 | z.z_untilrule.r_loyear); | |
1059 | if (iscont && nzones > 0 && | |
1060 | z.z_untiltime > min_time && | |
1061 | z.z_untiltime < max_time && | |
1062 | zones[nzones - 1].z_untiltime > min_time && | |
1063 | zones[nzones - 1].z_untiltime < max_time && | |
1064 | zones[nzones - 1].z_untiltime >= z.z_untiltime) { | |
dfe1754a | 1065 | error(_("Zone continuation line end time is not after end time of previous line")); |
28f540f4 RM |
1066 | return FALSE; |
1067 | } | |
1068 | } | |
1069 | zones = (struct zone *) (void *) erealloc((char *) zones, | |
1070 | (int) ((nzones + 1) * sizeof *zones)); | |
1071 | zones[nzones++] = z; | |
1072 | /* | |
1073 | ** If there was an UNTIL field on this line, | |
1074 | ** there's more information about the zone on the next line. | |
1075 | */ | |
1076 | return hasuntil; | |
1077 | } | |
1078 | ||
1079 | static void | |
1080 | inleap(fields, nfields) | |
1081 | register char ** const fields; | |
1082 | const int nfields; | |
1083 | { | |
1084 | register const char * cp; | |
1085 | register const struct lookup * lp; | |
1086 | register int i, j; | |
1087 | int year, month, day; | |
1088 | long dayoff, tod; | |
1089 | time_t t; | |
1090 | ||
1091 | if (nfields != LEAP_FIELDS) { | |
cbd3dceb | 1092 | error(_("wrong number of fields on Leap line")); |
28f540f4 RM |
1093 | return; |
1094 | } | |
1095 | dayoff = 0; | |
1096 | cp = fields[LP_YEAR]; | |
1097 | if (sscanf(cp, scheck(cp, "%d"), &year) != 1) { | |
1098 | /* | |
1099 | * Leapin' Lizards! | |
1100 | */ | |
cbd3dceb | 1101 | error(_("invalid leaping year")); |
28f540f4 RM |
1102 | return; |
1103 | } | |
1104 | j = EPOCH_YEAR; | |
1105 | while (j != year) { | |
1106 | if (year > j) { | |
1107 | i = len_years[isleap(j)]; | |
1108 | ++j; | |
1109 | } else { | |
1110 | --j; | |
1111 | i = -len_years[isleap(j)]; | |
1112 | } | |
1113 | dayoff = oadd(dayoff, eitol(i)); | |
1114 | } | |
1115 | if ((lp = byword(fields[LP_MONTH], mon_names)) == NULL) { | |
cbd3dceb | 1116 | error(_("invalid month name")); |
28f540f4 RM |
1117 | return; |
1118 | } | |
1119 | month = lp->l_value; | |
1120 | j = TM_JANUARY; | |
1121 | while (j != month) { | |
1122 | i = len_months[isleap(year)][j]; | |
1123 | dayoff = oadd(dayoff, eitol(i)); | |
1124 | ++j; | |
1125 | } | |
1126 | cp = fields[LP_DAY]; | |
1127 | if (sscanf(cp, scheck(cp, "%d"), &day) != 1 || | |
1128 | day <= 0 || day > len_months[isleap(year)][month]) { | |
cbd3dceb | 1129 | error(_("invalid day of month")); |
28f540f4 RM |
1130 | return; |
1131 | } | |
1132 | dayoff = oadd(dayoff, eitol(day - 1)); | |
f2e235b9 | 1133 | if (dayoff < 0 && !TYPE_SIGNED(time_t)) { |
92777700 | 1134 | error(_("time before zero")); |
28f540f4 RM |
1135 | return; |
1136 | } | |
1137 | t = (time_t) dayoff * SECSPERDAY; | |
1138 | /* | |
1139 | ** Cheap overflow check. | |
1140 | */ | |
1141 | if (t / SECSPERDAY != dayoff) { | |
cbd3dceb | 1142 | error(_("time overflow")); |
28f540f4 RM |
1143 | return; |
1144 | } | |
92777700 | 1145 | tod = gethms(fields[LP_TIME], _("invalid time of day"), FALSE); |
28f540f4 RM |
1146 | cp = fields[LP_CORR]; |
1147 | { | |
1148 | register int positive; | |
1149 | int count; | |
1150 | ||
1151 | if (strcmp(cp, "") == 0) { /* infile() turns "-" into "" */ | |
1152 | positive = FALSE; | |
1153 | count = 1; | |
1154 | } else if (strcmp(cp, "--") == 0) { | |
1155 | positive = FALSE; | |
1156 | count = 2; | |
1157 | } else if (strcmp(cp, "+") == 0) { | |
1158 | positive = TRUE; | |
1159 | count = 1; | |
1160 | } else if (strcmp(cp, "++") == 0) { | |
1161 | positive = TRUE; | |
1162 | count = 2; | |
1163 | } else { | |
cbd3dceb | 1164 | error(_("illegal CORRECTION field on Leap line")); |
28f540f4 RM |
1165 | return; |
1166 | } | |
1167 | if ((lp = byword(fields[LP_ROLL], leap_types)) == NULL) { | |
cbd3dceb | 1168 | error(_("illegal Rolling/Stationary field on Leap line")); |
28f540f4 RM |
1169 | return; |
1170 | } | |
1171 | leapadd(tadd(t, tod), positive, lp->l_value, count); | |
1172 | } | |
1173 | } | |
1174 | ||
1175 | static void | |
1176 | inlink(fields, nfields) | |
1177 | register char ** const fields; | |
1178 | const int nfields; | |
1179 | { | |
1180 | struct link l; | |
1181 | ||
1182 | if (nfields != LINK_FIELDS) { | |
cbd3dceb | 1183 | error(_("wrong number of fields on Link line")); |
28f540f4 RM |
1184 | return; |
1185 | } | |
1186 | if (*fields[LF_FROM] == '\0') { | |
cbd3dceb | 1187 | error(_("blank FROM field on Link line")); |
28f540f4 RM |
1188 | return; |
1189 | } | |
1190 | if (*fields[LF_TO] == '\0') { | |
cbd3dceb | 1191 | error(_("blank TO field on Link line")); |
28f540f4 RM |
1192 | return; |
1193 | } | |
1194 | l.l_filename = filename; | |
1195 | l.l_linenum = linenum; | |
1196 | l.l_from = ecpyalloc(fields[LF_FROM]); | |
1197 | l.l_to = ecpyalloc(fields[LF_TO]); | |
1198 | links = (struct link *) (void *) erealloc((char *) links, | |
1199 | (int) ((nlinks + 1) * sizeof *links)); | |
1200 | links[nlinks++] = l; | |
1201 | } | |
1202 | ||
1203 | static void | |
1204 | rulesub(rp, loyearp, hiyearp, typep, monthp, dayp, timep) | |
1205 | register struct rule * const rp; | |
1206 | const char * const loyearp; | |
1207 | const char * const hiyearp; | |
1208 | const char * const typep; | |
1209 | const char * const monthp; | |
1210 | const char * const dayp; | |
1211 | const char * const timep; | |
1212 | { | |
1213 | register const struct lookup * lp; | |
1214 | register const char * cp; | |
1215 | register char * dp; | |
1216 | register char * ep; | |
1217 | ||
1218 | if ((lp = byword(monthp, mon_names)) == NULL) { | |
cbd3dceb | 1219 | error(_("invalid month name")); |
28f540f4 RM |
1220 | return; |
1221 | } | |
1222 | rp->r_month = lp->l_value; | |
1223 | rp->r_todisstd = FALSE; | |
6c2f0507 | 1224 | rp->r_todisgmt = FALSE; |
28f540f4 RM |
1225 | dp = ecpyalloc(timep); |
1226 | if (*dp != '\0') { | |
1227 | ep = dp + strlen(dp) - 1; | |
1228 | switch (lowerit(*ep)) { | |
1229 | case 's': /* Standard */ | |
1230 | rp->r_todisstd = TRUE; | |
6c2f0507 | 1231 | rp->r_todisgmt = FALSE; |
28f540f4 RM |
1232 | *ep = '\0'; |
1233 | break; | |
1234 | case 'w': /* Wall */ | |
1235 | rp->r_todisstd = FALSE; | |
6c2f0507 | 1236 | rp->r_todisgmt = FALSE; |
28f540f4 | 1237 | *ep = '\0'; |
1f205a47 | 1238 | break; |
28f540f4 RM |
1239 | case 'g': /* Greenwich */ |
1240 | case 'u': /* Universal */ | |
1241 | case 'z': /* Zulu */ | |
1242 | rp->r_todisstd = TRUE; | |
6c2f0507 | 1243 | rp->r_todisgmt = TRUE; |
28f540f4 RM |
1244 | *ep = '\0'; |
1245 | break; | |
1246 | } | |
1247 | } | |
92777700 | 1248 | rp->r_tod = gethms(dp, _("invalid time of day"), FALSE); |
28f540f4 RM |
1249 | ifree(dp); |
1250 | /* | |
1251 | ** Year work. | |
1252 | */ | |
1253 | cp = loyearp; | |
6c2f0507 RM |
1254 | lp = byword(cp, begin_years); |
1255 | if (lp != NULL) switch ((int) lp->l_value) { | |
28f540f4 | 1256 | case YR_MINIMUM: |
f2e235b9 | 1257 | rp->r_loyear = INT_MIN; |
28f540f4 RM |
1258 | break; |
1259 | case YR_MAXIMUM: | |
f2e235b9 | 1260 | rp->r_loyear = INT_MAX; |
28f540f4 RM |
1261 | break; |
1262 | default: /* "cannot happen" */ | |
1263 | (void) fprintf(stderr, | |
cbd3dceb | 1264 | _("%s: panic: Invalid l_value %d\n"), |
28f540f4 RM |
1265 | progname, lp->l_value); |
1266 | (void) exit(EXIT_FAILURE); | |
1267 | } else if (sscanf(cp, scheck(cp, "%d"), &rp->r_loyear) != 1) { | |
cbd3dceb | 1268 | error(_("invalid starting year")); |
28f540f4 | 1269 | return; |
74015205 | 1270 | } else if (noise) { |
1f205a47 UD |
1271 | if (rp->r_loyear < min_year_representable) |
1272 | warning(_("starting year too low to be represented")); | |
1273 | else if (rp->r_loyear > max_year_representable) | |
1274 | warning(_("starting year too high to be represented")); | |
74015205 | 1275 | } |
28f540f4 RM |
1276 | cp = hiyearp; |
1277 | if ((lp = byword(cp, end_years)) != NULL) switch ((int) lp->l_value) { | |
1278 | case YR_MINIMUM: | |
f2e235b9 | 1279 | rp->r_hiyear = INT_MIN; |
28f540f4 RM |
1280 | break; |
1281 | case YR_MAXIMUM: | |
f2e235b9 | 1282 | rp->r_hiyear = INT_MAX; |
28f540f4 RM |
1283 | break; |
1284 | case YR_ONLY: | |
1285 | rp->r_hiyear = rp->r_loyear; | |
1286 | break; | |
1287 | default: /* "cannot happen" */ | |
1288 | (void) fprintf(stderr, | |
cbd3dceb | 1289 | _("%s: panic: Invalid l_value %d\n"), |
28f540f4 RM |
1290 | progname, lp->l_value); |
1291 | (void) exit(EXIT_FAILURE); | |
1292 | } else if (sscanf(cp, scheck(cp, "%d"), &rp->r_hiyear) != 1) { | |
cbd3dceb | 1293 | error(_("invalid ending year")); |
28f540f4 | 1294 | return; |
74015205 | 1295 | } else if (noise) { |
1f205a47 UD |
1296 | if (rp->r_loyear < min_year_representable) |
1297 | warning(_("starting year too low to be represented")); | |
1298 | else if (rp->r_loyear > max_year_representable) | |
1299 | warning(_("starting year too high to be represented")); | |
74015205 | 1300 | } |
28f540f4 | 1301 | if (rp->r_loyear > rp->r_hiyear) { |
cbd3dceb | 1302 | error(_("starting year greater than ending year")); |
28f540f4 RM |
1303 | return; |
1304 | } | |
1305 | if (*typep == '\0') | |
1306 | rp->r_yrtype = NULL; | |
1307 | else { | |
1308 | if (rp->r_loyear == rp->r_hiyear) { | |
cbd3dceb | 1309 | error(_("typed single year")); |
28f540f4 RM |
1310 | return; |
1311 | } | |
1312 | rp->r_yrtype = ecpyalloc(typep); | |
1313 | } | |
4cca6b86 UD |
1314 | if (rp->r_loyear < min_year && rp->r_loyear > 0) |
1315 | min_year = rp->r_loyear; | |
28f540f4 RM |
1316 | /* |
1317 | ** Day work. | |
1318 | ** Accept things such as: | |
1319 | ** 1 | |
1320 | ** last-Sunday | |
1321 | ** Sun<=20 | |
1322 | ** Sun>=7 | |
1323 | */ | |
1324 | dp = ecpyalloc(dayp); | |
1325 | if ((lp = byword(dp, lasts)) != NULL) { | |
1326 | rp->r_dycode = DC_DOWLEQ; | |
1327 | rp->r_wday = lp->l_value; | |
1328 | rp->r_dayofmonth = len_months[1][rp->r_month]; | |
1329 | } else { | |
1330 | if ((ep = strchr(dp, '<')) != 0) | |
1331 | rp->r_dycode = DC_DOWLEQ; | |
1332 | else if ((ep = strchr(dp, '>')) != 0) | |
1333 | rp->r_dycode = DC_DOWGEQ; | |
1334 | else { | |
1335 | ep = dp; | |
1336 | rp->r_dycode = DC_DOM; | |
1337 | } | |
1338 | if (rp->r_dycode != DC_DOM) { | |
1339 | *ep++ = 0; | |
1340 | if (*ep++ != '=') { | |
cbd3dceb | 1341 | error(_("invalid day of month")); |
28f540f4 RM |
1342 | ifree(dp); |
1343 | return; | |
1344 | } | |
1345 | if ((lp = byword(dp, wday_names)) == NULL) { | |
cbd3dceb | 1346 | error(_("invalid weekday name")); |
28f540f4 RM |
1347 | ifree(dp); |
1348 | return; | |
1349 | } | |
1350 | rp->r_wday = lp->l_value; | |
1351 | } | |
1352 | if (sscanf(ep, scheck(ep, "%d"), &rp->r_dayofmonth) != 1 || | |
1353 | rp->r_dayofmonth <= 0 || | |
1354 | (rp->r_dayofmonth > len_months[1][rp->r_month])) { | |
cbd3dceb | 1355 | error(_("invalid day of month")); |
28f540f4 RM |
1356 | ifree(dp); |
1357 | return; | |
1358 | } | |
1359 | } | |
1360 | ifree(dp); | |
1361 | } | |
1362 | ||
1363 | static void | |
1364 | convert(val, buf) | |
1365 | const long val; | |
1366 | char * const buf; | |
1367 | { | |
1368 | register int i; | |
1369 | register long shift; | |
1370 | ||
1371 | for (i = 0, shift = 24; i < 4; ++i, shift -= 8) | |
1372 | buf[i] = val >> shift; | |
1373 | } | |
1374 | ||
1375 | static void | |
1376 | puttzcode(val, fp) | |
1377 | const long val; | |
1378 | FILE * const fp; | |
1379 | { | |
1380 | char buf[4]; | |
1381 | ||
1382 | convert(val, buf); | |
6c2f0507 | 1383 | (void) fwrite((void *) buf, (size_t) sizeof buf, (size_t) 1, fp); |
28f540f4 RM |
1384 | } |
1385 | ||
dfe1754a RM |
1386 | static int |
1387 | atcomp(avp, bvp) | |
1388 | void * avp; | |
1389 | void * bvp; | |
1390 | { | |
1391 | if (((struct attype *) avp)->at < ((struct attype *) bvp)->at) | |
1392 | return -1; | |
1393 | else if (((struct attype *) avp)->at > ((struct attype *) bvp)->at) | |
1394 | return 1; | |
1395 | else return 0; | |
1396 | } | |
1397 | ||
28f540f4 RM |
1398 | static void |
1399 | writezone(name) | |
1400 | const char * const name; | |
1401 | { | |
1402 | register FILE * fp; | |
1403 | register int i, j; | |
1404 | static char * fullname; | |
1405 | static struct tzhead tzh; | |
dfe1754a RM |
1406 | time_t ats[TZ_MAX_TIMES]; |
1407 | unsigned char types[TZ_MAX_TIMES]; | |
28f540f4 | 1408 | |
dfe1754a RM |
1409 | /* |
1410 | ** Sort. | |
1411 | */ | |
1412 | if (timecnt > 1) | |
1413 | (void) qsort((void *) attypes, (size_t) timecnt, | |
1414 | (size_t) sizeof *attypes, atcomp); | |
1415 | /* | |
1416 | ** Optimize. | |
1417 | */ | |
1418 | { | |
1419 | int fromi; | |
1420 | int toi; | |
1421 | ||
1422 | toi = 0; | |
1423 | fromi = 0; | |
4cca6b86 UD |
1424 | while (fromi < timecnt && attypes[fromi].at < min_time) |
1425 | ++fromi; | |
dfe1754a | 1426 | if (isdsts[0] == 0) |
4cca6b86 | 1427 | while (fromi < timecnt && attypes[fromi].type == 0) |
dfe1754a RM |
1428 | ++fromi; /* handled by default rule */ |
1429 | for ( ; fromi < timecnt; ++fromi) { | |
1430 | if (toi != 0 | |
1431 | && ((attypes[fromi].at | |
1432 | + gmtoffs[attypes[toi - 1].type]) | |
1433 | <= (attypes[toi - 1].at | |
1434 | + gmtoffs[toi == 1 ? 0 | |
1435 | : attypes[toi - 2].type]))) { | |
1436 | attypes[toi - 1].type = attypes[fromi].type; | |
1437 | continue; | |
1438 | } | |
1439 | if (toi == 0 || | |
1440 | attypes[toi - 1].type != attypes[fromi].type) | |
1441 | attypes[toi++] = attypes[fromi]; | |
1442 | } | |
1443 | timecnt = toi; | |
1444 | } | |
1445 | /* | |
1446 | ** Transfer. | |
1447 | */ | |
1448 | for (i = 0; i < timecnt; ++i) { | |
1449 | ats[i] = attypes[i].at; | |
1450 | types[i] = attypes[i].type; | |
1451 | } | |
28f540f4 RM |
1452 | fullname = erealloc(fullname, |
1453 | (int) (strlen(directory) + 1 + strlen(name) + 1)); | |
1454 | (void) sprintf(fullname, "%s/%s", directory, name); | |
6d52618b UD |
1455 | /* |
1456 | ** Remove old file, if any, to snap links. | |
1457 | */ | |
1458 | if (!itsdir(fullname) && remove(fullname) != 0 && errno != ENOENT) { | |
1459 | const char *e = strerror(errno); | |
1460 | ||
1461 | (void) fprintf(stderr, _("%s: Can't remove %s: %s\n"), | |
1462 | progname, fullname, e); | |
1463 | (void) exit(EXIT_FAILURE); | |
1464 | } | |
28f540f4 RM |
1465 | if ((fp = fopen(fullname, "wb")) == NULL) { |
1466 | if (mkdirs(fullname) != 0) | |
1467 | (void) exit(EXIT_FAILURE); | |
1468 | if ((fp = fopen(fullname, "wb")) == NULL) { | |
92777700 | 1469 | const char *e = strerror(errno); |
6d52618b | 1470 | |
92777700 RM |
1471 | (void) fprintf(stderr, _("%s: Can't create %s: %s\n"), |
1472 | progname, fullname, e); | |
28f540f4 RM |
1473 | (void) exit(EXIT_FAILURE); |
1474 | } | |
1475 | } | |
6c2f0507 | 1476 | convert(eitol(typecnt), tzh.tzh_ttisgmtcnt); |
28f540f4 RM |
1477 | convert(eitol(typecnt), tzh.tzh_ttisstdcnt); |
1478 | convert(eitol(leapcnt), tzh.tzh_leapcnt); | |
1479 | convert(eitol(timecnt), tzh.tzh_timecnt); | |
1480 | convert(eitol(typecnt), tzh.tzh_typecnt); | |
1481 | convert(eitol(charcnt), tzh.tzh_charcnt); | |
9756dfe1 | 1482 | (void) strncpy(tzh.tzh_magic, TZ_MAGIC, sizeof tzh.tzh_magic); |
dfe1754a | 1483 | #define DO(field) (void) fwrite((void *) tzh.field, (size_t) sizeof tzh.field, (size_t) 1, fp) |
9756dfe1 | 1484 | DO(tzh_magic); |
6c2f0507 RM |
1485 | DO(tzh_reserved); |
1486 | DO(tzh_ttisgmtcnt); | |
1487 | DO(tzh_ttisstdcnt); | |
1488 | DO(tzh_leapcnt); | |
1489 | DO(tzh_timecnt); | |
1490 | DO(tzh_typecnt); | |
1491 | DO(tzh_charcnt); | |
1492 | #undef DO | |
28f540f4 RM |
1493 | for (i = 0; i < timecnt; ++i) { |
1494 | j = leapcnt; | |
1495 | while (--j >= 0) | |
1496 | if (ats[i] >= trans[j]) { | |
1497 | ats[i] = tadd(ats[i], corr[j]); | |
1498 | break; | |
1499 | } | |
1500 | puttzcode((long) ats[i], fp); | |
1501 | } | |
1502 | if (timecnt > 0) | |
6c2f0507 RM |
1503 | (void) fwrite((void *) types, (size_t) sizeof types[0], |
1504 | (size_t) timecnt, fp); | |
28f540f4 RM |
1505 | for (i = 0; i < typecnt; ++i) { |
1506 | puttzcode((long) gmtoffs[i], fp); | |
1507 | (void) putc(isdsts[i], fp); | |
1508 | (void) putc(abbrinds[i], fp); | |
1509 | } | |
1510 | if (charcnt != 0) | |
6c2f0507 RM |
1511 | (void) fwrite((void *) chars, (size_t) sizeof chars[0], |
1512 | (size_t) charcnt, fp); | |
28f540f4 RM |
1513 | for (i = 0; i < leapcnt; ++i) { |
1514 | if (roll[i]) { | |
1515 | if (timecnt == 0 || trans[i] < ats[0]) { | |
1516 | j = 0; | |
1517 | while (isdsts[j]) | |
1518 | if (++j >= typecnt) { | |
1519 | j = 0; | |
1520 | break; | |
1521 | } | |
1522 | } else { | |
1523 | j = 1; | |
1524 | while (j < timecnt && trans[i] >= ats[j]) | |
1525 | ++j; | |
1526 | j = types[j - 1]; | |
1527 | } | |
1528 | puttzcode((long) tadd(trans[i], -gmtoffs[j]), fp); | |
1529 | } else puttzcode((long) trans[i], fp); | |
1530 | puttzcode((long) corr[i], fp); | |
1531 | } | |
1532 | for (i = 0; i < typecnt; ++i) | |
1533 | (void) putc(ttisstds[i], fp); | |
6c2f0507 RM |
1534 | for (i = 0; i < typecnt; ++i) |
1535 | (void) putc(ttisgmts[i], fp); | |
28f540f4 | 1536 | if (ferror(fp) || fclose(fp)) { |
92777700 RM |
1537 | (void) fprintf(stderr, _("%s: Error writing %s\n"), |
1538 | progname, fullname); | |
28f540f4 RM |
1539 | (void) exit(EXIT_FAILURE); |
1540 | } | |
1541 | } | |
1542 | ||
6c2f0507 RM |
1543 | static void |
1544 | doabbr(abbr, format, letters, isdst) | |
1545 | char * const abbr; | |
1546 | const char * const format; | |
1547 | const char * const letters; | |
1548 | const int isdst; | |
1549 | { | |
1550 | if (strchr(format, '/') == NULL) { | |
1551 | if (letters == NULL) | |
1552 | (void) strcpy(abbr, format); | |
1553 | else (void) sprintf(abbr, format, letters); | |
1554 | } else if (isdst) | |
1555 | (void) strcpy(abbr, strchr(format, '/') + 1); | |
1556 | else { | |
1557 | (void) strcpy(abbr, format); | |
1558 | *strchr(abbr, '/') = '\0'; | |
1559 | } | |
1560 | } | |
1561 | ||
28f540f4 RM |
1562 | static void |
1563 | outzone(zpfirst, zonecount) | |
1564 | const struct zone * const zpfirst; | |
1565 | const int zonecount; | |
1566 | { | |
1567 | register const struct zone * zp; | |
1568 | register struct rule * rp; | |
1569 | register int i, j; | |
1570 | register int usestart, useuntil; | |
1571 | register time_t starttime, untiltime; | |
1572 | register long gmtoff; | |
1573 | register long stdoff; | |
1574 | register int year; | |
1575 | register long startoff; | |
28f540f4 | 1576 | register int startttisstd; |
6c2f0507 | 1577 | register int startttisgmt; |
28f540f4 RM |
1578 | register int type; |
1579 | char startbuf[BUFSIZ]; | |
1580 | ||
1581 | INITIALIZE(untiltime); | |
1582 | INITIALIZE(starttime); | |
28f540f4 RM |
1583 | /* |
1584 | ** Now. . .finally. . .generate some useful data! | |
1585 | */ | |
1586 | timecnt = 0; | |
1587 | typecnt = 0; | |
1588 | charcnt = 0; | |
1589 | /* | |
1590 | ** A guess that may well be corrected later. | |
1591 | */ | |
1592 | stdoff = 0; | |
1593 | /* | |
1594 | ** Thanks to Earl Chew (earl@dnd.icp.nec.com.au) | |
1595 | ** for noting the need to unconditionally initialize startttisstd. | |
1596 | */ | |
1597 | startttisstd = FALSE; | |
6c2f0507 | 1598 | startttisgmt = FALSE; |
28f540f4 RM |
1599 | for (i = 0; i < zonecount; ++i) { |
1600 | zp = &zpfirst[i]; | |
1601 | usestart = i > 0 && (zp - 1)->z_untiltime > min_time; | |
1602 | useuntil = i < (zonecount - 1); | |
1603 | if (useuntil && zp->z_untiltime <= min_time) | |
1604 | continue; | |
1605 | gmtoff = zp->z_gmtoff; | |
1606 | eat(zp->z_filename, zp->z_linenum); | |
dfe1754a RM |
1607 | *startbuf = '\0'; |
1608 | startoff = zp->z_gmtoff; | |
28f540f4 RM |
1609 | if (zp->z_nrules == 0) { |
1610 | stdoff = zp->z_stdoff; | |
6c2f0507 RM |
1611 | doabbr(startbuf, zp->z_format, |
1612 | (char *) NULL, stdoff != 0); | |
28f540f4 | 1613 | type = addtype(oadd(zp->z_gmtoff, stdoff), |
6c2f0507 RM |
1614 | startbuf, stdoff != 0, startttisstd, |
1615 | startttisgmt); | |
dfe1754a | 1616 | if (usestart) { |
28f540f4 | 1617 | addtt(starttime, type); |
dfe1754a RM |
1618 | usestart = FALSE; |
1619 | } | |
28f540f4 RM |
1620 | else if (stdoff != 0) |
1621 | addtt(min_time, type); | |
1622 | } else for (year = min_year; year <= max_year; ++year) { | |
1623 | if (useuntil && year > zp->z_untilrule.r_hiyear) | |
1624 | break; | |
1625 | /* | |
1626 | ** Mark which rules to do in the current year. | |
1627 | ** For those to do, calculate rpytime(rp, year); | |
1628 | */ | |
1629 | for (j = 0; j < zp->z_nrules; ++j) { | |
1630 | rp = &zp->z_rules[j]; | |
1631 | eats(zp->z_filename, zp->z_linenum, | |
1632 | rp->r_filename, rp->r_linenum); | |
1633 | rp->r_todo = year >= rp->r_loyear && | |
1634 | year <= rp->r_hiyear && | |
1635 | yearistype(year, rp->r_yrtype); | |
1636 | if (rp->r_todo) | |
1637 | rp->r_temp = rpytime(rp, year); | |
1638 | } | |
1639 | for ( ; ; ) { | |
1640 | register int k; | |
1641 | register time_t jtime, ktime; | |
1642 | register long offset; | |
1643 | char buf[BUFSIZ]; | |
1644 | ||
1645 | INITIALIZE(ktime); | |
1646 | if (useuntil) { | |
1647 | /* | |
74015205 | 1648 | ** Turn untiltime into UTC |
28f540f4 RM |
1649 | ** assuming the current gmtoff and |
1650 | ** stdoff values. | |
1651 | */ | |
1652 | untiltime = zp->z_untiltime; | |
6c2f0507 | 1653 | if (!zp->z_untilrule.r_todisgmt) |
28f540f4 RM |
1654 | untiltime = tadd(untiltime, |
1655 | -gmtoff); | |
1656 | if (!zp->z_untilrule.r_todisstd) | |
1657 | untiltime = tadd(untiltime, | |
1658 | -stdoff); | |
1659 | } | |
1660 | /* | |
1661 | ** Find the rule (of those to do, if any) | |
1662 | ** that takes effect earliest in the year. | |
1663 | */ | |
1664 | k = -1; | |
28f540f4 RM |
1665 | for (j = 0; j < zp->z_nrules; ++j) { |
1666 | rp = &zp->z_rules[j]; | |
1667 | if (!rp->r_todo) | |
1668 | continue; | |
1669 | eats(zp->z_filename, zp->z_linenum, | |
1670 | rp->r_filename, rp->r_linenum); | |
6c2f0507 | 1671 | offset = rp->r_todisgmt ? 0 : gmtoff; |
28f540f4 RM |
1672 | if (!rp->r_todisstd) |
1673 | offset = oadd(offset, stdoff); | |
1674 | jtime = rp->r_temp; | |
1675 | if (jtime == min_time || | |
1676 | jtime == max_time) | |
1677 | continue; | |
1678 | jtime = tadd(jtime, -offset); | |
1679 | if (k < 0 || jtime < ktime) { | |
1680 | k = j; | |
1681 | ktime = jtime; | |
1682 | } | |
1683 | } | |
1684 | if (k < 0) | |
1685 | break; /* go on to next year */ | |
1686 | rp = &zp->z_rules[k]; | |
1687 | rp->r_todo = FALSE; | |
1688 | if (useuntil && ktime >= untiltime) | |
1689 | break; | |
dfe1754a RM |
1690 | stdoff = rp->r_stdoff; |
1691 | if (usestart && ktime == starttime) | |
1692 | usestart = FALSE; | |
28f540f4 | 1693 | if (usestart) { |
dfe1754a RM |
1694 | if (ktime < starttime) { |
1695 | startoff = oadd(zp->z_gmtoff, | |
1696 | stdoff); | |
1697 | doabbr(startbuf, zp->z_format, | |
1698 | rp->r_abbrvar, | |
1699 | rp->r_stdoff != 0); | |
1700 | continue; | |
1701 | } | |
1702 | if (*startbuf == '\0' && | |
1703 | startoff == oadd(zp->z_gmtoff, | |
1704 | stdoff)) { | |
1705 | doabbr(startbuf, zp->z_format, | |
1706 | rp->r_abbrvar, | |
1707 | rp->r_stdoff != 0); | |
28f540f4 | 1708 | } |
28f540f4 RM |
1709 | } |
1710 | eats(zp->z_filename, zp->z_linenum, | |
1711 | rp->r_filename, rp->r_linenum); | |
6c2f0507 RM |
1712 | doabbr(buf, zp->z_format, rp->r_abbrvar, |
1713 | rp->r_stdoff != 0); | |
28f540f4 RM |
1714 | offset = oadd(zp->z_gmtoff, rp->r_stdoff); |
1715 | type = addtype(offset, buf, rp->r_stdoff != 0, | |
6c2f0507 | 1716 | rp->r_todisstd, rp->r_todisgmt); |
28f540f4 | 1717 | addtt(ktime, type); |
28f540f4 RM |
1718 | } |
1719 | } | |
dfe1754a RM |
1720 | if (usestart) { |
1721 | if (*startbuf == '\0' && | |
1722 | zp->z_format != NULL && | |
1723 | strchr(zp->z_format, '%') == NULL && | |
1724 | strchr(zp->z_format, '/') == NULL) | |
1725 | (void) strcpy(startbuf, zp->z_format); | |
1726 | eat(zp->z_filename, zp->z_linenum); | |
1727 | if (*startbuf == '\0') | |
6bc31da0 | 1728 | error(_("can't determine time zone abbreviation to use just after until time")); |
dfe1754a RM |
1729 | else addtt(starttime, |
1730 | addtype(startoff, startbuf, | |
1731 | startoff != zp->z_gmtoff, | |
1732 | startttisstd, | |
1733 | startttisgmt)); | |
1734 | } | |
28f540f4 RM |
1735 | /* |
1736 | ** Now we may get to set starttime for the next zone line. | |
1737 | */ | |
1738 | if (useuntil) { | |
28f540f4 | 1739 | startttisstd = zp->z_untilrule.r_todisstd; |
6c2f0507 | 1740 | startttisgmt = zp->z_untilrule.r_todisgmt; |
dfe1754a | 1741 | starttime = zp->z_untiltime; |
28f540f4 RM |
1742 | if (!startttisstd) |
1743 | starttime = tadd(starttime, -stdoff); | |
dfe1754a RM |
1744 | if (!startttisgmt) |
1745 | starttime = tadd(starttime, -gmtoff); | |
28f540f4 RM |
1746 | } |
1747 | } | |
1748 | writezone(zpfirst->z_name); | |
1749 | } | |
1750 | ||
1751 | static void | |
1752 | addtt(starttime, type) | |
1753 | const time_t starttime; | |
4cca6b86 | 1754 | int type; |
28f540f4 | 1755 | { |
4cca6b86 UD |
1756 | if (starttime <= min_time || |
1757 | (timecnt == 1 && attypes[0].at < min_time)) { | |
1758 | gmtoffs[0] = gmtoffs[type]; | |
1759 | isdsts[0] = isdsts[type]; | |
1760 | ttisstds[0] = ttisstds[type]; | |
1761 | ttisgmts[0] = ttisgmts[type]; | |
1762 | if (abbrinds[type] != 0) | |
1763 | (void) strcpy(chars, &chars[abbrinds[type]]); | |
1764 | abbrinds[0] = 0; | |
1765 | charcnt = strlen(chars) + 1; | |
1766 | typecnt = 1; | |
1767 | timecnt = 0; | |
1768 | type = 0; | |
1769 | } | |
28f540f4 | 1770 | if (timecnt >= TZ_MAX_TIMES) { |
cbd3dceb | 1771 | error(_("too many transitions?!")); |
28f540f4 RM |
1772 | (void) exit(EXIT_FAILURE); |
1773 | } | |
dfe1754a RM |
1774 | attypes[timecnt].at = starttime; |
1775 | attypes[timecnt].type = type; | |
28f540f4 RM |
1776 | ++timecnt; |
1777 | } | |
1778 | ||
1779 | static int | |
6c2f0507 | 1780 | addtype(gmtoff, abbr, isdst, ttisstd, ttisgmt) |
28f540f4 RM |
1781 | const long gmtoff; |
1782 | const char * const abbr; | |
1783 | const int isdst; | |
1784 | const int ttisstd; | |
6c2f0507 | 1785 | const int ttisgmt; |
28f540f4 RM |
1786 | { |
1787 | register int i, j; | |
1788 | ||
dfe1754a RM |
1789 | if (isdst != TRUE && isdst != FALSE) { |
1790 | error(_("internal error - addtype called with bad isdst")); | |
1791 | (void) exit(EXIT_FAILURE); | |
1792 | } | |
1793 | if (ttisstd != TRUE && ttisstd != FALSE) { | |
1794 | error(_("internal error - addtype called with bad ttisstd")); | |
1795 | (void) exit(EXIT_FAILURE); | |
1796 | } | |
1797 | if (ttisgmt != TRUE && ttisgmt != FALSE) { | |
1798 | error(_("internal error - addtype called with bad ttisgmt")); | |
1799 | (void) exit(EXIT_FAILURE); | |
1800 | } | |
28f540f4 RM |
1801 | /* |
1802 | ** See if there's already an entry for this zone type. | |
1803 | ** If so, just return its index. | |
1804 | */ | |
1805 | for (i = 0; i < typecnt; ++i) { | |
1806 | if (gmtoff == gmtoffs[i] && isdst == isdsts[i] && | |
1807 | strcmp(abbr, &chars[abbrinds[i]]) == 0 && | |
6c2f0507 RM |
1808 | ttisstd == ttisstds[i] && |
1809 | ttisgmt == ttisgmts[i]) | |
28f540f4 RM |
1810 | return i; |
1811 | } | |
1812 | /* | |
1813 | ** There isn't one; add a new one, unless there are already too | |
1814 | ** many. | |
1815 | */ | |
1816 | if (typecnt >= TZ_MAX_TYPES) { | |
cbd3dceb | 1817 | error(_("too many local time types")); |
28f540f4 RM |
1818 | (void) exit(EXIT_FAILURE); |
1819 | } | |
1820 | gmtoffs[i] = gmtoff; | |
1821 | isdsts[i] = isdst; | |
1822 | ttisstds[i] = ttisstd; | |
6c2f0507 | 1823 | ttisgmts[i] = ttisgmt; |
28f540f4 RM |
1824 | |
1825 | for (j = 0; j < charcnt; ++j) | |
1826 | if (strcmp(&chars[j], abbr) == 0) | |
1827 | break; | |
1828 | if (j == charcnt) | |
1829 | newabbr(abbr); | |
1830 | abbrinds[i] = j; | |
1831 | ++typecnt; | |
1832 | return i; | |
1833 | } | |
1834 | ||
1835 | static void | |
1836 | leapadd(t, positive, rolling, count) | |
1837 | const time_t t; | |
1838 | const int positive; | |
1839 | const int rolling; | |
1840 | int count; | |
1841 | { | |
1842 | register int i, j; | |
1843 | ||
1844 | if (leapcnt + (positive ? count : 1) > TZ_MAX_LEAPS) { | |
cbd3dceb | 1845 | error(_("too many leap seconds")); |
28f540f4 RM |
1846 | (void) exit(EXIT_FAILURE); |
1847 | } | |
1848 | for (i = 0; i < leapcnt; ++i) | |
1849 | if (t <= trans[i]) { | |
1850 | if (t == trans[i]) { | |
cbd3dceb | 1851 | error(_("repeated leap second moment")); |
28f540f4 RM |
1852 | (void) exit(EXIT_FAILURE); |
1853 | } | |
1854 | break; | |
1855 | } | |
1856 | do { | |
1857 | for (j = leapcnt; j > i; --j) { | |
1858 | trans[j] = trans[j - 1]; | |
1859 | corr[j] = corr[j - 1]; | |
1860 | roll[j] = roll[j - 1]; | |
1861 | } | |
1862 | trans[i] = t; | |
1863 | corr[i] = positive ? 1L : eitol(-count); | |
1864 | roll[i] = rolling; | |
1865 | ++leapcnt; | |
1866 | } while (positive && --count != 0); | |
1867 | } | |
1868 | ||
1869 | static void | |
1870 | adjleap P((void)) | |
1871 | { | |
1872 | register int i; | |
1873 | register long last = 0; | |
1874 | ||
1875 | /* | |
1876 | ** propagate leap seconds forward | |
1877 | */ | |
1878 | for (i = 0; i < leapcnt; ++i) { | |
1879 | trans[i] = tadd(trans[i], last); | |
1880 | last = corr[i] += last; | |
1881 | } | |
1882 | } | |
1883 | ||
1884 | static int | |
1885 | yearistype(year, type) | |
1886 | const int year; | |
1887 | const char * const type; | |
1888 | { | |
1889 | static char * buf; | |
1890 | int result; | |
1891 | ||
1892 | if (type == NULL || *type == '\0') | |
1893 | return TRUE; | |
1894 | buf = erealloc(buf, (int) (132 + strlen(yitcommand) + strlen(type))); | |
1895 | (void) sprintf(buf, "%s %d %s", yitcommand, year, type); | |
1896 | result = system(buf); | |
1897 | if (result == 0) | |
1898 | return TRUE; | |
1899 | if (result == (1 << 8)) | |
1900 | return FALSE; | |
cbd3dceb RM |
1901 | error(_("Wild result from command execution")); |
1902 | (void) fprintf(stderr, _("%s: command was '%s', result was %d\n"), | |
28f540f4 RM |
1903 | progname, buf, result); |
1904 | for ( ; ; ) | |
1905 | (void) exit(EXIT_FAILURE); | |
1906 | } | |
1907 | ||
1908 | static int | |
1909 | lowerit(a) | |
f2e235b9 | 1910 | int a; |
28f540f4 | 1911 | { |
f2e235b9 | 1912 | a = (unsigned char) a; |
28f540f4 RM |
1913 | return (isascii(a) && isupper(a)) ? tolower(a) : a; |
1914 | } | |
1915 | ||
1916 | static int | |
1917 | ciequal(ap, bp) /* case-insensitive equality */ | |
1918 | register const char * ap; | |
1919 | register const char * bp; | |
1920 | { | |
1921 | while (lowerit(*ap) == lowerit(*bp++)) | |
1922 | if (*ap++ == '\0') | |
1923 | return TRUE; | |
1924 | return FALSE; | |
1925 | } | |
1926 | ||
1927 | static int | |
1928 | itsabbr(abbr, word) | |
1929 | register const char * abbr; | |
1930 | register const char * word; | |
1931 | { | |
1932 | if (lowerit(*abbr) != lowerit(*word)) | |
1933 | return FALSE; | |
1934 | ++word; | |
1935 | while (*++abbr != '\0') | |
f2e235b9 RM |
1936 | do { |
1937 | if (*word == '\0') | |
1938 | return FALSE; | |
1939 | } while (lowerit(*word++) != lowerit(*abbr)); | |
28f540f4 RM |
1940 | return TRUE; |
1941 | } | |
1942 | ||
1943 | static const struct lookup * | |
1944 | byword(word, table) | |
1945 | register const char * const word; | |
1946 | register const struct lookup * const table; | |
1947 | { | |
1948 | register const struct lookup * foundlp; | |
1949 | register const struct lookup * lp; | |
1950 | ||
1951 | if (word == NULL || table == NULL) | |
1952 | return NULL; | |
1953 | /* | |
1954 | ** Look for exact match. | |
1955 | */ | |
1956 | for (lp = table; lp->l_word != NULL; ++lp) | |
1957 | if (ciequal(word, lp->l_word)) | |
1958 | return lp; | |
1959 | /* | |
1960 | ** Look for inexact match. | |
1961 | */ | |
1962 | foundlp = NULL; | |
1963 | for (lp = table; lp->l_word != NULL; ++lp) | |
74015205 | 1964 | if (itsabbr(word, lp->l_word)) { |
28f540f4 RM |
1965 | if (foundlp == NULL) |
1966 | foundlp = lp; | |
1967 | else return NULL; /* multiple inexact matches */ | |
74015205 | 1968 | } |
28f540f4 RM |
1969 | return foundlp; |
1970 | } | |
1971 | ||
1972 | static char ** | |
1973 | getfields(cp) | |
1974 | register char * cp; | |
1975 | { | |
1976 | register char * dp; | |
1977 | register char ** array; | |
1978 | register int nsubs; | |
1979 | ||
1980 | if (cp == NULL) | |
1981 | return NULL; | |
1982 | array = (char **) (void *) | |
1983 | emalloc((int) ((strlen(cp) + 1) * sizeof *array)); | |
1984 | nsubs = 0; | |
1985 | for ( ; ; ) { | |
f2e235b9 | 1986 | while (isascii(*cp) && isspace((unsigned char) *cp)) |
28f540f4 RM |
1987 | ++cp; |
1988 | if (*cp == '\0' || *cp == '#') | |
1989 | break; | |
1990 | array[nsubs++] = dp = cp; | |
1991 | do { | |
1992 | if ((*dp = *cp++) != '"') | |
1993 | ++dp; | |
1994 | else while ((*dp = *cp++) != '"') | |
1995 | if (*dp != '\0') | |
1996 | ++dp; | |
cbd3dceb | 1997 | else error(_("Odd number of quotation marks")); |
28f540f4 | 1998 | } while (*cp != '\0' && *cp != '#' && |
f2e235b9 RM |
1999 | (!isascii(*cp) || !isspace((unsigned char) *cp))); |
2000 | if (isascii(*cp) && isspace((unsigned char) *cp)) | |
28f540f4 RM |
2001 | ++cp; |
2002 | *dp = '\0'; | |
2003 | } | |
2004 | array[nsubs] = NULL; | |
2005 | return array; | |
2006 | } | |
2007 | ||
2008 | static long | |
2009 | oadd(t1, t2) | |
2010 | const long t1; | |
2011 | const long t2; | |
2012 | { | |
2013 | register long t; | |
2014 | ||
2015 | t = t1 + t2; | |
2016 | if ((t2 > 0 && t <= t1) || (t2 < 0 && t >= t1)) { | |
cbd3dceb | 2017 | error(_("time overflow")); |
28f540f4 RM |
2018 | (void) exit(EXIT_FAILURE); |
2019 | } | |
2020 | return t; | |
2021 | } | |
2022 | ||
2023 | static time_t | |
2024 | tadd(t1, t2) | |
2025 | const time_t t1; | |
2026 | const long t2; | |
2027 | { | |
2028 | register time_t t; | |
2029 | ||
2030 | if (t1 == max_time && t2 > 0) | |
2031 | return max_time; | |
2032 | if (t1 == min_time && t2 < 0) | |
2033 | return min_time; | |
2034 | t = t1 + t2; | |
2035 | if ((t2 > 0 && t <= t1) || (t2 < 0 && t >= t1)) { | |
cbd3dceb | 2036 | error(_("time overflow")); |
28f540f4 RM |
2037 | (void) exit(EXIT_FAILURE); |
2038 | } | |
2039 | return t; | |
2040 | } | |
2041 | ||
2042 | /* | |
2043 | ** Given a rule, and a year, compute the date - in seconds since January 1, | |
2044 | ** 1970, 00:00 LOCAL time - in that year that the rule refers to. | |
2045 | */ | |
2046 | ||
2047 | static time_t | |
2048 | rpytime(rp, wantedy) | |
2049 | register const struct rule * const rp; | |
2050 | register const int wantedy; | |
2051 | { | |
2052 | register int y, m, i; | |
2053 | register long dayoff; /* with a nod to Margaret O. */ | |
2054 | register time_t t; | |
2055 | ||
f2e235b9 | 2056 | if (wantedy == INT_MIN) |
28f540f4 | 2057 | return min_time; |
f2e235b9 | 2058 | if (wantedy == INT_MAX) |
28f540f4 RM |
2059 | return max_time; |
2060 | dayoff = 0; | |
2061 | m = TM_JANUARY; | |
2062 | y = EPOCH_YEAR; | |
2063 | while (wantedy != y) { | |
2064 | if (wantedy > y) { | |
2065 | i = len_years[isleap(y)]; | |
2066 | ++y; | |
2067 | } else { | |
2068 | --y; | |
2069 | i = -len_years[isleap(y)]; | |
2070 | } | |
2071 | dayoff = oadd(dayoff, eitol(i)); | |
2072 | } | |
2073 | while (m != rp->r_month) { | |
2074 | i = len_months[isleap(y)][m]; | |
2075 | dayoff = oadd(dayoff, eitol(i)); | |
2076 | ++m; | |
2077 | } | |
2078 | i = rp->r_dayofmonth; | |
2079 | if (m == TM_FEBRUARY && i == 29 && !isleap(y)) { | |
2080 | if (rp->r_dycode == DC_DOWLEQ) | |
2081 | --i; | |
2082 | else { | |
cbd3dceb | 2083 | error(_("use of 2/29 in non leap-year")); |
28f540f4 RM |
2084 | (void) exit(EXIT_FAILURE); |
2085 | } | |
2086 | } | |
2087 | --i; | |
2088 | dayoff = oadd(dayoff, eitol(i)); | |
2089 | if (rp->r_dycode == DC_DOWGEQ || rp->r_dycode == DC_DOWLEQ) { | |
2090 | register long wday; | |
2091 | ||
2092 | #define LDAYSPERWEEK ((long) DAYSPERWEEK) | |
2093 | wday = eitol(EPOCH_WDAY); | |
2094 | /* | |
2095 | ** Don't trust mod of negative numbers. | |
2096 | */ | |
2097 | if (dayoff >= 0) | |
2098 | wday = (wday + dayoff) % LDAYSPERWEEK; | |
2099 | else { | |
2100 | wday -= ((-dayoff) % LDAYSPERWEEK); | |
2101 | if (wday < 0) | |
2102 | wday += LDAYSPERWEEK; | |
2103 | } | |
2104 | while (wday != eitol(rp->r_wday)) | |
2105 | if (rp->r_dycode == DC_DOWGEQ) { | |
2106 | dayoff = oadd(dayoff, (long) 1); | |
2107 | if (++wday >= LDAYSPERWEEK) | |
2108 | wday = 0; | |
2109 | ++i; | |
2110 | } else { | |
2111 | dayoff = oadd(dayoff, (long) -1); | |
2112 | if (--wday < 0) | |
2113 | wday = LDAYSPERWEEK - 1; | |
2114 | --i; | |
2115 | } | |
2116 | if (i < 0 || i >= len_months[isleap(y)][m]) { | |
cbd3dceb | 2117 | error(_("no day in month matches rule")); |
28f540f4 RM |
2118 | (void) exit(EXIT_FAILURE); |
2119 | } | |
2120 | } | |
f2e235b9 | 2121 | if (dayoff < 0 && !TYPE_SIGNED(time_t)) |
28f540f4 RM |
2122 | return min_time; |
2123 | t = (time_t) dayoff * SECSPERDAY; | |
2124 | /* | |
2125 | ** Cheap overflow check. | |
2126 | */ | |
2127 | if (t / SECSPERDAY != dayoff) | |
2128 | return (dayoff > 0) ? max_time : min_time; | |
2129 | return tadd(t, rp->r_tod); | |
2130 | } | |
2131 | ||
2132 | static void | |
2133 | newabbr(string) | |
2134 | const char * const string; | |
2135 | { | |
2136 | register int i; | |
2137 | ||
2138 | i = strlen(string) + 1; | |
2139 | if (charcnt + i > TZ_MAX_CHARS) { | |
cbd3dceb | 2140 | error(_("too many, or too long, time zone abbreviations")); |
28f540f4 RM |
2141 | (void) exit(EXIT_FAILURE); |
2142 | } | |
2143 | (void) strcpy(&chars[charcnt], string); | |
2144 | charcnt += eitol(i); | |
2145 | } | |
2146 | ||
2147 | static int | |
2148 | mkdirs(argname) | |
2149 | char * const argname; | |
2150 | { | |
2151 | register char * name; | |
2152 | register char * cp; | |
2153 | ||
2154 | if (argname == NULL || *argname == '\0') | |
2155 | return 0; | |
2156 | cp = name = ecpyalloc(argname); | |
2157 | while ((cp = strchr(cp + 1, '/')) != 0) { | |
2158 | *cp = '\0'; | |
2159 | #ifndef unix | |
2160 | /* | |
6c2f0507 | 2161 | ** DOS drive specifier? |
28f540f4 | 2162 | */ |
f2e235b9 RM |
2163 | if (isalpha((unsigned char) name[0]) && |
2164 | name[1] == ':' && name[2] == '\0') { | |
28f540f4 RM |
2165 | *cp = '/'; |
2166 | continue; | |
2167 | } | |
2168 | #endif /* !defined unix */ | |
2169 | if (!itsdir(name)) { | |
2170 | /* | |
2171 | ** It doesn't seem to exist, so we try to create it. | |
377a515b UD |
2172 | ** Creation may fail because of the directory being |
2173 | ** created by some other multiprocessor, so we get | |
2174 | ** to do extra checking. | |
28f540f4 | 2175 | */ |
4cca6b86 | 2176 | if (mkdir(name, S_IRUSR|S_IWUSR|S_IXUSR|S_IRGRP|S_IXGRP|S_IROTH|S_IXOTH) != 0) { |
377a515b | 2177 | const char *e = strerror(errno); |
6d52618b | 2178 | |
377a515b | 2179 | if (errno != EEXIST || !itsdir(name)) { |
7cc27f44 | 2180 | (void) fprintf(stderr, |
377a515b UD |
2181 | _("%s: Can't create directory %s: %s\n"), |
2182 | progname, name, e); | |
7cc27f44 UD |
2183 | ifree(name); |
2184 | return -1; | |
2185 | } | |
28f540f4 RM |
2186 | } |
2187 | } | |
2188 | *cp = '/'; | |
2189 | } | |
2190 | ifree(name); | |
2191 | return 0; | |
2192 | } | |
2193 | ||
2194 | static long | |
2195 | eitol(i) | |
2196 | const int i; | |
2197 | { | |
2198 | long l; | |
2199 | ||
2200 | l = i; | |
2201 | if ((i < 0 && l >= 0) || (i == 0 && l != 0) || (i > 0 && l <= 0)) { | |
2202 | (void) fprintf(stderr, | |
cbd3dceb | 2203 | _("%s: %d did not sign extend correctly\n"), |
28f540f4 RM |
2204 | progname, i); |
2205 | (void) exit(EXIT_FAILURE); | |
2206 | } | |
2207 | return l; | |
2208 | } | |
2209 | ||
2210 | /* | |
2211 | ** UNIX was a registered trademark of UNIX System Laboratories in 1993. | |
2212 | */ |