?  search:
summary | log | graphiclog1 | graphiclog2 | commit | commitdiff | tree | refs | edit | fork
blame | history | raw | HEAD
Updated to fedora-glibc-20050302T1820
[glibc.git] / timezone / zic.c
blobd855475f9fa55b0db3ed6fcf6dca2dd5d70c03fd
1 static char elsieid[] = "@(#)zic.c 7.118";
2
3 /*
4 ** Regardless of the type of time_t, we do our work using this type.
5 */
6
7 typedef int zic_t;
8
9 #include "private.h"
10 #include "locale.h"
11 #include "tzfile.h"
12
13 #if HAVE_SYS_STAT_H
14 #include "sys/stat.h"
15 #endif
16 #ifdef S_IRUSR
17 #define MKDIR_UMASK (S_IRUSR|S_IWUSR|S_IXUSR|S_IRGRP|S_IXGRP|S_IROTH|S_IXOTH)
18 #else
19 #define MKDIR_UMASK 0755
20 #endif
21
22 /*
23 ** On some ancient hosts, predicates like `isspace(C)' are defined
24 ** only if isascii(C) || C == EOF. Modern hosts obey the C Standard,
25 ** which says they are defined only if C == ((unsigned char) C) || C == EOF.
26 ** Neither the C Standard nor Posix require that `isascii' exist.
27 ** For portability, we check both ancient and modern requirements.
28 ** If isascii is not defined, the isascii check succeeds trivially.
29 */
30 #include "ctype.h"
31 #ifndef isascii
32 #define isascii(x) 1
33 #endif
34
35 struct rule {
36 const char * r_filename;
37 int r_linenum;
38 const char * r_name;
39
40 int r_loyear; /* for example, 1986 */
41 int r_hiyear; /* for example, 1986 */
42 const char * r_yrtype;
43
44 int r_month; /* 0..11 */
45
46 int r_dycode; /* see below */
47 int r_dayofmonth;
48 int r_wday;
49
50 long r_tod; /* time from midnight */
51 int r_todisstd; /* above is standard time if TRUE */
52 /* or wall clock time if FALSE */
53 int r_todisgmt; /* above is GMT if TRUE */
54 /* or local time if FALSE */
55 long r_stdoff; /* offset from standard time */
56 const char * r_abbrvar; /* variable part of abbreviation */
57
58 int r_todo; /* a rule to do (used in outzone) */
59 zic_t r_temp; /* used in outzone */
60 };
61
62 /*
63 ** r_dycode r_dayofmonth r_wday
64 */
65
66 #define DC_DOM 0 /* 1..31 */ /* unused */
67 #define DC_DOWGEQ 1 /* 1..31 */ /* 0..6 (Sun..Sat) */
68 #define DC_DOWLEQ 2 /* 1..31 */ /* 0..6 (Sun..Sat) */
69
70 struct zone {
71 const char * z_filename;
72 int z_linenum;
73
74 const char * z_name;
75 long z_gmtoff;
76 const char * z_rule;
77 const char * z_format;
78
79 long z_stdoff;
80
81 struct rule * z_rules;
82 int z_nrules;
83
84 struct rule z_untilrule;
85 zic_t z_untiltime;
86 };
87
88 extern int getopt P((int argc, char * const argv[],
89 const char * options));
90 extern int link P((const char * fromname, const char * toname));
91 extern char * optarg;
92 extern int optind;
93
94 static void addtt P((zic_t starttime, int type));
95 static int addtype P((long gmtoff, const char * abbr, int isdst,
96 int ttisstd, int ttisgmt));
97 static void leapadd P((zic_t t, int positive, int rolling, int count));
98 static void adjleap P((void));
99 static void associate P((void));
100 static int ciequal P((const char * ap, const char * bp));
101 static void convert P((long val, char * buf));
102 static void dolink P((const char * fromfile, const char * tofile));
103 static void doabbr P((char * abbr, const char * format,
104 const char * letters, int isdst));
105 static void eat P((const char * name, int num));
106 static void eats P((const char * name, int num,
107 const char * rname, int rnum));
108 static long eitol P((int i));
109 static void error P((const char * message));
110 static char ** getfields P((char * buf));
111 static long gethms P((const char * string, const char * errstrng,
112 int signable));
113 static void infile P((const char * filename));
114 static void inleap P((char ** fields, int nfields));
115 static void inlink P((char ** fields, int nfields));
116 static void inrule P((char ** fields, int nfields));
117 static int inzcont P((char ** fields, int nfields));
118 static int inzone P((char ** fields, int nfields));
119 static int inzsub P((char ** fields, int nfields, int iscont));
120 static int itsabbr P((const char * abbr, const char * word));
121 static int itsdir P((const char * name));
122 static int lowerit P((int c));
123 static char * memcheck P((char * tocheck));
124 static int mkdirs P((char * filename));
125 static void newabbr P((const char * abbr));
126 static long oadd P((long t1, long t2));
127 static void outzone P((const struct zone * zp, int ntzones));
128 static void puttzcode P((long code, FILE * fp));
129 static int rcomp P((const void * leftp, const void * rightp));
130 static zic_t rpytime P((const struct rule * rp, int wantedy));
131 static void rulesub P((struct rule * rp,
132 const char * loyearp, const char * hiyearp,
133 const char * typep, const char * monthp,
134 const char * dayp, const char * timep));
135 static void setboundaries P((void));
136 static zic_t tadd P((zic_t t1, long t2));
137 static void usage P((void));
138 static void writezone P((const char * name));
139 static int yearistype P((int year, const char * type));
140
141 #if !(HAVE_STRERROR - 0)
142 static char * strerror P((int));
143 #endif /* !(HAVE_STRERROR - 0) */
144
145 static int charcnt;
146 static int errors;
147 static const char * filename;
148 static int leapcnt;
149 static int linenum;
150 static zic_t max_time;
151 static int max_year;
152 static int max_year_representable;
153 static zic_t min_time;
154 static int min_year;
155 static int min_year_representable;
156 static int noise;
157 static const char * rfilename;
158 static int rlinenum;
159 static const char * progname;
160 static int timecnt;
161 static int typecnt;
162
163 /*
164 ** Line codes.
165 */
166
167 #define LC_RULE 0
168 #define LC_ZONE 1
169 #define LC_LINK 2
170 #define LC_LEAP 3
171
172 /*
173 ** Which fields are which on a Zone line.
174 */
175
176 #define ZF_NAME 1
177 #define ZF_GMTOFF 2
178 #define ZF_RULE 3
179 #define ZF_FORMAT 4
180 #define ZF_TILYEAR 5
181 #define ZF_TILMONTH 6
182 #define ZF_TILDAY 7
183 #define ZF_TILTIME 8
184 #define ZONE_MINFIELDS 5
185 #define ZONE_MAXFIELDS 9
186
187 /*
188 ** Which fields are which on a Zone continuation line.
189 */
190
191 #define ZFC_GMTOFF 0
192 #define ZFC_RULE 1
193 #define ZFC_FORMAT 2
194 #define ZFC_TILYEAR 3
195 #define ZFC_TILMONTH 4
196 #define ZFC_TILDAY 5
197 #define ZFC_TILTIME 6
198 #define ZONEC_MINFIELDS 3
199 #define ZONEC_MAXFIELDS 7
200
201 /*
202 ** Which files are which on a Rule line.
203 */
204
205 #define RF_NAME 1
206 #define RF_LOYEAR 2
207 #define RF_HIYEAR 3
208 #define RF_COMMAND 4
209 #define RF_MONTH 5
210 #define RF_DAY 6
211 #define RF_TOD 7
212 #define RF_STDOFF 8
213 #define RF_ABBRVAR 9
214 #define RULE_FIELDS 10
215
216 /*
217 ** Which fields are which on a Link line.
218 */
219
220 #define LF_FROM 1
221 #define LF_TO 2
222 #define LINK_FIELDS 3
223
224 /*
225 ** Which fields are which on a Leap line.
226 */
227
228 #define LP_YEAR 1
229 #define LP_MONTH 2
230 #define LP_DAY 3
231 #define LP_TIME 4
232 #define LP_CORR 5
233 #define LP_ROLL 6
234 #define LEAP_FIELDS 7
235
236 /*
237 ** Year synonyms.
238 */
239
240 #define YR_MINIMUM 0
241 #define YR_MAXIMUM 1
242 #define YR_ONLY 2
243
244 static struct rule * rules;
245 static int nrules; /* number of rules */
246
247 static struct zone * zones;
248 static int nzones; /* number of zones */
249
250 struct link {
251 const char * l_filename;
252 int l_linenum;
253 const char * l_from;
254 const char * l_to;
255 };
256
257 static struct link * links;
258 static int nlinks;
259
260 struct lookup {
261 const char * l_word;
262 const int l_value;
263 };
264
265 static struct lookup const * byword P((const char * string,
266 const struct lookup * lp));
267
268 static struct lookup const line_codes[] = {
269 { "Rule", LC_RULE },
270 { "Zone", LC_ZONE },
271 { "Link", LC_LINK },
272 { "Leap", LC_LEAP },
273 { NULL, 0}
274 };
275
276 static struct lookup const mon_names[] = {
277 { "January", TM_JANUARY },
278 { "February", TM_FEBRUARY },
279 { "March", TM_MARCH },
280 { "April", TM_APRIL },
281 { "May", TM_MAY },
282 { "June", TM_JUNE },
283 { "July", TM_JULY },
284 { "August", TM_AUGUST },
285 { "September", TM_SEPTEMBER },
286 { "October", TM_OCTOBER },
287 { "November", TM_NOVEMBER },
288 { "December", TM_DECEMBER },
289 { NULL, 0 }
290 };
291
292 static struct lookup const wday_names[] = {
293 { "Sunday", TM_SUNDAY },
294 { "Monday", TM_MONDAY },
295 { "Tuesday", TM_TUESDAY },
296 { "Wednesday", TM_WEDNESDAY },
297 { "Thursday", TM_THURSDAY },
298 { "Friday", TM_FRIDAY },
299 { "Saturday", TM_SATURDAY },
300 { NULL, 0 }
301 };
302
303 static struct lookup const lasts[] = {
304 { "last-Sunday", TM_SUNDAY },
305 { "last-Monday", TM_MONDAY },
306 { "last-Tuesday", TM_TUESDAY },
307 { "last-Wednesday", TM_WEDNESDAY },
308 { "last-Thursday", TM_THURSDAY },
309 { "last-Friday", TM_FRIDAY },
310 { "last-Saturday", TM_SATURDAY },
311 { NULL, 0 }
312 };
313
314 static struct lookup const begin_years[] = {
315 { "minimum", YR_MINIMUM },
316 { "maximum", YR_MAXIMUM },
317 { NULL, 0 }
318 };
319
320 static struct lookup const end_years[] = {
321 { "minimum", YR_MINIMUM },
322 { "maximum", YR_MAXIMUM },
323 { "only", YR_ONLY },
324 { NULL, 0 }
325 };
326
327 static struct lookup const leap_types[] = {
328 { "Rolling", TRUE },
329 { "Stationary", FALSE },
330 { NULL, 0 }
331 };
332
333 static const int len_months[2][MONSPERYEAR] = {
334 { 31, 28, 31, 30, 31, 30, 31, 31, 30, 31, 30, 31 },
335 { 31, 29, 31, 30, 31, 30, 31, 31, 30, 31, 30, 31 }
336 };
337
338 static const int len_years[2] = {
339 DAYSPERNYEAR, DAYSPERLYEAR
340 };
341
342 static struct attype {
343 zic_t at;
344 unsigned char type;
345 } attypes[TZ_MAX_TIMES];
346 static long gmtoffs[TZ_MAX_TYPES];
347 static char isdsts[TZ_MAX_TYPES];
348 static unsigned char abbrinds[TZ_MAX_TYPES];
349 static char ttisstds[TZ_MAX_TYPES];
350 static char ttisgmts[TZ_MAX_TYPES];
351 static char chars[TZ_MAX_CHARS];
352 static zic_t trans[TZ_MAX_LEAPS];
353 static long corr[TZ_MAX_LEAPS];
354 static char roll[TZ_MAX_LEAPS];
355
356 /*
357 ** Memory allocation.
358 */
359
360 static char *
361 memcheck(ptr)
362 char * const ptr;
363 {
364 if (ptr == NULL) {
365 const char *e = strerror(errno);
366
367 (void) fprintf(stderr, _("%s: Memory exhausted: %s\n"),
368 progname, e);
369 (void) exit(EXIT_FAILURE);
370 }
371 return ptr;
372 }
373
374 #define emalloc(size) memcheck(imalloc(size))
375 #define erealloc(ptr, size) memcheck(irealloc((ptr), (size)))
376 #define ecpyalloc(ptr) memcheck(icpyalloc(ptr))
377 #define ecatalloc(oldp, newp) memcheck(icatalloc((oldp), (newp)))
378
379 /*
380 ** Error handling.
381 */
382
383 #if !(HAVE_STRERROR - 0)
384 static char *
385 strerror(errnum)
386 int errnum;
387 {
388 extern char * sys_errlist[];
389 extern int sys_nerr;
390
391 return (errnum > 0 && errnum <= sys_nerr) ?
392 sys_errlist[errnum] : _("Unknown system error");
393 }
394 #endif /* !(HAVE_STRERROR - 0) */
395
396 static void
397 eats(name, num, rname, rnum)
398 const char * const name;
399 const int num;
400 const char * const rname;
401 const int rnum;
402 {
403 filename = name;
404 linenum = num;
405 rfilename = rname;
406 rlinenum = rnum;
407 }
408
409 static void
410 eat(name, num)
411 const char * const name;
412 const int num;
413 {
414 eats(name, num, (char *) NULL, -1);
415 }
416
417 static void
418 error(string)
419 const char * const string;
420 {
421 /*
422 ** Match the format of "cc" to allow sh users to
423 ** zic ... 2>&1 | error -t "*" -v
424 ** on BSD systems.
425 */
426 (void) fprintf(stderr, _("\"%s\", line %d: %s"),
427 filename, linenum, string);
428 if (rfilename != NULL)
429 (void) fprintf(stderr, _(" (rule from \"%s\", line %d)"),
430 rfilename, rlinenum);
431 (void) fprintf(stderr, "\n");
432 ++errors;
433 }
434
435 static void
436 warning(string)
437 const char * const string;
438 {
439 char * cp;
440
441 cp = ecpyalloc(_("warning: "));
442 cp = ecatalloc(cp, string);
443 error(cp);
444 ifree(cp);
445 --errors;
446 }
447
448 static void
449 usage P((void))
450 {
451 (void) fprintf(stderr, _("%s: usage is %s [ --version ] [ -s ] [ -v ] [ -l localtime ] [ -p posixrules ] \\\n\t[ -d directory ] [ -L leapseconds ] [ -y yearistype ] [ filename ... ]\n"),
452 progname, progname);
453 (void) exit(EXIT_FAILURE);
454 }
455
456 static const char * psxrules;
457 static const char * lcltime;
458 static const char * directory;
459 static const char * leapsec;
460 static const char * yitcommand;
461 static int sflag = FALSE;
462
463 int
464 main(argc, argv)
465 int argc;
466 char * argv[];
467 {
468 register int i;
469 register int j;
470 register int c;
471
472 #ifdef unix
473 (void) umask(umask(S_IWGRP | S_IWOTH) | (S_IWGRP | S_IWOTH));
474 #endif /* defined unix */
475 #if HAVE_GETTEXT - 0
476 (void) setlocale(LC_CTYPE, "");
477 (void) setlocale(LC_MESSAGES, "");
478 #ifdef TZ_DOMAINDIR
479 (void) bindtextdomain(TZ_DOMAIN, TZ_DOMAINDIR);
480 #endif /* defined TEXTDOMAINDIR */
481 (void) textdomain(TZ_DOMAIN);
482 #endif /* HAVE_GETTEXT - 0 */
483 progname = argv[0];
484 for (i = 1; i < argc; ++i)
485 if (strcmp(argv[i], "--version") == 0) {
486 (void) printf("%s\n", elsieid);
487 (void) exit(EXIT_SUCCESS);
488 }
489 while ((c = getopt(argc, argv, "d:l:p:L:vsy:")) != EOF && c != -1)
490 switch (c) {
491 default:
492 usage();
493 case 'd':
494 if (directory == NULL)
495 directory = optarg;
496 else {
497 (void) fprintf(stderr,
498 _("%s: More than one -d option specified\n"),
499 progname);
500 (void) exit(EXIT_FAILURE);
501 }
502 break;
503 case 'l':
504 if (lcltime == NULL)
505 lcltime = optarg;
506 else {
507 (void) fprintf(stderr,
508 _("%s: More than one -l option specified\n"),
509 progname);
510 (void) exit(EXIT_FAILURE);
511 }
512 break;
513 case 'p':
514 if (psxrules == NULL)
515 psxrules = optarg;
516 else {
517 (void) fprintf(stderr,
518 _("%s: More than one -p option specified\n"),
519 progname);
520 (void) exit(EXIT_FAILURE);
521 }
522 break;
523 case 'y':
524 if (yitcommand == NULL)
525 yitcommand = optarg;
526 else {
527 (void) fprintf(stderr,
528 _("%s: More than one -y option specified\n"),
529 progname);
530 (void) exit(EXIT_FAILURE);
531 }
532 break;
533 case 'L':
534 if (leapsec == NULL)
535 leapsec = optarg;
536 else {
537 (void) fprintf(stderr,
538 _("%s: More than one -L option specified\n"),
539 progname);
540 (void) exit(EXIT_FAILURE);
541 }
542 break;
543 case 'v':
544 noise = TRUE;
545 break;
546 case 's':
547 sflag = TRUE;
548 break;
549 }
550 if (optind == argc - 1 && strcmp(argv[optind], "=") == 0)
551 usage(); /* usage message by request */
552 if (directory == NULL)
553 directory = TZDIR;
554 if (yitcommand == NULL)
555 yitcommand = "yearistype";
556
557 setboundaries();
558
559 if (optind < argc && leapsec != NULL) {
560 infile(leapsec);
561 adjleap();
562 }
563
564 for (i = optind; i < argc; ++i)
565 infile(argv[i]);
566 if (errors)
567 (void) exit(EXIT_FAILURE);
568 associate();
569 for (i = 0; i < nzones; i = j) {
570 /*
571 ** Find the next non-continuation zone entry.
572 */
573 for (j = i + 1; j < nzones && zones[j].z_name == NULL; ++j)
574 continue;
575 outzone(&zones[i], j - i);
576 }
577 /*
578 ** Make links.
579 */
580 for (i = 0; i < nlinks; ++i) {
581 eat(links[i].l_filename, links[i].l_linenum);
582 dolink(links[i].l_from, links[i].l_to);
583 }
584 if (lcltime != NULL) {
585 eat("command line", 1);
586 dolink(lcltime, TZDEFAULT);
587 }
588 if (psxrules != NULL) {
589 eat("command line", 1);
590 dolink(psxrules, TZDEFRULES);
591 }
592 return (errors == 0) ? EXIT_SUCCESS : EXIT_FAILURE;
593 }
594
595 static void
596 dolink(fromfile, tofile)
597 const char * const fromfile;
598 const char * const tofile;
599 {
600 register char * fromname;
601 register char * toname;
602
603 if (fromfile[0] == '/')
604 fromname = ecpyalloc(fromfile);
605 else {
606 fromname = ecpyalloc(directory);
607 fromname = ecatalloc(fromname, "/");
608 fromname = ecatalloc(fromname, fromfile);
609 }
610 if (tofile[0] == '/')
611 toname = ecpyalloc(tofile);
612 else {
613 toname = ecpyalloc(directory);
614 toname = ecatalloc(toname, "/");
615 toname = ecatalloc(toname, tofile);
616 }
617 /*
618 ** We get to be careful here since
619 ** there's a fair chance of root running us.
620 */
621 if (!itsdir(toname))
622 (void) remove(toname);
623 if (link(fromname, toname) != 0) {
624 int result;
625
626 if (mkdirs(toname) != 0)
627 (void) exit(EXIT_FAILURE);
628
629 result = link(fromname, toname);
630 #if (HAVE_SYMLINK - 0)
631 if (result != 0 &&
632 access(fromname, F_OK) == 0 &&
633 !itsdir(fromname)) {
634 const char *s = tofile;
635 register char * symlinkcontents = NULL;
636 while ((s = strchr(s+1, '/')) != NULL)
637 symlinkcontents = ecatalloc(symlinkcontents, "../");
638 symlinkcontents = ecatalloc(symlinkcontents, fromfile);
639
640 result = unlink(toname);
641 if (result != 0 && errno != ENOENT) {
642 const char *e = strerror(errno);
643
644 (void) fprintf(stderr,
645 _("%s: Can't unlink %s: %s\n"),
646 progname, toname, e);
647 (void) exit(EXIT_FAILURE);
648 }
649
650 result = symlink(symlinkcontents, toname);
651 if (result == 0)
652 warning(_("hard link failed, symbolic link used"));
653 ifree(symlinkcontents);
654 }
655 #endif
656 if (result != 0) {
657 const char *e = strerror(errno);
658
659 (void) fprintf(stderr,
660 _("%s: Can't link from %s to %s: %s\n"),
661 progname, fromname, toname, e);
662 (void) exit(EXIT_FAILURE);
663 }
664 }
665 ifree(fromname);
666 ifree(toname);
667 }
668
669 #ifndef INT_MAX
670 #define INT_MAX ((int) (((unsigned)~0)>>1))
671 #endif /* !defined INT_MAX */
672
673 #ifndef INT_MIN
674 #define INT_MIN ((int) ~(((unsigned)~0)>>1))
675 #endif /* !defined INT_MIN */
676
677 /*
678 ** The tz file format currently allows at most 32-bit quantities.
679 ** This restriction should be removed before signed 32-bit values
680 ** wrap around in 2038, but unfortunately this will require a
681 ** change to the tz file format.
682 */
683
684 #define MAX_BITS_IN_FILE 32
685 #define TIME_T_BITS_IN_FILE ((TYPE_BIT(zic_t) < MAX_BITS_IN_FILE) ? \
686 TYPE_BIT(zic_t) : MAX_BITS_IN_FILE)
687
688 static void
689 setboundaries P((void))
690 {
691 register int i;
692
693 if (TYPE_SIGNED(zic_t)) {
694 min_time = -1;
695 for (i = 0; i < TIME_T_BITS_IN_FILE - 1; ++i)
696 min_time *= 2;
697 max_time = -(min_time + 1);
698 if (sflag)
699 min_time = 0;
700 } else {
701 min_time = 0;
702 max_time = 2 - sflag;
703 for (i = 0; i < TIME_T_BITS_IN_FILE - 1; ++i)
704 max_time *= 2;
705 --max_time;
706 }
707 {
708 time_t t;
709
710 t = (time_t) min_time;
711 min_year = TM_YEAR_BASE + gmtime(&t)->tm_year;
712 t = (time_t) max_time;
713 max_year = TM_YEAR_BASE + gmtime(&t)->tm_year;
714 }
715 min_year_representable = min_year;
716 max_year_representable = max_year;
717 }
718
719 static int
720 itsdir(name)
721 const char * const name;
722 {
723 register char * myname;
724 register int accres;
725
726 myname = ecpyalloc(name);
727 myname = ecatalloc(myname, "/.");
728 accres = access(myname, F_OK);
729 ifree(myname);
730 return accres == 0;
731 }
732
733 /*
734 ** Associate sets of rules with zones.
735 */
736
737 /*
738 ** Sort by rule name.
739 */
740
741 static int
742 rcomp(cp1, cp2)
743 const void * cp1;
744 const void * cp2;
745 {
746 return strcmp(((const struct rule *) cp1)->r_name,
747 ((const struct rule *) cp2)->r_name);
748 }
749
750 static void
751 associate P((void))
752 {
753 register struct zone * zp;
754 register struct rule * rp;
755 register int base, out;
756 register int i, j;
757
758 if (nrules != 0) {
759 (void) qsort((void *) rules, (size_t) nrules,
760 (size_t) sizeof *rules, rcomp);
761 for (i = 0; i < nrules - 1; ++i) {
762 if (strcmp(rules[i].r_name,
763 rules[i + 1].r_name) != 0)
764 continue;
765 if (strcmp(rules[i].r_filename,
766 rules[i + 1].r_filename) == 0)
767 continue;
768 eat(rules[i].r_filename, rules[i].r_linenum);
769 warning(_("same rule name in multiple files"));
770 eat(rules[i + 1].r_filename, rules[i + 1].r_linenum);
771 warning(_("same rule name in multiple files"));
772 for (j = i + 2; j < nrules; ++j) {
773 if (strcmp(rules[i].r_name,
774 rules[j].r_name) != 0)
775 break;
776 if (strcmp(rules[i].r_filename,
777 rules[j].r_filename) == 0)
778 continue;
779 if (strcmp(rules[i + 1].r_filename,
780 rules[j].r_filename) == 0)
781 continue;
782 break;
783 }
784 i = j - 1;
785 }
786 }
787 for (i = 0; i < nzones; ++i) {
788 zp = &zones[i];
789 zp->z_rules = NULL;
790 zp->z_nrules = 0;
791 }
792 for (base = 0; base < nrules; base = out) {
793 rp = &rules[base];
794 for (out = base + 1; out < nrules; ++out)
795 if (strcmp(rp->r_name, rules[out].r_name) != 0)
796 break;
797 for (i = 0; i < nzones; ++i) {
798 zp = &zones[i];
799 if (strcmp(zp->z_rule, rp->r_name) != 0)
800 continue;
801 zp->z_rules = rp;
802 zp->z_nrules = out - base;
803 }
804 }
805 for (i = 0; i < nzones; ++i) {
806 zp = &zones[i];
807 if (zp->z_nrules == 0) {
808 /*
809 ** Maybe we have a local standard time offset.
810 */
811 eat(zp->z_filename, zp->z_linenum);
812 zp->z_stdoff = gethms(zp->z_rule, _("unruly zone"),
813 TRUE);
814 /*
815 ** Note, though, that if there's no rule,
816 ** a '%s' in the format is a bad thing.
817 */
818 if (strchr(zp->z_format, '%') != 0)
819 error(_("%s in ruleless zone"));
820 }
821 }
822 if (errors)
823 (void) exit(EXIT_FAILURE);
824 }
825
826 static void
827 infile(name)
828 const char * name;
829 {
830 register FILE * fp;
831 register char ** fields;
832 register char * cp;
833 register const struct lookup * lp;
834 register int nfields;
835 register int wantcont;
836 register int num;
837 char buf[BUFSIZ];
838
839 if (strcmp(name, "-") == 0) {
840 name = _("standard input");
841 fp = stdin;
842 } else if ((fp = fopen(name, "r")) == NULL) {
843 const char *e = strerror(errno);
844
845 (void) fprintf(stderr, _("%s: Can't open %s: %s\n"),
846 progname, name, e);
847 (void) exit(EXIT_FAILURE);
848 }
849 wantcont = FALSE;
850 for (num = 1; ; ++num) {
851 eat(name, num);
852 if (fgets(buf, (int) sizeof buf, fp) != buf)
853 break;
854 cp = strchr(buf, '\n');
855 if (cp == NULL) {
856 error(_("line too long"));
857 (void) exit(EXIT_FAILURE);
858 }
859 *cp = '\0';
860 fields = getfields(buf);
861 nfields = 0;
862 while (fields[nfields] != NULL) {
863 static char nada;
864
865 if (strcmp(fields[nfields], "-") == 0)
866 fields[nfields] = &nada;
867 ++nfields;
868 }
869 if (nfields == 0) {
870 /* nothing to do */
871 } else if (wantcont) {
872 wantcont = inzcont(fields, nfields);
873 } else {
874 lp = byword(fields[0], line_codes);
875 if (lp == NULL)
876 error(_("input line of unknown type"));
877 else switch ((int) (lp->l_value)) {
878 case LC_RULE:
879 inrule(fields, nfields);
880 wantcont = FALSE;
881 break;
882 case LC_ZONE:
883 wantcont = inzone(fields, nfields);
884 break;
885 case LC_LINK:
886 inlink(fields, nfields);
887 wantcont = FALSE;
888 break;
889 case LC_LEAP:
890 if (name != leapsec)
891 (void) fprintf(stderr,
892 _("%s: Leap line in non leap seconds file %s\n"),
893 progname, name);
894 else inleap(fields, nfields);
895 wantcont = FALSE;
896 break;
897 default: /* "cannot happen" */
898 (void) fprintf(stderr,
899 _("%s: panic: Invalid l_value %d\n"),
900 progname, lp->l_value);
901 (void) exit(EXIT_FAILURE);
902 }
903 }
904 ifree((char *) fields);
905 }
906 if (ferror(fp)) {
907 (void) fprintf(stderr, _("%s: Error reading %s\n"),
908 progname, filename);
909 (void) exit(EXIT_FAILURE);
910 }
911 if (fp != stdin && fclose(fp)) {
912 const char *e = strerror(errno);
913
914 (void) fprintf(stderr, _("%s: Error closing %s: %s\n"),
915 progname, filename, e);
916 (void) exit(EXIT_FAILURE);
917 }
918 if (wantcont)
919 error(_("expected continuation line not found"));
920 }
921
922 /*
923 ** Convert a string of one of the forms
924 ** h -h hh:mm -hh:mm hh:mm:ss -hh:mm:ss
925 ** into a number of seconds.
926 ** A null string maps to zero.
927 ** Call error with errstring and return zero on errors.
928 */
929
930 static long
931 gethms(string, errstring, signable)
932 const char * string;
933 const char * const errstring;
934 const int signable;
935 {
936 int hh, mm, ss, sign;
937
938 if (string == NULL || *string == '\0')
939 return 0;
940 if (!signable)
941 sign = 1;
942 else if (*string == '-') {
943 sign = -1;
944 ++string;
945 } else sign = 1;
946 if (sscanf(string, scheck(string, "%d"), &hh) == 1)
947 mm = ss = 0;
948 else if (sscanf(string, scheck(string, "%d:%d"), &hh, &mm) == 2)
949 ss = 0;
950 else if (sscanf(string, scheck(string, "%d:%d:%d"),
951 &hh, &mm, &ss) != 3) {
952 error(errstring);
953 return 0;
954 }
955 if ((hh < 0 || hh >= HOURSPERDAY ||
956 mm < 0 || mm >= MINSPERHOUR ||
957 ss < 0 || ss > SECSPERMIN) &&
958 !(hh == HOURSPERDAY && mm == 0 && ss == 0)) {
959 error(errstring);
960 return 0;
961 }
962 if (noise && hh == HOURSPERDAY)
963 warning(_("24:00 not handled by pre-1998 versions of zic"));
964 return eitol(sign) *
965 (eitol(hh * MINSPERHOUR + mm) *
966 eitol(SECSPERMIN) + eitol(ss));
967 }
968
969 static void
970 inrule(fields, nfields)
971 register char ** const fields;
972 const int nfields;
973 {
974 static struct rule r;
975
976 if (nfields != RULE_FIELDS) {
977 error(_("wrong number of fields on Rule line"));
978 return;
979 }
980 if (*fields[RF_NAME] == '\0') {
981 error(_("nameless rule"));
982 return;
983 }
984 r.r_filename = filename;
985 r.r_linenum = linenum;
986 r.r_stdoff = gethms(fields[RF_STDOFF], _("invalid saved time"), TRUE);
987 rulesub(&r, fields[RF_LOYEAR], fields[RF_HIYEAR], fields[RF_COMMAND],
988 fields[RF_MONTH], fields[RF_DAY], fields[RF_TOD]);
989 r.r_name = ecpyalloc(fields[RF_NAME]);
990 r.r_abbrvar = ecpyalloc(fields[RF_ABBRVAR]);
991 rules = (struct rule *) (void *) erealloc((char *) rules,
992 (int) ((nrules + 1) * sizeof *rules));
993 rules[nrules++] = r;
994 }
995
996 static int
997 inzone(fields, nfields)
998 register char ** const fields;
999 const int nfields;
1000 {
1001 register int i;
1002 static char * buf;
1003
1004 if (nfields < ZONE_MINFIELDS || nfields > ZONE_MAXFIELDS) {
1005 error(_("wrong number of fields on Zone line"));
1006 return FALSE;
1007 }
1008 if (strcmp(fields[ZF_NAME], TZDEFAULT) == 0 && lcltime != NULL) {
1009 buf = erealloc(buf, (int) (132 + strlen(TZDEFAULT)));
1010 (void) sprintf(buf,
1011 _("\"Zone %s\" line and -l option are mutually exclusive"),
1012 TZDEFAULT);
1013 error(buf);
1014 return FALSE;
1015 }
1016 if (strcmp(fields[ZF_NAME], TZDEFRULES) == 0 && psxrules != NULL) {
1017 buf = erealloc(buf, (int) (132 + strlen(TZDEFRULES)));
1018 (void) sprintf(buf,
1019 _("\"Zone %s\" line and -p option are mutually exclusive"),
1020 TZDEFRULES);
1021 error(buf);
1022 return FALSE;
1023 }
1024 for (i = 0; i < nzones; ++i)
1025 if (zones[i].z_name != NULL &&
1026 strcmp(zones[i].z_name, fields[ZF_NAME]) == 0) {
1027 buf = erealloc(buf, (int) (132 +
1028 strlen(fields[ZF_NAME]) +
1029 strlen(zones[i].z_filename)));
1030 (void) sprintf(buf,
1031 _("duplicate zone name %s (file \"%s\", line %d)"),
1032 fields[ZF_NAME],
1033 zones[i].z_filename,
1034 zones[i].z_linenum);
1035 error(buf);
1036 return FALSE;
1037 }
1038 return inzsub(fields, nfields, FALSE);
1039 }
1040
1041 static int
1042 inzcont(fields, nfields)
1043 register char ** const fields;
1044 const int nfields;
1045 {
1046 if (nfields < ZONEC_MINFIELDS || nfields > ZONEC_MAXFIELDS) {
1047 error(_("wrong number of fields on Zone continuation line"));
1048 return FALSE;
1049 }
1050 return inzsub(fields, nfields, TRUE);
1051 }
1052
1053 static int
1054 inzsub(fields, nfields, iscont)
1055 register char ** const fields;
1056 const int nfields;
1057 const int iscont;
1058 {
1059 register char * cp;
1060 static struct zone z;
1061 register int i_gmtoff, i_rule, i_format;
1062 register int i_untilyear, i_untilmonth;
1063 register int i_untilday, i_untiltime;
1064 register int hasuntil;
1065
1066 if (iscont) {
1067 i_gmtoff = ZFC_GMTOFF;
1068 i_rule = ZFC_RULE;
1069 i_format = ZFC_FORMAT;
1070 i_untilyear = ZFC_TILYEAR;
1071 i_untilmonth = ZFC_TILMONTH;
1072 i_untilday = ZFC_TILDAY;
1073 i_untiltime = ZFC_TILTIME;
1074 z.z_name = NULL;
1075 } else {
1076 i_gmtoff = ZF_GMTOFF;
1077 i_rule = ZF_RULE;
1078 i_format = ZF_FORMAT;
1079 i_untilyear = ZF_TILYEAR;
1080 i_untilmonth = ZF_TILMONTH;
1081 i_untilday = ZF_TILDAY;
1082 i_untiltime = ZF_TILTIME;
1083 z.z_name = ecpyalloc(fields[ZF_NAME]);
1084 }
1085 z.z_filename = filename;
1086 z.z_linenum = linenum;
1087 z.z_gmtoff = gethms(fields[i_gmtoff], _("invalid UTC offset"), TRUE);
1088 if ((cp = strchr(fields[i_format], '%')) != 0) {
1089 if (*++cp != 's' || strchr(cp, '%') != 0) {
1090 error(_("invalid abbreviation format"));
1091 return FALSE;
1092 }
1093 }
1094 z.z_rule = ecpyalloc(fields[i_rule]);
1095 z.z_format = ecpyalloc(fields[i_format]);
1096 hasuntil = nfields > i_untilyear;
1097 if (hasuntil) {
1098 z.z_untilrule.r_filename = filename;
1099 z.z_untilrule.r_linenum = linenum;
1100 rulesub(&z.z_untilrule,
1101 fields[i_untilyear],
1102 "only",
1103 "",
1104 (nfields > i_untilmonth) ?
1105 fields[i_untilmonth] : "Jan",
1106 (nfields > i_untilday) ? fields[i_untilday] : "1",
1107 (nfields > i_untiltime) ? fields[i_untiltime] : "0");
1108 z.z_untiltime = rpytime(&z.z_untilrule,
1109 z.z_untilrule.r_loyear);
1110 if (iscont && nzones > 0 &&
1111 z.z_untiltime > min_time &&
1112 z.z_untiltime < max_time &&
1113 zones[nzones - 1].z_untiltime > min_time &&
1114 zones[nzones - 1].z_untiltime < max_time &&
1115 zones[nzones - 1].z_untiltime >= z.z_untiltime) {
1116 error(_("Zone continuation line end time is not after end time of previous line"));
1117 return FALSE;
1118 }
1119 }
1120 zones = (struct zone *) (void *) erealloc((char *) zones,
1121 (int) ((nzones + 1) * sizeof *zones));
1122 zones[nzones++] = z;
1123 /*
1124 ** If there was an UNTIL field on this line,
1125 ** there's more information about the zone on the next line.
1126 */
1127 return hasuntil;
1128 }
1129
1130 static void
1131 inleap(fields, nfields)
1132 register char ** const fields;
1133 const int nfields;
1134 {
1135 register const char * cp;
1136 register const struct lookup * lp;
1137 register int i, j;
1138 int year, month, day;
1139 long dayoff, tod;
1140 zic_t t;
1141
1142 if (nfields != LEAP_FIELDS) {
1143 error(_("wrong number of fields on Leap line"));
1144 return;
1145 }
1146 dayoff = 0;
1147 cp = fields[LP_YEAR];
1148 if (sscanf(cp, scheck(cp, "%d"), &year) != 1) {
1149 /*
1150 * Leapin' Lizards!
1151 */
1152 error(_("invalid leaping year"));
1153 return;
1154 }
1155 j = EPOCH_YEAR;
1156 while (j != year) {
1157 if (year > j) {
1158 i = len_years[isleap(j)];
1159 ++j;
1160 } else {
1161 --j;
1162 i = -len_years[isleap(j)];
1163 }
1164 dayoff = oadd(dayoff, eitol(i));
1165 }
1166 if ((lp = byword(fields[LP_MONTH], mon_names)) == NULL) {
1167 error(_("invalid month name"));
1168 return;
1169 }
1170 month = lp->l_value;
1171 j = TM_JANUARY;
1172 while (j != month) {
1173 i = len_months[isleap(year)][j];
1174 dayoff = oadd(dayoff, eitol(i));
1175 ++j;
1176 }
1177 cp = fields[LP_DAY];
1178 if (sscanf(cp, scheck(cp, "%d"), &day) != 1 ||
1179 day <= 0 || day > len_months[isleap(year)][month]) {
1180 error(_("invalid day of month"));
1181 return;
1182 }
1183 dayoff = oadd(dayoff, eitol(day - 1));
1184 if (dayoff < 0 && !TYPE_SIGNED(zic_t)) {
1185 error(_("time before zero"));
1186 return;
1187 }
1188 if (dayoff < min_time / SECSPERDAY) {
1189 error(_("time too small"));
1190 return;
1191 }
1192 if (dayoff > max_time / SECSPERDAY) {
1193 error(_("time too large"));
1194 return;
1195 }
1196 t = (zic_t) dayoff * SECSPERDAY;
1197 tod = gethms(fields[LP_TIME], _("invalid time of day"), FALSE);
1198 cp = fields[LP_CORR];
1199 {
1200 register int positive;
1201 int count;
1202
1203 if (strcmp(cp, "") == 0) { /* infile() turns "-" into "" */
1204 positive = FALSE;
1205 count = 1;
1206 } else if (strcmp(cp, "--") == 0) {
1207 positive = FALSE;
1208 count = 2;
1209 } else if (strcmp(cp, "+") == 0) {
1210 positive = TRUE;
1211 count = 1;
1212 } else if (strcmp(cp, "++") == 0) {
1213 positive = TRUE;
1214 count = 2;
1215 } else {
1216 error(_("illegal CORRECTION field on Leap line"));
1217 return;
1218 }
1219 if ((lp = byword(fields[LP_ROLL], leap_types)) == NULL) {
1220 error(_("illegal Rolling/Stationary field on Leap line"));
1221 return;
1222 }
1223 leapadd(tadd(t, tod), positive, lp->l_value, count);
1224 }
1225 }
1226
1227 static void
1228 inlink(fields, nfields)
1229 register char ** const fields;
1230 const int nfields;
1231 {
1232 struct link l;
1233
1234 if (nfields != LINK_FIELDS) {
1235 error(_("wrong number of fields on Link line"));
1236 return;
1237 }
1238 if (*fields[LF_FROM] == '\0') {
1239 error(_("blank FROM field on Link line"));
1240 return;
1241 }
1242 if (*fields[LF_TO] == '\0') {
1243 error(_("blank TO field on Link line"));
1244 return;
1245 }
1246 l.l_filename = filename;
1247 l.l_linenum = linenum;
1248 l.l_from = ecpyalloc(fields[LF_FROM]);
1249 l.l_to = ecpyalloc(fields[LF_TO]);
1250 links = (struct link *) (void *) erealloc((char *) links,
1251 (int) ((nlinks + 1) * sizeof *links));
1252 links[nlinks++] = l;
1253 }
1254
1255 static void
1256 rulesub(rp, loyearp, hiyearp, typep, monthp, dayp, timep)
1257 register struct rule * const rp;
1258 const char * const loyearp;
1259 const char * const hiyearp;
1260 const char * const typep;
1261 const char * const monthp;
1262 const char * const dayp;
1263 const char * const timep;
1264 {
1265 register const struct lookup * lp;
1266 register const char * cp;
1267 register char * dp;
1268 register char * ep;
1269
1270 if ((lp = byword(monthp, mon_names)) == NULL) {
1271 error(_("invalid month name"));
1272 return;
1273 }
1274 rp->r_month = lp->l_value;
1275 rp->r_todisstd = FALSE;
1276 rp->r_todisgmt = FALSE;
1277 dp = ecpyalloc(timep);
1278 if (*dp != '\0') {
1279 ep = dp + strlen(dp) - 1;
1280 switch (lowerit(*ep)) {
1281 case 's': /* Standard */
1282 rp->r_todisstd = TRUE;
1283 rp->r_todisgmt = FALSE;
1284 *ep = '\0';
1285 break;
1286 case 'w': /* Wall */
1287 rp->r_todisstd = FALSE;
1288 rp->r_todisgmt = FALSE;
1289 *ep = '\0';
1290 break;
1291 case 'g': /* Greenwich */
1292 case 'u': /* Universal */
1293 case 'z': /* Zulu */
1294 rp->r_todisstd = TRUE;
1295 rp->r_todisgmt = TRUE;
1296 *ep = '\0';
1297 break;
1298 }
1299 }
1300 rp->r_tod = gethms(dp, _("invalid time of day"), FALSE);
1301 ifree(dp);
1302 /*
1303 ** Year work.
1304 */
1305 cp = loyearp;
1306 lp = byword(cp, begin_years);
1307 if (lp != NULL) switch ((int) lp->l_value) {
1308 case YR_MINIMUM:
1309 rp->r_loyear = INT_MIN;
1310 break;
1311 case YR_MAXIMUM:
1312 rp->r_loyear = INT_MAX;
1313 break;
1314 default: /* "cannot happen" */
1315 (void) fprintf(stderr,
1316 _("%s: panic: Invalid l_value %d\n"),
1317 progname, lp->l_value);
1318 (void) exit(EXIT_FAILURE);
1319 } else if (sscanf(cp, scheck(cp, "%d"), &rp->r_loyear) != 1) {
1320 error(_("invalid starting year"));
1321 return;
1322 } else if (noise) {
1323 if (rp->r_loyear < min_year_representable)
1324 warning(_("starting year too low to be represented"));
1325 else if (rp->r_loyear > max_year_representable)
1326 warning(_("starting year too high to be represented"));
1327 }
1328 cp = hiyearp;
1329 if ((lp = byword(cp, end_years)) != NULL) switch ((int) lp->l_value) {
1330 case YR_MINIMUM:
1331 rp->r_hiyear = INT_MIN;
1332 break;
1333 case YR_MAXIMUM:
1334 rp->r_hiyear = INT_MAX;
1335 break;
1336 case YR_ONLY:
1337 rp->r_hiyear = rp->r_loyear;
1338 break;
1339 default: /* "cannot happen" */
1340 (void) fprintf(stderr,
1341 _("%s: panic: Invalid l_value %d\n"),
1342 progname, lp->l_value);
1343 (void) exit(EXIT_FAILURE);
1344 } else if (sscanf(cp, scheck(cp, "%d"), &rp->r_hiyear) != 1) {
1345 error(_("invalid ending year"));
1346 return;
1347 } else if (noise) {
1348 if (rp->r_loyear < min_year_representable)
1349 warning(_("ending year too low to be represented"));
1350 else if (rp->r_loyear > max_year_representable)
1351 warning(_("ending year too high to be represented"));
1352 }
1353 if (rp->r_loyear > rp->r_hiyear) {
1354 error(_("starting year greater than ending year"));
1355 return;
1356 }
1357 if (*typep == '\0')
1358 rp->r_yrtype = NULL;
1359 else {
1360 if (rp->r_loyear == rp->r_hiyear) {
1361 error(_("typed single year"));
1362 return;
1363 }
1364 rp->r_yrtype = ecpyalloc(typep);
1365 }
1366 if (rp->r_loyear < min_year && rp->r_loyear > 0)
1367 min_year = rp->r_loyear;
1368 /*
1369 ** Day work.
1370 ** Accept things such as:
1371 ** 1
1372 ** last-Sunday
1373 ** Sun<=20
1374 ** Sun>=7
1375 */
1376 dp = ecpyalloc(dayp);
1377 if ((lp = byword(dp, lasts)) != NULL) {
1378 rp->r_dycode = DC_DOWLEQ;
1379 rp->r_wday = lp->l_value;
1380 rp->r_dayofmonth = len_months[1][rp->r_month];
1381 } else {
1382 if ((ep = strchr(dp, '<')) != 0)
1383 rp->r_dycode = DC_DOWLEQ;
1384 else if ((ep = strchr(dp, '>')) != 0)
1385 rp->r_dycode = DC_DOWGEQ;
1386 else {
1387 ep = dp;
1388 rp->r_dycode = DC_DOM;
1389 }
1390 if (rp->r_dycode != DC_DOM) {
1391 *ep++ = 0;
1392 if (*ep++ != '=') {
1393 error(_("invalid day of month"));
1394 ifree(dp);
1395 return;
1396 }
1397 if ((lp = byword(dp, wday_names)) == NULL) {
1398 error(_("invalid weekday name"));
1399 ifree(dp);
1400 return;
1401 }
1402 rp->r_wday = lp->l_value;
1403 }
1404 if (sscanf(ep, scheck(ep, "%d"), &rp->r_dayofmonth) != 1 ||
1405 rp->r_dayofmonth <= 0 ||
1406 (rp->r_dayofmonth > len_months[1][rp->r_month])) {
1407 error(_("invalid day of month"));
1408 ifree(dp);
1409 return;
1410 }
1411 }
1412 ifree(dp);
1413 }
1414
1415 static void
1416 convert(val, buf)
1417 const long val;
1418 char * const buf;
1419 {
1420 register int i;
1421 register long shift;
1422
1423 for (i = 0, shift = 24; i < 4; ++i, shift -= 8)
1424 buf[i] = val >> shift;
1425 }
1426
1427 static void
1428 puttzcode(val, fp)
1429 const long val;
1430 FILE * const fp;
1431 {
1432 char buf[4];
1433
1434 convert(val, buf);
1435 (void) fwrite((void *) buf, (size_t) sizeof buf, (size_t) 1, fp);
1436 }
1437
1438 static int
1439 atcomp(avp, bvp)
1440 void * avp;
1441 void * bvp;
1442 {
1443 if (((struct attype *) avp)->at < ((struct attype *) bvp)->at)
1444 return -1;
1445 else if (((struct attype *) avp)->at > ((struct attype *) bvp)->at)
1446 return 1;
1447 else return 0;
1448 }
1449
1450 static void
1451 writezone(name)
1452 const char * const name;
1453 {
1454 register FILE * fp;
1455 register int i, j;
1456 static char * fullname;
1457 static struct tzhead tzh;
1458 zic_t ats[TZ_MAX_TIMES];
1459 unsigned char types[TZ_MAX_TIMES];
1460
1461 /*
1462 ** Sort.
1463 */
1464 if (timecnt > 1)
1465 (void) qsort((void *) attypes, (size_t) timecnt,
1466 (size_t) sizeof *attypes, atcomp);
1467 /*
1468 ** Optimize.
1469 */
1470 {
1471 int fromi;
1472 int toi;
1473
1474 toi = 0;
1475 fromi = 0;
1476 while (fromi < timecnt && attypes[fromi].at < min_time)
1477 ++fromi;
1478 if (isdsts[0] == 0)
1479 while (fromi < timecnt && attypes[fromi].type == 0)
1480 ++fromi; /* handled by default rule */
1481 for ( ; fromi < timecnt; ++fromi) {
1482 if (toi != 0
1483 && ((attypes[fromi].at
1484 + gmtoffs[attypes[toi - 1].type])
1485 <= (attypes[toi - 1].at
1486 + gmtoffs[toi == 1 ? 0
1487 : attypes[toi - 2].type]))) {
1488 attypes[toi - 1].type = attypes[fromi].type;
1489 continue;
1490 }
1491 if (toi == 0 ||
1492 attypes[toi - 1].type != attypes[fromi].type)
1493 attypes[toi++] = attypes[fromi];
1494 }
1495 timecnt = toi;
1496 }
1497 /*
1498 ** Transfer.
1499 */
1500 for (i = 0; i < timecnt; ++i) {
1501 ats[i] = attypes[i].at;
1502 types[i] = attypes[i].type;
1503 }
1504 fullname = erealloc(fullname,
1505 (int) (strlen(directory) + 1 + strlen(name) + 1));
1506 (void) sprintf(fullname, "%s/%s", directory, name);
1507 /*
1508 ** Remove old file, if any, to snap links.
1509 */
1510 if (!itsdir(fullname) && remove(fullname) != 0 && errno != ENOENT) {
1511 const char *e = strerror(errno);
1512
1513 (void) fprintf(stderr, _("%s: Can't remove %s: %s\n"),
1514 progname, fullname, e);
1515 (void) exit(EXIT_FAILURE);
1516 }
1517 if ((fp = fopen(fullname, "wb")) == NULL) {
1518 if (mkdirs(fullname) != 0)
1519 (void) exit(EXIT_FAILURE);
1520 if ((fp = fopen(fullname, "wb")) == NULL) {
1521 const char *e = strerror(errno);
1522
1523 (void) fprintf(stderr, _("%s: Can't create %s: %s\n"),
1524 progname, fullname, e);
1525 (void) exit(EXIT_FAILURE);
1526 }
1527 }
1528 convert(eitol(typecnt), tzh.tzh_ttisgmtcnt);
1529 convert(eitol(typecnt), tzh.tzh_ttisstdcnt);
1530 convert(eitol(leapcnt), tzh.tzh_leapcnt);
1531 convert(eitol(timecnt), tzh.tzh_timecnt);
1532 convert(eitol(typecnt), tzh.tzh_typecnt);
1533 convert(eitol(charcnt), tzh.tzh_charcnt);
1534 (void) strncpy(tzh.tzh_magic, TZ_MAGIC, sizeof tzh.tzh_magic);
1535 #define DO(field) (void) fwrite((void *) tzh.field, (size_t) sizeof tzh.field, (size_t) 1, fp)
1536 DO(tzh_magic);
1537 DO(tzh_reserved);
1538 DO(tzh_ttisgmtcnt);
1539 DO(tzh_ttisstdcnt);
1540 DO(tzh_leapcnt);
1541 DO(tzh_timecnt);
1542 DO(tzh_typecnt);
1543 DO(tzh_charcnt);
1544 #undef DO
1545 for (i = 0; i < timecnt; ++i) {
1546 j = leapcnt;
1547 while (--j >= 0)
1548 if (ats[i] >= trans[j]) {
1549 ats[i] = tadd(ats[i], corr[j]);
1550 break;
1551 }
1552 puttzcode((long) ats[i], fp);
1553 }
1554 if (timecnt > 0)
1555 (void) fwrite((void *) types, (size_t) sizeof types[0],
1556 (size_t) timecnt, fp);
1557 for (i = 0; i < typecnt; ++i) {
1558 puttzcode((long) gmtoffs[i], fp);
1559 (void) putc(isdsts[i], fp);
1560 (void) putc(abbrinds[i], fp);
1561 }
1562 if (charcnt != 0)
1563 (void) fwrite((void *) chars, (size_t) sizeof chars[0],
1564 (size_t) charcnt, fp);
1565 for (i = 0; i < leapcnt; ++i) {
1566 if (roll[i]) {
1567 if (timecnt == 0 || trans[i] < ats[0]) {
1568 j = 0;
1569 while (isdsts[j])
1570 if (++j >= typecnt) {
1571 j = 0;
1572 break;
1573 }
1574 } else {
1575 j = 1;
1576 while (j < timecnt && trans[i] >= ats[j])
1577 ++j;
1578 j = types[j - 1];
1579 }
1580 puttzcode((long) tadd(trans[i], -gmtoffs[j]), fp);
1581 } else puttzcode((long) trans[i], fp);
1582 puttzcode((long) corr[i], fp);
1583 }
1584 for (i = 0; i < typecnt; ++i)
1585 (void) putc(ttisstds[i], fp);
1586 for (i = 0; i < typecnt; ++i)
1587 (void) putc(ttisgmts[i], fp);
1588 if (ferror(fp) || fclose(fp)) {
1589 (void) fprintf(stderr, _("%s: Error writing %s\n"),
1590 progname, fullname);
1591 (void) exit(EXIT_FAILURE);
1592 }
1593 }
1594
1595 static void
1596 doabbr(abbr, format, letters, isdst)
1597 char * const abbr;
1598 const char * const format;
1599 const char * const letters;
1600 const int isdst;
1601 {
1602 if (strchr(format, '/') == NULL) {
1603 if (letters == NULL)
1604 (void) strcpy(abbr, format);
1605 else (void) sprintf(abbr, format, letters);
1606 } else if (isdst)
1607 (void) strcpy(abbr, strchr(format, '/') + 1);
1608 else {
1609 (void) strcpy(abbr, format);
1610 *strchr(abbr, '/') = '\0';
1611 }
1612 }
1613
1614 static void
1615 outzone(zpfirst, zonecount)
1616 const struct zone * const zpfirst;
1617 const int zonecount;
1618 {
1619 register const struct zone * zp;
1620 register struct rule * rp;
1621 register int i, j;
1622 register int usestart, useuntil;
1623 register zic_t starttime, untiltime;
1624 register long gmtoff;
1625 register long stdoff;
1626 register int year;
1627 register long startoff;
1628 register int startttisstd;
1629 register int startttisgmt;
1630 register int type;
1631 char startbuf[BUFSIZ];
1632
1633 INITIALIZE(untiltime);
1634 INITIALIZE(starttime);
1635 /*
1636 ** Now. . .finally. . .generate some useful data!
1637 */
1638 timecnt = 0;
1639 typecnt = 0;
1640 charcnt = 0;
1641 /*
1642 ** Thanks to Earl Chew (earl@dnd.icp.nec.com.au)
1643 ** for noting the need to unconditionally initialize startttisstd.
1644 */
1645 startttisstd = FALSE;
1646 startttisgmt = FALSE;
1647 for (i = 0; i < zonecount; ++i) {
1648 /*
1649 ** A guess that may well be corrected later.
1650 */
1651 stdoff = 0;
1652 zp = &zpfirst[i];
1653 usestart = i > 0 && (zp - 1)->z_untiltime > min_time;
1654 useuntil = i < (zonecount - 1);
1655 if (useuntil && zp->z_untiltime <= min_time)
1656 continue;
1657 gmtoff = zp->z_gmtoff;
1658 eat(zp->z_filename, zp->z_linenum);
1659 *startbuf = '\0';
1660 startoff = zp->z_gmtoff;
1661 if (zp->z_nrules == 0) {
1662 stdoff = zp->z_stdoff;
1663 doabbr(startbuf, zp->z_format,
1664 (char *) NULL, stdoff != 0);
1665 type = addtype(oadd(zp->z_gmtoff, stdoff),
1666 startbuf, stdoff != 0, startttisstd,
1667 startttisgmt);
1668 if (usestart) {
1669 addtt(starttime, type);
1670 usestart = FALSE;
1671 } else if (stdoff != 0)
1672 addtt(min_time, type);
1673 } else for (year = min_year; year <= max_year; ++year) {
1674 if (useuntil && year > zp->z_untilrule.r_hiyear)
1675 break;
1676 /*
1677 ** Mark which rules to do in the current year.
1678 ** For those to do, calculate rpytime(rp, year);
1679 */
1680 for (j = 0; j < zp->z_nrules; ++j) {
1681 rp = &zp->z_rules[j];
1682 eats(zp->z_filename, zp->z_linenum,
1683 rp->r_filename, rp->r_linenum);
1684 rp->r_todo = year >= rp->r_loyear &&
1685 year <= rp->r_hiyear &&
1686 yearistype(year, rp->r_yrtype);
1687 if (rp->r_todo)
1688 rp->r_temp = rpytime(rp, year);
1689 }
1690 for ( ; ; ) {
1691 register int k;
1692 register zic_t jtime, ktime;
1693 register long offset;
1694 char buf[BUFSIZ];
1695
1696 INITIALIZE(ktime);
1697 if (useuntil) {
1698 /*
1699 ** Turn untiltime into UTC
1700 ** assuming the current gmtoff and
1701 ** stdoff values.
1702 */
1703 untiltime = zp->z_untiltime;
1704 if (!zp->z_untilrule.r_todisgmt)
1705 untiltime = tadd(untiltime,
1706 -gmtoff);
1707 if (!zp->z_untilrule.r_todisstd)
1708 untiltime = tadd(untiltime,
1709 -stdoff);
1710 }
1711 /*
1712 ** Find the rule (of those to do, if any)
1713 ** that takes effect earliest in the year.
1714 */
1715 k = -1;
1716 for (j = 0; j < zp->z_nrules; ++j) {
1717 rp = &zp->z_rules[j];
1718 if (!rp->r_todo)
1719 continue;
1720 eats(zp->z_filename, zp->z_linenum,
1721 rp->r_filename, rp->r_linenum);
1722 offset = rp->r_todisgmt ? 0 : gmtoff;
1723 if (!rp->r_todisstd)
1724 offset = oadd(offset, stdoff);
1725 jtime = rp->r_temp;
1726 if (jtime == min_time ||
1727 jtime == max_time)
1728 continue;
1729 jtime = tadd(jtime, -offset);
1730 if (k < 0 || jtime < ktime) {
1731 k = j;
1732 ktime = jtime;
1733 }
1734 }
1735 if (k < 0)
1736 break; /* go on to next year */
1737 rp = &zp->z_rules[k];
1738 rp->r_todo = FALSE;
1739 if (useuntil && ktime >= untiltime)
1740 break;
1741 stdoff = rp->r_stdoff;
1742 if (usestart && ktime == starttime)
1743 usestart = FALSE;
1744 if (usestart) {
1745 if (ktime < starttime) {
1746 startoff = oadd(zp->z_gmtoff,
1747 stdoff);
1748 doabbr(startbuf, zp->z_format,
1749 rp->r_abbrvar,
1750 rp->r_stdoff != 0);
1751 continue;
1752 }
1753 if (*startbuf == '\0' &&
1754 startoff == oadd(zp->z_gmtoff,
1755 stdoff)) {
1756 doabbr(startbuf, zp->z_format,
1757 rp->r_abbrvar,
1758 rp->r_stdoff != 0);
1759 }
1760 }
1761 eats(zp->z_filename, zp->z_linenum,
1762 rp->r_filename, rp->r_linenum);
1763 doabbr(buf, zp->z_format, rp->r_abbrvar,
1764 rp->r_stdoff != 0);
1765 offset = oadd(zp->z_gmtoff, rp->r_stdoff);
1766 type = addtype(offset, buf, rp->r_stdoff != 0,
1767 rp->r_todisstd, rp->r_todisgmt);
1768 addtt(ktime, type);
1769 }
1770 }
1771 if (usestart) {
1772 if (*startbuf == '\0' &&
1773 zp->z_format != NULL &&
1774 strchr(zp->z_format, '%') == NULL &&
1775 strchr(zp->z_format, '/') == NULL)
1776 (void) strcpy(startbuf, zp->z_format);
1777 eat(zp->z_filename, zp->z_linenum);
1778 if (*startbuf == '\0')
1779 error(_("can't determine time zone abbreviation to use just after until time"));
1780 else addtt(starttime,
1781 addtype(startoff, startbuf,
1782 startoff != zp->z_gmtoff,
1783 startttisstd,
1784 startttisgmt));
1785 }
1786 /*
1787 ** Now we may get to set starttime for the next zone line.
1788 */
1789 if (useuntil) {
1790 startttisstd = zp->z_untilrule.r_todisstd;
1791 startttisgmt = zp->z_untilrule.r_todisgmt;
1792 starttime = zp->z_untiltime;
1793 if (!startttisstd)
1794 starttime = tadd(starttime, -stdoff);
1795 if (!startttisgmt)
1796 starttime = tadd(starttime, -gmtoff);
1797 }
1798 }
1799 writezone(zpfirst->z_name);
1800 }
1801
1802 static void
1803 addtt(starttime, type)
1804 const zic_t starttime;
1805 int type;
1806 {
1807 if (starttime <= min_time ||
1808 (timecnt == 1 && attypes[0].at < min_time)) {
1809 gmtoffs[0] = gmtoffs[type];
1810 isdsts[0] = isdsts[type];
1811 ttisstds[0] = ttisstds[type];
1812 ttisgmts[0] = ttisgmts[type];
1813 if (abbrinds[type] != 0)
1814 (void) strcpy(chars, &chars[abbrinds[type]]);
1815 abbrinds[0] = 0;
1816 charcnt = strlen(chars) + 1;
1817 typecnt = 1;
1818 timecnt = 0;
1819 type = 0;
1820 }
1821 if (timecnt >= TZ_MAX_TIMES) {
1822 error(_("too many transitions?!"));
1823 (void) exit(EXIT_FAILURE);
1824 }
1825 attypes[timecnt].at = starttime;
1826 attypes[timecnt].type = type;
1827 ++timecnt;
1828 }
1829
1830 static int
1831 addtype(gmtoff, abbr, isdst, ttisstd, ttisgmt)
1832 const long gmtoff;
1833 const char * const abbr;
1834 const int isdst;
1835 const int ttisstd;
1836 const int ttisgmt;
1837 {
1838 register int i, j;
1839
1840 if (isdst != TRUE && isdst != FALSE) {
1841 error(_("internal error - addtype called with bad isdst"));
1842 (void) exit(EXIT_FAILURE);
1843 }
1844 if (ttisstd != TRUE && ttisstd != FALSE) {
1845 error(_("internal error - addtype called with bad ttisstd"));
1846 (void) exit(EXIT_FAILURE);
1847 }
1848 if (ttisgmt != TRUE && ttisgmt != FALSE) {
1849 error(_("internal error - addtype called with bad ttisgmt"));
1850 (void) exit(EXIT_FAILURE);
1851 }
1852 /*
1853 ** See if there's already an entry for this zone type.
1854 ** If so, just return its index.
1855 */
1856 for (i = 0; i < typecnt; ++i) {
1857 if (gmtoff == gmtoffs[i] && isdst == isdsts[i] &&
1858 strcmp(abbr, &chars[abbrinds[i]]) == 0 &&
1859 ttisstd == ttisstds[i] &&
1860 ttisgmt == ttisgmts[i])
1861 return i;
1862 }
1863 /*
1864 ** There isn't one; add a new one, unless there are already too
1865 ** many.
1866 */
1867 if (typecnt >= TZ_MAX_TYPES) {
1868 error(_("too many local time types"));
1869 (void) exit(EXIT_FAILURE);
1870 }
1871 gmtoffs[i] = gmtoff;
1872 isdsts[i] = isdst;
1873 ttisstds[i] = ttisstd;
1874 ttisgmts[i] = ttisgmt;
1875
1876 for (j = 0; j < charcnt; ++j)
1877 if (strcmp(&chars[j], abbr) == 0)
1878 break;
1879 if (j == charcnt)
1880 newabbr(abbr);
1881 abbrinds[i] = j;
1882 ++typecnt;
1883 return i;
1884 }
1885
1886 static void
1887 leapadd(t, positive, rolling, count)
1888 const zic_t t;
1889 const int positive;
1890 const int rolling;
1891 int count;
1892 {
1893 register int i, j;
1894
1895 if (leapcnt + (positive ? count : 1) > TZ_MAX_LEAPS) {
1896 error(_("too many leap seconds"));
1897 (void) exit(EXIT_FAILURE);
1898 }
1899 for (i = 0; i < leapcnt; ++i)
1900 if (t <= trans[i]) {
1901 if (t == trans[i]) {
1902 error(_("repeated leap second moment"));
1903 (void) exit(EXIT_FAILURE);
1904 }
1905 break;
1906 }
1907 do {
1908 for (j = leapcnt; j > i; --j) {
1909 trans[j] = trans[j - 1];
1910 corr[j] = corr[j - 1];
1911 roll[j] = roll[j - 1];
1912 }
1913 trans[i] = t;
1914 corr[i] = positive ? 1L : eitol(-count);
1915 roll[i] = rolling;
1916 ++leapcnt;
1917 } while (positive && --count != 0);
1918 }
1919
1920 static void
1921 adjleap P((void))
1922 {
1923 register int i;
1924 register long last = 0;
1925
1926 /*
1927 ** propagate leap seconds forward
1928 */
1929 for (i = 0; i < leapcnt; ++i) {
1930 trans[i] = tadd(trans[i], last);
1931 last = corr[i] += last;
1932 }
1933 }
1934
1935 static int
1936 yearistype(year, type)
1937 const int year;
1938 const char * const type;
1939 {
1940 static char * buf;
1941 int result;
1942
1943 if (type == NULL || *type == '\0')
1944 return TRUE;
1945 buf = erealloc(buf, (int) (132 + strlen(yitcommand) + strlen(type)));
1946 (void) sprintf(buf, "%s %d %s", yitcommand, year, type);
1947 result = system(buf);
1948 if (WIFEXITED(result)) switch (WEXITSTATUS(result)) {
1949 case 0:
1950 return TRUE;
1951 case 1:
1952 return FALSE;
1953 }
1954 error(_("Wild result from command execution"));
1955 (void) fprintf(stderr, _("%s: command was '%s', result was %d\n"),
1956 progname, buf, result);
1957 for ( ; ; )
1958 (void) exit(EXIT_FAILURE);
1959 }
1960
1961 static int
1962 lowerit(a)
1963 int a;
1964 {
1965 a = (unsigned char) a;
1966 return (isascii(a) && isupper(a)) ? tolower(a) : a;
1967 }
1968
1969 static int
1970 ciequal(ap, bp) /* case-insensitive equality */
1971 register const char * ap;
1972 register const char * bp;
1973 {
1974 while (lowerit(*ap) == lowerit(*bp++))
1975 if (*ap++ == '\0')
1976 return TRUE;
1977 return FALSE;
1978 }
1979
1980 static int
1981 itsabbr(abbr, word)
1982 register const char * abbr;
1983 register const char * word;
1984 {
1985 if (lowerit(*abbr) != lowerit(*word))
1986 return FALSE;
1987 ++word;
1988 while (*++abbr != '\0')
1989 do {
1990 if (*word == '\0')
1991 return FALSE;
1992 } while (lowerit(*word++) != lowerit(*abbr));
1993 return TRUE;
1994 }
1995
1996 static const struct lookup *
1997 byword(word, table)
1998 register const char * const word;
1999 register const struct lookup * const table;
2000 {
2001 register const struct lookup * foundlp;
2002 register const struct lookup * lp;
2003
2004 if (word == NULL || table == NULL)
2005 return NULL;
2006 /*
2007 ** Look for exact match.
2008 */
2009 for (lp = table; lp->l_word != NULL; ++lp)
2010 if (ciequal(word, lp->l_word))
2011 return lp;
2012 /*
2013 ** Look for inexact match.
2014 */
2015 foundlp = NULL;
2016 for (lp = table; lp->l_word != NULL; ++lp)
2017 if (itsabbr(word, lp->l_word)) {
2018 if (foundlp == NULL)
2019 foundlp = lp;
2020 else return NULL; /* multiple inexact matches */
2021 }
2022 return foundlp;
2023 }
2024
2025 static char **
2026 getfields(cp)
2027 register char * cp;
2028 {
2029 register char * dp;
2030 register char ** array;
2031 register int nsubs;
2032
2033 if (cp == NULL)
2034 return NULL;
2035 array = (char **) (void *)
2036 emalloc((int) ((strlen(cp) + 1) * sizeof *array));
2037 nsubs = 0;
2038 for ( ; ; ) {
2039 while (isascii(*cp) && isspace((unsigned char) *cp))
2040 ++cp;
2041 if (*cp == '\0' || *cp == '#')
2042 break;
2043 array[nsubs++] = dp = cp;
2044 do {
2045 if ((*dp = *cp++) != '"')
2046 ++dp;
2047 else while ((*dp = *cp++) != '"')
2048 if (*dp != '\0')
2049 ++dp;
2050 else error(_("Odd number of quotation marks"));
2051 } while (*cp != '\0' && *cp != '#' &&
2052 (!isascii(*cp) || !isspace((unsigned char) *cp)));
2053 if (isascii(*cp) && isspace((unsigned char) *cp))
2054 ++cp;
2055 *dp = '\0';
2056 }
2057 array[nsubs] = NULL;
2058 return array;
2059 }
2060
2061 static long
2062 oadd(t1, t2)
2063 const long t1;
2064 const long t2;
2065 {
2066 register long t;
2067
2068 t = t1 + t2;
2069 if ((t2 > 0 && t <= t1) || (t2 < 0 && t >= t1)) {
2070 error(_("time overflow"));
2071 (void) exit(EXIT_FAILURE);
2072 }
2073 return t;
2074 }
2075
2076 static zic_t
2077 tadd(t1, t2)
2078 const zic_t t1;
2079 const long t2;
2080 {
2081 register zic_t t;
2082
2083 if (t1 == max_time && t2 > 0)
2084 return max_time;
2085 if (t1 == min_time && t2 < 0)
2086 return min_time;
2087 t = t1 + t2;
2088 if ((t2 > 0 && t <= t1) || (t2 < 0 && t >= t1)) {
2089 error(_("time overflow"));
2090 (void) exit(EXIT_FAILURE);
2091 }
2092 return t;
2093 }
2094
2095 /*
2096 ** Given a rule, and a year, compute the date - in seconds since January 1,
2097 ** 1970, 00:00 LOCAL time - in that year that the rule refers to.
2098 */
2099
2100 static zic_t
2101 rpytime(rp, wantedy)
2102 register const struct rule * const rp;
2103 register const int wantedy;
2104 {
2105 register int y, m, i;
2106 register long dayoff; /* with a nod to Margaret O. */
2107 register zic_t t;
2108
2109 if (wantedy == INT_MIN)
2110 return min_time;
2111 if (wantedy == INT_MAX)
2112 return max_time;
2113 dayoff = 0;
2114 m = TM_JANUARY;
2115 y = EPOCH_YEAR;
2116 while (wantedy != y) {
2117 if (wantedy > y) {
2118 i = len_years[isleap(y)];
2119 ++y;
2120 } else {
2121 --y;
2122 i = -len_years[isleap(y)];
2123 }
2124 dayoff = oadd(dayoff, eitol(i));
2125 }
2126 while (m != rp->r_month) {
2127 i = len_months[isleap(y)][m];
2128 dayoff = oadd(dayoff, eitol(i));
2129 ++m;
2130 }
2131 i = rp->r_dayofmonth;
2132 if (m == TM_FEBRUARY && i == 29 && !isleap(y)) {
2133 if (rp->r_dycode == DC_DOWLEQ)
2134 --i;
2135 else {
2136 error(_("use of 2/29 in non leap-year"));
2137 (void) exit(EXIT_FAILURE);
2138 }
2139 }
2140 --i;
2141 dayoff = oadd(dayoff, eitol(i));
2142 if (rp->r_dycode == DC_DOWGEQ || rp->r_dycode == DC_DOWLEQ) {
2143 register long wday;
2144
2145 #define LDAYSPERWEEK ((long) DAYSPERWEEK)
2146 wday = eitol(EPOCH_WDAY);
2147 /*
2148 ** Don't trust mod of negative numbers.
2149 */
2150 if (dayoff >= 0)
2151 wday = (wday + dayoff) % LDAYSPERWEEK;
2152 else {
2153 wday -= ((-dayoff) % LDAYSPERWEEK);
2154 if (wday < 0)
2155 wday += LDAYSPERWEEK;
2156 }
2157 while (wday != eitol(rp->r_wday))
2158 if (rp->r_dycode == DC_DOWGEQ) {
2159 dayoff = oadd(dayoff, (long) 1);
2160 if (++wday >= LDAYSPERWEEK)
2161 wday = 0;
2162 ++i;
2163 } else {
2164 dayoff = oadd(dayoff, (long) -1);
2165 if (--wday < 0)
2166 wday = LDAYSPERWEEK - 1;
2167 --i;
2168 }
2169 if (i < 0 || i >= len_months[isleap(y)][m]) {
2170 if (noise)
2171 warning(_("rule goes past start/end of month--will not work with pre-2004 versions of zic"));
2172 }
2173 }
2174 if (dayoff < 0 && !TYPE_SIGNED(zic_t))
2175 return min_time;
2176 if (dayoff < min_time / SECSPERDAY)
2177 return min_time;
2178 if (dayoff > max_time / SECSPERDAY)
2179 return max_time;
2180 t = (zic_t) dayoff * SECSPERDAY;
2181 return tadd(t, rp->r_tod);
2182 }
2183
2184 static void
2185 newabbr(string)
2186 const char * const string;
2187 {
2188 register int i;
2189
2190 i = strlen(string) + 1;
2191 if (charcnt + i > TZ_MAX_CHARS) {
2192 error(_("too many, or too long, time zone abbreviations"));
2193 (void) exit(EXIT_FAILURE);
2194 }
2195 (void) strcpy(&chars[charcnt], string);
2196 charcnt += eitol(i);
2197 }
2198
2199 static int
2200 mkdirs(argname)
2201 char * const argname;
2202 {
2203 register char * name;
2204 register char * cp;
2205
2206 if (argname == NULL || *argname == '\0')
2207 return 0;
2208 cp = name = ecpyalloc(argname);
2209 while ((cp = strchr(cp + 1, '/')) != 0) {
2210 *cp = '\0';
2211 #ifndef unix
2212 /*
2213 ** DOS drive specifier?
2214 */
2215 if (isalpha((unsigned char) name[0]) &&
2216 name[1] == ':' && name[2] == '\0') {
2217 *cp = '/';
2218 continue;
2219 }
2220 #endif /* !defined unix */
2221 if (!itsdir(name)) {
2222 /*
2223 ** It doesn't seem to exist, so we try to create it.
2224 ** Creation may fail because of the directory being
2225 ** created by some other multiprocessor, so we get
2226 ** to do extra checking.
2227 */
2228 if (mkdir(name, MKDIR_UMASK) != 0) {
2229 const char *e = strerror(errno);
2230
2231 if (errno != EEXIST || !itsdir(name)) {
2232 (void) fprintf(stderr,
2233 _("%s: Can't create directory %s: %s\n"),
2234 progname, name, e);
2235 ifree(name);
2236 return -1;
2237 }
2238 }
2239 }
2240 *cp = '/';
2241 }
2242 ifree(name);
2243 return 0;
2244 }
2245
2246 static long
2247 eitol(i)
2248 const int i;
2249 {
2250 long l;
2251
2252 l = i;
2253 if ((i < 0 && l >= 0) || (i == 0 && l != 0) || (i > 0 && l <= 0)) {
2254 (void) fprintf(stderr,
2255 _("%s: %d did not sign extend correctly\n"),
2256 progname, i);
2257 (void) exit(EXIT_FAILURE);
2258 }
2259 return l;
2260 }
2261
2262 /*
2263 ** UNIX was a registered trademark of The Open Group in 2003.
2264 */
sources.redhat.com git mirror of glibc CVS