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2005-07-28 Thomas Schwinge <schwinge@nic-nac-project.de>
[glibc.git] / timezone / zic.c
blobfb86fc69d2184c8f99dd5396c981af2da91b8419
1 static char elsieid[] = "@(#)zic.c 7.122";
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
142 static char * strerror P((int));
143 #endif /* !HAVE_STRERROR */
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
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 */
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 \
452 [ --version ] [ -s ] [ -v ] [ -l localtime ] [ -p posixrules ] \\\n\
453 \t[ -d directory ] [ -L leapseconds ] [ -y yearistype ] [ filename ... ]\n"),
454 progname, progname);
455 (void) exit(EXIT_FAILURE);
456 }
457
458 static const char * psxrules;
459 static const char * lcltime;
460 static const char * directory;
461 static const char * leapsec;
462 static const char * yitcommand;
463 static int sflag = FALSE;
464
465 int
466 main(argc, argv)
467 int argc;
468 char * argv[];
469 {
470 register int i;
471 register int j;
472 register int c;
473
474 #ifdef unix
475 (void) umask(umask(S_IWGRP | S_IWOTH) | (S_IWGRP | S_IWOTH));
476 #endif /* defined unix */
477 #if HAVE_GETTEXT
478 (void) setlocale(LC_CTYPE, "");
479 (void) setlocale(LC_MESSAGES, "");
480 #ifdef TZ_DOMAINDIR
481 (void) bindtextdomain(TZ_DOMAIN, TZ_DOMAINDIR);
482 #endif /* defined TEXTDOMAINDIR */
483 (void) textdomain(TZ_DOMAIN);
484 #endif /* HAVE_GETTEXT */
485 progname = argv[0];
486 for (i = 1; i < argc; ++i)
487 if (strcmp(argv[i], "--version") == 0) {
488 (void) printf("%s\n", elsieid);
489 (void) exit(EXIT_SUCCESS);
490 }
491 while ((c = getopt(argc, argv, "d:l:p:L:vsy:")) != EOF && c != -1)
492 switch (c) {
493 default:
494 usage();
495 case 'd':
496 if (directory == NULL)
497 directory = optarg;
498 else {
499 (void) fprintf(stderr,
500 _("%s: More than one -d option specified\n"),
501 progname);
502 (void) exit(EXIT_FAILURE);
503 }
504 break;
505 case 'l':
506 if (lcltime == NULL)
507 lcltime = optarg;
508 else {
509 (void) fprintf(stderr,
510 _("%s: More than one -l option specified\n"),
511 progname);
512 (void) exit(EXIT_FAILURE);
513 }
514 break;
515 case 'p':
516 if (psxrules == NULL)
517 psxrules = optarg;
518 else {
519 (void) fprintf(stderr,
520 _("%s: More than one -p option specified\n"),
521 progname);
522 (void) exit(EXIT_FAILURE);
523 }
524 break;
525 case 'y':
526 if (yitcommand == NULL)
527 yitcommand = optarg;
528 else {
529 (void) fprintf(stderr,
530 _("%s: More than one -y option specified\n"),
531 progname);
532 (void) exit(EXIT_FAILURE);
533 }
534 break;
535 case 'L':
536 if (leapsec == NULL)
537 leapsec = optarg;
538 else {
539 (void) fprintf(stderr,
540 _("%s: More than one -L option specified\n"),
541 progname);
542 (void) exit(EXIT_FAILURE);
543 }
544 break;
545 case 'v':
546 noise = TRUE;
547 break;
548 case 's':
549 sflag = TRUE;
550 break;
551 }
552 if (optind == argc - 1 && strcmp(argv[optind], "=") == 0)
553 usage(); /* usage message by request */
554 if (directory == NULL)
555 directory = TZDIR;
556 if (yitcommand == NULL)
557 yitcommand = "yearistype";
558
559 setboundaries();
560
561 if (optind < argc && leapsec != NULL) {
562 infile(leapsec);
563 adjleap();
564 }
565
566 for (i = optind; i < argc; ++i)
567 infile(argv[i]);
568 if (errors)
569 (void) exit(EXIT_FAILURE);
570 associate();
571 for (i = 0; i < nzones; i = j) {
572 /*
573 ** Find the next non-continuation zone entry.
574 */
575 for (j = i + 1; j < nzones && zones[j].z_name == NULL; ++j)
576 continue;
577 outzone(&zones[i], j - i);
578 }
579 /*
580 ** Make links.
581 */
582 for (i = 0; i < nlinks; ++i) {
583 eat(links[i].l_filename, links[i].l_linenum);
584 dolink(links[i].l_from, links[i].l_to);
585 if (noise)
586 for (j = 0; j < nlinks; ++j)
587 if (strcmp(links[i].l_to,
588 links[j].l_from) == 0)
589 warning(_("link to link"));
590 }
591 if (lcltime != NULL) {
592 eat("command line", 1);
593 dolink(lcltime, TZDEFAULT);
594 }
595 if (psxrules != NULL) {
596 eat("command line", 1);
597 dolink(psxrules, TZDEFRULES);
598 }
599 return (errors == 0) ? EXIT_SUCCESS : EXIT_FAILURE;
600 }
601
602 static void
603 dolink(fromfile, tofile)
604 const char * const fromfile;
605 const char * const tofile;
606 {
607 register char * fromname;
608 register char * toname;
609
610 if (fromfile[0] == '/')
611 fromname = ecpyalloc(fromfile);
612 else {
613 fromname = ecpyalloc(directory);
614 fromname = ecatalloc(fromname, "/");
615 fromname = ecatalloc(fromname, fromfile);
616 }
617 if (tofile[0] == '/')
618 toname = ecpyalloc(tofile);
619 else {
620 toname = ecpyalloc(directory);
621 toname = ecatalloc(toname, "/");
622 toname = ecatalloc(toname, tofile);
623 }
624 /*
625 ** We get to be careful here since
626 ** there's a fair chance of root running us.
627 */
628 if (!itsdir(toname))
629 (void) remove(toname);
630 if (link(fromname, toname) != 0) {
631 int result;
632
633 if (mkdirs(toname) != 0)
634 (void) exit(EXIT_FAILURE);
635
636 result = link(fromname, toname);
637 #if HAVE_SYMLINK
638 if (result != 0 &&
639 access(fromname, F_OK) == 0 &&
640 !itsdir(fromname)) {
641 const char *s = tofile;
642 register char * symlinkcontents = NULL;
643
644 while ((s = strchr(s+1, '/')) != NULL)
645 symlinkcontents =
646 ecatalloc(symlinkcontents,
647 "../");
648 symlinkcontents =
649 ecatalloc(symlinkcontents,
650 fromfile);
651 result = symlink(symlinkcontents,
652 toname);
653 if (result == 0)
654 warning(_("hard link failed, symbolic link used"));
655 ifree(symlinkcontents);
656 }
657 #endif /* HAVE_SYMLINK */
658 if (result != 0) {
659 const char *e = strerror(errno);
660
661 (void) fprintf(stderr,
662 _("%s: Can't link from %s to %s: %s\n"),
663 progname, fromname, toname, e);
664 (void) exit(EXIT_FAILURE);
665 }
666 }
667 ifree(fromname);
668 ifree(toname);
669 }
670
671 #ifndef INT_MAX
672 #define INT_MAX ((int) (((unsigned)~0)>>1))
673 #endif /* !defined INT_MAX */
674
675 #ifndef INT_MIN
676 #define INT_MIN ((int) ~(((unsigned)~0)>>1))
677 #endif /* !defined INT_MIN */
678
679 /*
680 ** The tz file format currently allows at most 32-bit quantities.
681 ** This restriction should be removed before signed 32-bit values
682 ** wrap around in 2038, but unfortunately this will require a
683 ** change to the tz file format.
684 */
685
686 #define MAX_BITS_IN_FILE 32
687 #define TIME_T_BITS_IN_FILE ((TYPE_BIT(zic_t) < MAX_BITS_IN_FILE) ? \
688 TYPE_BIT(zic_t) : MAX_BITS_IN_FILE)
689
690 static void
691 setboundaries P((void))
692 {
693 register int i;
694
695 if (TYPE_SIGNED(zic_t)) {
696 min_time = -1;
697 for (i = 0; i < TIME_T_BITS_IN_FILE - 1; ++i)
698 min_time *= 2;
699 max_time = -(min_time + 1);
700 if (sflag)
701 min_time = 0;
702 } else {
703 min_time = 0;
704 max_time = 2 - sflag;
705 for (i = 0; i < TIME_T_BITS_IN_FILE - 1; ++i)
706 max_time *= 2;
707 --max_time;
708 }
709 {
710 time_t t;
711
712 t = (time_t) min_time;
713 min_year = TM_YEAR_BASE + gmtime(&t)->tm_year;
714 t = (time_t) max_time;
715 max_year = TM_YEAR_BASE + gmtime(&t)->tm_year;
716 }
717 min_year_representable = min_year;
718 max_year_representable = max_year;
719 }
720
721 static int
722 itsdir(name)
723 const char * const name;
724 {
725 register char * myname;
726 register int accres;
727
728 myname = ecpyalloc(name);
729 myname = ecatalloc(myname, "/.");
730 accres = access(myname, F_OK);
731 ifree(myname);
732 return accres == 0;
733 }
734
735 /*
736 ** Associate sets of rules with zones.
737 */
738
739 /*
740 ** Sort by rule name.
741 */
742
743 static int
744 rcomp(cp1, cp2)
745 const void * cp1;
746 const void * cp2;
747 {
748 return strcmp(((const struct rule *) cp1)->r_name,
749 ((const struct rule *) cp2)->r_name);
750 }
751
752 static void
753 associate P((void))
754 {
755 register struct zone * zp;
756 register struct rule * rp;
757 register int base, out;
758 register int i, j;
759
760 if (nrules != 0) {
761 (void) qsort((void *) rules, (size_t) nrules,
762 (size_t) sizeof *rules, rcomp);
763 for (i = 0; i < nrules - 1; ++i) {
764 if (strcmp(rules[i].r_name,
765 rules[i + 1].r_name) != 0)
766 continue;
767 if (strcmp(rules[i].r_filename,
768 rules[i + 1].r_filename) == 0)
769 continue;
770 eat(rules[i].r_filename, rules[i].r_linenum);
771 warning(_("same rule name in multiple files"));
772 eat(rules[i + 1].r_filename, rules[i + 1].r_linenum);
773 warning(_("same rule name in multiple files"));
774 for (j = i + 2; j < nrules; ++j) {
775 if (strcmp(rules[i].r_name,
776 rules[j].r_name) != 0)
777 break;
778 if (strcmp(rules[i].r_filename,
779 rules[j].r_filename) == 0)
780 continue;
781 if (strcmp(rules[i + 1].r_filename,
782 rules[j].r_filename) == 0)
783 continue;
784 break;
785 }
786 i = j - 1;
787 }
788 }
789 for (i = 0; i < nzones; ++i) {
790 zp = &zones[i];
791 zp->z_rules = NULL;
792 zp->z_nrules = 0;
793 }
794 for (base = 0; base < nrules; base = out) {
795 rp = &rules[base];
796 for (out = base + 1; out < nrules; ++out)
797 if (strcmp(rp->r_name, rules[out].r_name) != 0)
798 break;
799 for (i = 0; i < nzones; ++i) {
800 zp = &zones[i];
801 if (strcmp(zp->z_rule, rp->r_name) != 0)
802 continue;
803 zp->z_rules = rp;
804 zp->z_nrules = out - base;
805 }
806 }
807 for (i = 0; i < nzones; ++i) {
808 zp = &zones[i];
809 if (zp->z_nrules == 0) {
810 /*
811 ** Maybe we have a local standard time offset.
812 */
813 eat(zp->z_filename, zp->z_linenum);
814 zp->z_stdoff = gethms(zp->z_rule, _("unruly zone"),
815 TRUE);
816 /*
817 ** Note, though, that if there's no rule,
818 ** a '%s' in the format is a bad thing.
819 */
820 if (strchr(zp->z_format, '%') != 0)
821 error(_("%s in ruleless zone"));
822 }
823 }
824 if (errors)
825 (void) exit(EXIT_FAILURE);
826 }
827
828 static void
829 infile(name)
830 const char * name;
831 {
832 register FILE * fp;
833 register char ** fields;
834 register char * cp;
835 register const struct lookup * lp;
836 register int nfields;
837 register int wantcont;
838 register int num;
839 char buf[BUFSIZ];
840
841 if (strcmp(name, "-") == 0) {
842 name = _("standard input");
843 fp = stdin;
844 } else if ((fp = fopen(name, "r")) == NULL) {
845 const char *e = strerror(errno);
846
847 (void) fprintf(stderr, _("%s: Can't open %s: %s\n"),
848 progname, name, e);
849 (void) exit(EXIT_FAILURE);
850 }
851 wantcont = FALSE;
852 for (num = 1; ; ++num) {
853 eat(name, num);
854 if (fgets(buf, (int) sizeof buf, fp) != buf)
855 break;
856 cp = strchr(buf, '\n');
857 if (cp == NULL) {
858 error(_("line too long"));
859 (void) exit(EXIT_FAILURE);
860 }
861 *cp = '\0';
862 fields = getfields(buf);
863 nfields = 0;
864 while (fields[nfields] != NULL) {
865 static char nada;
866
867 if (strcmp(fields[nfields], "-") == 0)
868 fields[nfields] = &nada;
869 ++nfields;
870 }
871 if (nfields == 0) {
872 /* nothing to do */
873 } else if (wantcont) {
874 wantcont = inzcont(fields, nfields);
875 } else {
876 lp = byword(fields[0], line_codes);
877 if (lp == NULL)
878 error(_("input line of unknown type"));
879 else switch ((int) (lp->l_value)) {
880 case LC_RULE:
881 inrule(fields, nfields);
882 wantcont = FALSE;
883 break;
884 case LC_ZONE:
885 wantcont = inzone(fields, nfields);
886 break;
887 case LC_LINK:
888 inlink(fields, nfields);
889 wantcont = FALSE;
890 break;
891 case LC_LEAP:
892 if (name != leapsec)
893 (void) fprintf(stderr,
894 _("%s: Leap line in non leap seconds file %s\n"),
895 progname, name);
896 else inleap(fields, nfields);
897 wantcont = FALSE;
898 break;
899 default: /* "cannot happen" */
900 (void) fprintf(stderr,
901 _("%s: panic: Invalid l_value %d\n"),
902 progname, lp->l_value);
903 (void) exit(EXIT_FAILURE);
904 }
905 }
906 ifree((char *) fields);
907 }
908 if (ferror(fp)) {
909 (void) fprintf(stderr, _("%s: Error reading %s\n"),
910 progname, filename);
911 (void) exit(EXIT_FAILURE);
912 }
913 if (fp != stdin && fclose(fp)) {
914 const char *e = strerror(errno);
915
916 (void) fprintf(stderr, _("%s: Error closing %s: %s\n"),
917 progname, filename, e);
918 (void) exit(EXIT_FAILURE);
919 }
920 if (wantcont)
921 error(_("expected continuation line not found"));
922 }
923
924 /*
925 ** Convert a string of one of the forms
926 ** h -h hh:mm -hh:mm hh:mm:ss -hh:mm:ss
927 ** into a number of seconds.
928 ** A null string maps to zero.
929 ** Call error with errstring and return zero on errors.
930 */
931
932 static long
933 gethms(string, errstring, signable)
934 const char * string;
935 const char * const errstring;
936 const int signable;
937 {
938 int hh, mm, ss, sign;
939
940 if (string == NULL || *string == '\0')
941 return 0;
942 if (!signable)
943 sign = 1;
944 else if (*string == '-') {
945 sign = -1;
946 ++string;
947 } else sign = 1;
948 if (sscanf(string, scheck(string, "%d"), &hh) == 1)
949 mm = ss = 0;
950 else if (sscanf(string, scheck(string, "%d:%d"), &hh, &mm) == 2)
951 ss = 0;
952 else if (sscanf(string, scheck(string, "%d:%d:%d"),
953 &hh, &mm, &ss) != 3) {
954 error(errstring);
955 return 0;
956 }
957 if ((hh < 0 || hh >= HOURSPERDAY ||
958 mm < 0 || mm >= MINSPERHOUR ||
959 ss < 0 || ss > SECSPERMIN) &&
960 !(hh == HOURSPERDAY && mm == 0 && ss == 0)) {
961 error(errstring);
962 return 0;
963 }
964 if (noise && hh == HOURSPERDAY)
965 warning(_("24:00 not handled by pre-1998 versions of zic"));
966 return eitol(sign) *
967 (eitol(hh * MINSPERHOUR + mm) *
968 eitol(SECSPERMIN) + eitol(ss));
969 }
970
971 static void
972 inrule(fields, nfields)
973 register char ** const fields;
974 const int nfields;
975 {
976 static struct rule r;
977
978 if (nfields != RULE_FIELDS) {
979 error(_("wrong number of fields on Rule line"));
980 return;
981 }
982 if (*fields[RF_NAME] == '\0') {
983 error(_("nameless rule"));
984 return;
985 }
986 r.r_filename = filename;
987 r.r_linenum = linenum;
988 r.r_stdoff = gethms(fields[RF_STDOFF], _("invalid saved time"), TRUE);
989 rulesub(&r, fields[RF_LOYEAR], fields[RF_HIYEAR], fields[RF_COMMAND],
990 fields[RF_MONTH], fields[RF_DAY], fields[RF_TOD]);
991 r.r_name = ecpyalloc(fields[RF_NAME]);
992 r.r_abbrvar = ecpyalloc(fields[RF_ABBRVAR]);
993 rules = (struct rule *) (void *) erealloc((char *) rules,
994 (int) ((nrules + 1) * sizeof *rules));
995 rules[nrules++] = r;
996 }
997
998 static int
999 inzone(fields, nfields)
1000 register char ** const fields;
1001 const int nfields;
1002 {
1003 register int i;
1004 static char * buf;
1005
1006 if (nfields < ZONE_MINFIELDS || nfields > ZONE_MAXFIELDS) {
1007 error(_("wrong number of fields on Zone line"));
1008 return FALSE;
1009 }
1010 if (strcmp(fields[ZF_NAME], TZDEFAULT) == 0 && lcltime != NULL) {
1011 buf = erealloc(buf, (int) (132 + strlen(TZDEFAULT)));
1012 (void) sprintf(buf,
1013 _("\"Zone %s\" line and -l option are mutually exclusive"),
1014 TZDEFAULT);
1015 error(buf);
1016 return FALSE;
1017 }
1018 if (strcmp(fields[ZF_NAME], TZDEFRULES) == 0 && psxrules != NULL) {
1019 buf = erealloc(buf, (int) (132 + strlen(TZDEFRULES)));
1020 (void) sprintf(buf,
1021 _("\"Zone %s\" line and -p option are mutually exclusive"),
1022 TZDEFRULES);
1023 error(buf);
1024 return FALSE;
1025 }
1026 for (i = 0; i < nzones; ++i)
1027 if (zones[i].z_name != NULL &&
1028 strcmp(zones[i].z_name, fields[ZF_NAME]) == 0) {
1029 buf = erealloc(buf, (int) (132 +
1030 strlen(fields[ZF_NAME]) +
1031 strlen(zones[i].z_filename)));
1032 (void) sprintf(buf,
1033 _("duplicate zone name %s (file \"%s\", line %d)"),
1034 fields[ZF_NAME],
1035 zones[i].z_filename,
1036 zones[i].z_linenum);
1037 error(buf);
1038 return FALSE;
1039 }
1040 return inzsub(fields, nfields, FALSE);
1041 }
1042
1043 static int
1044 inzcont(fields, nfields)
1045 register char ** const fields;
1046 const int nfields;
1047 {
1048 if (nfields < ZONEC_MINFIELDS || nfields > ZONEC_MAXFIELDS) {
1049 error(_("wrong number of fields on Zone continuation line"));
1050 return FALSE;
1051 }
1052 return inzsub(fields, nfields, TRUE);
1053 }
1054
1055 static int
1056 inzsub(fields, nfields, iscont)
1057 register char ** const fields;
1058 const int nfields;
1059 const int iscont;
1060 {
1061 register char * cp;
1062 static struct zone z;
1063 register int i_gmtoff, i_rule, i_format;
1064 register int i_untilyear, i_untilmonth;
1065 register int i_untilday, i_untiltime;
1066 register int hasuntil;
1067
1068 if (iscont) {
1069 i_gmtoff = ZFC_GMTOFF;
1070 i_rule = ZFC_RULE;
1071 i_format = ZFC_FORMAT;
1072 i_untilyear = ZFC_TILYEAR;
1073 i_untilmonth = ZFC_TILMONTH;
1074 i_untilday = ZFC_TILDAY;
1075 i_untiltime = ZFC_TILTIME;
1076 z.z_name = NULL;
1077 } else {
1078 i_gmtoff = ZF_GMTOFF;
1079 i_rule = ZF_RULE;
1080 i_format = ZF_FORMAT;
1081 i_untilyear = ZF_TILYEAR;
1082 i_untilmonth = ZF_TILMONTH;
1083 i_untilday = ZF_TILDAY;
1084 i_untiltime = ZF_TILTIME;
1085 z.z_name = ecpyalloc(fields[ZF_NAME]);
1086 }
1087 z.z_filename = filename;
1088 z.z_linenum = linenum;
1089 z.z_gmtoff = gethms(fields[i_gmtoff], _("invalid UTC offset"), TRUE);
1090 if ((cp = strchr(fields[i_format], '%')) != 0) {
1091 if (*++cp != 's' || strchr(cp, '%') != 0) {
1092 error(_("invalid abbreviation format"));
1093 return FALSE;
1094 }
1095 }
1096 z.z_rule = ecpyalloc(fields[i_rule]);
1097 z.z_format = ecpyalloc(fields[i_format]);
1098 hasuntil = nfields > i_untilyear;
1099 if (hasuntil) {
1100 z.z_untilrule.r_filename = filename;
1101 z.z_untilrule.r_linenum = linenum;
1102 rulesub(&z.z_untilrule,
1103 fields[i_untilyear],
1104 "only",
1105 "",
1106 (nfields > i_untilmonth) ?
1107 fields[i_untilmonth] : "Jan",
1108 (nfields > i_untilday) ? fields[i_untilday] : "1",
1109 (nfields > i_untiltime) ? fields[i_untiltime] : "0");
1110 z.z_untiltime = rpytime(&z.z_untilrule,
1111 z.z_untilrule.r_loyear);
1112 if (iscont && nzones > 0 &&
1113 z.z_untiltime > min_time &&
1114 z.z_untiltime < max_time &&
1115 zones[nzones - 1].z_untiltime > min_time &&
1116 zones[nzones - 1].z_untiltime < max_time &&
1117 zones[nzones - 1].z_untiltime >= z.z_untiltime) {
1118 error(_(
1119 "Zone continuation line end time is not after end time of previous line"
1120 ));
1121 return FALSE;
1122 }
1123 }
1124 zones = (struct zone *) (void *) erealloc((char *) zones,
1125 (int) ((nzones + 1) * sizeof *zones));
1126 zones[nzones++] = z;
1127 /*
1128 ** If there was an UNTIL field on this line,
1129 ** there's more information about the zone on the next line.
1130 */
1131 return hasuntil;
1132 }
1133
1134 static void
1135 inleap(fields, nfields)
1136 register char ** const fields;
1137 const int nfields;
1138 {
1139 register const char * cp;
1140 register const struct lookup * lp;
1141 register int i, j;
1142 int year, month, day;
1143 long dayoff, tod;
1144 zic_t t;
1145
1146 if (nfields != LEAP_FIELDS) {
1147 error(_("wrong number of fields on Leap line"));
1148 return;
1149 }
1150 dayoff = 0;
1151 cp = fields[LP_YEAR];
1152 if (sscanf(cp, scheck(cp, "%d"), &year) != 1) {
1153 /*
1154 ** Leapin' Lizards!
1155 */
1156 error(_("invalid leaping year"));
1157 return;
1158 }
1159 j = EPOCH_YEAR;
1160 while (j != year) {
1161 if (year > j) {
1162 i = len_years[isleap(j)];
1163 ++j;
1164 } else {
1165 --j;
1166 i = -len_years[isleap(j)];
1167 }
1168 dayoff = oadd(dayoff, eitol(i));
1169 }
1170 if ((lp = byword(fields[LP_MONTH], mon_names)) == NULL) {
1171 error(_("invalid month name"));
1172 return;
1173 }
1174 month = lp->l_value;
1175 j = TM_JANUARY;
1176 while (j != month) {
1177 i = len_months[isleap(year)][j];
1178 dayoff = oadd(dayoff, eitol(i));
1179 ++j;
1180 }
1181 cp = fields[LP_DAY];
1182 if (sscanf(cp, scheck(cp, "%d"), &day) != 1 ||
1183 day <= 0 || day > len_months[isleap(year)][month]) {
1184 error(_("invalid day of month"));
1185 return;
1186 }
1187 dayoff = oadd(dayoff, eitol(day - 1));
1188 if (dayoff < 0 && !TYPE_SIGNED(zic_t)) {
1189 error(_("time before zero"));
1190 return;
1191 }
1192 if (dayoff < min_time / SECSPERDAY) {
1193 error(_("time too small"));
1194 return;
1195 }
1196 if (dayoff > max_time / SECSPERDAY) {
1197 error(_("time too large"));
1198 return;
1199 }
1200 t = (zic_t) dayoff * SECSPERDAY;
1201 tod = gethms(fields[LP_TIME], _("invalid time of day"), FALSE);
1202 cp = fields[LP_CORR];
1203 {
1204 register int positive;
1205 int count;
1206
1207 if (strcmp(cp, "") == 0) { /* infile() turns "-" into "" */
1208 positive = FALSE;
1209 count = 1;
1210 } else if (strcmp(cp, "--") == 0) {
1211 positive = FALSE;
1212 count = 2;
1213 } else if (strcmp(cp, "+") == 0) {
1214 positive = TRUE;
1215 count = 1;
1216 } else if (strcmp(cp, "++") == 0) {
1217 positive = TRUE;
1218 count = 2;
1219 } else {
1220 error(_("illegal CORRECTION field on Leap line"));
1221 return;
1222 }
1223 if ((lp = byword(fields[LP_ROLL], leap_types)) == NULL) {
1224 error(_(
1225 "illegal Rolling/Stationary field on Leap line"
1226 ));
1227 return;
1228 }
1229 leapadd(tadd(t, tod), positive, lp->l_value, count);
1230 }
1231 }
1232
1233 static void
1234 inlink(fields, nfields)
1235 register char ** const fields;
1236 const int nfields;
1237 {
1238 struct link l;
1239
1240 if (nfields != LINK_FIELDS) {
1241 error(_("wrong number of fields on Link line"));
1242 return;
1243 }
1244 if (*fields[LF_FROM] == '\0') {
1245 error(_("blank FROM field on Link line"));
1246 return;
1247 }
1248 if (*fields[LF_TO] == '\0') {
1249 error(_("blank TO field on Link line"));
1250 return;
1251 }
1252 l.l_filename = filename;
1253 l.l_linenum = linenum;
1254 l.l_from = ecpyalloc(fields[LF_FROM]);
1255 l.l_to = ecpyalloc(fields[LF_TO]);
1256 links = (struct link *) (void *) erealloc((char *) links,
1257 (int) ((nlinks + 1) * sizeof *links));
1258 links[nlinks++] = l;
1259 }
1260
1261 static void
1262 rulesub(rp, loyearp, hiyearp, typep, monthp, dayp, timep)
1263 register struct rule * const rp;
1264 const char * const loyearp;
1265 const char * const hiyearp;
1266 const char * const typep;
1267 const char * const monthp;
1268 const char * const dayp;
1269 const char * const timep;
1270 {
1271 register const struct lookup * lp;
1272 register const char * cp;
1273 register char * dp;
1274 register char * ep;
1275
1276 if ((lp = byword(monthp, mon_names)) == NULL) {
1277 error(_("invalid month name"));
1278 return;
1279 }
1280 rp->r_month = lp->l_value;
1281 rp->r_todisstd = FALSE;
1282 rp->r_todisgmt = FALSE;
1283 dp = ecpyalloc(timep);
1284 if (*dp != '\0') {
1285 ep = dp + strlen(dp) - 1;
1286 switch (lowerit(*ep)) {
1287 case 's': /* Standard */
1288 rp->r_todisstd = TRUE;
1289 rp->r_todisgmt = FALSE;
1290 *ep = '\0';
1291 break;
1292 case 'w': /* Wall */
1293 rp->r_todisstd = FALSE;
1294 rp->r_todisgmt = FALSE;
1295 *ep = '\0';
1296 break;
1297 case 'g': /* Greenwich */
1298 case 'u': /* Universal */
1299 case 'z': /* Zulu */
1300 rp->r_todisstd = TRUE;
1301 rp->r_todisgmt = TRUE;
1302 *ep = '\0';
1303 break;
1304 }
1305 }
1306 rp->r_tod = gethms(dp, _("invalid time of day"), FALSE);
1307 ifree(dp);
1308 /*
1309 ** Year work.
1310 */
1311 cp = loyearp;
1312 lp = byword(cp, begin_years);
1313 if (lp != NULL) switch ((int) lp->l_value) {
1314 case YR_MINIMUM:
1315 rp->r_loyear = INT_MIN;
1316 break;
1317 case YR_MAXIMUM:
1318 rp->r_loyear = INT_MAX;
1319 break;
1320 default: /* "cannot happen" */
1321 (void) fprintf(stderr,
1322 _("%s: panic: Invalid l_value %d\n"),
1323 progname, lp->l_value);
1324 (void) exit(EXIT_FAILURE);
1325 } else if (sscanf(cp, scheck(cp, "%d"), &rp->r_loyear) != 1) {
1326 error(_("invalid starting year"));
1327 return;
1328 } else if (noise) {
1329 if (rp->r_loyear < min_year_representable)
1330 warning(_("starting year too low to be represented"));
1331 else if (rp->r_loyear > max_year_representable)
1332 warning(_("starting year too high to be represented"));
1333 }
1334 cp = hiyearp;
1335 if ((lp = byword(cp, end_years)) != NULL) switch ((int) lp->l_value) {
1336 case YR_MINIMUM:
1337 rp->r_hiyear = INT_MIN;
1338 break;
1339 case YR_MAXIMUM:
1340 rp->r_hiyear = INT_MAX;
1341 break;
1342 case YR_ONLY:
1343 rp->r_hiyear = rp->r_loyear;
1344 break;
1345 default: /* "cannot happen" */
1346 (void) fprintf(stderr,
1347 _("%s: panic: Invalid l_value %d\n"),
1348 progname, lp->l_value);
1349 (void) exit(EXIT_FAILURE);
1350 } else if (sscanf(cp, scheck(cp, "%d"), &rp->r_hiyear) != 1) {
1351 error(_("invalid ending year"));
1352 return;
1353 } else if (noise) {
1354 if (rp->r_loyear < min_year_representable)
1355 warning(_("ending year too low to be represented"));
1356 else if (rp->r_loyear > max_year_representable)
1357 warning(_("ending year too high to be represented"));
1358 }
1359 if (rp->r_loyear > rp->r_hiyear) {
1360 error(_("starting year greater than ending year"));
1361 return;
1362 }
1363 if (*typep == '\0')
1364 rp->r_yrtype = NULL;
1365 else {
1366 if (rp->r_loyear == rp->r_hiyear) {
1367 error(_("typed single year"));
1368 return;
1369 }
1370 rp->r_yrtype = ecpyalloc(typep);
1371 }
1372 if (rp->r_loyear < min_year && rp->r_loyear > 0)
1373 min_year = rp->r_loyear;
1374 /*
1375 ** Day work.
1376 ** Accept things such as:
1377 ** 1
1378 ** last-Sunday
1379 ** Sun<=20
1380 ** Sun>=7
1381 */
1382 dp = ecpyalloc(dayp);
1383 if ((lp = byword(dp, lasts)) != NULL) {
1384 rp->r_dycode = DC_DOWLEQ;
1385 rp->r_wday = lp->l_value;
1386 rp->r_dayofmonth = len_months[1][rp->r_month];
1387 } else {
1388 if ((ep = strchr(dp, '<')) != 0)
1389 rp->r_dycode = DC_DOWLEQ;
1390 else if ((ep = strchr(dp, '>')) != 0)
1391 rp->r_dycode = DC_DOWGEQ;
1392 else {
1393 ep = dp;
1394 rp->r_dycode = DC_DOM;
1395 }
1396 if (rp->r_dycode != DC_DOM) {
1397 *ep++ = 0;
1398 if (*ep++ != '=') {
1399 error(_("invalid day of month"));
1400 ifree(dp);
1401 return;
1402 }
1403 if ((lp = byword(dp, wday_names)) == NULL) {
1404 error(_("invalid weekday name"));
1405 ifree(dp);
1406 return;
1407 }
1408 rp->r_wday = lp->l_value;
1409 }
1410 if (sscanf(ep, scheck(ep, "%d"), &rp->r_dayofmonth) != 1 ||
1411 rp->r_dayofmonth <= 0 ||
1412 (rp->r_dayofmonth > len_months[1][rp->r_month])) {
1413 error(_("invalid day of month"));
1414 ifree(dp);
1415 return;
1416 }
1417 }
1418 ifree(dp);
1419 }
1420
1421 static void
1422 convert(val, buf)
1423 const long val;
1424 char * const buf;
1425 {
1426 register int i;
1427 register long shift;
1428
1429 for (i = 0, shift = 24; i < 4; ++i, shift -= 8)
1430 buf[i] = val >> shift;
1431 }
1432
1433 static void
1434 puttzcode(val, fp)
1435 const long val;
1436 FILE * const fp;
1437 {
1438 char buf[4];
1439
1440 convert(val, buf);
1441 (void) fwrite((void *) buf, (size_t) sizeof buf, (size_t) 1, fp);
1442 }
1443
1444 static int
1445 atcomp(avp, bvp)
1446 void * avp;
1447 void * bvp;
1448 {
1449 if (((struct attype *) avp)->at < ((struct attype *) bvp)->at)
1450 return -1;
1451 else if (((struct attype *) avp)->at > ((struct attype *) bvp)->at)
1452 return 1;
1453 else return 0;
1454 }
1455
1456 static void
1457 writezone(name)
1458 const char * const name;
1459 {
1460 register FILE * fp;
1461 register int i, j;
1462 static char * fullname;
1463 static struct tzhead tzh;
1464 zic_t ats[TZ_MAX_TIMES];
1465 unsigned char types[TZ_MAX_TIMES];
1466
1467 /*
1468 ** Sort.
1469 */
1470 if (timecnt > 1)
1471 (void) qsort((void *) attypes, (size_t) timecnt,
1472 (size_t) sizeof *attypes, atcomp);
1473 /*
1474 ** Optimize.
1475 */
1476 {
1477 int fromi;
1478 int toi;
1479
1480 toi = 0;
1481 fromi = 0;
1482 while (fromi < timecnt && attypes[fromi].at < min_time)
1483 ++fromi;
1484 if (isdsts[0] == 0)
1485 while (fromi < timecnt && attypes[fromi].type == 0)
1486 ++fromi; /* handled by default rule */
1487 for ( ; fromi < timecnt; ++fromi) {
1488 if (toi != 0 && ((attypes[fromi].at +
1489 gmtoffs[attypes[toi - 1].type]) <=
1490 (attypes[toi - 1].at + gmtoffs[toi == 1 ? 0
1491 : attypes[toi - 2].type]))) {
1492 attypes[toi - 1].type =
1493 attypes[fromi].type;
1494 continue;
1495 }
1496 if (toi == 0 ||
1497 attypes[toi - 1].type != attypes[fromi].type)
1498 attypes[toi++] = attypes[fromi];
1499 }
1500 timecnt = toi;
1501 }
1502 /*
1503 ** Transfer.
1504 */
1505 for (i = 0; i < timecnt; ++i) {
1506 ats[i] = attypes[i].at;
1507 types[i] = attypes[i].type;
1508 }
1509 fullname = erealloc(fullname,
1510 (int) (strlen(directory) + 1 + strlen(name) + 1));
1511 (void) sprintf(fullname, "%s/%s", directory, name);
1512 /*
1513 ** Remove old file, if any, to snap links.
1514 */
1515 if (!itsdir(fullname) && remove(fullname) != 0 && errno != ENOENT) {
1516 const char *e = strerror(errno);
1517
1518 (void) fprintf(stderr, _("%s: Can't remove %s: %s\n"),
1519 progname, fullname, e);
1520 (void) exit(EXIT_FAILURE);
1521 }
1522 if ((fp = fopen(fullname, "wb")) == NULL) {
1523 if (mkdirs(fullname) != 0)
1524 (void) exit(EXIT_FAILURE);
1525 if ((fp = fopen(fullname, "wb")) == NULL) {
1526 const char *e = strerror(errno);
1527
1528 (void) fprintf(stderr, _("%s: Can't create %s: %s\n"),
1529 progname, fullname, e);
1530 (void) exit(EXIT_FAILURE);
1531 }
1532 }
1533 convert(eitol(typecnt), tzh.tzh_ttisgmtcnt);
1534 convert(eitol(typecnt), tzh.tzh_ttisstdcnt);
1535 convert(eitol(leapcnt), tzh.tzh_leapcnt);
1536 convert(eitol(timecnt), tzh.tzh_timecnt);
1537 convert(eitol(typecnt), tzh.tzh_typecnt);
1538 convert(eitol(charcnt), tzh.tzh_charcnt);
1539 (void) strncpy(tzh.tzh_magic, TZ_MAGIC, sizeof tzh.tzh_magic);
1540 #define DO(field) (void) fwrite((void *) tzh.field, \
1541 (size_t) sizeof tzh.field, (size_t) 1, fp)
1542 DO(tzh_magic);
1543 DO(tzh_reserved);
1544 DO(tzh_ttisgmtcnt);
1545 DO(tzh_ttisstdcnt);
1546 DO(tzh_leapcnt);
1547 DO(tzh_timecnt);
1548 DO(tzh_typecnt);
1549 DO(tzh_charcnt);
1550 #undef DO
1551 for (i = 0; i < timecnt; ++i) {
1552 j = leapcnt;
1553 while (--j >= 0)
1554 if (ats[i] >= trans[j]) {
1555 ats[i] = tadd(ats[i], corr[j]);
1556 break;
1557 }
1558 puttzcode((long) ats[i], fp);
1559 }
1560 if (timecnt > 0)
1561 (void) fwrite((void *) types, (size_t) sizeof types[0],
1562 (size_t) timecnt, fp);
1563 for (i = 0; i < typecnt; ++i) {
1564 puttzcode((long) gmtoffs[i], fp);
1565 (void) putc(isdsts[i], fp);
1566 (void) putc(abbrinds[i], fp);
1567 }
1568 if (charcnt != 0)
1569 (void) fwrite((void *) chars, (size_t) sizeof chars[0],
1570 (size_t) charcnt, fp);
1571 for (i = 0; i < leapcnt; ++i) {
1572 if (roll[i]) {
1573 if (timecnt == 0 || trans[i] < ats[0]) {
1574 j = 0;
1575 while (isdsts[j])
1576 if (++j >= typecnt) {
1577 j = 0;
1578 break;
1579 }
1580 } else {
1581 j = 1;
1582 while (j < timecnt && trans[i] >= ats[j])
1583 ++j;
1584 j = types[j - 1];
1585 }
1586 puttzcode((long) tadd(trans[i], -gmtoffs[j]), fp);
1587 } else puttzcode((long) trans[i], fp);
1588 puttzcode((long) corr[i], fp);
1589 }
1590 for (i = 0; i < typecnt; ++i)
1591 (void) putc(ttisstds[i], fp);
1592 for (i = 0; i < typecnt; ++i)
1593 (void) putc(ttisgmts[i], fp);
1594 if (ferror(fp) || fclose(fp)) {
1595 (void) fprintf(stderr, _("%s: Error writing %s\n"),
1596 progname, fullname);
1597 (void) exit(EXIT_FAILURE);
1598 }
1599 }
1600
1601 static void
1602 doabbr(abbr, format, letters, isdst)
1603 char * const abbr;
1604 const char * const format;
1605 const char * const letters;
1606 const int isdst;
1607 {
1608 if (strchr(format, '/') == NULL) {
1609 if (letters == NULL)
1610 (void) strcpy(abbr, format);
1611 else (void) sprintf(abbr, format, letters);
1612 } else if (isdst)
1613 (void) strcpy(abbr, strchr(format, '/') + 1);
1614 else {
1615 (void) strcpy(abbr, format);
1616 *strchr(abbr, '/') = '\0';
1617 }
1618 }
1619
1620 static void
1621 outzone(zpfirst, zonecount)
1622 const struct zone * const zpfirst;
1623 const int zonecount;
1624 {
1625 register const struct zone * zp;
1626 register struct rule * rp;
1627 register int i, j;
1628 register int usestart, useuntil;
1629 register zic_t starttime, untiltime;
1630 register long gmtoff;
1631 register long stdoff;
1632 register int year;
1633 register long startoff;
1634 register int startttisstd;
1635 register int startttisgmt;
1636 register int type;
1637 char startbuf[BUFSIZ];
1638
1639 INITIALIZE(untiltime);
1640 INITIALIZE(starttime);
1641 /*
1642 ** Now. . .finally. . .generate some useful data!
1643 */
1644 timecnt = 0;
1645 typecnt = 0;
1646 charcnt = 0;
1647 /*
1648 ** Thanks to Earl Chew (earl@dnd.icp.nec.com.au)
1649 ** for noting the need to unconditionally initialize startttisstd.
1650 */
1651 startttisstd = FALSE;
1652 startttisgmt = FALSE;
1653 for (i = 0; i < zonecount; ++i) {
1654 /*
1655 ** A guess that may well be corrected later.
1656 */
1657 stdoff = 0;
1658 zp = &zpfirst[i];
1659 usestart = i > 0 && (zp - 1)->z_untiltime > min_time;
1660 useuntil = i < (zonecount - 1);
1661 if (useuntil && zp->z_untiltime <= min_time)
1662 continue;
1663 gmtoff = zp->z_gmtoff;
1664 eat(zp->z_filename, zp->z_linenum);
1665 *startbuf = '\0';
1666 startoff = zp->z_gmtoff;
1667 if (zp->z_nrules == 0) {
1668 stdoff = zp->z_stdoff;
1669 doabbr(startbuf, zp->z_format,
1670 (char *) NULL, stdoff != 0);
1671 type = addtype(oadd(zp->z_gmtoff, stdoff),
1672 startbuf, stdoff != 0, startttisstd,
1673 startttisgmt);
1674 if (usestart) {
1675 addtt(starttime, type);
1676 usestart = FALSE;
1677 } else if (stdoff != 0)
1678 addtt(min_time, type);
1679 } else for (year = min_year; year <= max_year; ++year) {
1680 if (useuntil && year > zp->z_untilrule.r_hiyear)
1681 break;
1682 /*
1683 ** Mark which rules to do in the current year.
1684 ** For those to do, calculate rpytime(rp, year);
1685 */
1686 for (j = 0; j < zp->z_nrules; ++j) {
1687 rp = &zp->z_rules[j];
1688 eats(zp->z_filename, zp->z_linenum,
1689 rp->r_filename, rp->r_linenum);
1690 rp->r_todo = year >= rp->r_loyear &&
1691 year <= rp->r_hiyear &&
1692 yearistype(year, rp->r_yrtype);
1693 if (rp->r_todo)
1694 rp->r_temp = rpytime(rp, year);
1695 }
1696 for ( ; ; ) {
1697 register int k;
1698 register zic_t jtime, ktime;
1699 register long offset;
1700 char buf[BUFSIZ];
1701
1702 INITIALIZE(ktime);
1703 if (useuntil) {
1704 /*
1705 ** Turn untiltime into UTC
1706 ** assuming the current gmtoff and
1707 ** stdoff values.
1708 */
1709 untiltime = zp->z_untiltime;
1710 if (!zp->z_untilrule.r_todisgmt)
1711 untiltime = tadd(untiltime,
1712 -gmtoff);
1713 if (!zp->z_untilrule.r_todisstd)
1714 untiltime = tadd(untiltime,
1715 -stdoff);
1716 }
1717 /*
1718 ** Find the rule (of those to do, if any)
1719 ** that takes effect earliest in the year.
1720 */
1721 k = -1;
1722 for (j = 0; j < zp->z_nrules; ++j) {
1723 rp = &zp->z_rules[j];
1724 if (!rp->r_todo)
1725 continue;
1726 eats(zp->z_filename, zp->z_linenum,
1727 rp->r_filename, rp->r_linenum);
1728 offset = rp->r_todisgmt ? 0 : gmtoff;
1729 if (!rp->r_todisstd)
1730 offset = oadd(offset, stdoff);
1731 jtime = rp->r_temp;
1732 if (jtime == min_time ||
1733 jtime == max_time)
1734 continue;
1735 jtime = tadd(jtime, -offset);
1736 if (k < 0 || jtime < ktime) {
1737 k = j;
1738 ktime = jtime;
1739 }
1740 }
1741 if (k < 0)
1742 break; /* go on to next year */
1743 rp = &zp->z_rules[k];
1744 rp->r_todo = FALSE;
1745 if (useuntil && ktime >= untiltime)
1746 break;
1747 stdoff = rp->r_stdoff;
1748 if (usestart && ktime == starttime)
1749 usestart = FALSE;
1750 if (usestart) {
1751 if (ktime < starttime) {
1752 startoff = oadd(zp->z_gmtoff,
1753 stdoff);
1754 doabbr(startbuf, zp->z_format,
1755 rp->r_abbrvar,
1756 rp->r_stdoff != 0);
1757 continue;
1758 }
1759 if (*startbuf == '\0' &&
1760 startoff == oadd(zp->z_gmtoff,
1761 stdoff))
1762 doabbr(startbuf,
1763 zp->z_format,
1764 rp->r_abbrvar,
1765 rp->r_stdoff !=
1766 0);
1767 }
1768 eats(zp->z_filename, zp->z_linenum,
1769 rp->r_filename, rp->r_linenum);
1770 doabbr(buf, zp->z_format, rp->r_abbrvar,
1771 rp->r_stdoff != 0);
1772 offset = oadd(zp->z_gmtoff, rp->r_stdoff);
1773 type = addtype(offset, buf, rp->r_stdoff != 0,
1774 rp->r_todisstd, rp->r_todisgmt);
1775 addtt(ktime, type);
1776 }
1777 }
1778 if (usestart) {
1779 if (*startbuf == '\0' &&
1780 zp->z_format != NULL &&
1781 strchr(zp->z_format, '%') == NULL &&
1782 strchr(zp->z_format, '/') == NULL)
1783 (void) strcpy(startbuf, zp->z_format);
1784 eat(zp->z_filename, zp->z_linenum);
1785 if (*startbuf == '\0')
1786 error(_("can't determine time zone abbreviation to use just after until time"));
1787 else addtt(starttime,
1788 addtype(startoff, startbuf,
1789 startoff != zp->z_gmtoff,
1790 startttisstd,
1791 startttisgmt));
1792 }
1793 /*
1794 ** Now we may get to set starttime for the next zone line.
1795 */
1796 if (useuntil) {
1797 startttisstd = zp->z_untilrule.r_todisstd;
1798 startttisgmt = zp->z_untilrule.r_todisgmt;
1799 starttime = zp->z_untiltime;
1800 if (!startttisstd)
1801 starttime = tadd(starttime, -stdoff);
1802 if (!startttisgmt)
1803 starttime = tadd(starttime, -gmtoff);
1804 }
1805 }
1806 writezone(zpfirst->z_name);
1807 }
1808
1809 static void
1810 addtt(starttime, type)
1811 const zic_t starttime;
1812 int type;
1813 {
1814 if (starttime <= min_time ||
1815 (timecnt == 1 && attypes[0].at < min_time)) {
1816 gmtoffs[0] = gmtoffs[type];
1817 isdsts[0] = isdsts[type];
1818 ttisstds[0] = ttisstds[type];
1819 ttisgmts[0] = ttisgmts[type];
1820 if (abbrinds[type] != 0)
1821 (void) strcpy(chars, &chars[abbrinds[type]]);
1822 abbrinds[0] = 0;
1823 charcnt = strlen(chars) + 1;
1824 typecnt = 1;
1825 timecnt = 0;
1826 type = 0;
1827 }
1828 if (timecnt >= TZ_MAX_TIMES) {
1829 error(_("too many transitions?!"));
1830 (void) exit(EXIT_FAILURE);
1831 }
1832 attypes[timecnt].at = starttime;
1833 attypes[timecnt].type = type;
1834 ++timecnt;
1835 }
1836
1837 static int
1838 addtype(gmtoff, abbr, isdst, ttisstd, ttisgmt)
1839 const long gmtoff;
1840 const char * const abbr;
1841 const int isdst;
1842 const int ttisstd;
1843 const int ttisgmt;
1844 {
1845 register int i, j;
1846
1847 if (isdst != TRUE && isdst != FALSE) {
1848 error(_("internal error - addtype called with bad isdst"));
1849 (void) exit(EXIT_FAILURE);
1850 }
1851 if (ttisstd != TRUE && ttisstd != FALSE) {
1852 error(_("internal error - addtype called with bad ttisstd"));
1853 (void) exit(EXIT_FAILURE);
1854 }
1855 if (ttisgmt != TRUE && ttisgmt != FALSE) {
1856 error(_("internal error - addtype called with bad ttisgmt"));
1857 (void) exit(EXIT_FAILURE);
1858 }
1859 /*
1860 ** See if there's already an entry for this zone type.
1861 ** If so, just return its index.
1862 */
1863 for (i = 0; i < typecnt; ++i) {
1864 if (gmtoff == gmtoffs[i] && isdst == isdsts[i] &&
1865 strcmp(abbr, &chars[abbrinds[i]]) == 0 &&
1866 ttisstd == ttisstds[i] &&
1867 ttisgmt == ttisgmts[i])
1868 return i;
1869 }
1870 /*
1871 ** There isn't one; add a new one, unless there are already too
1872 ** many.
1873 */
1874 if (typecnt >= TZ_MAX_TYPES) {
1875 error(_("too many local time types"));
1876 (void) exit(EXIT_FAILURE);
1877 }
1878 gmtoffs[i] = gmtoff;
1879 isdsts[i] = isdst;
1880 ttisstds[i] = ttisstd;
1881 ttisgmts[i] = ttisgmt;
1882
1883 for (j = 0; j < charcnt; ++j)
1884 if (strcmp(&chars[j], abbr) == 0)
1885 break;
1886 if (j == charcnt)
1887 newabbr(abbr);
1888 abbrinds[i] = j;
1889 ++typecnt;
1890 return i;
1891 }
1892
1893 static void
1894 leapadd(t, positive, rolling, count)
1895 const zic_t t;
1896 const int positive;
1897 const int rolling;
1898 int count;
1899 {
1900 register int i, j;
1901
1902 if (leapcnt + (positive ? count : 1) > TZ_MAX_LEAPS) {
1903 error(_("too many leap seconds"));
1904 (void) exit(EXIT_FAILURE);
1905 }
1906 for (i = 0; i < leapcnt; ++i)
1907 if (t <= trans[i]) {
1908 if (t == trans[i]) {
1909 error(_("repeated leap second moment"));
1910 (void) exit(EXIT_FAILURE);
1911 }
1912 break;
1913 }
1914 do {
1915 for (j = leapcnt; j > i; --j) {
1916 trans[j] = trans[j - 1];
1917 corr[j] = corr[j - 1];
1918 roll[j] = roll[j - 1];
1919 }
1920 trans[i] = t;
1921 corr[i] = positive ? 1L : eitol(-count);
1922 roll[i] = rolling;
1923 ++leapcnt;
1924 } while (positive && --count != 0);
1925 }
1926
1927 static void
1928 adjleap P((void))
1929 {
1930 register int i;
1931 register long last = 0;
1932
1933 /*
1934 ** propagate leap seconds forward
1935 */
1936 for (i = 0; i < leapcnt; ++i) {
1937 trans[i] = tadd(trans[i], last);
1938 last = corr[i] += last;
1939 }
1940 }
1941
1942 static int
1943 yearistype(year, type)
1944 const int year;
1945 const char * const type;
1946 {
1947 static char * buf;
1948 int result;
1949
1950 if (type == NULL || *type == '\0')
1951 return TRUE;
1952 buf = erealloc(buf, (int) (132 + strlen(yitcommand) + strlen(type)));
1953 (void) sprintf(buf, "%s %d %s", yitcommand, year, type);
1954 result = system(buf);
1955 if (WIFEXITED(result)) switch (WEXITSTATUS(result)) {
1956 case 0:
1957 return TRUE;
1958 case 1:
1959 return FALSE;
1960 }
1961 error(_("Wild result from command execution"));
1962 (void) fprintf(stderr, _("%s: command was '%s', result was %d\n"),
1963 progname, buf, result);
1964 for ( ; ; )
1965 (void) exit(EXIT_FAILURE);
1966 }
1967
1968 static int
1969 lowerit(a)
1970 int a;
1971 {
1972 a = (unsigned char) a;
1973 return (isascii(a) && isupper(a)) ? tolower(a) : a;
1974 }
1975
1976 static int
1977 ciequal(ap, bp) /* case-insensitive equality */
1978 register const char * ap;
1979 register const char * bp;
1980 {
1981 while (lowerit(*ap) == lowerit(*bp++))
1982 if (*ap++ == '\0')
1983 return TRUE;
1984 return FALSE;
1985 }
1986
1987 static int
1988 itsabbr(abbr, word)
1989 register const char * abbr;
1990 register const char * word;
1991 {
1992 if (lowerit(*abbr) != lowerit(*word))
1993 return FALSE;
1994 ++word;
1995 while (*++abbr != '\0')
1996 do {
1997 if (*word == '\0')
1998 return FALSE;
1999 } while (lowerit(*word++) != lowerit(*abbr));
2000 return TRUE;
2001 }
2002
2003 static const struct lookup *
2004 byword(word, table)
2005 register const char * const word;
2006 register const struct lookup * const table;
2007 {
2008 register const struct lookup * foundlp;
2009 register const struct lookup * lp;
2010
2011 if (word == NULL || table == NULL)
2012 return NULL;
2013 /*
2014 ** Look for exact match.
2015 */
2016 for (lp = table; lp->l_word != NULL; ++lp)
2017 if (ciequal(word, lp->l_word))
2018 return lp;
2019 /*
2020 ** Look for inexact match.
2021 */
2022 foundlp = NULL;
2023 for (lp = table; lp->l_word != NULL; ++lp)
2024 if (itsabbr(word, lp->l_word)) {
2025 if (foundlp == NULL)
2026 foundlp = lp;
2027 else return NULL; /* multiple inexact matches */
2028 }
2029 return foundlp;
2030 }
2031
2032 static char **
2033 getfields(cp)
2034 register char * cp;
2035 {
2036 register char * dp;
2037 register char ** array;
2038 register int nsubs;
2039
2040 if (cp == NULL)
2041 return NULL;
2042 array = (char **) (void *)
2043 emalloc((int) ((strlen(cp) + 1) * sizeof *array));
2044 nsubs = 0;
2045 for ( ; ; ) {
2046 while (isascii(*cp) && isspace((unsigned char) *cp))
2047 ++cp;
2048 if (*cp == '\0' || *cp == '#')
2049 break;
2050 array[nsubs++] = dp = cp;
2051 do {
2052 if ((*dp = *cp++) != '"')
2053 ++dp;
2054 else while ((*dp = *cp++) != '"')
2055 if (*dp != '\0')
2056 ++dp;
2057 else error(_(
2058 "Odd number of quotation marks"
2059 ));
2060 } while (*cp != '\0' && *cp != '#' &&
2061 (!isascii(*cp) || !isspace((unsigned char) *cp)));
2062 if (isascii(*cp) && isspace((unsigned char) *cp))
2063 ++cp;
2064 *dp = '\0';
2065 }
2066 array[nsubs] = NULL;
2067 return array;
2068 }
2069
2070 static long
2071 oadd(t1, t2)
2072 const long t1;
2073 const long t2;
2074 {
2075 register long t;
2076
2077 t = t1 + t2;
2078 if ((t2 > 0 && t <= t1) || (t2 < 0 && t >= t1)) {
2079 error(_("time overflow"));
2080 (void) exit(EXIT_FAILURE);
2081 }
2082 return t;
2083 }
2084
2085 static zic_t
2086 tadd(t1, t2)
2087 const zic_t t1;
2088 const long t2;
2089 {
2090 register zic_t t;
2091
2092 if (t1 == max_time && t2 > 0)
2093 return max_time;
2094 if (t1 == min_time && t2 < 0)
2095 return min_time;
2096 t = t1 + t2;
2097 if ((t2 > 0 && t <= t1) || (t2 < 0 && t >= t1)) {
2098 error(_("time overflow"));
2099 (void) exit(EXIT_FAILURE);
2100 }
2101 return t;
2102 }
2103
2104 /*
2105 ** Given a rule, and a year, compute the date - in seconds since January 1,
2106 ** 1970, 00:00 LOCAL time - in that year that the rule refers to.
2107 */
2108
2109 static zic_t
2110 rpytime(rp, wantedy)
2111 register const struct rule * const rp;
2112 register const int wantedy;
2113 {
2114 register int y, m, i;
2115 register long dayoff; /* with a nod to Margaret O. */
2116 register zic_t t;
2117
2118 if (wantedy == INT_MIN)
2119 return min_time;
2120 if (wantedy == INT_MAX)
2121 return max_time;
2122 dayoff = 0;
2123 m = TM_JANUARY;
2124 y = EPOCH_YEAR;
2125 while (wantedy != y) {
2126 if (wantedy > y) {
2127 i = len_years[isleap(y)];
2128 ++y;
2129 } else {
2130 --y;
2131 i = -len_years[isleap(y)];
2132 }
2133 dayoff = oadd(dayoff, eitol(i));
2134 }
2135 while (m != rp->r_month) {
2136 i = len_months[isleap(y)][m];
2137 dayoff = oadd(dayoff, eitol(i));
2138 ++m;
2139 }
2140 i = rp->r_dayofmonth;
2141 if (m == TM_FEBRUARY && i == 29 && !isleap(y)) {
2142 if (rp->r_dycode == DC_DOWLEQ)
2143 --i;
2144 else {
2145 error(_("use of 2/29 in non leap-year"));
2146 (void) exit(EXIT_FAILURE);
2147 }
2148 }
2149 --i;
2150 dayoff = oadd(dayoff, eitol(i));
2151 if (rp->r_dycode == DC_DOWGEQ || rp->r_dycode == DC_DOWLEQ) {
2152 register long wday;
2153
2154 #define LDAYSPERWEEK ((long) DAYSPERWEEK)
2155 wday = eitol(EPOCH_WDAY);
2156 /*
2157 ** Don't trust mod of negative numbers.
2158 */
2159 if (dayoff >= 0)
2160 wday = (wday + dayoff) % LDAYSPERWEEK;
2161 else {
2162 wday -= ((-dayoff) % LDAYSPERWEEK);
2163 if (wday < 0)
2164 wday += LDAYSPERWEEK;
2165 }
2166 while (wday != eitol(rp->r_wday))
2167 if (rp->r_dycode == DC_DOWGEQ) {
2168 dayoff = oadd(dayoff, (long) 1);
2169 if (++wday >= LDAYSPERWEEK)
2170 wday = 0;
2171 ++i;
2172 } else {
2173 dayoff = oadd(dayoff, (long) -1);
2174 if (--wday < 0)
2175 wday = LDAYSPERWEEK - 1;
2176 --i;
2177 }
2178 if (i < 0 || i >= len_months[isleap(y)][m]) {
2179 if (noise)
2180 warning(_("rule goes past start/end of month--\
2181 will not work with pre-2004 versions of zic"));
2182 }
2183 }
2184 if (dayoff < 0 && !TYPE_SIGNED(zic_t))
2185 return min_time;
2186 if (dayoff < min_time / SECSPERDAY)
2187 return min_time;
2188 if (dayoff > max_time / SECSPERDAY)
2189 return max_time;
2190 t = (zic_t) dayoff * SECSPERDAY;
2191 return tadd(t, rp->r_tod);
2192 }
2193
2194 static void
2195 newabbr(string)
2196 const char * const string;
2197 {
2198 register int i;
2199
2200 i = strlen(string) + 1;
2201 if (charcnt + i > TZ_MAX_CHARS) {
2202 error(_("too many, or too long, time zone abbreviations"));
2203 (void) exit(EXIT_FAILURE);
2204 }
2205 (void) strcpy(&chars[charcnt], string);
2206 charcnt += eitol(i);
2207 }
2208
2209 static int
2210 mkdirs(argname)
2211 char * const argname;
2212 {
2213 register char * name;
2214 register char * cp;
2215
2216 if (argname == NULL || *argname == '\0')
2217 return 0;
2218 cp = name = ecpyalloc(argname);
2219 while ((cp = strchr(cp + 1, '/')) != 0) {
2220 *cp = '\0';
2221 #ifndef unix
2222 /*
2223 ** DOS drive specifier?
2224 */
2225 if (isalpha((unsigned char) name[0]) &&
2226 name[1] == ':' && name[2] == '\0') {
2227 *cp = '/';
2228 continue;
2229 }
2230 #endif /* !defined unix */
2231 if (!itsdir(name)) {
2232 /*
2233 ** It doesn't seem to exist, so we try to create it.
2234 ** Creation may fail because of the directory being
2235 ** created by some other multiprocessor, so we get
2236 ** to do extra checking.
2237 */
2238 if (mkdir(name, MKDIR_UMASK) != 0) {
2239 const char *e = strerror(errno);
2240
2241 if (errno != EEXIST || !itsdir(name)) {
2242 (void) fprintf(stderr,
2243 _("%s: Can't create directory %s: %s\n"),
2244 progname, name, e);
2245 ifree(name);
2246 return -1;
2247 }
2248 }
2249 }
2250 *cp = '/';
2251 }
2252 ifree(name);
2253 return 0;
2254 }
2255
2256 static long
2257 eitol(i)
2258 const int i;
2259 {
2260 long l;
2261
2262 l = i;
2263 if ((i < 0 && l >= 0) || (i == 0 && l != 0) || (i > 0 && l <= 0)) {
2264 (void) fprintf(stderr,
2265 _("%s: %d did not sign extend correctly\n"),
2266 progname, i);
2267 (void) exit(EXIT_FAILURE);
2268 }
2269 return l;
2270 }
2271
2272 /*
2273 ** UNIX was a registered trademark of The Open Group in 2003.
2274 */
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