2 ** This file is in the public domain, so clarified as of
3 ** 2006-07-17 by Arthur David Olson.
6 static char elsieid[] = "@(#)zic.c 8.14";
12 #define ZIC_VERSION '2'
14 typedef int_fast64_t zic_t;
16 #ifndef ZIC_MAX_ABBR_LEN_WO_WARN
17 #define ZIC_MAX_ABBR_LEN_WO_WARN 6
18 #endif /* !defined ZIC_MAX_ABBR_LEN_WO_WARN */
24 #define MKDIR_UMASK (S_IRUSR|S_IWUSR|S_IXUSR|S_IRGRP|S_IXGRP|S_IROTH|S_IXOTH)
26 #define MKDIR_UMASK 0755
30 ** On some ancient hosts, predicates like `isspace(C)' are defined
31 ** only if isascii(C) || C == EOF. Modern hosts obey the C Standard,
32 ** which says they are defined only if C == ((unsigned char) C) || C == EOF.
33 ** Neither the C Standard nor Posix require that `isascii' exist.
34 ** For portability, we check both ancient and modern requirements.
35 ** If isascii is not defined, the isascii check succeeds trivially.
42 #define OFFSET_STRLEN_MAXIMUM (7 + INT_STRLEN_MAXIMUM(long))
43 #define RULE_STRLEN_MAXIMUM 8 /* "Mdd.dd.d" */
45 #define end(cp) (strchr((cp), '\0'))
48 const char * r_filename;
52 int r_loyear; /* for example, 1986 */
53 int r_hiyear; /* for example, 1986 */
54 const char * r_yrtype;
58 int r_month; /* 0..11 */
60 int r_dycode; /* see below */
64 long r_tod; /* time from midnight */
65 int r_todisstd; /* above is standard time if TRUE */
66 /* or wall clock time if FALSE */
67 int r_todisgmt; /* above is GMT if TRUE */
68 /* or local time if FALSE */
69 long r_stdoff; /* offset from standard time */
70 const char * r_abbrvar; /* variable part of abbreviation */
72 int r_todo; /* a rule to do (used in outzone) */
73 zic_t r_temp; /* used in outzone */
77 ** r_dycode r_dayofmonth r_wday
80 #define DC_DOM 0 /* 1..31 */ /* unused */
81 #define DC_DOWGEQ 1 /* 1..31 */ /* 0..6 (Sun..Sat) */
82 #define DC_DOWLEQ 2 /* 1..31 */ /* 0..6 (Sun..Sat) */
85 const char * z_filename;
91 const char * z_format;
95 struct rule * z_rules;
98 struct rule z_untilrule;
102 extern int getopt P((int argc, char * const argv[],
103 const char * options));
104 extern int link P((const char * fromname, const char * toname));
105 extern char * optarg;
108 static void addtt P((zic_t starttime, int type));
109 static int addtype P((long gmtoff, const char * abbr, int isdst,
110 int ttisstd, int ttisgmt));
111 static void leapadd P((zic_t t, int positive, int rolling, int count));
112 static void adjleap P((void));
113 static void associate P((void));
114 static int ciequal P((const char * ap, const char * bp));
115 static void convert P((long val, char * buf));
116 static void convert64 P((zic_t val, char * buf));
117 static void dolink P((const char * fromfield, const char * tofield));
118 static void doabbr P((char * abbr, const char * format,
119 const char * letters, int isdst, int doquotes));
120 static void eat P((const char * name, int num));
121 static void eats P((const char * name, int num,
122 const char * rname, int rnum));
123 static long eitol P((int i));
124 static void error P((const char * message));
125 static char ** getfields P((char * buf));
126 static long gethms P((const char * string, const char * errstrng,
128 static void infile P((const char * filename));
129 static void inleap P((char ** fields, int nfields));
130 static void inlink P((char ** fields, int nfields));
131 static void inrule P((char ** fields, int nfields));
132 static int inzcont P((char ** fields, int nfields));
133 static int inzone P((char ** fields, int nfields));
134 static int inzsub P((char ** fields, int nfields, int iscont));
135 static int is32 P((zic_t x));
136 static int itsabbr P((const char * abbr, const char * word));
137 static int itsdir P((const char * name));
138 static int lowerit P((int c));
139 static char * memcheck P((char * tocheck));
140 static int mkdirs P((char * filename));
141 static void newabbr P((const char * abbr));
142 static long oadd P((long t1, long t2));
143 static void outzone P((const struct zone * zp, int ntzones));
144 static void puttzcode P((long code, FILE * fp));
145 static void puttzcode64 P((zic_t code, FILE * fp));
146 static int rcomp P((const void * leftp, const void * rightp));
147 static zic_t rpytime P((const struct rule * rp, int wantedy));
148 static void rulesub P((struct rule * rp,
149 const char * loyearp, const char * hiyearp,
150 const char * typep, const char * monthp,
151 const char * dayp, const char * timep));
152 static int stringoffset P((char * result, long offset));
153 static int stringrule P((char * result, const struct rule * rp,
154 long dstoff, long gmtoff));
155 static void stringzone P((char * result,
156 const struct zone * zp, int ntzones));
157 static void setboundaries P((void));
158 static zic_t tadd P((zic_t t1, long t2));
159 static void usage P((void));
160 static void writezone P((const char * name, const char * string));
161 static int yearistype P((int year, const char * type));
164 static char * strerror P((int));
165 #endif /* !HAVE_STRERROR */
169 static const char * filename;
172 static int leapminyear;
173 static int leapmaxyear;
175 static int max_abbrvar_len;
176 static int max_format_len;
177 static zic_t max_time;
179 static zic_t min_time;
182 static const char * rfilename;
184 static const char * progname;
198 ** Which fields are which on a Zone line.
206 #define ZF_TILMONTH 6
209 #define ZONE_MINFIELDS 5
210 #define ZONE_MAXFIELDS 9
213 ** Which fields are which on a Zone continuation line.
219 #define ZFC_TILYEAR 3
220 #define ZFC_TILMONTH 4
222 #define ZFC_TILTIME 6
223 #define ZONEC_MINFIELDS 3
224 #define ZONEC_MAXFIELDS 7
227 ** Which files are which on a Rule line.
239 #define RULE_FIELDS 10
242 ** Which fields are which on a Link line.
247 #define LINK_FIELDS 3
250 ** Which fields are which on a Leap line.
259 #define LEAP_FIELDS 7
269 static struct rule * rules;
270 static int nrules; /* number of rules */
272 static struct zone * zones;
273 static int nzones; /* number of zones */
276 const char * l_filename;
282 static struct link * links;
290 static struct lookup const * byword P((const char * string,
291 const struct lookup * lp));
293 static struct lookup const line_codes[] = {
301 static struct lookup const mon_names[] = {
302 { "January", TM_JANUARY },
303 { "February", TM_FEBRUARY },
304 { "March", TM_MARCH },
305 { "April", TM_APRIL },
309 { "August", TM_AUGUST },
310 { "September", TM_SEPTEMBER },
311 { "October", TM_OCTOBER },
312 { "November", TM_NOVEMBER },
313 { "December", TM_DECEMBER },
317 static struct lookup const wday_names[] = {
318 { "Sunday", TM_SUNDAY },
319 { "Monday", TM_MONDAY },
320 { "Tuesday", TM_TUESDAY },
321 { "Wednesday", TM_WEDNESDAY },
322 { "Thursday", TM_THURSDAY },
323 { "Friday", TM_FRIDAY },
324 { "Saturday", TM_SATURDAY },
328 static struct lookup const lasts[] = {
329 { "last-Sunday", TM_SUNDAY },
330 { "last-Monday", TM_MONDAY },
331 { "last-Tuesday", TM_TUESDAY },
332 { "last-Wednesday", TM_WEDNESDAY },
333 { "last-Thursday", TM_THURSDAY },
334 { "last-Friday", TM_FRIDAY },
335 { "last-Saturday", TM_SATURDAY },
339 static struct lookup const begin_years[] = {
340 { "minimum", YR_MINIMUM },
341 { "maximum", YR_MAXIMUM },
345 static struct lookup const end_years[] = {
346 { "minimum", YR_MINIMUM },
347 { "maximum", YR_MAXIMUM },
352 static struct lookup const leap_types[] = {
354 { "Stationary", FALSE },
358 static const int len_months[2][MONSPERYEAR] = {
359 { 31, 28, 31, 30, 31, 30, 31, 31, 30, 31, 30, 31 },
360 { 31, 29, 31, 30, 31, 30, 31, 31, 30, 31, 30, 31 }
363 static const int len_years[2] = {
364 DAYSPERNYEAR, DAYSPERLYEAR
367 static struct attype {
370 } attypes[TZ_MAX_TIMES];
371 static long gmtoffs[TZ_MAX_TYPES];
372 static char isdsts[TZ_MAX_TYPES];
373 static unsigned char abbrinds[TZ_MAX_TYPES];
374 static char ttisstds[TZ_MAX_TYPES];
375 static char ttisgmts[TZ_MAX_TYPES];
376 static char chars[TZ_MAX_CHARS];
377 static zic_t trans[TZ_MAX_LEAPS];
378 static long corr[TZ_MAX_LEAPS];
379 static char roll[TZ_MAX_LEAPS];
382 ** Memory allocation.
390 const char *e = strerror(errno);
392 (void) fprintf(stderr, _("%s: Memory exhausted: %s\n"),
399 #define emalloc(size) memcheck(imalloc(size))
400 #define erealloc(ptr, size) memcheck(irealloc((ptr), (size)))
401 #define ecpyalloc(ptr) memcheck(icpyalloc(ptr))
402 #define ecatalloc(oldp, newp) memcheck(icatalloc((oldp), (newp)))
413 extern char * sys_errlist[];
416 return (errnum > 0 && errnum <= sys_nerr) ?
417 sys_errlist[errnum] : _("Unknown system error");
419 #endif /* !HAVE_STRERROR */
422 eats(name, num, rname, rnum)
423 const char * const name;
425 const char * const rname;
436 const char * const name;
439 eats(name, num, (char *) NULL, -1);
444 const char * const string;
447 ** Match the format of "cc" to allow sh users to
448 ** zic ... 2>&1 | error -t "*" -v
451 (void) fprintf(stderr, _("\"%s\", line %d: %s"),
452 filename, linenum, string);
453 if (rfilename != NULL)
454 (void) fprintf(stderr, _(" (rule from \"%s\", line %d)"),
455 rfilename, rlinenum);
456 (void) fprintf(stderr, "\n");
462 const char * const string;
466 cp = ecpyalloc(_("warning: "));
467 cp = ecatalloc(cp, string);
476 (void) fprintf(stderr, _("%s: usage is %s \
477 [ --version ] [ -v ] [ -l localtime ] [ -p posixrules ] \\\n\
478 \t[ -d directory ] [ -L leapseconds ] [ -y yearistype ] [ filename ... ]\n"),
483 static const char * psxrules;
484 static const char * lcltime;
485 static const char * directory;
486 static const char * leapsec;
487 static const char * yitcommand;
499 (void) umask(umask(S_IWGRP | S_IWOTH) | (S_IWGRP | S_IWOTH));
500 #endif /* defined unix */
502 (void) setlocale(LC_ALL, "");
504 (void) bindtextdomain(TZ_DOMAIN, TZ_DOMAINDIR);
505 #endif /* defined TEXTDOMAINDIR */
506 (void) textdomain(TZ_DOMAIN);
507 #endif /* HAVE_GETTEXT */
509 if (TYPE_BIT(zic_t) < 64) {
510 (void) fprintf(stderr, "%s: %s\n", progname,
511 _("wild compilation-time specification of zic_t"));
514 for (i = 1; i < argc; ++i)
515 if (strcmp(argv[i], "--version") == 0) {
516 (void) printf("%s\n", elsieid);
519 while ((c = getopt(argc, argv, "d:l:p:L:vsy:")) != EOF && c != -1)
524 if (directory == NULL)
527 (void) fprintf(stderr,
528 _("%s: More than one -d option specified\n"),
537 (void) fprintf(stderr,
538 _("%s: More than one -l option specified\n"),
544 if (psxrules == NULL)
547 (void) fprintf(stderr,
548 _("%s: More than one -p option specified\n"),
554 if (yitcommand == NULL)
557 (void) fprintf(stderr,
558 _("%s: More than one -y option specified\n"),
567 (void) fprintf(stderr,
568 _("%s: More than one -L option specified\n"),
577 (void) printf("%s: -s ignored\n", progname);
580 if (optind == argc - 1 && strcmp(argv[optind], "=") == 0)
581 usage(); /* usage message by request */
582 if (directory == NULL)
584 if (yitcommand == NULL)
585 yitcommand = "yearistype";
589 if (optind < argc && leapsec != NULL) {
594 for (i = optind; i < argc; ++i)
599 for (i = 0; i < nzones; i = j) {
601 ** Find the next non-continuation zone entry.
603 for (j = i + 1; j < nzones && zones[j].z_name == NULL; ++j)
605 outzone(&zones[i], j - i);
610 for (i = 0; i < nlinks; ++i) {
611 eat(links[i].l_filename, links[i].l_linenum);
612 dolink(links[i].l_from, links[i].l_to);
614 for (j = 0; j < nlinks; ++j)
615 if (strcmp(links[i].l_to,
616 links[j].l_from) == 0)
617 warning(_("link to link"));
619 if (lcltime != NULL) {
620 eat("command line", 1);
621 dolink(lcltime, TZDEFAULT);
623 if (psxrules != NULL) {
624 eat("command line", 1);
625 dolink(psxrules, TZDEFRULES);
627 return (errors == 0) ? EXIT_SUCCESS : EXIT_FAILURE;
631 dolink(fromfield, tofield)
632 const char * const fromfield;
633 const char * const tofield;
635 register char * fromname;
636 register char * toname;
638 if (fromfield[0] == '/')
639 fromname = ecpyalloc(fromfield);
641 fromname = ecpyalloc(directory);
642 fromname = ecatalloc(fromname, "/");
643 fromname = ecatalloc(fromname, fromfield);
645 if (tofield[0] == '/')
646 toname = ecpyalloc(tofield);
648 toname = ecpyalloc(directory);
649 toname = ecatalloc(toname, "/");
650 toname = ecatalloc(toname, tofield);
653 ** We get to be careful here since
654 ** there's a fair chance of root running us.
657 (void) remove(toname);
658 if (link(fromname, toname) != 0) {
661 if (mkdirs(toname) != 0)
664 result = link(fromname, toname);
667 access(fromname, F_OK) == 0 &&
669 const char *s = tofield;
670 register char * symlinkcontents = NULL;
672 while ((s = strchr(s+1, '/')) != NULL)
674 ecatalloc(symlinkcontents,
677 ecatalloc(symlinkcontents,
679 result = symlink(symlinkcontents,
682 warning(_("hard link failed, symbolic link used"));
683 ifree(symlinkcontents);
685 #endif /* HAVE_SYMLINK */
687 const char *e = strerror(errno);
689 (void) fprintf(stderr,
690 _("%s: Can't link from %s to %s: %s\n"),
691 progname, fromname, toname, e);
699 #define TIME_T_BITS_IN_FILE 64
702 setboundaries P((void))
707 for (i = 0; i < TIME_T_BITS_IN_FILE - 1; ++i)
709 max_time = -(min_time + 1);
714 const char * const name;
716 register char * myname;
719 myname = ecpyalloc(name);
720 myname = ecatalloc(myname, "/.");
721 accres = access(myname, F_OK);
727 ** Associate sets of rules with zones.
731 ** Sort by rule name.
739 return strcmp(((const struct rule *) cp1)->r_name,
740 ((const struct rule *) cp2)->r_name);
746 register struct zone * zp;
747 register struct rule * rp;
748 register int base, out;
752 (void) qsort((void *) rules, (size_t) nrules,
753 (size_t) sizeof *rules, rcomp);
754 for (i = 0; i < nrules - 1; ++i) {
755 if (strcmp(rules[i].r_name,
756 rules[i + 1].r_name) != 0)
758 if (strcmp(rules[i].r_filename,
759 rules[i + 1].r_filename) == 0)
761 eat(rules[i].r_filename, rules[i].r_linenum);
762 warning(_("same rule name in multiple files"));
763 eat(rules[i + 1].r_filename, rules[i + 1].r_linenum);
764 warning(_("same rule name in multiple files"));
765 for (j = i + 2; j < nrules; ++j) {
766 if (strcmp(rules[i].r_name,
767 rules[j].r_name) != 0)
769 if (strcmp(rules[i].r_filename,
770 rules[j].r_filename) == 0)
772 if (strcmp(rules[i + 1].r_filename,
773 rules[j].r_filename) == 0)
780 for (i = 0; i < nzones; ++i) {
785 for (base = 0; base < nrules; base = out) {
787 for (out = base + 1; out < nrules; ++out)
788 if (strcmp(rp->r_name, rules[out].r_name) != 0)
790 for (i = 0; i < nzones; ++i) {
792 if (strcmp(zp->z_rule, rp->r_name) != 0)
795 zp->z_nrules = out - base;
798 for (i = 0; i < nzones; ++i) {
800 if (zp->z_nrules == 0) {
802 ** Maybe we have a local standard time offset.
804 eat(zp->z_filename, zp->z_linenum);
805 zp->z_stdoff = gethms(zp->z_rule, _("unruly zone"),
808 ** Note, though, that if there's no rule,
809 ** a '%s' in the format is a bad thing.
811 if (strchr(zp->z_format, '%') != 0)
812 error(_("%s in ruleless zone"));
824 register char ** fields;
826 register const struct lookup * lp;
827 register int nfields;
828 register int wantcont;
832 if (strcmp(name, "-") == 0) {
833 name = _("standard input");
835 } else if ((fp = fopen(name, "r")) == NULL) {
836 const char *e = strerror(errno);
838 (void) fprintf(stderr, _("%s: Can't open %s: %s\n"),
843 for (num = 1; ; ++num) {
845 if (fgets(buf, (int) sizeof buf, fp) != buf)
847 cp = strchr(buf, '\n');
849 error(_("line too long"));
853 fields = getfields(buf);
855 while (fields[nfields] != NULL) {
858 if (strcmp(fields[nfields], "-") == 0)
859 fields[nfields] = &nada;
864 } else if (wantcont) {
865 wantcont = inzcont(fields, nfields);
867 lp = byword(fields[0], line_codes);
869 error(_("input line of unknown type"));
870 else switch ((int) (lp->l_value)) {
872 inrule(fields, nfields);
876 wantcont = inzone(fields, nfields);
879 inlink(fields, nfields);
884 (void) fprintf(stderr,
885 _("%s: Leap line in non leap seconds file %s\n"),
887 else inleap(fields, nfields);
890 default: /* "cannot happen" */
891 (void) fprintf(stderr,
892 _("%s: panic: Invalid l_value %d\n"),
893 progname, lp->l_value);
897 ifree((char *) fields);
900 (void) fprintf(stderr, _("%s: Error reading %s\n"),
904 if (fp != stdin && fclose(fp)) {
905 const char *e = strerror(errno);
907 (void) fprintf(stderr, _("%s: Error closing %s: %s\n"),
908 progname, filename, e);
912 error(_("expected continuation line not found"));
916 ** Convert a string of one of the forms
917 ** h -h hh:mm -hh:mm hh:mm:ss -hh:mm:ss
918 ** into a number of seconds.
919 ** A null string maps to zero.
920 ** Call error with errstring and return zero on errors.
924 gethms(string, errstring, signable)
926 const char * const errstring;
932 if (string == NULL || *string == '\0')
936 else if (*string == '-') {
940 if (sscanf(string, scheck(string, "%ld"), &hh) == 1)
942 else if (sscanf(string, scheck(string, "%ld:%d"), &hh, &mm) == 2)
944 else if (sscanf(string, scheck(string, "%ld:%d:%d"),
945 &hh, &mm, &ss) != 3) {
950 mm < 0 || mm >= MINSPERHOUR ||
951 ss < 0 || ss > SECSPERMIN) {
955 if (LONG_MAX / SECSPERHOUR < hh) {
956 error(_("time overflow"));
959 if (noise && hh == HOURSPERDAY && mm == 0 && ss == 0)
960 warning(_("24:00 not handled by pre-1998 versions of zic"));
961 if (noise && (hh > HOURSPERDAY ||
962 (hh == HOURSPERDAY && (mm != 0 || ss != 0))))
963 warning(_("values over 24 hours not handled by pre-2007 versions of zic"));
964 return oadd(eitol(sign) * hh * eitol(SECSPERHOUR),
965 eitol(sign) * (eitol(mm) * eitol(SECSPERMIN) + eitol(ss)));
969 inrule(fields, nfields)
970 register char ** const fields;
973 static struct rule r;
975 if (nfields != RULE_FIELDS) {
976 error(_("wrong number of fields on Rule line"));
979 if (*fields[RF_NAME] == '\0') {
980 error(_("nameless rule"));
983 r.r_filename = filename;
984 r.r_linenum = linenum;
985 r.r_stdoff = gethms(fields[RF_STDOFF], _("invalid saved time"), TRUE);
986 rulesub(&r, fields[RF_LOYEAR], fields[RF_HIYEAR], fields[RF_COMMAND],
987 fields[RF_MONTH], fields[RF_DAY], fields[RF_TOD]);
988 r.r_name = ecpyalloc(fields[RF_NAME]);
989 r.r_abbrvar = ecpyalloc(fields[RF_ABBRVAR]);
990 if (max_abbrvar_len < strlen(r.r_abbrvar))
991 max_abbrvar_len = strlen(r.r_abbrvar);
992 rules = (struct rule *) (void *) erealloc((char *) rules,
993 (int) ((nrules + 1) * sizeof *rules));
998 inzone(fields, nfields)
999 register char ** const fields;
1005 if (nfields < ZONE_MINFIELDS || nfields > ZONE_MAXFIELDS) {
1006 error(_("wrong number of fields on Zone line"));
1009 if (strcmp(fields[ZF_NAME], TZDEFAULT) == 0 && lcltime != NULL) {
1010 buf = erealloc(buf, (int) (132 + strlen(TZDEFAULT)));
1012 _("\"Zone %s\" line and -l option are mutually exclusive"),
1017 if (strcmp(fields[ZF_NAME], TZDEFRULES) == 0 && psxrules != NULL) {
1018 buf = erealloc(buf, (int) (132 + strlen(TZDEFRULES)));
1020 _("\"Zone %s\" line and -p option are mutually exclusive"),
1025 for (i = 0; i < nzones; ++i)
1026 if (zones[i].z_name != NULL &&
1027 strcmp(zones[i].z_name, fields[ZF_NAME]) == 0) {
1028 buf = erealloc(buf, (int) (132 +
1029 strlen(fields[ZF_NAME]) +
1030 strlen(zones[i].z_filename)));
1032 _("duplicate zone name %s (file \"%s\", line %d)"),
1034 zones[i].z_filename,
1035 zones[i].z_linenum);
1039 return inzsub(fields, nfields, FALSE);
1043 inzcont(fields, nfields)
1044 register char ** const fields;
1047 if (nfields < ZONEC_MINFIELDS || nfields > ZONEC_MAXFIELDS) {
1048 error(_("wrong number of fields on Zone continuation line"));
1051 return inzsub(fields, nfields, TRUE);
1055 inzsub(fields, nfields, iscont)
1056 register char ** const fields;
1061 static struct zone z;
1062 register int i_gmtoff, i_rule, i_format;
1063 register int i_untilyear, i_untilmonth;
1064 register int i_untilday, i_untiltime;
1065 register int hasuntil;
1068 i_gmtoff = ZFC_GMTOFF;
1070 i_format = ZFC_FORMAT;
1071 i_untilyear = ZFC_TILYEAR;
1072 i_untilmonth = ZFC_TILMONTH;
1073 i_untilday = ZFC_TILDAY;
1074 i_untiltime = ZFC_TILTIME;
1077 i_gmtoff = ZF_GMTOFF;
1079 i_format = ZF_FORMAT;
1080 i_untilyear = ZF_TILYEAR;
1081 i_untilmonth = ZF_TILMONTH;
1082 i_untilday = ZF_TILDAY;
1083 i_untiltime = ZF_TILTIME;
1084 z.z_name = ecpyalloc(fields[ZF_NAME]);
1086 z.z_filename = filename;
1087 z.z_linenum = linenum;
1088 z.z_gmtoff = gethms(fields[i_gmtoff], _("invalid UTC offset"), TRUE);
1089 if ((cp = strchr(fields[i_format], '%')) != 0) {
1090 if (*++cp != 's' || strchr(cp, '%') != 0) {
1091 error(_("invalid abbreviation format"));
1095 z.z_rule = ecpyalloc(fields[i_rule]);
1096 z.z_format = ecpyalloc(fields[i_format]);
1097 if (max_format_len < strlen(z.z_format))
1098 max_format_len = strlen(z.z_format);
1099 hasuntil = nfields > i_untilyear;
1101 z.z_untilrule.r_filename = filename;
1102 z.z_untilrule.r_linenum = linenum;
1103 rulesub(&z.z_untilrule,
1104 fields[i_untilyear],
1107 (nfields > i_untilmonth) ?
1108 fields[i_untilmonth] : "Jan",
1109 (nfields > i_untilday) ? fields[i_untilday] : "1",
1110 (nfields > i_untiltime) ? fields[i_untiltime] : "0");
1111 z.z_untiltime = rpytime(&z.z_untilrule,
1112 z.z_untilrule.r_loyear);
1113 if (iscont && nzones > 0 &&
1114 z.z_untiltime > min_time &&
1115 z.z_untiltime < max_time &&
1116 zones[nzones - 1].z_untiltime > min_time &&
1117 zones[nzones - 1].z_untiltime < max_time &&
1118 zones[nzones - 1].z_untiltime >= z.z_untiltime) {
1120 "Zone continuation line end time is not after end time of previous line"
1125 zones = (struct zone *) (void *) erealloc((char *) zones,
1126 (int) ((nzones + 1) * sizeof *zones));
1127 zones[nzones++] = z;
1129 ** If there was an UNTIL field on this line,
1130 ** there's more information about the zone on the next line.
1136 inleap(fields, nfields)
1137 register char ** const fields;
1140 register const char * cp;
1141 register const struct lookup * lp;
1143 int year, month, day;
1147 if (nfields != LEAP_FIELDS) {
1148 error(_("wrong number of fields on Leap line"));
1152 cp = fields[LP_YEAR];
1153 if (sscanf(cp, scheck(cp, "%d"), &year) != 1) {
1157 error(_("invalid leaping year"));
1160 if (!leapseen || leapmaxyear < year)
1162 if (!leapseen || leapminyear > year)
1168 i = len_years[isleap(j)];
1172 i = -len_years[isleap(j)];
1174 dayoff = oadd(dayoff, eitol(i));
1176 if ((lp = byword(fields[LP_MONTH], mon_names)) == NULL) {
1177 error(_("invalid month name"));
1180 month = lp->l_value;
1182 while (j != month) {
1183 i = len_months[isleap(year)][j];
1184 dayoff = oadd(dayoff, eitol(i));
1187 cp = fields[LP_DAY];
1188 if (sscanf(cp, scheck(cp, "%d"), &day) != 1 ||
1189 day <= 0 || day > len_months[isleap(year)][month]) {
1190 error(_("invalid day of month"));
1193 dayoff = oadd(dayoff, eitol(day - 1));
1194 if (dayoff < 0 && !TYPE_SIGNED(zic_t)) {
1195 error(_("time before zero"));
1198 if (dayoff < min_time / SECSPERDAY) {
1199 error(_("time too small"));
1202 if (dayoff > max_time / SECSPERDAY) {
1203 error(_("time too large"));
1206 t = (zic_t) dayoff * SECSPERDAY;
1207 tod = gethms(fields[LP_TIME], _("invalid time of day"), FALSE);
1208 cp = fields[LP_CORR];
1210 register int positive;
1213 if (strcmp(cp, "") == 0) { /* infile() turns "-" into "" */
1216 } else if (strcmp(cp, "--") == 0) {
1219 } else if (strcmp(cp, "+") == 0) {
1222 } else if (strcmp(cp, "++") == 0) {
1226 error(_("illegal CORRECTION field on Leap line"));
1229 if ((lp = byword(fields[LP_ROLL], leap_types)) == NULL) {
1231 "illegal Rolling/Stationary field on Leap line"
1235 leapadd(tadd(t, tod), positive, lp->l_value, count);
1240 inlink(fields, nfields)
1241 register char ** const fields;
1246 if (nfields != LINK_FIELDS) {
1247 error(_("wrong number of fields on Link line"));
1250 if (*fields[LF_FROM] == '\0') {
1251 error(_("blank FROM field on Link line"));
1254 if (*fields[LF_TO] == '\0') {
1255 error(_("blank TO field on Link line"));
1258 l.l_filename = filename;
1259 l.l_linenum = linenum;
1260 l.l_from = ecpyalloc(fields[LF_FROM]);
1261 l.l_to = ecpyalloc(fields[LF_TO]);
1262 links = (struct link *) (void *) erealloc((char *) links,
1263 (int) ((nlinks + 1) * sizeof *links));
1264 links[nlinks++] = l;
1268 rulesub(rp, loyearp, hiyearp, typep, monthp, dayp, timep)
1269 register struct rule * const rp;
1270 const char * const loyearp;
1271 const char * const hiyearp;
1272 const char * const typep;
1273 const char * const monthp;
1274 const char * const dayp;
1275 const char * const timep;
1277 register const struct lookup * lp;
1278 register const char * cp;
1282 if ((lp = byword(monthp, mon_names)) == NULL) {
1283 error(_("invalid month name"));
1286 rp->r_month = lp->l_value;
1287 rp->r_todisstd = FALSE;
1288 rp->r_todisgmt = FALSE;
1289 dp = ecpyalloc(timep);
1291 ep = dp + strlen(dp) - 1;
1292 switch (lowerit(*ep)) {
1293 case 's': /* Standard */
1294 rp->r_todisstd = TRUE;
1295 rp->r_todisgmt = FALSE;
1298 case 'w': /* Wall */
1299 rp->r_todisstd = FALSE;
1300 rp->r_todisgmt = FALSE;
1303 case 'g': /* Greenwich */
1304 case 'u': /* Universal */
1305 case 'z': /* Zulu */
1306 rp->r_todisstd = TRUE;
1307 rp->r_todisgmt = TRUE;
1312 rp->r_tod = gethms(dp, _("invalid time of day"), FALSE);
1318 lp = byword(cp, begin_years);
1319 rp->r_lowasnum = lp == NULL;
1320 if (!rp->r_lowasnum) switch ((int) lp->l_value) {
1322 rp->r_loyear = INT_MIN;
1325 rp->r_loyear = INT_MAX;
1327 default: /* "cannot happen" */
1328 (void) fprintf(stderr,
1329 _("%s: panic: Invalid l_value %d\n"),
1330 progname, lp->l_value);
1332 } else if (sscanf(cp, scheck(cp, "%d"), &rp->r_loyear) != 1) {
1333 error(_("invalid starting year"));
1337 lp = byword(cp, end_years);
1338 rp->r_hiwasnum = lp == NULL;
1339 if (!rp->r_hiwasnum) switch ((int) lp->l_value) {
1341 rp->r_hiyear = INT_MIN;
1344 rp->r_hiyear = INT_MAX;
1347 rp->r_hiyear = rp->r_loyear;
1349 default: /* "cannot happen" */
1350 (void) fprintf(stderr,
1351 _("%s: panic: Invalid l_value %d\n"),
1352 progname, lp->l_value);
1354 } else if (sscanf(cp, scheck(cp, "%d"), &rp->r_hiyear) != 1) {
1355 error(_("invalid ending year"));
1358 if (rp->r_loyear > rp->r_hiyear) {
1359 error(_("starting year greater than ending year"));
1363 rp->r_yrtype = NULL;
1365 if (rp->r_loyear == rp->r_hiyear) {
1366 error(_("typed single year"));
1369 rp->r_yrtype = ecpyalloc(typep);
1373 ** Accept things such as:
1379 dp = ecpyalloc(dayp);
1380 if ((lp = byword(dp, lasts)) != NULL) {
1381 rp->r_dycode = DC_DOWLEQ;
1382 rp->r_wday = lp->l_value;
1383 rp->r_dayofmonth = len_months[1][rp->r_month];
1385 if ((ep = strchr(dp, '<')) != 0)
1386 rp->r_dycode = DC_DOWLEQ;
1387 else if ((ep = strchr(dp, '>')) != 0)
1388 rp->r_dycode = DC_DOWGEQ;
1391 rp->r_dycode = DC_DOM;
1393 if (rp->r_dycode != DC_DOM) {
1396 error(_("invalid day of month"));
1400 if ((lp = byword(dp, wday_names)) == NULL) {
1401 error(_("invalid weekday name"));
1405 rp->r_wday = lp->l_value;
1407 if (sscanf(ep, scheck(ep, "%d"), &rp->r_dayofmonth) != 1 ||
1408 rp->r_dayofmonth <= 0 ||
1409 (rp->r_dayofmonth > len_months[1][rp->r_month])) {
1410 error(_("invalid day of month"));
1426 for (i = 0, shift = 24; i < 4; ++i, shift -= 8)
1427 buf[i] = val >> shift;
1438 for (i = 0, shift = 56; i < 8; ++i, shift -= 8)
1439 buf[i] = val >> shift;
1450 (void) fwrite((void *) buf, (size_t) sizeof buf, (size_t) 1, fp);
1454 puttzcode64(val, fp)
1460 convert64(val, buf);
1461 (void) fwrite((void *) buf, (size_t) sizeof buf, (size_t) 1, fp);
1469 const zic_t a = ((const struct attype *) avp)->at;
1470 const zic_t b = ((const struct attype *) bvp)->at;
1472 return (a < b) ? -1 : (a > b);
1479 return INT32_MIN <= x && x <= INT32_MAX;
1483 writezone(name, string)
1484 const char * const name;
1485 const char * const string;
1489 register int leapcnt32, leapi32;
1490 register int timecnt32, timei32;
1492 static char * fullname;
1493 static const struct tzhead tzh0;
1494 static struct tzhead tzh;
1495 zic_t ats[TZ_MAX_TIMES];
1496 unsigned char types[TZ_MAX_TIMES];
1502 (void) qsort((void *) attypes, (size_t) timecnt,
1503 (size_t) sizeof *attypes, atcomp);
1513 while (fromi < timecnt && attypes[fromi].at < min_time)
1516 while (fromi < timecnt && attypes[fromi].type == 0)
1517 ++fromi; /* handled by default rule */
1518 for ( ; fromi < timecnt; ++fromi) {
1519 if (toi != 0 && ((attypes[fromi].at +
1520 gmtoffs[attypes[toi - 1].type]) <=
1521 (attypes[toi - 1].at + gmtoffs[toi == 1 ? 0
1522 : attypes[toi - 2].type]))) {
1523 attypes[toi - 1].type =
1524 attypes[fromi].type;
1528 attypes[toi - 1].type != attypes[fromi].type)
1529 attypes[toi++] = attypes[fromi];
1536 for (i = 0; i < timecnt; ++i) {
1537 ats[i] = attypes[i].at;
1538 types[i] = attypes[i].type;
1541 ** Correct for leap seconds.
1543 for (i = 0; i < timecnt; ++i) {
1546 if (ats[i] > trans[j] - corr[j]) {
1547 ats[i] = tadd(ats[i], corr[j]);
1552 ** Figure out 32-bit-limited starts and counts.
1554 timecnt32 = timecnt;
1556 leapcnt32 = leapcnt;
1558 while (timecnt32 > 0 && !is32(ats[timecnt32 - 1]))
1560 while (timecnt32 > 0 && !is32(ats[timei32])) {
1564 while (leapcnt32 > 0 && !is32(trans[leapcnt32 - 1]))
1566 while (leapcnt32 > 0 && !is32(trans[leapi32])) {
1570 fullname = erealloc(fullname,
1571 (int) (strlen(directory) + 1 + strlen(name) + 1));
1572 (void) sprintf(fullname, "%s/%s", directory, name);
1574 ** Remove old file, if any, to snap links.
1576 if (!itsdir(fullname) && remove(fullname) != 0 && errno != ENOENT) {
1577 const char *e = strerror(errno);
1579 (void) fprintf(stderr, _("%s: Can't remove %s: %s\n"),
1580 progname, fullname, e);
1583 if ((fp = fopen(fullname, "wb")) == NULL) {
1584 if (mkdirs(fullname) != 0)
1586 if ((fp = fopen(fullname, "wb")) == NULL) {
1587 const char *e = strerror(errno);
1589 (void) fprintf(stderr, _("%s: Can't create %s: %s\n"),
1590 progname, fullname, e);
1594 for (pass = 1; pass <= 2; ++pass) {
1595 register int thistimei, thistimecnt;
1596 register int thisleapi, thisleapcnt;
1597 register int thistimelim, thisleaplim;
1598 int writetype[TZ_MAX_TIMES];
1599 int typemap[TZ_MAX_TYPES];
1600 register int thistypecnt;
1601 char thischars[TZ_MAX_CHARS];
1603 int indmap[TZ_MAX_CHARS];
1606 thistimei = timei32;
1607 thistimecnt = timecnt32;
1608 thisleapi = leapi32;
1609 thisleapcnt = leapcnt32;
1612 thistimecnt = timecnt;
1614 thisleapcnt = leapcnt;
1616 thistimelim = thistimei + thistimecnt;
1617 thisleaplim = thisleapi + thisleapcnt;
1618 for (i = 0; i < typecnt; ++i)
1619 writetype[i] = thistimecnt == timecnt;
1620 if (thistimecnt == 0) {
1622 ** No transition times fall in the current
1623 ** (32- or 64-bit) window.
1626 writetype[typecnt - 1] = TRUE;
1628 for (i = thistimei - 1; i < thistimelim; ++i)
1630 writetype[types[i]] = TRUE;
1632 ** For America/Godthab and Antarctica/Palmer
1635 writetype[0] = TRUE;
1638 for (i = 0; i < typecnt; ++i)
1639 typemap[i] = writetype[i] ? thistypecnt++ : -1;
1640 for (i = 0; i < sizeof indmap / sizeof indmap[0]; ++i)
1643 for (i = 0; i < typecnt; ++i) {
1644 register char * thisabbr;
1648 if (indmap[abbrinds[i]] >= 0)
1650 thisabbr = &chars[abbrinds[i]];
1651 for (j = 0; j < thischarcnt; ++j)
1652 if (strcmp(&thischars[j], thisabbr) == 0)
1654 if (j == thischarcnt) {
1655 (void) strcpy(&thischars[(int) thischarcnt],
1657 thischarcnt += strlen(thisabbr) + 1;
1659 indmap[abbrinds[i]] = j;
1661 #define DO(field) (void) fwrite((void *) tzh.field, \
1662 (size_t) sizeof tzh.field, (size_t) 1, fp)
1664 (void) strncpy(tzh.tzh_magic, TZ_MAGIC, sizeof tzh.tzh_magic);
1665 tzh.tzh_version[0] = ZIC_VERSION;
1666 convert(eitol(thistypecnt), tzh.tzh_ttisgmtcnt);
1667 convert(eitol(thistypecnt), tzh.tzh_ttisstdcnt);
1668 convert(eitol(thisleapcnt), tzh.tzh_leapcnt);
1669 convert(eitol(thistimecnt), tzh.tzh_timecnt);
1670 convert(eitol(thistypecnt), tzh.tzh_typecnt);
1671 convert(eitol(thischarcnt), tzh.tzh_charcnt);
1682 for (i = thistimei; i < thistimelim; ++i)
1684 puttzcode((long) ats[i], fp);
1685 else puttzcode64(ats[i], fp);
1686 for (i = thistimei; i < thistimelim; ++i) {
1689 uc = typemap[types[i]];
1690 (void) fwrite((void *) &uc,
1695 for (i = 0; i < typecnt; ++i)
1697 puttzcode(gmtoffs[i], fp);
1698 (void) putc(isdsts[i], fp);
1699 (void) putc((unsigned char) indmap[abbrinds[i]], fp);
1701 if (thischarcnt != 0)
1702 (void) fwrite((void *) thischars,
1703 (size_t) sizeof thischars[0],
1704 (size_t) thischarcnt, fp);
1705 for (i = thisleapi; i < thisleaplim; ++i) {
1706 register zic_t todo;
1709 if (timecnt == 0 || trans[i] < ats[0]) {
1712 if (++j >= typecnt) {
1718 while (j < timecnt &&
1723 todo = tadd(trans[i], -gmtoffs[j]);
1724 } else todo = trans[i];
1726 puttzcode((long) todo, fp);
1727 else puttzcode64(todo, fp);
1728 puttzcode(corr[i], fp);
1730 for (i = 0; i < typecnt; ++i)
1732 (void) putc(ttisstds[i], fp);
1733 for (i = 0; i < typecnt; ++i)
1735 (void) putc(ttisgmts[i], fp);
1737 (void) fprintf(fp, "\n%s\n", string);
1738 if (ferror(fp) || fclose(fp)) {
1739 (void) fprintf(stderr, _("%s: Error writing %s\n"),
1740 progname, fullname);
1746 doabbr(abbr, format, letters, isdst, doquotes)
1748 const char * const format;
1749 const char * const letters;
1754 register char * slashp;
1757 slashp = strchr(format, '/');
1758 if (slashp == NULL) {
1759 if (letters == NULL)
1760 (void) strcpy(abbr, format);
1761 else (void) sprintf(abbr, format, letters);
1763 (void) strcpy(abbr, slashp + 1);
1765 if (slashp > format)
1766 (void) strncpy(abbr, format,
1767 (unsigned) (slashp - format));
1768 abbr[slashp - format] = '\0';
1772 for (cp = abbr; *cp != '\0'; ++cp)
1773 if (strchr("ABCDEFGHIJKLMNOPQRSTUVWXYZ", *cp) == NULL &&
1774 strchr("abcdefghijklmnopqrstuvwxyz", *cp) == NULL)
1777 if (len > 0 && *cp == '\0')
1779 abbr[len + 2] = '\0';
1780 abbr[len + 1] = '>';
1781 for ( ; len > 0; --len)
1782 abbr[len] = abbr[len - 1];
1797 stringoffset(result, offset)
1802 register int minutes;
1803 register int seconds;
1807 (void) strcpy(result, "-");
1810 seconds = offset % SECSPERMIN;
1811 offset /= SECSPERMIN;
1812 minutes = offset % MINSPERHOUR;
1813 offset /= MINSPERHOUR;
1815 if (hours >= HOURSPERDAY) {
1819 (void) sprintf(end(result), "%d", hours);
1820 if (minutes != 0 || seconds != 0) {
1821 (void) sprintf(end(result), ":%02d", minutes);
1823 (void) sprintf(end(result), ":%02d", seconds);
1829 stringrule(result, rp, dstoff, gmtoff)
1831 const struct rule * const rp;
1837 result = end(result);
1838 if (rp->r_dycode == DC_DOM) {
1839 register int month, total;
1841 if (rp->r_dayofmonth == 29 && rp->r_month == TM_FEBRUARY)
1844 for (month = 0; month < rp->r_month; ++month)
1845 total += len_months[0][month];
1846 (void) sprintf(result, "J%d", total + rp->r_dayofmonth);
1850 if (rp->r_dycode == DC_DOWGEQ) {
1851 week = 1 + rp->r_dayofmonth / DAYSPERWEEK;
1852 if ((week - 1) * DAYSPERWEEK + 1 != rp->r_dayofmonth)
1854 } else if (rp->r_dycode == DC_DOWLEQ) {
1855 if (rp->r_dayofmonth == len_months[1][rp->r_month])
1858 week = 1 + rp->r_dayofmonth / DAYSPERWEEK;
1859 if (week * DAYSPERWEEK - 1 != rp->r_dayofmonth)
1862 } else return -1; /* "cannot happen" */
1863 (void) sprintf(result, "M%d.%d.%d",
1864 rp->r_month + 1, week, rp->r_wday);
1869 if (rp->r_todisstd && rp->r_stdoff == 0)
1875 if (tod != 2 * SECSPERMIN * MINSPERHOUR) {
1876 (void) strcat(result, "/");
1877 if (stringoffset(end(result), tod) != 0)
1884 stringzone(result, zpfirst, zonecount)
1886 const struct zone * const zpfirst;
1887 const int zonecount;
1889 register const struct zone * zp;
1890 register struct rule * rp;
1891 register struct rule * stdrp;
1892 register struct rule * dstrp;
1894 register const char * abbrvar;
1897 zp = zpfirst + zonecount - 1;
1898 stdrp = dstrp = NULL;
1899 for (i = 0; i < zp->z_nrules; ++i) {
1900 rp = &zp->z_rules[i];
1901 if (rp->r_hiwasnum || rp->r_hiyear != INT_MAX)
1903 if (rp->r_yrtype != NULL)
1905 if (rp->r_stdoff == 0) {
1915 if (stdrp == NULL && dstrp == NULL) {
1917 ** There are no rules running through "max".
1918 ** Let's find the latest rule.
1920 for (i = 0; i < zp->z_nrules; ++i) {
1921 rp = &zp->z_rules[i];
1922 if (stdrp == NULL || rp->r_hiyear > stdrp->r_hiyear ||
1923 (rp->r_hiyear == stdrp->r_hiyear &&
1924 rp->r_month > stdrp->r_month))
1927 if (stdrp != NULL && stdrp->r_stdoff != 0)
1928 return; /* We end up in DST (a POSIX no-no). */
1930 ** Horrid special case: if year is 2037,
1931 ** presume this is a zone handled on a year-by-year basis;
1932 ** do not try to apply a rule to the zone.
1934 if (stdrp != NULL && stdrp->r_hiyear == 2037)
1937 if (stdrp == NULL && zp->z_nrules != 0)
1939 abbrvar = (stdrp == NULL) ? "" : stdrp->r_abbrvar;
1940 doabbr(result, zp->z_format, abbrvar, FALSE, TRUE);
1941 if (stringoffset(end(result), -zp->z_gmtoff) != 0) {
1947 doabbr(end(result), zp->z_format, dstrp->r_abbrvar, TRUE, TRUE);
1948 if (dstrp->r_stdoff != SECSPERMIN * MINSPERHOUR)
1949 if (stringoffset(end(result),
1950 -(zp->z_gmtoff + dstrp->r_stdoff)) != 0) {
1954 (void) strcat(result, ",");
1955 if (stringrule(result, dstrp, dstrp->r_stdoff, zp->z_gmtoff) != 0) {
1959 (void) strcat(result, ",");
1960 if (stringrule(result, stdrp, dstrp->r_stdoff, zp->z_gmtoff) != 0) {
1967 outzone(zpfirst, zonecount)
1968 const struct zone * const zpfirst;
1969 const int zonecount;
1971 register const struct zone * zp;
1972 register struct rule * rp;
1974 register int usestart, useuntil;
1975 register zic_t starttime, untiltime;
1976 register long gmtoff;
1977 register long stdoff;
1979 register long startoff;
1980 register int startttisstd;
1981 register int startttisgmt;
1983 register char * startbuf;
1985 register char * envvar;
1986 register int max_abbr_len;
1987 register int max_envvar_len;
1989 max_abbr_len = 2 + max_format_len + max_abbrvar_len;
1990 max_envvar_len = 2 * max_abbr_len + 5 * 9;
1991 startbuf = emalloc(max_abbr_len + 1);
1992 ab = emalloc(max_abbr_len + 1);
1993 envvar = emalloc(max_envvar_len + 1);
1994 INITIALIZE(untiltime);
1995 INITIALIZE(starttime);
1997 ** Now. . .finally. . .generate some useful data!
2003 ** Thanks to Earl Chew
2004 ** for noting the need to unconditionally initialize startttisstd.
2006 startttisstd = FALSE;
2007 startttisgmt = FALSE;
2008 min_year = max_year = EPOCH_YEAR;
2010 updateminmax(leapminyear);
2011 updateminmax(leapmaxyear);
2013 for (i = 0; i < zonecount; ++i) {
2015 updateminmax(zp->z_untilrule.r_loyear);
2016 for (j = 0; j < zp->z_nrules; ++j) {
2017 rp = &zp->z_rules[j];
2019 updateminmax(rp->r_loyear);
2021 updateminmax(rp->r_hiyear);
2025 ** Generate lots of data if a rule can't cover all future times.
2027 stringzone(envvar, zpfirst, zonecount);
2028 if (noise && envvar[0] == '\0') {
2031 wp = ecpyalloc(_("no POSIX environment variable for zone"));
2032 wp = ecatalloc(wp, " ");
2033 wp = ecatalloc(wp, zpfirst->z_name);
2037 if (envvar[0] == '\0') {
2038 if (min_year >= INT_MIN + YEARSPERREPEAT)
2039 min_year -= YEARSPERREPEAT;
2040 else min_year = INT_MIN;
2041 if (max_year <= INT_MAX - YEARSPERREPEAT)
2042 max_year += YEARSPERREPEAT;
2043 else max_year = INT_MAX;
2046 ** For the benefit of older systems, generate data through 2037.
2048 if (max_year < 2037)
2050 for (i = 0; i < zonecount; ++i) {
2052 ** A guess that may well be corrected later.
2056 usestart = i > 0 && (zp - 1)->z_untiltime > min_time;
2057 useuntil = i < (zonecount - 1);
2058 if (useuntil && zp->z_untiltime <= min_time)
2060 gmtoff = zp->z_gmtoff;
2061 eat(zp->z_filename, zp->z_linenum);
2063 startoff = zp->z_gmtoff;
2064 if (zp->z_nrules == 0) {
2065 stdoff = zp->z_stdoff;
2066 doabbr(startbuf, zp->z_format,
2067 (char *) NULL, stdoff != 0, FALSE);
2068 type = addtype(oadd(zp->z_gmtoff, stdoff),
2069 startbuf, stdoff != 0, startttisstd,
2072 addtt(starttime, type);
2074 } else if (stdoff != 0)
2075 addtt(min_time, type);
2076 } else for (year = min_year; year <= max_year; ++year) {
2077 if (useuntil && year > zp->z_untilrule.r_hiyear)
2080 ** Mark which rules to do in the current year.
2081 ** For those to do, calculate rpytime(rp, year);
2083 for (j = 0; j < zp->z_nrules; ++j) {
2084 rp = &zp->z_rules[j];
2085 eats(zp->z_filename, zp->z_linenum,
2086 rp->r_filename, rp->r_linenum);
2087 rp->r_todo = year >= rp->r_loyear &&
2088 year <= rp->r_hiyear &&
2089 yearistype(year, rp->r_yrtype);
2091 rp->r_temp = rpytime(rp, year);
2095 register zic_t jtime, ktime;
2096 register long offset;
2101 ** Turn untiltime into UTC
2102 ** assuming the current gmtoff and
2105 untiltime = zp->z_untiltime;
2106 if (!zp->z_untilrule.r_todisgmt)
2107 untiltime = tadd(untiltime,
2109 if (!zp->z_untilrule.r_todisstd)
2110 untiltime = tadd(untiltime,
2114 ** Find the rule (of those to do, if any)
2115 ** that takes effect earliest in the year.
2118 for (j = 0; j < zp->z_nrules; ++j) {
2119 rp = &zp->z_rules[j];
2122 eats(zp->z_filename, zp->z_linenum,
2123 rp->r_filename, rp->r_linenum);
2124 offset = rp->r_todisgmt ? 0 : gmtoff;
2125 if (!rp->r_todisstd)
2126 offset = oadd(offset, stdoff);
2128 if (jtime == min_time ||
2131 jtime = tadd(jtime, -offset);
2132 if (k < 0 || jtime < ktime) {
2138 break; /* go on to next year */
2139 rp = &zp->z_rules[k];
2141 if (useuntil && ktime >= untiltime)
2143 stdoff = rp->r_stdoff;
2144 if (usestart && ktime == starttime)
2147 if (ktime < starttime) {
2148 startoff = oadd(zp->z_gmtoff,
2150 doabbr(startbuf, zp->z_format,
2156 if (*startbuf == '\0' &&
2157 startoff == oadd(zp->z_gmtoff,
2167 eats(zp->z_filename, zp->z_linenum,
2168 rp->r_filename, rp->r_linenum);
2169 doabbr(ab, zp->z_format, rp->r_abbrvar,
2170 rp->r_stdoff != 0, FALSE);
2171 offset = oadd(zp->z_gmtoff, rp->r_stdoff);
2172 type = addtype(offset, ab, rp->r_stdoff != 0,
2173 rp->r_todisstd, rp->r_todisgmt);
2178 if (*startbuf == '\0' &&
2179 zp->z_format != NULL &&
2180 strchr(zp->z_format, '%') == NULL &&
2181 strchr(zp->z_format, '/') == NULL)
2182 (void) strcpy(startbuf, zp->z_format);
2183 eat(zp->z_filename, zp->z_linenum);
2184 if (*startbuf == '\0')
2185 error(_("can't determine time zone abbreviation to use just after until time"));
2186 else addtt(starttime,
2187 addtype(startoff, startbuf,
2188 startoff != zp->z_gmtoff,
2193 ** Now we may get to set starttime for the next zone line.
2196 startttisstd = zp->z_untilrule.r_todisstd;
2197 startttisgmt = zp->z_untilrule.r_todisgmt;
2198 starttime = zp->z_untiltime;
2200 starttime = tadd(starttime, -stdoff);
2202 starttime = tadd(starttime, -gmtoff);
2205 writezone(zpfirst->z_name, envvar);
2212 addtt(starttime, type)
2213 const zic_t starttime;
2216 if (starttime <= min_time ||
2217 (timecnt == 1 && attypes[0].at < min_time)) {
2218 gmtoffs[0] = gmtoffs[type];
2219 isdsts[0] = isdsts[type];
2220 ttisstds[0] = ttisstds[type];
2221 ttisgmts[0] = ttisgmts[type];
2222 if (abbrinds[type] != 0)
2223 (void) strcpy(chars, &chars[abbrinds[type]]);
2225 charcnt = strlen(chars) + 1;
2230 if (timecnt >= TZ_MAX_TIMES) {
2231 error(_("too many transitions?!"));
2234 attypes[timecnt].at = starttime;
2235 attypes[timecnt].type = type;
2240 addtype(gmtoff, abbr, isdst, ttisstd, ttisgmt)
2242 const char * const abbr;
2249 if (isdst != TRUE && isdst != FALSE) {
2250 error(_("internal error - addtype called with bad isdst"));
2253 if (ttisstd != TRUE && ttisstd != FALSE) {
2254 error(_("internal error - addtype called with bad ttisstd"));
2257 if (ttisgmt != TRUE && ttisgmt != FALSE) {
2258 error(_("internal error - addtype called with bad ttisgmt"));
2262 ** See if there's already an entry for this zone type.
2263 ** If so, just return its index.
2265 for (i = 0; i < typecnt; ++i) {
2266 if (gmtoff == gmtoffs[i] && isdst == isdsts[i] &&
2267 strcmp(abbr, &chars[abbrinds[i]]) == 0 &&
2268 ttisstd == ttisstds[i] &&
2269 ttisgmt == ttisgmts[i])
2273 ** There isn't one; add a new one, unless there are already too
2276 if (typecnt >= TZ_MAX_TYPES) {
2277 error(_("too many local time types"));
2280 if (! (-1L - 2147483647L <= gmtoff && gmtoff <= 2147483647L)) {
2281 error(_("UTC offset out of range"));
2284 gmtoffs[i] = gmtoff;
2286 ttisstds[i] = ttisstd;
2287 ttisgmts[i] = ttisgmt;
2289 for (j = 0; j < charcnt; ++j)
2290 if (strcmp(&chars[j], abbr) == 0)
2300 leapadd(t, positive, rolling, count)
2308 if (leapcnt + (positive ? count : 1) > TZ_MAX_LEAPS) {
2309 error(_("too many leap seconds"));
2312 for (i = 0; i < leapcnt; ++i)
2313 if (t <= trans[i]) {
2314 if (t == trans[i]) {
2315 error(_("repeated leap second moment"));
2321 for (j = leapcnt; j > i; --j) {
2322 trans[j] = trans[j - 1];
2323 corr[j] = corr[j - 1];
2324 roll[j] = roll[j - 1];
2327 corr[i] = positive ? 1L : eitol(-count);
2330 } while (positive && --count != 0);
2337 register long last = 0;
2340 ** propagate leap seconds forward
2342 for (i = 0; i < leapcnt; ++i) {
2343 trans[i] = tadd(trans[i], last);
2344 last = corr[i] += last;
2349 yearistype(year, type)
2351 const char * const type;
2356 if (type == NULL || *type == '\0')
2358 buf = erealloc(buf, (int) (132 + strlen(yitcommand) + strlen(type)));
2359 (void) sprintf(buf, "%s %d %s", yitcommand, year, type);
2360 result = system(buf);
2361 if (WIFEXITED(result)) switch (WEXITSTATUS(result)) {
2367 error(_("Wild result from command execution"));
2368 (void) fprintf(stderr, _("%s: command was '%s', result was %d\n"),
2369 progname, buf, result);
2378 a = (unsigned char) a;
2379 return (isascii(a) && isupper(a)) ? tolower(a) : a;
2383 ciequal(ap, bp) /* case-insensitive equality */
2384 register const char * ap;
2385 register const char * bp;
2387 while (lowerit(*ap) == lowerit(*bp++))
2395 register const char * abbr;
2396 register const char * word;
2398 if (lowerit(*abbr) != lowerit(*word))
2401 while (*++abbr != '\0')
2405 } while (lowerit(*word++) != lowerit(*abbr));
2409 static const struct lookup *
2411 register const char * const word;
2412 register const struct lookup * const table;
2414 register const struct lookup * foundlp;
2415 register const struct lookup * lp;
2417 if (word == NULL || table == NULL)
2420 ** Look for exact match.
2422 for (lp = table; lp->l_word != NULL; ++lp)
2423 if (ciequal(word, lp->l_word))
2426 ** Look for inexact match.
2429 for (lp = table; lp->l_word != NULL; ++lp)
2430 if (itsabbr(word, lp->l_word)) {
2431 if (foundlp == NULL)
2433 else return NULL; /* multiple inexact matches */
2443 register char ** array;
2448 array = (char **) (void *)
2449 emalloc((int) ((strlen(cp) + 1) * sizeof *array));
2452 while (isascii((unsigned char) *cp) &&
2453 isspace((unsigned char) *cp))
2455 if (*cp == '\0' || *cp == '#')
2457 array[nsubs++] = dp = cp;
2459 if ((*dp = *cp++) != '"')
2461 else while ((*dp = *cp++) != '"')
2466 "Odd number of quotation marks"
2470 } while (*cp != '\0' && *cp != '#' &&
2471 (!isascii(*cp) || !isspace((unsigned char) *cp)));
2472 if (isascii(*cp) && isspace((unsigned char) *cp))
2476 array[nsubs] = NULL;
2488 if ((t2 > 0 && t <= t1) || (t2 < 0 && t >= t1)) {
2489 error(_("time overflow"));
2502 if (t1 == max_time && t2 > 0)
2504 if (t1 == min_time && t2 < 0)
2507 if ((t2 > 0 && t <= t1) || (t2 < 0 && t >= t1)) {
2508 error(_("time overflow"));
2515 ** Given a rule, and a year, compute the date - in seconds since January 1,
2516 ** 1970, 00:00 LOCAL time - in that year that the rule refers to.
2520 rpytime(rp, wantedy)
2521 register const struct rule * const rp;
2522 register const int wantedy;
2524 register int y, m, i;
2525 register long dayoff; /* with a nod to Margaret O. */
2528 if (wantedy == INT_MIN)
2530 if (wantedy == INT_MAX)
2535 while (wantedy != y) {
2537 i = len_years[isleap(y)];
2541 i = -len_years[isleap(y)];
2543 dayoff = oadd(dayoff, eitol(i));
2545 while (m != rp->r_month) {
2546 i = len_months[isleap(y)][m];
2547 dayoff = oadd(dayoff, eitol(i));
2550 i = rp->r_dayofmonth;
2551 if (m == TM_FEBRUARY && i == 29 && !isleap(y)) {
2552 if (rp->r_dycode == DC_DOWLEQ)
2555 error(_("use of 2/29 in non leap-year"));
2560 dayoff = oadd(dayoff, eitol(i));
2561 if (rp->r_dycode == DC_DOWGEQ || rp->r_dycode == DC_DOWLEQ) {
2564 #define LDAYSPERWEEK ((long) DAYSPERWEEK)
2565 wday = eitol(EPOCH_WDAY);
2567 ** Don't trust mod of negative numbers.
2570 wday = (wday + dayoff) % LDAYSPERWEEK;
2572 wday -= ((-dayoff) % LDAYSPERWEEK);
2574 wday += LDAYSPERWEEK;
2576 while (wday != eitol(rp->r_wday))
2577 if (rp->r_dycode == DC_DOWGEQ) {
2578 dayoff = oadd(dayoff, (long) 1);
2579 if (++wday >= LDAYSPERWEEK)
2583 dayoff = oadd(dayoff, (long) -1);
2585 wday = LDAYSPERWEEK - 1;
2588 if (i < 0 || i >= len_months[isleap(y)][m]) {
2590 warning(_("rule goes past start/end of month--\
2591 will not work with pre-2004 versions of zic"));
2594 if (dayoff < min_time / SECSPERDAY)
2596 if (dayoff > max_time / SECSPERDAY)
2598 t = (zic_t) dayoff * SECSPERDAY;
2599 return tadd(t, rp->r_tod);
2604 const char * const string;
2608 if (strcmp(string, GRANDPARENTED) != 0) {
2609 register const char * cp;
2613 ** Want one to ZIC_MAX_ABBR_LEN_WO_WARN alphabetics
2614 ** optionally followed by a + or - and a number from 1 to 14.
2618 while (isascii((unsigned char) *cp) &&
2619 isalpha((unsigned char) *cp))
2621 if (cp - string == 0)
2622 wp = _("time zone abbreviation lacks alphabetic at start");
2623 if (noise && cp - string > 3)
2624 wp = _("time zone abbreviation has more than 3 alphabetics");
2625 if (cp - string > ZIC_MAX_ABBR_LEN_WO_WARN)
2626 wp = _("time zone abbreviation has too many alphabetics");
2627 if (wp == NULL && (*cp == '+' || *cp == '-')) {
2629 if (isascii((unsigned char) *cp) &&
2630 isdigit((unsigned char) *cp))
2632 *cp >= '0' && *cp <= '4')
2636 wp = _("time zone abbreviation differs from POSIX standard");
2639 wp = ecatalloc(wp, " (");
2640 wp = ecatalloc(wp, string);
2641 wp = ecatalloc(wp, ")");
2646 i = strlen(string) + 1;
2647 if (charcnt + i > TZ_MAX_CHARS) {
2648 error(_("too many, or too long, time zone abbreviations"));
2651 (void) strcpy(&chars[charcnt], string);
2652 charcnt += eitol(i);
2659 register char * name;
2662 if (argname == NULL || *argname == '\0')
2664 cp = name = ecpyalloc(argname);
2665 while ((cp = strchr(cp + 1, '/')) != 0) {
2669 ** DOS drive specifier?
2671 if (isalpha((unsigned char) name[0]) &&
2672 name[1] == ':' && name[2] == '\0') {
2676 #endif /* !defined unix */
2677 if (!itsdir(name)) {
2679 ** It doesn't seem to exist, so we try to create it.
2680 ** Creation may fail because of the directory being
2681 ** created by some other multiprocessor, so we get
2682 ** to do extra checking.
2684 if (mkdir(name, MKDIR_UMASK) != 0) {
2685 const char *e = strerror(errno);
2687 if (errno != EEXIST || !itsdir(name)) {
2688 (void) fprintf(stderr,
2689 _("%s: Can't create directory %s: %s\n"),
2709 if ((i < 0 && l >= 0) || (i == 0 && l != 0) || (i > 0 && l <= 0)) {
2710 (void) fprintf(stderr,
2711 _("%s: %d did not sign extend correctly\n"),
2719 ** UNIX was a registered trademark of The Open Group in 2003.