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.