]>
sourceware.org Git - glibc.git/blob - timezone/zic.c
3 static char elsieid
[] = "@(#)zic.c 7.102";
4 #endif /* !defined NOID */
5 #endif /* !defined lint */
15 #define MKDIR_UMASK (S_IRUSR|S_IWUSR|S_IXUSR|S_IRGRP|S_IXGRP|S_IROTH|S_IXOTH)
17 #define MKDIR_UMASK 0755
21 ** On some ancient hosts, predicates like `isspace(C)' are defined
22 ** only if isascii(C) || C == EOF. Modern hosts obey the C Standard,
23 ** which says they are defined only if C == ((unsigned char) C) || C == EOF.
24 ** Neither the C Standard nor Posix require that `isascii' exist.
25 ** For portability, we check both ancient and modern requirements.
26 ** If isascii is not defined, the isascii check succeeds trivially.
34 const char * r_filename
;
38 int r_loyear
; /* for example, 1986 */
39 int r_hiyear
; /* for example, 1986 */
40 const char * r_yrtype
;
42 int r_month
; /* 0..11 */
44 int r_dycode
; /* see below */
48 long r_tod
; /* time from midnight */
49 int r_todisstd
; /* above is standard time if TRUE */
50 /* or wall clock time if FALSE */
51 int r_todisgmt
; /* above is GMT if TRUE */
52 /* or local time if FALSE */
53 long r_stdoff
; /* offset from standard time */
54 const char * r_abbrvar
; /* variable part of abbreviation */
56 int r_todo
; /* a rule to do (used in outzone) */
57 time_t r_temp
; /* used in outzone */
61 ** r_dycode r_dayofmonth r_wday
64 #define DC_DOM 0 /* 1..31 */ /* unused */
65 #define DC_DOWGEQ 1 /* 1..31 */ /* 0..6 (Sun..Sat) */
66 #define DC_DOWLEQ 2 /* 1..31 */ /* 0..6 (Sun..Sat) */
69 const char * z_filename
;
75 const char * z_format
;
79 struct rule
* z_rules
;
82 struct rule z_untilrule
;
86 extern int getopt
P((int argc
, char * const argv
[],
87 const char * options
));
88 extern int link
P((const char * fromname
, const char * toname
));
92 static void addtt
P((time_t starttime
, int type
));
93 static int addtype
P((long gmtoff
, const char * abbr
, int isdst
,
94 int ttisstd
, int ttisgmt
));
95 static void leapadd
P((time_t t
, int positive
, int rolling
, int count
));
96 static void adjleap
P((void));
97 static void associate
P((void));
98 static int ciequal
P((const char * ap
, const char * bp
));
99 static void convert
P((long val
, char * buf
));
100 static void dolink
P((const char * fromfile
, const char * tofile
));
101 static void doabbr
P((char * abbr
, const char * format
,
102 const char * letters
, int isdst
));
103 static void eat
P((const char * name
, int num
));
104 static void eats
P((const char * name
, int num
,
105 const char * rname
, int rnum
));
106 static long eitol
P((int i
));
107 static void error
P((const char * message
));
108 static char ** getfields
P((char * buf
));
109 static long gethms
P((const char * string
, const char * errstrng
,
111 static void infile
P((const char * filename
));
112 static void inleap
P((char ** fields
, int nfields
));
113 static void inlink
P((char ** fields
, int nfields
));
114 static void inrule
P((char ** fields
, int nfields
));
115 static int inzcont
P((char ** fields
, int nfields
));
116 static int inzone
P((char ** fields
, int nfields
));
117 static int inzsub
P((char ** fields
, int nfields
, int iscont
));
118 static int itsabbr
P((const char * abbr
, const char * word
));
119 static int itsdir
P((const char * name
));
120 static int lowerit
P((int c
));
121 static char * memcheck
P((char * tocheck
));
122 static int mkdirs
P((char * filename
));
123 static void newabbr
P((const char * abbr
));
124 static long oadd
P((long t1
, long t2
));
125 static void outzone
P((const struct zone
* zp
, int ntzones
));
126 static void puttzcode
P((long code
, FILE * fp
));
127 static int rcomp
P((const void * leftp
, const void * rightp
));
128 static time_t rpytime
P((const struct rule
* rp
, int wantedy
));
129 static void rulesub
P((struct rule
* rp
,
130 const char * loyearp
, const char * hiyearp
,
131 const char * typep
, const char * monthp
,
132 const char * dayp
, const char * timep
));
133 static void setboundaries
P((void));
134 static time_t tadd
P((time_t t1
, long t2
));
135 static void usage
P((void));
136 static void writezone
P((const char * name
));
137 static int yearistype
P((int year
, const char * type
));
139 #if !(HAVE_STRERROR - 0)
140 static char * strerror
P((int));
141 #endif /* !(HAVE_STRERROR - 0) */
145 static const char * filename
;
148 static time_t max_time
;
150 static int max_year_representable
;
151 static time_t min_time
;
153 static int min_year_representable
;
155 static const char * rfilename
;
157 static const char * progname
;
171 ** Which fields are which on a Zone line.
179 #define ZF_TILMONTH 6
182 #define ZONE_MINFIELDS 5
183 #define ZONE_MAXFIELDS 9
186 ** Which fields are which on a Zone continuation line.
192 #define ZFC_TILYEAR 3
193 #define ZFC_TILMONTH 4
195 #define ZFC_TILTIME 6
196 #define ZONEC_MINFIELDS 3
197 #define ZONEC_MAXFIELDS 7
200 ** Which files are which on a Rule line.
212 #define RULE_FIELDS 10
215 ** Which fields are which on a Link line.
220 #define LINK_FIELDS 3
223 ** Which fields are which on a Leap line.
232 #define LEAP_FIELDS 7
242 static struct rule
* rules
;
243 static int nrules
; /* number of rules */
245 static struct zone
* zones
;
246 static int nzones
; /* number of zones */
249 const char * l_filename
;
255 static struct link
* links
;
263 static struct lookup
const * byword
P((const char * string
,
264 const struct lookup
* lp
));
266 static struct lookup
const line_codes
[] = {
274 static struct lookup
const mon_names
[] = {
275 { "January", TM_JANUARY
},
276 { "February", TM_FEBRUARY
},
277 { "March", TM_MARCH
},
278 { "April", TM_APRIL
},
282 { "August", TM_AUGUST
},
283 { "September", TM_SEPTEMBER
},
284 { "October", TM_OCTOBER
},
285 { "November", TM_NOVEMBER
},
286 { "December", TM_DECEMBER
},
290 static struct lookup
const wday_names
[] = {
291 { "Sunday", TM_SUNDAY
},
292 { "Monday", TM_MONDAY
},
293 { "Tuesday", TM_TUESDAY
},
294 { "Wednesday", TM_WEDNESDAY
},
295 { "Thursday", TM_THURSDAY
},
296 { "Friday", TM_FRIDAY
},
297 { "Saturday", TM_SATURDAY
},
301 static struct lookup
const lasts
[] = {
302 { "last-Sunday", TM_SUNDAY
},
303 { "last-Monday", TM_MONDAY
},
304 { "last-Tuesday", TM_TUESDAY
},
305 { "last-Wednesday", TM_WEDNESDAY
},
306 { "last-Thursday", TM_THURSDAY
},
307 { "last-Friday", TM_FRIDAY
},
308 { "last-Saturday", TM_SATURDAY
},
312 static struct lookup
const begin_years
[] = {
313 { "minimum", YR_MINIMUM
},
314 { "maximum", YR_MAXIMUM
},
318 static struct lookup
const end_years
[] = {
319 { "minimum", YR_MINIMUM
},
320 { "maximum", YR_MAXIMUM
},
325 static struct lookup
const leap_types
[] = {
327 { "Stationary", FALSE
},
331 static const int len_months
[2][MONSPERYEAR
] = {
332 { 31, 28, 31, 30, 31, 30, 31, 31, 30, 31, 30, 31 },
333 { 31, 29, 31, 30, 31, 30, 31, 31, 30, 31, 30, 31 }
336 static const int len_years
[2] = {
337 DAYSPERNYEAR
, DAYSPERLYEAR
340 static struct attype
{
343 } attypes
[TZ_MAX_TIMES
];
344 static long gmtoffs
[TZ_MAX_TYPES
];
345 static char isdsts
[TZ_MAX_TYPES
];
346 static unsigned char abbrinds
[TZ_MAX_TYPES
];
347 static char ttisstds
[TZ_MAX_TYPES
];
348 static char ttisgmts
[TZ_MAX_TYPES
];
349 static char chars
[TZ_MAX_CHARS
];
350 static time_t trans
[TZ_MAX_LEAPS
];
351 static long corr
[TZ_MAX_LEAPS
];
352 static char roll
[TZ_MAX_LEAPS
];
355 ** Memory allocation.
363 const char *e
= strerror(errno
);
365 (void) fprintf(stderr
, _("%s: Memory exhausted: %s\n"),
367 (void) exit(EXIT_FAILURE
);
372 #define emalloc(size) memcheck(imalloc(size))
373 #define erealloc(ptr, size) memcheck(irealloc((ptr), (size)))
374 #define ecpyalloc(ptr) memcheck(icpyalloc(ptr))
375 #define ecatalloc(oldp, newp) memcheck(icatalloc((oldp), (newp)))
381 #if !(HAVE_STRERROR - 0)
386 extern char * sys_errlist
[];
389 return (errnum
> 0 && errnum
<= sys_nerr
) ?
390 sys_errlist
[errnum
] : _("Unknown system error");
392 #endif /* !(HAVE_STRERROR - 0) */
395 eats(name
, num
, rname
, rnum
)
396 const char * const name
;
398 const char * const rname
;
409 const char * const name
;
412 eats(name
, num
, (char *) NULL
, -1);
417 const char * const string
;
420 ** Match the format of "cc" to allow sh users to
421 ** zic ... 2>&1 | error -t "*" -v
424 (void) fprintf(stderr
, _("\"%s\", line %d: %s"),
425 filename
, linenum
, string
);
426 if (rfilename
!= NULL
)
427 (void) fprintf(stderr
, _(" (rule from \"%s\", line %d)"),
428 rfilename
, rlinenum
);
429 (void) fprintf(stderr
, "\n");
435 const char * const string
;
439 cp
= ecpyalloc(_("warning: "));
440 cp
= ecatalloc(cp
, string
);
449 (void) fprintf(stderr
, _("%s: usage is %s [ -s ] [ -v ] [ -l localtime ] [ -p posixrules ] \\\n\t[ -d directory ] [ -L leapseconds ] [ -y yearistype ] [ filename ... ]\n"),
451 (void) exit(EXIT_FAILURE
);
454 static const char * psxrules
;
455 static const char * lcltime
;
456 static const char * directory
;
457 static const char * leapsec
;
458 static const char * yitcommand
;
459 static int sflag
= FALSE
;
471 (void) umask(umask(S_IWGRP
| S_IWOTH
) | (S_IWGRP
| S_IWOTH
));
472 #endif /* defined unix */
474 (void) setlocale(LC_CTYPE
, "");
475 (void) setlocale(LC_MESSAGES
, "");
477 (void) bindtextdomain(TZ_DOMAIN
, TZ_DOMAINDIR
);
478 #endif /* defined TEXTDOMAINDIR */
479 (void) textdomain(TZ_DOMAIN
);
480 #endif /* HAVE_GETTEXT - 0 */
482 while ((c
= getopt(argc
, argv
, "d:l:p:L:vsy:")) != EOF
&& c
!= -1)
487 if (directory
== NULL
)
490 (void) fprintf(stderr
,
491 _("%s: More than one -d option specified\n"),
493 (void) exit(EXIT_FAILURE
);
500 (void) fprintf(stderr
,
501 _("%s: More than one -l option specified\n"),
503 (void) exit(EXIT_FAILURE
);
507 if (psxrules
== NULL
)
510 (void) fprintf(stderr
,
511 _("%s: More than one -p option specified\n"),
513 (void) exit(EXIT_FAILURE
);
517 if (yitcommand
== NULL
)
520 (void) fprintf(stderr
,
521 _("%s: More than one -y option specified\n"),
523 (void) exit(EXIT_FAILURE
);
530 (void) fprintf(stderr
,
531 _("%s: More than one -L option specified\n"),
533 (void) exit(EXIT_FAILURE
);
543 if (optind
== argc
- 1 && strcmp(argv
[optind
], "=") == 0)
544 usage(); /* usage message by request */
545 if (directory
== NULL
)
547 if (yitcommand
== NULL
)
548 yitcommand
= "yearistype";
552 if (optind
< argc
&& leapsec
!= NULL
) {
557 for (i
= optind
; i
< argc
; ++i
)
560 (void) exit(EXIT_FAILURE
);
562 for (i
= 0; i
< nzones
; i
= j
) {
564 ** Find the next non-continuation zone entry.
566 for (j
= i
+ 1; j
< nzones
&& zones
[j
].z_name
== NULL
; ++j
)
568 outzone(&zones
[i
], j
- i
);
573 for (i
= 0; i
< nlinks
; ++i
) {
574 eat(links
[i
].l_filename
, links
[i
].l_linenum
);
575 dolink(links
[i
].l_from
, links
[i
].l_to
);
577 if (lcltime
!= NULL
) {
578 eat("command line", 1);
579 dolink(lcltime
, TZDEFAULT
);
581 if (psxrules
!= NULL
) {
582 eat("command line", 1);
583 dolink(psxrules
, TZDEFRULES
);
585 return (errors
== 0) ? EXIT_SUCCESS
: EXIT_FAILURE
;
589 dolink(fromfile
, tofile
)
590 const char * const fromfile
;
591 const char * const tofile
;
593 register char * fromname
;
594 register char * toname
;
596 if (fromfile
[0] == '/')
597 fromname
= ecpyalloc(fromfile
);
599 fromname
= ecpyalloc(directory
);
600 fromname
= ecatalloc(fromname
, "/");
601 fromname
= ecatalloc(fromname
, fromfile
);
603 if (tofile
[0] == '/')
604 toname
= ecpyalloc(tofile
);
606 toname
= ecpyalloc(directory
);
607 toname
= ecatalloc(toname
, "/");
608 toname
= ecatalloc(toname
, tofile
);
611 ** We get to be careful here since
612 ** there's a fair chance of root running us.
615 (void) remove(toname
);
616 if (link(fromname
, toname
) != 0) {
619 if (mkdirs(toname
) != 0)
620 (void) exit(EXIT_FAILURE
);
622 result
= link(fromname
, toname
);
623 #if (HAVE_SYMLINK - 0)
625 const char *s
= tofile
;
626 register char *symlinkcontents
= NULL
;
627 while ((s
= strchr(s
+1, '/')) != NULL
)
628 symlinkcontents
= ecatalloc(symlinkcontents
, "../");
629 symlinkcontents
= ecatalloc(symlinkcontents
, fromname
);
631 result
= unlink(toname
);
632 if (result
!= 0 && errno
!= ENOENT
) {
633 const char *e
= strerror(errno
);
635 (void) fprintf(stderr
,
636 _("%s: Can't unlink %s: %s\n"),
637 progname
, toname
, e
);
638 (void) exit(EXIT_FAILURE
);
641 result
= symlink(symlinkcontents
, toname
);
643 warning(_("hard link failed, symbolic link used"));
644 ifree(symlinkcontents
);
648 const char *e
= strerror(errno
);
650 (void) fprintf(stderr
,
651 _("%s: Can't link from %s to %s: %s\n"),
652 progname
, fromname
, toname
, e
);
653 (void) exit(EXIT_FAILURE
);
661 #define INT_MAX ((int) (((unsigned)~0)>>1))
662 #endif /* !defined INT_MAX */
665 #define INT_MIN ((int) ~(((unsigned)~0)>>1))
666 #endif /* !defined INT_MIN */
669 ** The tz file format currently allows at most 32-bit quantities.
670 ** This restriction should be removed before signed 32-bit values
671 ** wrap around in 2038, but unfortunately this will require a
672 ** change to the tz file format.
675 #define MAX_BITS_IN_FILE 32
676 #define TIME_T_BITS_IN_FILE ((TYPE_BIT(time_t) < MAX_BITS_IN_FILE) ? TYPE_BIT(time_t) : MAX_BITS_IN_FILE)
679 setboundaries
P((void))
681 if (TYPE_SIGNED(time_t)) {
682 min_time
= ~ (time_t) 0;
683 min_time
<<= TIME_T_BITS_IN_FILE
- 1;
684 max_time
= ~ (time_t) 0 - min_time
;
689 max_time
= 2 - sflag
;
690 max_time
<<= TIME_T_BITS_IN_FILE
- 1;
693 min_year
= TM_YEAR_BASE
+ gmtime(&min_time
)->tm_year
;
694 max_year
= TM_YEAR_BASE
+ gmtime(&max_time
)->tm_year
;
695 min_year_representable
= min_year
;
696 max_year_representable
= max_year
;
701 const char * const name
;
703 register char * myname
;
706 myname
= ecpyalloc(name
);
707 myname
= ecatalloc(myname
, "/.");
708 accres
= access(myname
, F_OK
);
714 ** Associate sets of rules with zones.
718 ** Sort by rule name.
726 return strcmp(((const struct rule
*) cp1
)->r_name
,
727 ((const struct rule
*) cp2
)->r_name
);
733 register struct zone
* zp
;
734 register struct rule
* rp
;
735 register int base
, out
;
739 (void) qsort((void *) rules
, (size_t) nrules
,
740 (size_t) sizeof *rules
, rcomp
);
741 for (i
= 0; i
< nrules
- 1; ++i
) {
742 if (strcmp(rules
[i
].r_name
,
743 rules
[i
+ 1].r_name
) != 0)
745 if (strcmp(rules
[i
].r_filename
,
746 rules
[i
+ 1].r_filename
) == 0)
748 eat(rules
[i
].r_filename
, rules
[i
].r_linenum
);
749 warning(_("same rule name in multiple files"));
750 eat(rules
[i
+ 1].r_filename
, rules
[i
+ 1].r_linenum
);
751 warning(_("same rule name in multiple files"));
752 for (j
= i
+ 2; j
< nrules
; ++j
) {
753 if (strcmp(rules
[i
].r_name
,
754 rules
[j
].r_name
) != 0)
756 if (strcmp(rules
[i
].r_filename
,
757 rules
[j
].r_filename
) == 0)
759 if (strcmp(rules
[i
+ 1].r_filename
,
760 rules
[j
].r_filename
) == 0)
767 for (i
= 0; i
< nzones
; ++i
) {
772 for (base
= 0; base
< nrules
; base
= out
) {
774 for (out
= base
+ 1; out
< nrules
; ++out
)
775 if (strcmp(rp
->r_name
, rules
[out
].r_name
) != 0)
777 for (i
= 0; i
< nzones
; ++i
) {
779 if (strcmp(zp
->z_rule
, rp
->r_name
) != 0)
782 zp
->z_nrules
= out
- base
;
785 for (i
= 0; i
< nzones
; ++i
) {
787 if (zp
->z_nrules
== 0) {
789 ** Maybe we have a local standard time offset.
791 eat(zp
->z_filename
, zp
->z_linenum
);
792 zp
->z_stdoff
= gethms(zp
->z_rule
, _("unruly zone"),
795 ** Note, though, that if there's no rule,
796 ** a '%s' in the format is a bad thing.
798 if (strchr(zp
->z_format
, '%') != 0)
799 error(_("%s in ruleless zone"));
803 (void) exit(EXIT_FAILURE
);
811 register char ** fields
;
813 register const struct lookup
* lp
;
814 register int nfields
;
815 register int wantcont
;
819 if (strcmp(name
, "-") == 0) {
820 name
= _("standard input");
822 } else if ((fp
= fopen(name
, "r")) == NULL
) {
823 const char *e
= strerror(errno
);
825 (void) fprintf(stderr
, _("%s: Can't open %s: %s\n"),
827 (void) exit(EXIT_FAILURE
);
830 for (num
= 1; ; ++num
) {
832 if (fgets(buf
, (int) sizeof buf
, fp
) != buf
)
834 cp
= strchr(buf
, '\n');
836 error(_("line too long"));
837 (void) exit(EXIT_FAILURE
);
840 fields
= getfields(buf
);
842 while (fields
[nfields
] != NULL
) {
845 if (strcmp(fields
[nfields
], "-") == 0)
846 fields
[nfields
] = &nada
;
851 } else if (wantcont
) {
852 wantcont
= inzcont(fields
, nfields
);
854 lp
= byword(fields
[0], line_codes
);
856 error(_("input line of unknown type"));
857 else switch ((int) (lp
->l_value
)) {
859 inrule(fields
, nfields
);
863 wantcont
= inzone(fields
, nfields
);
866 inlink(fields
, nfields
);
871 (void) fprintf(stderr
,
872 _("%s: Leap line in non leap seconds file %s\n"),
874 else inleap(fields
, nfields
);
877 default: /* "cannot happen" */
878 (void) fprintf(stderr
,
879 _("%s: panic: Invalid l_value %d\n"),
880 progname
, lp
->l_value
);
881 (void) exit(EXIT_FAILURE
);
884 ifree((char *) fields
);
887 (void) fprintf(stderr
, _("%s: Error reading %s\n"),
889 (void) exit(EXIT_FAILURE
);
891 if (fp
!= stdin
&& fclose(fp
)) {
892 const char *e
= strerror(errno
);
894 (void) fprintf(stderr
, _("%s: Error closing %s: %s\n"),
895 progname
, filename
, e
);
896 (void) exit(EXIT_FAILURE
);
899 error(_("expected continuation line not found"));
903 ** Convert a string of one of the forms
904 ** h -h hh:mm -hh:mm hh:mm:ss -hh:mm:ss
905 ** into a number of seconds.
906 ** A null string maps to zero.
907 ** Call error with errstring and return zero on errors.
911 gethms(string
, errstring
, signable
)
913 const char * const errstring
;
916 int hh
, mm
, ss
, sign
;
918 if (string
== NULL
|| *string
== '\0')
922 else if (*string
== '-') {
926 if (sscanf(string
, scheck(string
, "%d"), &hh
) == 1)
928 else if (sscanf(string
, scheck(string
, "%d:%d"), &hh
, &mm
) == 2)
930 else if (sscanf(string
, scheck(string
, "%d:%d:%d"),
931 &hh
, &mm
, &ss
) != 3) {
935 if ((hh
< 0 || hh
>= HOURSPERDAY
||
936 mm
< 0 || mm
>= MINSPERHOUR
||
937 ss
< 0 || ss
> SECSPERMIN
) &&
938 !(hh
== HOURSPERDAY
&& mm
== 0 && ss
== 0)) {
943 (eitol(hh
* MINSPERHOUR
+ mm
) *
944 eitol(SECSPERMIN
) + eitol(ss
));
948 inrule(fields
, nfields
)
949 register char ** const fields
;
952 static struct rule r
;
954 if (nfields
!= RULE_FIELDS
) {
955 error(_("wrong number of fields on Rule line"));
958 if (*fields
[RF_NAME
] == '\0') {
959 error(_("nameless rule"));
962 r
.r_filename
= filename
;
963 r
.r_linenum
= linenum
;
964 r
.r_stdoff
= gethms(fields
[RF_STDOFF
], _("invalid saved time"), TRUE
);
965 rulesub(&r
, fields
[RF_LOYEAR
], fields
[RF_HIYEAR
], fields
[RF_COMMAND
],
966 fields
[RF_MONTH
], fields
[RF_DAY
], fields
[RF_TOD
]);
967 r
.r_name
= ecpyalloc(fields
[RF_NAME
]);
968 r
.r_abbrvar
= ecpyalloc(fields
[RF_ABBRVAR
]);
969 rules
= (struct rule
*) (void *) erealloc((char *) rules
,
970 (int) ((nrules
+ 1) * sizeof *rules
));
975 inzone(fields
, nfields
)
976 register char ** const fields
;
982 if (nfields
< ZONE_MINFIELDS
|| nfields
> ZONE_MAXFIELDS
) {
983 error(_("wrong number of fields on Zone line"));
986 if (strcmp(fields
[ZF_NAME
], TZDEFAULT
) == 0 && lcltime
!= NULL
) {
987 buf
= erealloc(buf
, (int) (132 + strlen(TZDEFAULT
)));
989 _("\"Zone %s\" line and -l option are mutually exclusive"),
994 if (strcmp(fields
[ZF_NAME
], TZDEFRULES
) == 0 && psxrules
!= NULL
) {
995 buf
= erealloc(buf
, (int) (132 + strlen(TZDEFRULES
)));
997 _("\"Zone %s\" line and -p option are mutually exclusive"),
1002 for (i
= 0; i
< nzones
; ++i
)
1003 if (zones
[i
].z_name
!= NULL
&&
1004 strcmp(zones
[i
].z_name
, fields
[ZF_NAME
]) == 0) {
1005 buf
= erealloc(buf
, (int) (132 +
1006 strlen(fields
[ZF_NAME
]) +
1007 strlen(zones
[i
].z_filename
)));
1009 _("duplicate zone name %s (file \"%s\", line %d)"),
1011 zones
[i
].z_filename
,
1012 zones
[i
].z_linenum
);
1016 return inzsub(fields
, nfields
, FALSE
);
1020 inzcont(fields
, nfields
)
1021 register char ** const fields
;
1024 if (nfields
< ZONEC_MINFIELDS
|| nfields
> ZONEC_MAXFIELDS
) {
1025 error(_("wrong number of fields on Zone continuation line"));
1028 return inzsub(fields
, nfields
, TRUE
);
1032 inzsub(fields
, nfields
, iscont
)
1033 register char ** const fields
;
1038 static struct zone z
;
1039 register int i_gmtoff
, i_rule
, i_format
;
1040 register int i_untilyear
, i_untilmonth
;
1041 register int i_untilday
, i_untiltime
;
1042 register int hasuntil
;
1045 i_gmtoff
= ZFC_GMTOFF
;
1047 i_format
= ZFC_FORMAT
;
1048 i_untilyear
= ZFC_TILYEAR
;
1049 i_untilmonth
= ZFC_TILMONTH
;
1050 i_untilday
= ZFC_TILDAY
;
1051 i_untiltime
= ZFC_TILTIME
;
1054 i_gmtoff
= ZF_GMTOFF
;
1056 i_format
= ZF_FORMAT
;
1057 i_untilyear
= ZF_TILYEAR
;
1058 i_untilmonth
= ZF_TILMONTH
;
1059 i_untilday
= ZF_TILDAY
;
1060 i_untiltime
= ZF_TILTIME
;
1061 z
.z_name
= ecpyalloc(fields
[ZF_NAME
]);
1063 z
.z_filename
= filename
;
1064 z
.z_linenum
= linenum
;
1065 z
.z_gmtoff
= gethms(fields
[i_gmtoff
], _("invalid UTC offset"), TRUE
);
1066 if ((cp
= strchr(fields
[i_format
], '%')) != 0) {
1067 if (*++cp
!= 's' || strchr(cp
, '%') != 0) {
1068 error(_("invalid abbreviation format"));
1072 z
.z_rule
= ecpyalloc(fields
[i_rule
]);
1073 z
.z_format
= ecpyalloc(fields
[i_format
]);
1074 hasuntil
= nfields
> i_untilyear
;
1076 z
.z_untilrule
.r_filename
= filename
;
1077 z
.z_untilrule
.r_linenum
= linenum
;
1078 rulesub(&z
.z_untilrule
,
1079 fields
[i_untilyear
],
1082 (nfields
> i_untilmonth
) ?
1083 fields
[i_untilmonth
] : "Jan",
1084 (nfields
> i_untilday
) ? fields
[i_untilday
] : "1",
1085 (nfields
> i_untiltime
) ? fields
[i_untiltime
] : "0");
1086 z
.z_untiltime
= rpytime(&z
.z_untilrule
,
1087 z
.z_untilrule
.r_loyear
);
1088 if (iscont
&& nzones
> 0 &&
1089 z
.z_untiltime
> min_time
&&
1090 z
.z_untiltime
< max_time
&&
1091 zones
[nzones
- 1].z_untiltime
> min_time
&&
1092 zones
[nzones
- 1].z_untiltime
< max_time
&&
1093 zones
[nzones
- 1].z_untiltime
>= z
.z_untiltime
) {
1094 error(_("Zone continuation line end time is not after end time of previous line"));
1098 zones
= (struct zone
*) (void *) erealloc((char *) zones
,
1099 (int) ((nzones
+ 1) * sizeof *zones
));
1100 zones
[nzones
++] = z
;
1102 ** If there was an UNTIL field on this line,
1103 ** there's more information about the zone on the next line.
1109 inleap(fields
, nfields
)
1110 register char ** const fields
;
1113 register const char * cp
;
1114 register const struct lookup
* lp
;
1116 int year
, month
, day
;
1120 if (nfields
!= LEAP_FIELDS
) {
1121 error(_("wrong number of fields on Leap line"));
1125 cp
= fields
[LP_YEAR
];
1126 if (sscanf(cp
, scheck(cp
, "%d"), &year
) != 1) {
1130 error(_("invalid leaping year"));
1136 i
= len_years
[isleap(j
)];
1140 i
= -len_years
[isleap(j
)];
1142 dayoff
= oadd(dayoff
, eitol(i
));
1144 if ((lp
= byword(fields
[LP_MONTH
], mon_names
)) == NULL
) {
1145 error(_("invalid month name"));
1148 month
= lp
->l_value
;
1150 while (j
!= month
) {
1151 i
= len_months
[isleap(year
)][j
];
1152 dayoff
= oadd(dayoff
, eitol(i
));
1155 cp
= fields
[LP_DAY
];
1156 if (sscanf(cp
, scheck(cp
, "%d"), &day
) != 1 ||
1157 day
<= 0 || day
> len_months
[isleap(year
)][month
]) {
1158 error(_("invalid day of month"));
1161 dayoff
= oadd(dayoff
, eitol(day
- 1));
1162 if (dayoff
< 0 && !TYPE_SIGNED(time_t)) {
1163 error(_("time before zero"));
1166 t
= (time_t) dayoff
* SECSPERDAY
;
1168 ** Cheap overflow check.
1170 if (t
/ SECSPERDAY
!= dayoff
) {
1171 error(_("time overflow"));
1174 tod
= gethms(fields
[LP_TIME
], _("invalid time of day"), FALSE
);
1175 cp
= fields
[LP_CORR
];
1177 register int positive
;
1180 if (strcmp(cp
, "") == 0) { /* infile() turns "-" into "" */
1183 } else if (strcmp(cp
, "--") == 0) {
1186 } else if (strcmp(cp
, "+") == 0) {
1189 } else if (strcmp(cp
, "++") == 0) {
1193 error(_("illegal CORRECTION field on Leap line"));
1196 if ((lp
= byword(fields
[LP_ROLL
], leap_types
)) == NULL
) {
1197 error(_("illegal Rolling/Stationary field on Leap line"));
1200 leapadd(tadd(t
, tod
), positive
, lp
->l_value
, count
);
1205 inlink(fields
, nfields
)
1206 register char ** const fields
;
1211 if (nfields
!= LINK_FIELDS
) {
1212 error(_("wrong number of fields on Link line"));
1215 if (*fields
[LF_FROM
] == '\0') {
1216 error(_("blank FROM field on Link line"));
1219 if (*fields
[LF_TO
] == '\0') {
1220 error(_("blank TO field on Link line"));
1223 l
.l_filename
= filename
;
1224 l
.l_linenum
= linenum
;
1225 l
.l_from
= ecpyalloc(fields
[LF_FROM
]);
1226 l
.l_to
= ecpyalloc(fields
[LF_TO
]);
1227 links
= (struct link
*) (void *) erealloc((char *) links
,
1228 (int) ((nlinks
+ 1) * sizeof *links
));
1229 links
[nlinks
++] = l
;
1233 rulesub(rp
, loyearp
, hiyearp
, typep
, monthp
, dayp
, timep
)
1234 register struct rule
* const rp
;
1235 const char * const loyearp
;
1236 const char * const hiyearp
;
1237 const char * const typep
;
1238 const char * const monthp
;
1239 const char * const dayp
;
1240 const char * const timep
;
1242 register const struct lookup
* lp
;
1243 register const char * cp
;
1247 if ((lp
= byword(monthp
, mon_names
)) == NULL
) {
1248 error(_("invalid month name"));
1251 rp
->r_month
= lp
->l_value
;
1252 rp
->r_todisstd
= FALSE
;
1253 rp
->r_todisgmt
= FALSE
;
1254 dp
= ecpyalloc(timep
);
1256 ep
= dp
+ strlen(dp
) - 1;
1257 switch (lowerit(*ep
)) {
1258 case 's': /* Standard */
1259 rp
->r_todisstd
= TRUE
;
1260 rp
->r_todisgmt
= FALSE
;
1263 case 'w': /* Wall */
1264 rp
->r_todisstd
= FALSE
;
1265 rp
->r_todisgmt
= FALSE
;
1268 case 'g': /* Greenwich */
1269 case 'u': /* Universal */
1270 case 'z': /* Zulu */
1271 rp
->r_todisstd
= TRUE
;
1272 rp
->r_todisgmt
= TRUE
;
1277 rp
->r_tod
= gethms(dp
, _("invalid time of day"), FALSE
);
1283 lp
= byword(cp
, begin_years
);
1284 if (lp
!= NULL
) switch ((int) lp
->l_value
) {
1286 rp
->r_loyear
= INT_MIN
;
1289 rp
->r_loyear
= INT_MAX
;
1291 default: /* "cannot happen" */
1292 (void) fprintf(stderr
,
1293 _("%s: panic: Invalid l_value %d\n"),
1294 progname
, lp
->l_value
);
1295 (void) exit(EXIT_FAILURE
);
1296 } else if (sscanf(cp
, scheck(cp
, "%d"), &rp
->r_loyear
) != 1) {
1297 error(_("invalid starting year"));
1300 if (rp
->r_loyear
< min_year_representable
)
1301 warning(_("starting year too low to be represented"));
1302 else if (rp
->r_loyear
> max_year_representable
)
1303 warning(_("starting year too high to be represented"));
1306 if ((lp
= byword(cp
, end_years
)) != NULL
) switch ((int) lp
->l_value
) {
1308 rp
->r_hiyear
= INT_MIN
;
1311 rp
->r_hiyear
= INT_MAX
;
1314 rp
->r_hiyear
= rp
->r_loyear
;
1316 default: /* "cannot happen" */
1317 (void) fprintf(stderr
,
1318 _("%s: panic: Invalid l_value %d\n"),
1319 progname
, lp
->l_value
);
1320 (void) exit(EXIT_FAILURE
);
1321 } else if (sscanf(cp
, scheck(cp
, "%d"), &rp
->r_hiyear
) != 1) {
1322 error(_("invalid ending year"));
1325 if (rp
->r_loyear
< min_year_representable
)
1326 warning(_("starting year too low to be represented"));
1327 else if (rp
->r_loyear
> max_year_representable
)
1328 warning(_("starting year too high to be represented"));
1330 if (rp
->r_loyear
> rp
->r_hiyear
) {
1331 error(_("starting year greater than ending year"));
1335 rp
->r_yrtype
= NULL
;
1337 if (rp
->r_loyear
== rp
->r_hiyear
) {
1338 error(_("typed single year"));
1341 rp
->r_yrtype
= ecpyalloc(typep
);
1343 if (rp
->r_loyear
< min_year
&& rp
->r_loyear
> 0)
1344 min_year
= rp
->r_loyear
;
1347 ** Accept things such as:
1353 dp
= ecpyalloc(dayp
);
1354 if ((lp
= byword(dp
, lasts
)) != NULL
) {
1355 rp
->r_dycode
= DC_DOWLEQ
;
1356 rp
->r_wday
= lp
->l_value
;
1357 rp
->r_dayofmonth
= len_months
[1][rp
->r_month
];
1359 if ((ep
= strchr(dp
, '<')) != 0)
1360 rp
->r_dycode
= DC_DOWLEQ
;
1361 else if ((ep
= strchr(dp
, '>')) != 0)
1362 rp
->r_dycode
= DC_DOWGEQ
;
1365 rp
->r_dycode
= DC_DOM
;
1367 if (rp
->r_dycode
!= DC_DOM
) {
1370 error(_("invalid day of month"));
1374 if ((lp
= byword(dp
, wday_names
)) == NULL
) {
1375 error(_("invalid weekday name"));
1379 rp
->r_wday
= lp
->l_value
;
1381 if (sscanf(ep
, scheck(ep
, "%d"), &rp
->r_dayofmonth
) != 1 ||
1382 rp
->r_dayofmonth
<= 0 ||
1383 (rp
->r_dayofmonth
> len_months
[1][rp
->r_month
])) {
1384 error(_("invalid day of month"));
1398 register long shift
;
1400 for (i
= 0, shift
= 24; i
< 4; ++i
, shift
-= 8)
1401 buf
[i
] = val
>> shift
;
1412 (void) fwrite((void *) buf
, (size_t) sizeof buf
, (size_t) 1, fp
);
1420 if (((struct attype
*) avp
)->at
< ((struct attype
*) bvp
)->at
)
1422 else if (((struct attype
*) avp
)->at
> ((struct attype
*) bvp
)->at
)
1429 const char * const name
;
1433 static char * fullname
;
1434 static struct tzhead tzh
;
1435 time_t ats
[TZ_MAX_TIMES
];
1436 unsigned char types
[TZ_MAX_TIMES
];
1442 (void) qsort((void *) attypes
, (size_t) timecnt
,
1443 (size_t) sizeof *attypes
, atcomp
);
1453 while (fromi
< timecnt
&& attypes
[fromi
].at
< min_time
)
1456 while (fromi
< timecnt
&& attypes
[fromi
].type
== 0)
1457 ++fromi
; /* handled by default rule */
1458 for ( ; fromi
< timecnt
; ++fromi
) {
1460 && ((attypes
[fromi
].at
1461 + gmtoffs
[attypes
[toi
- 1].type
])
1462 <= (attypes
[toi
- 1].at
1463 + gmtoffs
[toi
== 1 ? 0
1464 : attypes
[toi
- 2].type
]))) {
1465 attypes
[toi
- 1].type
= attypes
[fromi
].type
;
1469 attypes
[toi
- 1].type
!= attypes
[fromi
].type
)
1470 attypes
[toi
++] = attypes
[fromi
];
1477 for (i
= 0; i
< timecnt
; ++i
) {
1478 ats
[i
] = attypes
[i
].at
;
1479 types
[i
] = attypes
[i
].type
;
1481 fullname
= erealloc(fullname
,
1482 (int) (strlen(directory
) + 1 + strlen(name
) + 1));
1483 (void) sprintf(fullname
, "%s/%s", directory
, name
);
1485 ** Remove old file, if any, to snap links.
1487 if (!itsdir(fullname
) && remove(fullname
) != 0 && errno
!= ENOENT
) {
1488 const char *e
= strerror(errno
);
1490 (void) fprintf(stderr
, _("%s: Can't remove %s: %s\n"),
1491 progname
, fullname
, e
);
1492 (void) exit(EXIT_FAILURE
);
1494 if ((fp
= fopen(fullname
, "wb")) == NULL
) {
1495 if (mkdirs(fullname
) != 0)
1496 (void) exit(EXIT_FAILURE
);
1497 if ((fp
= fopen(fullname
, "wb")) == NULL
) {
1498 const char *e
= strerror(errno
);
1500 (void) fprintf(stderr
, _("%s: Can't create %s: %s\n"),
1501 progname
, fullname
, e
);
1502 (void) exit(EXIT_FAILURE
);
1505 convert(eitol(typecnt
), tzh
.tzh_ttisgmtcnt
);
1506 convert(eitol(typecnt
), tzh
.tzh_ttisstdcnt
);
1507 convert(eitol(leapcnt
), tzh
.tzh_leapcnt
);
1508 convert(eitol(timecnt
), tzh
.tzh_timecnt
);
1509 convert(eitol(typecnt
), tzh
.tzh_typecnt
);
1510 convert(eitol(charcnt
), tzh
.tzh_charcnt
);
1511 (void) strncpy(tzh
.tzh_magic
, TZ_MAGIC
, sizeof tzh
.tzh_magic
);
1512 #define DO(field) (void) fwrite((void *) tzh.field, (size_t) sizeof tzh.field, (size_t) 1, fp)
1522 for (i
= 0; i
< timecnt
; ++i
) {
1525 if (ats
[i
] >= trans
[j
]) {
1526 ats
[i
] = tadd(ats
[i
], corr
[j
]);
1529 puttzcode((long) ats
[i
], fp
);
1532 (void) fwrite((void *) types
, (size_t) sizeof types
[0],
1533 (size_t) timecnt
, fp
);
1534 for (i
= 0; i
< typecnt
; ++i
) {
1535 puttzcode((long) gmtoffs
[i
], fp
);
1536 (void) putc(isdsts
[i
], fp
);
1537 (void) putc(abbrinds
[i
], fp
);
1540 (void) fwrite((void *) chars
, (size_t) sizeof chars
[0],
1541 (size_t) charcnt
, fp
);
1542 for (i
= 0; i
< leapcnt
; ++i
) {
1544 if (timecnt
== 0 || trans
[i
] < ats
[0]) {
1547 if (++j
>= typecnt
) {
1553 while (j
< timecnt
&& trans
[i
] >= ats
[j
])
1557 puttzcode((long) tadd(trans
[i
], -gmtoffs
[j
]), fp
);
1558 } else puttzcode((long) trans
[i
], fp
);
1559 puttzcode((long) corr
[i
], fp
);
1561 for (i
= 0; i
< typecnt
; ++i
)
1562 (void) putc(ttisstds
[i
], fp
);
1563 for (i
= 0; i
< typecnt
; ++i
)
1564 (void) putc(ttisgmts
[i
], fp
);
1565 if (ferror(fp
) || fclose(fp
)) {
1566 (void) fprintf(stderr
, _("%s: Error writing %s\n"),
1567 progname
, fullname
);
1568 (void) exit(EXIT_FAILURE
);
1573 doabbr(abbr
, format
, letters
, isdst
)
1575 const char * const format
;
1576 const char * const letters
;
1579 if (strchr(format
, '/') == NULL
) {
1580 if (letters
== NULL
)
1581 (void) strcpy(abbr
, format
);
1582 else (void) sprintf(abbr
, format
, letters
);
1584 (void) strcpy(abbr
, strchr(format
, '/') + 1);
1586 (void) strcpy(abbr
, format
);
1587 *strchr(abbr
, '/') = '\0';
1592 outzone(zpfirst
, zonecount
)
1593 const struct zone
* const zpfirst
;
1594 const int zonecount
;
1596 register const struct zone
* zp
;
1597 register struct rule
* rp
;
1599 register int usestart
, useuntil
;
1600 register time_t starttime
, untiltime
;
1601 register long gmtoff
;
1602 register long stdoff
;
1604 register long startoff
;
1605 register int startttisstd
;
1606 register int startttisgmt
;
1608 char startbuf
[BUFSIZ
];
1610 INITIALIZE(untiltime
);
1611 INITIALIZE(starttime
);
1613 ** Now. . .finally. . .generate some useful data!
1619 ** A guess that may well be corrected later.
1623 ** Thanks to Earl Chew (earl@dnd.icp.nec.com.au)
1624 ** for noting the need to unconditionally initialize startttisstd.
1626 startttisstd
= FALSE
;
1627 startttisgmt
= FALSE
;
1628 for (i
= 0; i
< zonecount
; ++i
) {
1630 usestart
= i
> 0 && (zp
- 1)->z_untiltime
> min_time
;
1631 useuntil
= i
< (zonecount
- 1);
1632 if (useuntil
&& zp
->z_untiltime
<= min_time
)
1634 gmtoff
= zp
->z_gmtoff
;
1635 eat(zp
->z_filename
, zp
->z_linenum
);
1637 startoff
= zp
->z_gmtoff
;
1638 if (zp
->z_nrules
== 0) {
1639 stdoff
= zp
->z_stdoff
;
1640 doabbr(startbuf
, zp
->z_format
,
1641 (char *) NULL
, stdoff
!= 0);
1642 type
= addtype(oadd(zp
->z_gmtoff
, stdoff
),
1643 startbuf
, stdoff
!= 0, startttisstd
,
1646 addtt(starttime
, type
);
1649 else if (stdoff
!= 0)
1650 addtt(min_time
, type
);
1651 } else for (year
= min_year
; year
<= max_year
; ++year
) {
1652 if (useuntil
&& year
> zp
->z_untilrule
.r_hiyear
)
1655 ** Mark which rules to do in the current year.
1656 ** For those to do, calculate rpytime(rp, year);
1658 for (j
= 0; j
< zp
->z_nrules
; ++j
) {
1659 rp
= &zp
->z_rules
[j
];
1660 eats(zp
->z_filename
, zp
->z_linenum
,
1661 rp
->r_filename
, rp
->r_linenum
);
1662 rp
->r_todo
= year
>= rp
->r_loyear
&&
1663 year
<= rp
->r_hiyear
&&
1664 yearistype(year
, rp
->r_yrtype
);
1666 rp
->r_temp
= rpytime(rp
, year
);
1670 register time_t jtime
, ktime
;
1671 register long offset
;
1677 ** Turn untiltime into UTC
1678 ** assuming the current gmtoff and
1681 untiltime
= zp
->z_untiltime
;
1682 if (!zp
->z_untilrule
.r_todisgmt
)
1683 untiltime
= tadd(untiltime
,
1685 if (!zp
->z_untilrule
.r_todisstd
)
1686 untiltime
= tadd(untiltime
,
1690 ** Find the rule (of those to do, if any)
1691 ** that takes effect earliest in the year.
1694 for (j
= 0; j
< zp
->z_nrules
; ++j
) {
1695 rp
= &zp
->z_rules
[j
];
1698 eats(zp
->z_filename
, zp
->z_linenum
,
1699 rp
->r_filename
, rp
->r_linenum
);
1700 offset
= rp
->r_todisgmt
? 0 : gmtoff
;
1701 if (!rp
->r_todisstd
)
1702 offset
= oadd(offset
, stdoff
);
1704 if (jtime
== min_time
||
1707 jtime
= tadd(jtime
, -offset
);
1708 if (k
< 0 || jtime
< ktime
) {
1714 break; /* go on to next year */
1715 rp
= &zp
->z_rules
[k
];
1717 if (useuntil
&& ktime
>= untiltime
)
1719 stdoff
= rp
->r_stdoff
;
1720 if (usestart
&& ktime
== starttime
)
1723 if (ktime
< starttime
) {
1724 startoff
= oadd(zp
->z_gmtoff
,
1726 doabbr(startbuf
, zp
->z_format
,
1731 if (*startbuf
== '\0' &&
1732 startoff
== oadd(zp
->z_gmtoff
,
1734 doabbr(startbuf
, zp
->z_format
,
1739 eats(zp
->z_filename
, zp
->z_linenum
,
1740 rp
->r_filename
, rp
->r_linenum
);
1741 doabbr(buf
, zp
->z_format
, rp
->r_abbrvar
,
1743 offset
= oadd(zp
->z_gmtoff
, rp
->r_stdoff
);
1744 type
= addtype(offset
, buf
, rp
->r_stdoff
!= 0,
1745 rp
->r_todisstd
, rp
->r_todisgmt
);
1750 if (*startbuf
== '\0' &&
1751 zp
->z_format
!= NULL
&&
1752 strchr(zp
->z_format
, '%') == NULL
&&
1753 strchr(zp
->z_format
, '/') == NULL
)
1754 (void) strcpy(startbuf
, zp
->z_format
);
1755 eat(zp
->z_filename
, zp
->z_linenum
);
1756 if (*startbuf
== '\0')
1757 error(_("can't determine time zone abbreviation to use just after until time"));
1758 else addtt(starttime
,
1759 addtype(startoff
, startbuf
,
1760 startoff
!= zp
->z_gmtoff
,
1765 ** Now we may get to set starttime for the next zone line.
1768 startttisstd
= zp
->z_untilrule
.r_todisstd
;
1769 startttisgmt
= zp
->z_untilrule
.r_todisgmt
;
1770 starttime
= zp
->z_untiltime
;
1772 starttime
= tadd(starttime
, -stdoff
);
1774 starttime
= tadd(starttime
, -gmtoff
);
1777 writezone(zpfirst
->z_name
);
1781 addtt(starttime
, type
)
1782 const time_t starttime
;
1785 if (starttime
<= min_time
||
1786 (timecnt
== 1 && attypes
[0].at
< min_time
)) {
1787 gmtoffs
[0] = gmtoffs
[type
];
1788 isdsts
[0] = isdsts
[type
];
1789 ttisstds
[0] = ttisstds
[type
];
1790 ttisgmts
[0] = ttisgmts
[type
];
1791 if (abbrinds
[type
] != 0)
1792 (void) strcpy(chars
, &chars
[abbrinds
[type
]]);
1794 charcnt
= strlen(chars
) + 1;
1799 if (timecnt
>= TZ_MAX_TIMES
) {
1800 error(_("too many transitions?!"));
1801 (void) exit(EXIT_FAILURE
);
1803 attypes
[timecnt
].at
= starttime
;
1804 attypes
[timecnt
].type
= type
;
1809 addtype(gmtoff
, abbr
, isdst
, ttisstd
, ttisgmt
)
1811 const char * const abbr
;
1818 if (isdst
!= TRUE
&& isdst
!= FALSE
) {
1819 error(_("internal error - addtype called with bad isdst"));
1820 (void) exit(EXIT_FAILURE
);
1822 if (ttisstd
!= TRUE
&& ttisstd
!= FALSE
) {
1823 error(_("internal error - addtype called with bad ttisstd"));
1824 (void) exit(EXIT_FAILURE
);
1826 if (ttisgmt
!= TRUE
&& ttisgmt
!= FALSE
) {
1827 error(_("internal error - addtype called with bad ttisgmt"));
1828 (void) exit(EXIT_FAILURE
);
1831 ** See if there's already an entry for this zone type.
1832 ** If so, just return its index.
1834 for (i
= 0; i
< typecnt
; ++i
) {
1835 if (gmtoff
== gmtoffs
[i
] && isdst
== isdsts
[i
] &&
1836 strcmp(abbr
, &chars
[abbrinds
[i
]]) == 0 &&
1837 ttisstd
== ttisstds
[i
] &&
1838 ttisgmt
== ttisgmts
[i
])
1842 ** There isn't one; add a new one, unless there are already too
1845 if (typecnt
>= TZ_MAX_TYPES
) {
1846 error(_("too many local time types"));
1847 (void) exit(EXIT_FAILURE
);
1849 gmtoffs
[i
] = gmtoff
;
1851 ttisstds
[i
] = ttisstd
;
1852 ttisgmts
[i
] = ttisgmt
;
1854 for (j
= 0; j
< charcnt
; ++j
)
1855 if (strcmp(&chars
[j
], abbr
) == 0)
1865 leapadd(t
, positive
, rolling
, count
)
1873 if (leapcnt
+ (positive
? count
: 1) > TZ_MAX_LEAPS
) {
1874 error(_("too many leap seconds"));
1875 (void) exit(EXIT_FAILURE
);
1877 for (i
= 0; i
< leapcnt
; ++i
)
1878 if (t
<= trans
[i
]) {
1879 if (t
== trans
[i
]) {
1880 error(_("repeated leap second moment"));
1881 (void) exit(EXIT_FAILURE
);
1886 for (j
= leapcnt
; j
> i
; --j
) {
1887 trans
[j
] = trans
[j
- 1];
1888 corr
[j
] = corr
[j
- 1];
1889 roll
[j
] = roll
[j
- 1];
1892 corr
[i
] = positive
? 1L : eitol(-count
);
1895 } while (positive
&& --count
!= 0);
1902 register long last
= 0;
1905 ** propagate leap seconds forward
1907 for (i
= 0; i
< leapcnt
; ++i
) {
1908 trans
[i
] = tadd(trans
[i
], last
);
1909 last
= corr
[i
] += last
;
1914 yearistype(year
, type
)
1916 const char * const type
;
1921 if (type
== NULL
|| *type
== '\0')
1923 buf
= erealloc(buf
, (int) (132 + strlen(yitcommand
) + strlen(type
)));
1924 (void) sprintf(buf
, "%s %d %s", yitcommand
, year
, type
);
1925 result
= system(buf
);
1926 if (WIFEXITED(result
)) switch (WEXITSTATUS(result
)) {
1932 error(_("Wild result from command execution"));
1933 (void) fprintf(stderr
, _("%s: command was '%s', result was %d\n"),
1934 progname
, buf
, result
);
1936 (void) exit(EXIT_FAILURE
);
1943 a
= (unsigned char) a
;
1944 return (isascii(a
) && isupper(a
)) ? tolower(a
) : a
;
1948 ciequal(ap
, bp
) /* case-insensitive equality */
1949 register const char * ap
;
1950 register const char * bp
;
1952 while (lowerit(*ap
) == lowerit(*bp
++))
1960 register const char * abbr
;
1961 register const char * word
;
1963 if (lowerit(*abbr
) != lowerit(*word
))
1966 while (*++abbr
!= '\0')
1970 } while (lowerit(*word
++) != lowerit(*abbr
));
1974 static const struct lookup
*
1976 register const char * const word
;
1977 register const struct lookup
* const table
;
1979 register const struct lookup
* foundlp
;
1980 register const struct lookup
* lp
;
1982 if (word
== NULL
|| table
== NULL
)
1985 ** Look for exact match.
1987 for (lp
= table
; lp
->l_word
!= NULL
; ++lp
)
1988 if (ciequal(word
, lp
->l_word
))
1991 ** Look for inexact match.
1994 for (lp
= table
; lp
->l_word
!= NULL
; ++lp
)
1995 if (itsabbr(word
, lp
->l_word
)) {
1996 if (foundlp
== NULL
)
1998 else return NULL
; /* multiple inexact matches */
2008 register char ** array
;
2013 array
= (char **) (void *)
2014 emalloc((int) ((strlen(cp
) + 1) * sizeof *array
));
2017 while (isascii(*cp
) && isspace((unsigned char) *cp
))
2019 if (*cp
== '\0' || *cp
== '#')
2021 array
[nsubs
++] = dp
= cp
;
2023 if ((*dp
= *cp
++) != '"')
2025 else while ((*dp
= *cp
++) != '"')
2028 else error(_("Odd number of quotation marks"));
2029 } while (*cp
!= '\0' && *cp
!= '#' &&
2030 (!isascii(*cp
) || !isspace((unsigned char) *cp
)));
2031 if (isascii(*cp
) && isspace((unsigned char) *cp
))
2035 array
[nsubs
] = NULL
;
2047 if ((t2
> 0 && t
<= t1
) || (t2
< 0 && t
>= t1
)) {
2048 error(_("time overflow"));
2049 (void) exit(EXIT_FAILURE
);
2061 if (t1
== max_time
&& t2
> 0)
2063 if (t1
== min_time
&& t2
< 0)
2066 if ((t2
> 0 && t
<= t1
) || (t2
< 0 && t
>= t1
)) {
2067 error(_("time overflow"));
2068 (void) exit(EXIT_FAILURE
);
2074 ** Given a rule, and a year, compute the date - in seconds since January 1,
2075 ** 1970, 00:00 LOCAL time - in that year that the rule refers to.
2079 rpytime(rp
, wantedy
)
2080 register const struct rule
* const rp
;
2081 register const int wantedy
;
2083 register int y
, m
, i
;
2084 register long dayoff
; /* with a nod to Margaret O. */
2087 if (wantedy
== INT_MIN
)
2089 if (wantedy
== INT_MAX
)
2094 while (wantedy
!= y
) {
2096 i
= len_years
[isleap(y
)];
2100 i
= -len_years
[isleap(y
)];
2102 dayoff
= oadd(dayoff
, eitol(i
));
2104 while (m
!= rp
->r_month
) {
2105 i
= len_months
[isleap(y
)][m
];
2106 dayoff
= oadd(dayoff
, eitol(i
));
2109 i
= rp
->r_dayofmonth
;
2110 if (m
== TM_FEBRUARY
&& i
== 29 && !isleap(y
)) {
2111 if (rp
->r_dycode
== DC_DOWLEQ
)
2114 error(_("use of 2/29 in non leap-year"));
2115 (void) exit(EXIT_FAILURE
);
2119 dayoff
= oadd(dayoff
, eitol(i
));
2120 if (rp
->r_dycode
== DC_DOWGEQ
|| rp
->r_dycode
== DC_DOWLEQ
) {
2123 #define LDAYSPERWEEK ((long) DAYSPERWEEK)
2124 wday
= eitol(EPOCH_WDAY
);
2126 ** Don't trust mod of negative numbers.
2129 wday
= (wday
+ dayoff
) % LDAYSPERWEEK
;
2131 wday
-= ((-dayoff
) % LDAYSPERWEEK
);
2133 wday
+= LDAYSPERWEEK
;
2135 while (wday
!= eitol(rp
->r_wday
))
2136 if (rp
->r_dycode
== DC_DOWGEQ
) {
2137 dayoff
= oadd(dayoff
, (long) 1);
2138 if (++wday
>= LDAYSPERWEEK
)
2142 dayoff
= oadd(dayoff
, (long) -1);
2144 wday
= LDAYSPERWEEK
- 1;
2147 if (i
< 0 || i
>= len_months
[isleap(y
)][m
]) {
2148 error(_("no day in month matches rule"));
2149 (void) exit(EXIT_FAILURE
);
2152 if (dayoff
< 0 && !TYPE_SIGNED(time_t))
2154 t
= (time_t) dayoff
* SECSPERDAY
;
2156 ** Cheap overflow check.
2158 if (t
/ SECSPERDAY
!= dayoff
)
2159 return (dayoff
> 0) ? max_time
: min_time
;
2160 return tadd(t
, rp
->r_tod
);
2165 const char * const string
;
2169 i
= strlen(string
) + 1;
2170 if (charcnt
+ i
> TZ_MAX_CHARS
) {
2171 error(_("too many, or too long, time zone abbreviations"));
2172 (void) exit(EXIT_FAILURE
);
2174 (void) strcpy(&chars
[charcnt
], string
);
2175 charcnt
+= eitol(i
);
2180 char * const argname
;
2182 register char * name
;
2185 if (argname
== NULL
|| *argname
== '\0')
2187 cp
= name
= ecpyalloc(argname
);
2188 while ((cp
= strchr(cp
+ 1, '/')) != 0) {
2192 ** DOS drive specifier?
2194 if (isalpha((unsigned char) name
[0]) &&
2195 name
[1] == ':' && name
[2] == '\0') {
2199 #endif /* !defined unix */
2200 if (!itsdir(name
)) {
2202 ** It doesn't seem to exist, so we try to create it.
2203 ** Creation may fail because of the directory being
2204 ** created by some other multiprocessor, so we get
2205 ** to do extra checking.
2207 if (mkdir(name
, MKDIR_UMASK
) != 0) {
2208 const char *e
= strerror(errno
);
2210 if (errno
!= EEXIST
|| !itsdir(name
)) {
2211 (void) fprintf(stderr
,
2212 _("%s: Can't create directory %s: %s\n"),
2232 if ((i
< 0 && l
>= 0) || (i
== 0 && l
!= 0) || (i
> 0 && l
<= 0)) {
2233 (void) fprintf(stderr
,
2234 _("%s: %d did not sign extend correctly\n"),
2236 (void) exit(EXIT_FAILURE
);
2242 ** UNIX was a registered trademark of UNIX System Laboratories in 1993.
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