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-rw-r--r--share/zoneinfo/zic.c1892
1 files changed, 0 insertions, 1892 deletions
diff --git a/share/zoneinfo/zic.c b/share/zoneinfo/zic.c
deleted file mode 100644
index 8d80e63b2ec2..000000000000
--- a/share/zoneinfo/zic.c
+++ /dev/null
@@ -1,1892 +0,0 @@
-/*-
- * Copyright (c) 1991, 1993
- * The Regents of the University of California. All rights reserved.
- *
- * This code is derived from software contributed to Berkeley by
- * Arthur David Olson of the National Cancer Institute.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions
- * are met:
- * 1. Redistributions of source code must retain the above copyright
- * notice, this list of conditions and the following disclaimer.
- * 2. Redistributions in binary form must reproduce the above copyright
- * notice, this list of conditions and the following disclaimer in the
- * documentation and/or other materials provided with the distribution.
- * 3. All advertising materials mentioning features or use of this software
- * must display the following acknowledgement:
- * This product includes software developed by the University of
- * California, Berkeley and its contributors.
- * 4. Neither the name of the University nor the names of its contributors
- * may be used to endorse or promote products derived from this software
- * without specific prior written permission.
- *
- * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
- * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
- * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
- * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
- * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
- * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
- * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
- * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
- * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
- * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
- * SUCH DAMAGE.
- */
-
-#ifndef lint
-static char sccsid[] = "@(#)zic.c 8.1 (Berkeley) 7/19/93";
-#endif /* not lint */
-
-#ifdef notdef
-static char elsieid[] = "@(#)zic.c 4.12";
-#endif
-
-#include <sys/types.h>
-#include <sys/cdefs.h>
-#include <sys/stat.h>
-#include <time.h>
-#include <tzfile.h>
-#include <stdio.h>
-#include <ctype.h>
-#include <string.h>
-#include <stdlib.h>
-
-#ifndef TRUE
-#define TRUE 1
-#define FALSE 0
-#endif /* !defined TRUE */
-
-struct rule {
- const char * r_filename;
- int r_linenum;
- const char * r_name;
-
- int r_loyear; /* for example, 1986 */
- int r_hiyear; /* for example, 1986 */
- const char * r_yrtype;
-
- int r_month; /* 0..11 */
-
- int r_dycode; /* see below */
- int r_dayofmonth;
- int r_wday;
-
- long r_tod; /* time from midnight */
- int r_todisstd; /* above is standard time if TRUE */
- /* or wall clock time if FALSE */
- long r_stdoff; /* offset from standard time */
- const char * r_abbrvar; /* variable part of abbreviation */
-
- int r_todo; /* a rule to do (used in outzone) */
- time_t r_temp; /* used in outzone */
-};
-
-/*
-** r_dycode r_dayofmonth r_wday
-*/
-
-#define DC_DOM 0 /* 1..31 */ /* unused */
-#define DC_DOWGEQ 1 /* 1..31 */ /* 0..6 (Sun..Sat) */
-#define DC_DOWLEQ 2 /* 1..31 */ /* 0..6 (Sun..Sat) */
-
-struct zone {
- const char * z_filename;
- int z_linenum;
-
- const char * z_name;
- long z_gmtoff;
- const char * z_rule;
- const char * z_format;
-
- long z_stdoff;
-
- struct rule * z_rules;
- int z_nrules;
-
- struct rule z_untilrule;
- time_t z_untiltime;
-};
-
-extern char * icatalloc __P((char * old, const char * new));
-extern char * icpyalloc __P((const char * string));
-extern void ifree __P((char * p));
-extern char * imalloc __P((int n));
-extern char * irealloc __P((char * old, int n));
-extern int link __P((const char * fromname, const char * toname));
-extern char * optarg;
-extern int optind;
-extern void perror __P((const char * string));
-extern char * scheck __P((const char * string, const char * format));
-static void addtt __P((time_t starttime, int type));
-static int addtype
- __P((long gmtoff, const char * abbr, int isdst,
- int ttisstd));
-static void addleap __P((time_t t, int positive, int rolling));
-static void adjleap __P((void));
-static void associate __P((void));
-static int ciequal __P((const char * ap, const char * bp));
-static void convert __P((long val, char * buf));
-static void dolink __P((const char * fromfile, const char * tofile));
-static void eat __P((const char * name, int num));
-static void eats __P((const char * name, int num,
- const char * rname, int rnum));
-static long eitol __P((int i));
-static void error __P((const char * message));
-static char ** getfields __P((char * buf));
-static long gethms __P((char * string, const char * errstrng,
- int signable));
-static void infile __P((const char * filename));
-static void inleap __P((char ** fields, int nfields));
-static void inlink __P((char ** fields, int nfields));
-static void inrule __P((char ** fields, int nfields));
-static int inzcont __P((char ** fields, int nfields));
-static int inzone __P((char ** fields, int nfields));
-static int inzsub __P((char ** fields, int nfields, int iscont));
-static int itsabbr __P((const char * abbr, const char * word));
-static int itsdir __P((const char * name));
-static int lowerit __P((int c));
-static char * memcheck __P((char * tocheck));
-static int mkdirs __P((char * filename));
-static void newabbr __P((const char * abbr));
-static long oadd __P((long t1, long t2));
-static void outzone __P((const struct zone * zp, int ntzones));
-static void puttzcode __P((long code, FILE * fp));
-static int rcomp __P((const void *leftp, const void *rightp));
-static time_t rpytime __P((const struct rule * rp, int wantedy));
-static void rulesub __P((struct rule * rp, char * loyearp, char * hiyearp,
- char * typep, char * monthp, char * dayp, char * timep));
-static void setboundaries __P((void));
-static time_t tadd __P((time_t t1, long t2));
-static void usage __P((void));
-static void writezone __P((const char * name));
-static int yearistype __P((int year, const char * type));
-
-static int charcnt;
-static int errors;
-static const char * filename;
-static int leapcnt;
-static int linenum;
-static time_t max_time;
-static int max_year;
-static time_t min_time;
-static int min_year;
-static int noise;
-static const char * rfilename;
-static int rlinenum;
-static const char * progname;
-static int timecnt;
-static int typecnt;
-static int tt_signed;
-
-/*
-** Line codes.
-*/
-
-#define LC_RULE 0
-#define LC_ZONE 1
-#define LC_LINK 2
-#define LC_LEAP 3
-
-/*
-** Which fields are which on a Zone line.
-*/
-
-#define ZF_NAME 1
-#define ZF_GMTOFF 2
-#define ZF_RULE 3
-#define ZF_FORMAT 4
-#define ZF_TILYEAR 5
-#define ZF_TILMONTH 6
-#define ZF_TILDAY 7
-#define ZF_TILTIME 8
-#define ZONE_MINFIELDS 5
-#define ZONE_MAXFIELDS 9
-
-/*
-** Which fields are which on a Zone continuation line.
-*/
-
-#define ZFC_GMTOFF 0
-#define ZFC_RULE 1
-#define ZFC_FORMAT 2
-#define ZFC_TILYEAR 3
-#define ZFC_TILMONTH 4
-#define ZFC_TILDAY 5
-#define ZFC_TILTIME 6
-#define ZONEC_MINFIELDS 3
-#define ZONEC_MAXFIELDS 7
-
-/*
-** Which files are which on a Rule line.
-*/
-
-#define RF_NAME 1
-#define RF_LOYEAR 2
-#define RF_HIYEAR 3
-#define RF_COMMAND 4
-#define RF_MONTH 5
-#define RF_DAY 6
-#define RF_TOD 7
-#define RF_STDOFF 8
-#define RF_ABBRVAR 9
-#define RULE_FIELDS 10
-
-/*
-** Which fields are which on a Link line.
-*/
-
-#define LF_FROM 1
-#define LF_TO 2
-#define LINK_FIELDS 3
-
-/*
-** Which fields are which on a Leap line.
-*/
-
-#define LP_YEAR 1
-#define LP_MONTH 2
-#define LP_DAY 3
-#define LP_TIME 4
-#define LP_CORR 5
-#define LP_ROLL 6
-#define LEAP_FIELDS 7
-
-/*
-** Year synonyms.
-*/
-
-#define YR_MINIMUM 0
-#define YR_MAXIMUM 1
-#define YR_ONLY 2
-
-static struct rule * rules;
-static int nrules; /* number of rules */
-
-static struct zone * zones;
-static int nzones; /* number of zones */
-
-struct link {
- const char * l_filename;
- int l_linenum;
- const char * l_from;
- const char * l_to;
-};
-
-static struct link * links;
-static int nlinks;
-
-struct lookup {
- const char * l_word;
- const int l_value;
-};
-
-static struct lookup const * byword __P((const char * string,
- const struct lookup * lp));
-
-static struct lookup const line_codes[] = {
- "Rule", LC_RULE,
- "Zone", LC_ZONE,
- "Link", LC_LINK,
- "Leap", LC_LEAP,
- NULL, 0
-};
-
-static struct lookup const mon_names[] = {
- "January", TM_JANUARY,
- "February", TM_FEBRUARY,
- "March", TM_MARCH,
- "April", TM_APRIL,
- "May", TM_MAY,
- "June", TM_JUNE,
- "July", TM_JULY,
- "August", TM_AUGUST,
- "September", TM_SEPTEMBER,
- "October", TM_OCTOBER,
- "November", TM_NOVEMBER,
- "December", TM_DECEMBER,
- NULL, 0
-};
-
-static struct lookup const wday_names[] = {
- "Sunday", TM_SUNDAY,
- "Monday", TM_MONDAY,
- "Tuesday", TM_TUESDAY,
- "Wednesday", TM_WEDNESDAY,
- "Thursday", TM_THURSDAY,
- "Friday", TM_FRIDAY,
- "Saturday", TM_SATURDAY,
- NULL, 0
-};
-
-static struct lookup const lasts[] = {
- "last-Sunday", TM_SUNDAY,
- "last-Monday", TM_MONDAY,
- "last-Tuesday", TM_TUESDAY,
- "last-Wednesday", TM_WEDNESDAY,
- "last-Thursday", TM_THURSDAY,
- "last-Friday", TM_FRIDAY,
- "last-Saturday", TM_SATURDAY,
- NULL, 0
-};
-
-static struct lookup const begin_years[] = {
- "minimum", YR_MINIMUM,
- "maximum", YR_MAXIMUM,
- NULL, 0
-};
-
-static struct lookup const end_years[] = {
- "minimum", YR_MINIMUM,
- "maximum", YR_MAXIMUM,
- "only", YR_ONLY,
- NULL, 0
-};
-
-static struct lookup const leap_types[] = {
- "Rolling", TRUE,
- "Stationary", FALSE,
- NULL, 0
-};
-
-static const int len_months[2][MONSPERYEAR] = {
- 31, 28, 31, 30, 31, 30, 31, 31, 30, 31, 30, 31,
- 31, 29, 31, 30, 31, 30, 31, 31, 30, 31, 30, 31
-};
-
-static const int len_years[2] = {
- DAYSPERNYEAR, DAYSPERLYEAR
-};
-
-static time_t ats[TZ_MAX_TIMES];
-static unsigned char types[TZ_MAX_TIMES];
-static long gmtoffs[TZ_MAX_TYPES];
-static char isdsts[TZ_MAX_TYPES];
-static char abbrinds[TZ_MAX_TYPES];
-static char ttisstds[TZ_MAX_TYPES];
-static char chars[TZ_MAX_CHARS];
-static time_t trans[TZ_MAX_LEAPS];
-static long corr[TZ_MAX_LEAPS];
-static char roll[TZ_MAX_LEAPS];
-
-/*
-** Memory allocation.
-*/
-
-static char *
-memcheck(ptr)
-char * const ptr;
-{
- if (ptr == NULL) {
- (void) perror(progname);
- (void) exit(EXIT_FAILURE);
- }
- return ptr;
-}
-
-#define emalloc(size) memcheck(imalloc(size))
-#define erealloc(ptr, size) memcheck(irealloc(ptr, size))
-#define ecpyalloc(ptr) memcheck(icpyalloc(ptr))
-#define ecatalloc(oldp, newp) memcheck(icatalloc(oldp, newp))
-
-/*
-** Error handling.
-*/
-
-static void
-eats(name, num, rname, rnum)
-const char * const name;
-const int num;
-const char * const rname;
-const int rnum;
-{
- filename = name;
- linenum = num;
- rfilename = rname;
- rlinenum = rnum;
-}
-
-static void
-eat(name, num)
-const char * const name;
-const int num;
-{
- eats(name, num, (char *) NULL, -1);
-}
-
-static void
-error(string)
-const char * const string;
-{
- /*
- ** Match the format of "cc" to allow sh users to
- ** zic ... 2>&1 | error -t "*" -v
- ** on BSD systems.
- */
- (void) fprintf(stderr, "\"%s\", line %d: %s",
- filename, linenum, string);
- if (rfilename != NULL)
- (void) fprintf(stderr, " (rule from \"%s\", line %d)",
- rfilename, rlinenum);
- (void) fprintf(stderr, "\n");
- ++errors;
-}
-
-static void
-usage()
-{
- (void) fprintf(stderr,
-"%s: usage is %s [ -s ] [ -v ] [ -l localtime ] [ -p posixrules ] [ -d directory ]\n\
-\t[ -L leapseconds ] [ filename ... ]\n",
- progname, progname);
- (void) exit(EXIT_FAILURE);
-}
-
-static const char * psxrules = NULL;
-static const char * lcltime = NULL;
-static const char * directory = NULL;
-static const char * leapsec = NULL;
-static int sflag = FALSE;
-
-int
-main(argc, argv)
-int argc;
-char * argv[];
-{
- register int i, j;
- register int c;
-
- (void) umask(umask(022) | 022);
- progname = argv[0];
- while ((c = getopt(argc, argv, "d:l:p:L:vs")) != EOF)
- switch (c) {
- default:
- usage();
- case 'd':
- if (directory == NULL)
- directory = optarg;
- else {
- (void) fprintf(stderr,
-"%s: More than one -d option specified\n",
- progname);
- (void) exit(EXIT_FAILURE);
- }
- break;
- case 'l':
- if (lcltime == NULL)
- lcltime = optarg;
- else {
- (void) fprintf(stderr,
-"%s: More than one -l option specified\n",
- progname);
- (void) exit(EXIT_FAILURE);
- }
- break;
- case 'p':
- if (psxrules == NULL)
- psxrules = optarg;
- else {
- (void) fprintf(stderr,
-"%s: More than one -p option specified\n",
- progname);
- (void) exit(EXIT_FAILURE);
- }
- break;
- case 'L':
- if (leapsec == NULL)
- leapsec = optarg;
- else {
- (void) fprintf(stderr,
-"%s: More than one -L option specified\n",
- progname);
- (void) exit(EXIT_FAILURE);
- }
- break;
- case 'v':
- noise = TRUE;
- break;
- case 's':
- sflag = TRUE;
- break;
- }
- if (optind == argc - 1 && strcmp(argv[optind], "=") == 0)
- usage(); /* usage message by request */
- if (directory == NULL)
- directory = TZDIR;
-
- setboundaries();
-
- if (optind < argc && leapsec != NULL) {
- infile(leapsec);
- adjleap();
- }
-
- zones = (struct zone *) emalloc(0);
- rules = (struct rule *) emalloc(0);
- links = (struct link *) emalloc(0);
- for (i = optind; i < argc; ++i)
- infile(argv[i]);
- if (errors)
- (void) exit(EXIT_FAILURE);
- associate();
- for (i = 0; i < nzones; i = j) {
- /*
- ** Find the next non-continuation zone entry.
- */
- for (j = i + 1; j < nzones && zones[j].z_name == NULL; ++j)
- ;
- outzone(&zones[i], j - i);
- }
- /*
- ** Make links.
- */
- for (i = 0; i < nlinks; ++i)
- dolink(links[i].l_from, links[i].l_to);
- if (lcltime != NULL)
- dolink(lcltime, TZDEFAULT);
- if (psxrules != NULL)
- dolink(psxrules, TZDEFRULES);
- return (errors == 0) ? EXIT_SUCCESS : EXIT_FAILURE;
-}
-
-static void
-dolink(fromfile, tofile)
-const char * const fromfile;
-const char * const tofile;
-{
- register char * fromname;
- register char * toname;
-
- fromname = ecpyalloc(directory);
- fromname = ecatalloc(fromname, "/");
- fromname = ecatalloc(fromname, fromfile);
- toname = ecpyalloc(directory);
- toname = ecatalloc(toname, "/");
- toname = ecatalloc(toname, tofile);
- /*
- ** We get to be careful here since
- ** there's a fair chance of root running us.
- */
- if (!itsdir(toname))
- (void) remove(toname);
- if (link(fromname, toname) != 0) {
- (void) fprintf(stderr, "%s: Can't link from %s to ",
- progname, fromname);
- (void) perror(toname);
- (void) exit(EXIT_FAILURE);
- }
- ifree(fromname);
- ifree(toname);
-}
-
-static void
-setboundaries()
-{
- register time_t bit;
-
- for (bit = 1; bit > 0; bit <<= 1)
- ;
- if (bit == 0) { /* time_t is an unsigned type */
- tt_signed = FALSE;
- min_time = 0;
- max_time = ~(time_t) 0;
- if (sflag)
- max_time >>= 1;
- } else {
- tt_signed = TRUE;
- min_time = bit;
- max_time = bit;
- ++max_time;
- max_time = -max_time;
- if (sflag)
- min_time = 0;
- }
- min_year = TM_YEAR_BASE + gmtime(&min_time)->tm_year;
- max_year = TM_YEAR_BASE + gmtime(&max_time)->tm_year;
-}
-
-static int
-itsdir(name)
-const char * const name;
-{
- struct stat s;
-
- return (stat(name, &s) == 0 && S_ISDIR(s.st_mode));
-}
-
-/*
-** Associate sets of rules with zones.
-*/
-
-/*
-** Sort by rule name.
-*/
-
-static int
-rcomp(cp1, cp2)
-const void * cp1;
-const void * cp2;
-{
- return strcmp(((struct rule *) cp1)->r_name,
- ((struct rule *) cp2)->r_name);
-}
-
-static void
-associate()
-{
- register struct zone * zp;
- register struct rule * rp;
- register int base, out;
- register int i;
-
- if (nrules != 0)
- (void) qsort((void *) rules, (size_t) nrules,
- (size_t) sizeof *rules, rcomp);
- for (i = 0; i < nzones; ++i) {
- zp = &zones[i];
- zp->z_rules = NULL;
- zp->z_nrules = 0;
- }
- for (base = 0; base < nrules; base = out) {
- rp = &rules[base];
- for (out = base + 1; out < nrules; ++out)
- if (strcmp(rp->r_name, rules[out].r_name) != 0)
- break;
- for (i = 0; i < nzones; ++i) {
- zp = &zones[i];
- if (strcmp(zp->z_rule, rp->r_name) != 0)
- continue;
- zp->z_rules = rp;
- zp->z_nrules = out - base;
- }
- }
- for (i = 0; i < nzones; ++i) {
- zp = &zones[i];
- if (zp->z_nrules == 0) {
- /*
- ** Maybe we have a local standard time offset.
- */
- eat(zp->z_filename, zp->z_linenum);
- zp->z_stdoff =
- gethms((char *)zp->z_rule, "unruly zone", TRUE);
- /*
- ** Note, though, that if there's no rule,
- ** a '%s' in the format is a bad thing.
- */
- if (strchr(zp->z_format, '%') != 0)
- error("%s in ruleless zone");
- }
- }
- if (errors)
- (void) exit(EXIT_FAILURE);
-}
-
-static void
-infile(name)
-const char * name;
-{
- register FILE * fp;
- register char ** fields;
- register char * cp;
- register const struct lookup * lp;
- register int nfields;
- register int wantcont;
- register int num;
- char buf[BUFSIZ];
-
- if (strcmp(name, "-") == 0) {
- name = "standard input";
- fp = stdin;
- } else if ((fp = fopen(name, "r")) == NULL) {
- (void) fprintf(stderr, "%s: Can't open ", progname);
- (void) perror(name);
- (void) exit(EXIT_FAILURE);
- }
- wantcont = FALSE;
- for (num = 1; ; ++num) {
- eat(name, num);
- if (fgets(buf, (int) sizeof buf, fp) != buf)
- break;
- cp = strchr(buf, '\n');
- if (cp == NULL) {
- error("line too long");
- (void) exit(EXIT_FAILURE);
- }
- *cp = '\0';
- fields = getfields(buf);
- nfields = 0;
- while (fields[nfields] != NULL) {
- if (ciequal(fields[nfields], "-"))
- fields[nfields] = "";
- ++nfields;
- }
- if (nfields == 0) {
- /* nothing to do */
- } else if (wantcont) {
- wantcont = inzcont(fields, nfields);
- } else {
- lp = byword(fields[0], line_codes);
- if (lp == NULL)
- error("input line of unknown type");
- else switch ((int) (lp->l_value)) {
- case LC_RULE:
- inrule(fields, nfields);
- wantcont = FALSE;
- break;
- case LC_ZONE:
- wantcont = inzone(fields, nfields);
- break;
- case LC_LINK:
- inlink(fields, nfields);
- wantcont = FALSE;
- break;
- case LC_LEAP:
- if (name != leapsec)
- (void) fprintf(stderr,
-"%s: Leap line in non leap seconds file %s\n",
- progname, name);
- else inleap(fields, nfields);
- wantcont = FALSE;
- break;
- default: /* "cannot happen" */
- (void) fprintf(stderr,
-"%s: panic: Invalid l_value %d\n",
- progname, lp->l_value);
- (void) exit(EXIT_FAILURE);
- }
- }
- ifree((char *) fields);
- }
- if (ferror(fp)) {
- (void) fprintf(stderr, "%s: Error reading ", progname);
- (void) perror(filename);
- (void) exit(EXIT_FAILURE);
- }
- if (fp != stdin && fclose(fp)) {
- (void) fprintf(stderr, "%s: Error closing ", progname);
- (void) perror(filename);
- (void) exit(EXIT_FAILURE);
- }
- if (wantcont)
- error("expected continuation line not found");
-}
-
-/*
-** Convert a string of one of the forms
-** h -h hh:mm -hh:mm hh:mm:ss -hh:mm:ss
-** into a number of seconds.
-** A null string maps to zero.
-** Call error with errstring and return zero on errors.
-*/
-
-static long
-gethms(string, errstring, signable)
-char * string;
-const char * const errstring;
-const int signable;
-{
- int hh, mm, ss, sign;
-
- if (string == NULL || *string == '\0')
- return 0;
- if (!signable)
- sign = 1;
- else if (*string == '-') {
- sign = -1;
- ++string;
- } else sign = 1;
- if (sscanf(string, scheck(string, "%d"), &hh) == 1)
- mm = ss = 0;
- else if (sscanf(string, scheck(string, "%d:%d"), &hh, &mm) == 2)
- ss = 0;
- else if (sscanf(string, scheck(string, "%d:%d:%d"),
- &hh, &mm, &ss) != 3) {
- error(errstring);
- return 0;
- }
- if (hh < 0 || hh >= HOURSPERDAY ||
- mm < 0 || mm >= MINSPERHOUR ||
- ss < 0 || ss > SECSPERMIN) {
- error(errstring);
- return 0;
- }
- return eitol(sign) *
- (eitol(hh * MINSPERHOUR + mm) *
- eitol(SECSPERMIN) + eitol(ss));
-}
-
-static void
-inrule(fields, nfields)
-register char ** const fields;
-const int nfields;
-{
- static struct rule r;
-
- if (nfields != RULE_FIELDS) {
- error("wrong number of fields on Rule line");
- return;
- }
- if (*fields[RF_NAME] == '\0') {
- error("nameless rule");
- return;
- }
- r.r_filename = filename;
- r.r_linenum = linenum;
- r.r_stdoff = gethms(fields[RF_STDOFF], "invalid saved time", TRUE);
- rulesub(&r, fields[RF_LOYEAR], fields[RF_HIYEAR], fields[RF_COMMAND],
- fields[RF_MONTH], fields[RF_DAY], fields[RF_TOD]);
- r.r_name = ecpyalloc(fields[RF_NAME]);
- r.r_abbrvar = ecpyalloc(fields[RF_ABBRVAR]);
- rules = (struct rule *) erealloc((char *) rules,
- (int) ((nrules + 1) * sizeof *rules));
- rules[nrules++] = r;
-}
-
-static int
-inzone(fields, nfields)
-register char ** const fields;
-const int nfields;
-{
- register int i;
- char buf[132];
-
- if (nfields < ZONE_MINFIELDS || nfields > ZONE_MAXFIELDS) {
- error("wrong number of fields on Zone line");
- return FALSE;
- }
- if (strcmp(fields[ZF_NAME], TZDEFAULT) == 0 && lcltime != NULL) {
- (void) sprintf(buf,
- "\"Zone %s\" line and -l option are mutually exclusive",
- TZDEFAULT);
- error(buf);
- return FALSE;
- }
- if (strcmp(fields[ZF_NAME], TZDEFRULES) == 0 && psxrules != NULL) {
- (void) sprintf(buf,
- "\"Zone %s\" line and -p option are mutually exclusive",
- TZDEFRULES);
- error(buf);
- return FALSE;
- }
- for (i = 0; i < nzones; ++i)
- if (zones[i].z_name != NULL &&
- strcmp(zones[i].z_name, fields[ZF_NAME]) == 0) {
- (void) sprintf(buf,
-"duplicate zone name %s (file \"%s\", line %d)",
- fields[ZF_NAME],
- zones[i].z_filename,
- zones[i].z_linenum);
- error(buf);
- return FALSE;
- }
- return inzsub(fields, nfields, FALSE);
-}
-
-static int
-inzcont(fields, nfields)
-register char ** const fields;
-const int nfields;
-{
- if (nfields < ZONEC_MINFIELDS || nfields > ZONEC_MAXFIELDS) {
- error("wrong number of fields on Zone continuation line");
- return FALSE;
- }
- return inzsub(fields, nfields, TRUE);
-}
-
-static int
-inzsub(fields, nfields, iscont)
-register char ** const fields;
-const int nfields;
-const int iscont;
-{
- register char * cp;
- static struct zone z;
- register int i_gmtoff, i_rule, i_format;
- register int i_untilyear, i_untilmonth;
- register int i_untilday, i_untiltime;
- register int hasuntil;
-
- if (iscont) {
- i_gmtoff = ZFC_GMTOFF;
- i_rule = ZFC_RULE;
- i_format = ZFC_FORMAT;
- i_untilyear = ZFC_TILYEAR;
- i_untilmonth = ZFC_TILMONTH;
- i_untilday = ZFC_TILDAY;
- i_untiltime = ZFC_TILTIME;
- z.z_name = NULL;
- } else {
- i_gmtoff = ZF_GMTOFF;
- i_rule = ZF_RULE;
- i_format = ZF_FORMAT;
- i_untilyear = ZF_TILYEAR;
- i_untilmonth = ZF_TILMONTH;
- i_untilday = ZF_TILDAY;
- i_untiltime = ZF_TILTIME;
- z.z_name = ecpyalloc(fields[ZF_NAME]);
- }
- z.z_filename = filename;
- z.z_linenum = linenum;
- z.z_gmtoff = gethms(fields[i_gmtoff], "invalid GMT offset", TRUE);
- if ((cp = strchr(fields[i_format], '%')) != 0) {
- if (*++cp != 's' || strchr(cp, '%') != 0) {
- error("invalid abbreviation format");
- return FALSE;
- }
- }
- z.z_rule = ecpyalloc(fields[i_rule]);
- z.z_format = ecpyalloc(fields[i_format]);
- hasuntil = nfields > i_untilyear;
- if (hasuntil) {
- z.z_untilrule.r_filename = filename;
- z.z_untilrule.r_linenum = linenum;
- rulesub(&z.z_untilrule,
- fields[i_untilyear],
- "only",
- "",
- (nfields > i_untilmonth) ? fields[i_untilmonth] : "Jan",
- (nfields > i_untilday) ? fields[i_untilday] : "1",
- (nfields > i_untiltime) ? fields[i_untiltime] : "0");
- z.z_untiltime = rpytime(&z.z_untilrule, z.z_untilrule.r_loyear);
- if (iscont && nzones > 0 && z.z_untiltime < max_time &&
- z.z_untiltime > min_time &&
- zones[nzones - 1].z_untiltime >= z.z_untiltime) {
-error("Zone continuation line end time is not after end time of previous line");
- return FALSE;
- }
- }
- zones = (struct zone *) erealloc((char *) zones,
- (int) ((nzones + 1) * sizeof *zones));
- zones[nzones++] = z;
- /*
- ** If there was an UNTIL field on this line,
- ** there's more information about the zone on the next line.
- */
- return hasuntil;
-}
-
-static void
-inleap(fields, nfields)
-register char ** const fields;
-const int nfields;
-{
- register const char * cp;
- register const struct lookup * lp;
- register int i, j;
- int year, month, day;
- long dayoff, tod;
- time_t t;
-
- if (nfields != LEAP_FIELDS) {
- error("wrong number of fields on Leap line");
- return;
- }
- dayoff = 0;
- cp = fields[LP_YEAR];
- if (sscanf((char *)cp, scheck(cp, "%d"), &year) != 1 ||
- year < min_year || year > max_year) {
- /*
- * Leapin' Lizards!
- */
- error("invalid leaping year");
- return;
- }
- j = EPOCH_YEAR;
- while (j != year) {
- if (year > j) {
- i = len_years[isleap(j)];
- ++j;
- } else {
- --j;
- i = -len_years[isleap(j)];
- }
- dayoff = oadd(dayoff, eitol(i));
- }
- if ((lp = byword(fields[LP_MONTH], mon_names)) == NULL) {
- error("invalid month name");
- return;
- }
- month = lp->l_value;
- j = TM_JANUARY;
- while (j != month) {
- i = len_months[isleap(year)][j];
- dayoff = oadd(dayoff, eitol(i));
- ++j;
- }
- cp = fields[LP_DAY];
- if (sscanf((char *)cp, scheck(cp, "%d"), &day) != 1 ||
- day <= 0 || day > len_months[isleap(year)][month]) {
- error("invalid day of month");
- return;
- }
- dayoff = oadd(dayoff, eitol(day - 1));
- if (dayoff < 0 && !tt_signed) {
- error("time before zero");
- return;
- }
- t = (time_t) dayoff * SECSPERDAY;
- /*
- ** Cheap overflow check.
- */
- if (t / SECSPERDAY != dayoff) {
- error("time overflow");
- return;
- }
- tod = gethms(fields[LP_TIME], "invalid time of day", FALSE);
- cp = fields[LP_CORR];
- if (strcmp(cp, "+") != 0 && strcmp(cp, "") != 0) {
- /* infile() turned "-" into "" */
- error("illegal CORRECTION field on Leap line");
- return;
- }
- if ((lp = byword(fields[LP_ROLL], leap_types)) == NULL) {
- error("illegal Rolling/Stationary field on Leap line");
- return;
- }
- addleap(tadd(t, tod), *cp == '+', lp->l_value);
-}
-
-static void
-inlink(fields, nfields)
-register char ** const fields;
-const int nfields;
-{
- struct link l;
-
- if (nfields != LINK_FIELDS) {
- error("wrong number of fields on Link line");
- return;
- }
- if (*fields[LF_FROM] == '\0') {
- error("blank FROM field on Link line");
- return;
- }
- if (*fields[LF_TO] == '\0') {
- error("blank TO field on Link line");
- return;
- }
- l.l_filename = filename;
- l.l_linenum = linenum;
- l.l_from = ecpyalloc(fields[LF_FROM]);
- l.l_to = ecpyalloc(fields[LF_TO]);
- links = (struct link *) erealloc((char *) links,
- (int) ((nlinks + 1) * sizeof *links));
- links[nlinks++] = l;
-}
-
-static void
-rulesub(rp, loyearp, hiyearp, typep, monthp, dayp, timep)
-register struct rule * const rp;
-char * const loyearp;
-char * const hiyearp;
-char * const typep;
-char * const monthp;
-char * const dayp;
-char * const timep;
-{
- register struct lookup const * lp;
- register char * cp;
-
- if ((lp = byword(monthp, mon_names)) == NULL) {
- error("invalid month name");
- return;
- }
- rp->r_month = lp->l_value;
- rp->r_todisstd = FALSE;
- cp = timep;
- if (*cp != '\0') {
- cp += strlen(cp) - 1;
- switch (lowerit(*cp)) {
- case 's':
- rp->r_todisstd = TRUE;
- *cp = '\0';
- break;
- case 'w':
- rp->r_todisstd = FALSE;
- *cp = '\0';
- break;
- }
- }
- rp->r_tod = gethms(timep, "invalid time of day", FALSE);
- /*
- ** Year work.
- */
- cp = loyearp;
- if ((lp = byword(cp, begin_years)) != NULL) switch ((int) lp->l_value) {
- case YR_MINIMUM:
- rp->r_loyear = min_year;
- break;
- case YR_MAXIMUM:
- rp->r_loyear = max_year;
- break;
- default: /* "cannot happen" */
- (void) fprintf(stderr,
- "%s: panic: Invalid l_value %d\n",
- progname, lp->l_value);
- (void) exit(EXIT_FAILURE);
- } else if (sscanf(cp, scheck(cp, "%d"), &rp->r_loyear) != 1 ||
- rp->r_loyear < min_year || rp->r_loyear > max_year) {
- if (noise)
- error("invalid starting year");
- if (rp->r_loyear > max_year)
- return;
- }
- cp = hiyearp;
- if ((lp = byword(cp, end_years)) != NULL) switch ((int) lp->l_value) {
- case YR_MINIMUM:
- rp->r_hiyear = min_year;
- break;
- case YR_MAXIMUM:
- rp->r_hiyear = max_year;
- break;
- case YR_ONLY:
- rp->r_hiyear = rp->r_loyear;
- break;
- default: /* "cannot happen" */
- (void) fprintf(stderr,
- "%s: panic: Invalid l_value %d\n",
- progname, lp->l_value);
- (void) exit(EXIT_FAILURE);
- } else if (sscanf(cp, scheck(cp, "%d"), &rp->r_hiyear) != 1 ||
- rp->r_hiyear < min_year || rp->r_hiyear > max_year) {
- if (noise)
- error("invalid ending year");
- if (rp->r_hiyear < min_year)
- return;
- }
- if (rp->r_hiyear < min_year)
- return;
- if (rp->r_loyear < min_year)
- rp->r_loyear = min_year;
- if (rp->r_hiyear > max_year)
- rp->r_hiyear = max_year;
- if (rp->r_loyear > rp->r_hiyear) {
- error("starting year greater than ending year");
- return;
- }
- if (*typep == '\0')
- rp->r_yrtype = NULL;
- else {
- if (rp->r_loyear == rp->r_hiyear) {
- error("typed single year");
- return;
- }
- rp->r_yrtype = ecpyalloc(typep);
- }
- /*
- ** Day work.
- ** Accept things such as:
- ** 1
- ** last-Sunday
- ** Sun<=20
- ** Sun>=7
- */
- if ((lp = byword(dayp, lasts)) != NULL) {
- rp->r_dycode = DC_DOWLEQ;
- rp->r_wday = lp->l_value;
- rp->r_dayofmonth = len_months[1][rp->r_month];
- } else {
- if ((cp = strchr(dayp, '<')) != 0)
- rp->r_dycode = DC_DOWLEQ;
- else if ((cp = strchr(dayp, '>')) != 0)
- rp->r_dycode = DC_DOWGEQ;
- else {
- cp = dayp;
- rp->r_dycode = DC_DOM;
- }
- if (rp->r_dycode != DC_DOM) {
- *cp++ = 0;
- if (*cp++ != '=') {
- error("invalid day of month");
- return;
- }
- if ((lp = byword(dayp, wday_names)) == NULL) {
- error("invalid weekday name");
- return;
- }
- rp->r_wday = lp->l_value;
- }
- if (sscanf(cp, scheck(cp, "%d"), &rp->r_dayofmonth) != 1 ||
- rp->r_dayofmonth <= 0 ||
- (rp->r_dayofmonth > len_months[1][rp->r_month])) {
- error("invalid day of month");
- return;
- }
- }
-}
-
-static void
-convert(val, buf)
-const long val;
-char * const buf;
-{
- register int i;
- register long shift;
-
- for (i = 0, shift = 24; i < 4; ++i, shift -= 8)
- buf[i] = val >> shift;
-}
-
-static void
-puttzcode(val, fp)
-const long val;
-FILE * const fp;
-{
- char buf[4];
-
- convert(val, buf);
- (void) fwrite((void *) buf, (size_t) sizeof buf, (size_t) 1, fp);
-}
-
-static void
-writezone(name)
-const char * const name;
-{
- register FILE * fp;
- register int i, j;
- char fullname[BUFSIZ];
- static struct tzhead tzh;
-
- if (strlen(directory) + 1 + strlen(name) >= sizeof fullname) {
- (void) fprintf(stderr,
- "%s: File name %s/%s too long\n", progname,
- directory, name);
- (void) exit(EXIT_FAILURE);
- }
- (void) sprintf(fullname, "%s/%s", directory, name);
- if ((fp = fopen(fullname, "wb")) == NULL) {
- if (mkdirs(fullname) != 0)
- (void) exit(EXIT_FAILURE);
- if ((fp = fopen(fullname, "wb")) == NULL) {
- (void) fprintf(stderr, "%s: Can't create ", progname);
- (void) perror(fullname);
- (void) exit(EXIT_FAILURE);
- }
- }
- convert(eitol(typecnt), tzh.tzh_ttisstdcnt);
- convert(eitol(leapcnt), tzh.tzh_leapcnt);
- convert(eitol(timecnt), tzh.tzh_timecnt);
- convert(eitol(typecnt), tzh.tzh_typecnt);
- convert(eitol(charcnt), tzh.tzh_charcnt);
- (void) fwrite((void *) &tzh, (size_t) sizeof tzh, (size_t) 1, fp);
- for (i = 0; i < timecnt; ++i) {
- j = leapcnt;
- while (--j >= 0)
- if (ats[i] >= trans[j]) {
- ats[i] = tadd(ats[i], corr[j]);
- break;
- }
- puttzcode((long) ats[i], fp);
- }
- if (timecnt > 0)
- (void) fwrite((void *) types, (size_t) sizeof types[0],
- (size_t) timecnt, fp);
- for (i = 0; i < typecnt; ++i) {
- puttzcode((long) gmtoffs[i], fp);
- (void) putc(isdsts[i], fp);
- (void) putc(abbrinds[i], fp);
- }
- if (charcnt != 0)
- (void) fwrite((void *) chars, (size_t) sizeof chars[0],
- (size_t) charcnt, fp);
- for (i = 0; i < leapcnt; ++i) {
- if (roll[i]) {
- if (timecnt == 0 || trans[i] < ats[0]) {
- j = 0;
- while (isdsts[j])
- if (++j >= typecnt) {
- j = 0;
- break;
- }
- } else {
- j = 1;
- while (j < timecnt && trans[i] >= ats[j])
- ++j;
- j = types[j - 1];
- }
- puttzcode((long) tadd(trans[i], -gmtoffs[j]), fp);
- } else puttzcode((long) trans[i], fp);
- puttzcode((long) corr[i], fp);
- }
- for (i = 0; i < typecnt; ++i)
- (void) putc(ttisstds[i], fp);
- if (ferror(fp) || fclose(fp)) {
- (void) fprintf(stderr, "%s: Write error on ", progname);
- (void) perror(fullname);
- (void) exit(EXIT_FAILURE);
- }
-}
-
-static void
-outzone(zpfirst, zonecount)
-const struct zone * const zpfirst;
-const int zonecount;
-{
- register const struct zone * zp;
- register struct rule * rp;
- register int i, j;
- register int usestart, useuntil;
- register time_t starttime, untiltime;
- register long gmtoff;
- register long stdoff;
- register int year;
- register long startoff;
- register int startisdst;
- register int startttisstd;
- register int type;
- char startbuf[BUFSIZ];
-
- /*
- ** Now. . .finally. . .generate some useful data!
- */
- timecnt = 0;
- typecnt = 0;
- charcnt = 0;
- /*
- ** Two guesses. . .the second may well be corrected later.
- */
- gmtoff = zpfirst->z_gmtoff;
- stdoff = 0;
- starttime = 0;
- startttisstd = FALSE;
- for (i = 0; i < zonecount; ++i) {
- usestart = i > 0;
- useuntil = i < (zonecount - 1);
- zp = &zpfirst[i];
- eat(zp->z_filename, zp->z_linenum);
- startisdst = -1;
- if (zp->z_nrules == 0) {
- type = addtype(oadd(zp->z_gmtoff, zp->z_stdoff),
- zp->z_format, zp->z_stdoff != 0,
- startttisstd);
- if (usestart)
- addtt(starttime, type);
- gmtoff = zp->z_gmtoff;
- stdoff = zp->z_stdoff;
- } else for (year = min_year; year <= max_year; ++year) {
- if (useuntil && year > zp->z_untilrule.r_hiyear)
- break;
- /*
- ** Mark which rules to do in the current year.
- ** For those to do, calculate rpytime(rp, year);
- */
- for (j = 0; j < zp->z_nrules; ++j) {
- rp = &zp->z_rules[j];
- eats(zp->z_filename, zp->z_linenum,
- rp->r_filename, rp->r_linenum);
- rp->r_todo = year >= rp->r_loyear &&
- year <= rp->r_hiyear &&
- yearistype(year, rp->r_yrtype);
- if (rp->r_todo)
- rp->r_temp = rpytime(rp, year);
- }
- for ( ; ; ) {
- register int k;
- register time_t jtime, ktime;
- register long offset;
- char buf[BUFSIZ];
-
- if (useuntil) {
- /*
- ** Turn untiltime into GMT
- ** assuming the current gmtoff and
- ** stdoff values.
- */
- offset = gmtoff;
- if (!zp->z_untilrule.r_todisstd)
- offset = oadd(offset, stdoff);
- untiltime = tadd(zp->z_untiltime,
- -offset);
- }
- /*
- ** Find the rule (of those to do, if any)
- ** that takes effect earliest in the year.
- */
- k = -1;
-#ifdef lint
- ktime = 0;
-#endif /* defined lint */
- for (j = 0; j < zp->z_nrules; ++j) {
- rp = &zp->z_rules[j];
- if (!rp->r_todo)
- continue;
- eats(zp->z_filename, zp->z_linenum,
- rp->r_filename, rp->r_linenum);
- offset = gmtoff;
- if (!rp->r_todisstd)
- offset = oadd(offset, stdoff);
- jtime = rp->r_temp;
- if (jtime == min_time ||
- jtime == max_time)
- continue;
- jtime = tadd(jtime, -offset);
- if (k < 0 || jtime < ktime) {
- k = j;
- ktime = jtime;
- }
- }
- if (k < 0)
- break; /* go on to next year */
- rp = &zp->z_rules[k];
- rp->r_todo = FALSE;
- if (useuntil && ktime >= untiltime)
- break;
- if (usestart) {
- if (ktime < starttime) {
- stdoff = rp->r_stdoff;
- startoff = oadd(zp->z_gmtoff,
- rp->r_stdoff);
- (void) sprintf(startbuf,
- zp->z_format,
- rp->r_abbrvar);
- startisdst =
- rp->r_stdoff != 0;
- continue;
- }
- if (ktime != starttime &&
- startisdst >= 0)
-addtt(starttime, addtype(startoff, startbuf, startisdst, startttisstd));
- usestart = FALSE;
- }
- eats(zp->z_filename, zp->z_linenum,
- rp->r_filename, rp->r_linenum);
- (void) sprintf(buf, zp->z_format,
- rp->r_abbrvar);
- offset = oadd(zp->z_gmtoff, rp->r_stdoff);
- type = addtype(offset, buf, rp->r_stdoff != 0,
- rp->r_todisstd);
- if (timecnt != 0 || rp->r_stdoff != 0)
- addtt(ktime, type);
- gmtoff = zp->z_gmtoff;
- stdoff = rp->r_stdoff;
- }
- }
- /*
- ** Now we may get to set starttime for the next zone line.
- */
- if (useuntil) {
- starttime = tadd(zp->z_untiltime,
- -gmtoffs[types[timecnt - 1]]);
- startttisstd = zp->z_untilrule.r_todisstd;
- }
- }
- writezone(zpfirst->z_name);
-}
-
-static void
-addtt(starttime, type)
-const time_t starttime;
-const int type;
-{
- if (timecnt != 0 && type == types[timecnt - 1])
- return; /* easy enough! */
- if (timecnt >= TZ_MAX_TIMES) {
- error("too many transitions?!");
- (void) exit(EXIT_FAILURE);
- }
- ats[timecnt] = starttime;
- types[timecnt] = type;
- ++timecnt;
-}
-
-static int
-addtype(gmtoff, abbr, isdst, ttisstd)
-const long gmtoff;
-const char * const abbr;
-const int isdst;
-const int ttisstd;
-{
- register int i, j;
-
- /*
- ** See if there's already an entry for this zone type.
- ** If so, just return its index.
- */
- for (i = 0; i < typecnt; ++i) {
- if (gmtoff == gmtoffs[i] && isdst == isdsts[i] &&
- strcmp(abbr, &chars[abbrinds[i]]) == 0 &&
- ttisstd == ttisstds[i])
- return i;
- }
- /*
- ** There isn't one; add a new one, unless there are already too
- ** many.
- */
- if (typecnt >= TZ_MAX_TYPES) {
- error("too many local time types");
- (void) exit(EXIT_FAILURE);
- }
- gmtoffs[i] = gmtoff;
- isdsts[i] = isdst;
- ttisstds[i] = ttisstd;
-
- for (j = 0; j < charcnt; ++j)
- if (strcmp(&chars[j], abbr) == 0)
- break;
- if (j == charcnt)
- newabbr(abbr);
- abbrinds[i] = j;
- ++typecnt;
- return i;
-}
-
-static void
-addleap(t, positive, rolling)
-const time_t t;
-const int positive;
-const int rolling;
-{
- register int i, j;
-
- if (leapcnt >= TZ_MAX_LEAPS) {
- error("too many leap seconds");
- (void) exit(EXIT_FAILURE);
- }
- for (i = 0; i < leapcnt; ++i)
- if (t <= trans[i]) {
- if (t == trans[i]) {
- error("repeated leap second moment");
- (void) exit(EXIT_FAILURE);
- }
- break;
- }
- for (j = leapcnt; j > i; --j) {
- trans[j] = trans[j-1];
- corr[j] = corr[j-1];
- roll[j] = roll[j-1];
- }
- trans[i] = t;
- corr[i] = (positive ? 1L : -1L);
- roll[i] = rolling;
- ++leapcnt;
-}
-
-static void
-adjleap()
-{
- register int i;
- register long last = 0;
-
- /*
- ** propagate leap seconds forward
- */
- for (i = 0; i < leapcnt; ++i) {
- trans[i] = tadd(trans[i], last);
- last = corr[i] += last;
- }
-}
-
-static int
-yearistype(year, type)
-const int year;
-const char * const type;
-{
- char buf[BUFSIZ];
- int result;
-
- if (type == NULL || *type == '\0')
- return TRUE;
- if (strcmp(type, "uspres") == 0)
- return (year % 4) == 0;
- if (strcmp(type, "nonpres") == 0)
- return (year % 4) != 0;
- (void) sprintf(buf, "yearistype %d %s", year, type);
- result = system(buf);
- if (result == 0)
- return TRUE;
- if (result == (1 << 8))
- return FALSE;
- error("Wild result from command execution");
- (void) fprintf(stderr, "%s: command was '%s', result was %d\n",
- progname, buf, result);
- for ( ; ; )
- (void) exit(EXIT_FAILURE);
-}
-
-static int
-lowerit(a)
-const int a;
-{
- return (isascii(a) && isupper(a)) ? tolower(a) : a;
-}
-
-static int
-ciequal(ap, bp) /* case-insensitive equality */
-register const char * ap;
-register const char * bp;
-{
- while (lowerit(*ap) == lowerit(*bp++))
- if (*ap++ == '\0')
- return TRUE;
- return FALSE;
-}
-
-static int
-itsabbr(abbr, word)
-register const char * abbr;
-register const char * word;
-{
- if (lowerit(*abbr) != lowerit(*word))
- return FALSE;
- ++word;
- while (*++abbr != '\0')
- do if (*word == '\0')
- return FALSE;
- while (lowerit(*word++) != lowerit(*abbr));
- return TRUE;
-}
-
-static const struct lookup *
-byword(word, table)
-register const char * const word;
-register const struct lookup * const table;
-{
- register const struct lookup * foundlp;
- register const struct lookup * lp;
-
- if (word == NULL || table == NULL)
- return NULL;
- /*
- ** Look for exact match.
- */
- for (lp = table; lp->l_word != NULL; ++lp)
- if (ciequal(word, lp->l_word))
- return lp;
- /*
- ** Look for inexact match.
- */
- foundlp = NULL;
- for (lp = table; lp->l_word != NULL; ++lp)
- if (itsabbr(word, lp->l_word))
- if (foundlp == NULL)
- foundlp = lp;
- else return NULL; /* multiple inexact matches */
- return foundlp;
-}
-
-static char **
-getfields(cp)
-register char * cp;
-{
- register char * dp;
- register char ** array;
- register int nsubs;
-
- if (cp == NULL)
- return NULL;
- array = (char **) emalloc((int) ((strlen(cp) + 1) * sizeof *array));
- nsubs = 0;
- for ( ; ; ) {
- while (isascii(*cp) && isspace(*cp))
- ++cp;
- if (*cp == '\0' || *cp == '#')
- break;
- array[nsubs++] = dp = cp;
- do {
- if ((*dp = *cp++) != '"')
- ++dp;
- else while ((*dp = *cp++) != '"')
- if (*dp != '\0')
- ++dp;
- else error("Odd number of quotation marks");
- } while (*cp != '\0' && *cp != '#' &&
- (!isascii(*cp) || !isspace(*cp)));
- if (isascii(*cp) && isspace(*cp))
- ++cp;
- *dp = '\0';
- }
- array[nsubs] = NULL;
- return array;
-}
-
-static long
-oadd(t1, t2)
-const long t1;
-const long t2;
-{
- register long t;
-
- t = t1 + t2;
- if (t2 > 0 && t <= t1 || t2 < 0 && t >= t1) {
- error("time overflow");
- (void) exit(EXIT_FAILURE);
- }
- return t;
-}
-
-static time_t
-tadd(t1, t2)
-const time_t t1;
-const long t2;
-{
- register time_t t;
-
- if (t1 == max_time && t2 > 0)
- return max_time;
- if (t1 == min_time && t2 < 0)
- return min_time;
- t = t1 + t2;
- if (t2 > 0 && t <= t1 || t2 < 0 && t >= t1) {
- error("time overflow");
- (void) exit(EXIT_FAILURE);
- }
- return t;
-}
-
-/*
-** Given a rule, and a year, compute the date - in seconds since January 1,
-** 1970, 00:00 LOCAL time - in that year that the rule refers to.
-*/
-
-static time_t
-rpytime(rp, wantedy)
-register const struct rule * const rp;
-register const int wantedy;
-{
- register int y, m, i;
- register long dayoff; /* with a nod to Margaret O. */
- register time_t t;
-
- dayoff = 0;
- m = TM_JANUARY;
- y = EPOCH_YEAR;
- while (wantedy != y) {
- if (wantedy > y) {
- i = len_years[isleap(y)];
- ++y;
- } else {
- --y;
- i = -len_years[isleap(y)];
- }
- dayoff = oadd(dayoff, eitol(i));
- }
- while (m != rp->r_month) {
- i = len_months[isleap(y)][m];
- dayoff = oadd(dayoff, eitol(i));
- ++m;
- }
- i = rp->r_dayofmonth;
- if (m == TM_FEBRUARY && i == 29 && !isleap(y)) {
- if (rp->r_dycode == DC_DOWLEQ)
- --i;
- else {
- error("use of 2/29 in non leap-year");
- (void) exit(EXIT_FAILURE);
- }
- }
- --i;
- dayoff = oadd(dayoff, eitol(i));
- if (rp->r_dycode == DC_DOWGEQ || rp->r_dycode == DC_DOWLEQ) {
- register long wday;
-
-#define LDAYSPERWEEK ((long) DAYSPERWEEK)
- wday = eitol(EPOCH_WDAY);
- /*
- ** Don't trust mod of negative numbers.
- */
- if (dayoff >= 0)
- wday = (wday + dayoff) % LDAYSPERWEEK;
- else {
- wday -= ((-dayoff) % LDAYSPERWEEK);
- if (wday < 0)
- wday += LDAYSPERWEEK;
- }
- while (wday != eitol(rp->r_wday))
- if (rp->r_dycode == DC_DOWGEQ) {
- dayoff = oadd(dayoff, (long) 1);
- if (++wday >= LDAYSPERWEEK)
- wday = 0;
- ++i;
- } else {
- dayoff = oadd(dayoff, (long) -1);
- if (--wday < 0)
- wday = LDAYSPERWEEK - 1;
- --i;
- }
- if (i < 0 || i >= len_months[isleap(y)][m]) {
- error("no day in month matches rule");
- (void) exit(EXIT_FAILURE);
- }
- }
- if (dayoff < 0 && !tt_signed) {
- if (wantedy == rp->r_loyear)
- return min_time;
- error("time before zero");
- (void) exit(EXIT_FAILURE);
- }
- t = (time_t) dayoff * SECSPERDAY;
- /*
- ** Cheap overflow check.
- */
- if (t / SECSPERDAY != dayoff) {
- if (wantedy == rp->r_hiyear)
- return max_time;
- if (wantedy == rp->r_loyear)
- return min_time;
- error("time overflow");
- (void) exit(EXIT_FAILURE);
- }
- return tadd(t, rp->r_tod);
-}
-
-static void
-newabbr(string)
-const char * const string;
-{
- register int i;
-
- i = strlen(string) + 1;
- if (charcnt + i >= TZ_MAX_CHARS) {
- error("too many, or too long, time zone abbreviations");
- (void) exit(EXIT_FAILURE);
- }
- (void) strcpy(&chars[charcnt], string);
- charcnt += eitol(i);
-}
-
-static int
-mkdirs(name)
-char * const name;
-{
- register char * cp;
-
- if ((cp = name) == NULL || *cp == '\0')
- return 0;
- while ((cp = strchr(cp + 1, '/')) != 0) {
- *cp = '\0';
- if (!itsdir(name)) {
- /*
- ** It doesn't seem to exist, so we try to create it.
- */
- if (mkdir(name, 0755) != 0) {
- (void) fprintf(stderr,
- "%s: Can't create directory ",
- progname);
- (void) perror(name);
- return -1;
- }
- }
- *cp = '/';
- }
- return 0;
-}
-
-static long
-eitol(i)
-const int i;
-{
- long l;
-
- l = i;
- if (i < 0 && l >= 0 || i == 0 && l != 0 || i > 0 && l <= 0) {
- (void) fprintf(stderr, "%s: %d did not sign extend correctly\n",
- progname, i);
- (void) exit(EXIT_FAILURE);
- }
- return l;
-}
-
-/*
-** UNIX is a registered trademark of AT&T.
-*/
generated by cgit v1.2.3 (git 2.25.1) at 2025-02-21 21:49:44 +0000