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-rw-r--r--time/zic.c1956
1 files changed, 0 insertions, 1956 deletions
diff --git a/time/zic.c b/time/zic.c
deleted file mode 100644
index 73ea46821..000000000
--- a/time/zic.c
+++ /dev/null
@@ -1,1956 +0,0 @@
-#ifndef lint
-#ifndef NOID
-static char elsieid[] = "@(#)zic.c 7.28";
-#endif /* !defined NOID */
-#endif /* !defined lint */
-
-#include "private.h"
-#include "tzfile.h"
-
-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 */
- int r_todisuniv; /* above is universal time if TRUE */
- /* or local 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 int emkdir P((const char * name, int mode));
-extern int getopt P((int argc, char * argv[], const char * options));
-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 void * irealloc P((void * old, int n));
-extern int link P((const char * fromname, const char * toname));
-extern char * optarg;
-extern int optind;
-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 leapadd P((time_t t, int positive, int rolling, int count));
-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((const 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 genericptr_T leftp, const genericptr_T rightp));
-static time_t rpytime P((const struct rule * rp, int wantedy));
-static void rulesub P((struct rule * rp,
- const char * loyearp, const char * hiyearp,
- const char * typep, const char * monthp,
- const char * dayp, const 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 int max_int;
-static time_t max_time;
-static int max_year;
-static int min_int;
-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 unsigned 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 P((void))
-{
- (void) fprintf(stderr,
-"%s: usage is %s [ -s ] [ -v ] [ -l localtime ] [ -p posixrules ] [ -d directory ] \n\
-\t[ -L leapseconds ] [ -y yearistype ] [ filename ... ]\n",
- progname, progname);
- (void) exit(EXIT_FAILURE);
-}
-
-static const char * psxrules;
-static const char * lcltime;
-static const char * directory;
-static const char * leapsec;
-static const char * yitcommand;
-static int sflag = FALSE;
-
-int
-main(argc, argv)
-int argc;
-char * argv[];
-{
- register int i, j;
- register int c;
-
-#ifdef unix
- (void) umask(umask(022) | 022);
-#endif /* defined unix */
- progname = argv[0];
- while ((c = getopt(argc, argv, "d:l:p:L:vsy:")) != 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 'y':
- if (yitcommand == NULL)
- yitcommand = optarg;
- else {
- (void) fprintf(stderr,
-"%s: More than one -y 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;
- if (yitcommand == NULL)
- yitcommand = "yearistype";
-
- setboundaries();
-
- if (optind < argc && leapsec != NULL) {
- infile(leapsec);
- adjleap();
- }
-
- 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)
- continue;
- 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;
-
- if (fromfile[0] == '/')
- fromname = ecpyalloc(fromfile);
- else {
- fromname = ecpyalloc(directory);
- fromname = ecatalloc(fromname, "/");
- fromname = ecatalloc(fromname, fromfile);
- }
- if (tofile[0] == '/')
- toname = ecpyalloc(tofile);
- else {
- 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) {
- if (mkdirs(toname) != 0)
- (void) exit(EXIT_FAILURE);
- 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 P((void))
-{
- register time_t bit;
- register int bii;
-
- for (bit = 1; bit > 0; bit <<= 1)
- continue;
- 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;
-
- for (bii = 1; bii > 0; bii <<= 1)
- continue;
- min_int = bii;
- max_int = -1 - bii;
-}
-
-static int
-itsdir(name)
-const char * const name;
-{
- register char * myname;
- register int accres;
-
- myname = ecpyalloc(name);
- myname = ecatalloc(myname, "/.");
- accres = access(myname, 0);
- ifree(myname);
- return accres == 0;
-}
-
-/*
-** Associate sets of rules with zones.
-*/
-
-/*
-** Sort by rule name.
-*/
-
-static int
-rcomp(cp1, cp2)
-const genericptr_T cp1;
-const genericptr_T cp2;
-{
- return strcmp(((struct rule *) cp1)->r_name,
- ((struct rule *) cp2)->r_name);
-}
-
-static void
-associate P((void))
-{
- register struct zone * zp;
- register struct rule * rp;
- register int base, out;
- register int i;
-
- if (nrules != 0)
- (void) qsort((genericptr_T) rules,
- (qsort_size_T) nrules,
- (qsort_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(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) {
- static char nada;
-
- if (ciequal(fields[nfields], "-"))
- fields[nfields] = &nada;
- ++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)
-const 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 *) (void *) 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;
- static char * buf;
-
- 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) {
- buf = erealloc(buf, (int) (132 + strlen(TZDEFAULT)));
- (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) {
- buf = erealloc(buf, (int) (132 + strlen(TZDEFRULES)));
- (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) {
- buf = erealloc(buf, (int) (132 +
- strlen(fields[ZF_NAME]) +
- strlen(zones[i].z_filename)));
- (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 > min_time &&
- z.z_untiltime < max_time &&
- zones[nzones - 1].z_untiltime > min_time &&
- zones[nzones - 1].z_untiltime < max_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 *) (void *) 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(cp, scheck(cp, "%d"), &year) != 1) {
- /*
- * 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(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];
- {
- register int positive;
- int count;
-
- if (strcmp(cp, "") == 0) { /* infile() turns "-" into "" */
- positive = FALSE;
- count = 1;
- } else if (strcmp(cp, "--") == 0) {
- positive = FALSE;
- count = 2;
- } else if (strcmp(cp, "+") == 0) {
- positive = TRUE;
- count = 1;
- } else if (strcmp(cp, "++") == 0) {
- positive = TRUE;
- count = 2;
- } else {
- 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;
- }
- leapadd(tadd(t, tod), positive, lp->l_value, count);
- }
-}
-
-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 *) (void *) 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;
-const char * const loyearp;
-const char * const hiyearp;
-const char * const typep;
-const char * const monthp;
-const char * const dayp;
-const char * const timep;
-{
- register const struct lookup * lp;
- register const char * cp;
- register char * dp;
- register char * ep;
-
- if ((lp = byword(monthp, mon_names)) == NULL) {
- error("invalid month name");
- return;
- }
- rp->r_month = lp->l_value;
- rp->r_todisstd = FALSE;
- rp->r_todisuniv = FALSE;
- dp = ecpyalloc(timep);
- if (*dp != '\0') {
- ep = dp + strlen(dp) - 1;
- switch (lowerit(*ep)) {
- case 's': /* Standard */
- rp->r_todisstd = TRUE;
- rp->r_todisuniv = FALSE;
- *ep = '\0';
- break;
- case 'w': /* Wall */
- rp->r_todisstd = FALSE;
- rp->r_todisuniv = FALSE;
- *ep = '\0';
- case 'g': /* Greenwich */
- case 'u': /* Universal */
- case 'z': /* Zulu */
- rp->r_todisstd = TRUE;
- rp->r_todisuniv = TRUE;
- *ep = '\0';
- break;
- }
- }
- rp->r_tod = gethms(dp, "invalid time of day", FALSE);
- ifree(dp);
- /*
- ** Year work.
- */
- cp = loyearp;
- if ((lp = byword(cp, begin_years)) != NULL) switch ((int) lp->l_value) {
- case YR_MINIMUM:
- rp->r_loyear = min_int;
- break;
- case YR_MAXIMUM:
- rp->r_loyear = max_int;
- 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) {
- error("invalid starting year");
- return;
- }
- cp = hiyearp;
- if ((lp = byword(cp, end_years)) != NULL) switch ((int) lp->l_value) {
- case YR_MINIMUM:
- rp->r_hiyear = min_int;
- break;
- case YR_MAXIMUM:
- rp->r_hiyear = max_int;
- 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) {
- error("invalid ending year");
- return;
- }
- 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
- */
- dp = ecpyalloc(dayp);
- if ((lp = byword(dp, lasts)) != NULL) {
- rp->r_dycode = DC_DOWLEQ;
- rp->r_wday = lp->l_value;
- rp->r_dayofmonth = len_months[1][rp->r_month];
- } else {
- if ((ep = strchr(dp, '<')) != 0)
- rp->r_dycode = DC_DOWLEQ;
- else if ((ep = strchr(dp, '>')) != 0)
- rp->r_dycode = DC_DOWGEQ;
- else {
- ep = dp;
- rp->r_dycode = DC_DOM;
- }
- if (rp->r_dycode != DC_DOM) {
- *ep++ = 0;
- if (*ep++ != '=') {
- error("invalid day of month");
- ifree(dp);
- return;
- }
- if ((lp = byword(dp, wday_names)) == NULL) {
- error("invalid weekday name");
- ifree(dp);
- return;
- }
- rp->r_wday = lp->l_value;
- }
- if (sscanf(ep, scheck(ep, "%d"), &rp->r_dayofmonth) != 1 ||
- rp->r_dayofmonth <= 0 ||
- (rp->r_dayofmonth > len_months[1][rp->r_month])) {
- error("invalid day of month");
- ifree(dp);
- return;
- }
- }
- ifree(dp);
-}
-
-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((genericptr_T) buf,
- (fwrite_size_T) sizeof buf,
- (fwrite_size_T) 1, fp);
-}
-
-static void
-writezone(name)
-const char * const name;
-{
- register FILE * fp;
- register int i, j;
- static char * fullname;
- static struct tzhead tzh;
-
- fullname = erealloc(fullname,
- (int) (strlen(directory) + 1 + strlen(name) + 1));
- (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((genericptr_T) &tzh,
- (fwrite_size_T) sizeof tzh,
- (fwrite_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((genericptr_T) types,
- (fwrite_size_T) sizeof types[0],
- (fwrite_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((genericptr_T) chars,
- (fwrite_size_T) sizeof chars[0],
- (fwrite_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];
-
- INITIALIZE(untiltime);
- INITIALIZE(starttime);
- INITIALIZE(startoff);
- /*
- ** Now. . .finally. . .generate some useful data!
- */
- timecnt = 0;
- typecnt = 0;
- charcnt = 0;
- /*
- ** A guess that may well be corrected later.
- */
- stdoff = 0;
- /*
- ** Thanks to Earl Chew (earl@dnd.icp.nec.com.au)
- ** for noting the need to unconditionally initialize startttisstd.
- */
- startttisstd = FALSE;
-#ifdef lint
- starttime = 0;
-#endif /* defined lint */
- for (i = 0; i < zonecount; ++i) {
- zp = &zpfirst[i];
- usestart = i > 0 && (zp - 1)->z_untiltime > min_time;
- useuntil = i < (zonecount - 1);
- if (useuntil && zp->z_untiltime <= min_time)
- continue;
- gmtoff = zp->z_gmtoff;
- eat(zp->z_filename, zp->z_linenum);
- startisdst = -1;
- if (zp->z_nrules == 0) {
- stdoff = zp->z_stdoff;
- (void) strcpy(startbuf, zp->z_format);
- type = addtype(oadd(zp->z_gmtoff, stdoff),
- startbuf, stdoff != 0, startttisstd);
- if (usestart)
- addtt(starttime, type);
- else if (stdoff != 0)
- addtt(min_time, type);
- } 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];
-
- INITIALIZE(ktime);
- if (useuntil) {
- /*
- ** Turn untiltime into GMT
- ** assuming the current gmtoff and
- ** stdoff values.
- */
- untiltime = zp->z_untiltime;
- if (!zp->z_untilrule.r_todisuniv)
- untiltime = tadd(untiltime,
- -gmtoff);
- if (!zp->z_untilrule.r_todisstd)
- untiltime = tadd(untiltime,
- -stdoff);
- }
- /*
- ** 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 = rp->r_todisuniv ? 0 : 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;
- }
- usestart = FALSE;
- if (ktime != starttime) {
- if (startisdst < 0 &&
- zp->z_gmtoff !=
- (zp - 1)->z_gmtoff) {
- type = (timecnt == 0) ? 0 :
- types[timecnt - 1];
- startoff = oadd(gmtoffs[type],
- -(zp - 1)->z_gmtoff);
- startisdst = startoff != 0;
- startoff = oadd(startoff,
- zp->z_gmtoff);
- (void) strcpy(startbuf,
- &chars[abbrinds[type]]);
- }
- if (startisdst >= 0)
-addtt(starttime, addtype(startoff, startbuf, startisdst, startttisstd));
- }
- }
- 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);
- addtt(ktime, type);
- stdoff = rp->r_stdoff;
- }
- }
- /*
- ** Now we may get to set starttime for the next zone line.
- */
- if (useuntil) {
- starttime = tadd(zp->z_untiltime, -gmtoff);
- startttisstd = zp->z_untilrule.r_todisstd;
- if (!startttisstd)
- starttime = tadd(starttime, -stdoff);
- }
- }
- 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 == 0 && type == 0 && isdsts[0] == 0)
- return; /* handled by default rule */
- 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
-leapadd(t, positive, rolling, count)
-const time_t t;
-const int positive;
-const int rolling;
-int count;
-{
- register int i, j;
-
- if (leapcnt + (positive ? count : 1) > 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;
- }
- do {
- 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 : eitol(-count);
- roll[i] = rolling;
- ++leapcnt;
- } while (positive && --count != 0);
-}
-
-static void
-adjleap P((void))
-{
- 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;
-{
- static char * buf;
- int result;
-
- if (type == NULL || *type == '\0')
- return TRUE;
- buf = erealloc(buf, (int) (132 + strlen(yitcommand) + strlen(type)));
- (void) sprintf(buf, "%s %d %s", yitcommand, 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 **) (void *)
- 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;
-
- if (wantedy == min_int)
- return min_time;
- if (wantedy == max_int)
- return max_time;
- 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)
- return min_time;
- t = (time_t) dayoff * SECSPERDAY;
- /*
- ** Cheap overflow check.
- */
- if (t / SECSPERDAY != dayoff)
- return (dayoff > 0) ? max_time : min_time;
- 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(argname)
-char * const argname;
-{
- register char * name;
- register char * cp;
-
- if (argname == NULL || *argname == '\0')
- return 0;
- cp = name = ecpyalloc(argname);
- while ((cp = strchr(cp + 1, '/')) != 0) {
- *cp = '\0';
-#ifndef unix
- /*
- ** MS-DOS drive specifier?
- */
- if (strlen(name) == 2 && isascii(name[0]) &&
- isalpha(name[0]) && name[1] == ':') {
- *cp = '/';
- continue;
- }
-#endif /* !defined unix */
- if (!itsdir(name)) {
- /*
- ** It doesn't seem to exist, so we try to create it.
- */
- if (emkdir(name, 0755) != 0) {
- (void) fprintf(stderr,
- "%s: Can't create directory ",
- progname);
- (void) perror(name);
- ifree(name);
- return -1;
- }
- }
- *cp = '/';
- }
- ifree(name);
- 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 was a registered trademark of UNIX System Laboratories in 1993.
-*/
generated by cgit v1.2.3-55-g7522 (git 2.39.0) at 2024-06-07 21:22:33 +0200