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zic.c
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/*
** This file is in the public domain, so clarified as of
** 2006-07-17 by Arthur David Olson.
*/
static char elsieid[] = "@(#)zic.c 8.7";
#include "private.h"
#include "locale.h"
#include "tzfile.h"
#define ZIC_VERSION '2'
typedef int_fast64_t zic_t;
#ifndef ZIC_MAX_ABBR_LEN_WO_WARN
#define ZIC_MAX_ABBR_LEN_WO_WARN 6
#endif /* !defined ZIC_MAX_ABBR_LEN_WO_WARN */
#if HAVE_SYS_STAT_H
#include "sys/stat.h"
#endif
#ifdef S_IRUSR
#define MKDIR_UMASK (S_IRUSR|S_IWUSR|S_IXUSR|S_IRGRP|S_IXGRP|S_IROTH|S_IXOTH)
#else
#define MKDIR_UMASK 0755
#endif
/*
** On some ancient hosts, predicates like `isspace(C)' are defined
** only if isascii(C) || C == EOF. Modern hosts obey the C Standard,
** which says they are defined only if C == ((unsigned char) C) || C == EOF.
** Neither the C Standard nor Posix require that `isascii' exist.
** For portability, we check both ancient and modern requirements.
** If isascii is not defined, the isascii check succeeds trivially.
*/
#include "ctype.h"
#ifndef isascii
#define isascii(x) 1
#endif
#define OFFSET_STRLEN_MAXIMUM (7 + INT_STRLEN_MAXIMUM(long))
#define RULE_STRLEN_MAXIMUM 8 /* "Mdd.dd.d" */
#define end(cp) (strchr((cp), '\0'))
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_lowasnum;
int r_hiwasnum;
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_todisgmt; /* above is GMT 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) */
zic_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;
zic_t z_untiltime;
};
extern int getopt P((int argc, char * const argv[],
const char * options));
extern int link P((const char * fromname, const char * toname));
extern char * optarg;
extern int optind;
static void addtt P((zic_t starttime, int type));
static int addtype P((long gmtoff, const char * abbr, int isdst,
int ttisstd, int ttisgmt));
static void leapadd P((zic_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 convert64 P((zic_t val, char * buf));
static void dolink P((const char * fromfile, const char * tofile));
static void doabbr P((char * abbr, const char * format,
const char * letters, int isdst, int doquotes));
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 is32 P((zic_t x));
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 void puttzcode64 P((zic_t code, FILE * fp));
static int rcomp P((const void * leftp, const void * rightp));
static zic_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 int stringoffset P((char * result, long offset));
static int stringrule P((char * result, const struct rule * rp,
long dstoff, long gmtoff));
static void stringzone P((char * result,
const struct zone * zp, int ntzones));
static void setboundaries P((void));
static zic_t tadd P((zic_t t1, long t2));
static void usage P((void));
static void writezone P((const char * name, const char * string));
static int yearistype P((int year, const char * type));
#if !HAVE_STRERROR
static char * strerror P((int));
#endif /* !HAVE_STRERROR */
static int charcnt;
static int errors;
static const char * filename;
static int leapcnt;
static int leapseen;
static int leapminyear;
static int leapmaxyear;
static int linenum;
static int max_abbrvar_len;
static int max_format_len;
static zic_t max_time;
static int max_year;
static zic_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;
/*
** 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 struct attype {
zic_t at;
unsigned char type;
} attypes[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 ttisgmts[TZ_MAX_TYPES];
static char chars[TZ_MAX_CHARS];
static zic_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) {
const char *e = strerror(errno);
(void) fprintf(stderr, _("%s: Memory exhausted: %s\n"),
progname, e);
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.
*/
#if !HAVE_STRERROR
static char *
strerror(errnum)
int errnum;
{
extern char * sys_errlist[];
extern int sys_nerr;
return (errnum > 0 && errnum <= sys_nerr) ?
sys_errlist[errnum] : _("Unknown system error");
}
#endif /* !HAVE_STRERROR */
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
warning(string)
const char * const string;
{
char * cp;
cp = ecpyalloc(_("warning: "));
cp = ecatalloc(cp, string);
error(cp);
ifree(cp);
--errors;
}
static void
usage P((void))
{
(void) fprintf(stderr, _("%s: usage is %s \
[ --version ] [ -v ] [ -l localtime ] [ -p posixrules ] \\\n\
\t[ -d directory ] [ -L leapseconds ] [ -y yearistype ] [ filename ... ]\n"),
progname, progname);
exit(EXIT_FAILURE);
}
static const char * psxrules;
static const char * lcltime;
static const char * directory;
static const char * leapsec;
static const char * yitcommand;
int
main(argc, argv)
int argc;
char * argv[];
{
register int i;
register int j;
register int c;
#ifdef unix
(void) umask(umask(S_IWGRP | S_IWOTH) | (S_IWGRP | S_IWOTH));
#endif /* defined unix */
#if HAVE_GETTEXT
(void) setlocale(LC_ALL, "");
#ifdef TZ_DOMAINDIR
(void) bindtextdomain(TZ_DOMAIN, TZ_DOMAINDIR);
#endif /* defined TEXTDOMAINDIR */
(void) textdomain(TZ_DOMAIN);
#endif /* HAVE_GETTEXT */
progname = argv[0];
if (TYPE_BIT(zic_t) < 64) {
(void) fprintf(stderr, "%s: %s\n", progname,
_("wild compilation-time specification of zic_t"));
exit(EXIT_FAILURE);
}
for (i = 1; i < argc; ++i)
if (strcmp(argv[i], "--version") == 0) {
(void) printf("%s\n", elsieid);
exit(EXIT_SUCCESS);
}
while ((c = getopt(argc, argv, "d:l:p:L:vsy:")) != EOF && c != -1)
switch (c) {
default:
usage();
case 'd':
if (directory == NULL)
directory = optarg;
else {
(void) fprintf(stderr,
_("%s: More than one -d option specified\n"),
progname);
exit(EXIT_FAILURE);
}
break;
case 'l':
if (lcltime == NULL)
lcltime = optarg;
else {
(void) fprintf(stderr,
_("%s: More than one -l option specified\n"),
progname);
exit(EXIT_FAILURE);
}
break;
case 'p':
if (psxrules == NULL)
psxrules = optarg;
else {
(void) fprintf(stderr,
_("%s: More than one -p option specified\n"),
progname);
exit(EXIT_FAILURE);
}
break;
case 'y':
if (yitcommand == NULL)
yitcommand = optarg;
else {
(void) fprintf(stderr,
_("%s: More than one -y option specified\n"),
progname);
exit(EXIT_FAILURE);
}
break;
case 'L':
if (leapsec == NULL)
leapsec = optarg;
else {
(void) fprintf(stderr,
_("%s: More than one -L option specified\n"),
progname);
exit(EXIT_FAILURE);
}
break;
case 'v':
noise = TRUE;
break;
case 's':
(void) printf("%s: -s ignored\n", progname);
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)
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) {
eat(links[i].l_filename, links[i].l_linenum);
dolink(links[i].l_from, links[i].l_to);
if (noise)
for (j = 0; j < nlinks; ++j)
if (strcmp(links[i].l_to,
links[j].l_from) == 0)
warning(_("link to link"));
}
if (lcltime != NULL) {
eat("command line", 1);
dolink(lcltime, TZDEFAULT);
}
if (psxrules != NULL) {
eat("command line", 1);
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) {
int result;
if (mkdirs(toname) != 0)
exit(EXIT_FAILURE);
result = link(fromname, toname);
#if HAVE_SYMLINK
if (result != 0 &&
access(fromname, F_OK) == 0 &&
!itsdir(fromname)) {
const char *s = tofile;
register char * symlinkcontents = NULL;
while ((s = strchr(s+1, '/')) != NULL)
symlinkcontents =
ecatalloc(symlinkcontents,
"../");
symlinkcontents =
ecatalloc(symlinkcontents,
fromname);
result = symlink(symlinkcontents,
toname);
if (result == 0)
warning(_("hard link failed, symbolic link used"));
ifree(symlinkcontents);
}
#endif /* HAVE_SYMLINK */
if (result != 0) {
const char *e = strerror(errno);
(void) fprintf(stderr,
_("%s: Can't link from %s to %s: %s\n"),
progname, fromname, toname, e);
exit(EXIT_FAILURE);
}
}
ifree(fromname);
ifree(toname);
}
#define TIME_T_BITS_IN_FILE 64
static void
setboundaries P((void))
{
register int i;
min_time = -1;
for (i = 0; i < TIME_T_BITS_IN_FILE - 1; ++i)
min_time *= 2;
max_time = -(min_time + 1);
}
static int
itsdir(name)
const char * const name;
{
register char * myname;
register int accres;
myname = ecpyalloc(name);
myname = ecatalloc(myname, "/.");
accres = access(myname, F_OK);
ifree(myname);
return accres == 0;
}
/*
** Associate sets of rules with zones.
*/
/*
** Sort by rule name.
*/
static int
rcomp(cp1, cp2)
const void * cp1;
const void * cp2;
{
return strcmp(((const struct rule *) cp1)->r_name,
((const 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, j;
if (nrules != 0) {
(void) qsort((void *) rules, (size_t) nrules,
(size_t) sizeof *rules, rcomp);
for (i = 0; i < nrules - 1; ++i) {
if (strcmp(rules[i].r_name,
rules[i + 1].r_name) != 0)
continue;
if (strcmp(rules[i].r_filename,
rules[i + 1].r_filename) == 0)
continue;
eat(rules[i].r_filename, rules[i].r_linenum);
warning(_("same rule name in multiple files"));
eat(rules[i + 1].r_filename, rules[i + 1].r_linenum);
warning(_("same rule name in multiple files"));
for (j = i + 2; j < nrules; ++j) {
if (strcmp(rules[i].r_name,
rules[j].r_name) != 0)
break;
if (strcmp(rules[i].r_filename,
rules[j].r_filename) == 0)
continue;
if (strcmp(rules[i + 1].r_filename,
rules[j].r_filename) == 0)
continue;
break;
}
i = j - 1;
}
}
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)
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) {
const char *e = strerror(errno);
(void) fprintf(stderr, _("%s: Can't open %s: %s\n"),
progname, name, e);
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"));
exit(EXIT_FAILURE);
}
*cp = '\0';
fields = getfields(buf);
nfields = 0;
while (fields[nfields] != NULL) {
static char nada;
if (strcmp(fields[nfields], "-") == 0)
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);
exit(EXIT_FAILURE);
}
}
ifree((char *) fields);
}
if (ferror(fp)) {
(void) fprintf(stderr, _("%s: Error reading %s\n"),
progname, filename);
exit(EXIT_FAILURE);
}
if (fp != stdin && fclose(fp)) {
const char *e = strerror(errno);
(void) fprintf(stderr, _("%s: Error closing %s: %s\n"),
progname, filename, e);
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) &&
!(hh == HOURSPERDAY && mm == 0 && ss == 0)) {
error(errstring);
return 0;
}
if (noise && hh == HOURSPERDAY)
warning(_("24:00 not handled by pre-1998 versions of zic"));
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]);
if (max_abbrvar_len < strlen(r.r_abbrvar))
max_abbrvar_len = strlen(r.r_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"));