error(_("can't determine time zone abbrevation to use just after until time"));
error(_("can't determine time zone abbreviation to use just after until time"));
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 void * leftp, const void * 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));#if !(HAVE_STRERROR - 0)static char *	strerror P((int));#endif /* !(HAVE_STRERROR - 0) */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;/*** 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		2static 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 {	time_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 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) {		const char *e = strerror(errno);		(void) fprintf(stderr, _("%s: Memory exhausted: %s\n"),			progname, e);		(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.*/#if !(HAVE_STRERROR - 0)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 - 0) */static voideats(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 voideat(name, num)const char * const	name;const int		num;{	eats(name, num, (char *) NULL, -1);}static voiderror(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 voidwarning(string)const char * const	string;{	char *	cp;	cp = ecpyalloc("warning: ");	cp = ecatalloc(cp, string);	error(string);	ifree(cp);	--errors;}static voidusage 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;intmain(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 - 0	(void) setlocale(LC_MESSAGES, "");#ifdef TZ_DOMAINDIR	(void) bindtextdomain(TZ_DOMAIN, TZ_DOMAINDIR);#endif /* defined TEXTDOMAINDIR */	(void) textdomain(TZ_DOMAIN);#endif /* HAVE_GETTEXT - 0 */	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 voiddolink(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) {			const char *e = strerror(errno);			(void) fprintf(stderr,				_("%s: Can't link from %s to %s: %s\n"),				progname, fromname, toname, e);			(void) exit(EXIT_FAILURE);		}	}	ifree(fromname);	ifree(toname);}#ifndef INT_MAX#define INT_MAX	((int) (((unsigned)~0)>>1))#endif /* !defined INT_MAX */#ifndef INT_MIN#define INT_MIN	((int) ~(((unsigned)~0)>>1))#endif /* !defined INT_MIN *//*** The tz file format currently allows at most 32-bit quantities.** This restriction should be removed before signed 32-bit values** wrap around in 2038, but unfortunately this will require a** change to the tz file format.*/#define MAX_BITS_IN_FILE	32#define TIME_T_BITS_IN_FILE	((TYPE_BIT(time_t) < MAX_BITS_IN_FILE) ? TYPE_BIT(time_t) : MAX_BITS_IN_FILE)static voidsetboundaries P((void)){	if (TYPE_SIGNED(time_t)) {		min_time = ~ (time_t) 0;		min_time <<= TIME_T_BITS_IN_FILE - 1;		max_time = ~ (time_t) 0 - min_time;		if (sflag)			min_time = 0;	} else {		min_time = 0;		max_time = 2 - sflag;		max_time <<= TIME_T_BITS_IN_FILE - 1;		--max_time;	}	min_year = TM_YEAR_BASE + gmtime(&min_time)->tm_year;	max_year = TM_YEAR_BASE + gmtime(&max_time)->tm_year;}static intitsdir(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 intrcomp(cp1, cp2)const void *	cp1;const void *	cp2;{	return strcmp(((const struct rule *) cp1)->r_name,		((const struct rule *) cp2)->r_name);}static voidassociate 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)		(void) exit(EXIT_FAILURE);}static voidinfile(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);		(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 (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);					(void) exit(EXIT_FAILURE);			}		}		ifree((char *) fields);	}	if (ferror(fp)) {		(void) fprintf(stderr, _("%s: Error reading %s\n"),			progname, filename);		(void) 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);		(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 longgethms(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 voidinrule(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 intinzone(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 intinzcont(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 intinzsub(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 voidinleap(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 && !TYPE_SIGNED(time_t)) {		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 voidinlink(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 voidrulesub(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_todisgmt = FALSE;	dp = ecpyalloc(timep);	if (*dp != '\0') {		ep = dp + strlen(dp) - 1;		switch (lowerit(*ep)) {			case 's':	/* Standard */				rp->r_todisstd = TRUE;				rp->r_todisgmt = FALSE;				*ep = '\0';				break;			case 'w':	/* Wall */				rp->r_todisstd = FALSE;				rp->r_todisgmt = FALSE;				*ep = '\0';			case 'g':	/* Greenwich */			case 'u':	/* Universal */			case 'z':	/* Zulu */				rp->r_todisstd = TRUE;				rp->r_todisgmt = TRUE;				*ep = '\0';				break;		}	}	rp->r_tod = gethms(dp, _("invalid time of day"), FALSE);	ifree(dp);	/*	** Year work.	*/	cp = loyearp;	lp = byword(cp, begin_years);	if (lp != NULL) switch ((int) lp->l_value) {		case YR_MINIMUM:			rp->r_loyear = INT_MIN;			break;		case YR_MAXIMUM:			rp->r_loyear = INT_MAX;			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 = INT_MIN;			break;		case YR_MAXIMUM:			rp->r_hiyear = INT_MAX;			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 voidconvert(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 voidputtzcode(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 intatcomp(avp, bvp)void *	avp;void *	bvp;{	if (((struct attype *) avp)->at < ((struct attype *) bvp)->at)		return -1;	else if (((struct attype *) avp)->at > ((struct attype *) bvp)->at)		return 1;	else	return 0;}static voidwritezone(name)const char * const	name;{	register FILE *		fp;	register int		i, j;	static char *		fullname;	static struct tzhead	tzh;	time_t			ats[TZ_MAX_TIMES];	unsigned char		types[TZ_MAX_TIMES];	/*	** Sort.	*/	if (timecnt > 1)		(void) qsort((void *) attypes, (size_t) timecnt,			(size_t) sizeof *attypes, atcomp);	/*	** Optimize.	*/	{		int	fromi;		int	toi;		toi = 0;		fromi = 0;		if (isdsts[0] == 0)			while (attypes[fromi].type == 0)				++fromi;	/* handled by default rule */		for ( ; fromi < timecnt; ++fromi) {			if (toi != 0			    && ((attypes[fromi].at				 + gmtoffs[attypes[toi - 1].type])				<= (attypes[toi - 1].at				    + gmtoffs[toi == 1 ? 0					      : attypes[toi - 2].type]))) {				attypes[toi - 1].type = attypes[fromi].type;				continue;			}			if (toi == 0 ||				attypes[toi - 1].type != attypes[fromi].type)					attypes[toi++] = attypes[fromi];		}		timecnt = toi;	}	/*	** Transfer.	*/	for (i = 0; i < timecnt; ++i) {		ats[i] = attypes[i].at;		types[i] = attypes[i].type;	}	fullname = erealloc(fullname,		(int) (strlen(directory) + 1 + strlen(name) + 1));	(void) sprintf(fullname, "%s/%s", directory, name);	/*	** Remove old file, if any, to snap links.	*/	if (!itsdir(fullname) && remove(fullname) != 0 && errno != ENOENT) {		const char *e = strerror(errno);		(void) fprintf(stderr, _("%s: Can't remove %s: %s\n"),			progname, fullname, e);		(void) exit(EXIT_FAILURE);	}	if ((fp = fopen(fullname, "wb")) == NULL) {		if (mkdirs(fullname) != 0)			(void) exit(EXIT_FAILURE);		if ((fp = fopen(fullname, "wb")) == NULL) {			const char *e = strerror(errno);			(void) fprintf(stderr, _("%s: Can't create %s: %s\n"),				progname, fullname, e);			(void) exit(EXIT_FAILURE);		}	}	convert(eitol(typecnt), tzh.tzh_ttisgmtcnt);	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);#define DO(field)	(void) fwrite((void *) tzh.field, (size_t) sizeof tzh.field, (size_t) 1, fp)	DO(tzh_reserved);	DO(tzh_ttisgmtcnt);	DO(tzh_ttisstdcnt);	DO(tzh_leapcnt);	DO(tzh_timecnt);	DO(tzh_typecnt);	DO(tzh_charcnt);#undef DO	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);	for (i = 0; i < typecnt; ++i)		(void) putc(ttisgmts[i], fp);	if (ferror(fp) || fclose(fp)) {		(void) fprintf(stderr, _("%s: Error writing %s\n"),			progname, fullname);		(void) exit(EXIT_FAILURE);	}}static voiddoabbr(abbr, format, letters, isdst)char * const		abbr;const char * const	format;const char * const	letters;const int		isdst;{	if (strchr(format, '/') == NULL) {		if (letters == NULL)			(void) strcpy(abbr, format);		else	(void) sprintf(abbr, format, letters);	} else if (isdst)		(void) strcpy(abbr, strchr(format, '/') + 1);	else {		(void) strcpy(abbr, format);		*strchr(abbr, '/') = '\0';	}}static voidoutzone(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			startttisstd;	register int			startttisgmt;	register int			type;	char				startbuf[BUFSIZ];	INITIALIZE(untiltime);	INITIALIZE(starttime);	/*	** 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;	startttisgmt = FALSE;	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);		*startbuf = '\0';		startoff = zp->z_gmtoff;		if (zp->z_nrules == 0) {			stdoff = zp->z_stdoff;			doabbr(startbuf, zp->z_format,				(char *) NULL, stdoff != 0);			type = addtype(oadd(zp->z_gmtoff, stdoff),				startbuf, stdoff != 0, startttisstd,				startttisgmt);			if (usestart) {				addtt(starttime, type);				usestart = FALSE;			}			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_todisgmt)						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;				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_todisgmt ? 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;				stdoff = rp->r_stdoff;				if (usestart && ktime == starttime)					usestart = FALSE;				if (usestart) {					if (ktime < starttime) {						startoff = oadd(zp->z_gmtoff,							stdoff);						doabbr(startbuf, zp->z_format,							rp->r_abbrvar,							rp->r_stdoff != 0);						continue;					}					if (*startbuf == '\0' &&					    startoff == oadd(zp->z_gmtoff,					    stdoff)) {						doabbr(startbuf, zp->z_format,							rp->r_abbrvar,							rp->r_stdoff != 0);					}				}				eats(zp->z_filename, zp->z_linenum,					rp->r_filename, rp->r_linenum);				doabbr(buf, zp->z_format, rp->r_abbrvar,					rp->r_stdoff != 0);				offset = oadd(zp->z_gmtoff, rp->r_stdoff);				type = addtype(offset, buf, rp->r_stdoff != 0,					rp->r_todisstd, rp->r_todisgmt);				addtt(ktime, type);			}		}		if (usestart) {			if (*startbuf == '\0' &&				zp->z_format != NULL &&				strchr(zp->z_format, '%') == NULL &&				strchr(zp->z_format, '/') == NULL)					(void) strcpy(startbuf, zp->z_format);			eat(zp->z_filename, zp->z_linenum);			if (*startbuf == '\0')error(_("can't determine time zone abbrevation to use just after until time"));			else	addtt(starttime,					addtype(startoff, startbuf,						startoff != zp->z_gmtoff,						startttisstd,						startttisgmt));		}		/*		** Now we may get to set starttime for the next zone line.		*/		if (useuntil) {			startttisstd = zp->z_untilrule.r_todisstd;			startttisgmt = zp->z_untilrule.r_todisgmt;			starttime = zp->z_untiltime;			if (!startttisstd)				starttime = tadd(starttime, -stdoff);			if (!startttisgmt)				starttime = tadd(starttime, -gmtoff);		}	}	writezone(zpfirst->z_name);}static voidaddtt(starttime, type)const time_t	starttime;const int	type;{	if (timecnt >= TZ_MAX_TIMES) {		error(_("too many transitions?!"));		(void) exit(EXIT_FAILURE);	}	attypes[timecnt].at = starttime;	attypes[timecnt].type = type;	++timecnt;}static intaddtype(gmtoff, abbr, isdst, ttisstd, ttisgmt)const long		gmtoff;const char * const	abbr;const int		isdst;const int		ttisstd;const int		ttisgmt;{	register int	i, j;	if (isdst != TRUE && isdst != FALSE) {		error(_("internal error - addtype called with bad isdst"));		(void) exit(EXIT_FAILURE);	}	if (ttisstd != TRUE && ttisstd != FALSE) {		error(_("internal error - addtype called with bad ttisstd"));		(void) exit(EXIT_FAILURE);	}	if (ttisgmt != TRUE && ttisgmt != FALSE) {		error(_("internal error - addtype called with bad ttisgmt"));		(void) exit(EXIT_FAILURE);	}	/*	** 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] &&			ttisgmt == ttisgmts[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;	ttisgmts[i] = ttisgmt;	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 voidleapadd(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 voidadjleap 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 intyearistype(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 intlowerit(a)int	a;{	a = (unsigned char) a;	return (isascii(a) && isupper(a)) ? tolower(a) : a;}static intciequal(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 intitsabbr(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((unsigned char) *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((unsigned char) *cp)));		if (isascii(*cp) && isspace((unsigned char) *cp))			++cp;		*dp = '\0';	}	array[nsubs] = NULL;	return array;}