Check in the pristine copy of ICU 4.6...

icu46/source/tools/tzcode/zdump.c

Index: icu46/source/tools/tzcode/zdump.c
===================================================================
--- icu46/source/tools/tzcode/zdump.c	(revision 0)
+++ icu46/source/tools/tzcode/zdump.c	(revision 0)
@@ -0,0 +1,1039 @@
+static char	elsieid[] = "@(#)zdump.c	8.8";
+
+/*
+** This code has been made independent of the rest of the time
+** conversion package to increase confidence in the verification it provides.
+** You can use this code to help in verifying other implementations.
+*/
+
+/*
+ * ICU note: Mr. Arthur David Olson (olsona@dc37a.nci.nih.gov) stated that
+ * "zdump.c is indeed in the public domain" in e-mail on Feb 22, 2007.
+ * This version of zdump.c is modified by ICU team to change output format
+ * and some additional options.
+ */
+
+
+#include "stdio.h"	/* for stdout, stderr, perror */
+#include "string.h"	/* for strcpy */
+#include "sys/types.h"	/* for time_t */
+#include "time.h"	/* for struct tm */
+#include "stdlib.h"	/* for exit, malloc, atoi */
+#include "float.h"	/* for FLT_MAX and DBL_MAX */
+#include "ctype.h"	/* for isalpha et al. */
+
+/* Enable extensions and modifications for ICU. */
+#define ICU
+
+#ifdef ICU
+#include "dirent.h"
+#endif
+
+#ifndef isascii
+#define isascii(x) 1
+#endif /* !defined isascii */
+
+#ifndef ZDUMP_LO_YEAR
+#define ZDUMP_LO_YEAR	(-500)
+#endif /* !defined ZDUMP_LO_YEAR */
+
+#ifndef ZDUMP_HI_YEAR
+#define ZDUMP_HI_YEAR	2500
+#endif /* !defined ZDUMP_HI_YEAR */
+
+#ifndef MAX_STRING_LENGTH
+#define MAX_STRING_LENGTH	1024
+#endif /* !defined MAX_STRING_LENGTH */
+
+#ifndef TRUE
+#define TRUE		1
+#endif /* !defined TRUE */
+
+#ifndef FALSE
+#define FALSE		0
+#endif /* !defined FALSE */
+
+#ifndef EXIT_SUCCESS
+#define EXIT_SUCCESS	0
+#endif /* !defined EXIT_SUCCESS */
+
+#ifndef EXIT_FAILURE
+#define EXIT_FAILURE	1
+#endif /* !defined EXIT_FAILURE */
+
+#ifndef SECSPERMIN
+#define SECSPERMIN	60
+#endif /* !defined SECSPERMIN */
+
+#ifndef MINSPERHOUR
+#define MINSPERHOUR	60
+#endif /* !defined MINSPERHOUR */
+
+#ifndef SECSPERHOUR
+#define SECSPERHOUR	(SECSPERMIN * MINSPERHOUR)
+#endif /* !defined SECSPERHOUR */
+
+#ifndef HOURSPERDAY
+#define HOURSPERDAY	24
+#endif /* !defined HOURSPERDAY */
+
+#ifndef EPOCH_YEAR
+#define EPOCH_YEAR	1970
+#endif /* !defined EPOCH_YEAR */
+
+#ifndef TM_YEAR_BASE
+#define TM_YEAR_BASE	1900
+#endif /* !defined TM_YEAR_BASE */
+
+#ifndef DAYSPERNYEAR
+#define DAYSPERNYEAR	365
+#endif /* !defined DAYSPERNYEAR */
+
+#ifndef isleap
+#define isleap(y) (((y) % 4) == 0 && (((y) % 100) != 0 || ((y) % 400) == 0))
+#endif /* !defined isleap */
+
+#ifndef isleap_sum
+/*
+** See tzfile.h for details on isleap_sum.
+*/
+#define isleap_sum(a, b)	isleap((a) % 400 + (b) % 400)
+#endif /* !defined isleap_sum */
+
+#define SECSPERDAY	((long) SECSPERHOUR * HOURSPERDAY)
+#define SECSPERNYEAR	(SECSPERDAY * DAYSPERNYEAR)
+#define SECSPERLYEAR	(SECSPERNYEAR + SECSPERDAY)
+
+#ifndef HAVE_GETTEXT
+#define HAVE_GETTEXT 0
+#endif
+#if HAVE_GETTEXT
+#include "locale.h"	/* for setlocale */
+#include "libintl.h"
+#endif /* HAVE_GETTEXT */
+
+#ifndef GNUC_or_lint
+#ifdef lint
+#define GNUC_or_lint
+#else /* !defined lint */
+#ifdef __GNUC__
+#define GNUC_or_lint
+#endif /* defined __GNUC__ */
+#endif /* !defined lint */
+#endif /* !defined GNUC_or_lint */
+
+#ifndef INITIALIZE
+#ifdef GNUC_or_lint
+#define INITIALIZE(x)	((x) = 0)
+#else /* !defined GNUC_or_lint */
+#define INITIALIZE(x)
+#endif /* !defined GNUC_or_lint */
+#endif /* !defined INITIALIZE */
+
+/*
+** For the benefit of GNU folk...
+** `_(MSGID)' uses the current locale's message library string for MSGID.
+** The default is to use gettext if available, and use MSGID otherwise.
+*/
+
+#ifndef _
+#if HAVE_GETTEXT
+#define _(msgid) gettext(msgid)
+#else /* !HAVE_GETTEXT */
+#define _(msgid) msgid
+#endif /* !HAVE_GETTEXT */
+#endif /* !defined _ */
+
+#ifndef TZ_DOMAIN
+#define TZ_DOMAIN "tz"
+#endif /* !defined TZ_DOMAIN */
+
+extern char **	environ;
+extern int	getopt(int argc, char * const argv[],
+			const char * options);
+extern char *	optarg;
+extern int	optind;
+extern char *	tzname[2];
+
+static time_t	absolute_min_time;
+static time_t	absolute_max_time;
+static size_t	longest;
+static char *	progname;
+static int	warned;
+
+static char *	abbr(struct tm * tmp);
+static void	abbrok(const char * abbrp, const char * zone);
+static long	delta(struct tm * newp, struct tm * oldp);
+static void	dumptime(const struct tm * tmp);
+static time_t	hunt(char * name, time_t lot, time_t	hit);
+static void	setabsolutes(void);
+static void	show(char * zone, time_t t, int v);
+static const char *	tformat(void);
+static time_t	yeartot(long y);
+#ifdef ICU
+typedef struct listentry {
+	char *		name;
+	struct listentry *	next;
+} listentry;
+
+static time_t	huntICU(char * name, time_t lot, time_t	hit, FILE *fp);
+static void	dumptimeICU(FILE * fp, time_t t);
+static void	showICU(FILE * fp, char * zone, time_t t1, time_t t2);
+static int	getall(struct listentry ** namelist);
+static void getzones(char * basedir, char * subdir, struct listentry ** last, int * count);
+#endif
+
+#ifndef TYPECHECK
+#define my_localtime	localtime
+#else /* !defined TYPECHECK */
+static struct tm *
+my_localtime(tp)
+time_t *	tp;
+{
+	register struct tm *	tmp;
+
+	tmp = localtime(tp);
+	if (tp != NULL && tmp != NULL) {
+		struct tm	tm;
+		register time_t	t;
+
+		tm = *tmp;
+		t = mktime(&tm);
+		if (t - *tp >= 1 || *tp - t >= 1) {
+			(void) fflush(stdout);
+			(void) fprintf(stderr, "\n%s: ", progname);
+			(void) fprintf(stderr, tformat(), *tp);
+			(void) fprintf(stderr, " ->");
+			(void) fprintf(stderr, " year=%d", tmp->tm_year);
+			(void) fprintf(stderr, " mon=%d", tmp->tm_mon);
+			(void) fprintf(stderr, " mday=%d", tmp->tm_mday);
+			(void) fprintf(stderr, " hour=%d", tmp->tm_hour);
+			(void) fprintf(stderr, " min=%d", tmp->tm_min);
+			(void) fprintf(stderr, " sec=%d", tmp->tm_sec);
+			(void) fprintf(stderr, " isdst=%d", tmp->tm_isdst);
+			(void) fprintf(stderr, " -> ");
+			(void) fprintf(stderr, tformat(), t);
+			(void) fprintf(stderr, "\n");
+		}
+	}
+	return tmp;
+}
+#endif /* !defined TYPECHECK */
+
+static void
+abbrok(abbrp, zone)
+const char * const	abbrp;
+const char * const	zone;
+{
+	register const char *	cp;
+	register char *		wp;
+
+	if (warned)
+		return;
+	cp = abbrp;
+	wp = NULL;
+	while (isascii((unsigned char) *cp) && isalpha((unsigned char) *cp))
+		++cp;
+	if (cp - abbrp == 0)
+		wp = _("lacks alphabetic at start");
+	else if (cp - abbrp < 3)
+		wp = _("has fewer than 3 alphabetics");
+	else if (cp - abbrp > 6)
+		wp = _("has more than 6 alphabetics");
+	if (wp == NULL && (*cp == '+' || *cp == '-')) {
+		++cp;
+		if (isascii((unsigned char) *cp) &&
+			isdigit((unsigned char) *cp))
+				if (*cp++ == '1' && *cp >= '0' && *cp <= '4')
+					++cp;
+		if (*cp != '\0')
+			wp = _("differs from POSIX standard");
+	}
+	if (wp == NULL)
+		return;
+	(void) fflush(stdout);
+	(void) fprintf(stderr,
+		_("%s: warning: zone \"%s\" abbreviation \"%s\" %s\n"),
+		progname, zone, abbrp, wp);
+	warned = TRUE;
+}
+
+static void
+usage(const char *progname, FILE *stream, int status)
+{
+	(void) fprintf(stream,
+_("%s: usage is %s [ --version ] [ --help ] [ -v ] [ -c [loyear,]hiyear ] zonename ...\n\
+\n\
+Report bugs to tz@elsie.nci.nih.gov.\n"),
+		       progname, progname);
+	exit(status);
+}
+
+int
+main(argc, argv)
+int	argc;
+char *	argv[];
+{
+	register int		i;
+	register int		c;
+	register int		vflag;
+	register char *		cutarg;
+	register long		cutloyear = ZDUMP_LO_YEAR;
+	register long		cuthiyear = ZDUMP_HI_YEAR;
+	register time_t		cutlotime;
+	register time_t		cuthitime;
+	register char **	fakeenv;
+	time_t			now;
+	time_t			t;
+	time_t			newt;
+	struct tm		tm;
+	struct tm		newtm;
+	register struct tm *	tmp;
+	register struct tm *	newtmp;
+#ifdef ICU
+	int		nextopt;
+	char *	dirarg;
+	int		aflag;
+	int		iflag;
+	listentry *	namelist = NULL;
+	FILE *	fp = stdout;
+#endif
+
+	INITIALIZE(cutlotime);
+	INITIALIZE(cuthitime);
+#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];
+	for (i = 1; i < argc; ++i)
+		if (strcmp(argv[i], "--version") == 0) {
+			(void) printf("%s\n", elsieid);
+			exit(EXIT_SUCCESS);
+		} else if (strcmp(argv[i], "--help") == 0) {
+			usage(progname, stdout, EXIT_SUCCESS);
+		}
+	vflag = 0;
+	cutarg = NULL;
+#ifdef ICU
+	aflag = 0;
+	iflag = 0;
+	dirarg = NULL;
+	nextopt = 1;
+	while(nextopt) {
+		c = getopt(argc, argv, "ac:d:iv");
+		switch(c) {
+		case 'a':
+			aflag = 1;
+			break;
+		case 'c':
+			cutarg = optarg;
+			break;
+		case 'd':
+			dirarg = optarg;
+			break;
+		case 'i':
+			iflag = 1;
+			break;
+		case 'v':
+			vflag = 1;
+			break;
+		default:
+			nextopt = 0;
+			break;
+		}
+	}
+	if ((c != EOF && c != -1) ||
+		(optind == argc - 1 && strcmp(argv[optind], "=") == 0)) {
+			(void) fprintf(stderr,
+				_("%s: usage is %s [ --version ] [ -a ] [ -v ] [ -i ] [ -c [loyear,]hiyear ] [ -d dir ] [ zonename ... ]\n"),
+				progname, progname);
+			exit(EXIT_FAILURE);
+	}
+
+	if (dirarg != NULL) {
+		DIR *	dp;
+		/* create the output directory */
+		mkdir(dirarg, 0777);
+		if ((dp = opendir(dirarg)) == NULL) {
+			fprintf(stderr, "cannot create the target directory");
+			exit(EXIT_FAILURE);
+		}
+		closedir(dp);
+	}
+#else
+	while ((c = getopt(argc, argv, "c:v")) == 'c' || c == 'v')
+		if (c == 'v')
+			vflag = 1;
+		else	cutarg = optarg;
+	if ((c != EOF && c != -1) ||
+		(optind == argc - 1 && strcmp(argv[optind], "=") == 0)) {
+			usage(progname, stderr, EXIT_FAILURE);
+	}
+#endif
+	if (vflag) {
+		if (cutarg != NULL) {
+			long	lo;
+			long	hi;
+			char	dummy;
+
+			if (sscanf(cutarg, "%ld%c", &hi, &dummy) == 1) {
+				cuthiyear = hi;
+			} else if (sscanf(cutarg, "%ld,%ld%c",
+				&lo, &hi, &dummy) == 2) {
+					cutloyear = lo;
+					cuthiyear = hi;
+			} else {
+(void) fprintf(stderr, _("%s: wild -c argument %s\n"),
+					progname, cutarg);
+				exit(EXIT_FAILURE);
+			}
+		}
+		setabsolutes();
+		cutlotime = yeartot(cutloyear);
+		cuthitime = yeartot(cuthiyear);
+	}
+
+#ifdef ICU
+	if (aflag) {
+		/* get all available zones */
+		char ** fakeargv;
+		int i;
+		int count;
+
+		count = getall(&namelist);
+
+		fakeargv = (char **) malloc((size_t) (argc + count) * sizeof *argv);
+		/*
+		if ((fakeargv = (char **) malloc((size_t) (argc + count) * sizeof *argv)) == NULL) {
+			exit(EXIT_FAILURE);
+		}
+		*/
+		for (i = 0; i < argc; i++) {
+			fakeargv[i] = argv[i];
+		}
+		for (i = 0; i < count; i++) {
+			fakeargv[i + argc] = namelist->name;
+			namelist = namelist->next;
+		}
+		argv = fakeargv;
+		argc += count;
+	}
+#endif
+	(void) time(&now);
+	longest = 0;
+	for (i = optind; i < argc; ++i)
+		if (strlen(argv[i]) > longest)
+			longest = strlen(argv[i]);
+	{
+		register int	from;
+		register int	to;
+
+		for (i = 0; environ[i] != NULL; ++i)
+			continue;
+		fakeenv = (char **) malloc((size_t) ((i + 2) *
+			sizeof *fakeenv));
+		if (fakeenv == NULL ||
+			(fakeenv[0] = (char *) malloc(longest + 4)) == NULL) {
+					(void) perror(progname);
+					exit(EXIT_FAILURE);
+		}
+		to = 0;
+		(void) strcpy(fakeenv[to++], "TZ=");
+		for (from = 0; environ[from] != NULL; ++from)
+			if (strncmp(environ[from], "TZ=", 3) != 0)
+				fakeenv[to++] = environ[from];
+		fakeenv[to] = NULL;
+		environ = fakeenv;
+	}
+	for (i = optind; i < argc; ++i) {
+		static char	buf[MAX_STRING_LENGTH];
+
+		(void) strcpy(&fakeenv[0][3], argv[i]);
+		if (!vflag) {
+			show(argv[i], now, FALSE);
+			continue;
+		}
+#ifdef ICU
+		fp = NULL;
+		if (iflag) {
+			if (dirarg == NULL) {
+				/* we want to display a zone name here */
+				if (i != optind) {
+					printf("\n");
+				}
+				printf("ZONE: %s\n", argv[i]);
+			} else {
+				int		zstart;
+				char	path[FILENAME_MAX + 1];
+				strcpy(path, dirarg);
+				strcat(path, "/");
+				zstart = strlen(path);
+				strcat(path, argv[i]);
+				/* replace '/' with '-' */
+				while(path[++zstart] != 0) {
+					if (path[zstart] == '/') {
+						path[zstart] = '-';
+					}
+				}
+				if ((fp = fopen(path, "w")) == NULL) {
+					fprintf(stderr, "cannot create output file %s\n", path);
+					exit(EXIT_FAILURE);
+				}
+			}
+		}
+#endif
+		warned = FALSE;
+		t = absolute_min_time;
+#ifdef ICU
+		/* skip displaying info for the lowest time, which is actually not
+		 * a transition when -i option is set */
+		if (!iflag) {
+#endif
+		show(argv[i], t, TRUE);
+		t += SECSPERHOUR * HOURSPERDAY;
+		show(argv[i], t, TRUE);
+#ifdef ICU
+		}
+#endif
+		if (t < cutlotime)
+			t = cutlotime;
+		tmp = my_localtime(&t);
+		if (tmp != NULL) {
+			tm = *tmp;
+			(void) strncpy(buf, abbr(&tm), (sizeof buf) - 1);
+		}
+		for ( ; ; ) {
+			if (t >= cuthitime || t >= cuthitime - SECSPERHOUR * 12)
+				break;
+			newt = t + SECSPERHOUR * 12;
+			newtmp = localtime(&newt);
+			if (newtmp != NULL)
+				newtm = *newtmp;
+#ifdef ICU
+			if (iflag) {
+				/* We  do not want to capture transitions just for
+				 * abbreviated zone name changes */
+				if ((tmp == NULL || newtmp == NULL) ? (tmp != newtmp) :
+					(delta(&newtm, &tm) != (newt - t) ||
+					newtm.tm_isdst != tm.tm_isdst)) {
+						newt = huntICU(argv[i], t, newt, fp);
+						newtmp = localtime(&newt);
+						if (newtmp != NULL) {
+							newtm = *newtmp;
+							(void) strncpy(buf,
+								abbr(&newtm),
+								(sizeof buf) - 1);
+						}
+				}
+			} else {
+#endif
+			if ((tmp == NULL || newtmp == NULL) ? (tmp != newtmp) :
+				(delta(&newtm, &tm) != (newt - t) ||
+				newtm.tm_isdst != tm.tm_isdst ||
+				strcmp(abbr(&newtm), buf) != 0)) {
+					newt = hunt(argv[i], t, newt);
+					newtmp = localtime(&newt);
+					if (newtmp != NULL) {
+						newtm = *newtmp;
+						(void) strncpy(buf,
+							abbr(&newtm),
+							(sizeof buf) - 1);
+					}
+			}
+#ifdef ICU
+			}
+#endif
+			t = newt;
+			tm = newtm;
+			tmp = newtmp;
+		}
+#ifdef ICU
+		if (!iflag) {
+		/* skip displaying info for the highest time, which is actually not
+		 * a transition when -i option is used*/
+#endif
+		t = absolute_max_time;
+		t -= SECSPERHOUR * HOURSPERDAY;
+		show(argv[i], t, TRUE);
+		t += SECSPERHOUR * HOURSPERDAY;
+		show(argv[i], t, TRUE);
+
+#ifdef ICU
+		}
+		/* close file */
+		if (fp != NULL) {
+			fclose(fp);
+		}
+#endif
+	}
+	if (fflush(stdout) || ferror(stdout)) {
+		(void) fprintf(stderr, "%s: ", progname);
+		(void) perror(_("Error writing to standard output"));
+		exit(EXIT_FAILURE);
+	}
+#ifdef ICU
+	if (aflag) {
+		struct listentry *	entry = namelist;
+		struct listentry *	next;
+		while (entry != NULL) {
+			free(entry->name);
+			next = entry->next;
+			free(entry);
+			entry = next;
+		}
+	}
+#endif
+	exit(EXIT_SUCCESS);
+	/* If exit fails to exit... */
+	return EXIT_FAILURE;
+}
+
+static void
+setabsolutes(void)
+{
+	if (0.5 == (time_t) 0.5) {
+		/*
+		** time_t is floating.
+		*/
+		if (sizeof (time_t) == sizeof (float)) {
+			absolute_min_time = (time_t) -FLT_MAX;
+			absolute_max_time = (time_t) FLT_MAX;
+		} else if (sizeof (time_t) == sizeof (double)) {
+			absolute_min_time = (time_t) -DBL_MAX;
+			absolute_max_time = (time_t) DBL_MAX;
+		} else {
+			(void) fprintf(stderr,
+_("%s: use of -v on system with floating time_t other than float or double\n"),
+				progname);
+			exit(EXIT_FAILURE);
+		}
+	} else if (0 > (time_t) -1) {
+		/*
+		** time_t is signed.  Assume overflow wraps around.
+		*/
+		time_t t = 0;
+		time_t t1 = 1;
+
+		while (t < t1) {
+			t = t1;
+			t1 = 2 * t1 + 1;
+		}
+
+		absolute_max_time = t;
+		t = -t;
+		absolute_min_time = t - 1;
+		if (t < absolute_min_time)
+			absolute_min_time = t;
+	} else {
+		/*
+		** time_t is unsigned.
+		*/
+		absolute_min_time = 0;
+		absolute_max_time = absolute_min_time - 1;
+	}
+}
+
+static time_t
+yeartot(y)
+const long	y;
+{
+	register long	myy;
+	register long	seconds;
+	register time_t	t;
+
+	myy = EPOCH_YEAR;
+	t = 0;
+	while (myy != y) {
+		if (myy < y) {
+			seconds = isleap(myy) ? SECSPERLYEAR : SECSPERNYEAR;
+			++myy;
+			if (t > absolute_max_time - seconds) {
+				t = absolute_max_time;
+				break;
+			}
+			t += seconds;
+		} else {
+			--myy;
+			seconds = isleap(myy) ? SECSPERLYEAR : SECSPERNYEAR;
+			if (t < absolute_min_time + seconds) {
+				t = absolute_min_time;
+				break;
+			}
+			t -= seconds;
+		}
+	}
+	return t;
+}
+
+static time_t
+hunt(char *name, time_t lot, time_t hit)
+{
+	time_t			t;
+	long			diff;
+	struct tm		lotm;
+	register struct tm *	lotmp;
+	struct tm		tm;
+	register struct tm *	tmp;
+	char			loab[MAX_STRING_LENGTH];
+
+	lotmp = my_localtime(&lot);
+	if (lotmp != NULL) {
+		lotm = *lotmp;
+		(void) strncpy(loab, abbr(&lotm), (sizeof loab) - 1);
+	}
+	for ( ; ; ) {
+		diff = (long) (hit - lot);
+		if (diff < 2)
+			break;
+		t = lot;
+		t += diff / 2;
+		if (t <= lot)
+			++t;
+		else if (t >= hit)
+			--t;
+		tmp = my_localtime(&t);
+		if (tmp != NULL)
+			tm = *tmp;
+		if ((lotmp == NULL || tmp == NULL) ? (lotmp == tmp) :
+			(delta(&tm, &lotm) == (t - lot) &&
+			tm.tm_isdst == lotm.tm_isdst &&
+			strcmp(abbr(&tm), loab) == 0)) {
+				lot = t;
+				lotm = tm;
+				lotmp = tmp;
+		} else	hit = t;
+	}
+	show(name, lot, TRUE);
+	show(name, hit, TRUE);
+	return hit;
+}
+
+/*
+** Thanks to Paul Eggert for logic used in delta.
+*/
+
+static long
+delta(newp, oldp)
+struct tm *	newp;
+struct tm *	oldp;
+{
+	register long	result;
+	register int	tmy;
+
+	if (newp->tm_year < oldp->tm_year)
+		return -delta(oldp, newp);
+	result = 0;
+	for (tmy = oldp->tm_year; tmy < newp->tm_year; ++tmy)
+		result += DAYSPERNYEAR + isleap_sum(tmy, TM_YEAR_BASE);
+	result += newp->tm_yday - oldp->tm_yday;
+	result *= HOURSPERDAY;
+	result += newp->tm_hour - oldp->tm_hour;
+	result *= MINSPERHOUR;
+	result += newp->tm_min - oldp->tm_min;
+	result *= SECSPERMIN;
+	result += newp->tm_sec - oldp->tm_sec;
+	return result;
+}
+
+static void
+show(char *zone, time_t t, int v)
+{
+	register struct tm *	tmp;
+
+	(void) printf("%-*s  ", (int) longest, zone);
+	if (v) {
+		tmp = gmtime(&t);
+		if (tmp == NULL) {
+			(void) printf(tformat(), t);
+		} else {
+			dumptime(tmp);
+			(void) printf(" UTC");
+		}
+		(void) printf(" = ");
+	}
+	tmp = my_localtime(&t);
+	dumptime(tmp);
+	if (tmp != NULL) {
+		if (*abbr(tmp) != '\0')
+			(void) printf(" %s", abbr(tmp));
+		if (v) {
+			(void) printf(" isdst=%d", tmp->tm_isdst);
+#ifdef TM_GMTOFF
+			(void) printf(" gmtoff=%ld", tmp->TM_GMTOFF);
+#endif /* defined TM_GMTOFF */
+		}
+	}
+	(void) printf("\n");
+	if (tmp != NULL && *abbr(tmp) != '\0')
+		abbrok(abbr(tmp), zone);
+}
+
+static char *
+abbr(tmp)
+struct tm *	tmp;
+{
+	register char *	result;
+	static char	nada;
+
+	if (tmp->tm_isdst != 0 && tmp->tm_isdst != 1)
+		return &nada;
+	result = tzname[tmp->tm_isdst];
+	return (result == NULL) ? &nada : result;
+}
+
+/*
+** The code below can fail on certain theoretical systems;
+** it works on all known real-world systems as of 2004-12-30.
+*/
+
+static const char *
+tformat(void)
+{
+	if (0.5 == (time_t) 0.5) {	/* floating */
+		if (sizeof (time_t) > sizeof (double))
+			return "%Lg";
+		return "%g";
+	}
+	if (0 > (time_t) -1) {		/* signed */
+		if (sizeof (time_t) > sizeof (long))
+			return "%lld";
+		if (sizeof (time_t) > sizeof (int))
+			return "%ld";
+		return "%d";
+	}
+	if (sizeof (time_t) > sizeof (unsigned long))
+		return "%llu";
+	if (sizeof (time_t) > sizeof (unsigned int))
+		return "%lu";
+	return "%u";
+}
+
+static void
+dumptime(timeptr)
+register const struct tm *	timeptr;
+{
+	static const char	wday_name[][3] = {
+		"Sun", "Mon", "Tue", "Wed", "Thu", "Fri", "Sat"
+	};
+	static const char	mon_name[][3] = {
+		"Jan", "Feb", "Mar", "Apr", "May", "Jun",
+		"Jul", "Aug", "Sep", "Oct", "Nov", "Dec"
+	};
+	register const char *	wn;
+	register const char *	mn;
+	register int		lead;
+	register int		trail;
+
+	if (timeptr == NULL) {
+		(void) printf("NULL");
+		return;
+	}
+	/*
+	** The packaged versions of localtime and gmtime never put out-of-range
+	** values in tm_wday or tm_mon, but since this code might be compiled
+	** with other (perhaps experimental) versions, paranoia is in order.
+	*/
+	if (timeptr->tm_wday < 0 || timeptr->tm_wday >=
+		(int) (sizeof wday_name / sizeof wday_name[0]))
+			wn = "???";
+	else		wn = wday_name[timeptr->tm_wday];
+	if (timeptr->tm_mon < 0 || timeptr->tm_mon >=
+		(int) (sizeof mon_name / sizeof mon_name[0]))
+			mn = "???";
+	else		mn = mon_name[timeptr->tm_mon];
+	(void) printf("%.3s %.3s%3d %.2d:%.2d:%.2d ",
+		wn, mn,
+		timeptr->tm_mday, timeptr->tm_hour,
+		timeptr->tm_min, timeptr->tm_sec);
+#define DIVISOR	10
+	trail = timeptr->tm_year % DIVISOR + TM_YEAR_BASE % DIVISOR;
+	lead = timeptr->tm_year / DIVISOR + TM_YEAR_BASE / DIVISOR +
+		trail / DIVISOR;
+	trail %= DIVISOR;
+	if (trail < 0 && lead > 0) {
+		trail += DIVISOR;
+		--lead;
+	} else if (lead < 0 && trail > 0) {
+		trail -= DIVISOR;
+		++lead;
+	}
+	if (lead == 0)
+		(void) printf("%d", trail);
+	else	(void) printf("%d%d", lead, ((trail < 0) ? -trail : trail));
+}
+
+#ifdef ICU
+static time_t
+huntICU(char *name, time_t lot, time_t hit, FILE * fp)
+{
+	time_t			t;
+	long			diff;
+	struct tm		lotm;
+	register struct tm *	lotmp;
+	struct tm		tm;
+	register struct tm *	tmp;
+	char			loab[MAX_STRING_LENGTH];
+
+	lotmp = my_localtime(&lot);
+	if (lotmp != NULL) {
+		lotm = *lotmp;
+		(void) strncpy(loab, abbr(&lotm), (sizeof loab) - 1);
+	}
+	for ( ; ; ) {
+		diff = (long) (hit - lot);
+		if (diff < 2)
+			break;
+		t = lot;
+		t += diff / 2;
+		if (t <= lot)
+			++t;
+		else if (t >= hit)
+			--t;
+		tmp = my_localtime(&t);
+		if (tmp != NULL)
+			tm = *tmp;
+		/* We  do not want to capture transitions just for
+		 * abbreviated zone name changes */
+		if ((lotmp == NULL || tmp == NULL) ? (lotmp == tmp) :
+			(delta(&tm, &lotm) == (t - lot) &&
+			tm.tm_isdst == lotm.tm_isdst)) {
+				lot = t;
+				lotm = tm;
+				lotmp = tmp;
+		} else	hit = t;
+	}
+	showICU(fp, name, lot, hit);
+	return hit;
+}
+
+static void showICU(FILE * fp, char *zone, time_t t1, time_t t2)
+{
+	if (fp == NULL) {
+		fp = stdout;
+	}
+	dumptimeICU(fp, t1);
+	fprintf(fp, " > ");
+	dumptimeICU(fp, t2);
+	fprintf(fp, "\n");
+}
+
+static void dumptimeICU(FILE * fp, time_t t)
+{
+	static const char	wday_name[][3] = {
+		"Sun", "Mon", "Tue", "Wed", "Thu", "Fri", "Sat"
+	};
+	struct tm gmt;
+	struct tm loc;
+	register int		lead;
+	register int		trail;
+	long	offset;
+	long	hour, min, sec;
+
+	loc = *my_localtime(&t);
+
+	trail = loc.tm_year % DIVISOR + TM_YEAR_BASE % DIVISOR;
+	lead = loc.tm_year / DIVISOR + TM_YEAR_BASE / DIVISOR + trail / DIVISOR;
+	trail %= DIVISOR;
+	if (trail < 0 && lead > 0) {
+		trail += DIVISOR;
+		--lead;
+	} else if (lead < 0 && trail > 0) {
+		trail -= DIVISOR;
+		++lead;
+	}
+
+	fprintf(fp, "%04d-%02d-%02d", lead * DIVISOR + trail, loc.tm_mon + 1, loc.tm_mday);
+	fprintf(fp, " %.3s ", wday_name[loc.tm_wday]);
+	fprintf(fp, "%02d:%02d:%02d", loc.tm_hour, loc.tm_min, loc.tm_sec);
+
+	gmt = *gmtime(&t);
+	offset = delta(&loc, &gmt);
+	if (offset < 0) {
+		offset = -offset;
+		fprintf(fp, "-");
+	} else {
+		fprintf(fp, "+");
+	}
+
+	sec = offset % 60;
+	offset = (offset - sec) / 60;
+	min = offset % 60;
+	hour = offset / 60;
+	
+	fprintf(fp, "%02d", hour);
+	fprintf(fp, "%02d", min);
+	fprintf(fp, "%02d", sec);
+	fprintf(fp, "[DST=%d]", loc.tm_isdst);
+}
+
+static int getall(struct listentry ** namelist) {
+	int count = 0;
+	struct listentry dummyentry;
+	struct listentry *	last = &dummyentry;
+
+	getzones(TZDIR, NULL, &last, &count);
+	if (count > 0) {
+		*namelist = dummyentry.next;
+	}
+
+	return count;
+}
+
+static void getzones(char * basedir, char * relpath, struct listentry ** last, int * count) {
+	char	path[FILENAME_MAX + 1];
+	struct	dirent *	dir;
+	DIR *	dp;
+
+	strcpy(path, basedir);
+	if (relpath != NULL) {
+		strcat(path, "/");
+		strcat(path, relpath);
+	}
+
+	if ((dp = opendir(path)) == NULL) {
+		/* file */
+		if (strstr(relpath, ".tab") == NULL) {
+			char *		pzonename;
+			listentry *	pentry;
+
+			if ((pzonename = malloc(strlen(relpath) + 1)) == NULL) {
+				exit(EXIT_FAILURE);
+			}
+			strcpy(pzonename, relpath);
+		
+			if ((pentry = malloc(sizeof(listentry))) == NULL) {
+				exit(EXIT_FAILURE);
+			}
+
+			pentry->name = pzonename;
+			pentry->next = NULL;
+			(*last)->next = pentry;
+			*last = pentry;
+			(*count)++;
+		}
+	} else {
+		/* directory */
+		while ((dir = readdir(dp)) != NULL) {
+			char	subpath[FILENAME_MAX + 1];
+
+			if (strcmp(dir->d_name, ".") == 0
+				|| strcmp(dir->d_name, "..") == 0) {
+				continue;
+			}
+			if (relpath != NULL) {
+				strcpy(subpath, relpath);
+				strcat(subpath, "/");
+				strcat(subpath, dir->d_name);
+			} else {
+				strcpy(subpath, dir->d_name);
+			}
+			getzones(basedir, subpath, last, count);
+		}
+		closedir(dp);
+	}
+}
+#endif
Property changes on: icu46/source/tools/tzcode/zdump.c
___________________________________________________________________
Added: svn:eol-style
   + LF