Update from tzcode2009i.

3 files changed, 52 insertions, 22 deletions

diff --git a/timezone/tzselect.ksh b/timezone/tzselect.ksh
index b99af82..57bf707 100644
--- a/timezone/tzselect.ksh
+++ b/timezone/tzselect.ksh
@@ -1,6 +1,6 @@
 #! @KSH@
 
-# '@(#)tzselect.ksh	8.1'
+VERSION='@(#)tzselect.ksh	8.2'
 
 # Ask the user about the time zone, and output the resulting TZ value to stdout.
 # Interact with the user via stderr and stdin.
@@ -45,6 +45,21 @@
 	exit 1
 }
 
+if [ "$1" = "--help" ]; then
+    cat <<EOF
+Usage: tzselect
+Select a time zone interactively.
+
+Report bugs to tz@elsie.nci.nih.gov.
+EOF
+    exit 0
+elif [ "$1" = "--version" ]; then
+    cat <<EOF
+tzselect $VERSION
+EOF
+    exit 0
+fi
+
 # Make sure the tables are readable.
 TZ_COUNTRY_TABLE=$TZDIR/iso3166.tab
 TZ_ZONE_TABLE=$TZDIR/zone.tab
diff --git a/timezone/zdump.c b/timezone/zdump.c
index 82c91e4..7122bbf 100644
--- a/timezone/zdump.c
+++ b/timezone/zdump.c
@@ -1,4 +1,9 @@
-static char	elsieid[] = "@(#)zdump.c	8.6";
+/*
+** This file is in the public domain, so clarified as of
+** 2009-05-17 by Arthur David Olson.
+*/
+
+static char	elsieid[] = "@(#)zdump.c	8.9";
 
 /*
 ** This code has been made independent of the rest of the time
@@ -230,6 +235,17 @@ const char * const	zone;
 	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;
@@ -266,6 +282,8 @@ char *	argv[];
 		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;
@@ -275,10 +293,7 @@ char *	argv[];
 		else	cutarg = optarg;
 	if ((c != EOF && c != -1) ||
 		(optind == argc - 1 && strcmp(argv[optind], "=") == 0)) {
-			(void) fprintf(stderr,
-_("%s: usage is %s [ --version ] [ -v ] [ -c [loyear,]hiyear ] zonename ...\n"),
-				progname, progname);
-			exit(EXIT_FAILURE);
+			usage(progname, stderr, EXIT_FAILURE);
 	}
 	if (vflag) {
 		if (cutarg != NULL) {
@@ -349,13 +364,9 @@ _("%s: usage is %s [ --version ] [ -v ] [ -c [loyear,]hiyear ] zonename ...\n"),
 			(void) strncpy(buf, abbr(&tm), (sizeof buf) - 1);
 		}
 		for ( ; ; ) {
-			if (t >= cuthitime)
+			if (t >= cuthitime || t >= cuthitime - SECSPERHOUR * 12)
 				break;
 			newt = t + SECSPERHOUR * 12;
-			if (newt >= cuthitime)
-				break;
-			if (newt <= t)
-				break;
 			newtmp = localtime(&newt);
 			if (newtmp != NULL)
 				newtm = *newtmp;
diff --git a/timezone/zic.c b/timezone/zic.c
index 5f8028e..01d9f13 100644
--- a/timezone/zic.c
+++ b/timezone/zic.c
@@ -3,7 +3,7 @@
 ** 2006-07-17 by Arthur David Olson.
 */
 
-static char	elsieid[] = "@(#)zic.c	8.17";
+static char	elsieid[] = "@(#)zic.c	8.19";
 
 #include "private.h"
 #include "locale.h"
@@ -156,7 +156,7 @@ static void 	stringzone(char * result,
 			const struct zone * zp, int ntzones);
 static void	setboundaries(void);
 static zic_t	tadd(zic_t t1, long t2);
-static void	usage(void);
+static void	usage(FILE *stream, int status);
 static void	writezone(const char * name, const char * string);
 static int	yearistype(int year, const char * type);
 
@@ -454,13 +454,15 @@ const char * const	string;
 }
 
 static void
-usage(void)
+usage(FILE *stream, int status)
 {
-	(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);
+	(void) fprintf(stream, _("%s: usage is %s \
+[ --version ] [ --help ] [ -v ] [ -l localtime ] [ -p posixrules ] \\\n\
+\t[ -d directory ] [ -L leapseconds ] [ -y yearistype ] [ filename ... ]\n\
+\n\
+Report bugs to tz@elsie.nci.nih.gov.\n"),
+		       progname, progname);
+	exit(status);
 }
 
 static const char *	psxrules;
@@ -498,11 +500,13 @@ char *	argv[];
 		if (strcmp(argv[i], "--version") == 0) {
 			(void) printf("%s\n", elsieid);
 			exit(EXIT_SUCCESS);
+		} else if (strcmp(argv[i], "--help") == 0) {
+			usage(stdout, EXIT_SUCCESS);
 		}
 	while ((c = getopt(argc, argv, "d:l:p:L:vsy:")) != EOF && c != -1)
 		switch (c) {
 			default:
-				usage();
+				usage(stderr, EXIT_FAILURE);
 			case 'd':
 				if (directory == NULL)
 					directory = optarg;
@@ -561,7 +565,7 @@ _("%s: More than one -L option specified\n"),
 				break;
 		}
 	if (optind == argc - 1 && strcmp(argv[optind], "=") == 0)
-		usage();	/* usage message by request */
+		usage(stderr, EXIT_FAILURE);	/* usage message by request */
 	if (directory == NULL)
 		directory = TZDIR;
 	if (yitcommand == NULL)
@@ -1991,7 +1995,7 @@ const int			zonecount;
 	min_year = max_year = EPOCH_YEAR;
 	if (leapseen) {
 		updateminmax(leapminyear);
-		updateminmax(leapmaxyear);
+		updateminmax(leapmaxyear + (leapmaxyear < INT_MAX));
 	}
 	for (i = 0; i < zonecount; ++i) {
 		zp = &zpfirst[i];