import FIREFOX_52_6_0esr_RELEASE from mozilla-esr52 hg repo

intl/icu/source/tools/tzcode/Makefile.in

@@ -0,0 +1,171 @@
+# Copyright (C) 2016 and later: Unicode, Inc. and others.
+# License & terms of use: http://www.unicode.org/copyright.html
+# Some Portions Copyright (c) 2006-2012 IBM and others. All Rights Reserved.
+
+srcdir = @srcdir@
+top_srcdir = @top_srcdir@
+
+top_builddir = ../..
+
+subdir = tools/tzcode
+
+include $(top_builddir)/icudefs.mk
+
+ifeq ($(TZDATA),)
+TZDATA = $(firstword $(wildcard ./tzdata*.tar.gz) $(wildcard $(srcdir)/tzdata*.tar.gz))
+endif
+ifeq ($(TZCODE),)
+TZCODE = $(firstword $(wildcard ./tzcode*.tar.gz) $(wildcard $(srcdir)/tzcode*.tar.gz))
+endif
+
+TZORIG=./tzorig
+TZORIG_TZDIR=./tzorig/tzdir
+TZORIG_ABS := $(shell pwd)/tzorig
+TZORIG_TZDIR_ABS := $(TZORIG_ABS)/tzdir
+TZORIG_OPTS := CFLAGS="-D_POSIX_C_SOURCE $(TZORIG_EXTRA_CFLAGS)" TZDIR=$(TZORIG_TZDIR_ABS)
+
+
+## Options for building zdumps
+ZDUMPOUT=$(shell pwd)/zdumpout
+ICUZDUMPOUT=$(shell pwd)/icuzdumpout
+
+ZDUMP_OPTS= -v -a -d $(ZDUMPOUT) -c 1902,2038 -i
+ICUZDUMP_OPTS= -a -d $(ICUZDUMPOUT)
+
+# Executables & objects
+OBJECTS= zic.o localtime.o asctime.o scheck.o ialloc.o
+ZICTARG=$(BINDIR)/zic$(EXEEXT)
+ZICEXEC=$(TOOLBINDIR)/zic$(TOOLEXEEXT)
+TZ2ICUTARG=$(BINDIR)/tz2icu$(EXEEXT)
+TZ2ICUEXEC=$(TOOLBINDIR)/tz2icu$(TOOLEXEEXT)
+ICUZDUMPTARG=$(BINDIR)/icuzdump$(EXEEXT)
+ICUZDUMPEXEC=$(TOOLBINDIR)/icuzdump$(TOOLEXEEXT)
+
+ifeq ($(TZDATA),)
+all: 
+	@echo ERROR "tzdata*.tar.gz" can\'t be found.
+	@false
+else
+all: icu_data
+endif
+
+TZCODE_TARGETS= tzorig check-dump
+
+ifeq ($(TZCODE),)
+# we're broken.
+$(TZCODE_TARGETS):
+	@echo ERROR "tzcode*.tar.gz" can\'t be found.
+	@false
+
+else
+ifeq ($(TZDATA),)
+# we're broken.
+$(TZCODE_TARGETS):
+	@echo ERROR "tzdata*.tar.gz" can\'t be found.
+	@false
+else
+tzorig:	$(TZCODE) $(TZDATA)
+	-$(RMV) ./tzorig/
+	mkdir $@
+	mkdir $(TZORIG_TZDIR)
+	gunzip -d < $(TZDATA) | ( cd $@ ; tar xf - )
+	gunzip -d < $(TZCODE) | ( cd $@ ; tar xf - )
+	-mv $(TZORIG)/zdump.c $(TZORIG)/zdump.c.orig
+	cp $(srcdir)/zdump.c $(TZORIG)/zdump.c
+	-mv $(TZORIG)/factory $(TZORIG)/factory.orig
+	cat $(TZORIG)/factory.orig $(srcdir)/icuzones > $(TZORIG)/factory
+	$(MAKE) -C $@ $(TZORIG_OPTS) zdump zones
+
+$(ZDUMPOUT): tzorig
+	( cd $(TZORIG) ; ./zdump$(EXEEXT) $(ZDUMP_OPTS) )
+
+
+dump-out: $(ZDUMPOUT) $(ICUZDUMPOUT)
+
+check-dump: dump-out
+	diff -r zdumpout icuzdumpout
+
+endif
+endif
+
+$(ICUZDUMPOUT): $(ICUZDUMPEXEC)
+	-$(RMV) $(ICUZDUMPOUT)
+	-mkdir $(ICUZDUMPOUT)
+	$(INVOKE) $(ICUZDUMPEXEC) $(ICUZDUMP_OPTS)
+
+
+#
+# old 'tz' rules start here
+#
+
+
+PRIMARY_YDATA=	africa antarctica asia australasia \
+		europe northamerica southamerica
+YDATA=		$(PRIMARY_YDATA) pacificnew etcetera factory backward
+NDATA=		systemv
+SDATA=		solar87 solar88 solar89
+#TDATA=		$(YDATA) $(NDATA) $(SDATA)
+TDATA=		$(YDATA) $(NDATA)
+YEARISTYPE=     ./yearistype
+
+TZDIR=zoneinfo
+
+CFLAGS+=-D_POSIX_C_SOURCE
+CPPFLAGS+= -DTZDIR=\"$(TZDIR)\" 
+
+# more data
+XDATA=zone.tab yearistype.sh leapseconds iso3166.tab
+ICUDATA=ZoneMetaData.java icu_zone.txt tz2icu zoneinfo64.txt zoneinfo.txt
+
+$(ZICTARG):		$(OBJECTS) $(TDATA) yearistype $(srcdir)/tz2icu.h
+		$(CC) $(CFLAGS) $(TZORIG_EXTRA_CFLAGS) $(LFLAGS) -I$(srcdir) $(OBJECTS) $(LDLIBS) -o $@
+
+$(TZ2ICUTARG):	$(srcdir)/tz2icu.cpp $(srcdir)/tz2icu.h
+		$(CXX) -W -Wall  -I$(srcdir) -I$(top_srcdir)/common -pedantic $(srcdir)/tz2icu.cpp -o $@
+
+$(ICUZDUMPTARG):	$(srcdir)/icuzdump.cpp
+		$(LINK.cc)  -I$(srcdir) -I$(top_srcdir)/common -I$(top_srcdir)/i18n -I$(top_srcdir)/tools/toolutil -I$(top_srcdir)/io  -pedantic $(srcdir)/icuzdump.cpp $(LIBICUUC) $(LIBICUDT) $(LIBICUI18N) $(LIBICUIO) $(LIBICUTOOLUTIL) -o $@
+
+
+$(TDATA): tdatamarker
+
+tdatamarker: $(TZDATA)
+	gunzip -d < $(TZDATA) | tar xf - --exclude=Makefile
+	touch $@
+
+yearistype:	yearistype.sh
+		cp yearistype.sh yearistype
+		chmod +x yearistype
+
+posix_only:	$(ZICEXEC) $(TDATA) $(srcdir)/icuzones
+		$(ZICEXEC) -y $(YEARISTYPE) -d $(TZDIR) -L /dev/null $(TDATA) $(srcdir)/icuzones
+
+
+icu_data:	$(TZ2ICUEXEC) posix_only
+		$(TZ2ICUEXEC) $(TZDIR) zone.tab `echo $(TZDATA) | sed -e "s/.*\/tzdata//;s/\.tar\.gz$$//"`
+		$(TZ2ICUEXEC) $(TZDIR) zone.tab `echo $(TZDATA) | sed -e "s/.*\/tzdata//;s/\.tar\.gz$$//"` --old
+
+clean:
+		-rm -f core *.o *.out zdump${EXEEXT} $(ZICTARG) yearistype date $(TZ2ICUTARG)
+		@echo ICU specific cleanup:
+		-rm -f $(ICUDATA)
+		-rm -rf $(TZDIR)
+		-$(RMV) $(ICUZDUMPTARG) tzorig ./zdumpout/ ./icuzdumpout/
+ifneq ($(TZDATA),)
+		-rm -rf `gunzip -d < $(TZDATA) | tar tf - --exclude=Makefile | grep -o '[^ ]*$$' | tr '\n' ' '`
+		-rm tdatamarker
+endif
+
+checkclean:
+
+dataclean: clean
+	-rm -f $(TDATA) $(XDATA)
+
+distclean:	dataclean clean
+	-rm -f Makefile
+
+Makefile: $(srcdir)/Makefile.in  $(top_builddir)/config.status
+	cd $(top_builddir) \
+	&& CONFIG_FILES=$(subdir)/$@ CONFIG_HEADERS= $(SHELL) ./config.status
+
+

intl/icu/source/tools/tzcode/asctime.c

@@ -0,0 +1,132 @@
+/*
+** This file is in the public domain, so clarified as of
+** 1996-06-05 by Arthur David Olson.
+*/
+
+/*
+** Avoid the temptation to punt entirely to strftime;
+** the output of strftime is supposed to be locale specific
+** whereas the output of asctime is supposed to be constant.
+*/
+
+/*LINTLIBRARY*/
+
+#include "private.h"
+#include "tzfile.h"
+
+/*
+** Some systems only handle "%.2d"; others only handle "%02d";
+** "%02.2d" makes (most) everybody happy.
+** At least some versions of gcc warn about the %02.2d;
+** we conditionalize below to avoid the warning.
+*/
+/*
+** All years associated with 32-bit time_t values are exactly four digits long;
+** some years associated with 64-bit time_t values are not.
+** Vintage programs are coded for years that are always four digits long
+** and may assume that the newline always lands in the same place.
+** For years that are less than four digits, we pad the output with
+** leading zeroes to get the newline in the traditional place.
+** The -4 ensures that we get four characters of output even if
+** we call a strftime variant that produces fewer characters for some years.
+** The ISO C 1999 and POSIX 1003.1-2004 standards prohibit padding the year,
+** but many implementations pad anyway; most likely the standards are buggy.
+*/
+#ifdef __GNUC__
+#define ASCTIME_FMT	"%.3s %.3s%3d %2.2d:%2.2d:%2.2d %-4s\n"
+#else /* !defined __GNUC__ */
+#define ASCTIME_FMT	"%.3s %.3s%3d %02.2d:%02.2d:%02.2d %-4s\n"
+#endif /* !defined __GNUC__ */
+/*
+** For years that are more than four digits we put extra spaces before the year
+** so that code trying to overwrite the newline won't end up overwriting
+** a digit within a year and truncating the year (operating on the assumption
+** that no output is better than wrong output).
+*/
+#ifdef __GNUC__
+#define ASCTIME_FMT_B	"%.3s %.3s%3d %2.2d:%2.2d:%2.2d     %s\n"
+#else /* !defined __GNUC__ */
+#define ASCTIME_FMT_B	"%.3s %.3s%3d %02.2d:%02.2d:%02.2d     %s\n"
+#endif /* !defined __GNUC__ */
+
+#define STD_ASCTIME_BUF_SIZE	26
+/*
+** Big enough for something such as
+** ??? ???-2147483648 -2147483648:-2147483648:-2147483648     -2147483648\n
+** (two three-character abbreviations, five strings denoting integers,
+** seven explicit spaces, two explicit colons, a newline,
+** and a trailing ASCII nul).
+** The values above are for systems where an int is 32 bits and are provided
+** as an example; the define below calculates the maximum for the system at
+** hand.
+*/
+#define MAX_ASCTIME_BUF_SIZE	(2*3+5*INT_STRLEN_MAXIMUM(int)+7+2+1+1)
+
+static char	buf_asctime[MAX_ASCTIME_BUF_SIZE];
+
+/*
+** A la ISO/IEC 9945-1, ANSI/IEEE Std 1003.1, 2004 Edition.
+*/
+
+char *
+asctime_r(register const struct tm *timeptr, char *buf)
+{
+	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;
+	char			year[INT_STRLEN_MAXIMUM(int) + 2];
+	char			result[MAX_ASCTIME_BUF_SIZE];
+
+	if (timeptr == NULL) {
+		errno = EINVAL;
+		return strcpy(buf, "??? ??? ?? ??:??:?? ????\n");
+	}
+	if (timeptr->tm_wday < 0 || timeptr->tm_wday >= DAYSPERWEEK)
+		wn = "???";
+	else	wn = wday_name[timeptr->tm_wday];
+	if (timeptr->tm_mon < 0 || timeptr->tm_mon >= MONSPERYEAR)
+		mn = "???";
+	else	mn = mon_name[timeptr->tm_mon];
+	/*
+	** Use strftime's %Y to generate the year, to avoid overflow problems
+	** when computing timeptr->tm_year + TM_YEAR_BASE.
+	** Assume that strftime is unaffected by other out-of-range members
+	** (e.g., timeptr->tm_mday) when processing "%Y".
+	*/
+	(void) strftime(year, sizeof year, "%Y", timeptr);
+	/*
+	** We avoid using snprintf since it's not available on all systems.
+	*/
+	(void) sprintf(result,
+		((strlen(year) <= 4) ? ASCTIME_FMT : ASCTIME_FMT_B),
+		wn, mn,
+		timeptr->tm_mday, timeptr->tm_hour,
+		timeptr->tm_min, timeptr->tm_sec,
+		year);
+	if (strlen(result) < STD_ASCTIME_BUF_SIZE || buf == buf_asctime)
+		return strcpy(buf, result);
+	else {
+#ifdef EOVERFLOW
+		errno = EOVERFLOW;
+#else /* !defined EOVERFLOW */
+		errno = EINVAL;
+#endif /* !defined EOVERFLOW */
+		return NULL;
+	}
+}
+
+/*
+** A la ISO/IEC 9945-1, ANSI/IEEE Std 1003.1, 2004 Edition.
+*/
+
+char *
+asctime(register const struct tm *timeptr)
+{
+	return asctime_r(timeptr, buf_asctime);
+}

intl/icu/source/tools/tzcode/ialloc.c

@@ -0,0 +1,32 @@
+/*
+** This file is in the public domain, so clarified as of
+** 2006-07-17 by Arthur David Olson.
+*/
+
+/*LINTLIBRARY*/
+
+#include "private.h"
+
+char *
+icatalloc(char *const old, const char *const new)
+{
+	register char *	result;
+	register int	oldsize, newsize;
+
+	newsize = (new == NULL) ? 0 : strlen(new);
+	if (old == NULL)
+		oldsize = 0;
+	else if (newsize == 0)
+		return old;
+	else	oldsize = strlen(old);
+	if ((result = realloc(old, oldsize + newsize + 1)) != NULL)
+		if (new != NULL)
+			(void) strcpy(result + oldsize, new);
+	return result;
+}
+
+char *
+icpyalloc(const char *const string)
+{
+	return icatalloc(NULL, string);
+}

intl/icu/source/tools/tzcode/icuregions

@@ -0,0 +1,15 @@
+# Copyright (C) 2016 and later: Unicode, Inc. and others.
+# License & terms of use: http://www.unicode.org/copyright.html
+######################################################################
+# Copyright (C) 2013-2014, International Business Machines
+# Corporation and others.  All Rights Reserved.
+######################################################################
+# This is an ICU-specific file including zone/region mapping.
+#
+# Each line below indicates zone and its region in the syntax below -
+# <zone_id> <region_code>
+#
+Africa/Asmera ER
+America/Montreal CA
+Europe/Simferopol UA
+

intl/icu/source/tools/tzcode/icuzdump.cpp

@@ -0,0 +1,423 @@
+// Copyright (C) 2016 and later: Unicode, Inc. and others.
+// License & terms of use: http://www.unicode.org/copyright.html
+/*
+*******************************************************************************
+*
+*   Copyright (C) 2007-2016, International Business Machines
+*   Corporation and others.  All Rights Reserved.
+*
+*******************************************************************************
+*   file name:  icuzdump.cpp
+*   encoding:   US-ASCII
+*   tab size:   8 (not used)
+*   indentation:4
+*
+*   created on: 2007-04-02
+*   created by: Yoshito Umaoka
+*
+*   This tool write out timezone transitions for ICU timezone.  This tool
+*   is used as a part of tzdata update process to check if ICU timezone
+*   code works as well as the corresponding Olson stock localtime/zdump.
+*/
+
+#include <cstdlib>
+#include <cstring>
+#include <fstream>
+#include <sstream>
+#include <iostream>
+
+#include "unicode/utypes.h"
+#include "unicode/ustring.h"
+#include "unicode/timezone.h"
+#include "unicode/simpletz.h"
+#include "unicode/smpdtfmt.h"
+#include "unicode/decimfmt.h"
+#include "unicode/gregocal.h"
+#include "unicode/ustream.h"
+#include "unicode/putil.h"
+
+#include "cmemory.h"
+#include "uoptions.h"
+
+using namespace std;
+
+class DumpFormatter {
+public:
+    DumpFormatter() {
+        UErrorCode status = U_ZERO_ERROR;
+        stz = new SimpleTimeZone(0, "");
+        sdf = new SimpleDateFormat((UnicodeString)"yyyy-MM-dd EEE HH:mm:ss", Locale::getEnglish(), status);
+        DecimalFormatSymbols *symbols = new DecimalFormatSymbols(Locale::getEnglish(), status);
+        decf = new DecimalFormat("00", symbols, status);
+    }
+    ~DumpFormatter() {
+    }
+
+    UnicodeString& format(UDate time, int32_t offset, UBool isDst, UnicodeString& appendTo) {
+        stz->setRawOffset(offset);
+        sdf->setTimeZone(*stz);
+        UnicodeString str = sdf->format(time, appendTo);
+        if (offset < 0) {
+            appendTo += "-";
+            offset = -offset;
+        } else {
+            appendTo += "+";
+        }
+
+        int32_t hour, min, sec;
+
+        offset /= 1000;
+        sec = offset % 60;
+        offset = (offset - sec) / 60;
+        min = offset % 60;
+        hour = offset / 60;
+
+        decf->format(hour, appendTo);
+        decf->format(min, appendTo);
+        decf->format(sec, appendTo);
+        appendTo += "[DST=";
+        if (isDst) {
+            appendTo += "1";
+        } else {
+            appendTo += "0";
+        }
+        appendTo += "]";
+        return appendTo;
+    }
+private:
+    SimpleTimeZone*     stz;
+    SimpleDateFormat*   sdf;
+    DecimalFormat*      decf;
+};
+
+class ICUZDump {
+public:
+    ICUZDump() {
+        formatter = new DumpFormatter();
+        loyear = 1902;
+        hiyear = 2050;
+        tick = 1000;
+        linesep = NULL;
+    }
+
+    ~ICUZDump() {
+    }
+
+    void setLowYear(int32_t lo) {
+        loyear = lo;
+    }
+
+    void setHighYear(int32_t hi) {
+        hiyear = hi;
+    }
+
+    void setTick(int32_t t) {
+        tick = t;
+    }
+
+    void setTimeZone(TimeZone* tz) {
+        timezone = tz;
+    }
+
+    void setDumpFormatter(DumpFormatter* fmt) {
+        formatter = fmt;
+    }
+
+    void setLineSeparator(const char* sep) {
+        linesep = sep;
+    }
+
+    void dump(ostream& out) {
+        UErrorCode status = U_ZERO_ERROR;
+        UDate SEARCH_INCREMENT = 12 * 60 * 60 * 1000; // half day
+        UDate t, cutlo, cuthi;
+        int32_t rawOffset, dstOffset;
+        UnicodeString str;
+
+        getCutOverTimes(cutlo, cuthi);
+        t = cutlo;
+        timezone->getOffset(t, FALSE, rawOffset, dstOffset, status);
+        while (t < cuthi) {
+            int32_t newRawOffset, newDstOffset;
+            UDate newt = t + SEARCH_INCREMENT;
+
+            timezone->getOffset(newt, FALSE, newRawOffset, newDstOffset, status);
+
+            UBool bSameOffset = (rawOffset + dstOffset) == (newRawOffset + newDstOffset);
+            UBool bSameDst = ((dstOffset != 0) && (newDstOffset != 0)) || ((dstOffset == 0) && (newDstOffset == 0));
+
+            if (!bSameOffset || !bSameDst) {
+                // find the boundary
+                UDate lot = t;
+                UDate hit = newt;
+                while (true) {
+                    int32_t diff = (int32_t)(hit - lot);
+                    if (diff <= tick) {
+                        break;
+                    }
+                    UDate medt = lot + ((diff / 2) / tick) * tick;
+                    int32_t medRawOffset, medDstOffset;
+                    timezone->getOffset(medt, FALSE, medRawOffset, medDstOffset, status);
+
+                    bSameOffset = (rawOffset + dstOffset) == (medRawOffset + medDstOffset);
+                    bSameDst = ((dstOffset != 0) && (medDstOffset != 0)) || ((dstOffset == 0) && (medDstOffset == 0));
+
+                    if (!bSameOffset || !bSameDst) {
+                        hit = medt;
+                    } else {
+                        lot = medt;
+                    }
+                }
+                // write out the boundary
+                str.remove();
+                formatter->format(lot, rawOffset + dstOffset, (dstOffset == 0 ? FALSE : TRUE), str);
+                out << str << " > ";
+                str.remove();
+                formatter->format(hit, newRawOffset + newDstOffset, (newDstOffset == 0 ? FALSE : TRUE), str);
+                out << str;
+                if (linesep != NULL) {
+                    out << linesep;
+                } else {
+                    out << endl;
+                }
+
+                rawOffset = newRawOffset;
+                dstOffset = newDstOffset;
+            }
+            t = newt;
+        }
+    }
+
+private:
+    void getCutOverTimes(UDate& lo, UDate& hi) {
+        UErrorCode status = U_ZERO_ERROR;
+        GregorianCalendar* gcal = new GregorianCalendar(timezone, Locale::getEnglish(), status);
+        gcal->clear();
+        gcal->set(loyear, 0, 1, 0, 0, 0);
+        lo = gcal->getTime(status);
+        gcal->set(hiyear, 0, 1, 0, 0, 0);
+        hi = gcal->getTime(status);
+    }
+
+    TimeZone*   timezone;
+    int32_t     loyear;
+    int32_t     hiyear;
+    int32_t     tick;
+
+    DumpFormatter*  formatter;
+    const char*  linesep;
+};
+
+class ZoneIterator {
+public:
+    ZoneIterator(UBool bAll = FALSE) {
+        if (bAll) {
+            zenum = TimeZone::createEnumeration();
+        }
+        else {
+            zenum = NULL;
+            zids = NULL;
+            idx = 0;
+            numids = 1;
+        }
+    }
+
+    ZoneIterator(const char** ids, int32_t num) {
+        zenum = NULL;
+        zids = ids;
+        idx = 0;
+        numids = num;
+    }
+
+    ~ZoneIterator() {
+        if (zenum != NULL) {
+            delete zenum;
+        }
+    }
+
+    TimeZone* next() {
+        TimeZone* tz = NULL;
+        if (zenum != NULL) {
+            UErrorCode status = U_ZERO_ERROR;
+            const UnicodeString* zid = zenum->snext(status);
+            if (zid != NULL) {
+                tz = TimeZone::createTimeZone(*zid);
+            }
+        }
+        else {
+            if (idx < numids) {
+                if (zids != NULL) {
+                    tz = TimeZone::createTimeZone((const UnicodeString&)zids[idx]);
+                }
+                else {
+                    tz = TimeZone::createDefault();
+                }
+                idx++;
+            }
+        }
+        return tz;
+    }
+
+private:
+    const char** zids;
+    StringEnumeration* zenum;
+    int32_t idx;
+    int32_t numids;
+};
+
+enum { 
+  kOptHelpH = 0,
+  kOptHelpQuestionMark,
+  kOptAllZones,
+  kOptCutover,
+  kOptDestDir,
+  kOptLineSep
+};
+
+static UOption options[]={
+    UOPTION_HELP_H,
+    UOPTION_HELP_QUESTION_MARK,
+    UOPTION_DEF("allzones", 'a', UOPT_NO_ARG),
+    UOPTION_DEF("cutover", 'c', UOPT_REQUIRES_ARG),
+    UOPTION_DEF("destdir", 'd', UOPT_REQUIRES_ARG),
+    UOPTION_DEF("linesep", 'l', UOPT_REQUIRES_ARG)
+};
+
+extern int
+main(int argc, char *argv[]) {
+    int32_t low = 1902;
+    int32_t high = 2038;
+    UBool bAll = FALSE;
+    const char *dir = NULL;
+    const char *linesep = NULL;
+
+    U_MAIN_INIT_ARGS(argc, argv);
+    argc = u_parseArgs(argc, argv, UPRV_LENGTHOF(options), options);
+
+    if (argc < 0) {
+        cerr << "Illegal command line argument(s)" << endl << endl;
+    }
+
+    if (argc < 0 || options[kOptHelpH].doesOccur || options[kOptHelpQuestionMark].doesOccur) {
+        cerr
+            << "Usage: icuzdump [-options] [zoneid1 zoneid2 ...]" << endl
+            << endl
+            << "\tDump all offset transitions for the specified zones." << endl
+            << endl
+            << "Options:" << endl
+            << "\t-a       : Dump all available zones." << endl
+            << "\t-d <dir> : When specified, write transitions in a file under" << endl
+            << "\t           the directory for each zone." << endl
+            << "\t-l <sep> : New line code type used in file outputs. CR or LF (default)"
+            << "\t           or CRLF." << endl
+            << "\t-c [<low_year>,]<high_year>" << endl
+            << "\t         : When specified, dump transitions starting <low_year>" << endl
+            << "\t           (inclusive) up to <high_year> (exclusive).  The default" << endl
+            << "\t           values are 1902(low) and 2038(high)." << endl;
+        return argc < 0 ? U_ILLEGAL_ARGUMENT_ERROR : U_ZERO_ERROR;
+    }
+
+    bAll = options[kOptAllZones].doesOccur;
+
+    if (options[kOptDestDir].doesOccur) {
+        dir = options[kOptDestDir].value;
+    }
+
+    if (options[kOptLineSep].doesOccur) {
+        if (strcmp(options[kOptLineSep].value, "CR") == 0) {
+            linesep = "\r";
+        } else if (strcmp(options[kOptLineSep].value, "CRLF") == 0) {
+            linesep = "\r\n";
+        } else if (strcmp(options[kOptLineSep].value, "LF") == 0) {
+            linesep = "\n";
+        }
+    }
+
+    if (options[kOptCutover].doesOccur) {
+        char* comma = (char*)strchr(options[kOptCutover].value, ',');
+        if (comma == NULL) {
+            high = atoi(options[kOptCutover].value);
+        } else {
+            *comma = 0;
+            low = atoi(options[kOptCutover].value);
+            high = atoi(comma + 1);
+        }
+    }
+
+    ICUZDump dumper;
+    dumper.setLowYear(low);
+    dumper.setHighYear(high);
+    if (dir != NULL && linesep != NULL) {
+        // use the specified line separator only for file output
+        dumper.setLineSeparator((const char*)linesep);
+    }
+
+    ZoneIterator* zit;
+    if (bAll) {
+        zit = new ZoneIterator(TRUE);
+    } else {
+        if (argc <= 1) {
+            zit = new ZoneIterator();
+        } else {
+            zit = new ZoneIterator((const char**)&argv[1], argc - 1);
+        }
+    }
+
+    UnicodeString id;
+    if (dir != NULL) {
+        // file output
+        ostringstream path;
+        ios::openmode mode = ios::out;
+        if (linesep != NULL) {
+            mode |= ios::binary;
+        }
+        for (;;) {
+            TimeZone* tz = zit->next();
+            if (tz == NULL) {
+                break;
+            }
+            dumper.setTimeZone(tz);
+            tz->getID(id);
+
+            // target file path
+            path.str("");
+            path << dir << U_FILE_SEP_CHAR;
+            id = id.findAndReplace("/", "-");
+            path << id;
+
+            ofstream* fout = new ofstream(path.str().c_str(), mode);
+            if (fout->fail()) {
+                cerr << "Cannot open file " << path.str() << endl;
+                delete fout;
+                delete tz;
+                break;
+            }
+
+            dumper.dump(*fout);
+            fout->close();
+            delete fout;
+            delete tz;
+        }
+
+    } else {
+        // stdout
+        UBool bFirst = TRUE;
+        for (;;) {
+            TimeZone* tz = zit->next();
+            if (tz == NULL) {
+                break;
+            }
+            dumper.setTimeZone(tz);
+            tz->getID(id);
+            if (bFirst) {
+                bFirst = FALSE;
+            } else {
+                cout << endl;
+            }
+            cout << "ZONE: " << id << endl;
+            dumper.dump(cout);
+            delete tz;
+        }
+    }
+    delete zit;
+}

intl/icu/source/tools/tzcode/icuzdump.vcxproj

@@ -0,0 +1,111 @@
+<?xml version="1.0" encoding="utf-8"?>
+<Project DefaultTargets="Build" ToolsVersion="4.0" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+  <ItemGroup Label="ProjectConfigurations">
+    <ProjectConfiguration Include="Debug|Win32">
+      <Configuration>Debug</Configuration>
+      <Platform>Win32</Platform>
+    </ProjectConfiguration>
+    <ProjectConfiguration Include="Release|Win32">
+      <Configuration>Release</Configuration>
+      <Platform>Win32</Platform>
+    </ProjectConfiguration>
+  </ItemGroup>
+  <PropertyGroup Label="Globals">
+    <ProjectGuid>{655F4481-B461-4DF0-AF10-0D01114A26C1}</ProjectGuid>
+    <RootNamespace>icuzdump</RootNamespace>
+    <Keyword>Win32Proj</Keyword>
+  </PropertyGroup>
+  <Import Project="$(VCTargetsPath)\Microsoft.Cpp.Default.props" />
+  <PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Release|Win32'" Label="Configuration">
+    <ConfigurationType>Application</ConfigurationType>
+    <CharacterSet>Unicode</CharacterSet>
+    <WholeProgramOptimization>true</WholeProgramOptimization>
+  </PropertyGroup>
+  <PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Debug|Win32'" Label="Configuration">
+    <ConfigurationType>Application</ConfigurationType>
+    <CharacterSet>Unicode</CharacterSet>
+  </PropertyGroup>
+  <Import Project="$(VCTargetsPath)\Microsoft.Cpp.props" />
+  <ImportGroup Label="ExtensionSettings">
+  </ImportGroup>
+  <ImportGroup Condition="'$(Configuration)|$(Platform)'=='Release|Win32'" Label="PropertySheets">
+    <Import Project="$(UserRootDir)\Microsoft.Cpp.$(Platform).user.props" Condition="exists('$(UserRootDir)\Microsoft.Cpp.$(Platform).user.props')" Label="LocalAppDataPlatform" />
+  </ImportGroup>
+  <ImportGroup Condition="'$(Configuration)|$(Platform)'=='Debug|Win32'" Label="PropertySheets">
+    <Import Project="$(UserRootDir)\Microsoft.Cpp.$(Platform).user.props" Condition="exists('$(UserRootDir)\Microsoft.Cpp.$(Platform).user.props')" Label="LocalAppDataPlatform" />
+  </ImportGroup>
+  <PropertyGroup Label="UserMacros" />
+  <PropertyGroup>
+    <_ProjectFileVersion>10.0.40219.1</_ProjectFileVersion>
+    <OutDir Condition="'$(Configuration)|$(Platform)'=='Debug|Win32'">.\x86\Debug\</OutDir>
+    <IntDir Condition="'$(Configuration)|$(Platform)'=='Debug|Win32'">.\x86\Debug\</IntDir>
+    <LinkIncremental Condition="'$(Configuration)|$(Platform)'=='Debug|Win32'">true</LinkIncremental>
+    <OutDir Condition="'$(Configuration)|$(Platform)'=='Release|Win32'">$(SolutionDir)$(Configuration)\</OutDir>
+    <IntDir Condition="'$(Configuration)|$(Platform)'=='Release|Win32'">$(Configuration)\</IntDir>
+    <LinkIncremental Condition="'$(Configuration)|$(Platform)'=='Release|Win32'">false</LinkIncremental>
+  </PropertyGroup>
+  <ItemDefinitionGroup Condition="'$(Configuration)|$(Platform)'=='Debug|Win32'">
+    <CustomBuildStep>
+      <Command>copy "$(TargetPath)" ..\..\..\bin
+</Command>
+      <Outputs>..\..\..\bin\$(TargetFileName);%(Outputs)</Outputs>
+    </CustomBuildStep>
+    <ClCompile>
+      <Optimization>Disabled</Optimization>
+      <AdditionalIncludeDirectories>..\..\..\include;..\toolutil;..\..\common;%(AdditionalIncludeDirectories)</AdditionalIncludeDirectories>
+      <PreprocessorDefinitions>WIN32;_DEBUG;_CRT_SECURE_NO_DEPRECATE;%(PreprocessorDefinitions)</PreprocessorDefinitions>
+      <MinimalRebuild>false</MinimalRebuild>
+      <BasicRuntimeChecks>EnableFastChecks</BasicRuntimeChecks>
+      <RuntimeLibrary>MultiThreadedDebugDLL</RuntimeLibrary>
+      <DisableLanguageExtensions>true</DisableLanguageExtensions>
+      <PrecompiledHeader>
+      </PrecompiledHeader>
+      <PrecompiledHeaderOutputFile>.\x86\Debug/icuzdump.pch</PrecompiledHeaderOutputFile>
+      <AssemblerListingLocation>.\x86\Debug/</AssemblerListingLocation>
+      <ObjectFileName>.\x86\Debug/</ObjectFileName>
+      <ProgramDataBaseFileName>.\x86\Debug/</ProgramDataBaseFileName>
+      <BrowseInformation>true</BrowseInformation>
+      <WarningLevel>Level3</WarningLevel>
+      <DebugInformationFormat>EditAndContinue</DebugInformationFormat>
+      <CompileAs>Default</CompileAs>
+    </ClCompile>
+    <Link>
+      <AdditionalDependencies>icuucd.lib;icuind.lib;icutud.lib;icuiod.lib;%(AdditionalDependencies)</AdditionalDependencies>
+      <OutputFile>.\x86\Debug/icuzdump.exe</OutputFile>
+      <AdditionalLibraryDirectories>..\..\..\lib;%(AdditionalLibraryDirectories)</AdditionalLibraryDirectories>
+      <GenerateDebugInformation>true</GenerateDebugInformation>
+      <ProgramDatabaseFile>.\x86\Debug/icuzdump.pdb</ProgramDatabaseFile>
+      <SubSystem>Console</SubSystem>
+      <RandomizedBaseAddress>false</RandomizedBaseAddress>
+      <DataExecutionPrevention>
+      </DataExecutionPrevention>
+      <TargetMachine>NotSet</TargetMachine>
+    </Link>
+  </ItemDefinitionGroup>
+  <ItemDefinitionGroup Condition="'$(Configuration)|$(Platform)'=='Release|Win32'">
+    <ClCompile>
+      <PreprocessorDefinitions>WIN32;NDEBUG;_CONSOLE;%(PreprocessorDefinitions)</PreprocessorDefinitions>
+      <RuntimeLibrary>MultiThreadedDLL</RuntimeLibrary>
+      <PrecompiledHeader>
+      </PrecompiledHeader>
+      <WarningLevel>Level3</WarningLevel>
+      <DebugInformationFormat>ProgramDatabase</DebugInformationFormat>
+    </ClCompile>
+    <Link>
+      <GenerateDebugInformation>true</GenerateDebugInformation>
+      <SubSystem>Console</SubSystem>
+      <OptimizeReferences>true</OptimizeReferences>
+      <EnableCOMDATFolding>true</EnableCOMDATFolding>
+      <RandomizedBaseAddress>false</RandomizedBaseAddress>
+      <DataExecutionPrevention>
+      </DataExecutionPrevention>
+      <TargetMachine>MachineX86</TargetMachine>
+    </Link>
+  </ItemDefinitionGroup>
+  <ItemGroup>
+    <ClCompile Include="icuzdump.cpp" />
+  </ItemGroup>
+  <Import Project="$(VCTargetsPath)\Microsoft.Cpp.targets" />
+  <ImportGroup Label="ExtensionTargets">
+  </ImportGroup>
+</Project>

intl/icu/source/tools/tzcode/icuzdump.vcxproj.filters

@@ -0,0 +1,22 @@
+<?xml version="1.0" encoding="utf-8"?>
+<Project ToolsVersion="4.0" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+  <ItemGroup>
+    <Filter Include="Source Files">
+      <UniqueIdentifier>{4FC737F1-C7A5-4376-A066-2A32D752A2FF}</UniqueIdentifier>
+      <Extensions>cpp;c;cc;cxx;def;odl;idl;hpj;bat;asm;asmx</Extensions>
+    </Filter>
+    <Filter Include="Header Files">
+      <UniqueIdentifier>{93995380-89BD-4b04-88EB-625FBE52EBFB}</UniqueIdentifier>
+      <Extensions>h;hpp;hxx;hm;inl;inc;xsd</Extensions>
+    </Filter>
+    <Filter Include="Resource Files">
+      <UniqueIdentifier>{67DA6AB6-F800-4c08-8B7A-83BB121AAD01}</UniqueIdentifier>
+      <Extensions>rc;ico;cur;bmp;dlg;rc2;rct;bin;rgs;gif;jpg;jpeg;jpe;resx;tiff;tif;png;wav</Extensions>
+    </Filter>
+  </ItemGroup>
+  <ItemGroup>
+    <ClCompile Include="icuzdump.cpp">
+      <Filter>Source Files</Filter>
+    </ClCompile>
+  </ItemGroup>
+</Project>

intl/icu/source/tools/tzcode/icuzones

@@ -0,0 +1,73 @@
+# Copyright (C) 2016 and later: Unicode, Inc. and others.
+# License & terms of use: http://www.unicode.org/copyright.html
+######################################################################
+# Copyright (C) 2007-2014, International Business Machines
+# Corporation and others.  All Rights Reserved.
+######################################################################
+# This is an ICU-specific file with the same format as regular
+# tzdata time zone files, for consistent parsing by the tools that
+# turn "Olson" tzdata into ICU's zoneinfo.txt.
+# The purpose of this file is to give ICU a superset of the time zones
+# that are in CLDR and also include legacy ICU time zones originally
+# in tz.alias for rataining backward compatibility.
+
+# Add Etc/Unknown, defined by CLDR. Give it Etc/GMT behavior.
+
+# Zone	NAME		GMTOFF	RULES	FORMAT
+Zone	Etc/Unknown	0	-	Unknown
+
+# SystemV time zones.
+# The Olson systemv file has these commented out.
+
+# Zone	NAME		GMTOFF	RULES/SAVE	FORMAT	[UNTIL]
+Zone	SystemV/AST4ADT	-4:00	SystemV		A%sT
+Zone	SystemV/EST5EDT	-5:00	SystemV		E%sT
+Zone	SystemV/CST6CDT	-6:00	SystemV		C%sT
+Zone	SystemV/MST7MDT	-7:00	SystemV		M%sT
+Zone	SystemV/PST8PDT	-8:00	SystemV		P%sT
+Zone	SystemV/YST9YDT	-9:00	SystemV		Y%sT
+Zone	SystemV/AST4	-4:00	-		AST
+Zone	SystemV/EST5	-5:00	-		EST
+Zone	SystemV/CST6	-6:00	-		CST
+Zone	SystemV/MST7	-7:00	-		MST
+Zone	SystemV/PST8	-8:00	-		PST
+Zone	SystemV/YST9	-9:00	-		YST
+Zone	SystemV/HST10	-10:00	-		HST
+
+
+# The list below is for supporting legacy ICU zone aliases.
+# These definitions were originally defined in tz.alias.
+
+#### Aliases that conflict with Olson compatibility Zone definition
+
+Link Australia/Darwin ACT
+Link Australia/Sydney AET
+Link America/Argentina/Buenos_Aires AGT
+Link Africa/Cairo ART
+Link America/Anchorage AST
+Link America/Sao_Paulo BET
+Link Asia/Dhaka BST
+Link Africa/Maputo CAT
+Link America/St_Johns CNT
+Link America/Chicago CST
+Link Asia/Shanghai CTT
+Link Africa/Addis_Ababa EAT
+Link Europe/Paris ECT
+#Link Europe/Istanbul EET # EET is a standard UNIX zone
+####Link EST America/New_York EST # Defined as -05:00
+####Link Pacific/Honolulu HST # Defined as -10:00
+Link America/Indiana/Indianapolis IET
+Link Asia/Kolkata IST
+Link Asia/Tokyo JST
+#Link Asia/Tehran MET # MET is a standard UNIX zone
+Link Pacific/Apia MIT
+####Link America/Denver MST # Defined as -07:00
+Link Asia/Yerevan NET
+Link Pacific/Auckland NST
+Link Asia/Karachi PLT
+Link America/Phoenix PNT
+Link America/Puerto_Rico PRT
+Link America/Los_Angeles PST
+Link Pacific/Guadalcanal SST
+#Link Etc/UTC UTC # Olson LINK
+Link Asia/Ho_Chi_Minh VST

intl/icu/source/tools/tzcode/private.h

@@ -0,0 +1,423 @@
+#ifndef PRIVATE_H
+
+#define PRIVATE_H
+
+/*
+** This file is in the public domain, so clarified as of
+** 1996-06-05 by Arthur David Olson.
+*/
+
+/*
+** This header is for use ONLY with the time conversion code.
+** There is no guarantee that it will remain unchanged,
+** or that it will remain at all.
+** Do NOT copy it to any system include directory.
+** Thank you!
+*/
+
+#define GRANDPARENTED	"Local time zone must be set--see zic manual page"
+
+/*
+** Defaults for preprocessor symbols.
+** You can override these in your C compiler options, e.g. `-DHAVE_ADJTIME=0'.
+*/
+
+#ifndef HAVE_ADJTIME
+#define HAVE_ADJTIME		1
+#endif /* !defined HAVE_ADJTIME */
+
+#ifndef HAVE_GETTEXT
+#define HAVE_GETTEXT		0
+#endif /* !defined HAVE_GETTEXT */
+
+#ifndef HAVE_INCOMPATIBLE_CTIME_R
+#define HAVE_INCOMPATIBLE_CTIME_R	0
+#endif /* !defined INCOMPATIBLE_CTIME_R */
+
+#ifndef HAVE_LINK
+#define HAVE_LINK		1
+#endif /* !defined HAVE_LINK */
+
+#ifndef HAVE_SETTIMEOFDAY
+#define HAVE_SETTIMEOFDAY	3
+#endif /* !defined HAVE_SETTIMEOFDAY */
+
+#ifndef HAVE_SYMLINK
+#define HAVE_SYMLINK		1
+#endif /* !defined HAVE_SYMLINK */
+
+#ifndef HAVE_SYS_STAT_H
+#define HAVE_SYS_STAT_H		1
+#endif /* !defined HAVE_SYS_STAT_H */
+
+#ifndef HAVE_SYS_WAIT_H
+#define HAVE_SYS_WAIT_H		1
+#endif /* !defined HAVE_SYS_WAIT_H */
+
+#ifndef HAVE_UNISTD_H
+#define HAVE_UNISTD_H		1
+#endif /* !defined HAVE_UNISTD_H */
+
+#ifndef HAVE_UTMPX_H
+#define HAVE_UTMPX_H		0
+#endif /* !defined HAVE_UTMPX_H */
+
+#ifndef LOCALE_HOME
+#define LOCALE_HOME		"/usr/lib/locale"
+#endif /* !defined LOCALE_HOME */
+
+#if HAVE_INCOMPATIBLE_CTIME_R
+#define asctime_r _incompatible_asctime_r
+#define ctime_r _incompatible_ctime_r
+#endif /* HAVE_INCOMPATIBLE_CTIME_R */
+
+/*
+** Nested includes
+*/
+
+#include "sys/types.h"	/* for time_t */
+#include "stdio.h"
+#include "errno.h"
+#include "string.h"
+#include "limits.h"	/* for CHAR_BIT et al. */
+#include "time.h"
+#include "stdlib.h"
+
+#if HAVE_GETTEXT
+#include "libintl.h"
+#endif /* HAVE_GETTEXT */
+
+#if HAVE_SYS_WAIT_H
+#include <sys/wait.h>	/* for WIFEXITED and WEXITSTATUS */
+#endif /* HAVE_SYS_WAIT_H */
+
+#ifndef WIFEXITED
+#define WIFEXITED(status)	(((status) & 0xff) == 0)
+#endif /* !defined WIFEXITED */
+#ifndef WEXITSTATUS
+#define WEXITSTATUS(status)	(((status) >> 8) & 0xff)
+#endif /* !defined WEXITSTATUS */
+
+#if HAVE_UNISTD_H
+#include "unistd.h"	/* for F_OK, R_OK, and other POSIX goodness */
+#endif /* HAVE_UNISTD_H */
+
+#ifndef F_OK
+#define F_OK	0
+#endif /* !defined F_OK */
+#ifndef R_OK
+#define R_OK	4
+#endif /* !defined R_OK */
+
+/* Unlike <ctype.h>'s isdigit, this also works if c < 0 | c > UCHAR_MAX. */
+#define is_digit(c) ((unsigned)(c) - '0' <= 9)
+
+/*
+** Define HAVE_STDINT_H's default value here, rather than at the
+** start, since __GLIBC__'s value depends on previously-included
+** files.
+** (glibc 2.1 and later have stdint.h, even with pre-C99 compilers.)
+*/
+#ifndef HAVE_STDINT_H
+#define HAVE_STDINT_H \
+	(199901 <= __STDC_VERSION__ || \
+	2 < (__GLIBC__ + (0 < __GLIBC_MINOR__)))
+#endif /* !defined HAVE_STDINT_H */
+
+#if HAVE_STDINT_H
+#include "stdint.h"
+#endif /* !HAVE_STDINT_H */
+
+#ifndef HAVE_INTTYPES_H
+# define HAVE_INTTYPES_H HAVE_STDINT_H
+#endif
+#if HAVE_INTTYPES_H
+# include <inttypes.h>
+#endif
+
+#ifndef INT_FAST64_MAX
+/* Pre-C99 GCC compilers define __LONG_LONG_MAX__ instead of LLONG_MAX.  */
+#if defined LLONG_MAX || defined __LONG_LONG_MAX__
+typedef long long	int_fast64_t;
+# ifdef LLONG_MAX
+#  define INT_FAST64_MIN LLONG_MIN
+#  define INT_FAST64_MAX LLONG_MAX
+# else
+#  define INT_FAST64_MIN __LONG_LONG_MIN__
+#  define INT_FAST64_MAX __LONG_LONG_MAX__
+# endif
+# define SCNdFAST64 "lld"
+#else /* ! (defined LLONG_MAX || defined __LONG_LONG_MAX__) */
+#if (LONG_MAX >> 31) < 0xffffffff
+Please use a compiler that supports a 64-bit integer type (or wider);
+you may need to compile with "-DHAVE_STDINT_H".
+#endif /* (LONG_MAX >> 31) < 0xffffffff */
+typedef long		int_fast64_t;
+# define INT_FAST64_MIN LONG_MIN
+# define INT_FAST64_MAX LONG_MAX
+# define SCNdFAST64 "ld"
+#endif /* ! (defined LLONG_MAX || defined __LONG_LONG_MAX__) */
+#endif /* !defined INT_FAST64_MAX */
+
+#ifndef INT_FAST32_MAX
+# if INT_MAX >> 31 == 0
+typedef long int_fast32_t;
+# else
+typedef int int_fast32_t;
+# endif
+#endif
+
+#ifndef INTMAX_MAX
+# if defined LLONG_MAX || defined __LONG_LONG_MAX__
+typedef long long intmax_t;
+#  define strtoimax strtoll
+#  define PRIdMAX "lld"
+#  ifdef LLONG_MAX
+#   define INTMAX_MAX LLONG_MAX
+#   define INTMAX_MIN LLONG_MIN
+#  else
+#   define INTMAX_MAX __LONG_LONG_MAX__
+#   define INTMAX_MIN __LONG_LONG_MIN__
+#  endif
+# else
+typedef long intmax_t;
+#  define strtoimax strtol
+#  define PRIdMAX "ld"
+#  define INTMAX_MAX LONG_MAX
+#  define INTMAX_MIN LONG_MIN
+# endif
+#endif
+
+#ifndef UINTMAX_MAX
+# if defined ULLONG_MAX || defined __LONG_LONG_MAX__
+typedef unsigned long long uintmax_t;
+#  define PRIuMAX "llu"
+# else
+typedef unsigned long uintmax_t;
+#  define PRIuMAX "lu"
+# endif
+#endif
+
+#ifndef INT32_MAX
+#define INT32_MAX 0x7fffffff
+#endif /* !defined INT32_MAX */
+#ifndef INT32_MIN
+#define INT32_MIN (-1 - INT32_MAX)
+#endif /* !defined INT32_MIN */
+
+#ifndef SIZE_MAX
+#define SIZE_MAX ((size_t) -1)
+#endif
+
+#if 2 < __GNUC__ + (96 <= __GNUC_MINOR__)
+# define ATTRIBUTE_CONST __attribute__ ((const))
+# define ATTRIBUTE_PURE __attribute__ ((__pure__))
+# define ATTRIBUTE_FORMAT(spec) __attribute__ ((__format__ spec))
+#else
+# define ATTRIBUTE_CONST /* empty */
+# define ATTRIBUTE_PURE /* empty */
+# define ATTRIBUTE_FORMAT(spec) /* empty */
+#endif
+
+#if !defined _Noreturn && __STDC_VERSION__ < 201112
+# if 2 < __GNUC__ + (8 <= __GNUC_MINOR__)
+#  define _Noreturn __attribute__ ((__noreturn__))
+# else
+#  define _Noreturn
+# endif
+#endif
+
+#if __STDC_VERSION__ < 199901 && !defined restrict
+# define restrict /* empty */
+#endif
+
+/*
+** Workarounds for compilers/systems.
+*/
+
+/*
+** Some time.h implementations don't declare asctime_r.
+** Others might define it as a macro.
+** Fix the former without affecting the latter.
+*/
+
+#ifndef asctime_r
+extern char *	asctime_r(struct tm const *, char *);
+#endif
+
+/*
+** Compile with -Dtime_tz=T to build the tz package with a private
+** time_t type equivalent to T rather than the system-supplied time_t.
+** This debugging feature can test unusual design decisions
+** (e.g., time_t wider than 'long', or unsigned time_t) even on
+** typical platforms.
+*/
+#ifdef time_tz
+static time_t sys_time(time_t *x) { return time(x); }
+
+# undef  ctime
+# define ctime tz_ctime
+# undef  ctime_r
+# define ctime_r tz_ctime_r
+# undef  difftime
+# define difftime tz_difftime
+# undef  gmtime
+# define gmtime tz_gmtime
+# undef  gmtime_r
+# define gmtime_r tz_gmtime_r
+# undef  localtime
+# define localtime tz_localtime
+# undef  localtime_r
+# define localtime_r tz_localtime_r
+# undef  mktime
+# define mktime tz_mktime
+# undef  time
+# define time tz_time
+# undef  time_t
+# define time_t tz_time_t
+
+typedef time_tz time_t;
+
+char *ctime(time_t const *);
+char *ctime_r(time_t const *, char *);
+double difftime(time_t, time_t);
+struct tm *gmtime(time_t const *);
+struct tm *gmtime_r(time_t const *restrict, struct tm *restrict);
+struct tm *localtime(time_t const *);
+struct tm *localtime_r(time_t const *restrict, struct tm *restrict);
+time_t mktime(struct tm *);
+
+static time_t
+time(time_t *p)
+{
+	time_t r = sys_time(0);
+	if (p)
+		*p = r;
+	return r;
+}
+#endif
+
+/*
+** Private function declarations.
+*/
+
+char *		icatalloc(char * old, const char * new);
+char *		icpyalloc(const char * string);
+const char *	scheck(const char * string, const char * format);
+
+/*
+** Finally, some convenience items.
+*/
+
+#ifndef TRUE
+#define TRUE	1
+#endif /* !defined TRUE */
+
+#ifndef FALSE
+#define FALSE	0
+#endif /* !defined FALSE */
+
+#ifndef TYPE_BIT
+#define TYPE_BIT(type)	(sizeof (type) * CHAR_BIT)
+#endif /* !defined TYPE_BIT */
+
+#ifndef TYPE_SIGNED
+#define TYPE_SIGNED(type) (((type) -1) < 0)
+#endif /* !defined TYPE_SIGNED */
+
+/* The minimum and maximum finite time values.  */
+static time_t const time_t_min =
+  (TYPE_SIGNED(time_t)
+   ? (time_t) -1 << (CHAR_BIT * sizeof (time_t) - 1)
+   : 0);
+static time_t const time_t_max =
+  (TYPE_SIGNED(time_t)
+   ? - (~ 0 < 0) - ((time_t) -1 << (CHAR_BIT * sizeof (time_t) - 1))
+   : -1);
+
+#ifndef INT_STRLEN_MAXIMUM
+/*
+** 302 / 1000 is log10(2.0) rounded up.
+** Subtract one for the sign bit if the type is signed;
+** add one for integer division truncation;
+** add one more for a minus sign if the type is signed.
+*/
+#define INT_STRLEN_MAXIMUM(type) \
+	((TYPE_BIT(type) - TYPE_SIGNED(type)) * 302 / 1000 + \
+	1 + TYPE_SIGNED(type))
+#endif /* !defined INT_STRLEN_MAXIMUM */
+
+/*
+** INITIALIZE(x)
+*/
+
+#ifndef GNUC_or_lint
+#ifdef lint
+#define GNUC_or_lint
+#endif /* defined lint */
+#ifndef 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)
+#endif /* defined GNUC_or_lint */
+#ifndef 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 */
+
+#if HAVE_INCOMPATIBLE_CTIME_R
+#undef asctime_r
+#undef ctime_r
+char *asctime_r(struct tm const *, char *);
+char *ctime_r(time_t const *, char *);
+#endif /* HAVE_INCOMPATIBLE_CTIME_R */
+
+#ifndef YEARSPERREPEAT
+#define YEARSPERREPEAT		400	/* years before a Gregorian repeat */
+#endif /* !defined YEARSPERREPEAT */
+
+/*
+** The Gregorian year averages 365.2425 days, which is 31556952 seconds.
+*/
+
+#ifndef AVGSECSPERYEAR
+#define AVGSECSPERYEAR		31556952L
+#endif /* !defined AVGSECSPERYEAR */
+
+#ifndef SECSPERREPEAT
+#define SECSPERREPEAT		((int_fast64_t) YEARSPERREPEAT * (int_fast64_t) AVGSECSPERYEAR)
+#endif /* !defined SECSPERREPEAT */
+
+#ifndef SECSPERREPEAT_BITS
+#define SECSPERREPEAT_BITS	34	/* ceil(log2(SECSPERREPEAT)) */
+#endif /* !defined SECSPERREPEAT_BITS */
+
+/*
+** UNIX was a registered trademark of The Open Group in 2003.
+*/
+
+#endif /* !defined PRIVATE_H */

intl/icu/source/tools/tzcode/readme.txt

@@ -0,0 +1,95 @@
+* Copyright (C) 2016 and later: Unicode, Inc. and others.
+* License & terms of use: http://www.unicode.org/copyright.html
+**********************************************************************
+* Copyright (c) 2003-2014, International Business Machines
+* Corporation and others.  All Rights Reserved.
+**********************************************************************
+* Author: Alan Liu
+* Created: August 18 2003
+* Since: ICU 2.8
+**********************************************************************
+
+Note:  this directory currently contains tzcode as of tzcode2014b.tar.gz
+   with localtime.c  patches from tzcode2014b.tar.gz
+
+
+----------------------------------------------------------------------
+OVERVIEW
+
+This file describes the tools in icu/source/tools/tzcode
+
+The purpose of these tools is to process the zoneinfo or "Olson" time
+zone database into a form usable by ICU4C (release 2.8 and later).
+Unlike earlier releases, ICU4C 2.8 supports historical time zone
+behavior, as well as the full set of Olson compatibility IDs.
+
+References:
+
+ICU4C:  http://www.icu-project.org/
+Olson:  ftp://ftp.iana.org/tz/releases/
+
+----------------------------------------------------------------------
+ICU4C vs. ICU4J
+
+For ICU releases >= 2.8, both ICU4C and ICU4J implement full
+historical time zones, based on Olson data.  The implementations in C
+and Java are somewhat different.  The C implementation is a
+self-contained implementation, whereas ICU4J uses the underlying JDK
+1.3 or 1.4 time zone implementation.
+
+Older versions of ICU (C and Java <= 2.6) implement a "present day
+snapshot".  This only reflects current time zone behavior, without
+historical variation.  Furthermore, it lacks the full set of Olson
+compatibility IDs.
+
+----------------------------------------------------------------------
+BACKGROUND
+
+The zoneinfo or "Olson" time zone package is used by various systems
+to describe the behavior of time zones.  The package consists of
+several parts.  E.g.:
+
+  Index of ftp://ftp.iana.org/tz/releases/
+
+  tzcode2014b.tar.gz      172 KB       3/25/2014     05:11:00 AM
+  tzdata2014b.tar.gz      216 KB       3/25/2014     05:11:00 AM
+
+ICU only uses the tzdataYYYYV.tar.gz files,
+where YYYY is the year and V is the version letter ('a'...'z').
+
+This directory has partial contents of tzcode checked into ICU
+
+----------------------------------------------------------------------
+HOWTO
+
+0. Note, these instructions will only work on POSIX type systems.
+
+1. Obtain the current versions of tzdataYYYYV.tar.gz (aka `tzdata') from
+   the FTP site given above.  Either manually download or use wget:
+
+   $ cd {path_to}/icu/source/tools/tzcode
+   $ wget "ftp://ftp.iana.org/tz/releases/tzdata*.tar.gz"
+
+2. Copy only one tzdata*.tar.gz file into the icu/source/tools/tzcode/
+   directory (this directory).
+
+   *** Make sure you only have ONE FILE named tzdata*.tar.gz in the
+       directory.
+
+3. Build ICU normally. You will see a notice "updating zoneinfo.txt..."
+
+### Following instructions for ICU maintainers only ###
+
+4. Obtain the current version of tzcodeYYYY.tar.gz from the FTP site to
+   this directory.
+
+5. Run make target "check-dump".  This target extract makes the original
+   tzcode and compile the original tzdata with icu supplemental data
+   (icuzones).  Then it makes zdump / icuzdump and dump all time
+   transitions for all ICU timezone to files under zdumpout / icuzdumpout
+   directory.  When they produce different results, the target returns
+   the error.
+
+6. Don't forget to check in the new zoneinfo64.txt (from its location at
+   {path_to}/icu/source/data/misc/zoneinfo64.txt) into SVN.
+

intl/icu/source/tools/tzcode/scheck.c

@@ -0,0 +1,64 @@
+/*
+** This file is in the public domain, so clarified as of
+** 2006-07-17 by Arthur David Olson.
+*/
+
+/*LINTLIBRARY*/
+
+#include "private.h"
+
+const char *
+scheck(const char *const string, const char *const format)
+{
+	register char *		fbuf;
+	register const char *	fp;
+	register char *		tp;
+	register int		c;
+	register const char *	result;
+	char			dummy;
+
+	result = "";
+	if (string == NULL || format == NULL)
+		return result;
+	fbuf = malloc(2 * strlen(format) + 4);
+	if (fbuf == NULL)
+		return result;
+	fp = format;
+	tp = fbuf;
+
+	/*
+	** Copy directives, suppressing each conversion that is not
+	** already suppressed.  Scansets containing '%' are not
+	** supported; e.g., the conversion specification "%[%]" is not
+	** supported.  Also, multibyte characters containing a
+	** non-leading '%' byte are not supported.
+	*/
+	while ((*tp++ = c = *fp++) != '\0') {
+		if (c != '%')
+			continue;
+		if (is_digit(*fp)) {
+			char const *f = fp;
+			char *t = tp;
+			do {
+				*t++ = c = *f++;
+			} while (is_digit(c));
+			if (c == '$') {
+				fp = f;
+				tp = t;
+			}
+		}
+		*tp++ = '*';
+		if (*fp == '*')
+			++fp;
+		if ((*tp++ = *fp++) == '\0')
+			break;
+	}
+
+	*(tp - 1) = '%';
+	*tp++ = 'c';
+	*tp = '\0';
+	if (sscanf(string, fbuf, &dummy) != 1)
+		result = format;
+	free(fbuf);
+	return result;
+}

intl/icu/source/tools/tzcode/tz2icu.h

@@ -0,0 +1,46 @@
+// Copyright (C) 2016 and later: Unicode, Inc. and others.
+// License & terms of use: http://www.unicode.org/copyright.html
+/*
+**********************************************************************
+* Copyright (c) 2003-2013, International Business Machines
+* Corporation and others.  All Rights Reserved.
+**********************************************************************
+* Author: Alan Liu
+* Created: July 10 2003
+* Since: ICU 2.8
+**********************************************************************
+*/
+
+#ifndef _TZ2ICU_H_
+#define _TZ2ICU_H_
+
+/* We have modified the zoneinfo binary format (we write raw offset
+ * and DST offset separately instead of their sum) so we notate the
+ * file with a distinct signature.  This prevents someone from trying
+ * to use our output files as normal zoneinfo files, and also prevents
+ * someone from trying to use normal zoneinfo files for ICU.  We also
+ * use the first byte of the reserved section as a version integer, to
+ * be incremented each time the data format changes.
+ */
+
+#define TZ_ICU_MAGIC "TZic" /* cf. TZ_MAGIC = "TZif" */
+
+typedef unsigned char ICUZoneinfoVersion;
+
+#define TZ_ICU_VERSION ((ICUZoneinfoVersion) 1)
+
+/* File into which we will write supplemental ICU data.  This allows
+ * zic to communicate final zone data to tz2icu. */
+#define ICU_ZONE_FILE "icu_zone.txt"
+
+/* Output resource name.  This determines both the file name and the
+ * resource name within the file.  That is, the output will be to the
+ * file ICU_TZ_RESOURCE ".txt" and the resource within it will be
+ * ICU_TZ_RESOURCE. */
+#define ICU_TZ_RESOURCE_OLD "zoneinfo"
+#define ICU_TZ_RESOURCE "zoneinfo64"
+
+/* File containinng custom zone-region mapping. */
+#define ICU_REGIONS "icuregions"
+
+#endif

intl/icu/source/tools/tzcode/tzfile.h

@@ -0,0 +1,169 @@
+#ifndef TZFILE_H
+
+#define TZFILE_H
+
+/*
+** This file is in the public domain, so clarified as of
+** 1996-06-05 by Arthur David Olson.
+*/
+
+/*
+** This header is for use ONLY with the time conversion code.
+** There is no guarantee that it will remain unchanged,
+** or that it will remain at all.
+** Do NOT copy it to any system include directory.
+** Thank you!
+*/
+
+/*
+** Information about time zone files.
+*/
+
+#ifndef TZDIR
+#define TZDIR	"/usr/local/etc/zoneinfo" /* Time zone object file directory */
+#endif /* !defined TZDIR */
+
+#ifndef TZDEFAULT
+#define TZDEFAULT	"localtime"
+#endif /* !defined TZDEFAULT */
+
+#ifndef TZDEFRULES
+#define TZDEFRULES	"posixrules"
+#endif /* !defined TZDEFRULES */
+
+/*
+** Each file begins with. . .
+*/
+
+#define	TZ_MAGIC	"TZif"
+
+struct tzhead {
+	char	tzh_magic[4];		/* TZ_MAGIC */
+	char	tzh_version[1];		/* '\0' or '2' or '3' as of 2013 */
+	char	tzh_reserved[15];	/* reserved--must be zero */
+	char	tzh_ttisgmtcnt[4];	/* coded number of trans. time flags */
+	char	tzh_ttisstdcnt[4];	/* coded number of trans. time flags */
+	char	tzh_leapcnt[4];		/* coded number of leap seconds */
+	char	tzh_timecnt[4];		/* coded number of transition times */
+	char	tzh_typecnt[4];		/* coded number of local time types */
+	char	tzh_charcnt[4];		/* coded number of abbr. chars */
+};
+
+/*
+** . . .followed by. . .
+**
+**	tzh_timecnt (char [4])s		coded transition times a la time(2)
+**	tzh_timecnt (unsigned char)s	types of local time starting at above
+**	tzh_typecnt repetitions of
+**		one (char [4])		coded UT offset in seconds
+**		one (unsigned char)	used to set tm_isdst
+**		one (unsigned char)	that's an abbreviation list index
+**	tzh_charcnt (char)s		'\0'-terminated zone abbreviations
+**	tzh_leapcnt repetitions of
+**		one (char [4])		coded leap second transition times
+**		one (char [4])		total correction after above
+**	tzh_ttisstdcnt (char)s		indexed by type; if TRUE, transition
+**					time is standard time, if FALSE,
+**					transition time is wall clock time
+**					if absent, transition times are
+**					assumed to be wall clock time
+**	tzh_ttisgmtcnt (char)s		indexed by type; if TRUE, transition
+**					time is UT, if FALSE,
+**					transition time is local time
+**					if absent, transition times are
+**					assumed to be local time
+*/
+
+/*
+** If tzh_version is '2' or greater, the above is followed by a second instance
+** of tzhead and a second instance of the data in which each coded transition
+** time uses 8 rather than 4 chars,
+** then a POSIX-TZ-environment-variable-style string for use in handling
+** instants after the last transition time stored in the file
+** (with nothing between the newlines if there is no POSIX representation for
+** such instants).
+**
+** If tz_version is '3' or greater, the above is extended as follows.
+** First, the POSIX TZ string's hour offset may range from -167
+** through 167 as compared to the POSIX-required 0 through 24.
+** Second, its DST start time may be January 1 at 00:00 and its stop
+** time December 31 at 24:00 plus the difference between DST and
+** standard time, indicating DST all year.
+*/
+
+/*
+** In the current implementation, "tzset()" refuses to deal with files that
+** exceed any of the limits below.
+*/
+
+#ifndef TZ_MAX_TIMES
+#define TZ_MAX_TIMES	2000
+#endif /* !defined TZ_MAX_TIMES */
+
+#ifndef TZ_MAX_TYPES
+/* This must be at least 17 for Europe/Samara and Europe/Vilnius.  */
+#define TZ_MAX_TYPES	256 /* Limited by what (unsigned char)'s can hold */
+#endif /* !defined TZ_MAX_TYPES */
+
+#ifndef TZ_MAX_CHARS
+#define TZ_MAX_CHARS	50	/* Maximum number of abbreviation characters */
+				/* (limited by what unsigned chars can hold) */
+#endif /* !defined TZ_MAX_CHARS */
+
+#ifndef TZ_MAX_LEAPS
+#define TZ_MAX_LEAPS	50	/* Maximum number of leap second corrections */
+#endif /* !defined TZ_MAX_LEAPS */
+
+#define SECSPERMIN	60
+#define MINSPERHOUR	60
+#define HOURSPERDAY	24
+#define DAYSPERWEEK	7
+#define DAYSPERNYEAR	365
+#define DAYSPERLYEAR	366
+#define SECSPERHOUR	(SECSPERMIN * MINSPERHOUR)
+#define SECSPERDAY	((int_fast32_t) SECSPERHOUR * HOURSPERDAY)
+#define MONSPERYEAR	12
+
+#define TM_SUNDAY	0
+#define TM_MONDAY	1
+#define TM_TUESDAY	2
+#define TM_WEDNESDAY	3
+#define TM_THURSDAY	4
+#define TM_FRIDAY	5
+#define TM_SATURDAY	6
+
+#define TM_JANUARY	0
+#define TM_FEBRUARY	1
+#define TM_MARCH	2
+#define TM_APRIL	3
+#define TM_MAY		4
+#define TM_JUNE		5
+#define TM_JULY		6
+#define TM_AUGUST	7
+#define TM_SEPTEMBER	8
+#define TM_OCTOBER	9
+#define TM_NOVEMBER	10
+#define TM_DECEMBER	11
+
+#define TM_YEAR_BASE	1900
+
+#define EPOCH_YEAR	1970
+#define EPOCH_WDAY	TM_THURSDAY
+
+#define isleap(y) (((y) % 4) == 0 && (((y) % 100) != 0 || ((y) % 400) == 0))
+
+/*
+** Since everything in isleap is modulo 400 (or a factor of 400), we know that
+**	isleap(y) == isleap(y % 400)
+** and so
+**	isleap(a + b) == isleap((a + b) % 400)
+** or
+**	isleap(a + b) == isleap(a % 400 + b % 400)
+** This is true even if % means modulo rather than Fortran remainder
+** (which is allowed by C89 but not C99).
+** We use this to avoid addition overflow problems.
+*/
+
+#define isleap_sum(a, b)	isleap((a) % 400 + (b) % 400)
+
+#endif /* !defined TZFILE_H */

intl/icu/source/tools/tzcode/tzselect.ksh

@@ -0,0 +1,308 @@
+#! /bin/ksh
+
+# '@(#)tzselect.ksh	8.1'
+
+# Ask the user about the time zone, and output the resulting TZ value to stdout.
+# Interact with the user via stderr and stdin.
+
+# Contributed by Paul Eggert.
+
+# Porting notes:
+#
+# This script requires several features of the Korn shell.
+# If your host lacks the Korn shell,
+# you can use either of the following free programs instead:
+#
+#	<a href=ftp://ftp.gnu.org/pub/gnu/>
+#	Bourne-Again shell (bash)
+#	</a>
+#
+#	<a href=ftp://ftp.cs.mun.ca/pub/pdksh/pdksh.tar.gz>
+#	Public domain ksh
+#	</a>
+#
+# This script also uses several features of modern awk programs.
+# If your host lacks awk, or has an old awk that does not conform to Posix.2,
+# you can use either of the following free programs instead:
+#
+#	<a href=ftp://ftp.gnu.org/pub/gnu/>
+#	GNU awk (gawk)
+#	</a>
+#
+#	<a href=ftp://ftp.whidbey.net/pub/brennan/>
+#	mawk
+#	</a>
+
+
+# Specify default values for environment variables if they are unset.
+: ${AWK=awk}
+: ${TZDIR=$(pwd)}
+
+# Check for awk Posix compliance.
+($AWK -v x=y 'BEGIN { exit 123 }') </dev/null >/dev/null 2>&1
+[ $? = 123 ] || {
+	echo >&2 "$0: Sorry, your \`$AWK' program is not Posix compatible."
+	exit 1
+}
+
+# Make sure the tables are readable.
+TZ_COUNTRY_TABLE=$TZDIR/iso3166.tab
+TZ_ZONE_TABLE=$TZDIR/zone.tab
+for f in $TZ_COUNTRY_TABLE $TZ_ZONE_TABLE
+do
+	<$f || {
+		echo >&2 "$0: time zone files are not set up correctly"
+		exit 1
+	}
+done
+
+newline='
+'
+IFS=$newline
+
+
+# Work around a bug in bash 1.14.7 and earlier, where $PS3 is sent to stdout.
+case $(echo 1 | (select x in x; do break; done) 2>/dev/null) in
+?*) PS3=
+esac
+
+
+# Begin the main loop.  We come back here if the user wants to retry.
+while
+
+	echo >&2 'Please identify a location' \
+		'so that time zone rules can be set correctly.'
+
+	continent=
+	country=
+	region=
+
+
+	# Ask the user for continent or ocean.
+
+	echo >&2 'Please select a continent or ocean.'
+
+	select continent in \
+	    Africa \
+	    Americas \
+	    Antarctica \
+	    'Arctic Ocean' \
+	    Asia \
+	    'Atlantic Ocean' \
+	    Australia \
+	    Europe \
+	    'Indian Ocean' \
+	    'Pacific Ocean' \
+	    'none - I want to specify the time zone using the Posix TZ format.'
+	do
+	    case $continent in
+	    '')
+		echo >&2 'Please enter a number in range.';;
+	    ?*)
+		case $continent in
+		Americas) continent=America;;
+		*' '*) continent=$(expr "$continent" : '\([^ ]*\)')
+		esac
+		break
+	    esac
+	done
+	case $continent in
+	'')
+		exit 1;;
+	none)
+		# Ask the user for a Posix TZ string.  Check that it conforms.
+		while
+			echo >&2 'Please enter the desired value' \
+				'of the TZ environment variable.'
+			echo >&2 'For example, GST-10 is a zone named GST' \
+				'that is 10 hours ahead (east) of UTC.'
+			read TZ
+			$AWK -v TZ="$TZ" 'BEGIN {
+				tzname = "[^-+,0-9][^-+,0-9][^-+,0-9]+"
+				time = "[0-2]?[0-9](:[0-5][0-9](:[0-5][0-9])?)?"
+				offset = "[-+]?" time
+				date = "(J?[0-9]+|M[0-9]+\.[0-9]+\.[0-9]+)"
+				datetime = "," date "(/" time ")?"
+				tzpattern = "^(:.*|" tzname offset "(" tzname \
+				  "(" offset ")?(" datetime datetime ")?)?)$"
+				if (TZ ~ tzpattern) exit 1
+				exit 0
+			}'
+		do
+			echo >&2 "\`$TZ' is not a conforming" \
+				'Posix time zone string.'
+		done
+		TZ_for_date=$TZ;;
+	*)
+		# Get list of names of countries in the continent or ocean.
+		countries=$($AWK -F'\t' \
+			-v continent="$continent" \
+			-v TZ_COUNTRY_TABLE="$TZ_COUNTRY_TABLE" \
+		'
+			/^#/ { next }
+			$3 ~ ("^" continent "/") {
+				if (!cc_seen[$1]++) cc_list[++ccs] = $1
+			}
+			END {
+				while (getline <TZ_COUNTRY_TABLE) {
+					if ($0 !~ /^#/) cc_name[$1] = $2
+				}
+				for (i = 1; i <= ccs; i++) {
+					country = cc_list[i]
+					if (cc_name[country]) {
+					  country = cc_name[country]
+					}
+					print country
+				}
+			}
+		' <$TZ_ZONE_TABLE | sort -f)
+
+
+		# If there's more than one country, ask the user which one.
+		case $countries in
+		*"$newline"*)
+			echo >&2 'Please select a country.'
+			select country in $countries
+			do
+			    case $country in
+			    '') echo >&2 'Please enter a number in range.';;
+			    ?*) break
+			    esac
+			done
+
+			case $country in
+			'') exit 1
+			esac;;
+		*)
+			country=$countries
+		esac
+
+
+		# Get list of names of time zone rule regions in the country.
+		regions=$($AWK -F'\t' \
+			-v country="$country" \
+			-v TZ_COUNTRY_TABLE="$TZ_COUNTRY_TABLE" \
+		'
+			BEGIN {
+				cc = country
+				while (getline <TZ_COUNTRY_TABLE) {
+					if ($0 !~ /^#/  &&  country == $2) {
+						cc = $1
+						break
+					}
+				}
+			}
+			$1 == cc { print $4 }
+		' <$TZ_ZONE_TABLE)
+
+
+		# If there's more than one region, ask the user which one.
+		case $regions in
+		*"$newline"*)
+			echo >&2 'Please select one of the following' \
+				'time zone regions.'
+			select region in $regions
+			do
+				case $region in
+				'') echo >&2 'Please enter a number in range.';;
+				?*) break
+				esac
+			done
+			case $region in
+			'') exit 1
+			esac;;
+		*)
+			region=$regions
+		esac
+
+		# Determine TZ from country and region.
+		TZ=$($AWK -F'\t' \
+			-v country="$country" \
+			-v region="$region" \
+			-v TZ_COUNTRY_TABLE="$TZ_COUNTRY_TABLE" \
+		'
+			BEGIN {
+				cc = country
+				while (getline <TZ_COUNTRY_TABLE) {
+					if ($0 !~ /^#/  &&  country == $2) {
+						cc = $1
+						break
+					}
+				}
+			}
+			$1 == cc && $4 == region { print $3 }
+		' <$TZ_ZONE_TABLE)
+
+		# Make sure the corresponding zoneinfo file exists.
+		TZ_for_date=$TZDIR/$TZ
+		<$TZ_for_date || {
+			echo >&2 "$0: time zone files are not set up correctly"
+			exit 1
+		}
+	esac
+
+
+	# Use the proposed TZ to output the current date relative to UTC.
+	# Loop until they agree in seconds.
+	# Give up after 8 unsuccessful tries.
+
+	extra_info=
+	for i in 1 2 3 4 5 6 7 8
+	do
+		TZdate=$(LANG=C TZ="$TZ_for_date" date)
+		UTdate=$(LANG=C TZ=UTC0 date)
+		TZsec=$(expr "$TZdate" : '.*:\([0-5][0-9]\)')
+		UTsec=$(expr "$UTdate" : '.*:\([0-5][0-9]\)')
+		case $TZsec in
+		$UTsec)
+			extra_info="
+Local time is now:	$TZdate.
+Universal Time is now:	$UTdate."
+			break
+		esac
+	done
+
+
+	# Output TZ info and ask the user to confirm.
+
+	echo >&2 ""
+	echo >&2 "The following information has been given:"
+	echo >&2 ""
+	case $country+$region in
+	?*+?*)	echo >&2 "	$country$newline	$region";;
+	?*+)	echo >&2 "	$country";;
+	+)	echo >&2 "	TZ='$TZ'"
+	esac
+	echo >&2 ""
+	echo >&2 "Therefore TZ='$TZ' will be used.$extra_info"
+	echo >&2 "Is the above information OK?"
+
+	ok=
+	select ok in Yes No
+	do
+	    case $ok in
+	    '') echo >&2 'Please enter 1 for Yes, or 2 for No.';;
+	    ?*) break
+	    esac
+	done
+	case $ok in
+	'') exit 1;;
+	Yes) break
+	esac
+do :
+done
+
+case $SHELL in
+*csh) file=.login line="setenv TZ '$TZ'";;
+*) file=.profile line="TZ='$TZ'; export TZ"
+esac
+
+echo >&2 "
+You can make this change permanent for yourself by appending the line
+	$line
+to the file '$file' in your home directory; then log out and log in again.
+
+Here is that TZ value again, this time on standard output so that you
+can use the $0 command in shell scripts:"
+
+echo "$TZ"