go/lib/time/update.bash
Rob Pike 4760b5a478 misc: update timezone database to IANA 2016a
Fixes #14202

Change-Id: Ia6dccecb1b9b3f6c0838c99090e6ddf1ad43303c
Reviewed-on: https://go-review.googlesource.com/19175
Run-TryBot: Rob Pike <r@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Russ Cox <rsc@golang.org>
2016-02-03 03:14:59 +00:00

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#!/bin/sh
# Copyright 2012 The Go Authors. All rights reserved.
# Use of this source code is governed by a BSD-style
# license that can be found in the LICENSE file.
# This script rebuilds the time zone files using files
# downloaded from the ICANN/IANA distribution.
# Consult http://www.iana.org/time-zones for the latest versions.
# Versions to use.
CODE=2016a
DATA=2016a
set -e
rm -rf work
mkdir work
cd work
mkdir zoneinfo
curl -O http://www.iana.org/time-zones/repository/releases/tzcode$CODE.tar.gz
curl -O http://www.iana.org/time-zones/repository/releases/tzdata$DATA.tar.gz
tar xzf tzcode$CODE.tar.gz
tar xzf tzdata$DATA.tar.gz
# Turn off 64-bit output in time zone files.
# We don't need those until 2037.
perl -p -i -e 's/pass <= 2/pass <= 1/' zic.c
make CFLAGS=-DSTD_INSPIRED AWK=awk TZDIR=zoneinfo posix_only
# America/Los_Angeles should not be bigger than 1100 bytes.
# If it is, we probably failed to disable the 64-bit output, which
# triples the size of the files.
size=$(ls -l zoneinfo/America/Los_Angeles | awk '{print $5}')
if [ $size -gt 1200 ]; then
echo 'zone file too large; 64-bit edit failed?' >&2
exit 2
fi
cd zoneinfo
rm -f ../../zoneinfo.zip
zip -0 -r ../../zoneinfo.zip *
cd ../..
echo
if [ "$1" == "-work" ]; then
echo Left workspace behind in work/.
else
rm -rf work
fi
echo New time zone files in zoneinfo.zip.