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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. # Versions to use.CODE=2015eDATA=2015e set -erm -rf workmkdir workcd workmkdir zoneinfocurl -O http://www.iana.org/time-zones/repository/releases/tzcode$CODE.tar.gzcurl -O http://www.iana.org/time-zones/repository/releases/tzdata$DATA.tar.gztar xzf tzcode$CODE.tar.gztar xzf tzdata$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 2fi cd zoneinform -f ../../zoneinfo.zipzip -0 -r ../../zoneinfo.zip *cd ../.. echoif [ "$1" == "-work" ]; then 	echo Left workspace behind in work/.else	rm -rf workfiecho New time zone files in zoneinfo.zip.