go/lib/time/update.bash at dev.cc · dominicbarnes/go

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#!/bin/sh

# 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=2014j

DATA=2014j

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

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

echo New time zone files in zoneinfo.zip.