1#!/bin/bash
2# Copyright 2012 The Go Authors. All rights reserved.
3# Use of this source code is governed by a BSD-style
4# license that can be found in the LICENSE file.
5
6# This script rebuilds the time zone files using files
7# downloaded from the ICANN/IANA distribution.
8# Consult http://www.iana.org/time-zones for the latest versions.
9
10# Versions to use.
11CODE=2017c
12DATA=2017c
13
14set -e
15rm -rf work
16mkdir work
17cd work
18mkdir zoneinfo
19curl -L -O http://www.iana.org/time-zones/repository/releases/tzcode$CODE.tar.gz
20curl -L -O http://www.iana.org/time-zones/repository/releases/tzdata$DATA.tar.gz
21tar xzf tzcode$CODE.tar.gz
22tar xzf tzdata$DATA.tar.gz
23
24# Turn off 64-bit output in time zone files.
25# We don't need those until 2037.
26perl -p -i -e 's/pass <= 2/pass <= 1/' zic.c
27
28make CFLAGS=-DSTD_INSPIRED AWK=awk TZDIR=zoneinfo posix_only
29
30# America/Los_Angeles should not be bigger than 1100 bytes.
31# If it is, we probably failed to disable the 64-bit output, which
32# triples the size of the files.
33size=$(ls -l zoneinfo/America/Los_Angeles | awk '{print $5}')
34if [ $size -gt 1200 ]; then
35	echo 'zone file too large; 64-bit edit failed?' >&2
36	exit 2
37fi
38
39cd zoneinfo
40rm -f ../../zoneinfo.zip
41zip -0 -r ../../zoneinfo.zip *
42cd ../..
43
44echo
45if [ "$1" = "-work" ]; then 
46	echo Left workspace behind in work/.
47else
48	rm -rf work
49fi
50echo New time zone files in zoneinfo.zip.
51
52