bionic/libc/tools/zoneinfo/generate
Elliott Hughes d40e63ee47 Move the zoneinfo generation tool into bionic.
This also incorporates a bunch of changes to the previous script; this one
requires no setup, can be run from anywhere, and leaves no droppings.

Change-Id: I38f299f03e33950d2a64e9336f4ba7cb3c5cf6f0
2011-02-17 16:20:28 -08:00

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#!/bin/bash
# Run with no arguments from any directory, with no special setup required.
# Abort if any command returns an error exit status, or if an undefined
# variable is used.
set -e
set -u
echo "Looking for bionic..."
bionic_dir=$(cd $(dirname $0)/../../.. && pwd)
bionic_zoneinfo_dir=$bionic_dir/libc/zoneinfo
bionic_zoneinfo_tools_dir=$bionic_dir/libc/tools/zoneinfo
if [[ ! -d "$bionic_zoneinfo_dir" || ! -d "$bionic_zoneinfo_tools_dir" ]]; then
echo "Can't find bionic's zoneinfo directories!"
exit 1
fi
echo "Switching to temporary directory..."
temp_dir=`mktemp -d`
cd $temp_dir
trap "rm -rf $temp_dir; exit" INT TERM EXIT
# URL from "Sources for Time Zone and Daylight Saving Time Data"
# http://www.twinsun.com/tz/tz-link.htm
echo "Looking for new tzdata..."
wget -N --no-verbose 'ftp://elsie.nci.nih.gov/pub/tzdata*.tar.gz'
zoneinfo_version_file=$bionic_zoneinfo_dir/zoneinfo.version
if [ -f "$zoneinfo_version_file" ]; then
current_version=tzdata`sed s/\n// < $zoneinfo_version_file`
else
current_version=missing
fi
latest_archive=`ls -r -v tzdata*.tar.gz | head -n1`
latest_version=`basename $latest_archive .tar.gz`
if [ "$current_version" == "$latest_version" ]; then
echo "You already have the latest tzdata ($latest_version)!"
exit 1
fi
echo "Extracting $latest_version..."
mkdir $latest_version
tar -C $latest_version -zxf $latest_archive
echo "Compiling $latest_version..."
mkdir data
for i in \
africa \
antarctica \
asia \
australasia \
etcetera \
europe \
factory \
northamerica \
solar87 \
solar88 \
solar89 \
southamerica
do
zic -d data $latest_version/$i
done
echo "Compacting $latest_version..."
(
cat $latest_version/* | grep '^Link' | awk '{print $1, $2, $3}'
(
cat $latest_version/* | grep '^Zone' | awk '{print $2}'
cat $latest_version/* | grep '^Link' | awk '{print $3}'
) | LC_ALL="C" sort
) | grep -v Riyadh8 > setup
javac -d . \
$bionic_zoneinfo_tools_dir/ZoneCompactor.java \
$bionic_zoneinfo_tools_dir/ZoneInfo.java
java ZoneCompactor setup data
echo "Updating bionic to $latest_version..."
mv zoneinfo.dat zoneinfo.idx $bionic_zoneinfo_dir
echo $latest_version | sed 's/tzdata//' > $bionic_zoneinfo_dir/zoneinfo.version