File: update-from-latest-olson

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libdatetime-timezone-perl 1:1.20-1+2010k
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#!/usr/bin/perl -w

use strict;
use warnings;

use File::chdir;
use File::Temp ();
use Getopt::Long;
use Net::FTP;

my %opts = (
    download => 1,
    dir      => undef,
);

GetOptions(
    'download!' => \$opts{download},
    'dir:s'     => \$opts{dir},
);

my $olson_version;
my $dir = $opts{dir} ? $opts{dir} : File::Temp::tempdir( CLEANUP => 1 );

{
    local $CWD = $dir;

    if ( $opts{download} ) {
        my $ftp = Net::FTP->new( 'elsie.nci.nih.gov', Passive => 1 )
            or die "Cannot connect to elsie.nci.nih.gov: $@";
        $ftp->login()
            or die 'Cannot login: ', $ftp->message;
        $ftp->cwd('/pub')
            or die 'Cannot cwd to /pub: ', $ftp->message;
        $ftp->binary();

        for my $f ( $ftp->ls ) {
            if ( $f =~ /^tz(?:code|data)/ ) {
                print "Getting $f\n";
                $ftp->get($f);

                system( 'tar', 'xzf', $f );

                ($olson_version) = $f =~ /(\d\d\d\d\w)/;
            }
        }

        die "Did not retrieve anything from elsie"
            unless $olson_version;
    }
    else {
        $dir =~ s{/$}{};
        ($olson_version) = $dir =~ m{/([^/]+)$};
    }

    system('make')
        and die "Cannot run make: $!";

    for my $f (
        qw( africa antarctica asia australasia
        europe northamerica pacificnew
        southamerica backward
        )
        ) {
        system( 'sudo', './zic', '-d', '/usr/share/zoneinfo', $f )
            and die "Cannot run zic on $f";
    }
}

{
    system(
        './tools/parse_olson',
        '--clean',
        '--version', $olson_version,
        '--dir',     $dir,
    ) and die "Cannot run parse_olson: $!";

    print "Generating tests from zdump\n";
    system('./tools/tests_from_zdump')
        and die "Cannot run tests_from_zdump: $!";
}