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#!/usr/bin/env perl
use strict;
use warnings;
use autodie qw( :all );
use File::pushd;
use Getopt::Long;
use Net::FTP;
use Path::Class qw( dir tempdir );
sub main {
my %opts = (
download => 1,
tests => 1,
);
GetOptions(
'download!' => \$opts{download},
'dir:s' => \$opts{dir},
'tests!' => \$opts{tests},
);
my $olson_version;
my $dir
= $opts{dir}
? dir( $opts{dir} )
: tempdir( CLEANUP => 1 );
if ( $opts{download} ) {
$olson_version = _download($dir);
}
else {
($olson_version) = $dir =~ m{/([^/]+)$};
}
_compile_tzdata($dir);
_parse_olson( $dir, $olson_version, $opts{tests} );
}
sub _download {
my $pushed = pushd(shift);
my $host = 'ftp.iana.org';
my $ftp = Net::FTP->new( $host, Passive => 1 )
or die "Cannot connect to $host: $@";
$ftp->login()
or die 'Cannot login: ', $ftp->message;
my $dir = '/tz/releases';
$ftp->cwd($dir)
or die "Cannot cwd to $dir: ", $ftp->message;
my @code;
my @data;
for my $file ( $ftp->ls() ) {
next unless $file =~ /tz(code|data)(\d+)(\w+)\.tar\.gz/;
if ( $1 eq 'code' ) {
push @code, [ $file, $2, $3 ];
}
else {
push @data, [ $file, $2, $3 ];
}
}
my $data
= ( sort { $b->[1] <=> $a->[1] or $b->[2] cmp $a->[2] } @data )[0]
->[0];
my $code
= ( sort { $b->[1] <=> $a->[1] or $b->[2] cmp $a->[2] } @code )[0]
->[0];
$ftp->binary();
my $olson_version;
for my $file ( $code, $data ) {
print "Getting $file\n";
$ftp->get($file)
or die "Cannot fetch $file: ", $ftp->message;
system( 'tar', 'xzf', $file );
($olson_version) = $file =~ /(\d\d\d\d\w)/;
die "Did not retrieve anything from elsie"
unless $olson_version;
}
return $olson_version;
}
sub _compile_tzdata {
my $dir = shift;
my $pushed = pushd($dir);
# The CFLAGS bit is necessary because of an issue introduced in 2017c with
# the use of snprintf. This works fine on my machine without the flag but
# blows up on Travis.
system( 'make', 'CFLAGS=-DHAVE_SNPRINTF' )
and die "Cannot run make: $!";
my $target = $dir->subdir('target');
$target->mkpath( 0, 0755 );
my @files = qw(
africa
antarctica
asia
australasia
europe
northamerica
southamerica
etcetera
factory
backward
);
for my $f (@files) {
system( './zic', '-d', $target, $f )
and die "Cannot run zic on $f";
}
# The rdfind and symlinks bits are copied from the Debian tzdata packages
# rules file.
system(
'rdfind',
'-outputname', '/dev/null',
'-makesymlinks', 'true',
'-removeidentinode', 'false',
$target
);
system( qw( symlinks -r -s -c ), $target );
system(qw( sudo rm -fr /usr/share/zoneinfo ));
system( qw( sudo mv ), $target, '/usr/share/zoneinfo' );
system(qw( sudo chown -R root:root /usr/share/zoneinfo ));
}
sub _parse_olson {
my $dir = shift;
my $olson_version = shift;
my $generate_tests = shift;
system(
'./tools/parse_olson',
'--clean',
'--version', $olson_version,
'--dir', $dir,
) and die "Cannot run parse_olson: $!";
if ($generate_tests) {
print "Generating tests from zdump\n";
system('./tools/tests_from_zdump')
and die "Cannot run tests_from_zdump: $!";
}
}
main();
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