astrognome/data/geonames/geonames_process.pl

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Perl
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#! /usr/bin/perl -w
use strict;
use IO::File;
use XML::Writer;
my %time_zones = ();
my %countries = ();
open(TIMEZONES, 'timeZones.txt') or die("Cannot open timeZones.txt: $!\n");
while (<TIMEZONES>) {
my ($country_code, $timezone_id, $gmt_offset_january, $gmt_offset_july, $gmt_offset_raw) = split(/\t/, $_);
next if ($country_code !~ /^[A-Z]{2}$/);
$time_zones{$timezone_id} = {offset => $gmt_offset_january, dst_offset => $gmt_offset_july};
}
close(TIMEZONES);
my $xml_file = IO::File->new('>geodata.xml');
my $writer = XML::Writer->new(OUTPUT => $xml_file, NEWLINES => 0);
$writer->xmlDecl('utf-8');
$writer->startTag('geodata');
$writer->startTag('countries');
open(COUNTRIES, 'countryInfo.txt') or die("Cannot open countryInfo.txt: $!\n");
while (<COUNTRIES>) {
my ($country_code, $iso3, $iso_numeric, $fips, $name, $capital, $area, $population, $continent, $tld, $currency_code, $currency_name, $phone, $postal_code_format, $postal_code_regex, $languages, $geonameid, $neighbours, $equivalent_fips_code) = split(/\t/, $_);
next if ($country_code !~ /^[A-Z]{2}$/);
$writer->emptyTag('c',
'n' => $name,
'c' => $country_code,
);
if ($country_code =~ /^[A-Z]{2}$/) {
$countries{$country_code} = $name;
}
}
close(COUNTRIES);
$writer->endTag('countries');
$writer->startTag('places');
open(GEONAMES, "cities.txt") or die("Cannot open cities.txt: $!\n");
while (<GEONAMES>) {
chomp($_);
my ($country_code, $name, $latitude, $longitude, $elevation, $timezone) = split(/\t/, $_);
if (!exists($countries{$country_code})) {
print "Unknown country code: $country_code\n";
next;
}
if (!exists($time_zones{$timezone})) {
print "Unknown time zone: $timezone\n";
next;
}
$writer->emptyTag('p',
'n' => $name,
'lat' => $latitude,
'lon' => $longitude,
'alt' => $elevation,
'c' => $country_code,
'tzo' => $time_zones{$timezone}->{offset},
'tzd' => $time_zones{$timezone}->{dst_offset}
);
print $., "\n" if ($. % 19083 == 0);
}
$writer->endTag('places');
$writer->endTag('geodata');
$writer->end();
$xml_file->close();
close GEONAMES;