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phorge-phorge/resources/timezones/generate-timezone-map.php

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#!/usr/bin/env php
<?php
$root = dirname(dirname(dirname(__FILE__)));
require_once $root.'/scripts/init/init-script.php';
$xml = $root.'/externals/cldr/cldr_windows_timezones.xml';
$xml = Filesystem::readFile($xml);
$xml = new SimpleXMLElement($xml);
$result_map = array();
$ignore = array(
'UTC',
'UTC-11',
'UTC-02',
'UTC-08',
'UTC-09',
'UTC+12',
);
$ignore = array_fuse($ignore);
$zones = $xml->windowsZones->mapTimezones->mapZone;
foreach ($zones as $zone) {
$windows_name = (string)$zone['other'];
$target_name = (string)$zone['type'];
// Ignore the offset-based timezones from the CLDR map, since we handle
// these later.
if (isset($ignore[$windows_name])) {
continue;
}
// We've already seen this timezone so we don't need to add it to the map
// again.
if (isset($result_map[$windows_name])) {
continue;
}
$result_map[$windows_name] = $target_name;
}
asort($result_map);
echo id(new PhutilJSON())
->encodeFormatted($result_map);