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Convert time zone identifiers to/from PHP from/to Windows
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| <?php | |
| /* | |
| * License: MIT | |
| * Author: Michele Locati <[email protected]> | |
| */ | |
| declare(strict_types=1); | |
| set_error_handler( | |
| static function ($errno, $errstr) { | |
| throw new RuntimeException($errstr); | |
| }, | |
| -1 | |
| ); | |
| function getXMLDocument(): DOMDocument | |
| { | |
| $xml = file_get_contents('https://raw.githubusercontent.com/unicode-org/cldr/release-44-1/common/supplemental/windowsZones.xml'); | |
| $doc = new DOMDocument(); | |
| if (!$doc->loadXML($xml)) { | |
| throw new RuntimeException('Failed to load xml'); | |
| } | |
| return $doc; | |
| } | |
| function sortTimeZoneIdentifiers(string $timeZoneA, string $timeZoneB): int | |
| { | |
| $matchesA = []; | |
| $matchesB = []; | |
| preg_match('/^(?<pre>.*?)(?<num>[+\-]?\d+)(?<post>.*?)$/', $timeZoneA, $matchesA); | |
| if ($matchesA === []) { | |
| preg_match('/^(?<pre>.*?)(?<num>[+\-]?\d+)(?<post>.*?)$/', $timeZoneA . '+0', $matchesA); | |
| } | |
| preg_match('/^(?<pre>.*?)(?<num>[+\-]?\d+)(?<post>.*?)$/', $timeZoneB, $matchesB); | |
| if ($matchesB === []) { | |
| preg_match('/^(?<pre>.*?)(?<num>[+\-]?\d+)(?<post>.*?)$/', $timeZoneB . '+0', $matchesB); | |
| } | |
| if ($matchesA['pre'] === $matchesB['pre'] && $matchesA['post'] === $matchesB['post']) { | |
| return (int) $matchesA['num'] - (int) $matchesB['num']; | |
| } | |
| return strcasecmp($timeZoneA, $timeZoneB); | |
| } | |
| function normalizePhpTimeZoneID(string $timeZoneIdentifier): string | |
| { | |
| set_error_handler(static function() {}, -1); | |
| try { | |
| $timeZone = timezone_open($timeZoneIdentifier); | |
| } finally { | |
| restore_error_handler(); | |
| } | |
| return $timeZone instanceof DateTimeZone ? $timeZone->getName() : ''; | |
| } | |
| function buildWindowsToPhp(DOMDocument $doc): array | |
| { | |
| $xpath = new DOMXPath($doc); | |
| $mapZones = $xpath->query('/supplementalData/windowsZones/mapTimezones/mapZone'); | |
| $map = []; | |
| foreach ($mapZones as $mapZone) { | |
| $windowsName = (string) $mapZone->getAttribute('other'); | |
| if ($windowsName === '') { | |
| throw new RuntimeException('Failed to retrieve Windows time zone from XML ' . $doc->saveXML($mapZone)); | |
| } | |
| if (!isset($map[$windowsName])) { | |
| $map[$windowsName] = []; | |
| } | |
| $phpNames = (string) $mapZone->getAttribute('type'); | |
| if ($phpNames === '') { | |
| throw new RuntimeException('Failed to retrieve PHP time zones from ' . $doc->saveXML($phpNames)); | |
| } | |
| foreach (array_unique(preg_split('/\s+/', $phpNames, -1, PREG_SPLIT_NO_EMPTY)) as $phpName) { | |
| $actualPhpName = normalizePhpTimeZoneID($phpName); | |
| if ($actualPhpName === '') { | |
| fwrite(STDERR, "Invalid PHP time zone name: '{$phpName}'\n"); | |
| } elseif (!in_array($actualPhpName, $map[$windowsName], true)) { | |
| $map[$windowsName][] = $actualPhpName; | |
| } | |
| } | |
| } | |
| foreach ($map as $windowsName => $phpNames) { | |
| if ($phpNames === []) { | |
| throw new RuntimeException("No PHP time zone is applicable to the Windows time zone '{$windowsName}'"); | |
| } | |
| } | |
| uksort($map, 'sortTimeZoneIdentifiers'); | |
| return array_map( | |
| static function (array $phpNames): array { | |
| usort($phpNames, 'sortTimeZoneIdentifiers'); | |
| return $phpNames; | |
| }, | |
| $map | |
| ); | |
| } | |
| function buildPhpToWindows(array $windowsToPhp): array | |
| { | |
| $map = []; | |
| foreach ($windowsToPhp as $windows => $phpNames) { | |
| foreach ($phpNames as $phpName) { | |
| if (isset($map[$phpName])) { | |
| throw new RuntimeException("The PHP time zone '{$phpName}' is applicable to more than one Windows time zone"); | |
| } | |
| $map[$phpName] = $windows; | |
| } | |
| } | |
| uksort($map, 'sortTimeZoneIdentifiers'); | |
| return $map; | |
| } | |
| function quote(string $s): string | |
| { | |
| return "'" . addcslashes($s, "'\\") . "'"; | |
| } | |
| $doc = getXMLDocument(); | |
| $windowsToPhp = buildWindowsToPhp($doc); | |
| $phpToWindows = buildPhpToWindows($windowsToPhp); | |
| echo "const WINDOWS_TO_PHP = [\n"; | |
| foreach ($windowsToPhp as $windows => $phps) { | |
| echo ' ', quote($windows), ' => [' . implode(', ', array_map('quote', $phps)), '],', "\n"; | |
| } | |
| echo "\n"; | |
| echo "const PHP_TO_WINDOWS = [\n"; | |
| foreach ($phpToWindows as $php => $windows) { | |
| echo ' ', quote($php), ' => ', quote($windows), ",\n"; | |
| } | |
| echo "];\n"; | |
| echo "\n"; | |
| echo "const PHP_TO_WINDOWS = [\n"; | |
| foreach ($phpToWindows as $php => $windows) { | |
| echo ' ', quote($php), ' => ', quote($windows), ",\n"; | |
| } | |
| echo "];\n"; | |
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