/**
* Finds the proper locale based on the input
* Checks if it exists, degrades it when necessary
* Detects registry locale and when all fails tries to detect a automatic locale
* Returns the found locale as string
*
* @param string $locale
* @throws Zend_Locale_Exception When the given locale is no locale or the autodetection fails
* @return string
*/
public static function findLocale($locale = null)
{
if ($locale === null) {
if (Registry::isRegistered('Locale')) {
$locale = Registry::get('Locale');
}
}
if ($locale === null) {
$locale = new Locale();
}
if (!Locale::isLocale($locale, true, false)) {
if (!Locale::isLocale($locale, false, false)) {
$locale = Locale::getLocaleToTerritory($locale);
if (empty($locale)) {
throw new Exception("The locale '{$locale}' is no known locale");
}
} else {
$locale = new Locale($locale);
}
}
$locale = self::_prepareLocale($locale);
return $locale;
}
/**
* Internal function for checking the locale
*
* @param string|Zend_Locale $locale Locale to check
* @return string
*/
private static function _checkLocale($locale)
{
if (empty($locale)) {
$locale = new Locale();
}
if (!Locale::isLocale((string) $locale, null, false)) {
throw new Exception("Locale (" . (string) $locale . ") is a unknown locale");
}
return (string) $locale;
}
public static function isDate($date, $format = null, $locale = null)
{
if (!is_string($date) && !is_numeric($date) && !$date instanceof Zend_Date && !is_array($date)) {
return false;
}
if ($format !== null && $format != 'ee' && $format != 'ss' && $format != 'GG' && $format != 'MM' && $format != 'EE' && $format != 'TT' && Locale\Locale::isLocale($format, null, false)) {
$locale = $format;
$format = null;
}
$locale = Locale\Locale::findLocale($locale);
if ($format === null) {
$format = Locale\Format::getDateFormat($locale);
} else {
if (self::$_options['format_type'] == 'php' && !defined($format)) {
$format = Locale\Format::convertPhpToIsoFormat($format);
}
}
$format = self::_getLocalizedToken($format, $locale);
if (!is_array($date)) {
try {
$parsed = Locale\Format::getDate($date, array('locale' => $locale, 'date_format' => $format, 'format_type' => 'iso', 'fix_date' => false));
} catch (Exception $e) {
// Date can not be parsed
return false;
}
} else {
$parsed = $date;
}
if ((strpos($format, 'Y') !== false or strpos($format, 'y') !== false) and !isset($parsed['year'])) {
// Year expected but not found
return false;
}
if (strpos($format, 'M') !== false and !isset($parsed['month'])) {
// Month expected but not found
return false;
}
if (strpos($format, 'd') !== false and !isset($parsed['day'])) {
// Day expected but not found
return false;
}
if ((strpos($format, 'H') !== false or strpos($format, 'h') !== false) and !isset($parsed['hour'])) {
// Hour expected but not found
return false;
}
if (strpos($format, 'm') !== false and !isset($parsed['minute'])) {
// Minute expected but not found
return false;
}
if (strpos($format, 's') !== false and !isset($parsed['second'])) {
// Second expected but not found
return false;
}
// Set not given dateparts
if (isset($parsed['hour']) === false) {
$parsed['hour'] = 12;
}
if (isset($parsed['minute']) === false) {
$parsed['minute'] = 0;
}
if (isset($parsed['second']) === false) {
$parsed['second'] = 0;
}
if (isset($parsed['month']) === false) {
$parsed['month'] = 1;
}
if (isset($parsed['day']) === false) {
$parsed['day'] = 1;
}
if (isset($parsed['year']) === false) {
$parsed['year'] = 1970;
}
if (self::isYearLeapYear($parsed['year'])) {
$parsed['year'] = 1972;
} else {
$parsed['year'] = 1971;
}
$date = new self($parsed, null, $locale);
$timestamp = $date->mktime($parsed['hour'], $parsed['minute'], $parsed['second'], $parsed['month'], $parsed['day'], $parsed['year']);
if ($parsed['year'] != $date->date('Y', $timestamp)) {
// Given year differs from parsed year
return false;
}
if ($parsed['month'] != $date->date('n', $timestamp)) {
// Given month differs from parsed month
return false;
}
if ($parsed['day'] != $date->date('j', $timestamp)) {
// Given day differs from parsed day
return false;
}
if ($parsed['hour'] != $date->date('G', $timestamp)) {
// Given hour differs from parsed hour
return false;
}
if ($parsed['minute'] != $date->date('i', $timestamp)) {
// Given minute differs from parsed minute
return false;
}
if ($parsed['second'] != $date->date('s', $timestamp)) {
// Given second differs from parsed second
return false;
}
return true;
}
