Viewing file:  MonthTransformer.php (3.05 KB) -rw-r--r--
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<?php
/*
* This file is part of the Symfony package.
*
* (c) Fabien Potencier <fabien@symfony.com>
*
* For the full copyright and license information, please view the LICENSE
* file that was distributed with this source code.
*/
namespace Symfony\Polyfill\Intl\Icu\DateFormat;
/**
* Parser and formatter for month format.
*
* @author Igor Wiedler <igor@wiedler.ch>
*
* @internal
*/
class MonthTransformer extends Transformer
{
protected static $months = [
'January',
'February',
'March',
'April',
'May',
'June',
'July',
'August',
'September',
'October',
'November',
'December',
];
/**
* Short months names (first 3 letters).
*/
protected static $shortMonths = [];
/**
* Flipped $months array, $name => $index.
*/
protected static $flippedMonths = [];
/**
* Flipped $shortMonths array, $name => $index.
*/
protected static $flippedShortMonths = [];
public function __construct()
{
if (0 === \count(self::$shortMonths)) {
self::$shortMonths = array_map(function ($month) {
return substr($month, 0, 3);
}, self::$months);
self::$flippedMonths = array_flip(self::$months);
self::$flippedShortMonths = array_flip(self::$shortMonths);
}
}
public function format(\DateTime $dateTime, int $length): string
{
$matchLengthMap = [
1 => 'n',
2 => 'm',
3 => 'M',
4 => 'F',
];
if (isset($matchLengthMap[$length])) {
return $dateTime->format($matchLengthMap[$length]);
}
if (5 === $length) {
return substr($dateTime->format('M'), 0, 1);
}
return $this->padLeft($dateTime->format('m'), $length);
}
public function getReverseMatchingRegExp(int $length): string
{
switch ($length) {
case 1:
$regExp = '\d{1,2}';
break;
case 3:
$regExp = implode('|', self::$shortMonths);
break;
case 4:
$regExp = implode('|', self::$months);
break;
case 5:
$regExp = '[JFMASOND]';
break;
default:
$regExp = '\d{1,'.$length.'}';
break;
}
return $regExp;
}
public function extractDateOptions(string $matched, int $length): array
{
if (!is_numeric($matched)) {
if (3 === $length) {
$matched = self::$flippedShortMonths[$matched] + 1;
} elseif (4 === $length) {
$matched = self::$flippedMonths[$matched] + 1;
} elseif (5 === $length) {
// IntlDateFormatter::parse() always returns false for MMMMM or LLLLL
$matched = false;
}
} else {
$matched = (int) $matched;
}
return [
'month' => $matched,
];
}
}
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