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Diffstat (limited to 'vendor/symfony/intl/Symfony/Component/Intl/DateFormatter/DateFormat/TimeZoneTransformer.php')
-rw-r--r-- | vendor/symfony/intl/Symfony/Component/Intl/DateFormatter/DateFormat/TimeZoneTransformer.php | 99 |
1 files changed, 99 insertions, 0 deletions
diff --git a/vendor/symfony/intl/Symfony/Component/Intl/DateFormatter/DateFormat/TimeZoneTransformer.php b/vendor/symfony/intl/Symfony/Component/Intl/DateFormatter/DateFormat/TimeZoneTransformer.php new file mode 100644 index 00000000..7d74bd36 --- /dev/null +++ b/vendor/symfony/intl/Symfony/Component/Intl/DateFormatter/DateFormat/TimeZoneTransformer.php | |||
@@ -0,0 +1,99 @@ | |||
1 | <?php | ||
2 | |||
3 | /* | ||
4 | * This file is part of the Symfony package. | ||
5 | * | ||
6 | * (c) Fabien Potencier <fabien@symfony.com> | ||
7 | * | ||
8 | * For the full copyright and license information, please view the LICENSE | ||
9 | * file that was distributed with this source code. | ||
10 | */ | ||
11 | |||
12 | namespace Symfony\Component\Intl\DateFormatter\DateFormat; | ||
13 | |||
14 | use Symfony\Component\Intl\Exception\NotImplementedException; | ||
15 | |||
16 | /** | ||
17 | * Parser and formatter for time zone format | ||
18 | * | ||
19 | * @author Igor Wiedler <igor@wiedler.ch> | ||
20 | */ | ||
21 | class TimeZoneTransformer extends Transformer | ||
22 | { | ||
23 | /** | ||
24 | * {@inheritDoc} | ||
25 | * | ||
26 | * @throws NotImplementedException When time zone is different than UTC or GMT (Etc/GMT) | ||
27 | */ | ||
28 | public function format(\DateTime $dateTime, $length) | ||
29 | { | ||
30 | $timeZone = substr($dateTime->getTimezone()->getName(), 0, 3); | ||
31 | |||
32 | if (!in_array($timeZone, array('Etc', 'UTC'))) { | ||
33 | throw new NotImplementedException('Time zone different than GMT or UTC is not supported as a formatting output.'); | ||
34 | } | ||
35 | |||
36 | // From ICU >= 4.8, the zero offset is not more used, example: GMT instead of GMT+00:00 | ||
37 | $format = (0 !== (int) $dateTime->format('O')) ? '\G\M\TP' : '\G\M\T'; | ||
38 | |||
39 | return $dateTime->format($format); | ||
40 | } | ||
41 | |||
42 | /** | ||
43 | * {@inheritDoc} | ||
44 | */ | ||
45 | public function getReverseMatchingRegExp($length) | ||
46 | { | ||
47 | return 'GMT[+-]\d{2}:?\d{2}'; | ||
48 | } | ||
49 | |||
50 | /** | ||
51 | * {@inheritDoc} | ||
52 | */ | ||
53 | public function extractDateOptions($matched, $length) | ||
54 | { | ||
55 | return array( | ||
56 | 'timezone' => self::getEtcTimeZoneId($matched) | ||
57 | ); | ||
58 | } | ||
59 | |||
60 | /** | ||
61 | * Get an Etc/GMT timezone identifier for the specified timezone | ||
62 | * | ||
63 | * The PHP documentation for timezones states to not use the 'Other' time zones because them exists | ||
64 | * "for backwards compatibility". However all Etc/GMT time zones are in the tz database 'etcetera' file, | ||
65 | * which indicates they are not deprecated (neither are old names). | ||
66 | * | ||
67 | * Only GMT, Etc/Universal, Etc/Zulu, Etc/Greenwich, Etc/GMT-0, Etc/GMT+0 and Etc/GMT0 are old names and | ||
68 | * are linked to Etc/GMT or Etc/UTC. | ||
69 | * | ||
70 | * @param string $formattedTimeZone A GMT timezone string (GMT-03:00, e.g.) | ||
71 | * | ||
72 | * @return string A timezone identifier | ||
73 | * | ||
74 | * @see http://php.net/manual/en/timezones.others.php | ||
75 | * @see http://www.twinsun.com/tz/tz-link.htm | ||
76 | * | ||
77 | * @throws NotImplementedException When the GMT time zone have minutes offset different than zero | ||
78 | * @throws \InvalidArgumentException When the value can not be matched with pattern | ||
79 | */ | ||
80 | public static function getEtcTimeZoneId($formattedTimeZone) | ||
81 | { | ||
82 | if (preg_match('/GMT(?P<signal>[+-])(?P<hours>\d{2}):?(?P<minutes>\d{2})/', $formattedTimeZone, $matches)) { | ||
83 | $hours = (int) $matches['hours']; | ||
84 | $minutes = (int) $matches['minutes']; | ||
85 | $signal = $matches['signal'] == '-' ? '+' : '-'; | ||
86 | |||
87 | if (0 < $minutes) { | ||
88 | throw new NotImplementedException(sprintf( | ||
89 | 'It is not possible to use a GMT time zone with minutes offset different than zero (0). GMT time zone tried: %s.', | ||
90 | $formattedTimeZone | ||
91 | )); | ||
92 | } | ||
93 | |||
94 | return 'Etc/GMT'.($hours !== 0 ? $signal.$hours : ''); | ||
95 | } | ||
96 | |||
97 | throw new \InvalidArgumentException('The GMT time zone \'%s\' does not match with the supported formats GMT[+-]HH:MM or GMT[+-]HHMM.'); | ||
98 | } | ||
99 | } | ||