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| <?php | |
| namespace Popy\Calendar\Parser\ResultMapper; | |
| use DateTimeZone; | |
| use Popy\Calendar\Parser\DateLexerResult; | |
| use Popy\Calendar\ValueObject\TimeOffset; | |
| use Popy\Calendar\Parser\ResultMapperInterface; | |
| use Popy\Calendar\ValueObject\DateRepresentationInterface; | |
| /** | |
| * Maps standard format symbols to DateRepresentationInterface fields. | |
| */ | |
| class StandardDate implements ResultMapperInterface | |
| { | |
| /** | |
| * @inheritDoc | |
| */ | |
| public function map(DateLexerResult $parts, DateRepresentationInterface $date) | |
| { | |
| $offset = $this->determineOffset($parts, $date->getOffset()); | |
| return $date | |
| // SI Units | |
| // U Seconds since the Unix Epoch (January 1 1970 00:00:00 GMT) | |
| // u Microseconds | |
| ->withUnixTime($parts->get('U')) | |
| ->withUnixMicroTime($parts->get('u')) | |
| // Offset & timezone | |
| ->withOffset($offset) | |
| ->withTimezone($this->determineTimezone( | |
| $parts, | |
| $offset, | |
| $date->getTimezone() | |
| )) | |
| ; | |
| } | |
| /** | |
| * Determine date's offset value/dst/abbrevaition from lexer result, | |
| * overriding only if a value is found. | |
| * | |
| * @param DateLexerResult $parts Lexer result. | |
| * @param TimeOffset $offset Current date offset. | |
| * | |
| * @return TimeOffset | |
| */ | |
| protected function determineOffset(DateLexerResult $parts, TimeOffset $offset) | |
| { | |
| // Z Timezone offset in seconds. | |
| if (null !== $value = $parts->get('Z')) { | |
| $value = (int)$value; | |
| } elseif (null !== $o = $parts->getFirst('O', 'P')) { | |
| // O Difference to Greenwich time (GMT) in hours Example: +0200 | |
| // P Difference to Greenwich time (GMT) with colon between hours and minutes | |
| $o = str_replace(':', '', $o); | |
| $sign = substr($o, 0, 1); | |
| $hours = (int)substr($o, 1, 2); | |
| $minutes = (int)substr($o, 3, 2); | |
| $o = $hours * 60 + $minutes; | |
| $o = $o * 60; | |
| if ($sign === '-') { | |
| $o = -$o; | |
| } | |
| $value = $o; | |
| } | |
| if (null !== $value) { | |
| $offset = $offset->withValue($value); | |
| } | |
| // I (capital i) Whether or not the date is in daylight saving time | |
| if (null !== $t = $parts->get('I')) { | |
| $offset = $offset->withDst($t); | |
| } | |
| // T Timezone abbreviation Examples: EST, MDT ... | |
| if (null !== $t = $parts->get('T')) { | |
| $offset = $offset->withAbbreviation($t); | |
| } | |
| return $offset; | |
| } | |
| /** | |
| * Determine date's timezone. If an offset has been found, Timezone has | |
| * no effect on the date parsing, but will have on the date display. | |
| * | |
| * @param DateLexerResult $parts Date lexer results. | |
| * @param integer|null $offset Date offset if it has been found. | |
| * @param DateTimeZone $inputTz Default timezone if any. | |
| * | |
| * @return DateTimeZone | |
| */ | |
| protected function determineTimezone(DateLexerResult $parts, TimeOffset $offset, DateTimeZone $inputTz) | |
| { | |
| // e Timezone identifier (added in PHP 5.1.0) Examples: UTC, GMT, Atlantic/Azores | |
| // O Difference to Greenwich time (GMT) in hours Example: +0200 | |
| // P Difference to Greenwich time (GMT) with colon between hours and minutes (added in PHP 5.1.3) Example: +02:00 | |
| if (null !== $tz = $parts->getFirst('e', 'O', 'P')) { | |
| return new DateTimeZone($tz); | |
| } | |
| // Create a fixed timezone matching the offset. | |
| if (null !== $tz = $offset->buildTimeZone()) { | |
| return $tz; | |
| } | |
| if (null !== $inputTz) { | |
| return $inputTz; | |
| } | |
| // Fallback. | |
| return new DateTimeZone(date_default_timezone_get()); | |
| } | |
| } |