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<?php |
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namespace ValueParsers; |
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use DataValues\TimeValue; |
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/** |
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* A parser that accepts various date formats with month precision. Prefers month/year order when |
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* both numbers are valid months, e.g. "12/10" is December 2010. Should be called before |
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* YearTimeParser when you want to accept both formats, because strings like "1 999" may either |
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* represent a month and a year or a year with digit grouping. |
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* |
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* @since 0.8.4 |
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* |
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* @license GPL-2.0+ |
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* @author Addshore |
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* @author Thiemo Kreuz |
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*/ |
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class YearMonthTimeParser extends StringValueParser { |
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const FORMAT_NAME = 'year-month'; |
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/** |
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* @var int[] Array mapping localized month names to month numbers (1 to 12). |
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*/ |
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private $monthNumbers; |
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/** |
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* @var ValueParser |
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*/ |
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private $isoTimestampParser; |
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/** |
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* @var EraParser |
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*/ |
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private $eraParser; |
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/** |
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* @see StringValueParser::__construct |
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* |
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* @param MonthNameProvider $monthNameProvider |
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* @param ParserOptions|null $options |
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* @param EraParser|null $eraParser |
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*/ |
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public function __construct( |
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MonthNameProvider $monthNameProvider, |
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ParserOptions $options = null, |
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EraParser $eraParser = null |
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) { |
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parent::__construct( $options ); |
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$languageCode = $this->getOption( ValueParser::OPT_LANG ); |
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$this->monthNumbers = $monthNameProvider->getMonthNumbers( $languageCode ); |
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$this->isoTimestampParser = new IsoTimestampParser( null, $this->options ); |
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$this->eraParser = $eraParser ?: new EraParser(); |
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} |
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/** |
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* @see StringValueParser::stringParse |
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* |
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* @param string $value |
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* |
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* @throws ParseException |
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* @return TimeValue |
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*/ |
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protected function stringParse( $value ) { |
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$trimmedValue = trim( $value ); |
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list( $sign, $newValue ) = $this->eraParser->parse( $trimmedValue ); |
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if ( $newValue !== $trimmedValue ) { |
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$eraWasSpecified = true; |
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} else { |
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$eraWasSpecified = false; |
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$sign = ''; |
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} |
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// Matches year and month separated by a separator. |
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// \p{L} matches letters outside the ASCII range. |
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$regex = '/^(-?[\d\p{L}]+)\s*?[\/\-\s.,]\s*(-?[\d\p{L}]+)$/u'; |
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if ( !preg_match( $regex, $newValue, $matches ) ) { |
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throw new ParseException( 'Failed to parse year and month', $value, self::FORMAT_NAME ); |
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} |
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list( , $a, $b ) = $matches; |
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// if era was specified, fail on a minus sign |
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$intRegex = $eraWasSpecified ? '/^\d+$/' : '/^-?\d+$/' |
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$aIsInt = preg_match( $intRegex, $a ); |
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$bIsInt = preg_match( $intRegex, $b ); |
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if ( $aIsInt && $bIsInt ) { |
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if ( $this->canBeMonth( $a ) ) { |
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return $this->getTimeFromYearMonth( $sign . $b, $a ); |
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} elseif ( $this->canBeMonth( $b ) ) { |
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return $this->getTimeFromYearMonth( $sign . $a, $b ); |
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} |
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} elseif ( $aIsInt ) { |
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$month = $this->parseMonth( $b ); |
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if ( $month ) { |
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return $this->getTimeFromYearMonth( $sign . $a, $month ); |
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} |
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} elseif ( $bIsInt ) { |
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$month = $this->parseMonth( $a ); |
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if ( $month ) { |
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return $this->getTimeFromYearMonth( $sign . $b, $month ); |
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} |
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} |
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throw new ParseException( 'Failed to parse year and month', $value, self::FORMAT_NAME ); |
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} |
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/** |
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* @param string $month |
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* |
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* @return int|null |
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*/ |
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private function parseMonth( $month ) { |
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foreach ( $this->monthNumbers as $monthName => $i ) { |
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if ( strcasecmp( $monthName, $month ) === 0 ) { |
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return $i; |
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} |
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} |
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return null; |
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} |
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/** |
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* @param string $year |
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* @param string $month as a canonical month number |
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* |
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* @return TimeValue |
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*/ |
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private function getTimeFromYearMonth( $year, $month ) { |
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if ( $year[0] !== '-' && $year[0] !== '+' ) { |
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$year = '+' . $year; |
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} |
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return $this->isoTimestampParser->parse( sprintf( '%s-%02s-00T00:00:00Z', $year, $month ) ); |
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} |
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/** |
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* @param string $value |
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* |
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* @return bool can the given value be a month? |
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*/ |
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private function canBeMonth( $value ) { |
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return $value >= 0 && $value <= 12; |
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} |
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} |
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wmde /
Time
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