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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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* @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 Mättig |
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* |
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* @todo match BCE dates in here |
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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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* @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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*/ |
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public function __construct( |
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MonthNameProvider $monthNameProvider, |
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ParserOptions $options = 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( |
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new CalendarModelParser( $this->options ), |
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$this->options |
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); |
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} |
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/** |
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* Parses the provided string and returns the result. |
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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( $value ) { |
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//Matches Year and month separated by a separator, \p{L} matches letters outside the ASCII range |
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if ( !preg_match( '/^([\d\p{L}]+)\s*[\/\-\s.,]\s*([\d\p{L}]+)$/', trim( $value ), $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 ) = $matches; |
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$aIsInt = preg_match( '/^\d+$/', $a ); |
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$bIsInt = preg_match( '/^\d+$/', $b ); |
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if ( $aIsInt && $bIsInt ) { |
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$parsed = $this->parseYearMonthTwoInts( $a, $b ); |
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if ( $parsed ) { |
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return $parsed; |
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} |
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} |
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if ( $aIsInt || $bIsInt ) { |
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if ( $aIsInt ) { |
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$year = $a; |
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$month = trim( $b ); |
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} else { |
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$year = $b; |
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$month = trim( $a ); |
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} |
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$parsed = $this->parseYearMonth( $year, $month ); |
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if ( $parsed ) { |
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return $parsed; |
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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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* If we have 2 integers parse the date assuming that the larger is the year |
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* unless the smaller is not a 'legal' month value |
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* |
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* @param string|int $a |
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* @param string|int $b |
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* |
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* @return TimeValue|bool |
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*/ |
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private function parseYearMonthTwoInts( $a, $b ) { |
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if ( !preg_match( '/^\d+$/', $a ) || !preg_match( '/^\d+$/', $b ) ) { |
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return false; |
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} |
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if ( !$this->canBeMonth( $a ) && $this->canBeMonth( $b ) ) { |
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return $this->getTimeFromYearMonth( $a, $b ); |
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} elseif ( $this->canBeMonth( $a ) ) { |
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return $this->getTimeFromYearMonth( $b, $a ); |
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} |
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return false; |
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} |
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/** |
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* If we have 1 int and 1 string then try to parse the int as the year and month as the string |
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* Check for both the full name and abbreviations |
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* |
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* @param string|int $year |
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* @param string $month |
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* |
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* @return TimeValue|bool |
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*/ |
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private function parseYearMonth( $year, $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 $this->getTimeFromYearMonth( $year, $i ); |
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} |
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} |
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return false; |
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} |
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/** |
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* @param string $year |
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* @param string $month |
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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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return $this->isoTimestampParser->parse( sprintf( '+%d-%02d-00T00:00:00Z', $year, $month ) ); |
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} |
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/** |
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* @param string|int $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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DataValues /
Time
