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<?php |
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namespace DataValues; |
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/** |
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* Class representing a time value. |
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* @see https://www.mediawiki.org/wiki/Wikibase/DataModel#Dates_and_times |
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* |
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* @since 0.1 |
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* |
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* @license GPL-2.0+ |
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* @author Jeroen De Dauw < [email protected] > |
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* @author Thiemo Mättig |
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*/ |
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class TimeValue extends DataValueObject { |
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/** |
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* @deprecated since 0.8, use PRECISION_YEAR1G instead |
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*/ |
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const PRECISION_Ga = self::PRECISION_YEAR1G; |
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/** |
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* @deprecated since 0.8, use PRECISION_YEAR100M instead |
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*/ |
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const PRECISION_100Ma = self::PRECISION_YEAR100M; |
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/** |
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* @deprecated since 0.8, use PRECISION_YEAR10M instead |
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*/ |
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const PRECISION_10Ma = self::PRECISION_YEAR10M; |
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/** |
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* @deprecated since 0.8, use PRECISION_YEAR1M instead |
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*/ |
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const PRECISION_Ma = self::PRECISION_YEAR1M; |
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/** |
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* @deprecated since 0.8, use PRECISION_YEAR100K instead |
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*/ |
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const PRECISION_100ka = self::PRECISION_YEAR100K; |
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/** |
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* @deprecated since 0.8, use PRECISION_YEAR10K instead |
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*/ |
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const PRECISION_10ka = self::PRECISION_YEAR10K; |
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/** |
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* @deprecated since 0.8, use PRECISION_YEAR1K instead |
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*/ |
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const PRECISION_ka = self::PRECISION_YEAR1K; |
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/** |
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* @deprecated since 0.8, use PRECISION_YEAR100 instead |
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*/ |
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const PRECISION_100a = self::PRECISION_YEAR100; |
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/** |
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* @deprecated since 0.8, use PRECISION_YEAR10 instead |
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*/ |
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const PRECISION_10a = self::PRECISION_YEAR10; |
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/** |
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* @since 0.8 |
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*/ |
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const PRECISION_YEAR1G = 0; |
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/** |
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* @since 0.8 |
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*/ |
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const PRECISION_YEAR100M = 1; |
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/** |
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* @since 0.8 |
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*/ |
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const PRECISION_YEAR10M = 2; |
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/** |
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* @since 0.8 |
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*/ |
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const PRECISION_YEAR1M = 3; |
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/** |
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* @since 0.8 |
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*/ |
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const PRECISION_YEAR100K = 4; |
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/** |
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* @since 0.8 |
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*/ |
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const PRECISION_YEAR10K = 5; |
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/** |
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* @since 0.8 |
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*/ |
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const PRECISION_YEAR1K = 6; |
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/** |
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* @since 0.8 |
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*/ |
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const PRECISION_YEAR100 = 7; |
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/** |
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* @since 0.8 |
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*/ |
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const PRECISION_YEAR10 = 8; |
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const PRECISION_YEAR = 9; |
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const PRECISION_MONTH = 10; |
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const PRECISION_DAY = 11; |
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const PRECISION_HOUR = 12; |
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const PRECISION_MINUTE = 13; |
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const PRECISION_SECOND = 14; |
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/** |
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* @since 0.7.1 |
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*/ |
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const CALENDAR_GREGORIAN = 'http://www.wikidata.org/entity/Q1985727'; |
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/** |
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* @since 0.7.1 |
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*/ |
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const CALENDAR_JULIAN = 'http://www.wikidata.org/entity/Q1985786'; |
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/** |
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* Timestamp describing a point in time. The actual format depends on the calendar model. |
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* |
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* Gregorian and Julian dates use the same YMD ordered format, resembling ISO 8601, e.g. |
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* +2013-01-01T00:00:00Z. In this format the year is always signed and padded with zero |
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* characters to have between 4 and 16 digits. Month and day can be zero, indicating they are |
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* unknown. The timezone suffix Z is meaningless and must be ignored. Use getTimezone() instead. |
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* |
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* @see $timezone |
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* @see $calendarModel |
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* |
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* @var string |
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*/ |
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private $timestamp; |
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/** |
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* Unit used for the getBefore() and getAfter() values. Use one of the self::PRECISION_... |
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* constants. |
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* |
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* @var int |
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*/ |
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private $precision; |
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/** |
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* If the date is uncertain, how many units after the given time could it be? |
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* The unit is given by the precision. |
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* |
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* @var int Amount |
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*/ |
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private $after; |
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/** |
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* If the date is uncertain, how many units before the given time could it be? |
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* The unit is given by the precision. |
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* |
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* @var int Amount |
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*/ |
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private $before; |
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/** |
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* Time zone information as an offset from UTC in minutes. |
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* |
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* @var int Minutes |
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*/ |
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private $timezone; |
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/** |
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* URI identifying the calendar model. The actual timestamp should be in this calendar model, |
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* but note that there is nothing this class can do to enforce this convention. |
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* |
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* @var string URI |
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*/ |
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private $calendarModel; |
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/** |
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* @since 0.1 |
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* |
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* @param string $timestamp Timestamp in a format resembling ISO 8601. |
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* @param int $timezone Time zone offset from UTC in minutes. |
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* @param int $before Number of units given by the precision. |
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* @param int $after Number of units given by the precision. |
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* @param int $precision One of the self::PRECISION_... constants. |
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* @param string $calendarModel An URI identifying the calendar model. |
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* |
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* @throws IllegalValueException |
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*/ |
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public function __construct( $timestamp, $timezone, $before, $after, $precision, $calendarModel ) { |
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if ( !is_string( $timestamp ) || $timestamp === '' ) { |
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throw new IllegalValueException( '$timestamp must be a non-empty string' ); |
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} |
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if ( !is_int( $timezone ) ) { |
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throw new IllegalValueException( '$timezone must be an integer' ); |
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} elseif ( $timezone < -12 * 3600 || $timezone > 14 * 3600 ) { |
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throw new IllegalValueException( '$timezone out of allowed bounds' ); |
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} |
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if ( !is_int( $before ) || $before < 0 ) { |
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throw new IllegalValueException( '$before must be an unsigned integer' ); |
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} |
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if ( !is_int( $after ) || $after < 0 ) { |
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throw new IllegalValueException( '$after must be an unsigned integer' ); |
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} |
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if ( !is_int( $precision ) ) { |
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throw new IllegalValueException( '$precision must be an integer' ); |
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} elseif ( $precision < self::PRECISION_YEAR1G || $precision > self::PRECISION_SECOND ) { |
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throw new IllegalValueException( '$precision out of allowed bounds' ); |
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} |
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// XXX: Enforce an IRI? Or at least a size limit? |
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if ( !is_string( $calendarModel ) || $calendarModel === '' ) { |
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throw new IllegalValueException( '$calendarModel must be a non-empty string' ); |
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} |
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$this->timestamp = $this->normalizeIsoTimestamp( $timestamp ); |
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$this->timezone = $timezone; |
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$this->before = $before; |
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$this->after = $after; |
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$this->precision = $precision; |
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$this->calendarModel = $calendarModel; |
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} |
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/** |
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* @param string $timestamp |
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* |
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* @throws IllegalValueException |
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* @return string |
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*/ |
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private function normalizeIsoTimestamp( $timestamp ) { |
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if ( !preg_match( |
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'/^([-+])(\d{1,16})-(\d\d)-(\d\d)T(\d\d):(\d\d):(\d\d)Z$/', |
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$timestamp, |
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$matches |
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) ) { |
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throw new IllegalValueException( '$timestamp must resemble ISO 8601, given ' . $timestamp ); |
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} |
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list( , $sign, $year, $month, $day, $hour, $minute, $second ) = $matches; |
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if ( $month > 12 ) { |
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throw new IllegalValueException( 'Month out of allowed bounds' ); |
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} elseif ( $day > 31 ) { |
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throw new IllegalValueException( 'Day out of allowed bounds' ); |
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} elseif ( $hour > 23 ) { |
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throw new IllegalValueException( 'Hour out of allowed bounds' ); |
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} elseif ( $minute > 59 ) { |
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throw new IllegalValueException( 'Minute out of allowed bounds' ); |
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} elseif ( $second > 61 ) { |
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throw new IllegalValueException( 'Second out of allowed bounds' ); |
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} |
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if ( $month < 1 && $day > 0 ) { |
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throw new IllegalValueException( 'Can not have a day with no month' ); |
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} |
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if ( $day < 1 && ( $hour > 0 || $minute > 0 || $second > 0 ) ) { |
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throw new IllegalValueException( 'Can not have hour, minute or second with no day' ); |
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} |
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// Warning, never cast the year to integer to not run into 32-bit integer overflows! |
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$year = ltrim( $year, '0' ); |
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$year = str_pad( $year, 4, '0', STR_PAD_LEFT ); |
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return $sign . $year . '-' . $month . '-' . $day . 'T' . $hour . ':' . $minute .':' . $second . 'Z'; |
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} |
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/** |
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* @see $timestamp |
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* |
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* @since 0.1 |
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* |
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* @return string |
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*/ |
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public function getTime() { |
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return $this->timestamp; |
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} |
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/** |
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* @see $calendarModel |
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* |
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* @since 0.1 |
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* |
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* @return string URI |
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*/ |
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public function getCalendarModel() { |
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return $this->calendarModel; |
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} |
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/** |
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* @see $before |
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* |
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* @since 0.1 |
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* |
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* @return int Amount |
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*/ |
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public function getBefore() { |
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return $this->before; |
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} |
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/** |
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* @see $after |
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* |
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* @since 0.1 |
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* |
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* @return int Amount |
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*/ |
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public function getAfter() { |
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return $this->after; |
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} |
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/** |
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* @see $precision |
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* |
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* @since 0.1 |
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* |
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* @return int one of the self::PRECISION_... constants |
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*/ |
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public function getPrecision() { |
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return $this->precision; |
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} |
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/** |
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* @see $timezone |
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* |
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* @since 0.1 |
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* |
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* @return int Minutes |
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*/ |
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public function getTimezone() { |
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return $this->timezone; |
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} |
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/** |
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* @see DataValue::getType |
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* |
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* @since 0.1 |
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* |
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* @return string |
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*/ |
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public static function getType() { |
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return 'time'; |
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} |
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/** |
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* @see DataValue::getSortKey |
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* |
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* @since 0.1 |
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* |
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* @return string |
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*/ |
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public function getSortKey() { |
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return $this->timestamp; |
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} |
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/** |
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* @see DataValue::getValue |
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* |
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* @since 0.1 |
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* |
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* @return TimeValue |
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*/ |
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public function getValue() { |
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return $this; |
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} |
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/** |
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* @see Serializable::serialize |
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* |
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* @since 0.1 |
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* |
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* @return string |
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*/ |
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public function serialize() { |
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return json_encode( array_values( $this->getArrayValue() ) ); |
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} |
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|
382
|
|
|
/** |
383
|
|
|
* @see Serializable::unserialize |
384
|
|
|
* |
385
|
|
|
* @since 0.1 |
386
|
|
|
* |
387
|
|
|
* @param string $value |
388
|
|
|
* |
389
|
|
|
* @throws IllegalValueException |
390
|
|
|
*/ |
391
|
|
|
public function unserialize( $value ) { |
392
|
|
|
list( $timestamp, $timezone, $before, $after, $precision, $calendarModel ) = json_decode( $value ); |
393
|
|
|
$this->__construct( $timestamp, $timezone, $before, $after, $precision, $calendarModel ); |
394
|
|
|
} |
395
|
|
|
|
396
|
|
|
/** |
397
|
|
|
* @see DataValue::getArrayValue |
398
|
|
|
* |
399
|
|
|
* @since 0.1 |
400
|
|
|
* |
401
|
|
|
* @return array |
402
|
|
|
*/ |
403
|
|
|
public function getArrayValue() { |
404
|
|
|
return array( |
405
|
|
|
'time' => $this->timestamp, |
406
|
|
|
'timezone' => $this->timezone, |
407
|
|
|
'before' => $this->before, |
408
|
|
|
'after' => $this->after, |
409
|
|
|
'precision' => $this->precision, |
410
|
|
|
'calendarmodel' => $this->calendarModel, |
411
|
|
|
); |
412
|
|
|
} |
413
|
|
|
|
414
|
|
|
/** |
415
|
|
|
* Constructs a new instance of the DataValue from the provided data. |
416
|
|
|
* This can round-trip with @see getArrayValue |
417
|
|
|
* |
418
|
|
|
* @since 0.1 |
419
|
|
|
* |
420
|
|
|
* @param mixed $data |
421
|
|
|
* |
422
|
|
|
* @return TimeValue |
423
|
|
|
* @throws IllegalValueException |
424
|
|
|
*/ |
425
|
|
|
public static function newFromArray( $data ) { |
426
|
|
|
self::requireArrayFields( $data, array( 'time', 'timezone', 'before', 'after', 'precision', 'calendarmodel' ) ); |
427
|
|
|
|
428
|
|
|
return new static( |
429
|
|
|
$data['time'], |
430
|
|
|
$data['timezone'], |
431
|
|
|
$data['before'], |
432
|
|
|
$data['after'], |
433
|
|
|
$data['precision'], |
434
|
|
|
$data['calendarmodel'] |
435
|
|
|
); |
436
|
|
|
} |
437
|
|
|
|
438
|
|
|
public function __toString() { |
439
|
|
|
return $this->timestamp; |
440
|
|
|
} |
441
|
|
|
|
442
|
|
|
} |
443
|
|
|
|