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<?php |
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/** |
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* Create iCalendar exports |
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* @file |
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* @ingroup SemanticResultFormats |
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*/ |
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/** |
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* Printer class for creating iCalendar exports |
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* |
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* @author Markus Krötzsch |
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* @author Denny Vrandecic |
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* @author Jeroen De Dauw |
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* |
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* @ingroup SemanticResultFormats |
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*/ |
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class SRFiCalendar extends SMWExportPrinter { |
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protected $m_title; |
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protected $m_description; |
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protected $m_timezones; |
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protected function handleParameters( array $params, $outputmode ) { |
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parent::handleParameters( $params, $outputmode ); |
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$this->m_title = trim( $params['title'] ); |
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$this->m_description = trim( $params['description'] ); |
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} |
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/** |
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* @see SMWIExportPrinter::getMimeType |
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* |
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* @since 1.8 |
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* |
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* @param SMWQueryResult $queryResult |
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* |
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* @return string |
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*/ |
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public function getMimeType( SMWQueryResult $queryResult ) { |
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return 'text/calendar'; |
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} |
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/** |
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* @see SMWIExportPrinter::getFileName |
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* |
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* @since 1.8 |
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* |
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* @param SMWQueryResult $queryResult |
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* |
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* @return string|boolean |
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*/ |
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public function getFileName( SMWQueryResult $queryResult ) { |
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if ( $this->m_title != '' ) { |
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return str_replace( ' ', '_', $this->m_title ) . '.ics'; |
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} else { |
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return 'iCalendar.ics'; |
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} |
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} |
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public function getQueryMode( $context ) { |
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return ( $context == SMWQueryProcessor::SPECIAL_PAGE ) ? SMWQuery::MODE_INSTANCES : SMWQuery::MODE_NONE; |
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} |
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public function getName() { |
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return wfMessage( 'srf_printername_icalendar' )->text(); |
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} |
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protected function getResultText( SMWQueryResult $res, $outputmode ) { |
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return $outputmode == SMW_OUTPUT_FILE ? $this->getIcal( $res ) : $this->getIcalLink( $res, $outputmode ); |
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} |
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/** |
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* Returns the query result in iCal. |
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* |
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* @since 1.5.2 |
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* |
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* @param SMWQueryResult $res |
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* |
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* @return string |
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*/ |
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protected function getIcal( SMWQueryResult $res ) { |
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global $wgSRFTimezoneTransitions; |
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$this->m_timezones = new SRFTimezones(); |
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$result = ''; |
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if ( $this->m_title == '' ) { |
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global $wgSitename; |
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$this->m_title = $wgSitename; |
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} |
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$result .= "BEGIN:VCALENDAR\r\n"; |
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$result .= "PRODID:-//SMW Project//Semantic Result Formats\r\n"; |
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$result .= "VERSION:2.0\r\n"; |
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$result .= "METHOD:PUBLISH\r\n"; |
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$result .= "X-WR-CALNAME:" . $this->m_title . "\r\n"; |
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if ( $this->m_description !== '' ) { |
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$result .= "X-WR-CALDESC:" . $this->m_description . "\r\n"; |
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} |
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$events = ''; |
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$row = $res->getNext(); |
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while ( $row !== false ) { |
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$events .= $this->getIcalForItem( $row ); |
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$row = $res->getNext(); |
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} |
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$this->m_timezones->calcTransitions(); |
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$result .= $this->m_timezones->getIcalForTimezone(); |
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$result .= $events; |
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$result .= "END:VCALENDAR\r\n"; |
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return $result; |
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} |
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/** |
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* Returns html for a link to a query that returns the iCal. |
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* |
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* @since 1.5.2 |
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* |
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* @param SMWQueryResult $res |
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* @param $outputmode |
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* |
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* @return string |
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*/ |
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protected function getIcalLink( SMWQueryResult $res, $outputmode ) { |
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if ( $this->getSearchLabel( $outputmode ) ) { |
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$label = $this->getSearchLabel( $outputmode ); |
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} else { |
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$label = wfMessage( 'srf_icalendar_link' )->inContentLanguage()->text(); |
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} |
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$link = $res->getQueryLink( $label ); |
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$link->setParameter( 'icalendar', 'format' ); |
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if ( $this->m_title !== '' ) { |
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$link->setParameter( $this->m_title, 'title' ); |
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} |
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if ( $this->m_description !== '' ) { |
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$link->setParameter( $this->m_description, 'description' ); |
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} |
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if ( array_key_exists( 'limit', $this->params ) ) { |
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$link->setParameter( $this->params['limit'], 'limit' ); |
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} else { // use a reasonable default limit |
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$link->setParameter( 20, 'limit' ); |
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} |
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// yes, our code can be viewed as HTML if requested, no more parsing needed |
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$this->isHTML = ( $outputmode == SMW_OUTPUT_HTML ); |
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return $link->getText( $outputmode, $this->mLinker ); |
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} |
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/** |
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* Returns the iCal for a single item. |
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* |
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* @since 1.5.2 |
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* |
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* @param array $row |
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* |
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* @return string |
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*/ |
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protected function getIcalForItem( array $row ) { |
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$result = ''; |
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$wikipage = $row[0]->getResultSubject(); // get the object |
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$wikipage = SMWDataValueFactory::newDataItemValue( $wikipage, null ); |
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$params = [ |
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'summary' => $wikipage->getShortWikiText() |
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]; |
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$from = null; |
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$to = null; |
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foreach ( $row as /* SMWResultArray */ $field ) { |
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// later we may add more things like a generic |
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// mechanism to add whatever you want :) |
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// could include funny things like geo, description etc. though |
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$req = $field->getPrintRequest(); |
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$label = strtolower( $req->getLabel() ); |
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switch ( $label ) { |
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case 'start': case 'end': |
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if ( $req->getTypeID() == '_dat' ) { |
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$dataValue = $field->getNextDataValue(); |
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if ( $dataValue === false ) { |
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unset( $params[$label] ); |
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} |
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else { |
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$params[$label] = $this->parsedate( $dataValue, $label == 'end' ); |
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$timestamp = strtotime( $params[$label] ); |
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if ( $from === null || $timestamp < $from ) |
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$from = $timestamp; |
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if ( $to === null || $timestamp > $to ) |
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$to = $timestamp; |
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} |
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} |
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break; |
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case 'location': case 'description': case 'summary': |
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$value = $field->getNextDataValue(); |
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if ( $value !== false ) { |
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$params[$label] = $value->getShortWikiText(); |
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} |
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break; |
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} |
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} |
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$this->m_timezones->updateRange( $from, $to ); |
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$title = $wikipage->getTitle(); |
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$article = new Article( $title ); |
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$url = $title->getFullURL(); |
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$result .= "BEGIN:VEVENT\r\n"; |
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$result .= "SUMMARY:" . $this->escapeICalendarText( $params['summary'] ) . "\r\n"; |
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$result .= "URL:$url\r\n"; |
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$result .= "UID:$url\r\n"; |
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if ( array_key_exists( 'start', $params ) ) $result .= "DTSTART:" . $params['start'] . "\r\n"; |
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if ( array_key_exists( 'end', $params ) ) $result .= "DTEND:" . $params['end'] . "\r\n"; |
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if ( array_key_exists( 'location', $params ) ) { |
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$result .= "LOCATION:" . $this->escapeICalendarText( $params['location'] ) . "\r\n"; |
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} |
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if ( array_key_exists( 'description', $params ) ) { |
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$result .= "DESCRIPTION:" . $this->escapeICalendarText( $params['description'] ) . "\r\n"; |
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} |
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$t = strtotime( str_replace( 'T', ' ', $article->getTimestamp() ) ); |
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$result .= "DTSTAMP:" . date( "Ymd", $t ) . "T" . date( "His", $t ) . "\r\n"; |
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$result .= "SEQUENCE:" . $title->getLatestRevID() . "\r\n"; |
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$result .= "END:VEVENT\r\n"; |
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return $result; |
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} |
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/** |
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* Extract a date string formatted for iCalendar from a SMWTimeValue object. |
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*/ |
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static private function parsedate( SMWTimeValue $dv, $isend = false ) { |
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$year = $dv->getYear(); |
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if ( ( $year > 9999 ) || ( $year < -9998 ) ) return ''; // ISO range is limited to four digits |
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$year = number_format( $year, 0, '.', '' ); |
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$time = str_replace( ':', '', $dv->getTimeString( false ) ); |
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if ( ( $time == false ) && ( $isend ) ) { // increment by one day, compute date to cover leap years etc. |
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$dv = SMWDataValueFactory::newTypeIDValue( '_dat', $dv->getWikiValue() . 'T00:00:00-24:00' ); |
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} |
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$month = $dv->getMonth(); |
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if ( strlen( $month ) == 1 ) $month = '0' . $month; |
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$day = $dv->getDay(); |
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if ( strlen( $day ) == 1 ) $day = '0' . $day; |
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$result = $year . $month . $day; |
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if ( $time != false ) $result .= "T$time"; |
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return $result; |
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} |
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/** |
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* Implements esaping of special characters for iCalendar properties of type TEXT. This is defined |
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* in RFC2445 Section 4.3.11. |
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*/ |
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static private function escapeICalendarText( $text ) { |
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// Note that \\ is a PHP escaped single \ here |
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return str_replace( [ "\\", "\n", ";", "," ], [ "\\\\", "\\n", "\\;", "\\," ], $text ); |
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} |
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/** |
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* @see SMWResultPrinter::getParamDefinitions |
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* |
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* @since 1.8 |
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* |
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* @param $definitions array of IParamDefinition |
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* |
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* @return array of IParamDefinition|array |
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*/ |
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public function getParamDefinitions( array $definitions ) { |
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$params = parent::getParamDefinitions( $definitions ); |
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$params['title'] = [ |
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'default' => '', |
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'message' => 'srf_paramdesc_icalendartitle', |
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]; |
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$params['description'] = [ |
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'default' => '', |
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'message' => 'srf_paramdesc_icalendardescription', |
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]; |
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return $params; |
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} |
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} |
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It seems like the type of the argument is not accepted by the function/method which you are calling.
In some cases, in particular if PHP’s automatic type-juggling kicks in this might be fine. In other cases, however this might be a bug.
We suggest to add an explicit type cast like in the following example: