1 files changed, 231 insertions, 0 deletions
diff --git a/www/wiki/extensions/SemanticMediaWiki/src/DataValues/ImportValue.php b/www/wiki/extensions/SemanticMediaWiki/src/DataValues/ImportValue.php
new file mode 100644
index 00000000..9a9e1bb4
--- /dev/null
+++ b/www/wiki/extensions/SemanticMediaWiki/src/DataValues/ImportValue.php
@@ -0,0 +1,231 @@
+<?php
+
+namespace SMW\DataValues;
+
+use SMW\Message;
+use SMWDataItem as DataItem;
+use SMWDataValue as DataValue;
+use SMWDIBlob as DIBlob;
+
+/**
+ * This datavalue implements datavalues used by special property '_IMPO' used
+ * for assigning imported vocabulary to some page of the wiki. It looks up a
+ * MediaWiki message to find out whether a user-supplied vocabulary name can be
+ * imported in the wiki, and whether its declaration is correct (to the extent
+ * that this can be checked).
+ *
+ * @author Fabian Howahl
+ * @author Markus Krötzsch
+ */
+class ImportValue extends DataValue {
+
+	/**
+	 * DV identifier
+	 */
+	const TYPE_ID = '__imp';
+
+	/**
+	 * Fixed Mediawiki import prefix
+	 */
+	const IMPORT_PREFIX = 'Smw_import_';
+
+	/**
+	 * Type string assigned by the import declaration
+	 *
+	 * @var string
+	 */
+	private $termType = '';
+
+	/**
+	 * String provided by user which is used to look up data on Mediawiki:*-Page
+	 *
+	 * @var string
+	 */
+	private $qname = '';
+
+	/**
+	 * URI of namespace (without local name)
+	 *
+	 * @var string
+	 */
+	private $uri = '';
+
+	/**
+	 * Namespace id (e.g. "foaf")
+	 *
+	 * @var string
+	 */
+	private $namespace = '';
+
+	/**
+	 * Local name (e.g. "knows")
+	 *
+	 * @var string
+	 */
+	private $term = '';
+
+	/**
+	 * Wiki name of the vocab (e.g. "Friend of a Friend"), might contain wiki markup
+	 *
+	 * @var string
+	 */
+	private $declarativeName = '';
+
+	/**
+	 * @param string $typeid
+	 */
+	public function __construct( $typeid = self::TYPE_ID ) {
+		parent::__construct( $typeid );
+	}
+
+	/**
+	 * @see DataValue::parseUserValue
+	 *
+	 * @param string $value
+	 */
+	protected function parseUserValue( $value ) {
+		$this->qname = $value;
+
+		$importValueParser = $this->dataValueServiceFactory->getValueParser(
+			$this
+		);
+
+		list( $this->namespace, $this->term, $this->uri, $this->declarativeName, $this->termType ) = $importValueParser->parse(
+			$value
+		);
+
+		if ( $importValueParser->getErrors() !== [] ) {
+
+			foreach ( $importValueParser->getErrors() as $message ) {
+				$this->addErrorMsg( $message );
+			}
+
+			$this->m_dataitem = new DIBlob( 'ERROR' );
+			return;
+		}
+
+		// Encoded string for DB storage
+		$this->m_dataitem = new DIBlob(
+			$this->namespace . ' ' .
+			$this->term . ' ' .
+			$this->uri . ' ' .
+			$this->termType
+		);
+
+		// check whether caption is set, otherwise assign link statement to caption
+		if ( $this->m_caption === false ) {
+			$this->m_caption = $this->createCaption( $this->namespace, $this->qname, $this->uri, $this->declarativeName );
+		}
+	}
+
+	/**
+	 * @see SMWDataValue::loadDataItem
+	 *
+	 * @param DataItem $dataitem
+	 *
+	 * @return boolean
+	 */
+	protected function loadDataItem( DataItem $dataItem ) {
+
+		if ( !$dataItem instanceof DIBlob ) {
+			return false;
+		}
+
+		$this->m_dataitem = $dataItem;
+		$parts = explode( ' ', $dataItem->getString(), 4 );
+
+		if ( count( $parts ) != 4 ) {
+			$this->addErrorMsg( [ 'smw-datavalue-import-invalid-format', $dataItem->getString() ] );
+		} else {
+			$this->namespace = $parts[0];
+			$this->term = $parts[1];
+			$this->uri = $parts[2];
+			$this->termType = $parts[3];
+			$this->qname = $this->namespace . ':' . $this->term;
+			$this->declarativeName = '';
+			$this->m_caption = $this->createCaption( $this->namespace, $this->qname, $this->uri, $this->declarativeName );
+		}
+
+		return true;
+	}
+
+	/**
+	 * @see DataValue::getShortWikiText
+	 */
+	public function getShortWikiText( $linked = null ) {
+		return $this->m_caption;
+	}
+
+	/**
+	 * @see DataValue::getShortHTMLText
+	 */
+	public function getShortHTMLText( $linker = null ) {
+		return htmlspecialchars( $this->qname );
+	}
+
+	/**
+	 * @see DataValue::getLongWikiText
+	 */
+	public function getLongWikiText( $linked = null ) {
+
+		if ( !$this->isValid() ) {
+			return $this->getErrorText();
+		}
+
+		return "[[MediaWiki:" . self::IMPORT_PREFIX . $this->namespace . "|" . $this->qname . "]]";
+	}
+
+	/**
+	 * @see DataValue::getLongHTMLText
+	 */
+	public function getLongHTMLText( $linker = null ) {
+
+		if ( !$this->isValid() ) {
+			return $this->getErrorText();
+		}
+
+		return htmlspecialchars( $this->qname );
+	}
+
+	/**
+	 * @see DataValue::getWikiValue
+	 */
+	public function getWikiValue() {
+		return $this->qname;
+	}
+
+	public function getNS() {
+		return $this->uri;
+	}
+
+	public function getNSID() {
+		return $this->namespace;
+	}
+
+	public function getLocalName() {
+		return $this->term;
+	}
+
+	/**
+	 * @since 2.2
+	 *
+	 * @return string
+	 */
+	public function getTermType() {
+		return $this->termType;
+	}
+
+	/**
+	 * @since 2.2
+	 *
+	 * @return string
+	 */
+	public function getImportReference() {
+		return $this->namespace . ':' . $this->term . '|' . $this->uri;
+	}
+
+	private function createCaption( $namespace, $qname, $uri, $declarativeName ) {
+		return "[[MediaWiki:" . self::IMPORT_PREFIX . $namespace . "|" . $qname . "]] " .  Message::get( [ 'parentheses', "[$uri $namespace] | " . $declarativeName ], Message::PARSE );
+	}
+
+}