1 files changed, 94 insertions, 0 deletions
diff --git a/www/wiki/extensions/SemanticMediaWiki/src/DataValues/ValueParsers/AllowsPatternValueParser.php b/www/wiki/extensions/SemanticMediaWiki/src/DataValues/ValueParsers/AllowsPatternValueParser.php
new file mode 100644
index 00000000..f8a29c6e
--- /dev/null
+++ b/www/wiki/extensions/SemanticMediaWiki/src/DataValues/ValueParsers/AllowsPatternValueParser.php
@@ -0,0 +1,94 @@
+<?php
+
+namespace SMW\DataValues\ValueParsers;
+
+use SMW\DataValues\AllowsPatternValue;
+use SMW\MediaWiki\MediaWikiNsContentReader;
+
+/**
+ * @private
+ *
+ * @license GNU GPL v2+
+ * @since 2.4
+ *
+ * @author mwjames
+ */
+class AllowsPatternValueParser implements ValueParser {
+
+	/**
+	 * @var MediaWikiNsContentReader
+	 */
+	private $mediaWikiNsContentReader;
+
+	/**
+	 * @var array
+	 */
+	private $errors = [];
+
+	/**
+	 * @since 2.4
+	 *
+	 * @param MediaWikiNsContentReader $mediaWikiNsContentReader
+	 */
+	public function __construct( MediaWikiNsContentReader $mediaWikiNsContentReader ) {
+		$this->mediaWikiNsContentReader = $mediaWikiNsContentReader;
+	}
+
+	/**
+	 * @since 2.4
+	 *
+	 * @return array
+	 */
+	public function getErrors() {
+		return $this->errors;
+	}
+
+	/**
+	 * @since 2.4
+	 *
+	 * @param string $userValue
+	 *
+	 * @return string|false
+	 */
+	public function parse( $userValue ) {
+
+		$this->errors = [];
+
+		$contentList = $this->doParseContent(
+			$this->mediaWikiNsContentReader->read( AllowsPatternValue::REFERENCE_PAGE_ID )
+		);
+
+		if ( !isset( $contentList[$userValue] ) ) {
+			return false;
+		}
+
+		return $contentList[$userValue];
+	}
+
+	private function doParseContent( $contents ) {
+
+		$list = [];
+
+		if ( $contents === '' ) {
+			return null;
+		}
+
+		$parts = array_map( 'trim', preg_split( "([\n][\s]?)", $contents ) );
+
+		// Get definition from first line
+		array_shift( $parts );
+
+		foreach ( $parts as $part ) {
+
+			if ( strpos( $part, '|' ) === false ) {
+				continue;
+			}
+
+			list( $reference, $regex ) = explode( '|', $part, 2 );
+			$list[trim( $reference )] = $regex;
+		}
+
+		return $list;
+	}
+
+}