1 files changed, 127 insertions, 0 deletions
diff --git a/www/wiki/extensions/SemanticMediaWiki/src/DataValues/ValueParsers/AllowsListValueParser.php b/www/wiki/extensions/SemanticMediaWiki/src/DataValues/ValueParsers/AllowsListValueParser.php
new file mode 100644
index 00000000..b476a7b2
--- /dev/null
+++ b/www/wiki/extensions/SemanticMediaWiki/src/DataValues/ValueParsers/AllowsListValueParser.php
@@ -0,0 +1,127 @@
+<?php
+
+namespace SMW\DataValues\ValueParsers;
+
+use SMW\DataValues\AllowsListValue;
+use SMW\MediaWiki\MediaWikiNsContentReader;
+
+/**
+ * @private
+ *
+ * @license GNU GPL v2+
+ * @since 2.5
+ *
+ * @author mwjames
+ */
+class AllowsListValueParser implements ValueParser {
+
+	/**
+	 * @var MediaWikiNsContentReader
+	 */
+	private $mediaWikiNsContentReader;
+
+	/**
+	 * @var array
+	 */
+	private $errors = [];
+
+	/**
+	 * @var array
+	 */
+	private static $contents = [];
+
+	/**
+	 * @since 2.5
+	 *
+	 * @param MediaWikiNsContentReader $mediaWikiNsContentReader
+	 */
+	public function __construct( MediaWikiNsContentReader $mediaWikiNsContentReader ) {
+		$this->mediaWikiNsContentReader = $mediaWikiNsContentReader;
+	}
+
+	/**
+	 * @since 2.5
+	 *
+	 * @return array
+	 */
+	public function getErrors() {
+		return $this->errors;
+	}
+
+	/**
+	 * @since 3.0
+	 */
+	public function clear() {
+		self::$contents = [];
+		$this->errors = [];
+	}
+
+	/**
+	 * @since 2.5
+	 *
+	 * @param string $userValue
+	 *
+	 * @return string|false
+	 */
+	public function parse( $userValue ) {
+
+		$this->errors = [];
+
+		if ( isset( self::$contents[$userValue] ) ) {
+			return self::$contents[$userValue];
+		}
+
+		self::$contents[$userValue] = $this->parse_contents(
+			$userValue,
+			$this->mediaWikiNsContentReader->read( AllowsListValue::LIST_PREFIX . $userValue )
+		);
+
+		return self::$contents[$userValue];
+	}
+
+	private function parse_contents( $userValue, $contents ) {
+
+		if ( $contents === '' ) {
+			return $this->errors[] = [ 'smw-datavalue-allows-value-list-unknown', $userValue ];
+		}
+
+		if ( $contents{0} === '{' && ( $list = json_decode( $contents, true ) ) && is_array( $list ) ) {
+			return $list;
+		}
+
+		return $this->parse_string( $userValue, $contents );
+	}
+
+	private function parse_string( $userValue, $contents ) {
+
+		$parts = array_map( 'trim', preg_split( "([\n][\s]?)", $contents ) );
+		$list = [];
+
+		foreach ( $parts as $part ) {
+
+			// Only recognize those with a * Foo
+			if ( strpos( $part, '*' ) === false ) {
+				continue;
+			}
+
+			// Remove * from the content, other processes may use the hierarchy
+			// indicator something else
+			$part = trim( str_replace( '*', '', $part ) );
+
+			// Allow something like * Foo|Bar
+			if ( strpos( $part, '|' ) !== false ) {
+				list( $reference, $val ) = explode( '|', $part, 2 );
+				$list[$reference] = $val;
+			} else {
+				$list[$part] = $part;
+			}
+		}
+
+		if ( $list === [] ) {
+			$this->errors[] = [ 'smw-datavalue-allows-value-list-missing-marker', $userValue ];
+		}
+
+		return $list;
+	}
+
+}