1 files changed, 83 insertions, 0 deletions
diff --git a/www/wiki/extensions/SemanticMediaWiki/src/DataValues/ExternalFormatterUriValue.php b/www/wiki/extensions/SemanticMediaWiki/src/DataValues/ExternalFormatterUriValue.php
new file mode 100644
index 00000000..6d401256
--- /dev/null
+++ b/www/wiki/extensions/SemanticMediaWiki/src/DataValues/ExternalFormatterUriValue.php
@@ -0,0 +1,83 @@
+<?php
+
+namespace SMW\DataValues;
+
+use SMWURIValue as UriValue;
+
+/**
+ * https://www.ietf.org/rfc/rfc3986.txt describes:
+ *
+ * " ... Uniform Resource Identifier (URI) is a compact sequence of characters
+ * that identifies an abstract or physical resource." with "... Uniform Resource
+ * Locator" (URL) refers to the subset of URIs that provide a means of locating
+ * the resource by describing its primary access mechanism ..."
+ *
+ * @license GNU GPL v2+
+ * @since 2.5
+ *
+ * @author mwjames
+ */
+class ExternalFormatterUriValue extends UriValue {
+
+	/**
+	 * @param string $typeid
+	 */
+	public function __construct( $typeid = '' ) {
+		parent::__construct( '__peru' );
+	}
+
+	/**
+	 * @see DataValue::parseUserValue
+	 *
+	 * @param string $value
+	 */
+	protected function parseUserValue( $value ) {
+
+		if ( $value === '' ) {
+			$this->addErrorMsg( 'smw_emptystring' );
+			return;
+		}
+
+		if ( filter_var( $value, FILTER_VALIDATE_URL ) === false && preg_match( '/((mailto\:|(news|urn|tel|(ht|f)tp(s?))\:\/\/){1}\S+)/u', $value ) === false ) {
+			$this->addErrorMsg( [ 'smw-datavalue-external-formatter-invalid-uri', $value ] );
+			return;
+		}
+
+		if ( strpos( $value, '$1' ) === false ) {
+			$this->addErrorMsg( 'smw-datavalue-external-formatter-uri-missing-placeholder' );
+			return;
+		}
+
+		parent::parseUserValue( $value );
+	}
+
+	/**
+	 * @since 2.5
+	 *
+	 * @param string $value
+	 *
+	 * @return string
+	 */
+	public function getUriWithPlaceholderSubstitution( $value ) {
+
+		if ( !$this->isValid() ) {
+			return '';
+		}
+
+		// Avoid already encoded values like `W%D6LLEKLA01` to be
+		// encoded twice
+		$value = $this->encode( rawurldecode( $value ) );
+
+		// %241 == encoded $1
+		return str_replace( [ '%241', '$1' ], [ '$1', $value ], $this->getDataItem()->getUri() );
+	}
+
+	// http://php.net/manual/en/function.urlencode.php#97969
+	private function encode( $string ) {
+		return str_replace(
+			[ '%21', '%2A', '%27', '%28', '%29', '%3B', '%3A', '%40', '%26', '%3D', '%2B', '%24', '%2C', '%2F', '%3F', '%25', '%23', '%5B', '%5D' ],
+			[ '!', '*', "'", "(", ")", ";", ":", "@", "&", "=", "+", "$", ",", "/", "?", "%", "#", "[", "]" ],
+			urlencode( $string )
+		);
+	}
+}