+ /**
+ * Identical to rawElement(), but has no third parameter and omits the end
+ * tag (and the self-closing '/' in XML mode for empty elements).
+ */
+ public static function openElement( $element, $attribs = array() ) {
+ global $wgHtml5, $wgWellFormedXml;
+ $attribs = (array)$attribs;
+ # This is not required in HTML5, but let's do it anyway, for
+ # consistency and better compression.
+ $element = strtolower( $element );
+
+ # In text/html, initial <html> and <head> tags can be omitted under
+ # pretty much any sane circumstances, if they have no attributes. See:
+ # <http://www.whatwg.org/specs/web-apps/current-work/multipage/syntax.html#optional-tags>
+ if ( !$wgWellFormedXml && !$attribs
+ && in_array( $element, array( 'html', 'head' ) ) ) {
+ return '';
+ }
+
+ # Remove HTML5-only attributes if we aren't doing HTML5, and disable
+ # form validation regardless (see bug 23769 and the more detailed
+ # comment in expandAttributes())
+ if ( $element == 'input' ) {
+ # Whitelist of types that don't cause validation. All except
+ # 'search' are valid in XHTML1.
+ $validTypes = array(
+ 'hidden',
+ 'text',
+ 'password',
+ 'checkbox',
+ 'radio',
+ 'file',
+ 'submit',
+ 'image',
+ 'reset',
+ 'button',
+ 'search',
+ );
+ if ( isset( $attribs['type'] )
+ && !in_array( $attribs['type'], $validTypes ) ) {
+ unset( $attribs['type'] );
+ }
+ if ( isset( $attribs['type'] ) && $attribs['type'] == 'search'
+ && !$wgHtml5 ) {
+ unset( $attribs['type'] );
+ }
+ }
+ if ( !$wgHtml5 && $element == 'textarea' && isset( $attribs['maxlength'] ) ) {
+ unset( $attribs['maxlength'] );
+ }
+
+ return "<$element" . self::expandAttributes(
+ self::dropDefaults( $element, $attribs ) ) . '>';
+ }
+
+ /**
+ * Returns "</$element>", except if $wgWellFormedXml is off, in which case
+ * it returns the empty string when that's guaranteed to be safe.
+ *
+ * @param $element string Name of the element, e.g., 'a'
+ * @return string A closing tag, if required
+ */
+ public static function closeElement( $element ) {
+ global $wgWellFormedXml;
+
+ $element = strtolower( $element );
+
+ # Reference:
+ # http://www.whatwg.org/specs/web-apps/current-work/multipage/syntax.html#optional-tags
+ if ( !$wgWellFormedXml && in_array( $element, array(
+ 'html',
+ 'head',
+ 'body',
+ 'li',
+ 'dt',
+ 'dd',
+ 'tr',
+ 'td',
+ 'th',
+ ) ) ) {
+ return '';
+ }
+ return "</$element>";
+ }
+