resources/mediawiki/mediawiki.util.js

   1 /**
   2  * Implements mediaWiki.util library
   3  */
   4 ( function ( $, mw ) {
   5         "use strict";
   6
   7         // Local cache and alias
   8         var util = {
   9
  10                 /**
  11                  * Initialisation
  12                  * (don't call before document ready)
  13                  */
  14                 init: function () {
  15                         var profile, $tocTitle, $tocToggleLink, hideTocCookie;
  16
  17                         /* Set up $.messageBox */
  18                         $.messageBoxNew( {
  19                                 id: 'mw-js-message',
  20                                 parent: '#content'
  21                         } );
  22
  23                         /* Set tooltipAccessKeyPrefix */
  24                         profile = $.client.profile();
  25
  26                         // Opera on any platform
  27                         if ( profile.name === 'opera' ) {
  28                                 util.tooltipAccessKeyPrefix = 'shift-esc-';
  29
  30                         // Chrome on any platform
  31                         } else if ( profile.name === 'chrome' ) {
  32                                 // Chrome on Mac or Chrome on other platform ?
  33                                 util.tooltipAccessKeyPrefix = ( profile.platform === 'mac'
  34                                         ? 'ctrl-option-' : 'alt-' );
  35
  36                         // Non-Windows Safari with webkit_version > 526
  37                         } else if ( profile.platform !== 'win'
  38                                 && profile.name === 'safari'
  39                                 && profile.layoutVersion > 526 ) {
  40                                 util.tooltipAccessKeyPrefix = 'ctrl-alt-';
  41
  42                         // Safari/Konqueror on any platform, or any browser on Mac
  43                         // (but not Safari on Windows)
  44                         } else if ( !( profile.platform === 'win' && profile.name === 'safari' )
  45                                                         && ( profile.name === 'safari'
  46                                                         || profile.platform === 'mac'
  47                                                         || profile.name === 'konqueror' ) ) {
  48                                 util.tooltipAccessKeyPrefix = 'ctrl-';
  49
  50                         // Firefox 2.x and later
  51                         } else if ( profile.name === 'firefox' && profile.versionBase > '1' ) {
  52                                 util.tooltipAccessKeyPrefix = 'alt-shift-';
  53                         }
  54
  55                         /* Fill $content var */
  56                         if ( $( '#bodyContent' ).length ) {
  57                                 // Vector, Monobook, Chick etc.
  58                                 util.$content = $( '#bodyContent' );
  59
  60                         } else if ( $( '#mw_contentholder' ).length ) {
  61                                 // Modern
  62                                 util.$content = $( '#mw_contentholder' );
  63
  64                         } else if ( $( '#article' ).length ) {
  65                                 // Standard, CologneBlue
  66                                 util.$content = $( '#article' );
  67
  68                         } else {
  69                                 // #content is present on almost all if not all skins. Most skins (the above cases)
  70                                 // have #content too, but as an outer wrapper instead of the article text container.
  71                                 // The skins that don't have an outer wrapper do have #content for everything
  72                                 // so it's a good fallback
  73                                 util.$content = $( '#content' );
  74                         }
  75
  76                         // Table of contents toggle
  77                         $tocTitle = $( '#toctitle' );
  78                         $tocToggleLink = $( '#togglelink' );
  79                         // Only add it if there is a TOC and there is no toggle added already
  80                         if ( $( '#toc' ).length && $tocTitle.length && !$tocToggleLink.length ) {
  81                                 hideTocCookie = $.cookie( 'mw_hidetoc' );
  82                                         $tocToggleLink = $( '<a href="#" class="internal" id="togglelink"></a>' )
  83                                                 .text( mw.msg( 'hidetoc' ) )
  84                                                 .click( function ( e ) {
  85                                                         e.preventDefault();
  86                                                         util.toggleToc( $(this) );
  87                                                 } );
  88                                 $tocTitle.append(
  89                                         $tocToggleLink
  90                                                 .wrap( '<span class="toctoggle"></span>' )
  91                                                 .parent()
  92                                                         .prepend( '&nbsp;[' )
  93                                                         .append( ']&nbsp;' )
  94                                 );
  95
  96                                 if ( hideTocCookie === '1' ) {
  97                                         util.toggleToc( $tocToggleLink );
  98                                 }
  99                         }
 100                 },
 101
 102                 /* Main body */
 103
 104                 /**
 105                  * Encode the string like PHP's rawurlencode
 106                  *
 107                  * @param str string String to be encoded
 108                  */
 109                 rawurlencode: function ( str ) {
 110                         str = String( str );
 111                         return encodeURIComponent( str )
 112                                 .replace( /!/g, '%21' ).replace( /'/g, '%27' ).replace( /\(/g, '%28' )
 113                                 .replace( /\)/g, '%29' ).replace( /\*/g, '%2A' ).replace( /~/g, '%7E' );
 114                 },
 115
 116                 /**
 117                  * Encode page titles for use in a URL
 118                  * We want / and : to be included as literal characters in our title URLs
 119                  * as they otherwise fatally break the title
 120                  *
 121                  * @param str string String to be encoded
 122                  */
 123                 wikiUrlencode: function ( str ) {
 124                         return util.rawurlencode( str )
 125                                 .replace( /%20/g, '_' ).replace( /%3A/g, ':' ).replace( /%2F/g, '/' );
 126                 },
 127
 128                 /**
 129                  * Get the link to a page name (relative to wgServer)
 130                  *
 131                  * @param str String: Page name to get the link for.
 132                  * @return String: Location for a page with name of 'str' or boolean false on error.
 133                  */
 134                 wikiGetlink: function ( str ) {
 135                         return mw.config.get( 'wgArticlePath' ).replace( '$1',
 136                                 util.wikiUrlencode( typeof str === 'string' ? str : mw.config.get( 'wgPageName' ) ) );
 137                 },
 138
 139                 /**
 140                  * Get address to a script in the wiki root.
 141                  * For index.php use mw.config.get( 'wgScript' )
 142                  *
 143                  * @param str string Name of script (eg. 'api'), defaults to 'index'
 144                  * @return string Address to script (eg. '/w/api.php' )
 145                  */
 146                 wikiScript: function ( str ) {
 147                         return mw.config.get( 'wgScriptPath' ) + '/' + ( str || 'index' ) +
 148                                 mw.config.get( 'wgScriptExtension' );
 149                 },
 150
 151                 /**
 152                  * Append a new style block to the head and return the CSSStyleSheet object.
 153                  * Use .ownerNode to access the <style> element, or use mw.loader.addStyleTag.
 154                  * This function returns the styleSheet object for convience (due to cross-browsers
 155                  * difference as to where it is located).
 156                  * @example
 157                  * <code>
 158                  * var sheet = mw.util.addCSS('.foobar { display: none; }');
 159                  * $(foo).click(function () {
 160                  *     // Toggle the sheet on and off
 161                  *     sheet.disabled = !sheet.disabled;
 162                  * });
 163                  * </code>
 164                  *
 165                  * @param text string CSS to be appended
 166                  * @return CSSStyleSheet (use .ownerNode to get to the <style> element)
 167                  */
 168                 addCSS: function ( text ) {
 169                         var s = mw.loader.addStyleTag( text );
 170                         return s.sheet || s;
 171                 },
 172
 173                 /**
 174                  * Hide/show the table of contents element
 175                  *
 176                  * @param $toggleLink jQuery A jQuery object of the toggle link.
 177                  * @param callback function Function to be called after the toggle is
 178                  * completed (including the animation) (optional)
 179                  * @return mixed Boolean visibility of the toc (true if it's visible)
 180                  * or Null if there was no table of contents.
 181                  */
 182                 toggleToc: function ( $toggleLink, callback ) {
 183                         var $tocList = $( '#toc ul:first' );
 184
 185                         // This function shouldn't be called if there's no TOC,
 186                         // but just in case...
 187                         if ( $tocList.length ) {
 188                                 if ( $tocList.is( ':hidden' ) ) {
 189                                         $tocList.slideDown( 'fast', callback );
 190                                         $toggleLink.text( mw.msg( 'hidetoc' ) );
 191                                         $( '#toc' ).removeClass( 'tochidden' );
 192                                         $.cookie( 'mw_hidetoc', null, {
 193                                                 expires: 30,
 194                                                 path: '/'
 195                                         } );
 196                                         return true;
 197                                 } else {
 198                                         $tocList.slideUp( 'fast', callback );
 199                                         $toggleLink.text( mw.msg( 'showtoc' ) );
 200                                         $( '#toc' ).addClass( 'tochidden' );
 201                                         $.cookie( 'mw_hidetoc', '1', {
 202                                                 expires: 30,
 203                                                 path: '/'
 204                                         } );
 205                                         return false;
 206                                 }
 207                         } else {
 208                                 return null;
 209                         }
 210                 },
 211
 212                 /**
 213                  * Grab the URL parameter value for the given parameter.
 214                  * Returns null if not found.
 215                  *
 216                  * @param param string The parameter name.
 217                  * @param url string URL to search through (optional)
 218                  * @return mixed Parameter value or null.
 219                  */
 220                 getParamValue: function ( param, url ) {
 221                         url = url || document.location.href;
 222                         // Get last match, stop at hash
 223                         var     re = new RegExp( '^[^#]*[&?]' + $.escapeRE( param ) + '=([^&#]*)' ),
 224                                 m = re.exec( url );
 225                         if ( m && m.length > 1 ) {
 226                                 // Beware that decodeURIComponent is not required to understand '+'
 227                                 // by spec, as encodeURIComponent does not produce it.
 228                                 return decodeURIComponent( m[1].replace( /\+/g, '%20' ) );
 229                         }
 230                         return null;
 231                 },
 232
 233                 /**
 234                  * @var string
 235                  * Access key prefix. Will be re-defined based on browser/operating system
 236                  * detection in mw.util.init().
 237                  */
 238                 tooltipAccessKeyPrefix: 'alt-',
 239
 240                 /**
 241                  * @var RegExp
 242                  * Regex to match accesskey tooltips.
 243                  */
 244                 tooltipAccessKeyRegexp: /\[(ctrl-)?(alt-)?(shift-)?(esc-)?(.)\]$/,
 245
 246                 /**
 247                  * Add the appropriate prefix to the accesskey shown in the tooltip.
 248                  * If the nodeList parameter is given, only those nodes are updated;
 249                  * otherwise, all the nodes that will probably have accesskeys by
 250                  * default are updated.
 251                  *
 252                  * @param $nodes {Array|jQuery} [optional] A jQuery object, or array
 253                  * of elements to update.
 254                  */
 255                 updateTooltipAccessKeys: function ( $nodes ) {
 256                         if ( !$nodes ) {
 257                                 // Rather than going into a loop of all anchor tags, limit to few elements that
 258                                 // contain the relevant anchor tags.
 259                                 // Input and label are rare enough that no such optimization is needed
 260                                 $nodes = $( '#column-one a, #mw-head a, #mw-panel a, #p-logo a, input, label' );
 261                         } else if ( !( $nodes instanceof $ ) ) {
 262                                 $nodes = $( $nodes );
 263                         }
 264
 265                         $nodes.attr( 'title', function ( i, val ) {
 266                                 if ( val && util.tooltipAccessKeyRegexp.exec( val ) ) {
 267                                         return val.replace( util.tooltipAccessKeyRegexp,
 268                                                 '[' + util.tooltipAccessKeyPrefix + '$5]' );
 269                                 }
 270                                 return val;
 271                         } );
 272                 },
 273
 274                 /*
 275                  * @var jQuery
 276                  * A jQuery object that refers to the page-content element
 277                  * Populated by init().
 278                  */
 279                 $content: null,
 280
 281                 /**
 282                  * Add a link to a portlet menu on the page, such as:
 283                  *
 284                  * p-cactions (Content actions), p-personal (Personal tools),
 285                  * p-navigation (Navigation), p-tb (Toolbox)
 286                  *
 287                  * The first three paramters are required, the others are optional and
 288                  * may be null. Though providing an id and tooltip is recommended.
 289                  *
 290                  * By default the new link will be added to the end of the list. To
 291                  * add the link before a given existing item, pass the DOM node
 292                  * (document.getElementById( 'foobar' )) or the jQuery-selector
 293                  * ( '#foobar' ) of that item.
 294                  *
 295                  * @example mw.util.addPortletLink(
 296                  *       'p-tb', 'http://mediawiki.org/',
 297                  *       'MediaWiki.org', 't-mworg', 'Go to MediaWiki.org ', 'm', '#t-print'
 298                  * )
 299                  *
 300                  * @param portlet string ID of the target portlet ( 'p-cactions' or 'p-personal' etc.)
 301                  * @param href string Link URL
 302                  * @param text string Link text
 303                  * @param id string ID of the new item, should be unique and preferably have
 304                  * the appropriate prefix ( 'ca-', 'pt-', 'n-' or 't-' )
 305                  * @param tooltip string Text to show when hovering over the link, without accesskey suffix
 306                  * @param accesskey string Access key to activate this link (one character, try
 307                  * to avoid conflicts. Use $( '[accesskey=x]' ).get() in the console to
 308                  * see if 'x' is already used.
 309                  * @param nextnode mixed DOM Node or jQuery-selector string of the item that the new
 310                  * item should be added before, should be another item in the same
 311                  * list, it will be ignored otherwise
 312                  *
 313                  * @return mixed The DOM Node of the added item (a ListItem or Anchor element,
 314                  * depending on the skin) or null if no element was added to the document.
 315                  */
 316                 addPortletLink: function ( portlet, href, text, id, tooltip, accesskey, nextnode ) {
 317                         var $item, $link, $portlet, $ul;
 318
 319                         // Check if there's atleast 3 arguments to prevent a TypeError
 320                         if ( arguments.length < 3 ) {
 321                                 return null;
 322                         }
 323                         // Setup the anchor tag
 324                         $link = $( '<a>' ).attr( 'href', href ).text( text );
 325                         if ( tooltip ) {
 326                                 $link.attr( 'title', tooltip );
 327                         }
 328
 329                         // Some skins don't have any portlets
 330                         // just add it to the bottom of their 'sidebar' element as a fallback
 331                         switch ( mw.config.get( 'skin' ) ) {
 332                         case 'standard':
 333                         case 'cologneblue':
 334                                 $( '#quickbar' ).append( $link.after( '<br/>' ) );
 335                                 return $link[0];
 336                         case 'nostalgia':
 337                                 $( '#searchform' ).before( $link ).before( ' &#124; ' );
 338                                 return $link[0];
 339                         default: // Skins like chick, modern, monobook, myskin, simple, vector...
 340
 341                                 // Select the specified portlet
 342                                 $portlet = $( '#' + portlet );
 343                                 if ( $portlet.length === 0 ) {
 344                                         return null;
 345                                 }
 346                                 // Select the first (most likely only) unordered list inside the portlet
 347                                 $ul = $portlet.find( 'ul' );
 348
 349                                 // If it didn't have an unordered list yet, create it
 350                                 if ( $ul.length === 0 ) {
 351                                         // If there's no <div> inside, append it to the portlet directly
 352                                         if ( $portlet.find( 'div:first' ).length === 0 ) {
 353                                                 $portlet.append( '<ul></ul>' );
 354                                         } else {
 355                                                 // otherwise if there's a div (such as div.body or div.pBody)
 356                                                 // append the <ul> to last (most likely only) div
 357                                                 $portlet.find( 'div' ).eq( -1 ).append( '<ul></ul>' );
 358                                         }
 359                                         // Select the created element
 360                                         $ul = $portlet.find( 'ul' ).eq( 0 );
 361                                 }
 362                                 // Just in case..
 363                                 if ( $ul.length === 0 ) {
 364                                         return null;
 365                                 }
 366
 367                                 // Unhide portlet if it was hidden before
 368                                 $portlet.removeClass( 'emptyPortlet' );
 369
 370                                 // Wrap the anchor tag in a list item (and a span if $portlet is a Vector tab)
 371                                 // and back up the selector to the list item
 372                                 if ( $portlet.hasClass( 'vectorTabs' ) ) {
 373                                         $item = $link.wrap( '<li><span></span></li>' ).parent().parent();
 374                                 } else {
 375                                         $item = $link.wrap( '<li></li>' ).parent();
 376                                 }
 377
 378                                 // Implement the properties passed to the function
 379                                 if ( id ) {
 380                                         $item.attr( 'id', id );
 381                                 }
 382                                 if ( accesskey ) {
 383                                         $link.attr( 'accesskey', accesskey );
 384                                         tooltip += ' [' + accesskey + ']';
 385                                         $link.attr( 'title', tooltip );
 386                                 }
 387                                 if ( accesskey && tooltip ) {
 388                                         util.updateTooltipAccessKeys( $link );
 389                                 }
 390
 391                                 // Where to put our node ?
 392                                 // - nextnode is a DOM element (was the only option before MW 1.17, in wikibits.js)
 393                                 if ( nextnode && nextnode.parentNode === $ul[0] ) {
 394                                         $(nextnode).before( $item );
 395
 396                                 // - nextnode is a CSS selector for jQuery
 397                                 } else if ( typeof nextnode === 'string' && $ul.find( nextnode ).length !== 0 ) {
 398                                         $ul.find( nextnode ).eq( 0 ).before( $item );
 399
 400                                 // If the jQuery selector isn't found within the <ul>,
 401                                 // or if nextnode was invalid or not passed at all,
 402                                 // then just append it at the end of the <ul> (this is the default behaviour)
 403                                 } else {
 404                                         $ul.append( $item );
 405                                 }
 406
 407
 408                                 return $item[0];
 409                         }
 410                 },
 411
 412                 /**
 413                  * Add a little box at the top of the screen to inform the user of
 414                  * something, replacing any previous message.
 415                  * Calling with no arguments, with an empty string or null will hide the message
 416                  *
 417                  * @param message {mixed} The DOM-element, jQuery object or HTML-string to be put inside the message box.
 418                  * @param className {String} Used in adding a class; should be different for each call
 419                  * to allow CSS/JS to hide different boxes. null = no class used.
 420                  * @return {Boolean} True on success, false on failure.
 421                  */
 422                 jsMessage: function ( message, className ) {
 423                         if ( !arguments.length || message === '' || message === null ) {
 424                                 $( '#mw-js-message' ).empty().hide();
 425                                 return true; // Emptying and hiding message is intended behaviour, return true
 426
 427                         } else {
 428                                 // We special-case skin structures provided by the software. Skins that
 429                                 // choose to abandon or significantly modify our formatting can just define
 430                                 // an mw-js-message div to start with.
 431                                 var $messageDiv = $( '#mw-js-message' );
 432                                 if ( !$messageDiv.length ) {
 433                                         $messageDiv = $( '<div id="mw-js-message"></div>' );
 434                                         if ( util.$content.parent().length ) {
 435                                                 util.$content.parent().prepend( $messageDiv );
 436                                         } else {
 437                                                 return false;
 438                                         }
 439                                 }
 440
 441                                 if ( className ) {
 442                                         $messageDiv.prop( 'class', 'mw-js-message-' + className );
 443                                 }
 444
 445                                 if ( typeof message === 'object' ) {
 446                                         $messageDiv.empty();
 447                                         $messageDiv.append( message );
 448                                 } else {
 449                                         $messageDiv.html( message );
 450                                 }
 451
 452                                 $messageDiv.slideDown();
 453                                 return true;
 454                         }
 455                 },
 456
 457                 /**
 458                  * Validate a string as representing a valid e-mail address
 459                  * according to HTML5 specification. Please note the specification
 460                  * does not validate a domain with one character.
 461                  *
 462                  * @todo FIXME: should be moved to or replaced by a JavaScript validation module.
 463                  *
 464                  * @param mailtxt string E-mail address to be validated.
 465                  * @return mixed Null if mailtxt was an empty string, otherwise true/false
 466                  * is determined by validation.
 467                  */
 468                 validateEmail: function ( mailtxt ) {
 469                         var rfc5322_atext, rfc1034_ldh_str, HTML5_email_regexp;
 470
 471                         if ( mailtxt === '' ) {
 472                                 return null;
 473                         }
 474
 475                         /**
 476                          * HTML5 defines a string as valid e-mail address if it matches
 477                          * the ABNF:
 478                          *      1 * ( atext / "." ) "@" ldh-str 1*( "." ldh-str )
 479                          * With:
 480                          * - atext      : defined in RFC 5322 section 3.2.3
 481                          * - ldh-str : defined in RFC 1034 section 3.5
 482                          *
 483                          * (see STD 68 / RFC 5234 http://tools.ietf.org/html/std68):
 484                          */
 485
 486                         /**
 487                          * First, define the RFC 5322 'atext' which is pretty easy:
 488                          * atext = ALPHA / DIGIT / ; Printable US-ASCII
 489                                                  "!" / "#" /     ; characters not including
 490                                                  "$" / "%" /     ; specials. Used for atoms.
 491                                                  "&" / "'" /
 492                                                  "*" / "+" /
 493                                                  "-" / "/" /
 494                                                  "=" / "?" /
 495                                                  "^" / "_" /
 496                                                  "`" / "{" /
 497                                                  "|" / "}" /
 498                                                  "~"
 499                         */
 500                         rfc5322_atext = "a-z0-9!#$%&'*+\\-/=?^_`{|}~";
 501
 502                         /**
 503                          * Next define the RFC 1034 'ldh-str'
 504                          *      <domain> ::= <subdomain> | " "
 505                          *      <subdomain> ::= <label> | <subdomain> "." <label>
 506                          *      <label> ::= <letter> [ [ <ldh-str> ] <let-dig> ]
 507                          *      <ldh-str> ::= <let-dig-hyp> | <let-dig-hyp> <ldh-str>
 508                          *      <let-dig-hyp> ::= <let-dig> | "-"
 509                          *      <let-dig> ::= <letter> | <digit>
 510                          */
 511                         rfc1034_ldh_str = "a-z0-9\\-";
 512
 513                         HTML5_email_regexp = new RegExp(
 514                                 // start of string
 515                                 '^'
 516                                 +
 517                                 // User part which is liberal :p
 518                                 '[' + rfc5322_atext + '\\.]+'
 519                                 +
 520                                 // 'at'
 521                                 '@'
 522                                 +
 523                                 // Domain first part
 524                                 '[' + rfc1034_ldh_str + ']+'
 525                                 +
 526                                 // Optional second part and following are separated by a dot
 527                                 '(?:\\.[' + rfc1034_ldh_str + ']+)*'
 528                                 +
 529                                 // End of string
 530                                 '$',
 531                                 // RegExp is case insensitive
 532                                 'i'
 533                         );
 534                         return (null !== mailtxt.match( HTML5_email_regexp ) );
 535                 },
 536
 537                 /**
 538                  * Note: borrows from IP::isIPv4
 539                  *
 540                  * @param address string
 541                  * @param allowBlock boolean
 542                  * @return boolean
 543                  */
 544                 isIPv4Address: function ( address, allowBlock ) {
 545                         if ( typeof address !== 'string' ) {
 546                                 return false;
 547                         }
 548
 549                         var     block = allowBlock ? '(?:\\/(?:3[0-2]|[12]?\\d))?' : '',
 550                                 RE_IP_BYTE = '(?:25[0-5]|2[0-4][0-9]|1[0-9][0-9]|0?[0-9]?[0-9])',
 551                                 RE_IP_ADD = '(?:' + RE_IP_BYTE + '\\.){3}' + RE_IP_BYTE;
 552
 553                         return address.search( new RegExp( '^' + RE_IP_ADD + block + '$' ) ) !== -1;
 554                 },
 555
 556                 /**
 557                  * Note: borrows from IP::isIPv6
 558                  *
 559                  * @param address string
 560                  * @param allowBlock boolean
 561                  * @return boolean
 562                  */
 563                 isIPv6Address: function ( address, allowBlock ) {
 564                         if ( typeof address !== 'string' ) {
 565                                 return false;
 566                         }
 567
 568                         var     block = allowBlock ? '(?:\\/(?:12[0-8]|1[01][0-9]|[1-9]?\\d))?' : '',
 569                                 RE_IPV6_ADD =
 570                         '(?:' + // starts with "::" (including "::")
 571                         ':(?::|(?::' + '[0-9A-Fa-f]{1,4}' + '){1,7})' +
 572                         '|' + // ends with "::" (except "::")
 573                         '[0-9A-Fa-f]{1,4}' + '(?::' + '[0-9A-Fa-f]{1,4}' + '){0,6}::' +
 574                         '|' + // contains no "::"
 575                         '[0-9A-Fa-f]{1,4}' + '(?::' + '[0-9A-Fa-f]{1,4}' + '){7}' +
 576                         ')';
 577
 578                         if ( address.search( new RegExp( '^' + RE_IPV6_ADD + block + '$' ) ) !== -1 ) {
 579                                 return true;
 580                         }
 581
 582                         RE_IPV6_ADD = // contains one "::" in the middle (single '::' check below)
 583                                 '[0-9A-Fa-f]{1,4}' + '(?:::?' + '[0-9A-Fa-f]{1,4}' + '){1,6}';
 584
 585                         return address.search( new RegExp( '^' + RE_IPV6_ADD + block + '$' ) ) !== -1
 586                                 && address.search( /::/ ) !== -1 && address.search( /::.*::/ ) === -1;
 587                 }
 588         };
 589
 590         mw.util = util;
 591
 592 } )( jQuery, mediaWiki );