/**
  * GETS a message from the MediaWiki namespace
  */
 protected function getMessage(&$key)
 {
     $source = wfMsgGetKey($key, true, true, false);
     if (wfEmptyMsg($key, $source)) {
         return null;
     }
     return $source;
 }

/**
 * @param $key
 * @param $useDB
 * @param $langCode
 * @param $transform
 * @return bool
 */
function wfFakeAnswersMessaging(&$key, &$useDB, &$langCode, &$transform)
{
    $mask = "-answers2";
    if (!preg_match("/{$mask}\$/", $key, $matches)) {
        $key2 = "{$key}{$mask}";
        $msg2 = wfMsgGetKey($key2, $useDB, $langCode, $transform);
        if (!wfEmptyMsg($key2, $msg2)) {
            $key = $key2;
        }
    }
    return true;
}

 static function intFunction($parser, $part1 = '')
 {
     if (strval($part1) !== '') {
         $args = array_slice(func_get_args(), 2);
         $message = wfMsgGetKey($part1, true, false, false);
         $message = wfMsgReplaceArgs($message, $args);
         $message = $parser->replaceVariables($message);
         // like $wgMessageCache->transform()
         return $message;
     } else {
         return array('found' => false);
     }
 }

 /**
  * getMessagesJs generates a javascript addMessages() calls for a given module and language
  *
  * @param String $moduleName the name of the module
  * @param String $langCode Name of scriptText module ( that hosts messages )
  * @return string
  */
 public static function getMessagesJs($moduleName, $language)
 {
     global $wgOut;
     // TODO this should be cached. Perhaps with Localisation Cache.
     global $wgExtensionMessagesFiles;
     // Empty out messages in the current scope
     $messages = array();
     require $wgExtensionMessagesFiles[$moduleName];
     // iterate over the default messages, and get this wiki's current messages
     // presumably this will include local overrides in MediaWiki: space
     $messagesForJs = array();
     // 'en' is the default language, so it will be the most complete
     foreach (array_keys($messages['en']) as $key) {
         $messagesForJs[$key] = wfMsgGetKey($key, true, $language, false);
     }
     $messagesJson = FormatJson::encode($messagesForJs);
     return 'window.mediaWiki.addMessages(' . $messagesJson . ');';
 }

 private function getMessagesAndTests()
 {
     $messages = array();
     $tests = array();
     $wfMsgExtOptions = array('parsemag');
     foreach (array('en', 'fr', 'ar', 'jp', 'zh') as $languageCode) {
         $wfMsgExtOptions['language'] = $languageCode;
         foreach (self::$keyToTestArgs as $key => $testArgs) {
             foreach ($testArgs as $args) {
                 // get the raw template, without any transformations
                 $template = wfMsgGetKey($key, true, $languageCode, false);
                 // get the magic-parsed version with args
                 $wfMsgExtArgs = array_merge(array($key, $wfMsgExtOptions), $args);
                 $result = call_user_func_array('wfMsgExt', $wfMsgExtArgs);
                 // record the template, args, language, and expected result
                 // fake multiple languages by flattening them together
                 $langKey = $languageCode . '_' . $key;
                 $messages[$langKey] = $template;
                 $tests[] = array('name' => $languageCode . " " . $key . " " . join(",", $args), 'key' => $langKey, 'args' => $args, 'result' => $result, 'lang' => $languageCode);
             }
         }
     }
     return array($messages, $tests);
 }

 function __construct($msg, $width, $height)
 {
     $args = array_slice(func_get_args(), 3);
     $htmlArgs = array_map('htmlspecialchars', $args);
     $htmlArgs = array_map('nl2br', $htmlArgs);
     $this->htmlMsg = wfMsgReplaceArgs(htmlspecialchars(wfMsgGetKey($msg, true)), $htmlArgs);
     $this->textMsg = wfMsgReal($msg, $args);
     $this->width = intval($width);
     $this->height = intval($height);
     $this->url = false;
     $this->path = false;
 }

 function getTimeZoneName()
 {
     if (!isset($this->timezoneName)) {
         $tzUser = $this->getTimeZone();
         $tzName = $tzUser->getName();
         if ($tzName == 'UTC') {
             $this->timezoneName = \wfMsgGetKey('utc', true, $this->languageCode);
         } else {
             $tzCityName = ' ';
             $tzRegionName = ' ';
             $tzInfo = explode('/', $tzName);
             $tzRegion = $tzInfo[0];
             $tzCity = $tzInfo[1];
             $tzRegionMsgCode = 'timezoneregion-' . strtolower($tzRegion);
             $tzRegionName = str_replace('_', ' ', \wfMsgGetKey($tzRegionMsgCode, true, $this->languageCode));
             $tzCityName = str_replace('_', ' ', $tzCity);
             if ($this->mwLanguageObj->isRTL()) {
                 $this->timezoneName = $tzCityName . '\\' . $tzRegionName;
             } else {
                 $this->timezoneName = $tzRegionName . '/' . $tzCityName;
             }
         }
     }
     return $this->timezoneName;
 }

 function reallyDoQuery($offset, $limit, $descending)
 {
     $result = new FakeResultWrapper(array());
     $messageNames = $this->getAllMessages($descending);
     $statuses = $this->getCustomisedStatuses($messageNames);
     $count = 0;
     foreach ($messageNames as $key) {
         $customised = isset($statuses['pages'][$key]);
         if ($customised !== $this->custom && ($descending && ($key < $offset || !$offset) || !$descending && $key > $offset) && ($this->prefix && preg_match($this->prefix, $key) || $this->prefix === false)) {
             $result->result[] = array('am_title' => $key, 'am_actual' => wfMsgGetKey($key, true, $this->langcode, false), 'am_default' => wfMsgGetKey($key, false, $this->langcode, false), 'am_customised' => $customised, 'am_talk_exists' => isset($statuses['talks'][$key]));
             $count++;
         }
         if ($count == $limit) {
             break;
         }
     }
     return $result;
 }

 /**
  * Convenience method for retrieving a wfMsgForContent() message.
  * Note: Any additional args not listed in the method signature are passed 
  * forward to the msg resolution function.
  * @param String $msg The system message to use.
  */
 function msg($msg)
 {
     $args = func_get_args();
     array_shift($args);
     return wfMsgReplaceArgs(wfMsgGetKey($this->mMsgPrefix . $msg, true), $args);
 }

/**
 * Returns message in the requested format
 *
 * @deprecated since 1.18
 *
 * @param string $key Key of the message
 * @param array $options Processing rules.
 *   Can take the following options:
 *     parse: parses wikitext to HTML
 *     parseinline: parses wikitext to HTML and removes the surrounding
 *       p's added by parser or tidy
 *     escape: filters message through htmlspecialchars
 *     escapenoentities: same, but allows entity references like   through
 *     replaceafter: parameters are substituted after parsing or escaping
 *     parsemag: transform the message using magic phrases
 *     content: fetch message for content language instead of interface
 *   Also can accept a single associative argument, of the form 'language' => 'xx':
 *     language: Language object or language code to fetch message for
 *       (overridden by content).
 * Behavior for conflicting options (e.g., parse+parseinline) is undefined.
 *
 * @return string
 */
function wfMsgExt($key, $options)
{
    wfDeprecated(__METHOD__, '1.21');
    $args = func_get_args();
    array_shift($args);
    array_shift($args);
    $options = (array) $options;
    $validOptions = array('parse', 'parseinline', 'escape', 'escapenoentities', 'replaceafter', 'parsemag', 'content');
    foreach ($options as $arrayKey => $option) {
        if (!preg_match('/^[0-9]+|language$/', $arrayKey)) {
            // An unknown index, neither numeric nor "language"
            wfWarn("wfMsgExt called with incorrect parameter key {$arrayKey}", 1, E_USER_WARNING);
        } elseif (preg_match('/^[0-9]+$/', $arrayKey) && !in_array($option, $validOptions)) {
            // A numeric index with unknown value
            wfWarn("wfMsgExt called with incorrect parameter {$option}", 1, E_USER_WARNING);
        }
    }
    if (in_array('content', $options, true)) {
        $forContent = true;
        $langCode = true;
        $langCodeObj = null;
    } elseif (array_key_exists('language', $options)) {
        $forContent = false;
        $langCode = wfGetLangObj($options['language']);
        $langCodeObj = $langCode;
    } else {
        $forContent = false;
        $langCode = false;
        $langCodeObj = null;
    }
    $string = wfMsgGetKey($key, true, $langCode, false);
    if (!in_array('replaceafter', $options, true)) {
        $string = wfMsgReplaceArgs($string, $args);
    }
    $messageCache = MessageCache::singleton();
    $parseInline = in_array('parseinline', $options, true);
    if (in_array('parse', $options, true) || $parseInline) {
        $string = $messageCache->parse($string, null, true, !$forContent, $langCodeObj);
        if ($string instanceof ParserOutput) {
            $string = $string->getText();
        }
        if ($parseInline) {
            $string = Parser::stripOuterParagraph($string);
        }
    } elseif (in_array('parsemag', $options, true)) {
        $string = $messageCache->transform($string, !$forContent, $langCodeObj);
    }
    if (in_array('escape', $options, true)) {
        $string = htmlspecialchars($string);
    } elseif (in_array('escapenoentities', $options, true)) {
        $string = Sanitizer::escapeHtmlAllowEntities($string);
    }
    if (in_array('replaceafter', $options, true)) {
        $string = wfMsgReplaceArgs($string, $args);
    }
    return $string;
}

 /**
  * Get messages for a given package as key => value structure
  *
  * Resolve messages list (entries matching "feature-*" pattern)
  *
  * @param string $name - name of the messages package
  * @param boolean $allowWildcards - can packages with wildcard be added?
  * @return array - key/value array of messages
  */
 private static function getPackage($name, $allowWildcards = true)
 {
     wfProfileIn(__METHOD__);
     $ret = null;
     if (isset(self::$packages[$name])) {
         self::log(__METHOD__, $name);
         // get messages
         $messages = self::$packages[$name];
         $ret = array();
         foreach ($messages as $message) {
             // pattern to match messages (e.g. "feature-*")
             if (substr($message, -1) == '*') {
                 // BugId:18482
                 if ($allowWildcards) {
                     $msgs = self::resolveMessagesPattern($message);
                     if (!empty($msgs)) {
                         $ret = array_merge($ret, $msgs);
                     }
                 } else {
                     Wikia::logBacktrace(__METHOD__);
                     wfProfileOut(__METHOD__);
                     trigger_error("JSMessages: '{$name}' package with wildcard matching can only be used in EXTERNAL mode", E_USER_ERROR);
                     return;
                 }
             } else {
                 //@todo - this removes the {{PLURAL prefix, so plurals won't work in JS
                 //on the other hand we cannot simply set $transform to true, as we want the wiki links to be parsed
                 $msg = wfMsgGetKey($message, true);
                 // check for not existing message
                 if ($msg == htmlspecialchars("<{$message}>")) {
                     $msg = false;
                 }
                 $ret[$message] = $msg;
             }
         }
     }
     wfProfileOut(__METHOD__);
     return $ret;
 }

 /**
  * Updates an array of messages with the wfMsgGetKey value
  *
  * @param {Array} $jmsg Associative array of message key -> message value pairs
  * @param {String} $langCode Language code override
  */
 public static function updateMessageValues(&$messegeArray, $langCode = false)
 {
     global $wgLang;
     // Check the langCode
     if (!$langCode && $wgLang) {
         $langCode = $wgLang->getCode();
     }
     // Get the msg keys for the a json array
     foreach ($messegeArray as $msgKey => $na) {
         // Language codes use dash instead of underscore internally
         $msgLangCode = str_replace('_', '-', $langCode);
         $messegeArray[$msgKey] = wfMsgGetKey($msgKey, true, $msgLangCode, false);
     }
 }

function wfMsgReal($key, $args)
{
    $message = wfMsgGetKey($key);
    $message = wfMsgReplaceArgs($message, $args);
    return $message;
}

/**
 * Returns message in the requested format
 * @param string $key Key of the message
 * @param array $options Processing rules:
 *  <i>parse<i>: parses wikitext to html
 *  <i>parseinline<i>: parses wikitext to html and removes the surrounding p's added by parser or tidy
 *  <i>escape<i>: filters message trough htmlspecialchars
 *  <i>replaceafter<i>: parameters are substituted after parsing or escaping
 *  <i>parsemag<i>: ??
 */
function wfMsgExt($key, $options)
{
    global $wgOut, $wgParser;
    $args = func_get_args();
    array_shift($args);
    array_shift($args);
    if (!is_array($options)) {
        $options = array($options);
    }
    $string = wfMsgGetKey($key, true, false, false);
    if (!in_array('replaceafter', $options)) {
        $string = wfMsgReplaceArgs($string, $args);
    }
    if (in_array('parse', $options)) {
        $string = $wgOut->parse($string, true, true);
    } elseif (in_array('parseinline', $options)) {
        $string = $wgOut->parse($string, true, true);
        $m = array();
        if (preg_match("~^<p>(.*)\n?</p>\$~", $string, $m)) {
            $string = $m[1];
        }
    } elseif (in_array('parsemag', $options)) {
        global $wgMessageCache;
        if (isset($wgMessageCache)) {
            $string = $wgMessageCache->transform($string);
        }
    }
    if (in_array('escape', $options)) {
        $string = htmlspecialchars($string);
    }
    if (in_array('replaceafter', $options)) {
        $string = wfMsgReplaceArgs($string, $args);
    }
    return $string;
}

 /**
  * Returns message in the requested format after parsing wikitext to html
  * This is meant to be equivalent to wfMsgExt() with parse, parsemag and escape as available options but using the DPL2 local parser instead of the global one (bugfix).
  */
 function msgExt($key, $options)
 {
     $args = func_get_args();
     array_shift($args);
     array_shift($args);
     if (!is_array($options)) {
         $options = array($options);
     }
     $string = wfMsgGetKey($key, true, false, false);
     $string = wfMsgReplaceArgs($string, $args);
     if (in_array('parse', $options)) {
         $this->mParserOptions->setInterfaceMessage(true);
         $string = $this->mParser->recursiveTagParse($string);
         $this->mParserOptions->setInterfaceMessage(false);
         //$string = $parserOutput->getText();
     } elseif (in_array('parsemag', $options)) {
         $parser = ParserPool::create();
         # Wikia
         $parserOptions = new ParserOptions();
         $parserOptions->setInterfaceMessage(true);
         $parser->startExternalParse($this->mParserTitle, $parserOptions, OT_MSG);
         $string = $parser->transformMsg($string, $parserOptions);
     }
     if (in_array('escape', $options)) {
         $string = htmlspecialchars($string);
     }
     return $string;
 }

/**
 * Returns message in the requested format
 * @param $key String: key of the message
 * @param $options Array: processing rules. Can take the following options:
 *   <i>parse</i>: parses wikitext to HTML
 *   <i>parseinline</i>: parses wikitext to HTML and removes the surrounding
 *       p's added by parser or tidy
 *   <i>escape</i>: filters message through htmlspecialchars
 *   <i>escapenoentities</i>: same, but allows entity references like &#160; through
 *   <i>replaceafter</i>: parameters are substituted after parsing or escaping
 *   <i>parsemag</i>: transform the message using magic phrases
 *   <i>content</i>: fetch message for content language instead of interface
 * Also can accept a single associative argument, of the form 'language' => 'xx':
 *   <i>language</i>: Language object or language code to fetch message for
 *       (overriden by <i>content</i>).
 * Behavior for conflicting options (e.g., parse+parseinline) is undefined.
 *
 * @return String
 */
function wfMsgExt($key, $options)
{
    $args = func_get_args();
    array_shift($args);
    array_shift($args);
    $options = (array) $options;
    foreach ($options as $arrayKey => $option) {
        if (!preg_match('/^[0-9]+|language$/', $arrayKey)) {
            # An unknown index, neither numeric nor "language"
            wfWarn("wfMsgExt called with incorrect parameter key {$arrayKey}", 1, E_USER_WARNING);
        } elseif (preg_match('/^[0-9]+$/', $arrayKey) && !in_array($option, array('parse', 'parseinline', 'escape', 'escapenoentities', 'replaceafter', 'parsemag', 'content'))) {
            # A numeric index with unknown value
            wfWarn("wfMsgExt called with incorrect parameter {$option}", 1, E_USER_WARNING);
        }
    }
    if (in_array('content', $options, true)) {
        $forContent = true;
        $langCode = true;
        $langCodeObj = null;
    } elseif (array_key_exists('language', $options)) {
        $forContent = false;
        $langCode = wfGetLangObj($options['language']);
        $langCodeObj = $langCode;
    } else {
        $forContent = false;
        $langCode = false;
        $langCodeObj = null;
    }
    $string = wfMsgGetKey($key, true, $langCode, false);
    if (!in_array('replaceafter', $options, true)) {
        $string = wfMsgReplaceArgs($string, $args);
    }
    $messageCache = MessageCache::singleton();
    if (in_array('parse', $options, true)) {
        $string = $messageCache->parse($string, null, true, !$forContent, $langCodeObj)->getText();
    } elseif (in_array('parseinline', $options, true)) {
        $string = $messageCache->parse($string, null, true, !$forContent, $langCodeObj)->getText();
        $m = array();
        if (preg_match('/^<p>(.*)\\n?<\\/p>\\n?$/sU', $string, $m)) {
            $string = $m[1];
        }
    } elseif (in_array('parsemag', $options, true)) {
        $string = $messageCache->transform($string, !$forContent, $langCodeObj);
    }
    if (in_array('escape', $options, true)) {
        $string = htmlspecialchars($string);
    } elseif (in_array('escapenoentities', $options, true)) {
        $string = Sanitizer::escapeHtmlAllowEntities($string);
    }
    if (in_array('replaceafter', $options, true)) {
        $string = wfMsgReplaceArgs($string, $args);
    }
    return $string;
}

/**
 * Really get a message
 * @return $key String: key to get.
 * @return $args
 * @return $useDB Boolean
 * @return String: the requested message.
 */
function wfMsgReal($key, $args, $useDB = true, $forContent = false, $transform = true)
{
    $fname = 'wfMsgReal';
    $message = wfMsgGetKey($key, $useDB, $forContent, $transform);
    $message = wfMsgReplaceArgs($message, $args);
    return $message;
}

/**
 * Return an HTML-escaped version of a message.
 * Parameter replacements, if any, are done *after* the HTML-escaping,
 * so parameters may contain HTML (eg links or form controls). Be sure
 * to pre-escape them if you really do want plaintext, or just wrap
 * the whole thing in htmlspecialchars().
 *
 * @param string $key
 * @param string ... parameters
 * @return string
 */
function wfMsgHtml($key)
{
    $args = func_get_args();
    array_shift($args);
    return wfMsgReplaceArgs(htmlspecialchars(wfMsgGetKey($key, true)), $args);
}

/**
 * Returns message in the requested format
 * @param string $key Key of the message
 * @param array $options Processing rules:
 *  <i>parse<i>: parses wikitext to html
 *  <i>parseinline<i>: parses wikitext to html and removes the surrounding p's added by parser or tidy
 *  <i>escape<i>: filters message trough htmlspecialchars
 *  <i>replaceafter<i>: parameters are substituted after parsing or escaping
 */
function wfMsgExt($key, $options)
{
    global $wgOut, $wgMsgParserOptions, $wgParser;
    $args = func_get_args();
    array_shift($args);
    array_shift($args);
    if (!is_array($options)) {
        $options = array($options);
    }
    $string = wfMsgGetKey($key, true, false, false);
    if (!in_array('replaceafter', $options)) {
        $string = wfMsgReplaceArgs($string, $args);
    }
    if (in_array('parse', $options)) {
        $string = $wgOut->parse($string, true, true);
    } elseif (in_array('parseinline', $options)) {
        $string = $wgOut->parse($string, true, true);
        $m = array();
        if (preg_match("~^<p>(.*)\n?</p>\$~", $string, $m)) {
            $string = $m[1];
        }
    } elseif (in_array('parsemag', $options)) {
        global $wgTitle;
        $parser = new Parser();
        $parserOptions = new ParserOptions();
        $parserOptions->setInterfaceMessage(true);
        $parser->startExternalParse($wgTitle, $parserOptions, OT_MSG);
        $string = $parser->transformMsg($string, $parserOptions);
    }
    if (in_array('escape', $options)) {
        $string = htmlspecialchars($string);
    }
    if (in_array('replaceafter', $options)) {
        $string = wfMsgReplaceArgs($string, $args);
    }
    return $string;
}

 /**
  * Note that getContent/loadContent do not follow redirects anymore.
  * If you need to fetch redirectable content easily, try
  * the shortcut in Article::followRedirect()
  *
  * This function has side effects! Do not use this function if you
  * only want the real revision text if any.
  *
  * @return Return the text of this revision
  */
 public function getContent()
 {
     global $wgUser, $wgContLang, $wgMessageCache;
     wfProfileIn(__METHOD__);
     if ($this->getID() === 0) {
         # If this is a MediaWiki:x message, then load the messages
         # and return the message value for x.
         if ($this->mTitle->getNamespace() == NS_MEDIAWIKI) {
             # If this is a system message, get the default text.
             list($message, $lang) = $wgMessageCache->figureMessage($wgContLang->lcfirst($this->mTitle->getText()));
             $text = wfMsgGetKey($message, false, $lang, false);
             if (wfEmptyMsg($message, $text)) {
                 $text = '';
             }
         } else {
             $text = wfMsgExt($wgUser->isLoggedIn() ? 'noarticletext' : 'noarticletextanon', 'parsemag');
         }
         wfProfileOut(__METHOD__);
         return $text;
     } else {
         $this->loadContent();
         wfProfileOut(__METHOD__);
         return $this->mContent;
     }
 }