/**
* Remove a special page from the list
* Formerly used to disable expensive or dangerous special pages. The
* preferred method is now to add a SpecialPage_initList hook.
* @deprecated since 1.18
*
* @param $name String the page to remove
*/
static function removePage($name)
{
wfDeprecated(__METHOD__, '1.18');
unset(SpecialPageFactory::getList()->{$name});
}
protected function appendSpecialPageAliases($property)
{
global $wgContLang;
$data = array();
$aliases = $wgContLang->getSpecialPageAliases();
foreach (SpecialPageFactory::getList() as $specialpage => $stuff) {
if (isset($aliases[$specialpage])) {
$arr = array('realname' => $specialpage, 'aliases' => $aliases[$specialpage]);
$this->getResult()->setIndexedTagName($arr['aliases'], 'alias');
$data[] = $arr;
}
}
$this->getResult()->setIndexedTagName($data, 'specialpage');
return $this->getResult()->addValue('query', $property, $data);
}
/**
* Prefix search special-case for Special: namespace.
*
* @param $search String: term
* @param $limit Integer: max number of items to return
* @return Array
*/
protected static function specialSearch($search, $limit)
{
global $wgContLang;
# normalize searchKey, so aliases with spaces can be found - bug 25675
$search = str_replace(' ', '_', $search);
$searchKey = $wgContLang->caseFold($search);
// Unlike SpecialPage itself, we want the canonical forms of both
// canonical and alias title forms...
$keys = array();
foreach (SpecialPageFactory::getList() as $page => $class) {
$keys[$wgContLang->caseFold($page)] = $page;
}
foreach ($wgContLang->getSpecialPageAliases() as $page => $aliases) {
if (!array_key_exists($page, SpecialPageFactory::getList())) {
# bug 20885
continue;
}
foreach ($aliases as $alias) {
$keys[$wgContLang->caseFold($alias)] = $alias;
}
}
ksort($keys);
$srchres = array();
foreach ($keys as $pageKey => $page) {
if ($searchKey === '' || strpos($pageKey, $searchKey) === 0) {
wfSuppressWarnings();
// bug 27671: Don't use SpecialPage::getTitleFor() here because it
// localizes its input leading to searches for e.g. Special:All
// returning Spezial:MediaWiki-Systemnachrichten and returning
// Spezial:Alle_Seiten twice when $wgLanguageCode == 'de'
$srchres[] = Title::makeTitleSafe(NS_SPECIAL, $page)->getPrefixedText();
wfRestoreWarnings();
}
if (count($srchres) >= $limit) {
break;
}
}
return $srchres;
}
function getLinkSuggest()
{
global $wgRequest, $wgContLang, $wgCityId, $wgExternalDatawareDB, $wgContentNamespaces, $wgMemc, $wgLinkSuggestLimit;
wfProfileIn(__METHOD__);
$isMobile = F::app()->checkSkin('wikiamobile');
// trim passed query and replace spaces by underscores
// - this is how MediaWiki store article titles in database
$query = urldecode(trim($wgRequest->getText('query')));
$query = str_replace(' ', '_', $query);
if ($isMobile) {
$key = wfMemcKey(__METHOD__, md5($query . '_' . $wgRequest->getText('format') . $wgRequest->getText('nospecial', '')), 'WikiaMobile');
} else {
$key = wfMemcKey(__METHOD__, md5($query . '_' . $wgRequest->getText('format') . $wgRequest->getText('nospecial', '')));
}
if (strlen($query) < 3) {
// enforce minimum character limit on server side
$out = $wgRequest->getText('format') == 'json' ? json_encode(array('suggestions' => array(), 'redirects' => array())) : '';
} else {
if (false && ($cached = $wgMemc->get($key))) {
$out = $cached;
}
}
if (isset($out)) {
return linkSuggestAjaxResponse($out);
}
// Allow the calling-code to specify a namespace to search in (which at the moment, could be overridden by having prefixed text in the input field).
// NOTE: This extension does parse titles to try to find things in other namespaces, but that actually doesn't work in practice because jQuery
// Autocomplete will stop making requests after it finds 0 results. So if you start to type "Category" and there is no page beginning
// with "Cate", it will not even make the call to LinkSuggest.
$namespace = $wgRequest->getVal('ns');
// explode passed query by ':' to get namespace and article title
$queryParts = explode(':', $query, 2);
if (count($queryParts) == 2) {
$query = $queryParts[1];
$namespaceName = $queryParts[0];
// try to get the index by canonical name first
$namespace = MWNamespace::getCanonicalIndex(strtolower($namespaceName));
if ($namespace == null) {
// if we failed, try looking through localized namespace names
$namespace = array_search(ucfirst($namespaceName), $wgContLang->getNamespaces());
if (empty($namespace)) {
// getting here means our "namespace" is not real and can only be part of the title
$query = $namespaceName . ':' . $query;
}
}
if ($namespace !== null && $query === '') {
$out = $wgRequest->getText('format') == 'json' ? json_encode(array('suggestions' => array(), 'redirects' => array())) : '';
return linkSuggestAjaxResponse($out);
}
}
// which namespaces to search in?
if (empty($namespace)) {
// search only within content namespaces (BugId:4625) - default behaviour
$namespaces = $wgContentNamespaces;
} else {
// search only within a given namespace
$namespaces = array($namespace);
}
$query = addslashes($query);
$db = wfGetDB(DB_SLAVE, 'search');
$redirects = array();
$results = array();
$exactMatchRow = null;
$queryLower = strtolower($query);
$res = $db->select(array('querycache', 'page'), array('page_namespace', 'page_title', 'page_is_redirect'), array('qc_title = page_title', 'qc_namespace = page_namespace', 'page_is_redirect = 0', 'qc_type' => 'Mostlinked', "(qc_title LIKE '{$query}%' or LOWER(qc_title) LIKE '{$queryLower}%')", 'qc_namespace' => $namespaces), __METHOD__, array('ORDER BY' => 'qc_value DESC', 'LIMIT' => $wgLinkSuggestLimit));
linkSuggestFormatResults($db, $res, $query, $redirects, $results, $exactMatchRow);
if (count($namespaces) > 0) {
$commaJoinedNamespaces = count($namespaces) > 1 ? array_shift($namespaces) . ', ' . implode(', ', $namespaces) : $namespaces[0];
}
$pageNamespaceClause = isset($commaJoinedNamespaces) ? 'page_namespace IN (' . $commaJoinedNamespaces . ') AND ' : '';
if (count($results) < $wgLinkSuggestLimit) {
$sql = "SELECT page_len, page_id, page_title, rd_title, page_namespace, page_is_redirect\n\n\t\t\t\tFROM page IGNORE INDEX (`name_title`)\n\n\t\t\t\tLEFT JOIN redirect ON page_is_redirect = 1 AND page_id = rd_from\n\n\t\t\t\tWHERE {$pageNamespaceClause} (page_title LIKE '{$query}%' or LOWER(page_title) LIKE '{$queryLower}%')\n\n\t\t\t\tLIMIT " . $wgLinkSuggestLimit * 3;
$res = $db->query($sql);
linkSuggestFormatResults($db, $res, $query, $redirects, $results, $exactMatchRow);
}
if ($exactMatchRow !== null) {
$row = $exactMatchRow;
$titleFormatted = wfLinkSuggestFormatTitle($row->page_namespace, $row->page_title);
if ($row->page_is_redirect == 0) {
// remove any instances of original array's value
$resultsFlipped = array_flip($results);
unset($resultsFlipped[$titleFormatted]);
$results = array_flip($resultsFlipped);
array_unshift($results, $titleFormatted);
$flippedRedirs = array_flip($redirects);
if (isset($flippedRedirs[$titleFormatted])) {
unset($redirects[$flippedRedirs[$titleFormatted]]);
}
} else {
$redirTitleFormatted = wfLinkSuggestFormatTitle($row->page_namespace, $row->rd_title);
// remove any instances of original array's value
$resultsFlipped = array_flip($results);
unset($resultsFlipped[$redirTitleFormatted]);
$results = array_flip($resultsFlipped);
array_unshift($results, $redirTitleFormatted);
$redirects[$redirTitleFormatted] = $titleFormatted;
}
}
$db->freeResult($res);
if ($wgRequest->getText('nospecial', 0) != 1) {
// bugid 29988: include special pages
// (registered in SpecialPage::$mList, not in the DB like a normal page)
if ($namespaces == array('-1') && strlen($query) > 0) {
$specialPagesByAlpha = SpecialPageFactory::getList();
$specialPagesByAlpha = get_object_vars($specialPagesByAlpha);
ksort($specialPagesByAlpha, SORT_STRING);
array_walk($specialPagesByAlpha, function ($val, $key) use(&$results, $query) {
if (strtolower(substr($key, 0, strlen($query))) === strtolower($query)) {
$results[] = wfLinkSuggestFormatTitle('-1', $key);
}
});
}
}
$format = $wgRequest->getText('format');
if ($format == 'json') {
$result_values = array_values($results);
if ($isMobile) {
$out = json_encode(array(array_splice($result_values, 0, 10), array_splice($redirects, -1, 1)));
} else {
$out = json_encode(array('query' => $wgRequest->getText('query'), 'suggestions' => $result_values, 'redirects' => $redirects));
}
// legacy: LinkSuggest.js uses this
} else {
// Overwrite canonical title with redirect title
for ($i = 0; $i < count($results); $i++) {
if (isset($redirects[$results[$i]])) {
$results[$i] = $redirects[$results[$i]];
}
}
$out = implode("\n", $results);
}
// 15 minutes times four (one hour, but easier to slice and dice)
$wgMemc->set($key, $out, 4 * 900);
wfProfileOut(__METHOD__);
return linkSuggestAjaxResponse($out);
}
/**
* Remove a special page from the list
* Formerly used to disable expensive or dangerous special pages. The
* preferred method is now to add a SpecialPage_initList hook.
* @deprecated since 1.18
*
* @param $name String the page to remove
*/
static function removePage($name)
{
unset(SpecialPageFactory::getList()->{$name});
}
/**
* Prefix search special-case for Special: namespace.
*
* @param string $search Term
* @param int $limit Max number of items to return
* @return array
*/
protected function specialSearch($search, $limit)
{
global $wgContLang;
$searchParts = explode('/', $search, 2);
$searchKey = $searchParts[0];
$subpageSearch = isset($searchParts[1]) ? $searchParts[1] : null;
// Handle subpage search separately.
if ($subpageSearch !== null) {
// Try matching the full search string as a page name
$specialTitle = Title::makeTitleSafe(NS_SPECIAL, $searchKey);
if (!$specialTitle) {
return array();
}
$special = SpecialPageFactory::getPage($specialTitle->getText());
if ($special) {
$subpages = $special->prefixSearchSubpages($subpageSearch, $limit);
return array_map(function ($sub) use($specialTitle) {
return $specialTitle->getSubpage($sub);
}, $subpages);
} else {
return array();
}
}
# normalize searchKey, so aliases with spaces can be found - bug 25675
$searchKey = str_replace(' ', '_', $searchKey);
$searchKey = $wgContLang->caseFold($searchKey);
// Unlike SpecialPage itself, we want the canonical forms of both
// canonical and alias title forms...
$keys = array();
foreach (SpecialPageFactory::getList() as $page => $class) {
$keys[$wgContLang->caseFold($page)] = $page;
}
foreach ($wgContLang->getSpecialPageAliases() as $page => $aliases) {
if (!array_key_exists($page, SpecialPageFactory::getList())) {
# bug 20885
continue;
}
foreach ($aliases as $alias) {
$keys[$wgContLang->caseFold($alias)] = $alias;
}
}
ksort($keys);
$srchres = array();
foreach ($keys as $pageKey => $page) {
if ($searchKey === '' || strpos($pageKey, $searchKey) === 0) {
// bug 27671: Don't use SpecialPage::getTitleFor() here because it
// localizes its input leading to searches for e.g. Special:All
// returning Spezial:MediaWiki-Systemnachrichten and returning
// Spezial:Alle_Seiten twice when $wgLanguageCode == 'de'
$srchres[] = Title::makeTitleSafe(NS_SPECIAL, $page);
}
if (count($srchres) >= $limit) {
break;
}
}
return $srchres;
}
/**
* Get a list of suggested titles
*
* @param WebRequest $request
* @return bool|Object|string
*
* @author Inez Korczyński <*****@*****.**>
* @author Robert Elwell <*****@*****.**>
*/
static function getLinkSuggest(WebRequest $request)
{
global $wgContLang, $wgContentNamespaces, $wgMemc, $wgLinkSuggestLimit;
$measurement = T::start(__FUNCTION__);
wfProfileIn(__METHOD__);
$isMobile = F::app()->checkSkin('wikiamobile');
// trim passed query and replace spaces by underscores
// - this is how MediaWiki store article titles in database
$query = urldecode(trim($request->getText('query')));
$query = str_replace(' ', '_', $query);
if ($isMobile) {
$key = wfMemcKey(__METHOD__, md5($query . '_' . $request->getText('format') . $request->getText('nospecial', '')), 'WikiaMobile');
} else {
$key = wfMemcKey(__METHOD__, md5($query . '_' . $request->getText('format') . $request->getText('nospecial', '')));
}
if (strlen($query) < 3) {
// enforce minimum character limit on server side
$out = self::getEmptyResponse($request->getText('format'));
} else {
if ($cached = $wgMemc->get($key)) {
$out = $cached;
}
}
if (isset($out)) {
wfProfileOut(__METHOD__);
return $out;
}
// Allow the calling-code to specify a namespace to search in (which at the moment, could be overridden by having prefixed text in the input field).
// NOTE: This extension does parse titles to try to find things in other namespaces, but that actually doesn't work in practice because jQuery
// Autocomplete will stop making requests after it finds 0 results. So if you start to type "Category" and there is no page beginning
// with "Cate", it will not even make the call to LinkSuggest.
$namespace = $request->getVal('ns');
// explode passed query by ':' to get namespace and article title
$queryParts = explode(':', $query, 2);
if (count($queryParts) == 2) {
$query = $queryParts[1];
$namespaceName = $queryParts[0];
// try to get the index by canonical name first
$namespace = MWNamespace::getCanonicalIndex(strtolower($namespaceName));
if ($namespace == null) {
// if we failed, try looking through localized namespace names
$namespace = array_search(ucfirst($namespaceName), $wgContLang->getNamespaces());
if (empty($namespace)) {
// getting here means our "namespace" is not real and can only be part of the title
$query = $namespaceName . ':' . $query;
}
}
if ($namespace !== null && $query === '') {
$out = self::getEmptyResponse($request->getText('format'));
wfProfileOut(__METHOD__);
return $out;
}
}
// which namespaces to search in?
if (empty($namespace)) {
// search only within content namespaces (BugId:4625) - default behaviour
$namespaces = $wgContentNamespaces;
} else {
// search only within a given namespace
$namespaces = array($namespace);
}
//limit the result only to this namespace
$namespaceFilter = $request->getVal('nsfilter');
if (strlen($namespaceFilter) > 0) {
$namespaces = array($namespaceFilter);
}
if (!empty($namespaceFilter) && $namespace != $namespaceFilter) {
$out = self::getEmptyResponse($request->getText('format'));
wfProfileOut(__METHOD__);
return $out;
}
$query = addslashes($query);
$db = wfGetDB(DB_SLAVE, 'search');
$redirects = array();
$results = array();
$exactMatchRow = null;
$queryLower = strtolower($query);
$sql1Measurement = T::start([__FUNCTION__, "sql-1"]);
$res = $db->select(array('querycache', 'page'), array('page_namespace', 'page_title', 'page_is_redirect'), array('qc_title = page_title', 'qc_namespace = page_namespace', 'page_is_redirect = 0', 'qc_type' => 'Mostlinked', "(qc_title LIKE '{$query}%' or LOWER(qc_title) LIKE '{$queryLower}%')", 'qc_namespace' => $namespaces), __METHOD__, array('ORDER BY' => 'qc_value DESC', 'LIMIT' => $wgLinkSuggestLimit));
self::formatResults($db, $res, $query, $redirects, $results, $exactMatchRow);
$sql1Measurement->stop();
if (count($namespaces) > 0) {
$commaJoinedNamespaces = count($namespaces) > 1 ? array_shift($namespaces) . ', ' . implode(', ', $namespaces) : $namespaces[0];
}
$pageNamespaceClause = isset($commaJoinedNamespaces) ? 'page_namespace IN (' . $commaJoinedNamespaces . ') AND ' : '';
if (count($results) < $wgLinkSuggestLimit) {
/**
* @var string $pageTitlePrefilter this condition is able to use name_title index. It's added only for performance reasons.
* It uses fact that page titles can't start with lowercase letter.
*/
$pageTitlePrefilter = "";
if (strlen($queryLower) >= 2) {
$pageTitlePrefilter = "(\n\t\t\t\t\t\t\t( page_title " . $db->buildLike(strtoupper($queryLower[0]) . strtolower($queryLower[1]), $db->anyString()) . " ) OR\n\t\t\t\t\t\t\t( page_title " . $db->buildLike(strtoupper($queryLower[0]) . strtoupper($queryLower[1]), $db->anyString()) . " ) ) AND ";
} else {
if (strlen($queryLower) >= 1) {
$pageTitlePrefilter = "( page_title " . $db->buildLike(strtoupper($queryLower[0]), $db->anyString()) . " ) AND ";
}
}
// TODO: use $db->select helper method
$sql = "SELECT page_len, page_id, page_title, rd_title, page_namespace, rd_namespace, page_is_redirect\n\t\t\t\t\t\tFROM page\n\t\t\t\t\t\tLEFT JOIN redirect ON page_is_redirect = 1 AND page_id = rd_from\n\t\t\t\t\t\tLEFT JOIN querycache ON qc_title = page_title AND qc_type = 'BrokenRedirects'\n\t\t\t\t\t\tWHERE {$pageTitlePrefilter} {$pageNamespaceClause} (LOWER(page_title) LIKE '{$queryLower}%')\n\t\t\t\t\t\t\tAND qc_type IS NULL\n\t\t\t\t\t\tLIMIT " . $wgLinkSuggestLimit * 3;
// we fetch 3 times more results to leave out redirects to the same page
$sql2Measurement = T::start([__FUNCTION__, "sql-2"]);
$res = $db->query($sql, __METHOD__);
self::formatResults($db, $res, $query, $redirects, $results, $exactMatchRow);
$sql2Measurement->stop();
}
if ($exactMatchRow !== null) {
/* @var StdClass $exactMatchRow */
$row = $exactMatchRow;
$titleFormatted = self::formatTitle($row->page_namespace, $row->page_title);
if ($row->page_is_redirect == 0) {
// remove any instances of original array's value
$resultsFlipped = array_flip($results);
unset($resultsFlipped[$titleFormatted]);
$results = array_flip($resultsFlipped);
array_unshift($results, $titleFormatted);
$flippedRedirs = array_flip($redirects);
if (isset($flippedRedirs[$titleFormatted])) {
unset($redirects[$flippedRedirs[$titleFormatted]]);
}
} else {
$redirTitleFormatted = self::formatTitle($row->page_namespace, $row->rd_title);
// remove any instances of original array's value
$resultsFlipped = array_flip($results);
unset($resultsFlipped[$redirTitleFormatted]);
$results = array_flip($resultsFlipped);
array_unshift($results, $redirTitleFormatted);
$redirects[$redirTitleFormatted] = $titleFormatted;
}
}
$db->freeResult($res);
if ($request->getText('nospecial', 0) != 1) {
// bugid 29988: include special pages
// (registered in SpecialPage::$mList, not in the DB like a normal page)
if ($namespaces == array('-1') && strlen($query) > 0) {
$specialPagesByAlpha = SpecialPageFactory::getList();
$specialPagesByAlpha = get_object_vars($specialPagesByAlpha);
ksort($specialPagesByAlpha, SORT_STRING);
array_walk($specialPagesByAlpha, function ($val, $key) use(&$results, $query) {
if (strtolower(substr($key, 0, strlen($query))) === strtolower($query)) {
$results[] = self::formatTitle('-1', $key);
}
});
}
}
// Overwrite canonical title with redirect title for all formats
self::replaceResultIfRedirected($results, $redirects);
$format = $request->getText('format');
if ($format == 'json') {
$result_values = array_values($results);
if ($isMobile) {
$out = json_encode(array(array_splice($result_values, 0, 10), array_splice($redirects, -1, 1)));
} else {
$out = json_encode(array('query' => $request->getText('query'), 'suggestions' => $result_values, 'redirects' => $redirects));
}
} elseif ($format == 'array') {
$out = $results;
} else {
// legacy: LinkSuggest.js uses plain text
$out = implode("\n", $results);
}
// 15 minutes times four (one hour, but easier to slice and dice)
$wgMemc->set($key, $out, 4 * 900);
wfProfileOut(__METHOD__);
return $out;
}
