function __construct($type, $key)
{
$this->poolCounter = PoolCounter::factory($type, $key);
}
/**
* This is the default action of the index.php entry point: just view the
* page of the given title.
*/
public function view()
{
global $wgUser, $wgOut, $wgRequest, $wgContLang;
global $wgEnableParserCache, $wgStylePath, $wgParser;
global $wgUseTrackbacks, $wgUseFileCache;
wfProfileIn(__METHOD__);
# Get variables from query string
$oldid = $this->getOldID();
$parserCache = ParserCache::singleton();
$parserOptions = clone $this->getParserOptions();
# Render printable version, use printable version cache
if ($wgOut->isPrintable()) {
$parserOptions->setIsPrintable(true);
}
# Try client and file cache
if ($oldid === 0 && $this->checkTouched()) {
global $wgUseETag;
if ($wgUseETag) {
$wgOut->setETag($parserCache->getETag($this, $parserOptions));
}
# Is is client cached?
if ($wgOut->checkLastModified($this->getTouched())) {
wfDebug(__METHOD__ . ": done 304\n");
wfProfileOut(__METHOD__);
return;
# Try file cache
} else {
if ($wgUseFileCache && $this->tryFileCache()) {
wfDebug(__METHOD__ . ": done file cache\n");
# tell wgOut that output is taken care of
$wgOut->disable();
$this->viewUpdates();
wfProfileOut(__METHOD__);
return;
}
}
}
$sk = $wgUser->getSkin();
# getOldID may want us to redirect somewhere else
if ($this->mRedirectUrl) {
$wgOut->redirect($this->mRedirectUrl);
wfDebug(__METHOD__ . ": redirecting due to oldid\n");
wfProfileOut(__METHOD__);
return;
}
$wgOut->setArticleFlag(true);
# Set page title (may be overridden by DISPLAYTITLE)
$wgOut->setPageTitle($this->mTitle->getPrefixedText());
# If we got diff in the query, we want to see a diff page instead of the article.
if (!is_null($wgRequest->getVal('diff'))) {
wfDebug(__METHOD__ . ": showing diff page\n");
$this->showDiffPage();
wfProfileOut(__METHOD__);
return;
}
# Should the parser cache be used?
$useParserCache = $this->useParserCache($oldid);
wfDebug('Article::view using parser cache: ' . ($useParserCache ? 'yes' : 'no') . "\n");
if ($wgUser->getOption('stubthreshold')) {
wfIncrStats('pcache_miss_stub');
}
$wasRedirected = $this->showRedirectedFromHeader();
$this->showNamespaceHeader();
# Iterate through the possible ways of constructing the output text.
# Keep going until $outputDone is set, or we run out of things to do.
$pass = 0;
$outputDone = false;
$this->mParserOutput = false;
while (!$outputDone && ++$pass) {
switch ($pass) {
case 1:
wfRunHooks('ArticleViewHeader', array(&$this, &$outputDone, &$useParserCache));
break;
case 2:
# Try the parser cache
if ($useParserCache) {
$this->mParserOutput = $parserCache->get($this, $parserOptions);
if ($this->mParserOutput !== false) {
wfDebug(__METHOD__ . ": showing parser cache contents\n");
$wgOut->addParserOutput($this->mParserOutput);
# Ensure that UI elements requiring revision ID have
# the correct version information.
$wgOut->setRevisionId($this->mLatest);
$outputDone = true;
}
}
break;
case 3:
$text = $this->getContent();
if ($text === false || $this->getID() == 0) {
wfDebug(__METHOD__ . ": showing missing article\n");
$this->showMissingArticle();
wfProfileOut(__METHOD__);
return;
}
# Another whitelist check in case oldid is altering the title
if (!$this->mTitle->userCanRead()) {
wfDebug(__METHOD__ . ": denied on secondary read check\n");
$wgOut->loginToUse();
$wgOut->output();
$wgOut->disable();
wfProfileOut(__METHOD__);
return;
}
# Are we looking at an old revision
if ($oldid && !is_null($this->mRevision)) {
$this->setOldSubtitle($oldid);
if (!$this->showDeletedRevisionHeader()) {
wfDebug(__METHOD__ . ": cannot view deleted revision\n");
wfProfileOut(__METHOD__);
return;
}
# If this "old" version is the current, then try the parser cache...
if ($oldid === $this->getLatest() && $this->useParserCache(false)) {
$this->mParserOutput = $parserCache->get($this, $parserOptions);
if ($this->mParserOutput) {
wfDebug(__METHOD__ . ": showing parser cache for current rev permalink\n");
$wgOut->addParserOutput($this->mParserOutput);
$wgOut->setRevisionId($this->mLatest);
$this->showViewFooter();
$this->viewUpdates();
wfProfileOut(__METHOD__);
return;
}
}
}
# Ensure that UI elements requiring revision ID have
# the correct version information.
$wgOut->setRevisionId($this->getRevIdFetched());
# Pages containing custom CSS or JavaScript get special treatment
if ($this->mTitle->isCssOrJsPage() || $this->mTitle->isCssJsSubpage()) {
wfDebug(__METHOD__ . ": showing CSS/JS source\n");
$this->showCssOrJsPage();
$outputDone = true;
} else {
if ($rt = Title::newFromRedirectArray($text)) {
wfDebug(__METHOD__ . ": showing redirect=no page\n");
# Viewing a redirect page (e.g. with parameter redirect=no)
# Don't append the subtitle if this was an old revision
$wgOut->addHTML($this->viewRedirect($rt, !$wasRedirected && $this->isCurrent()));
# Parse just to get categories, displaytitle, etc.
$this->mParserOutput = $wgParser->parse($text, $this->mTitle, $parserOptions);
$wgOut->addParserOutputNoText($this->mParserOutput);
$outputDone = true;
}
}
break;
case 4:
# Run the parse, protected by a pool counter
wfDebug(__METHOD__ . ": doing uncached parse\n");
$key = $parserCache->getKey($this, $parserOptions);
$poolCounter = PoolCounter::factory('Article::view', $key);
$dirtyCallback = $useParserCache ? array($this, 'tryDirtyCache') : false;
$status = $poolCounter->executeProtected(array($this, 'doViewParse'), $dirtyCallback);
if (!$status->isOK()) {
# Connection or timeout error
$this->showPoolError($status);
wfProfileOut(__METHOD__);
return;
} else {
$outputDone = true;
}
break;
# Should be unreachable, but just in case...
# Should be unreachable, but just in case...
default:
break 2;
}
}
# Adjust the title if it was set by displaytitle, -{T|}- or language conversion
if ($this->mParserOutput) {
$titleText = $this->mParserOutput->getTitleText();
if (strval($titleText) !== '') {
$wgOut->setPageTitle($titleText);
}
}
# For the main page, overwrite the <title> element with the con-
# tents of 'pagetitle-view-mainpage' instead of the default (if
# that's not empty).
if ($this->mTitle->equals(Title::newMainPage()) && ($m = wfMsgForContent('pagetitle-view-mainpage')) !== '') {
$wgOut->setHTMLTitle($m);
}
# Now that we've filled $this->mParserOutput, we know whether
# there are any __NOINDEX__ tags on the page
$policy = $this->getRobotPolicy('view');
$wgOut->setIndexPolicy($policy['index']);
$wgOut->setFollowPolicy($policy['follow']);
$this->showViewFooter();
$this->viewUpdates();
wfProfileOut(__METHOD__);
}