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<?php
// display.php: fetch page or get default content
rcs_id('$Id: display.php,v 1.75 2007/07/01 09:17:45 rurban Exp $');
require_once('lib/Template.php');
/**
* Extract keywords from Category* links on page.
*/
function GleanKeywords ($page) {
if (!defined('KEYWORDS')) return '';
require_once("lib/TextSearchQuery.php");
$search = new TextSearchQuery(KEYWORDS, true);
$KeywordLinkRegexp = $search->asRegexp();
// iterate over the pagelinks (could be a large number) [15ms on PluginManager]
// or do a titleSearch and check the categories if they are linked?
$links = $page->getPageLinks();
$keywords[] = SplitPagename($page->getName());
while ($link = $links->next()) {
$m = array();
if (preg_match($KeywordLinkRegexp, $link->getName(), $m))
$keywords[] = SplitPagename($m[0]);
}
$keywords[] = WIKI_NAME;
return join(', ', $keywords);
}
/** Make a link back to redirecting page.
*
* @param $pagename string Name of redirecting page.
* @return XmlContent Link to the redirecting page.
*/
function RedirectorLink($pagename) {
$url = WikiURL($pagename, array('redirectfrom' => ''));
return HTML::a(array('class' => 'redirectfrom wiki',
'href' => $url),
$pagename);
}
function actionPage(&$request, $action) {
global $WikiTheme;
$pagename = $request->getArg('pagename');
$version = $request->getArg('version');
$page = $request->getPage();
$revision = $page->getCurrentRevision();
$dbi = $request->getDbh();
$actionpage = $dbi->getPage($action);
$actionrev = $actionpage->getCurrentRevision();
$pagetitle = HTML(fmt("%s: %s",
$actionpage->getName(),
$WikiTheme->linkExistingWikiWord($pagename, false, $version)));
$request->setValidators(array('pageversion' => $revision->getVersion(),
'%mtime' => $revision->get('mtime')));
$request->appendValidators(array('pagerev' => $revision->getVersion(),
'%mtime' => $revision->get('mtime')));
$request->appendValidators(array('actionpagerev' => $actionrev->getVersion(),
'%mtime' => $actionrev->get('mtime')));
$transformedContent = $actionrev->getTransformedContent();
/* Optionally tell google (and others) not to take notice of action pages.
RecentChanges or AllPages might be an exception.
*/
$args = array();
if (GOOGLE_LINKS_NOFOLLOW)
$args = array('ROBOTS_META' => "noindex,nofollow");
/* Handle other formats: So far we had html only.
xml is requested by loaddump, rss is handled by recentchanges,
pdf is a special action, but should be a format to dump multiple pages
if the actionpage plugin returns a pagelist.
rdf and owl are handled by SemanticWeb.
*/
$format = $request->getArg('format');
/* At first the single page formats: html, xml */
if ($pagename == _("LinkDatabase")) {
$template = Template('browse', array('CONTENT' => $transformedContent));
GeneratePage($template, $pagetitle, $revision, $args);
} elseif (!$format or $format == 'html' or $format == 'sidebar' or $format == 'contribs') {
$template = Template('browse', array('CONTENT' => $transformedContent));
GeneratePage($template, $pagetitle, $revision, $args);
} elseif ($format == 'xml') {
$template = Template('browse', array('CONTENT' => $transformedContent));
GeneratePageAsXML($template, $pagetitle, $revision, $args);
} else {
$pagelist = null;
require_once('lib/WikiPlugin.php');
// Then the multi-page formats
// rss (if not already handled by RecentChanges)
// Need the pagelist from the first plugin
foreach($transformedContent->_content as $cached_element) {
if (is_a($cached_element, "Cached_PluginInvocation")) {
$loader = new WikiPluginLoader;
$markup = null;
// return the first found pagelist
$pagelist = $loader->expandPI($cached_element->_pi, $request, $markup, $pagename);
if (is_a($pagelist, 'PageList'))
break;
}
}
if (!$pagelist or !is_a($pagelist, 'PageList')) {
if (!in_array($format, array("rss91","rss2","rss","atom","rdf")))
trigger_error(sprintf("Format %s requires an actionpage returning a pagelist.", $format)
."\n".("Fall back to single page mode"), E_USER_WARNING);
$pagelist = new PageList();
$pagelist->addPage($page);
}
if ($format == 'pdf') {
require_once("lib/pdf.php");
ConvertAndDisplayPdfPageList($request, $pagelist);
// time-sorted RDF la RecentChanges
} elseif (in_array($format, array("rss91","rss2","rss","atom"))) {
$args = $request->getArgs();
if ($pagename == _("RecentChanges")) {
$template->printExpansion($args);
} else {
require_once("lib/plugin/RecentChanges.php");
$plugin = new WikiPlugin_RecentChanges();
return $plugin->format($plugin->getChanges($request->_dbi, $args), $args);
}
} elseif ($format == 'rdf') { // all semantic relations and attributes
require_once("lib/SemanticWeb.php");
$rdf = new RdfWriter($request, $pagelist);
$rdf->format();
} elseif ($format == 'owl') { // or daml?
require_once("lib/SemanticWeb.php");
$rdf = new OwlWriter($request, $pagelist);
$rdf->format();
} else {
$template = Template('browse', array('CONTENT' => $transformedContent));
GeneratePage($template, $pagetitle, $revision, $args);
}
}
$request->checkValidators();
flush();
return '';
}
function displayPage(&$request, $template=false) {
global $WikiTheme;
$pagename = $request->getArg('pagename');
$version = $request->getArg('version');
$page = $request->getPage();
if ($version) {
$revision = $page->getRevision($version);
if (!$revision)
NoSuchRevision($request, $page, $version);
/* Tell Google (and others) to ignore old versions of pages */
$toks['ROBOTS_META'] = "noindex,nofollow";
}
else {
$revision = $page->getCurrentRevision();
}
if (isSubPage($pagename)) {
$pages = explode(SUBPAGE_SEPARATOR, $pagename);
$last_page = array_pop($pages); // deletes last element from array as side-effect
$pageheader = HTML::span(HTML::a(array('href' => WikiURL($pages[0]),
'class' => 'pagetitle'
),
$WikiTheme->maybeSplitWikiWord($pages[0] . SUBPAGE_SEPARATOR)));
$first_pages = $pages[0] . SUBPAGE_SEPARATOR;
array_shift($pages);
foreach ($pages as $p) {
$pageheader->pushContent(HTML::a(array('href' => WikiURL($first_pages . $p),
'class' => 'backlinks'),
$WikiTheme->maybeSplitWikiWord($p . SUBPAGE_SEPARATOR)));
$first_pages .= $p . SUBPAGE_SEPARATOR;
}
$backlink = HTML::a(array('href' => WikiURL($pagename,
array('action' => _("BackLinks"))),
'class' => 'backlinks'),
$WikiTheme->maybeSplitWikiWord($last_page));
$backlink->addTooltip(sprintf(_("BackLinks for %s"), $pagename));
$pageheader->pushContent($backlink);
} else {
$pageheader = HTML::a(array('href' => WikiURL($pagename,
array('action' => _("BackLinks"))),
'class' => 'backlinks'),
$WikiTheme->maybeSplitWikiWord($pagename));
$pageheader->addTooltip(sprintf(_("BackLinks for %s"), $pagename));
if ($request->getArg('frame'))
$pageheader->setAttr('target', '_top');
}
$pagetitle = SplitPagename($pagename);
if (($redirect_from = $request->getArg('redirectfrom'))) {
$redirect_message = HTML::span(array('class' => 'redirectfrom'),
fmt("(Redirected from %s)",
RedirectorLink($redirect_from)));
// abuse the $redirected template var for some status update notice
} elseif ($request->getArg('errormsg')) {
$redirect_message = $request->getArg('errormsg');
$request->setArg('errormsg', false);
}
$request->appendValidators(array('pagerev' => $revision->getVersion(),
'%mtime' => $revision->get('mtime')));
/*
// FIXME: This is also in the template...
if ($request->getArg('action') != 'pdf' and !headers_sent()) {
// FIXME: enable MathML/SVG/... support
if (ENABLE_XHTML_XML
and (!isBrowserIE()
and strstr($request->get('HTTP_ACCEPT'),'application/xhtml+xml')))
header("Content-Type: application/xhtml+xml; charset=" . $GLOBALS['charset']);
else
header("Content-Type: text/html; charset=" . $GLOBALS['charset']);
}
*/
$toks['TITLE'] = $pagetitle; // <title> tag
$toks['HEADER'] = $pageheader; // h1 with backlink
$toks['revision'] = $revision;
// On external searchengine (google) referrer, highlight the searchterm and
// pass through the Searchhighlight actionpage.
if ($result = isExternalReferrer($request)) {
if (!empty($result['query'])) {
if (ENABLE_SEARCHHIGHLIGHT) {
$request->_searchhighlight = $result;
$request->appendValidators(array('%mtime' => time())); // force no cache(?)
// Should be changed to check the engine and search term only
// $request->setArg('nocache', 1);
$page_content = new TransformedText($revision->getPage(),
$revision->getPackedContent(),
$revision->getMetaData());
/* Now add the SearchHighlight plugin to the top of the page, in memory only.
You can parametrize this by changing the SearchHighlight action page.
*/
if ($actionpage = $request->findActionPage('SearchHighlight')) {
$actionpage = $request->getPage($actionpage);
$actionrev = $actionpage->getCurrentRevision();
$pagetitle = HTML(fmt("%s: %s",
$actionpage->getName(),
$WikiTheme->linkExistingWikiWord($pagename, false, $version)));
$request->appendValidators(array('actionpagerev' => $actionrev->getVersion(),
'%mtime' => $actionrev->get('mtime')));
$toks['SEARCH_ENGINE'] = $result['engine'];
$toks['SEARCH_ENGINE_URL'] = $result['engine_url'];
$toks['SEARCH_TERM'] = $result['query'];
//$toks['HEADER'] = HTML($actionpage->getName(),": ",$pageheader); // h1 with backlink
$actioncontent = new TransformedText($actionrev->getPage(),
$actionrev->getPackedContent(),
$actionrev->getMetaData());
// prepend the actionpage in front of the hightlighted content
$toks['CONTENT'] = HTML($actioncontent, $page_content);
}
}
} else {
$page_content = $revision->getTransformedContent();
}
} else {
$page_content = $revision->getTransformedContent();
}
/* Check for special pagenames, which are no actionpages. */
/*
if ( $pagename == _("RecentVisitors")) {
$toks['ROBOTS_META']="noindex,follow";
} else
*/
if ($pagename == _("SandBox")) {
$toks['ROBOTS_META']="noindex,nofollow";
} else if (!isset($toks['ROBOTS_META'])) {
$toks['ROBOTS_META'] = "index,follow";
}
if (!isset($toks['CONTENT']))
$toks['CONTENT'] = new Template('browse', $request, $page_content);
if (!empty($redirect_message))
$toks['redirected'] = $redirect_message;
$toks['PAGE_DESCRIPTION'] = $page_content->getDescription();
$toks['PAGE_KEYWORDS'] = GleanKeywords($page);
if (!$template)
$template = new Template('html', $request);
// Handle other formats: So far we had html only.
// xml is requested by loaddump, rss is handled by RecentChanges,
// pdf is a special action, but should be a format to dump multiple pages
// if the actionpage plugin returns a pagelist.
// rdf, owl, kbmodel, daml, ... are handled by SemanticWeb.
$format = $request->getArg('format');
/* Only single page versions. rss only if not already handled by RecentChanges.
*/
if (!$format or $format == 'html' or $format == 'sidebar' or $format == 'contribs') {
$template->printExpansion($toks);
} elseif ($format == 'xml') {
$template = new Template('htmldump', $request);
$template->printExpansion($toks);
} else {
// No pagelist here. Single page version only
require_once("lib/PageList.php");
$pagelist = new PageList();
$pagelist->addPage($page);
if ($format == 'pdf') {
require_once("lib/pdf.php");
ConvertAndDisplayPdfPageList($request, $pagelist);
// time-sorted rdf a la RecentChanges
} elseif (in_array($format, array("rss91","rss2","rss","atom"))) {
if ($pagename == _("RecentChanges"))
$template->printExpansion($toks);
else {
require_once("lib/plugin/RecentChanges.php");
$plugin = new WikiPlugin_RecentChanges();
$args = $request->getArgs();
return $plugin->format($plugin->getChanges($request->_dbi, $args), $args);
}
} elseif ($format == 'rdf') { // all semantic relations and attributes
require_once("lib/SemanticWeb.php");
$rdf = new RdfWriter($request, $pagelist);
$rdf->format();
} elseif ($format == 'owl') { // or daml?
require_once("lib/SemanticWeb.php");
$rdf = new OwlWriter($request, $pagelist);
$rdf->format();
} else {
if (!in_array($pagename, array(_("LinkDatabase"))))
trigger_error(sprintf("Unhandled format %s. Reverting to html", $format),
E_USER_WARNING);
$template->printExpansion($toks);
}
}
$page->increaseHitCount();
if ($request->getArg('action') != 'pdf')
$request->checkValidators();
flush();
return '';
}
// $Log: display.php,v $
// Revision 1.75 2007/07/01 09:17:45 rurban
// add ATOM support, a very questionable format
//
// Revision 1.74 2007/06/07 17:01:27 rurban
// actionPage has no toks: fix format=rss* on actionpages
//
// Revision 1.73 2007/05/30 20:43:31 rurban
// added MonoBook UserContribs
//
// Revision 1.72 2007/05/13 18:13:12 rurban
// LinkDatabase format exceptions
//
// Revision 1.71 2007/02/17 22:39:05 rurban
// format=rss overhaul
//
// Revision 1.70 2007/01/22 23:43:06 rurban
// Add RecentChanges format=sidebar
//
// Revision 1.69 2007/01/20 15:53:51 rurban
// Rewrite of SearchHighlight: through ActionPage and InlineParser
//
// Revision 1.68 2007/01/20 11:25:19 rurban
// actionPage: request is already global
//
// Revision 1.67 2007/01/07 18:44:20 rurban
// Support format handlers for single- and multi-page: pagelists from actionpage plugins. Use USE_SEARCHHIGHLIGHT. Fix InlineHighlight (still experimental).
//
// Revision 1.66 2006/03/19 14:26:29 rurban
// sf.net patch by Matt Brown: Add rel=nofollow to more actions
//
// Revision 1.65 2005/05/05 08:54:40 rurban
// fix pagename split for title and header
//
// Revision 1.64 2005/04/23 11:21:55 rurban
// honor theme-specific SplitWikiWord in the HEADER
//
// Revision 1.63 2004/11/30 17:48:38 rurban
// just comments
//
// Revision 1.62 2004/11/30 09:51:35 rurban
// changed KEYWORDS from pageprefix to search term. added installer detection.
//
// Revision 1.61 2004/11/21 11:59:19 rurban
// remove final \n to be ob_cache independent
//
// Revision 1.60 2004/11/19 19:22:03 rurban
// ModeratePage part1: change status
//
// Revision 1.59 2004/11/17 20:03:58 rurban
// Typo: call SearchHighlight not SearchHighLight
//
// Revision 1.58 2004/11/09 17:11:16 rurban
// * revert to the wikidb ref passing. there's no memory abuse there.
// * use new wikidb->_cache->_id_cache[] instead of wikidb->_iwpcache, to effectively
// store page ids with getPageLinks (GleanDescription) of all existing pages, which
// are also needed at the rendering for linkExistingWikiWord().
// pass options to pageiterator.
// use this cache also for _get_pageid()
// This saves about 8 SELECT count per page (num all pagelinks).
// * fix passing of all page fields to the pageiterator.
// * fix overlarge session data which got broken with the latest ACCESS_LOG_SQL changes
//
// Revision 1.57 2004/11/01 10:43:57 rurban
// seperate PassUser methods into seperate dir (memory usage)
// fix WikiUser (old) overlarge data session
// remove wikidb arg from various page class methods, use global ->_dbi instead
// ...
//
// Revision 1.56 2004/10/14 13:44:14 rurban
// fix lib/display.php:159: Warning[2]: Argument to array_reverse() should be an array
//
// Revision 1.55 2004/09/26 14:58:35 rurban
// naive SearchHighLight implementation
//
// Revision 1.54 2004/09/17 14:19:41 rurban
// disable Content-Type header for now, until it is fixed
//
// Revision 1.53 2004/06/25 14:29:20 rurban
// WikiGroup refactoring:
// global group attached to user, code for not_current user.
// improved helpers for special groups (avoid double invocations)
// new experimental config option ENABLE_XHTML_XML (fails with IE, and document.write())
// fixed a XHTML validation error on userprefs.tmpl
//
// Revision 1.52 2004/06/14 11:31:37 rurban
// renamed global $Theme to $WikiTheme (gforge nameclash)
// inherit PageList default options from PageList
// default sortby=pagename
// use options in PageList_Selectable (limit, sortby, ...)
// added action revert, with button at action=diff
// added option regex to WikiAdminSearchReplace
//
// Revision 1.51 2004/05/18 16:23:39 rurban
// rename split_pagename to SplitPagename
//
// Revision 1.50 2004/05/04 22:34:25 rurban
// more pdf support
//
// Revision 1.49 2004/04/18 01:11:52 rurban
// more numeric pagename fixes.
// fixed action=upload with merge conflict warnings.
// charset changed from constant to global (dynamic utf-8 switching)
//
// For emacs users
// Local Variables:
// mode: php
// tab-width: 8
// c-basic-offset: 4
// c-hanging-comment-ender-p: nil
// indent-tabs-mode: nil
// End:
?>
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