From fbdfda2a2fe05ce5c1fc13fbbccf4cfe724d5c1b Mon Sep 17 00:00:00 2001
From: Julian Ostrow <jostrow@users.mediawiki.org>
Date: Sun, 18 Jul 2004 03:23:11 +0000
Subject: [PATCH] Alters Skin::makeLinkObj() to bypass using linkcache Adds
 function OutputPage::parseLinkHolders(), which works in conjunction with the
 modified Skin::makeLinkObj()

---
 includes/OutputPage.php | 88 +++++++++++++++++++++++++++++++++++++++++
 includes/Skin.php       | 41 +++++++------------
 2 files changed, 102 insertions(+), 27 deletions(-)

diff --git a/includes/OutputPage.php b/includes/OutputPage.php
index 5e17bbf664..fb662679f9 100644
--- a/includes/OutputPage.php
+++ b/includes/OutputPage.php
@@ -345,6 +345,8 @@ class OutputPage {
 
 
 		$this->sendCacheControl();
+		
+		$this->mBodytext = $this->parseLinkHolders();
 
 		header( "Content-type: $wgMimeType; charset={$wgOutputEncoding}" );
 		header( "Content-language: {$wgLanguageCode}" );
@@ -754,5 +756,91 @@ class OutputPage {
 		# $ret .= "<!--[if gte IE 5.5000]><script type='text/javascript' src='$fix'></script><![endif]-->";
 		return $ret;
 	}
+	
+	# Parse <tmp=> link placeholders to avoid using linkcache
+	# $wgInternalLinks populated in Skin::makeLinkObj()
+	function parseLinkHolders()
+	{
+		global $wgUser, $wgInternalLinks;
+		
+		$fname = 'OutputPage::parseLinkHolders';
+		wfProfileIn( $fname );
+		
+		# Get placeholders from body
+		preg_match_all( "/<tmp=(.*?)>/", $this->mBodytext, $tmpLinks );
+		
+		if ( !empty( $tmpLinks[0] ) ) {
+			$dbr =& wfGetDB( DB_READ );
+			$sk = $wgUser->getSkin();
+			
+			# Index the DB key along with other information
+			foreach ( $tmpLinks[1] as $key => $val ) {
+				$wgInternalLinks['dbkey'][$key] = $wgInternalLinks['obj'][$key]->getDBkey();
+			}
+			
+			# Sort according to namespace
+			asort($wgInternalLinks['ns']);
+			
+			# Generate query
+			foreach ( $wgInternalLinks['ns'] as $key => $val ) {
+				if ( !isset( $current ) ) {
+					$current = $val;
+					$query =  "SELECT cur_title, LENGTH(cur_text) AS cur_len, cur_is_redirect FROM cur ";
+					$query .= "WHERE (cur_namespace=$val AND cur_title IN(";
+				} elseif ( $current != $val ) {
+					$current = $val;
+					$query .= ")) OR (cur_namespace=$val AND cur_title IN(";
+				} else {
+					$query .= ", ";
+				}
+				
+				$query .= $dbr->addQuotes( $wgInternalLinks['dbkey'][$key] );
+			}
+
+			$query .= "))";
+			
+			$res = $dbr->query( $query );
+			
+			# Fetch data and pass to appropriate make*LinkObj()
+			# Index search and replace strings to substitute placeholders for actual links
+			while ( $s = $dbr->fetchRow($res) ) {
+				$i = array_search($s['cur_title'], $wgInternalLinks['dbkey']);
+				$threshold = $wgUser->getOption('stubthreshold');
+				if ( $threshold > 0 ) {
+					$size = $s['cur_len'];
+					if ( $s['cur_is_redirect'] || ( $wgInternalLinks['ns'][$i] != 0 ) ) {
+						$size = $threshold * 2; # Really big
+					}
+				} else {
+					$size = 1;
+				}
+				
+				if ( $size < $threshold ) {
+					$wgInternalLinks['replace'][$i] = $sk->makeStubLinkObj( $wgInternalLinks['obj'][$i],
+						$wgInternalLinks['text'][$i], $wgInternalLinks['query'][$i], '',
+						$wgInternalLinks['prefix'][$i]);
+				} else {
+					$wgInternalLinks['replace'][$i] = $sk->makeKnownLinkObj( $wgInternalLinks['obj'][$i],
+						$wgInternalLinks['text'][$i], $wgInternalLinks['query'][$i], '',
+						$wgInternalLinks['prefix'][$i]);
+				}
+			}
+			
+			# Finish populating search and replace arrays for broken links
+			foreach ( $wgInternalLinks['ns'] as $key => $val ) {
+				$search[]  = $tmpLinks[0][$key];
+				$replace[] = ( empty ( $wgInternalLinks['replace'][$key] ) ) ?
+					$sk->makeBrokenLinkObj( $wgInternalLinks['obj'][$key],
+						$wgInternalLinks['text'][$key], $wgInternalLinks['query'][$key], '',
+						$wgInternalLinks['prefix'][$key])
+					: $wgInternalLinks['replace'][$key];
+			}
+			
+			$out = str_replace( $search, $replace, $this->mBodytext );
+		}
+		
+		wfProfileOut( $fname );
+		return ( $out );
+	}
 }
 ?>
diff --git a/includes/Skin.php b/includes/Skin.php
index 5c16a87fb1..bf4efbbe0c 100644
--- a/includes/Skin.php
+++ b/includes/Skin.php
@@ -1440,6 +1440,7 @@ class Skin {
 	function makeLinkObj( &$nt, $text= '', $query = '', $trail = '', $prefix = '' )
 	{
 		global $wgOut, $wgUser;
+		global $wgInternalLinks;
 		$fname = 'Skin::makeLinkObj';
 
 		if ( $nt->isExternal() ) {
@@ -1462,35 +1463,21 @@ class Skin {
 				( Namespace::getImage() == $nt->getNamespace() ) ) {
 			$retVal = $this->makeKnownLinkObj( $nt, $text, $query, $trail, $prefix );
 		} else {
-			$aid = $nt->getArticleID() ;
-			if ( 0 == $aid ) {
-				$retVal = $this->makeBrokenLinkObj( $nt, $text, $query, $trail, $prefix );
-			} else {
-				$threshold = $wgUser->getOption('stubthreshold') ;
-				if ( $threshold > 0 ) {
-					$s = $dbr->getArray( 'cur',
-						array( 'LENGTH(cur_text) AS x', 'cur_namespace', 'cur_is_redirect' ),
-						array( 'cur_id' => $aid ),
-						$fname
-					);
-
-					if ( $s !== false ) {
-						$size = $s->x;
-						if ( $s->cur_is_redirect OR $s->cur_namespace != 0 ) {
-							$size = $threshold*2 ; # Really big
-						}
-					} else {
-						$size = $threshold*2 ; # Really big
-					}
-				} else {
-					$size = 1 ;
-				}
-				if ( $size < $threshold ) {
-					$retVal = $this->makeStubLinkObj( $nt, $text, $query, $trail, $prefix );
-				} else {
-					$retVal = $this->makeKnownLinkObj( $nt, $text, $query, $trail, $prefix );
+			$inside = '';
+			if ( '' != $trail ) {
+				if ( preg_match( $this->linktrail, $trail, $m ) ) {
+					$inside = $m[1];
+					$trail = $m[2];
 				}
 			}
+			
+			# Allows wiki to bypass using linkcache, see OutputPage::parseLinkHolders()
+			$wgInternalLinks['obj'][] = $nt;
+			$wgInternalLinks['text'][] = $text . $inside;
+			$wgInternalLinks['query'][] = $query;
+			$wgInternalLinks['prefix'][] = $prefix;
+			$wgInternalLinks['ns'][] = $nt->getNamespace();
+			$retVal = "<tmp=" . $nt->getDBkey() . ">{$trail}";
 		}
 		return $retVal;
 	}
-- 
2.20.1