Update to MediaWiki 1.18.0

* also update ArchLinux skin to chagnes in MonoBook
* Use only css to hide our menu bar when printing

1 files changed, 892 insertions, 0 deletions

diff --git a/maintenance/importUseModWikipedia.php b/maintenance/importUseModWikipedia.php
new file mode 100644
index 00000000..c4b8112f
--- /dev/null
+++ b/maintenance/importUseModWikipedia.php
@@ -0,0 +1,892 @@
+<?php
+
+/**
+ * A script to read a dump of the English Wikipedia from the UseModWiki period, and to
+ * generate an XML dump in MediaWiki format.
+ *
+ * Some relevant code was ported from UseModWiki 0.92.
+ *
+ */
+
+require_once( dirname( __FILE__ ) . '/Maintenance.php' );
+require_once( dirname( __FILE__ ) .'/../includes/normal/UtfNormalUtil.php' );
+
+
+class ImportUseModWikipedia extends Maintenance {
+	var $encodeMap, $decodeMap;
+
+	var $deepRenames = array(
+		'JimboWales' => 983862286,
+		'TexaS' => 983918410,
+		'HistoryOfUnitedStatesTalk' => 984795423,
+		'MetallicA' => 985128533,
+		'PythagoreanTheorem' => 985225545,
+		'TheCanonofScripture' => 985368223,
+		'TaoTehChing' => 985368222,
+		//'TheMostRemarkableFormulaInTheWorld' => 985368221,
+		'TheRecorder' => 985368220,
+		'GladstoneOregon' => 985368219,
+		'PacificBeach' => '?',
+		'AaRiver' => '?',
+	);
+
+	var $replacements = array();
+
+	var $renameTextLinksOps = array(
+		983846265 => array(
+			'TestIgnore' => 'IgnoreTest',
+		),
+		983848080 => array(
+			'UnitedLocomotiveWorks' => 'Atlas Shrugged/United Locomotive Works'
+		),
+		983856376 => array(
+			'WikiPedia' => 'Wikipedia',
+		),
+		983896152 => array(
+			'John_F_Kennedy' => 'John_F._Kennedy',
+		),
+		983905871 => array(
+			'LarrySanger' => 'Larry_Sanger'
+		),
+		984697068 => array(
+			'UnitedStates' => 'United States',
+		),
+		984792748 => array(
+			'LibertarianisM' => 'Libertarianism'
+		),
+		985327832 => array(
+			'AnarchisM' => 'Anarchism',
+		),
+		985290063 => array(
+			'HistoryOfUnitedStatesDiscussion' => 'History_Of_United_States_Discussion'
+		),
+		985290091 => array(
+			'BritishEmpire' => 'British Empire'
+		),
+		/*
+		985468958 => array(
+			'ScienceFiction' => 'Science fiction',
+		),*/
+	);
+
+	/**
+	 * Hack for observed substitution issues
+	 */
+	var $skipSelfSubstitution = array(
+		'Pythagorean_Theorem',
+		'The_Most_Remarkable_Formula_In_The_World',
+		'Wine',
+	);
+
+	var $unixLineEndingsOps = array(
+		987743732 => 'Wikipedia_FAQ'
+	);
+
+	var $replacementsDone = array();
+
+	var $moveLog = array();
+	var $moveDests = array();
+	var $revId;
+
+	var $rc = array();
+	var $textCache = array();
+	var $blacklist = array();
+
+	var $FS, $FS1, $FS2, $FS3;
+	var $FreeLinkPattern, $UrlPattern, $LinkPattern, $InterLinkPattern;
+
+	var $cp1252Table = array(
+0x80 => 0x20ac,
+0x81 => 0x0081,
+0x82 => 0x201a,
+0x83 => 0x0192,
+0x84 => 0x201e,
+0x85 => 0x2026,
+0x86 => 0x2020,
+0x87 => 0x2021,
+0x88 => 0x02c6,
+0x89 => 0x2030,
+0x8a => 0x0160,
+0x8b => 0x2039,
+0x8c => 0x0152,
+0x8d => 0x008d,
+0x8e => 0x017d,
+0x8f => 0x008f,
+0x90 => 0x0090,
+0x91 => 0x2018,
+0x92 => 0x2019,
+0x93 => 0x201c,
+0x94 => 0x201d,
+0x95 => 0x2022,
+0x96 => 0x2013,
+0x97 => 0x2014,
+0x98 => 0x02dc,
+0x99 => 0x2122,
+0x9a => 0x0161,
+0x9b => 0x203a,
+0x9c => 0x0153,
+0x9d => 0x009d,
+0x9e => 0x017e,
+0x9f => 0x0178);
+
+	public function __construct() {
+		parent::__construct();
+		$this->addOption( 'datadir', 'the value of $DataDir from wiki.cgi', true, true );
+		$this->addOption( 'outfile', 'the name of the output XML file', true, true );
+		$this->initLinkPatterns();
+
+		$this->encodeMap = $this->decodeMap = array();
+		
+		for ($source = 0; $source <= 0xff; $source++) {
+			if ( isset( $this->cp1252Table[$source] ) ) {
+				$dest = $this->cp1252Table[$source];
+			} else {
+				$dest = $source;
+			}
+			$sourceChar = chr( $source );
+			$destChar = codepointToUtf8( $dest );
+			$this->encodeMap[$sourceChar] = $destChar;
+			$this->decodeMap[$destChar] = $sourceChar;
+		}
+	}
+
+	function initLinkPatterns() {
+		# Field separators are used in the URL-style patterns below.
+		$this->FS  = "\xb3";      # The FS character is a superscript "3"
+		$this->FS1 = $this->FS . "1";   # The FS values are used to separate fields
+		$this->FS2 = $this->FS . "2";   # in stored hashtables and other data structures.
+		$this->FS3 = $this->FS . "3";   # The FS character is not allowed in user data.
+
+		$UpperLetter = "[A-Z";
+		$LowerLetter = "[a-z";
+		$AnyLetter   = "[A-Za-z";
+		$AnyLetter .= "_0-9";
+		$UpperLetter .= "]"; $LowerLetter .= "]"; $AnyLetter .= "]";
+
+		# Main link pattern: lowercase between uppercase, then anything
+		$LpA = $UpperLetter . "+" . $LowerLetter . "+" . $UpperLetter
+			. $AnyLetter . "*";
+		# Optional subpage link pattern: uppercase, lowercase, then anything
+		$LpB = $UpperLetter . "+" . $LowerLetter . "+" . $AnyLetter . "*";
+
+		# Loose pattern: If subpage is used, subpage may be simple name
+		$this->LinkPattern = "((?:(?:$LpA)?\\/$LpB)|$LpA)";
+		$QDelim = '(?:"")?';     # Optional quote delimiter (not in output)
+		$this->LinkPattern .= $QDelim;
+
+		# Inter-site convention: sites must start with uppercase letter
+		# (Uppercase letter avoids confusion with URLs)
+		$InterSitePattern = $UpperLetter . $AnyLetter . "+";
+		$this->InterLinkPattern = "((?:$InterSitePattern:[^\\]\\s\"<>{$this->FS}]+)$QDelim)";
+
+		$AnyLetter = "[-,. _0-9A-Za-z]";
+		$this->FreeLinkPattern = "($AnyLetter+)";
+		$this->FreeLinkPattern = "((?:(?:$AnyLetter+)?\\/)?$AnyLetter+)";
+		$this->FreeLinkPattern .= $QDelim;
+
+		# Url-style links are delimited by one of:
+		#   1.  Whitespace                           (kept in output)
+		#   2.  Left or right angle-bracket (< or >) (kept in output)
+		#   3.  Right square-bracket (])             (kept in output)
+		#   4.  A single double-quote (")            (kept in output)
+		#   5.  A $FS (field separator) character    (kept in output)
+		#   6.  A double double-quote ("")           (removed from output)
+
+		$UrlProtocols = "http|https|ftp|afs|news|nntp|mid|cid|mailto|wais|"
+			. "prospero|telnet|gopher";
+		$UrlProtocols .= '|file';
+		$this->UrlPattern = "((?:(?:$UrlProtocols):[^\\]\\s\"<>{$this->FS}]+)$QDelim)";
+		$ImageExtensions = "(gif|jpg|png|bmp|jpeg)";
+		$RFCPattern = "RFC\\s?(\\d+)";
+		$ISBNPattern = "ISBN:?([0-9- xX]{10,})";
+	}
+
+	function execute() {
+		$this->articleFileName = '/tmp/importUseMod.' . mt_rand( 0, 0x7ffffff ) . '.tmp';
+		$this->patchFileName = '/tmp/importUseMod.' . mt_rand( 0, 0x7ffffff ) . '.tmp';
+		$this->dataDir = $this->getOption( 'datadir' );
+		$this->outFile = fopen( $this->getOption( 'outfile' ), 'w' );
+		if ( !$this->outFile ) {
+			echo "Unable to open output file\n";
+			return 1;
+		}
+		$this->writeXmlHeader();
+		$this->readRclog();
+		$this->writeMoveLog();
+		$this->writeRevisions();
+		$this->reconcileCurrentRevs();
+		$this->writeXmlFooter();
+		unlink( $this->articleFileName );
+		unlink( $this->patchFileName );
+		return 0;
+	}
+
+	function writeXmlHeader() {
+		fwrite( $this->outFile, <<<EOT
+<mediawiki xmlns="http://www.mediawiki.org/xml/export-0.3/" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://www.mediawiki.org/xml/export-0.3/ http://www.mediawiki.org/xml/export-0.3.xsd" version="0.3" xml:lang="en">
+  <siteinfo>
+    <sitename>Wikipedia</sitename>
+    <base>http://www.wikipedia.com/</base>
+    <generator>MediaWiki 1.18alpha importUseModWikipedia.php</generator>
+    <case>case-sensitive</case>
+    <namespaces>
+      <namespace key="0" />
+    </namespaces>
+  </siteinfo>
+
+EOT
+		);
+	}
+
+	function writeXmlFooter() {
+		fwrite( $this->outFile, "</mediawiki>\n" );
+	}
+
+	function readRclog() {
+		$rcFile = fopen( "{$this->dataDir}/rclog", 'r' );
+		while ( $line = fgets( $rcFile ) ) {
+			$bits = explode( $this->FS3, $line );
+			if ( count( $bits ) !== 7 ) {
+				echo "Error reading rclog\n";
+				return;
+			}
+			$params = array(
+				'timestamp' => $bits[0],
+				'rctitle' => $bits[1],
+				'summary' => $bits[2],
+				'minor' => $bits[3],
+				'host' => $bits[4],
+				'kind' => $bits[5],
+				'extra' => array()
+			);
+			$extraList = explode( $this->FS2, $bits[6] );
+
+			for ( $i = 0; $i < count( $extraList ); $i += 2 ) {
+				$params['extra'][$extraList[$i]] = $extraList[$i + 1];
+			}
+			$this->rc[$params['timestamp']][] = $params;
+		}
+	}
+
+	function writeMoveLog() {
+		$this->moveLog = array();
+		$deepRenames = $this->deepRenames;
+		echo "Calculating move log...\n";
+		$this->processDiffFile( array( $this, 'moveLogCallback' ) );
+
+		// We have the timestamp intervals, now make a guess at the actual timestamp
+		foreach ( $this->moveLog as $newTitle => $params ) {
+			// Is there a time specified?
+			$drTime = false;
+			if ( isset( $deepRenames[$params['old']] ) ) {
+				$drTime = $deepRenames[$params['old']];
+				if ( $drTime !== '?' ) {
+					if ( ( !isset( $params['endTime'] ) || $drTime < $params['endTime'] )
+						&& $drTime > $params['startTime'] ) 
+					{
+						$this->moveLog[$newTitle]['timestamp'] = $drTime;
+						$this->moveLog[$newTitle]['deep'] = true;
+
+						echo "{$params['old']} -> $newTitle at $drTime\n";
+						unset( $deepRenames[$params['old']] );
+						continue;
+					} else {
+						echo "WARNING: deep rename time invalid: {$params['old']}\n";
+						unset( $deepRenames[$params['old']] );
+					}
+				}
+			}
+
+			// Guess that it is one second after the last edit to the page before it was moved
+			$this->moveLog[$newTitle]['timestamp'] = $params['startTime'] + 1;
+			if ( $drTime === '?' ) {
+				$this->moveLog[$newTitle]['deep'] = true;
+				unset( $deepRenames[$params['old']] );
+			}
+			if ( isset( $params['endTime'] ) ) {
+				$this->printLatin1( "{$params['old']} -> $newTitle between " . 
+					"{$params['startTime']} and {$params['endTime']}\n" );
+			} else {
+				$this->printLatin1( "{$params['old']} -> $newTitle after " . 
+					"{$params['startTime']}\n" );
+			}
+		}
+
+		// Write the move log to the XML file
+		$id = 1;
+		foreach ( $this->moveLog as $newTitle => $params ) {
+			$out = "<logitem>\n" . 
+				$this->element( 'id', $id++ ) .
+				$this->element( 'timestamp', wfTimestamp( TS_ISO_8601, $params['timestamp'] ) ) .
+				"<contributor>\n" .
+				$this->element( 'username', 'UseModWiki admin' ) .
+				"</contributor>" .
+				$this->element( 'type', 'move' ) .
+				$this->element( 'action', 'move' ) .
+				$this->element( 'logtitle', $params['old'] ) .
+				"<params xml:space=\"preserve\">" .
+				htmlspecialchars( $this->encode( "{$newTitle}\n1" ) ) .
+				"</params>\n" .
+				"</logitem>\n";
+			fwrite( $this->outFile, $out );
+		}
+
+		// Check for remaining deep rename entries
+		if ( $deepRenames ) {
+			echo "WARNING: the following entries in \$this->deepRenames are " .
+				"invalid, since no such move exists:\n" .
+				implode( "\n", array_keys( $deepRenames ) ) .
+				"\n\n";
+		}
+
+	}
+
+	function element( $name, $value ) {
+		return "<$name>" . htmlspecialchars( $this->encode( $value ) ) . "</$name>\n";
+	}
+
+	function moveLogCallback( $entry ) {
+		$rctitle = $entry['rctitle'];
+		$title = $entry['title'];
+		$this->moveDests[$rctitle] = $title;
+
+		if ( $rctitle === $title ) {
+			if ( isset( $this->moveLog[$rctitle] )
+				&& !isset( $this->moveLog[$rctitle]['endTime'] ) )
+			{
+				// This is the latest time that the page could have been moved
+				$this->moveLog[$rctitle]['endTime'] = $entry['timestamp'];
+			}
+		} else {
+			if ( !isset( $this->moveLog[$rctitle] ) ) {
+				// Initialise the move log entry
+				$this->moveLog[$rctitle] = array(
+					'old' => $title
+				);
+			}
+			// Update the earliest time the page could have been moved
+			$this->moveLog[$rctitle]['startTime'] = $entry['timestamp'];
+		}
+	}
+
+	function writeRevisions() {
+		$this->numGoodRevs = 0;
+		$this->revId = 1;
+		$this->processDiffFile( array( $this, 'revisionCallback' ) );
+		echo "\n\nImported {$this->numGoodRevs} out of {$this->numRevs}\n";
+	}
+
+	function revisionCallback( $params ) {
+		$title = $params['rctitle'];
+		$editTime = $params['timestamp'];
+
+		if ( isset( $this->blacklist[$title] ) ) {
+			return;
+		}
+		$this->doPendingOps( $editTime );
+
+		$origText = $this->getText( $title );
+		$text = $this->patch( $origText, $params['diff'] );
+		if ( $text === false ) {
+			echo "$editTime $title attempting resolution...\n";
+			$linkSubstitutes = $this->resolveFailedDiff( $origText, $params['diff'] );
+			if ( !$linkSubstitutes ) {
+				$this->printLatin1( "$editTime $title DIFF FAILED\n" );
+				$this->blacklist[$title] = true;
+				return;
+			}
+			$this->printLatin1( "$editTime $title requires substitutions:\n" );
+			$time = $editTime - 1;
+			foreach ( $linkSubstitutes as $old => $new ) {
+				$this->printLatin1( "SUBSTITUTE $old -> $new\n" );
+				$this->renameTextLinks( $old, $new, $time-- );
+			}
+			$origText = $this->getText( $title );
+			$text = $this->patch( $origText, $params['diff'] );
+			if ( $text === false ) {
+				$this->printLatin1( "$editTime $title STILL FAILS!\n" );
+				$this->blacklist[$title] = true;
+				return;
+			}
+
+			echo "\n";
+		}
+
+		$params['text'] = $text;
+		$this->saveRevision( $params );
+		$this->numGoodRevs++;
+		#$this->printLatin1( "$editTime $title\n" );
+	}
+
+	function doPendingOps( $editTime ) {
+		foreach ( $this->moveLog as $newTitle => $entry ) {
+			if ( $entry['timestamp'] <= $editTime ) {
+				unset( $this->moveLog[$newTitle] );
+				if ( isset( $entry['deep'] ) ) {
+					$this->renameTextLinks( $entry['old'], $newTitle, $entry['timestamp'] );
+				}
+			}
+		}
+
+		foreach ( $this->renameTextLinksOps as $renameTime => $replacements ) {
+			if ( $editTime >= $renameTime ) {
+				foreach ( $replacements as $old => $new ) {
+					$this->printLatin1( "SUBSTITUTE $old -> $new\n" );
+					$this->renameTextLinks( $old, $new, $renameTime );
+				}
+				unset( $this->renameTextLinksOps[$renameTime] );
+			}
+		}
+
+		foreach ( $this->unixLineEndingsOps as $fixTime => $title ) {
+			if ( $editTime >= $fixTime ) {
+				$this->printLatin1( "$fixTime $title FIXING LINE ENDINGS\n" );
+				$text = $this->getText( $title );
+				$text = str_replace( "\r", '', $text );
+				$this->saveRevision( array(
+					'rctitle' => $title,
+					'timestamp' => $fixTime,
+					'extra' => array( 'name' => 'UseModWiki admin' ),
+					'text' => $text,
+					'summary' => 'Fixing line endings',
+				) );
+				unset( $this->unixLineEndingsOps[$fixTime] );
+			}
+		}
+	}
+
+	function patch( $source, $diff ) {
+		file_put_contents( $this->articleFileName, $source );
+		file_put_contents( $this->patchFileName, $diff );
+		$error = wfShellExec( 
+			wfEscapeShellArg(
+				'patch',
+				'-n',
+				'-r', '-',
+				'--no-backup-if-mismatch',
+				'--binary',
+				$this->articleFileName,
+				$this->patchFileName
+			) . ' 2>&1',
+			$status
+		);
+		$text = file_get_contents( $this->articleFileName );
+		if ( $status || $text === false ) {
+			return false;
+		} else {
+			return $text;
+		}
+	}
+
+	function resolveFailedDiff( $origText, $diff ) {
+		$context = array();
+		$diffLines = explode( "\n", $diff );
+		for ( $i = 0; $i < count( $diffLines ); $i++ ) {
+			$diffLine = $diffLines[$i];
+			if ( !preg_match( '/^(\d+)(?:,\d+)?[acd]\d+(?:,\d+)?$/', $diffLine, $m ) ) {
+				continue;
+			}
+
+			$sourceIndex = intval( $m[1] );
+			$i++;
+			while ( $i < count( $diffLines ) && substr( $diffLines[$i], 0, 1 ) === '<' ) {
+				$context[$sourceIndex - 1] = substr( $diffLines[$i], 2 );
+				$sourceIndex++;
+				$i++;
+			}
+			$i--;
+		}
+
+		$changedLinks = array();
+		$origLines = explode( "\n", $origText );
+		foreach ( $context as $i => $contextLine ) {
+			$origLine = isset( $origLines[$i] ) ? $origLines[$i] : '';
+			if ( $contextLine === $origLine ) {
+				continue;
+			}
+			$newChanges = $this->resolveTextChange( $origLine, $contextLine );
+			if ( is_array( $newChanges ) ) {
+				$changedLinks += $newChanges;
+			} else {
+				echo "Resolution failure on line " . ( $i + 1 ) . "\n";
+				$this->printLatin1( $newChanges );
+			}
+		}
+
+		return $changedLinks;
+	}
+
+	function resolveTextChange( $source, $dest ) {
+		$changedLinks = array();
+		$sourceLinks = $this->getLinkList( $source );
+		$destLinks = $this->getLinkList( $dest );
+		$newLinks = array_diff( $destLinks, $sourceLinks );
+		$removedLinks = array_diff( $sourceLinks, $destLinks );
+
+		// Match up the removed links with the new links
+		foreach ( $newLinks as $newLink ) {
+			$minDistance = 100000000;
+			$bestRemovedLink = false;
+			foreach ( $removedLinks as $removedLink ) {
+				$editDistance = levenshtein( $newLink, $removedLink );
+				if ( $editDistance < $minDistance ) {
+					$minDistance = $editDistance;
+					$bestRemovedLink = $removedLink;
+				}
+			}
+			if ( $bestRemovedLink !== false ) {
+				$changedLinks[$bestRemovedLink] = $newLink;
+				$newLinks = array_diff( $newLinks, array( $newLink ) );
+				$removedLinks = array_diff( $removedLinks, array( $bestRemovedLink ) );
+			}
+		}
+
+		$proposal = $source;
+		foreach ( $changedLinks as $removedLink => $newLink ) {
+			$proposal = $this->substituteTextLinks( $removedLink, $newLink, $proposal );
+		}
+		if ( $proposal !== $dest ) {
+			// Resolution failed
+			$msg = "Source line: $source\n" .
+				"Source links: " . implode( ', ', $sourceLinks ) . "\n" .
+				"Context line: $dest\n" .
+				"Context links: " . implode( ', ', $destLinks ) . "\n" .
+				"Proposal: $proposal\n";
+			return $msg;
+		}
+		return $changedLinks;
+	}
+
+	function processDiffFile( $callback ) {
+		$diffFile = fopen( "{$this->dataDir}/diff_log", 'r' );
+
+		$delimiter = "------\n";
+		file_put_contents( $this->articleFileName, "Describe the new page here.\n" );
+
+		$line = fgets( $diffFile );
+		$lineNum = 1;
+		if ( $line !== $delimiter ) {
+			echo "Invalid diff file\n";
+			return false;
+		}
+		$lastReportLine = 0;
+		$this->numRevs = 0;
+
+		while ( true ) {
+			$line = fgets( $diffFile );
+			$lineNum++;
+			if ( $line === false ) {
+				break;
+			}
+			if ( $lineNum > $lastReportLine + 1000 ) {
+				$lastReportLine = $lineNum;
+				fwrite( STDERR, "$lineNum       \r" );
+				fflush( STDERR );
+			}
+			$line = trim( $line );
+			if ( !preg_match( '/^([^|]+)\|(\d+)$/', $line, $matches ) ) {
+				echo "Invalid header on line $lineNum\n";
+				return true;
+			}
+			list( , $title, $editTime ) = $matches;
+
+			$diff = '';
+			$diffStartLine = $lineNum;
+			while ( true ) {
+				$line = fgets( $diffFile );
+				$lineNum++;
+				if ( $line === $delimiter ) {
+					break;
+				}
+				if ( $line === false ) {
+					break 2;
+				}
+				$diff .= $line;
+			}
+
+			$this->numRevs++;
+
+			if ( !isset( $this->rc[$editTime] ) ) {
+				$this->printLatin1( "$editTime $title DELETED, skipping\n" );
+				continue;
+			}
+
+			if ( count( $this->rc[$editTime] ) == 1 ) {
+				$params = $this->rc[$editTime][0];
+			} else {
+				$params = false;
+				$candidates = '';
+				foreach ( $this->rc[$editTime] as $rc ) {
+					if ( $rc['rctitle'] === $title ) {
+						$params = $rc;
+						break;
+					}
+					if ( $candidates === '' ) {
+						$candidates = $rc['rctitle'];
+					} else {
+						$candidates .= ', ' . $rc['rctitle'];
+					}
+				}
+				if ( !$params ) {
+					$this->printLatin1( "$editTime $title ERROR cannot resolve rclog\n" );
+					$this->printLatin1( "$editTime $title CANDIDATES: $candidates\n" );
+					continue;
+				}
+			}
+			$params['diff'] = $diff;
+			$params['title'] = $title;
+			$params['diffStartLine'] = $diffStartLine;
+			call_user_func( $callback, $params );
+		}
+		echo "\n";
+
+		if ( !feof( $diffFile ) ) {
+			echo "Stopped at line $lineNum\n";
+		}
+		return true;
+	}
+
+	function reconcileCurrentRevs() {
+		foreach ( $this->textCache as $title => $text ) {
+			$fileName = "{$this->dataDir}/page/";
+			if ( preg_match( '/^[A-Z]/', $title, $m ) ) {
+				$fileName .= $m[0];
+			} else {
+				$fileName .= 'other';
+			}
+			$fileName .= "/$title.db";
+
+			if ( !file_exists( $fileName ) ) {
+				$this->printLatin1( "ERROR: Cannot find page file for {$title}\n" );
+				continue;
+			}
+
+			$fileContents = file_get_contents( $fileName );
+			$page = $this->unserializeUseMod( $fileContents, $this->FS1 );
+			$section = $this->unserializeUseMod( $page['text_default'], $this->FS2 );
+			$data = $this->unserializeUseMod( $section['data'], $this->FS3 );
+			$pageText = $data['text'];
+			if ( $text !== $pageText ) {
+				$substs = $this->resolveTextChange( $text, $pageText );
+				if ( is_array( $substs ) ) {
+					foreach ( $substs as $source => $dest ) {
+						if ( isset( $this->moveLog[$dest] ) ) {
+							$this->printLatin1( "ERROR: need deep rename: $source\n" );
+						} else {
+							$this->printLatin1( "ERROR: need substitute: $source -> $dest\n" );
+						}
+					}
+				} else {
+					$this->printLatin1( "ERROR: unresolved diff in $title:\n" );
+					wfSuppressWarnings();
+					$diff = xdiff_string_diff( $text, $pageText ) . '';
+					wfRestoreWarnings();
+					$this->printLatin1( "$diff\n" );
+				}
+			}
+		}
+	}
+
+	function makeTitle( $titleText ) {
+		return Title::newFromText( $this->encode( $titleText ) );
+	}
+
+	function getText( $titleText ) {
+		if ( !isset( $this->textCache[$titleText] ) ) {
+			return "Describe the new page here.\n";
+		} else {
+			return $this->textCache[$titleText];
+		}
+	}
+
+	function saveRevision( $params ) {
+		$this->textCache[$params['rctitle']] = $params['text'];
+
+		$out = "<page>\n" .
+			$this->element( 'title', $params['rctitle'] ) . 
+			"<revision>\n" .
+			$this->element( 'id', $this->revId ++ ) .
+			$this->element( 'timestamp', wfTimestamp( TS_ISO_8601, $params['timestamp'] ) ) .
+			"<contributor>\n";
+		if ( isset( $params['extra']['name'] ) ) {
+			$out .= $this->element( 'username', $params['extra']['name'] );
+		}
+		if ( isset( $params['extra']['id'] ) ) {
+			$out .= $this->element( 'id', $params['extra']['id'] );
+		}
+		if ( isset( $params['host'] ) ) {
+			$out .= $this->element( 'ip', $params['host'] );
+		}
+		$out .=
+			"</contributor>\n" .
+			$this->element( 'comment', $params['summary'] ) .
+			"<text xml:space=\"preserve\">" . 
+			htmlspecialchars( $this->encode( $params['text'] ) ) .
+			"</text>\n" .
+			"</revision>\n" . 
+			"</page>\n";
+		fwrite( $this->outFile, $out );
+	}
+
+	function renameTextLinks( $old, $new, $timestamp ) {
+		$newWithUnderscores = $new;
+		$old = str_replace( '_', ' ', $old );
+		$new = str_replace( '_', ' ', $new );
+
+		foreach ( $this->textCache as $title => $oldText ) {
+			if ( $newWithUnderscores === $title
+				&& in_array( $title, $this->skipSelfSubstitution ) ) 
+			{
+				// Hack to make Pythagorean_Theorem etc. work
+				continue;
+			}
+
+			$newText = $this->substituteTextLinks( $old, $new, $oldText );
+			if ( $oldText !== $newText ) {
+				$this->saveRevision( array(
+					'rctitle' => $title,
+					'timestamp' => $timestamp,
+					'text' => $newText,
+					'extra' => array( 'name' => 'Page move link fixup script' ),
+					'summary' => '',
+					'minor' => true
+				) );
+			}
+		}
+	}
+
+	function substituteTextLinks( $old, $new, $text ) {
+		$this->saveUrl = array();
+		$this->old = $old;
+		$this->new = $new;
+
+		$text = str_replace( $this->FS, '', $text ); # Remove separators (paranoia)
+		$text = preg_replace_callback( '/(<pre>(.*?)<\/pre>)/is', 
+			array( $this, 'storeRaw' ), $text );
+		$text = preg_replace_callback( '/(<code>(.*?)<\/code>)/is', 
+			array( $this, 'storeRaw' ), $text );
+		$text = preg_replace_callback( '/(<nowiki>(.*?)<\/nowiki>)/s', 
+			array( $this, 'storeRaw' ), $text );
+
+		$text = preg_replace_callback( "/\[\[{$this->FreeLinkPattern}\|([^\]]+)\]\]/",
+			array( $this, 'subFreeLink' ), $text );
+		$text = preg_replace_callback( "/\[\[{$this->FreeLinkPattern}\]\]/",
+			array( $this, 'subFreeLink' ), $text );
+		$text = preg_replace_callback( "/(\[{$this->UrlPattern}\s+([^\]]+?)\])/", 
+			array( $this, 'storeRaw' ), $text );
+		$text = preg_replace_callback( "/(\[{$this->InterLinkPattern}\s+([^\]]+?)\])/", 
+			array( $this, 'storeRaw' ), $text );
+		$text = preg_replace_callback( "/(\[?{$this->UrlPattern}\]?)/", 
+			array( $this, 'storeRaw' ), $text );
+		$text = preg_replace_callback( "/(\[?{$this->InterLinkPattern}\]?)/",
+			array( $this, 'storeRaw' ), $text );
+		$text = preg_replace_callback( "/{$this->LinkPattern}/", 
+			array( $this, 'subWikiLink' ), $text );
+
+		$text = preg_replace_callback( "/{$this->FS}(\d+){$this->FS}/", 
+			array( $this, 'restoreRaw' ), $text );   # Restore saved text
+		return $text;
+	}
+
+	function getLinkList( $text ) {
+		$this->saveUrl = array();
+		$this->linkList = array();
+
+		$text = str_replace( $this->FS, '', $text ); # Remove separators (paranoia)
+		$text = preg_replace_callback( '/(<pre>(.*?)<\/pre>)/is', 
+			array( $this, 'storeRaw' ), $text );
+		$text = preg_replace_callback( '/(<code>(.*?)<\/code>)/is', 
+			array( $this, 'storeRaw' ), $text );
+		$text = preg_replace_callback( '/(<nowiki>(.*?)<\/nowiki>)/s', 
+			array( $this, 'storeRaw' ), $text );
+
+		$text = preg_replace_callback( "/\[\[{$this->FreeLinkPattern}\|([^\]]+)\]\]/",
+			array( $this, 'storeLink' ), $text );
+		$text = preg_replace_callback( "/\[\[{$this->FreeLinkPattern}\]\]/",
+			array( $this, 'storeLink' ), $text );
+		$text = preg_replace_callback( "/(\[{$this->UrlPattern}\s+([^\]]+?)\])/", 
+			array( $this, 'storeRaw' ), $text );
+		$text = preg_replace_callback( "/(\[{$this->InterLinkPattern}\s+([^\]]+?)\])/", 
+			array( $this, 'storeRaw' ), $text );
+		$text = preg_replace_callback( "/(\[?{$this->UrlPattern}\]?)/", 
+			array( $this, 'storeRaw' ), $text );
+		$text = preg_replace_callback( "/(\[?{$this->InterLinkPattern}\]?)/",
+			array( $this, 'storeRaw' ), $text );
+		$text = preg_replace_callback( "/{$this->LinkPattern}/", 
+			array( $this, 'storeLink' ), $text );
+
+		return $this->linkList;
+	}
+
+	function storeRaw( $m ) {
+		$this->saveUrl[] = $m[1];
+		return $this->FS . (count( $this->saveUrl ) - 1) . $this->FS;
+	}
+
+	function subFreeLink( $m ) {
+		$link = $m[1];
+		if ( isset( $m[2] ) ) {
+			$name = $m[2];
+		} else {
+			$name = '';
+		}
+		$oldlink = $link;
+		$link = preg_replace( '/^\s+/', '', $link );
+		$link = preg_replace( '/\s+$/', '', $link );
+		if ( $link == $this->old ) {
+			$link = $this->new;
+		} else {
+			$link = $oldlink;  # Preserve spaces if no match
+		}
+		$link = "[[$link";
+		if ( $name !== "" ) {
+			$link .= "|$name";
+		}
+		$link .= "]]";
+		return $this->storeRaw( array( 1 => $link ) );
+	}
+
+	function subWikiLink( $m ) {
+		$link = $m[1];
+		if ( $link == $this->old ) {
+			$link = $this->new;
+			if ( !preg_match( "/^{$this->LinkPattern}$/", $this->new ) ) {
+				$link = "[[$link]]";
+			}
+		}
+		return $this->storeRaw( array( 1 => $link ) );
+	}
+
+	function restoreRaw( $m ) {
+		return $this->saveUrl[$m[1]];
+	}
+
+	function storeLink( $m ) {
+		$this->linkList[] = $m[1];
+		return $this->storeRaw( $m );
+	}
+
+	function encode( $s ) {
+		return strtr( $s, $this->encodeMap );
+	}
+
+	function decode( $s ) {
+		return strtr( $s, $this->decodeMap );
+	}
+
+	function printLatin1( $s ) {
+		echo $this->encode( $s );
+	}
+
+	function unserializeUseMod( $s, $sep ) {
+		$parts = explode( $sep, $s );
+		$result = array();
+		for ( $i = 0; $i < count( $parts ); $i += 2 ) {
+			$result[$parts[$i]] = $parts[$i+1];
+		}
+		return $result;
+	}
+}
+
+$maintClass = 'ImportUseModWikipedia';
+require_once( RUN_MAINTENANCE_IF_MAIN );