MediaWiki 1.7.1 wiederhergestellt

1 files changed, 2005 insertions, 0 deletions

diff --git a/includes/GlobalFunctions.php b/includes/GlobalFunctions.php
new file mode 100644
index 00000000..e2033486
--- /dev/null
+++ b/includes/GlobalFunctions.php
@@ -0,0 +1,2005 @@
+<?php
+
+/**
+ * Global functions used everywhere
+ * @package MediaWiki
+ */
+
+/**
+ * Some globals and requires needed
+ */
+
+/**
+ * Total number of articles
+ * @global integer $wgNumberOfArticles
+ */
+$wgNumberOfArticles = -1; # Unset
+/**
+ * Total number of views
+ * @global integer $wgTotalViews
+ */
+$wgTotalViews = -1;
+/**
+ * Total number of edits
+ * @global integer $wgTotalEdits
+ */
+$wgTotalEdits = -1;
+
+
+require_once( 'DatabaseFunctions.php' );
+require_once( 'LogPage.php' );
+require_once( 'normal/UtfNormalUtil.php' );
+require_once( 'XmlFunctions.php' );
+
+/**
+ * Compatibility functions
+ * PHP <4.3.x is not actively supported; 4.1.x and 4.2.x might or might not work.
+ * <4.1.x will not work, as we use a number of features introduced in 4.1.0
+ * such as the new autoglobals.
+ */
+if( !function_exists('iconv') ) {
+	# iconv support is not in the default configuration and so may not be present.
+	# Assume will only ever use utf-8 and iso-8859-1.
+	# This will *not* work in all circumstances.
+	function iconv( $from, $to, $string ) {
+		if(strcasecmp( $from, $to ) == 0) return $string;
+		if(strcasecmp( $from, 'utf-8' ) == 0) return utf8_decode( $string );
+		if(strcasecmp( $to, 'utf-8' ) == 0) return utf8_encode( $string );
+		return $string;
+	}
+}
+
+if( !function_exists('file_get_contents') ) {
+	# Exists in PHP 4.3.0+
+	function file_get_contents( $filename ) {
+		return implode( '', file( $filename ) );
+	}
+}
+
+if( !function_exists('is_a') ) {
+	# Exists in PHP 4.2.0+
+	function is_a( $object, $class_name ) {
+		return
+			(strcasecmp( get_class( $object ), $class_name ) == 0) ||
+			 is_subclass_of( $object, $class_name );
+	}
+}
+
+# UTF-8 substr function based on a PHP manual comment
+if ( !function_exists( 'mb_substr' ) ) {
+	function mb_substr( $str, $start ) {
+		preg_match_all( '/./us', $str, $ar );
+
+		if( func_num_args() >= 3 ) {
+			$end = func_get_arg( 2 );
+			return join( '', array_slice( $ar[0], $start, $end ) );
+		} else {
+			return join( '', array_slice( $ar[0], $start ) );
+		}
+	}
+}
+
+if( !function_exists( 'floatval' ) ) {
+	/**
+	 * First defined in PHP 4.2.0
+	 * @param mixed $var;
+	 * @return float
+	 */
+	function floatval( $var ) {
+		return (float)$var;
+	}
+}
+
+if ( !function_exists( 'array_diff_key' ) ) {
+	/**
+	 * Exists in PHP 5.1.0+
+	 * Not quite compatible, two-argument version only
+	 * Null values will cause problems due to this use of isset()
+	 */
+	function array_diff_key( $left, $right ) {
+		$result = $left;
+		foreach ( $left as $key => $value ) {
+			if ( isset( $right[$key] ) ) {
+				unset( $result[$key] );
+			}
+		}
+		return $result;
+	}
+}
+
+
+/**
+ * Wrapper for clone() for PHP 4, for the moment.
+ * PHP 5 won't let you declare a 'clone' function, even conditionally,
+ * so it has to be a wrapper with a different name.
+ */
+function wfClone( $object ) {
+	// WARNING: clone() is not a function in PHP 5, so function_exists fails.
+	if( version_compare( PHP_VERSION, '5.0' ) < 0 ) {
+		return $object;
+	} else {
+		return clone( $object );
+	}
+}
+
+/**
+ * Where as we got a random seed
+ * @var bool $wgTotalViews
+ */
+$wgRandomSeeded = false;
+
+/**
+ * Seed Mersenne Twister
+ * Only necessary in PHP < 4.2.0
+ *
+ * @return bool
+ */
+function wfSeedRandom() {
+	global $wgRandomSeeded;
+
+	if ( ! $wgRandomSeeded && version_compare( phpversion(), '4.2.0' ) < 0 ) {
+		$seed = hexdec(substr(md5(microtime()),-8)) & 0x7fffffff;
+		mt_srand( $seed );
+		$wgRandomSeeded = true;
+	}
+}
+
+/**
+ * Get a random decimal value between 0 and 1, in a way
+ * not likely to give duplicate values for any realistic
+ * number of articles.
+ *
+ * @return string
+ */
+function wfRandom() {
+	# The maximum random value is "only" 2^31-1, so get two random
+	# values to reduce the chance of dupes
+	$max = mt_getrandmax();
+	$rand = number_format( (mt_rand() * $max + mt_rand())
+		/ $max / $max, 12, '.', '' );
+	return $rand;
+}
+
+/**
+ * We want / and : to be included as literal characters in our title URLs.
+ * %2F in the page titles seems to fatally break for some reason.
+ *
+ * @param $s String:
+ * @return string
+*/
+function wfUrlencode ( $s ) {
+	$s = urlencode( $s );
+	$s = preg_replace( '/%3[Aa]/', ':', $s );
+	$s = preg_replace( '/%2[Ff]/', '/', $s );
+
+	return $s;
+}
+
+/**
+ * Sends a line to the debug log if enabled or, optionally, to a comment in output.
+ * In normal operation this is a NOP.
+ *
+ * Controlling globals:
+ * $wgDebugLogFile - points to the log file
+ * $wgProfileOnly - if set, normal debug messages will not be recorded.
+ * $wgDebugRawPage - if false, 'action=raw' hits will not result in debug output.
+ * $wgDebugComments - if on, some debug items may appear in comments in the HTML output.
+ *
+ * @param $text String
+ * @param $logonly Bool: set true to avoid appearing in HTML when $wgDebugComments is set
+ */
+function wfDebug( $text, $logonly = false ) {
+	global $wgOut, $wgDebugLogFile, $wgDebugComments, $wgProfileOnly, $wgDebugRawPage;
+
+	# Check for raw action using $_GET not $wgRequest, since the latter might not be initialised yet
+	if ( isset( $_GET['action'] ) && $_GET['action'] == 'raw' && !$wgDebugRawPage ) {
+		return;
+	}
+
+	if ( isset( $wgOut ) && $wgDebugComments && !$logonly ) {
+		$wgOut->debug( $text );
+	}
+	if ( '' != $wgDebugLogFile && !$wgProfileOnly ) {
+		# Strip unprintables; they can switch terminal modes when binary data
+		# gets dumped, which is pretty annoying.
+		$text = preg_replace( '![\x00-\x08\x0b\x0c\x0e-\x1f]!', ' ', $text );
+		@error_log( $text, 3, $wgDebugLogFile );
+	}
+}
+
+/**
+ * Send a line to a supplementary debug log file, if configured, or main debug log if not.
+ * $wgDebugLogGroups[$logGroup] should be set to a filename to send to a separate log.
+ *
+ * @param $logGroup String
+ * @param $text String
+ * @param $public Bool: whether to log the event in the public log if no private
+ *                     log file is specified, (default true)
+ */
+function wfDebugLog( $logGroup, $text, $public = true ) {
+	global $wgDebugLogGroups, $wgDBname;
+	if( $text{strlen( $text ) - 1} != "\n" ) $text .= "\n";
+	if( isset( $wgDebugLogGroups[$logGroup] ) ) {
+		$time = wfTimestamp( TS_DB );
+		@error_log( "$time $wgDBname: $text", 3, $wgDebugLogGroups[$logGroup] );
+	} else if ( $public === true ) {
+		wfDebug( $text, true );
+	}
+}
+
+/**
+ * Log for database errors
+ * @param $text String: database error message.
+ */
+function wfLogDBError( $text ) {
+	global $wgDBerrorLog;
+	if ( $wgDBerrorLog ) {
+		$host = trim(`hostname`);
+		$text = date('D M j G:i:s T Y') . "\t$host\t".$text;
+		error_log( $text, 3, $wgDBerrorLog );
+	}
+}
+
+/**
+ * @todo document
+ */
+function logProfilingData() {
+	global $wgRequestTime, $wgDebugLogFile, $wgDebugRawPage, $wgRequest;
+	global $wgProfiling, $wgUser;
+	$now = wfTime();
+
+	$elapsed = $now - $wgRequestTime;
+	if ( $wgProfiling ) {
+		$prof = wfGetProfilingOutput( $wgRequestTime, $elapsed );
+		$forward = '';
+		if( !empty( $_SERVER['HTTP_X_FORWARDED_FOR'] ) )
+			$forward = ' forwarded for ' . $_SERVER['HTTP_X_FORWARDED_FOR'];
+		if( !empty( $_SERVER['HTTP_CLIENT_IP'] ) )
+			$forward .= ' client IP ' . $_SERVER['HTTP_CLIENT_IP'];
+		if( !empty( $_SERVER['HTTP_FROM'] ) )
+			$forward .= ' from ' . $_SERVER['HTTP_FROM'];
+		if( $forward )
+			$forward = "\t(proxied via {$_SERVER['REMOTE_ADDR']}{$forward})";
+		if( is_object($wgUser) && $wgUser->isAnon() )
+			$forward .= ' anon';
+		$log = sprintf( "%s\t%04.3f\t%s\n",
+		  gmdate( 'YmdHis' ), $elapsed,
+		  urldecode( $_SERVER['REQUEST_URI'] . $forward ) );
+		if ( '' != $wgDebugLogFile && ( $wgRequest->getVal('action') != 'raw' || $wgDebugRawPage ) ) {
+			error_log( $log . $prof, 3, $wgDebugLogFile );
+		}
+	}
+}
+
+/**
+ * Check if the wiki read-only lock file is present. This can be used to lock
+ * off editing functions, but doesn't guarantee that the database will not be
+ * modified.
+ * @return bool
+ */
+function wfReadOnly() {
+	global $wgReadOnlyFile, $wgReadOnly;
+
+	if ( !is_null( $wgReadOnly ) ) {
+		return (bool)$wgReadOnly;
+	}
+	if ( '' == $wgReadOnlyFile ) {
+		return false;
+	}
+	// Set $wgReadOnly for faster access next time
+	if ( is_file( $wgReadOnlyFile ) ) {
+		$wgReadOnly = file_get_contents( $wgReadOnlyFile );
+	} else {
+		$wgReadOnly = false;
+	}
+	return (bool)$wgReadOnly;
+}
+
+
+/**
+ * Get a message from anywhere, for the current user language.
+ *
+ * Use wfMsgForContent() instead if the message should NOT
+ * change depending on the user preferences.
+ *
+ * Note that the message may contain HTML, and is therefore
+ * not safe for insertion anywhere. Some functions such as
+ * addWikiText will do the escaping for you. Use wfMsgHtml()
+ * if you need an escaped message.
+ *
+ * @param $key String: lookup key for the message, usually
+ *    defined in languages/Language.php
+ */
+function wfMsg( $key ) {
+	$args = func_get_args();
+	array_shift( $args );
+	return wfMsgReal( $key, $args, true );
+}
+
+/**
+ * Same as above except doesn't transform the message
+ */
+function wfMsgNoTrans( $key ) {
+	$args = func_get_args();
+	array_shift( $args );
+	return wfMsgReal( $key, $args, true, false );
+}
+
+/**
+ * Get a message from anywhere, for the current global language
+ * set with $wgLanguageCode.
+ *
+ * Use this if the message should NOT change  dependent on the
+ * language set in the user's preferences. This is the case for
+ * most text written into logs, as well as link targets (such as
+ * the name of the copyright policy page). Link titles, on the
+ * other hand, should be shown in the UI language.
+ *
+ * Note that MediaWiki allows users to change the user interface
+ * language in their preferences, but a single installation
+ * typically only contains content in one language.
+ *
+ * Be wary of this distinction: If you use wfMsg() where you should
+ * use wfMsgForContent(), a user of the software may have to
+ * customize over 70 messages in order to, e.g., fix a link in every
+ * possible language.
+ *
+ * @param $key String: lookup key for the message, usually
+ *    defined in languages/Language.php
+ */
+function wfMsgForContent( $key ) {
+	global $wgForceUIMsgAsContentMsg;
+	$args = func_get_args();
+	array_shift( $args );
+	$forcontent = true;
+	if( is_array( $wgForceUIMsgAsContentMsg ) &&
+		in_array( $key, $wgForceUIMsgAsContentMsg ) )
+		$forcontent = false;
+	return wfMsgReal( $key, $args, true, $forcontent );
+}
+
+/**
+ * Same as above except doesn't transform the message
+ */
+function wfMsgForContentNoTrans( $key ) {
+	global $wgForceUIMsgAsContentMsg;
+	$args = func_get_args();
+	array_shift( $args );
+	$forcontent = true;
+	if( is_array( $wgForceUIMsgAsContentMsg ) &&
+		in_array( $key, $wgForceUIMsgAsContentMsg ) )
+		$forcontent = false;
+	return wfMsgReal( $key, $args, true, $forcontent, false );
+}
+
+/**
+ * Get a message from the language file, for the UI elements
+ */
+function wfMsgNoDB( $key ) {
+	$args = func_get_args();
+	array_shift( $args );
+	return wfMsgReal( $key, $args, false );
+}
+
+/**
+ * Get a message from the language file, for the content
+ */
+function wfMsgNoDBForContent( $key ) {
+	global $wgForceUIMsgAsContentMsg;
+	$args = func_get_args();
+	array_shift( $args );
+	$forcontent = true;
+	if( is_array( $wgForceUIMsgAsContentMsg ) &&
+		in_array( $key,	$wgForceUIMsgAsContentMsg ) )
+		$forcontent = false;
+	return wfMsgReal( $key, $args, false, $forcontent );
+}
+
+
+/**
+ * Really get a message
+ * @return $key String: key to get.
+ * @return $args
+ * @return $useDB Boolean
+ * @return String: the requested message.
+ */
+function wfMsgReal( $key, $args, $useDB = true, $forContent=false, $transform = true ) {
+	$fname = 'wfMsgReal';
+
+	$message = wfMsgGetKey( $key, $useDB, $forContent, $transform );
+	$message = wfMsgReplaceArgs( $message, $args );
+	return $message;
+}
+
+/**
+ * This function provides the message source for messages to be edited which are *not* stored in the database.
+ * @param $key String:
+ */
+function wfMsgWeirdKey ( $key ) {
+	$subsource = str_replace ( ' ' , '_' , $key ) ;
+	$source = wfMsgForContentNoTrans( $subsource ) ;
+	if ( $source == "&lt;{$subsource}&gt;" ) {
+		# Try again with first char lower case
+		$subsource = strtolower ( substr ( $subsource , 0 , 1 ) ) . substr ( $subsource , 1 ) ;
+		$source = wfMsgForContentNoTrans( $subsource ) ;
+	}
+	if ( $source == "&lt;{$subsource}&gt;" ) {
+		# Didn't work either, return blank text
+		$source = "" ;
+	}
+	return $source ;
+}
+
+/**
+ * Fetch a message string value, but don't replace any keys yet.
+ * @param string $key
+ * @param bool $useDB
+ * @param bool $forContent
+ * @return string
+ * @private
+ */
+function wfMsgGetKey( $key, $useDB, $forContent = false, $transform = true ) {
+	global $wgParser, $wgMsgParserOptions, $wgContLang, $wgMessageCache, $wgLang;
+
+	if ( is_object( $wgMessageCache ) )
+		$transstat = $wgMessageCache->getTransform();
+
+	if( is_object( $wgMessageCache ) ) {
+		if ( ! $transform )
+			$wgMessageCache->disableTransform();
+		$message = $wgMessageCache->get( $key, $useDB, $forContent );
+	} else {
+		if( $forContent ) {
+			$lang = &$wgContLang;
+		} else {
+			$lang = &$wgLang;
+		}
+
+		wfSuppressWarnings();
+
+		if( is_object( $lang ) ) {
+			$message = $lang->getMessage( $key );
+		} else {
+			$message = false;
+		}
+		wfRestoreWarnings();
+		if($message === false)
+			$message = Language::getMessage($key);
+		if ( $transform && strstr( $message, '{{' ) !== false ) {
+			$message = $wgParser->transformMsg($message, $wgMsgParserOptions);
+		}
+	}
+
+	if ( is_object( $wgMessageCache ) && ! $transform )
+		$wgMessageCache->setTransform( $transstat );
+
+	return $message;
+}
+
+/**
+ * Replace message parameter keys on the given formatted output.
+ *
+ * @param string $message
+ * @param array $args
+ * @return string
+ * @private
+ */
+function wfMsgReplaceArgs( $message, $args ) {
+	# Fix windows line-endings
+	# Some messages are split with explode("\n", $msg)
+	$message = str_replace( "\r", '', $message );
+
+	// Replace arguments
+	if ( count( $args ) ) {
+		if ( is_array( $args[0] ) ) {
+			foreach ( $args[0] as $key => $val ) {
+				$message = str_replace( '$' . $key, $val, $message );
+			}
+		} else {
+			foreach( $args as $n => $param ) {
+				$replacementKeys['$' . ($n + 1)] = $param;
+			}
+			$message = strtr( $message, $replacementKeys );
+		}
+	}
+
+	return $message;
+}
+
+/**
+ * Return an HTML-escaped version of a message.
+ * Parameter replacements, if any, are done *after* the HTML-escaping,
+ * so parameters may contain HTML (eg links or form controls). Be sure
+ * to pre-escape them if you really do want plaintext, or just wrap
+ * the whole thing in htmlspecialchars().
+ *
+ * @param string $key
+ * @param string ... parameters
+ * @return string
+ */
+function wfMsgHtml( $key ) {
+	$args = func_get_args();
+	array_shift( $args );
+	return wfMsgReplaceArgs( htmlspecialchars( wfMsgGetKey( $key, true ) ), $args );
+}
+
+/**
+ * Return an HTML version of message
+ * Parameter replacements, if any, are done *after* parsing the wiki-text message,
+ * so parameters may contain HTML (eg links or form controls). Be sure
+ * to pre-escape them if you really do want plaintext, or just wrap
+ * the whole thing in htmlspecialchars().
+ *
+ * @param string $key
+ * @param string ... parameters
+ * @return string
+ */
+function wfMsgWikiHtml( $key ) {
+	global $wgOut;
+	$args = func_get_args();
+	array_shift( $args );
+	return wfMsgReplaceArgs( $wgOut->parse( wfMsgGetKey( $key, true ), /* can't be set to false */ true ), $args );
+}
+
+/**
+ * Returns message in the requested format
+ * @param string $key Key of the message
+ * @param array $options Processing rules:
+ *  <i>parse<i>: parses wikitext to html
+ *  <i>parseinline<i>: parses wikitext to html and removes the surrounding p's added by parser or tidy
+ *  <i>escape<i>: filters message trough htmlspecialchars
+ *  <i>replaceafter<i>: parameters are substituted after parsing or escaping
+ */
+function wfMsgExt( $key, $options ) {
+	global $wgOut, $wgMsgParserOptions, $wgParser;
+
+	$args = func_get_args();
+	array_shift( $args );
+	array_shift( $args );
+
+	if( !is_array($options) ) {
+		$options = array($options);
+	}
+
+	$string = wfMsgGetKey( $key, true, false, false );
+
+	if( !in_array('replaceafter', $options) ) {
+		$string = wfMsgReplaceArgs( $string, $args );
+	}
+
+	if( in_array('parse', $options) ) {
+		$string = $wgOut->parse( $string, true, true );
+	} elseif ( in_array('parseinline', $options) ) {
+		$string = $wgOut->parse( $string, true, true );
+		$m = array();
+		if( preg_match( "~^<p>(.*)\n?</p>$~", $string, $m ) ) {
+			$string = $m[1];
+		}
+	} elseif ( in_array('parsemag', $options) ) {
+		global $wgTitle;
+		$parser = new Parser();
+		$parserOptions = new ParserOptions();
+		$parserOptions->setInterfaceMessage( true );
+		$parser->startExternalParse( $wgTitle, $parserOptions, OT_MSG );
+		$string = $parser->transformMsg( $string, $parserOptions );
+	}
+
+	if ( in_array('escape', $options) ) {
+		$string = htmlspecialchars ( $string );
+	}
+
+	if( in_array('replaceafter', $options) ) {
+		$string = wfMsgReplaceArgs( $string, $args );
+	}
+
+	return $string;
+}
+
+
+/**
+ * Just like exit() but makes a note of it.
+ * Commits open transactions except if the error parameter is set
+ *
+ * @obsolete Please return control to the caller or throw an exception
+ */
+function wfAbruptExit( $error = false ){
+	global $wgLoadBalancer;
+	static $called = false;
+	if ( $called ){
+		exit( -1 );
+	}
+	$called = true;
+
+	if( function_exists( 'debug_backtrace' ) ){ // PHP >= 4.3
+		$bt = debug_backtrace();
+		for($i = 0; $i < count($bt) ; $i++){
+			$file = isset($bt[$i]['file']) ? $bt[$i]['file'] : "unknown";
+			$line = isset($bt[$i]['line']) ? $bt[$i]['line'] : "unknown";
+			wfDebug("WARNING: Abrupt exit in $file at line $line\n");
+		}
+	} else {
+		wfDebug('WARNING: Abrupt exit\n');
+	}
+
+	wfProfileClose();
+	logProfilingData();
+
+	if ( !$error ) {
+		$wgLoadBalancer->closeAll();
+	}
+	exit( -1 );
+}
+
+/**
+ * @obsolete Please return control the caller or throw an exception
+ */
+function wfErrorExit() {
+	wfAbruptExit( true );
+}
+
+/**
+ * Print a simple message and die, returning nonzero to the shell if any.
+ * Plain die() fails to return nonzero to the shell if you pass a string.
+ * @param string $msg
+ */
+function wfDie( $msg='' ) {
+	echo $msg;
+	die( 1 );
+}
+
+/**
+ * Throw a debugging exception. This function previously once exited the process, 
+ * but now throws an exception instead, with similar results.
+ *
+ * @param string $msg Message shown when dieing.
+ */
+function wfDebugDieBacktrace( $msg = '' ) {
+	throw new MWException( $msg );
+}
+
+/**
+ * Fetch server name for use in error reporting etc.
+ * Use real server name if available, so we know which machine
+ * in a server farm generated the current page.
+ * @return string
+ */
+function wfHostname() {
+	if ( function_exists( 'posix_uname' ) ) {
+		// This function not present on Windows
+		$uname = @posix_uname();
+	} else {
+		$uname = false;
+	}
+	if( is_array( $uname ) && isset( $uname['nodename'] ) ) {
+		return $uname['nodename'];
+	} else {
+		# This may be a virtual server.
+		return $_SERVER['SERVER_NAME'];
+	}
+}
+
+	/**
+	 * Returns a HTML comment with the elapsed time since request.
+	 * This method has no side effects.
+	 * @return string
+	 */
+	function wfReportTime() {
+		global $wgRequestTime;
+
+		$now = wfTime();
+		$elapsed = $now - $wgRequestTime;
+
+		$com = sprintf( "<!-- Served by %s in %01.3f secs. -->",
+		  wfHostname(), $elapsed );
+		return $com;
+	}
+
+function wfBacktrace() {
+	global $wgCommandLineMode;
+	if ( !function_exists( 'debug_backtrace' ) ) {
+		return false;
+	}
+
+	if ( $wgCommandLineMode ) {
+		$msg = '';
+	} else {
+		$msg = "<ul>\n";
+	}
+	$backtrace = debug_backtrace();
+	foreach( $backtrace as $call ) {
+		if( isset( $call['file'] ) ) {
+			$f = explode( DIRECTORY_SEPARATOR, $call['file'] );
+			$file = $f[count($f)-1];
+		} else {
+			$file = '-';
+		}
+		if( isset( $call['line'] ) ) {
+			$line = $call['line'];
+		} else {
+			$line = '-';
+		}
+		if ( $wgCommandLineMode ) {
+			$msg .= "$file line $line calls ";
+		} else {
+			$msg .= '<li>' . $file . ' line ' . $line . ' calls ';
+		}
+		if( !empty( $call['class'] ) ) $msg .= $call['class'] . '::';
+		$msg .= $call['function'] . '()';
+
+		if ( $wgCommandLineMode ) {
+			$msg .= "\n";
+		} else {
+			$msg .= "</li>\n";
+		}
+	}
+	if ( $wgCommandLineMode ) {
+		$msg .= "\n";
+	} else {
+		$msg .= "</ul>\n";
+	}
+
+	return $msg;
+}
+
+
+/* Some generic result counters, pulled out of SearchEngine */
+
+
+/**
+ * @todo document
+ */
+function wfShowingResults( $offset, $limit ) {
+	global $wgLang;
+	return wfMsg( 'showingresults', $wgLang->formatNum( $limit ), $wgLang->formatNum( $offset+1 ) );
+}
+
+/**
+ * @todo document
+ */
+function wfShowingResultsNum( $offset, $limit, $num ) {
+	global $wgLang;
+	return wfMsg( 'showingresultsnum', $wgLang->formatNum( $limit ), $wgLang->formatNum( $offset+1 ), $wgLang->formatNum( $num ) );
+}
+
+/**
+ * @todo document
+ */
+function wfViewPrevNext( $offset, $limit, $link, $query = '', $atend = false ) {
+	global $wgLang;
+	$fmtLimit = $wgLang->formatNum( $limit );
+	$prev = wfMsg( 'prevn', $fmtLimit );
+	$next = wfMsg( 'nextn', $fmtLimit );
+
+	if( is_object( $link ) ) {
+		$title =& $link;
+	} else {
+		$title = Title::newFromText( $link );
+		if( is_null( $title ) ) {
+			return false;
+		}
+	}
+
+	if ( 0 != $offset ) {
+		$po = $offset - $limit;
+		if ( $po < 0 ) { $po = 0; }
+		$q = "limit={$limit}&offset={$po}";
+		if ( '' != $query ) { $q .= '&'.$query; }
+		$plink = '<a href="' . $title->escapeLocalUrl( $q ) . "\">{$prev}</a>";
+	} else { $plink = $prev; }
+
+	$no = $offset + $limit;
+	$q = 'limit='.$limit.'&offset='.$no;
+	if ( '' != $query ) { $q .= '&'.$query; }
+
+	if ( $atend ) {
+		$nlink = $next;
+	} else {
+		$nlink = '<a href="' . $title->escapeLocalUrl( $q ) . "\">{$next}</a>";
+	}
+	$nums = wfNumLink( $offset, 20, $title, $query ) . ' | ' .
+	  wfNumLink( $offset, 50, $title, $query ) . ' | ' .
+	  wfNumLink( $offset, 100, $title, $query ) . ' | ' .
+	  wfNumLink( $offset, 250, $title, $query ) . ' | ' .
+	  wfNumLink( $offset, 500, $title, $query );
+
+	return wfMsg( 'viewprevnext', $plink, $nlink, $nums );
+}
+
+/**
+ * @todo document
+ */
+function wfNumLink( $offset, $limit, &$title, $query = '' ) {
+	global $wgLang;
+	if ( '' == $query ) { $q = ''; }
+	else { $q = $query.'&'; }
+	$q .= 'limit='.$limit.'&offset='.$offset;
+
+	$fmtLimit = $wgLang->formatNum( $limit );
+	$s = '<a href="' . $title->escapeLocalUrl( $q ) . "\">{$fmtLimit}</a>";
+	return $s;
+}
+
+/**
+ * @todo document
+ * @todo FIXME: we may want to blacklist some broken browsers
+ *
+ * @return bool Whereas client accept gzip compression
+ */
+function wfClientAcceptsGzip() {
+	global $wgUseGzip;
+	if( $wgUseGzip ) {
+		# FIXME: we may want to blacklist some broken browsers
+		if( preg_match(
+			'/\bgzip(?:;(q)=([0-9]+(?:\.[0-9]+)))?\b/',
+			$_SERVER['HTTP_ACCEPT_ENCODING'],
+			$m ) ) {
+			if( isset( $m[2] ) && ( $m[1] == 'q' ) && ( $m[2] == 0 ) ) return false;
+			wfDebug( " accepts gzip\n" );
+			return true;
+		}
+	}
+	return false;
+}
+
+/**
+ * Obtain the offset and limit values from the request string;
+ * used in special pages
+ *
+ * @param $deflimit Default limit if none supplied
+ * @param $optionname Name of a user preference to check against
+ * @return array
+ * 
+ */
+function wfCheckLimits( $deflimit = 50, $optionname = 'rclimit' ) {
+	global $wgRequest;
+	return $wgRequest->getLimitOffset( $deflimit, $optionname );
+}
+
+/**
+ * Escapes the given text so that it may be output using addWikiText()
+ * without any linking, formatting, etc. making its way through. This
+ * is achieved by substituting certain characters with HTML entities.
+ * As required by the callers, <nowiki> is not used. It currently does
+ * not filter out characters which have special meaning only at the
+ * start of a line, such as "*".
+ *
+ * @param string $text Text to be escaped
+ */
+function wfEscapeWikiText( $text ) {
+	$text = str_replace(
+		array( '[',		'|',	  '\'',	   'ISBN '	  , '://'	  , "\n=", '{{' ),
+		array( '&#91;', '&#124;', '&#39;', 'ISBN&#32;', '&#58;//' , "\n&#61;", '&#123;&#123;' ),
+		htmlspecialchars($text) );
+	return $text;
+}
+
+/**
+ * @todo document
+ */
+function wfQuotedPrintable( $string, $charset = '' ) {
+	# Probably incomplete; see RFC 2045
+	if( empty( $charset ) ) {
+		global $wgInputEncoding;
+		$charset = $wgInputEncoding;
+	}
+	$charset = strtoupper( $charset );
+	$charset = str_replace( 'ISO-8859', 'ISO8859', $charset ); // ?
+
+	$illegal = '\x00-\x08\x0b\x0c\x0e-\x1f\x7f-\xff=';
+	$replace = $illegal . '\t ?_';
+	if( !preg_match( "/[$illegal]/", $string ) ) return $string;
+	$out = "=?$charset?Q?";
+	$out .= preg_replace( "/([$replace])/e", 'sprintf("=%02X",ord("$1"))', $string );
+	$out .= '?=';
+	return $out;
+}
+
+
+/**
+ * @todo document
+ * @return float
+ */
+function wfTime() {
+	return microtime(true);
+}
+
+/**
+ * Sets dest to source and returns the original value of dest
+ * If source is NULL, it just returns the value, it doesn't set the variable
+ */
+function wfSetVar( &$dest, $source ) {
+	$temp = $dest;
+	if ( !is_null( $source ) ) {
+		$dest = $source;
+	}
+	return $temp;
+}
+
+/**
+ * As for wfSetVar except setting a bit
+ */
+function wfSetBit( &$dest, $bit, $state = true ) {
+	$temp = (bool)($dest & $bit );
+	if ( !is_null( $state ) ) {
+		if ( $state ) {
+			$dest |= $bit;
+		} else {
+			$dest &= ~$bit;
+		}
+	}
+	return $temp;
+}
+
+/**
+ * This function takes two arrays as input, and returns a CGI-style string, e.g.
+ * "days=7&limit=100". Options in the first array override options in the second.
+ * Options set to "" will not be output.
+ */
+function wfArrayToCGI( $array1, $array2 = NULL )
+{
+	if ( !is_null( $array2 ) ) {
+		$array1 = $array1 + $array2;
+	}
+
+	$cgi = '';
+	foreach ( $array1 as $key => $value ) {
+		if ( '' !== $value ) {
+			if ( '' != $cgi ) {
+				$cgi .= '&';
+			}
+			$cgi .= urlencode( $key ) . '=' . urlencode( $value );
+		}
+	}
+	return $cgi;
+}
+
+/**
+ * This is obsolete, use SquidUpdate::purge()
+ * @deprecated
+ */
+function wfPurgeSquidServers ($urlArr) {
+	SquidUpdate::purge( $urlArr );
+}
+
+/**
+ * Windows-compatible version of escapeshellarg()
+ * Windows doesn't recognise single-quotes in the shell, but the escapeshellarg()
+ * function puts single quotes in regardless of OS
+ */
+function wfEscapeShellArg( ) {
+	$args = func_get_args();
+	$first = true;
+	$retVal = '';
+	foreach ( $args as $arg ) {
+		if ( !$first ) {
+			$retVal .= ' ';
+		} else {
+			$first = false;
+		}
+
+		if ( wfIsWindows() ) {
+			// Escaping for an MSVC-style command line parser
+			// Ref: http://mailman.lyra.org/pipermail/scite-interest/2002-March/000436.html
+			// Double the backslashes before any double quotes. Escape the double quotes.
+			$tokens = preg_split( '/(\\\\*")/', $arg, -1, PREG_SPLIT_DELIM_CAPTURE );
+			$arg = '';
+			$delim = false;
+			foreach ( $tokens as $token ) {
+				if ( $delim ) {
+					$arg .= str_replace( '\\', '\\\\', substr( $token, 0, -1 ) ) . '\\"';
+				} else {
+					$arg .= $token;
+				}
+				$delim = !$delim;
+			}
+			// Double the backslashes before the end of the string, because
+			// we will soon add a quote
+			if ( preg_match( '/^(.*?)(\\\\+)$/', $arg, $m ) ) {
+				$arg = $m[1] . str_replace( '\\', '\\\\', $m[2] );
+			}
+
+			// Add surrounding quotes
+			$retVal .= '"' . $arg . '"';
+		} else {
+			$retVal .= escapeshellarg( $arg );
+		}
+	}
+	return $retVal;
+}
+
+/**
+ * wfMerge attempts to merge differences between three texts.
+ * Returns true for a clean merge and false for failure or a conflict.
+ */
+function wfMerge( $old, $mine, $yours, &$result ){
+	global $wgDiff3;
+
+	# This check may also protect against code injection in
+	# case of broken installations.
+	if(! file_exists( $wgDiff3 ) ){
+		wfDebug( "diff3 not found\n" );
+		return false;
+	}
+
+	# Make temporary files
+	$td = wfTempDir();
+	$oldtextFile = fopen( $oldtextName = tempnam( $td, 'merge-old-' ), 'w' );
+	$mytextFile = fopen( $mytextName = tempnam( $td, 'merge-mine-' ), 'w' );
+	$yourtextFile = fopen( $yourtextName = tempnam( $td, 'merge-your-' ), 'w' );
+
+	fwrite( $oldtextFile, $old ); fclose( $oldtextFile );
+	fwrite( $mytextFile, $mine ); fclose( $mytextFile );
+	fwrite( $yourtextFile, $yours ); fclose( $yourtextFile );
+
+	# Check for a conflict
+	$cmd = $wgDiff3 . ' -a --overlap-only ' .
+	  wfEscapeShellArg( $mytextName ) . ' ' .
+	  wfEscapeShellArg( $oldtextName ) . ' ' .
+	  wfEscapeShellArg( $yourtextName );
+	$handle = popen( $cmd, 'r' );
+
+	if( fgets( $handle, 1024 ) ){
+		$conflict = true;
+	} else {
+		$conflict = false;
+	}
+	pclose( $handle );
+
+	# Merge differences
+	$cmd = $wgDiff3 . ' -a -e --merge ' .
+	  wfEscapeShellArg( $mytextName, $oldtextName, $yourtextName );
+	$handle = popen( $cmd, 'r' );
+	$result = '';
+	do {
+		$data = fread( $handle, 8192 );
+		if ( strlen( $data ) == 0 ) {
+			break;
+		}
+		$result .= $data;
+	} while ( true );
+	pclose( $handle );
+	unlink( $mytextName ); unlink( $oldtextName ); unlink( $yourtextName );
+
+	if ( $result === '' && $old !== '' && $conflict == false ) {
+		wfDebug( "Unexpected null result from diff3. Command: $cmd\n" );
+		$conflict = true;
+	}
+	return ! $conflict;
+}
+
+/**
+ * @todo document
+ */
+function wfVarDump( $var ) {
+	global $wgOut;
+	$s = str_replace("\n","<br />\n", var_export( $var, true ) . "\n");
+	if ( headers_sent() || !@is_object( $wgOut ) ) {
+		print $s;
+	} else {
+		$wgOut->addHTML( $s );
+	}
+}
+
+/**
+ * Provide a simple HTTP error.
+ */
+function wfHttpError( $code, $label, $desc ) {
+	global $wgOut;
+	$wgOut->disable();
+	header( "HTTP/1.0 $code $label" );
+	header( "Status: $code $label" );
+	$wgOut->sendCacheControl();
+
+	header( 'Content-type: text/html' );
+	print "<html><head><title>" .
+		htmlspecialchars( $label ) .
+		"</title></head><body><h1>" .
+		htmlspecialchars( $label ) .
+		"</h1><p>" .
+		htmlspecialchars( $desc ) .
+		"</p></body></html>\n";
+}
+
+/**
+ * Converts an Accept-* header into an array mapping string values to quality
+ * factors
+ */
+function wfAcceptToPrefs( $accept, $def = '*/*' ) {
+	# No arg means accept anything (per HTTP spec)
+	if( !$accept ) {
+		return array( $def => 1 );
+	}
+
+	$prefs = array();
+
+	$parts = explode( ',', $accept );
+
+	foreach( $parts as $part ) {
+		# FIXME: doesn't deal with params like 'text/html; level=1'
+		@list( $value, $qpart ) = explode( ';', $part );
+		if( !isset( $qpart ) ) {
+			$prefs[$value] = 1;
+		} elseif( preg_match( '/q\s*=\s*(\d*\.\d+)/', $qpart, $match ) ) {
+			$prefs[$value] = $match[1];
+		}
+	}
+
+	return $prefs;
+}
+
+/**
+ * Checks if a given MIME type matches any of the keys in the given
+ * array. Basic wildcards are accepted in the array keys.
+ *
+ * Returns the matching MIME type (or wildcard) if a match, otherwise
+ * NULL if no match.
+ *
+ * @param string $type
+ * @param array $avail
+ * @return string
+ * @private
+ */
+function mimeTypeMatch( $type, $avail ) {
+	if( array_key_exists($type, $avail) ) {
+		return $type;
+	} else {
+		$parts = explode( '/', $type );
+		if( array_key_exists( $parts[0] . '/*', $avail ) ) {
+			return $parts[0] . '/*';
+		} elseif( array_key_exists( '*/*', $avail ) ) {
+			return '*/*';
+		} else {
+			return NULL;
+		}
+	}
+}
+
+/**
+ * Returns the 'best' match between a client's requested internet media types
+ * and the server's list of available types. Each list should be an associative
+ * array of type to preference (preference is a float between 0.0 and 1.0).
+ * Wildcards in the types are acceptable.
+ *
+ * @param array $cprefs Client's acceptable type list
+ * @param array $sprefs Server's offered types
+ * @return string
+ *
+ * @todo FIXME: doesn't handle params like 'text/plain; charset=UTF-8'
+ * XXX: generalize to negotiate other stuff
+ */
+function wfNegotiateType( $cprefs, $sprefs ) {
+	$combine = array();
+
+	foreach( array_keys($sprefs) as $type ) {
+		$parts = explode( '/', $type );
+		if( $parts[1] != '*' ) {
+			$ckey = mimeTypeMatch( $type, $cprefs );
+			if( $ckey ) {
+				$combine[$type] = $sprefs[$type] * $cprefs[$ckey];
+			}
+		}
+	}
+
+	foreach( array_keys( $cprefs ) as $type ) {
+		$parts = explode( '/', $type );
+		if( $parts[1] != '*' && !array_key_exists( $type, $sprefs ) ) {
+			$skey = mimeTypeMatch( $type, $sprefs );
+			if( $skey ) {
+				$combine[$type] = $sprefs[$skey] * $cprefs[$type];
+			}
+		}
+	}
+
+	$bestq = 0;
+	$besttype = NULL;
+
+	foreach( array_keys( $combine ) as $type ) {
+		if( $combine[$type] > $bestq ) {
+			$besttype = $type;
+			$bestq = $combine[$type];
+		}
+	}
+
+	return $besttype;
+}
+
+/**
+ * Array lookup
+ * Returns an array where the values in the first array are replaced by the
+ * values in the second array with the corresponding keys
+ *
+ * @return array
+ */
+function wfArrayLookup( $a, $b ) {
+	return array_flip( array_intersect( array_flip( $a ), array_keys( $b ) ) );
+}
+
+/**
+ * Convenience function; returns MediaWiki timestamp for the present time.
+ * @return string
+ */
+function wfTimestampNow() {
+	# return NOW
+	return wfTimestamp( TS_MW, time() );
+}
+
+/**
+ * Reference-counted warning suppression
+ */
+function wfSuppressWarnings( $end = false ) {
+	static $suppressCount = 0;
+	static $originalLevel = false;
+
+	if ( $end ) {
+		if ( $suppressCount ) {
+			--$suppressCount;
+			if ( !$suppressCount ) {
+				error_reporting( $originalLevel );
+			}
+		}
+	} else {
+		if ( !$suppressCount ) {
+			$originalLevel = error_reporting( E_ALL & ~( E_WARNING | E_NOTICE ) );
+		}
+		++$suppressCount;
+	}
+}
+
+/**
+ * Restore error level to previous value
+ */
+function wfRestoreWarnings() {
+	wfSuppressWarnings( true );
+}
+
+# Autodetect, convert and provide timestamps of various types
+
+/**
+ * Unix time - the number of seconds since 1970-01-01 00:00:00 UTC
+ */
+define('TS_UNIX', 0);
+
+/**
+ * MediaWiki concatenated string timestamp (YYYYMMDDHHMMSS)
+ */
+define('TS_MW', 1);
+
+/**
+ * MySQL DATETIME (YYYY-MM-DD HH:MM:SS)
+ */
+define('TS_DB', 2);
+
+/**
+ * RFC 2822 format, for E-mail and HTTP headers
+ */
+define('TS_RFC2822', 3);
+
+/**
+ * ISO 8601 format with no timezone: 1986-02-09T20:00:00Z
+ *
+ * This is used by Special:Export
+ */
+define('TS_ISO_8601', 4);
+
+/**
+ * An Exif timestamp (YYYY:MM:DD HH:MM:SS)
+ *
+ * @url http://exif.org/Exif2-2.PDF The Exif 2.2 spec, see page 28 for the
+ *       DateTime tag and page 36 for the DateTimeOriginal and
+ *       DateTimeDigitized tags.
+ */
+define('TS_EXIF', 5);
+
+/**
+ * Oracle format time.
+ */
+define('TS_ORACLE', 6);
+
+/**
+ * @param mixed $outputtype A timestamp in one of the supported formats, the
+ *                          function will autodetect which format is supplied
+ *                          and act accordingly.
+ * @return string Time in the format specified in $outputtype
+ */
+function wfTimestamp($outputtype=TS_UNIX,$ts=0) {
+	$uts = 0;
+	$da = array();
+	if ($ts==0) {
+		$uts=time();
+	} elseif (preg_match("/^(\d{4})\-(\d\d)\-(\d\d) (\d\d):(\d\d):(\d\d)$/D",$ts,$da)) {
+		# TS_DB
+		$uts=gmmktime((int)$da[4],(int)$da[5],(int)$da[6],
+			    (int)$da[2],(int)$da[3],(int)$da[1]);
+	} elseif (preg_match("/^(\d{4}):(\d\d):(\d\d) (\d\d):(\d\d):(\d\d)$/D",$ts,$da)) {
+		# TS_EXIF
+		$uts=gmmktime((int)$da[4],(int)$da[5],(int)$da[6],
+			(int)$da[2],(int)$da[3],(int)$da[1]);
+	} elseif (preg_match("/^(\d{4})(\d\d)(\d\d)(\d\d)(\d\d)(\d\d)$/D",$ts,$da)) {
+		# TS_MW
+		$uts=gmmktime((int)$da[4],(int)$da[5],(int)$da[6],
+			    (int)$da[2],(int)$da[3],(int)$da[1]);
+	} elseif (preg_match("/^(\d{1,13})$/D",$ts,$datearray)) {
+		# TS_UNIX
+		$uts = $ts;
+	} elseif (preg_match('/^(\d{1,2})-(...)-(\d\d(\d\d)?) (\d\d)\.(\d\d)\.(\d\d)/', $ts, $da)) {
+		# TS_ORACLE
+		$uts = strtotime(preg_replace('/(\d\d)\.(\d\d)\.(\d\d)(\.(\d+))?/', "$1:$2:$3",
+				str_replace("+00:00", "UTC", $ts)));
+	} elseif (preg_match('/^(\d{4})-(\d{2})-(\d{2})T(\d{2}):(\d{2}):(\d{2})Z$/', $ts, $da)) {
+		# TS_ISO_8601
+		$uts=gmmktime((int)$da[4],(int)$da[5],(int)$da[6],
+			(int)$da[2],(int)$da[3],(int)$da[1]);
+	} else {
+		# Bogus value; fall back to the epoch...
+		wfDebug("wfTimestamp() fed bogus time value: $outputtype; $ts\n");
+		$uts = 0;
+	}
+
+
+ 	switch($outputtype) {
+		case TS_UNIX:
+			return $uts;
+		case TS_MW:
+			return gmdate( 'YmdHis', $uts );
+		case TS_DB:
+			return gmdate( 'Y-m-d H:i:s', $uts );
+		case TS_ISO_8601:
+			return gmdate( 'Y-m-d\TH:i:s\Z', $uts );
+		// This shouldn't ever be used, but is included for completeness
+		case TS_EXIF:
+			return gmdate(  'Y:m:d H:i:s', $uts );
+		case TS_RFC2822:
+			return gmdate( 'D, d M Y H:i:s', $uts ) . ' GMT';
+		case TS_ORACLE:
+			return gmdate( 'd-M-y h.i.s A', $uts) . ' +00:00';
+		default:
+			throw new MWException( 'wfTimestamp() called with illegal output type.');
+	}
+}
+
+/**
+ * Return a formatted timestamp, or null if input is null.
+ * For dealing with nullable timestamp columns in the database.
+ * @param int $outputtype
+ * @param string $ts
+ * @return string
+ */
+function wfTimestampOrNull( $outputtype = TS_UNIX, $ts = null ) {
+	if( is_null( $ts ) ) {
+		return null;
+	} else {
+		return wfTimestamp( $outputtype, $ts );
+	}
+}
+
+/**
+ * Check if the operating system is Windows
+ *
+ * @return bool True if it's Windows, False otherwise.
+ */
+function wfIsWindows() {
+	if (substr(php_uname(), 0, 7) == 'Windows') {
+		return true;
+	} else {
+		return false;
+	}
+}
+
+/**
+ * Swap two variables
+ */
+function swap( &$x, &$y ) {
+	$z = $x;
+	$x = $y;
+	$y = $z;
+}
+
+function wfGetCachedNotice( $name ) {
+	global $wgOut, $parserMemc, $wgDBname;
+	$fname = 'wfGetCachedNotice';
+	wfProfileIn( $fname );
+	
+	$needParse = false;
+	$notice = wfMsgForContent( $name );
+	if( $notice == '&lt;'. $name . ';&gt' || $notice == '-' ) {
+		wfProfileOut( $fname );
+		return( false );
+	}
+	
+	$cachedNotice = $parserMemc->get( $wgDBname . ':' . $name );
+	if( is_array( $cachedNotice ) ) {
+		if( md5( $notice ) == $cachedNotice['hash'] ) {
+			$notice = $cachedNotice['html'];
+		} else {
+			$needParse = true;
+		}
+	} else {
+		$needParse = true;
+	}
+	
+	if( $needParse ) {
+		if( is_object( $wgOut ) ) {
+			$parsed = $wgOut->parse( $notice );
+			$parserMemc->set( $wgDBname . ':' . $name, array( 'html' => $parsed, 'hash' => md5( $notice ) ), 600 );
+			$notice = $parsed;
+		} else {
+			wfDebug( 'wfGetCachedNotice called for ' . $name . ' with no $wgOut available' );
+			$notice = '';
+		}
+	}
+	
+	wfProfileOut( $fname );
+	return $notice;
+}
+
+function wfGetNamespaceNotice() {
+	global $wgTitle;
+	
+	# Paranoia
+	if ( !isset( $wgTitle ) || !is_object( $wgTitle ) )
+		return "";
+
+	$fname = 'wfGetNamespaceNotice';
+	wfProfileIn( $fname );
+	
+	$key = "namespacenotice-" . $wgTitle->getNsText();
+	$namespaceNotice = wfGetCachedNotice( $key );
+	if ( $namespaceNotice && substr ( $namespaceNotice , 0 ,7 ) != "<p>&lt;" ) {
+		 $namespaceNotice = '<div id="namespacebanner">' . $namespaceNotice . "</div>";
+	} else {
+		$namespaceNotice = "";
+	}
+
+	wfProfileOut( $fname );
+	return $namespaceNotice;
+}
+
+function wfGetSiteNotice() {
+	global $wgUser, $wgSiteNotice;
+	$fname = 'wfGetSiteNotice';
+	wfProfileIn( $fname );
+	$siteNotice = '';	
+	
+	if( wfRunHooks( 'SiteNoticeBefore', array( &$siteNotice ) ) ) {
+		if( is_object( $wgUser ) && $wgUser->isLoggedIn() ) {
+			$siteNotice = wfGetCachedNotice( 'sitenotice' );
+			$siteNotice = !$siteNotice ? $wgSiteNotice : $siteNotice;
+		} else {
+			$anonNotice = wfGetCachedNotice( 'anonnotice' );
+			if( !$anonNotice ) {
+				$siteNotice = wfGetCachedNotice( 'sitenotice' );
+				$siteNotice = !$siteNotice ? $wgSiteNotice : $siteNotice;
+			} else {
+				$siteNotice = $anonNotice;
+			}
+		}
+	}
+
+	wfRunHooks( 'SiteNoticeAfter', array( &$siteNotice ) );
+	wfProfileOut( $fname );
+	return $siteNotice;
+}
+
+/** Global singleton instance of MimeMagic. This is initialized on demand,
+* please always use the wfGetMimeMagic() function to get the instance.
+*
+* @private
+*/
+$wgMimeMagic= NULL;
+
+/** Factory functions for the global MimeMagic object.
+* This function always returns the same singleton instance of MimeMagic.
+* That objects will be instantiated on the first call to this function.
+* If needed, the MimeMagic.php file is automatically included by this function.
+* @return MimeMagic the global MimeMagic objects.
+*/
+function &wfGetMimeMagic() {
+	global $wgMimeMagic;
+
+	if (!is_null($wgMimeMagic)) {
+		return $wgMimeMagic;
+	}
+
+	if (!class_exists("MimeMagic")) {
+		#include on demand
+		require_once("MimeMagic.php");
+	}
+
+	$wgMimeMagic= new MimeMagic();
+
+	return $wgMimeMagic;
+}
+
+
+/**
+ * Tries to get the system directory for temporary files.
+ * The TMPDIR, TMP, and TEMP environment variables are checked in sequence,
+ * and if none are set /tmp is returned as the generic Unix default.
+ *
+ * NOTE: When possible, use the tempfile() function to create temporary
+ * files to avoid race conditions on file creation, etc.
+ *
+ * @return string
+ */
+function wfTempDir() {
+	foreach( array( 'TMPDIR', 'TMP', 'TEMP' ) as $var ) {
+		$tmp = getenv( $var );
+		if( $tmp && file_exists( $tmp ) && is_dir( $tmp ) && is_writable( $tmp ) ) {
+			return $tmp;
+		}
+	}
+	# Hope this is Unix of some kind!
+	return '/tmp';
+}
+
+/**
+ * Make directory, and make all parent directories if they don't exist
+ */
+function wfMkdirParents( $fullDir, $mode = 0777 ) {
+	if ( strval( $fullDir ) === '' ) {
+		return true;
+	}
+	
+	# Go back through the paths to find the first directory that exists
+	$currentDir = $fullDir;
+	$createList = array();
+	while ( strval( $currentDir ) !== '' && !file_exists( $currentDir ) ) {	
+		# Strip trailing slashes
+		$currentDir = rtrim( $currentDir, '/\\' );
+
+		# Add to create list
+		$createList[] = $currentDir;
+
+		# Find next delimiter searching from the end
+		$p = max( strrpos( $currentDir, '/' ), strrpos( $currentDir, '\\' ) );
+		if ( $p === false ) {
+			$currentDir = false;
+		} else {
+			$currentDir = substr( $currentDir, 0, $p );
+		}
+	}
+	
+	if ( count( $createList ) == 0 ) {
+		# Directory specified already exists
+		return true;
+	} elseif ( $currentDir === false ) {
+		# Went all the way back to root and it apparently doesn't exist
+		return false;
+	}
+	
+	# Now go forward creating directories
+	$createList = array_reverse( $createList );
+	foreach ( $createList as $dir ) {
+		# use chmod to override the umask, as suggested by the PHP manual
+		if ( !mkdir( $dir, $mode ) || !chmod( $dir, $mode ) ) {
+			return false;
+		} 
+	}
+	return true;
+}
+
+/**
+ * Increment a statistics counter
+ */
+ function wfIncrStats( $key ) {
+	 global $wgDBname, $wgMemc;
+	 $key = "$wgDBname:stats:$key";
+	 if ( is_null( $wgMemc->incr( $key ) ) ) {
+		 $wgMemc->add( $key, 1 );
+	 }
+ }
+
+/**
+ * @param mixed $nr The number to format
+ * @param int $acc The number of digits after the decimal point, default 2
+ * @param bool $round Whether or not to round the value, default true
+ * @return float
+ */
+function wfPercent( $nr, $acc = 2, $round = true ) {
+	$ret = sprintf( "%.${acc}f", $nr );
+	return $round ? round( $ret, $acc ) . '%' : "$ret%";
+}
+
+/**
+ * Encrypt a username/password.
+ *
+ * @param string $userid ID of the user
+ * @param string $password Password of the user
+ * @return string Hashed password
+ */
+function wfEncryptPassword( $userid, $password ) {
+	global $wgPasswordSalt;
+	$p = md5( $password);
+
+	if($wgPasswordSalt)
+		return md5( "{$userid}-{$p}" );
+	else
+		return $p;
+}
+
+/**
+ * Appends to second array if $value differs from that in $default
+ */
+function wfAppendToArrayIfNotDefault( $key, $value, $default, &$changed ) {
+	if ( is_null( $changed ) ) {
+		throw new MWException('GlobalFunctions::wfAppendToArrayIfNotDefault got null');
+	}
+	if ( $default[$key] !== $value ) {
+		$changed[$key] = $value;
+	}
+}
+
+/**
+ * Since wfMsg() and co suck, they don't return false if the message key they
+ * looked up didn't exist but a XHTML string, this function checks for the
+ * nonexistance of messages by looking at wfMsg() output
+ *
+ * @param $msg      The message key looked up
+ * @param $wfMsgOut The output of wfMsg*()
+ * @return bool
+ */
+function wfEmptyMsg( $msg, $wfMsgOut ) {
+	return $wfMsgOut === "&lt;$msg&gt;";
+}
+
+/**
+ * Find out whether or not a mixed variable exists in a string
+ *
+ * @param mixed  needle
+ * @param string haystack
+ * @return bool
+ */
+function in_string( $needle, $str ) {
+	return strpos( $str, $needle ) !== false;
+}
+
+function wfSpecialList( $page, $details ) {
+	global $wgContLang;
+	$details = $details ? ' ' . $wgContLang->getDirMark() . "($details)" : "";
+	return $page . $details;
+}
+
+/**
+ * Returns a regular expression of url protocols
+ *
+ * @return string
+ */
+function wfUrlProtocols() {
+	global $wgUrlProtocols;
+
+	// Support old-style $wgUrlProtocols strings, for backwards compatibility
+	// with LocalSettings files from 1.5
+	if ( is_array( $wgUrlProtocols ) ) {
+		$protocols = array();
+		foreach ($wgUrlProtocols as $protocol)
+			$protocols[] = preg_quote( $protocol, '/' );
+
+		return implode( '|', $protocols );
+	} else {
+		return $wgUrlProtocols;
+	}
+}
+
+/**
+ * Execute a shell command, with time and memory limits mirrored from the PHP
+ * configuration if supported.
+ * @param $cmd Command line, properly escaped for shell.
+ * @param &$retval optional, will receive the program's exit code.
+ *                 (non-zero is usually failure)
+ * @return collected stdout as a string (trailing newlines stripped)
+ */
+function wfShellExec( $cmd, &$retval=null ) {
+	global $IP, $wgMaxShellMemory;
+	
+	if( ini_get( 'safe_mode' ) ) {
+		wfDebug( "wfShellExec can't run in safe_mode, PHP's exec functions are too broken.\n" );
+		$retval = 1;
+		return "Unable to run external programs in safe mode.";
+	}
+
+	if ( php_uname( 's' ) == 'Linux' ) {
+		$time = ini_get( 'max_execution_time' );
+		$mem = intval( $wgMaxShellMemory );
+
+		if ( $time > 0 && $mem > 0 ) {
+			$script = "$IP/bin/ulimit.sh";
+			if ( is_executable( $script ) ) {
+				$cmd = escapeshellarg( $script ) . " $time $mem $cmd";
+			}
+		}
+	} elseif ( php_uname( 's' ) == 'Windows NT' ) {
+		# This is a hack to work around PHP's flawed invocation of cmd.exe
+		# http://news.php.net/php.internals/21796
+		$cmd = '"' . $cmd . '"';
+	}
+	wfDebug( "wfShellExec: $cmd\n" );
+	
+	$output = array();
+	$retval = 1; // error by default?
+	$lastline = exec( $cmd, $output, $retval );
+	return implode( "\n", $output );
+	
+}
+
+/**
+ * This function works like "use VERSION" in Perl, the program will die with a
+ * backtrace if the current version of PHP is less than the version provided
+ *
+ * This is useful for extensions which due to their nature are not kept in sync
+ * with releases, and might depend on other versions of PHP than the main code
+ *
+ * Note: PHP might die due to parsing errors in some cases before it ever
+ *       manages to call this function, such is life
+ *
+ * @see perldoc -f use
+ *
+ * @param mixed $version The version to check, can be a string, an integer, or
+ *                       a float
+ */
+function wfUsePHP( $req_ver ) {
+	$php_ver = PHP_VERSION;
+
+	if ( version_compare( $php_ver, (string)$req_ver, '<' ) )
+		 throw new MWException( "PHP $req_ver required--this is only $php_ver" );
+}
+
+/**
+ * This function works like "use VERSION" in Perl except it checks the version
+ * of MediaWiki, the program will die with a backtrace if the current version
+ * of MediaWiki is less than the version provided.
+ *
+ * This is useful for extensions which due to their nature are not kept in sync
+ * with releases
+ *
+ * @see perldoc -f use
+ *
+ * @param mixed $version The version to check, can be a string, an integer, or
+ *                       a float
+ */
+function wfUseMW( $req_ver ) {
+	global $wgVersion;
+
+	if ( version_compare( $wgVersion, (string)$req_ver, '<' ) )
+		throw new MWException( "MediaWiki $req_ver required--this is only $wgVersion" );
+}
+
+/**
+ * Escape a string to make it suitable for inclusion in a preg_replace()
+ * replacement parameter.
+ *
+ * @param string $string
+ * @return string
+ */
+function wfRegexReplacement( $string ) {
+	$string = str_replace( '\\', '\\\\', $string );
+	$string = str_replace( '$', '\\$', $string );
+	return $string;
+}
+
+/**
+ * Return the final portion of a pathname.
+ * Reimplemented because PHP5's basename() is buggy with multibyte text.
+ * http://bugs.php.net/bug.php?id=33898
+ *
+ * PHP's basename() only considers '\' a pathchar on Windows and Netware.
+ * We'll consider it so always, as we don't want \s in our Unix paths either.
+ * 
+ * @param string $path
+ * @return string
+ */
+function wfBaseName( $path ) {
+	if( preg_match( '#([^/\\\\]*)[/\\\\]*$#', $path, $matches ) ) {
+		return $matches[1];
+	} else {
+		return '';
+	}
+}
+
+/**
+ * Make a URL index, appropriate for the el_index field of externallinks.
+ */
+function wfMakeUrlIndex( $url ) {
+	wfSuppressWarnings();
+	$bits = parse_url( $url );
+	wfRestoreWarnings();
+	if ( !$bits || $bits['scheme'] !== 'http' ) {
+		return false;
+	}
+	// Reverse the labels in the hostname, convert to lower case
+	$reversedHost = strtolower( implode( '.', array_reverse( explode( '.', $bits['host'] ) ) ) );
+	// Add an extra dot to the end
+	if ( substr( $reversedHost, -1, 1 ) !== '.' ) {
+		$reversedHost .= '.';
+	}
+	// Reconstruct the pseudo-URL
+	$index = "http://$reversedHost";
+	// Leave out user and password. Add the port, path, query and fragment
+	if ( isset( $bits['port'] ) )      $index .= ':' . $bits['port'];
+	if ( isset( $bits['path'] ) ) {
+		$index .= $bits['path'];
+	} else {
+		$index .= '/';
+	}
+	if ( isset( $bits['query'] ) )     $index .= '?' . $bits['query'];
+	if ( isset( $bits['fragment'] ) )  $index .= '#' . $bits['fragment'];
+	return $index;
+}
+
+/**
+ * Do any deferred updates and clear the list
+ * TODO: This could be in Wiki.php if that class made any sense at all
+ */
+function wfDoUpdates()
+{
+	global $wgPostCommitUpdateList, $wgDeferredUpdateList;
+	foreach ( $wgDeferredUpdateList as $update ) {
+		$update->doUpdate();
+	}
+	foreach ( $wgPostCommitUpdateList as $update ) {
+		$update->doUpdate();
+	}
+	$wgDeferredUpdateList = array();
+	$wgPostCommitUpdateList = array();
+}
+
+/**
+ * More or less "markup-safe" explode()
+ * Ignores any instances of the separator inside <...>
+ * @param string $separator
+ * @param string $text
+ * @return array
+ */
+function wfExplodeMarkup( $separator, $text ) {
+	$placeholder = "\x00";
+	
+	// Just in case...
+	$text = str_replace( $placeholder, '', $text );
+	
+	// Trim stuff
+	$replacer = new ReplacerCallback( $separator, $placeholder );
+	$cleaned = preg_replace_callback( '/(<.*?>)/', array( $replacer, 'go' ), $text );
+	
+	$items = explode( $separator, $cleaned );
+	foreach( $items as $i => $str ) {
+		$items[$i] = str_replace( $placeholder, $separator, $str );
+	}
+	
+	return $items;
+}
+
+class ReplacerCallback {
+	function ReplacerCallback( $from, $to ) {
+		$this->from = $from;
+		$this->to = $to;
+	}
+	
+	function go( $matches ) {
+		return str_replace( $this->from, $this->to, $matches[1] );
+	}
+}
+
+
+/**
+ * Convert an arbitrarily-long digit string from one numeric base
+ * to another, optionally zero-padding to a minimum column width.
+ *
+ * Supports base 2 through 36; digit values 10-36 are represented
+ * as lowercase letters a-z. Input is case-insensitive.
+ *
+ * @param $input string of digits
+ * @param $sourceBase int 2-36
+ * @param $destBase int 2-36
+ * @param $pad int 1 or greater
+ * @return string or false on invalid input
+ */
+function wfBaseConvert( $input, $sourceBase, $destBase, $pad=1 ) {
+	if( $sourceBase < 2 ||
+		$sourceBase > 36 ||
+		$destBase < 2 ||
+		$destBase > 36 ||
+		$pad < 1 ||
+		$sourceBase != intval( $sourceBase ) ||
+		$destBase != intval( $destBase ) ||
+		$pad != intval( $pad ) ||
+		!is_string( $input ) ||
+		$input == '' ) {
+		return false;
+	}
+	
+	$digitChars = '0123456789abcdefghijklmnopqrstuvwxyz';
+	$inDigits = array();
+	$outChars = '';
+	
+	// Decode and validate input string
+	$input = strtolower( $input );
+	for( $i = 0; $i < strlen( $input ); $i++ ) {
+		$n = strpos( $digitChars, $input{$i} );
+		if( $n === false || $n > $sourceBase ) {
+			return false;
+		}
+		$inDigits[] = $n;
+	}
+	
+	// Iterate over the input, modulo-ing out an output digit
+	// at a time until input is gone.
+	while( count( $inDigits ) ) {
+		$work = 0;
+		$workDigits = array();
+		
+		// Long division...
+		foreach( $inDigits as $digit ) {
+			$work *= $sourceBase;
+			$work += $digit;
+			
+			if( $work < $destBase ) {
+				// Gonna need to pull another digit.
+				if( count( $workDigits ) ) {
+					// Avoid zero-padding; this lets us find
+					// the end of the input very easily when
+					// length drops to zero.
+					$workDigits[] = 0;
+				}
+			} else {
+				// Finally! Actual division!
+				$workDigits[] = intval( $work / $destBase );
+				
+				// Isn't it annoying that most programming languages
+				// don't have a single divide-and-remainder operator,
+				// even though the CPU implements it that way?
+				$work = $work % $destBase;
+			}
+		}
+		
+		// All that division leaves us with a remainder,
+		// which is conveniently our next output digit.
+		$outChars .= $digitChars[$work];
+		
+		// And we continue!
+		$inDigits = $workDigits;
+	}
+	
+	while( strlen( $outChars ) < $pad ) {
+		$outChars .= '0';
+	}
+	
+	return strrev( $outChars );
+}
+
+/**
+ * Create an object with a given name and an array of construct parameters
+ * @param string $name
+ * @param array $p parameters
+ */
+function wfCreateObject( $name, $p ){
+	$p = array_values( $p );
+	switch ( count( $p ) ) {
+		case 0:
+			return new $name;
+		case 1:
+			return new $name( $p[0] );
+		case 2:
+			return new $name( $p[0], $p[1] );
+		case 3:
+			return new $name( $p[0], $p[1], $p[2] );
+		case 4:
+			return new $name( $p[0], $p[1], $p[2], $p[3] );
+		case 5:
+			return new $name( $p[0], $p[1], $p[2], $p[3], $p[4] );
+		case 6:
+			return new $name( $p[0], $p[1], $p[2], $p[3], $p[4], $p[5] );
+		default:
+			throw new MWException( "Too many arguments to construtor in wfCreateObject" );
+	}
+}
+
+/**
+ * Aliases for modularized functions
+ */
+function wfGetHTTP( $url, $timeout = 'default' ) { 
+	return Http::get( $url, $timeout ); 
+}
+function wfIsLocalURL( $url ) { 
+	return Http::isLocalURL( $url ); 
+}
+
+?>