mode to maintain valid XHTML, see
// http://sourceforge.net/tracker/index.php?func=detail&aid=1201963&group_id=114997&atid=670231
$enclose = GESHI_HEADER_DIV;
$geshi->enable_line_numbers( GESHI_FANCY_LINE_NUMBERS );
}
// Starting line number
if( isset( $args['start'] ) )
$geshi->start_line_numbers_at( $args['start'] );
$geshi->set_header_type( $enclose );
// Strict mode
if( isset( $args['strict'] ) )
$geshi->enable_strict_mode();
// Format
$out = $geshi->parse_code();
$err = $geshi->error();
if( $err ) {
// Error!
return self::formatError( $err );
} else {
// Armour for Parser::doBlockLevels()
if( $enclose == GESHI_HEADER_DIV )
$out = str_replace( "\n", '', $out );
// Register CSS
$parser->mOutput->addHeadItem( self::buildHeadItem( $geshi ), "source-{$lang}" );
return '' . $out . '
';
}
}
/**
* Hook into Article::view() to provide syntax highlighting for
* custom CSS and JavaScript pages
*
* @param string $text
* @param Title $title
* @param OutputPage $output
* @return bool
*/
public static function viewHook( $text, $title, $output ) {
// Determine the language
preg_match( '!\.(css|js)$!u', $title->getText(), $matches );
$lang = $matches[1] == 'css' ? 'css' : 'javascript';
// Attempt to format
$geshi = self::prepare( $text, $lang );
if( $geshi instanceof GeSHi ) {
$out = $geshi->parse_code();
if( !$geshi->error() ) {
// Done
$output->addHeadItem( "source-$lang", self::buildHeadItem( $geshi ) );
$output->addHtml( "{$out}
" );
return false;
}
}
// Bottle out
return true;
}
/**
* Initialise a GeSHi object to format some code, performing
* common setup for all our uses of it
*
* @param string $text
* @param string $lang
* @return GeSHi
*/
private static function prepare( $text, $lang ) {
self::initialise();
$geshi = new GeSHi( $text, $lang );
if( $geshi->error() == GESHI_ERROR_NO_SUCH_LANG )
return null;
$geshi->set_encoding( 'UTF-8' );
$geshi->enable_classes();
$geshi->set_overall_class( "source-$lang" );
$geshi->enable_keyword_links( false );
return $geshi;
}
/**
* Prepare a CSS snippet suitable for use as a ParserOutput/OutputPage
* head item
*
* @param GeSHi $geshi
* @return string
*/
private static function buildHeadItem( $geshi ) {
global $wgUseSiteCss, $wgSquidMaxage;
$lang = $geshi->language;
$css[] = '';
if( $wgUseSiteCss ) {
$title = Title::makeTitle( NS_MEDIAWIKI, 'Geshi.css' );
$q = "usemsgcache=yes&action=raw&ctype=text/css&smaxage={$wgSquidMaxage}";
$css[] = '';
}
return implode( "\n", $css );
}
/**
* Format an error message
*
* @param string $error
* @return string
*/
private static function formatError( $error = '' ) {
$html = '';
if( $error )
$html .= "{$error}
";
$html .= '' . htmlspecialchars( wfMsgForContent( 'syntaxhighlight-specify' ) )
. ' <source lang="html">...</source>
'
. '' . htmlspecialchars( wfMsgForContent( 'syntaxhighlight-supported' ) ) . '
'
. self::formatLanguages();
return "{$html}
";
}
/**
* Format the list of supported languages
*
* @return string
*/
private static function formatLanguages() {
$langs = self::getSupportedLanguages();
$list = array();
if( count( $langs ) > 0 ) {
foreach( $langs as $lang ) {
$list[] = '' . htmlspecialchars( $lang ) . '';
}
return '' . implode( ', ', $list ) . '
';
} else {
return '' . htmlspecialchars( wfMsgForContent( 'syntaxhighlight-err-loading' ) ) . '
';
}
}
/**
* Get the list of supported languages
*
* @return array
*/
private static function getSupportedLanguages() {
if( !is_array( self::$languages ) ) {
self::initialise();
self::$languages = array();
foreach( glob( GESHI_LANG_ROOT . "/*.php" ) as $file ) {
self::$languages[] = basename( $file, '.php' );
}
sort( self::$languages );
}
return self::$languages;
}
/**
* Initialise messages and ensure the GeSHi class is loaded
*/
private static function initialise() {
if( !self::$initialised ) {
wfLoadExtensionMessages( 'SyntaxHighlight_GeSHi' );
if( !class_exists( 'GeSHi' ) )
require( 'geshi/geshi.php' );
self::$initialised = true;
}
return true;
}
}