method = $fun; } else { throw new Exception( "no such titlemunger exists: {$type}" ); } } public function munge( $path ) { return call_user_func( $this->method, $path ); } public function getMethod() { return get_class( $this ) . "::" . $this->method[1]; } static function mungeDefault( $path ) { $path = self::truncate_unique( $path ); $path = self::getHashedDirectory( $path, 3 ) . "/" . $path; return $path; } static function mungeMd5( $path ) { $path = urldecode($path); $match = array(); preg_match( "!(?:[^./]+)(?[.][^./]+)$!", $path, $match ); $path = md5($path) . $match['ext']; $path = self::getHashedDirectory( $path, 3 ) . "/" . substr( $path, 3 ); return $path; } static function mungeWindows( $name ) { global $wgLang; # Replace illegal characters for Windows paths with underscores $friendlyName = strtr( $name, '/\\*?"<>|~', '_________' ); # Work out lower case form. We assume we're on a system with case-insensitive # filenames, so unless the case is of a special form, we have to disambiguate # TODO: $lowerCase is unused if ( function_exists( 'mb_strtolower' ) ) { $lowerCase = $wgLang->ucfirst( mb_strtolower( $name ) ); } else { $lowerCase = ucfirst( strtolower( $name ) ); } # Handle colon specially by replacing it with tilde # Thus we reduce the number of paths with hashes appended $friendlyName = str_replace( ':', '~', $friendlyName ); $friendlyName = self::truncate_unique( $friendlyName ); $friendlyName = self::getHashedDirectory( $friendlyName, 3 ) . "/" . $friendlyName; return $friendlyName; } static function truncate_unique( $filename ) { $max_length = 255 - 5; // .html if ( strlen( $filename ) > $max_length ) { # Make it mostly unique $filename = substr( $filename, 0, $max_length ) . '_' . substr( md5( $filename ), 0, 4); } return $filename; } static function getHashedDirectory( &$filename, $depth ) { # Find the first colon if there is one, use characters after it $p = strpos( $filename, ':' ); if ( $p !== false ) { $dbk = substr( $filename, $p + 1 ); $dbk = substr( $dbk, strspn( $dbk, '_' ) ); } else { $dbk = $filename; } # Split into characters $m = array(); preg_match_all( '/./us', $dbk, $m ); $chars = $m[0]; $length = count( $chars ); $dir = ''; for ( $i = 0; $i < $depth; $i++ ) { if ( $i ) { $dir .= '/'; } if ( $i >= $length ) { $dir .= '_'; } else { $c = $chars[$i]; if ( ord( $c ) >= 128 || preg_match( '/[a-zA-Z0-9!#$%&()+,[\]^_`{}-]/', $c ) ) { if ( function_exists( 'mb_strtolower' ) ) { $dir .= mb_strtolower( $c ); } else { $dir .= strtolower( $c ); } } else { $dir .= sprintf( "%02X", ord( $c ) ); } } } return $dir; } }