remove characters from s that are not safe to use in a filename . concode_field_sep String openExchangeDir concode_elem_sep Object nativeLock concode_field_sep boolean isOpenExchangeEngine concode_elem_sep String openExchangeFileName concode_elem_sep boolean chmod concode_elem_sep String internalStockFishName concode_elem_sep void reNice concode_elem_sep boolean isNetEngine
String function ( String arg0 ) { StringBuilder loc0 = new StringBuilder ( ) ; for ( int loc1 = 0 ; loc1 < arg0 . length ( ) ; loc1 ++ ) { char loc2 = arg0 . charAt ( loc1 ) ; if ( ( ( loc2 >= 'A' ) && ( loc2 <= 'Z' ) ) || ( ( loc2 >= 'a' ) && ( loc2 <= 'z' ) ) || ( ( loc2 >= '0' ) && ( loc2 <= '9' ) ) ) loc0 . append ( loc2 ) ; else loc0 . append ( '_' ) ; } return loc0 . toString ( ) ; }