private static String getBlock ( String str , char open , char close , IntWritable index ) throws ParseException { StringBuilder split = new StringBuilder ( ) ; int next = StringUtils . findNext ( str , open , StringUtils . ESCAPE_CHAR , index . get ( ) , split ) ; split . setLength ( 0 ) ; // clear the buffer if ( next >= 0 ) { ++ next ; // move over '(' next = StringUtils . findNext ( str , close , StringUtils . ESCAPE_CHAR , next , split ) ; if ( next >= 0 ) { ++ next ; // move over ')' index . set ( next ) ; return split . toString ( ) ; // found a block } else { throw new ParseException ( "Unexpected end of block" , next ) ; } } return null ; // found nothing }
returns null .