protected String normalizeURI ( String uriref ) { String newRef = "" ; byte [ ] bytes ; if ( uriref == null ) { return null ; } try { bytes = uriref . getBytes ( "UTF-8" ) ; } catch ( UnsupportedEncodingException uee ) { // this can't happen catalogManager . debug . message ( 1 , "UTF-8 is an unsupported encoding!?" ) ; return uriref ; } for ( int count = 0 ; count < bytes . length ; count ++ ) { int ch = bytes [ count ] & 0xFF ; if ( ( ch <= 0x20 ) // ctrl || ( ch > 0x7F ) // high ascii || ( ch == 0x22 ) // " || ( ch == 0x3C ) // < || ( ch == 0x3E ) // > || ( ch == 0x5C ) // \ || ( ch == 0x5E ) // ^ || ( ch == 0x60 ) // ` || ( ch == 0x7B ) // { || ( ch == 0x7C ) // | || ( ch == 0x7D ) // } || ( ch == 0x7F ) ) { newRef += encodedByte ( ch ) ; } else { newRef += ( char ) bytes [ count ] ; } } return newRef ; }
Perform character normalization on a URI reference .