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/*
 * Copyright (c) 2004, 2018 Oracle and/or its affiliates. All rights reserved.
 *
 * This program and the accompanying materials are made available under the
 * terms of the Eclipse Distribution License v. 1.0, which is available at
 * http://www.eclipse.org/org/documents/edl-v10.php.
 *
 * SPDX-License-Identifier: BSD-3-Clause
 */

package javax.xml.bind.annotation.adapters;



/**
 * {@link XmlAdapter} to handle {@code xs:normalizedString}.
 *
 * 

* Replaces any tab, CR, and LF by a whitespace character ' ', * as specified in the whitespace facet 'replace' * * @author Kohsuke Kawaguchi, Martin Grebac * @since 1.6, JAXB 2.0 */ public final class NormalizedStringAdapter extends XmlAdapter { /** * Replace any tab, CR, and LF by a whitespace character ' ', * as specified in the whitespace facet 'replace' */ public String unmarshal(String text) { if(text==null) return null; // be defensive int i=text.length()-1; // look for the first whitespace char. while( i>=0 && !isWhiteSpaceExceptSpace(text.charAt(i)) ) i--; if( i<0 ) // no such whitespace. replace(text)==text. return text; // we now know that we need to modify the text. // allocate a char array to do it. char[] buf = text.toCharArray(); buf[i--] = ' '; for( ; i>=0; i-- ) if( isWhiteSpaceExceptSpace(buf[i])) buf[i] = ' '; return new String(buf); } /** * No-op. * * Just return the same string given as the parameter. */ public String marshal(String s) { return s; } /** * Returns true if the specified char is a white space character * but not 0x20. */ protected static boolean isWhiteSpaceExceptSpace(char ch) { // most of the characters are non-control characters. // so check that first to quickly return false for most of the cases. if( ch>=0x20 ) return false; // other than we have to do four comparisons. return ch == 0x9 || ch == 0xA || ch == 0xD; } }





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