93 lines
3.1 KiB
Java
93 lines
3.1 KiB
Java
/*
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* Copyright (c) 2004, 2013, Oracle and/or its affiliates. All rights reserved.
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* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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*
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* This code is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License version 2 only, as
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* published by the Free Software Foundation. Oracle designates this
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* particular file as subject to the "Classpath" exception as provided
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* by Oracle in the LICENSE file that accompanied this code.
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*
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* This code is distributed in the hope that it will be useful, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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* version 2 for more details (a copy is included in the LICENSE file that
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* accompanied this code).
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*
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* You should have received a copy of the GNU General Public License version
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* 2 along with this work; if not, write to the Free Software Foundation,
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* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
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*
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* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
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* or visit www.oracle.com if you need additional information or have any
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* questions.
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*/
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package javax.xml.bind.annotation.adapters;
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/**
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* {@link XmlAdapter} to handle <tt>xs:normalizedString</tt>.
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*
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* <p>
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* Replaces any tab, CR, and LF by a whitespace character ' ',
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* as specified in <a href="http://www.w3.org/TR/xmlschema-2/#rf-whiteSpace">the whitespace facet 'replace'</a>
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*
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* @author Kohsuke Kawaguchi, Martin Grebac
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* @since JAXB 2.0
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*/
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public final class NormalizedStringAdapter extends XmlAdapter<String,String> {
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/**
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* Replace any tab, CR, and LF by a whitespace character ' ',
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* as specified in <a href="http://www.w3.org/TR/xmlschema-2/#rf-whiteSpace">the whitespace facet 'replace'</a>
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*/
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public String unmarshal(String text) {
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if(text==null) return null; // be defensive
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int i=text.length()-1;
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// look for the first whitespace char.
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while( i>=0 && !isWhiteSpaceExceptSpace(text.charAt(i)) )
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i--;
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if( i<0 )
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// no such whitespace. replace(text)==text.
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return text;
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// we now know that we need to modify the text.
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// allocate a char array to do it.
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char[] buf = text.toCharArray();
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buf[i--] = ' ';
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for( ; i>=0; i-- )
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if( isWhiteSpaceExceptSpace(buf[i]))
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buf[i] = ' ';
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return new String(buf);
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}
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/**
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* No-op.
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*
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* Just return the same string given as the parameter.
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*/
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public String marshal(String s) {
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return s;
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}
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/**
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* Returns true if the specified char is a white space character
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* but not 0x20.
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*/
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protected static boolean isWhiteSpaceExceptSpace(char ch) {
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// most of the characters are non-control characters.
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// so check that first to quickly return false for most of the cases.
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if( ch>=0x20 ) return false;
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// other than we have to do four comparisons.
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return ch == 0x9 || ch == 0xA || ch == 0xD;
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}
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}
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