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93 lines
2.1 KiB
93 lines
2.1 KiB
/*
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* Copyright (c) 2004, 2013, Oracle and/or its affiliates. All rights reserved.
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* ORACLE PROPRIETARY/CONFIDENTIAL. Use is subject to license terms.
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*
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*
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*
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*
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*
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*
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*
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*
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*
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*
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*
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*
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*
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*
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*
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*
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*
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*
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*
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*
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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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