[jira] Created: (XMLBEANS-274) Over zelous whitespace cropping after parsing entity like &

[Peter Rodgers (JIRA)]

Over zelous whitespace cropping after parsing entity like &
---------------------------------------------------------------

         Key: XMLBEANS-274
         URL: http://issues.apache.org/jira/browse/XMLBEANS-274
     Project: XMLBeans
        Type: Bug

    Versions: Version 2.1    
 Environment: All
    Reporter: Peter Rodgers


When white space stripping is specified the parser does not detect XML entities 
such as & and strips the whitespace following each entity.

For example

<root>dog &amp; cat</root>

is parsed as

<root>doc &amp;cat</root>

The cause of the problem is the stripLeft() method in the 
org.apache.xmlbeans.impl.store.CharUtil

Below is a fixed version of the method that detects the ';' character after an 
entity which indicates that whitespace is significant and must be preserved.  
Note this code does not fix the case where the iteration is a for loop.

public Object stripLeft ( Object src, int off, int cch )
    {
        assert isValid( src, off, cch );

        if (cch > 0)
        {
            if (src instanceof char[])
            {
                char[] chars = (char[]) src;

                while ( cch > 0 && isWhiteSpace( chars[ off ] ) && chars[off - 
1]!=';' )  //Fix for &amp; etc
                    { cch--; off++; }
            }
            else if (src instanceof String)
            {
                String s = (String) src;

                while ( cch > 0 && isWhiteSpace( s.charAt( off ) ) && 
s.charAt(off - 1)!=';' ) //Fix for &amp; etc
                    { cch--; off++; }
            }
            else
            {
                int count = 0;
                
                for ( _charIter.init( src, off, cch ) ; _charIter.hasNext() ; 
count++ )
                    if (!isWhiteSpace( _charIter.next() ))
                        break;
                
                _charIter.release();

                off += count;
            }
        }

        if (cch == 0)
        {
            _offSrc = 0;
            _cchSrc = 0;
            
            return null;
        }

        _offSrc = off;
        _cchSrc = cch;

        return src;
    }

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