Bug 46805 prepare Compare for encoding support
I20031111 The Compare plugin only supports the global workspace encoding. It does not support encodings per file.
org.eclipse.jdt.ui/ui/org/eclipse/jdt/internal/ui/compare/PropertiesStructureCreator.java
return null;
	}
	
	public boolean canRewriteTree() {
		return false;
	}
	
	/*
	public void rewriteTree(Differencer differencer, IDiffContainer root) {
		// empty implementation
	}
	*/
	
	public String getContents(Object node, boolean ignoreWhitespace) {
		if (node instanceof IStreamContentAccessor) {
			IStreamContentAccessor sca= (IStreamContentAccessor) node;
			try {
				return JavaCompareUtilities.readString(sca.getContents());
			} catch (CoreException ex) {
				JavaPlugin.log(ex);
			}
		}
		return null;
	}
	
	private String readLine(int[] args, IDocument doc) {
		int line= args[0]++;
		try {
			IRegion region= doc.getLineInformation(line);
			int start= region.getOffset();