| /* |
| * Copyright (c) 1997, 2011, Oracle and/or its affiliates. All rights reserved. |
| * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
| * |
| * This code is free software; you can redistribute it and/or modify it |
| * under the terms of the GNU General Public License version 2 only, as |
| * published by the Free Software Foundation. Oracle designates this |
| * particular file as subject to the "Classpath" exception as provided |
| * by Oracle in the LICENSE file that accompanied this code. |
| * |
| * This code is distributed in the hope that it will be useful, but WITHOUT |
| * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
| * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
| * version 2 for more details (a copy is included in the LICENSE file that |
| * accompanied this code). |
| * |
| * You should have received a copy of the GNU General Public License version |
| * 2 along with this work; if not, write to the Free Software Foundation, |
| * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
| * |
| * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
| * or visit www.oracle.com if you need additional information or have any |
| * questions. |
| */ |
| |
| package com.sun.tools.internal.xjc.reader; |
| |
| import java.util.StringTokenizer; |
| |
| import com.sun.tools.internal.xjc.Options; |
| |
| import org.xml.sax.Attributes; |
| import org.xml.sax.ErrorHandler; |
| import org.xml.sax.SAXException; |
| |
| /** |
| * This filter checks jaxb:extensionBindingPrefix and |
| * pass/filter extension bindings. |
| * |
| * <p> |
| * This filter also remembers enabled extension namespaces |
| * and filters out any extension namespaces that doesn't belong |
| * to those. The net effect is that disabled customizations |
| * will never pass through this filter. |
| * |
| * <p> |
| * Note that we can't just filter out all foreign namespaces, |
| * as we need to use user-defined tags in documentations to generate javadoc. |
| * |
| * <p> |
| * The class needs to know the list of extension binding namespaces |
| * that the RI recognizes. |
| * To add new URI, modify the isSupportedExtension method. |
| * |
| * @author |
| * Kohsuke Kawaguchi (kohsuke.kawaguchi@sun.com) |
| */ |
| public final class ExtensionBindingChecker extends AbstractExtensionBindingChecker { |
| |
| /** |
| * Number of the elements encountered. Used to detect the root element. |
| */ |
| private int count=0; |
| |
| public ExtensionBindingChecker(String schemaLanguage, Options options, ErrorHandler handler) { |
| super(schemaLanguage, options, handler); |
| } |
| |
| /** |
| * Returns true if the elements with the given namespace URI |
| * should be blocked by this filter. |
| */ |
| private boolean needsToBePruned( String uri ) { |
| if( uri.equals(schemaLanguage) ) |
| return false; |
| if( uri.equals(Const.JAXB_NSURI) ) |
| return false; |
| if( enabledExtensions.contains(uri) ) |
| return false; |
| |
| // we don't need to prune something unless |
| // the rest of the processor recognizes it as something special. |
| // this allows us to send the documentation and other harmless |
| // foreign XML fragments, which may be picked up as documents. |
| return isRecognizableExtension(uri); |
| } |
| |
| |
| @Override |
| public void startDocument() throws SAXException { |
| super.startDocument(); |
| count=0; |
| } |
| |
| @Override |
| public void startElement(String namespaceURI, String localName, String qName, Attributes atts) |
| throws SAXException { |
| |
| if(!isCutting()) { |
| String v = atts.getValue(Const.JAXB_NSURI,"extensionBindingPrefixes"); |
| if(v!=null) { |
| if(count!=0) |
| // the binding attribute is allowed only at the root level. |
| error( Messages.ERR_UNEXPECTED_EXTENSION_BINDING_PREFIXES.format() ); |
| |
| if(!allowExtensions) |
| error( Messages.ERR_VENDOR_EXTENSION_DISALLOWED_IN_STRICT_MODE.format() ); |
| |
| // then remember the associated namespace URIs. |
| StringTokenizer tokens = new StringTokenizer(v); |
| while(tokens.hasMoreTokens()) { |
| String prefix = tokens.nextToken(); |
| String uri = nsSupport.getURI(prefix); |
| if( uri==null ) |
| // undeclared prefix |
| error( Messages.ERR_UNDECLARED_PREFIX.format(prefix) ); |
| else |
| checkAndEnable(uri); |
| } |
| } |
| |
| if( needsToBePruned(namespaceURI) ) { |
| // start pruning the tree. Call the super class method directly. |
| if( isRecognizableExtension(namespaceURI) ) { |
| // but this is a supported customization. |
| // isn't the user forgetting @jaxb:extensionBindingPrefixes? |
| warning( Messages.ERR_SUPPORTED_EXTENSION_IGNORED.format(namespaceURI) ); |
| } |
| startCutting(); |
| } else |
| verifyTagName(namespaceURI, localName, qName); |
| } |
| |
| count++; |
| super.startElement(namespaceURI, localName, qName, atts); |
| } |
| } |