| /* |
| * Licensed to the Apache Software Foundation (ASF) under one or more |
| * contributor license agreements. See the NOTICE file distributed with |
| * this work for additional information regarding copyright ownership. |
| * The ASF licenses this file to You under the Apache License, Version 2.0 |
| * (the "License"); you may not use this file except in compliance with |
| * the License. You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an "AS IS" BASIS, |
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| * See the License for the specific language governing permissions and |
| * limitations under the License. |
| */ |
| package javax.servlet.jsp.jstl.tlv; |
| |
| import java.io.IOException; |
| import java.io.InputStream; |
| import java.security.AccessController; |
| import java.security.PrivilegedAction; |
| |
| import javax.servlet.jsp.tagext.PageData; |
| import javax.xml.XMLConstants; |
| import javax.xml.parsers.ParserConfigurationException; |
| import javax.xml.parsers.SAXParser; |
| import javax.xml.parsers.SAXParserFactory; |
| |
| import org.xml.sax.SAXException; |
| import org.xml.sax.SAXNotRecognizedException; |
| import org.xml.sax.SAXNotSupportedException; |
| import org.xml.sax.helpers.DefaultHandler; |
| |
| /** |
| * Support class for working with the SAX Parser. |
| */ |
| class PageParser { |
| |
| private final SAXParserFactory parserFactory; |
| |
| PageParser(boolean namespaceAware) { |
| parserFactory = AccessController.doPrivileged(new PrivilegedAction<SAXParserFactory>() { |
| public SAXParserFactory run() { |
| ClassLoader original = Thread.currentThread().getContextClassLoader(); |
| ClassLoader ours = PageParser.class.getClassLoader(); |
| try { |
| if (original != ours) { |
| Thread.currentThread().setContextClassLoader(ours); |
| } |
| return SAXParserFactory.newInstance(); |
| } finally { |
| if (original != ours) { |
| Thread.currentThread().setContextClassLoader(original); |
| } |
| } |
| } |
| }); |
| try { |
| parserFactory.setNamespaceAware(namespaceAware); |
| parserFactory.setValidating(false); |
| parserFactory.setFeature(XMLConstants.FEATURE_SECURE_PROCESSING, true); |
| } catch (ParserConfigurationException e) { |
| throw new ExceptionInInitializerError(e); |
| } catch (SAXNotRecognizedException e) { |
| throw new ExceptionInInitializerError(e); |
| } catch (SAXNotSupportedException e) { |
| throw new ExceptionInInitializerError(e); |
| } |
| } |
| |
| void parse(PageData pageData, DefaultHandler handler) throws ParserConfigurationException, SAXException, IOException { |
| SAXParser parser = parserFactory.newSAXParser(); |
| InputStream is = pageData.getInputStream(); |
| try { |
| parser.parse(is, handler); |
| } finally { |
| try { |
| is.close(); |
| } catch (IOException e) { |
| // Suppress. |
| } |
| } |
| } |
| } |